Lighting for the Workplace

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CONTENTS 3

Foreword by Paul Morrell, 4–5 President of the British Council for Offices

INTRODUCTION 6–7

The Changing Corporate Perspective 6–7

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 8–51

Lighting Research versus the Codes 10–11 – The Lessons of Lighting Research 12–15 – Current Guidance and its Limitations 16–23

Key Issues in Workplace Lighting 24–29

Natural Light, Active Light & Balanced Light 30–37

Further Considerations in Workplace Lighting 38–47

Lighting Techniques – Comparing the Options 48–51

WORKPLACE LIGHTING – APPLICATION AREAS 52–97

Open Plan Offices 56–67

Cellular Offices 68–71

Dealer Rooms 72–75

Control Rooms 76–79

Call Centres 80–83

Communication Areas/Meeting Rooms 84–87

Break-Out Zones 88–91

Storage 92–93

Common Parts 94–97

WORKPLACE LIGHTING – LIGHTING DESIGN 98–135

Product Selector 100–133

Advisory Services 134–135

References & Useful Websites 135

IMPRINT

Publisher: Zumtobel Staff GmbH, Dornbirn/A

Design: Marketing Communication

London aims to continue being Europe’s leading financial centre and will need more, higher quality office space in the future (photo: Piper’s model of the future City of London, shown at MIPIM 2005) FOREWORD 5

The UK office market, in particular in London, is changing, driven by a number of long-term trends in

international banking and finance. Informed forecasts, such as the recent Radley Report*, point, firstly,

to a shift towards our capital city, at the expense of Paris and Frankfurt, as Europe’s leading financial

centre, with a commensurate pressure on office space. Secondly, we can see a medium-to-long term

growth in the number of highly educated, mathematically literate graduates required to run these

complex, sophisticated financial operations. This shift from low skill to high skill staff puts a premium

Paul Morrell BSc FRICS Hon FRIBA President on worker satisfaction, as they become ever more demanding of their company and working of British Council for Offices conditions. The lesson is clear – nothing is more important in a service economy like ours than the

efficiency of the working environment.

In today’s fast-moving marketplace, successful companies must invest in improved design and

specification, to attract and retain an increasingly valuable and demanding workforce. People, not

technology, must become the driving force of future office design. If one looks at the ratio of long-term

costs of any business, including building design, construction, maintenance and personnel, design is a

tiny fraction of the total – about 0.05 % of the cost of your workers. Yet that very small investment in

good design has been proven to have a huge impact on staff satisfaction, efficiency and profitability.

To put it another way, if a building can increase the productivity of its occupants by 10 per cent, you

essentially get it free.

For all these reasons, improved design and specification – and especially lighting, the subject of this

timely brochure from Zumtobel Staff Lighting – can make a significant contribution to long-term

success.

* The Outlook for Banks Operating in the City of London (Radley & Associates, March 2004) People & The Workplace As Organisations change, so does the Role of the Workplace

e sourc s Man Re ag Historical an em m e u n Perspective H t WORKFORCE “the wages grow exponentially”

Lower qualified Less Aspirational Resistant to Change

Traditional division between Human Resources and Facilities Management

FM driven Desk/task area focus Functional

“a cost centre to be controlled” WORKSTATION

F ac nt ili me ties manage

e Mana orat gem Contemporary rp en Co t Best Practice wellness war for talent gymnasia esprit de corps brand in the workplace very aspirational Productivity factors management culture influenced by lighting: attraction, retention, motivation Speed WORKFORCE Persistence Living at Work Accuracy WORKPLACE Attraction lifestyle in the workplace Retention added value Motivation break out zones Satisfaction open change agenda Happiness common parts differentiation Potential Untapped Lighting flexiworking Dividend best practice lighting The Untapped Lighting Dividend

Single Path – Physiological

Generic practice Conventional lighting Visual Task Productivity (Louvred Downlights) Capabilities Performance Result

"Lighting and task Best practice Visual Task conditions Enhanced lighting Capabilities Performance that improve visibility Productivity (Direct/Indirect) lead to better task Dividend performance"

Dual Path – Physiological & Psychological

Physiological Path

“Lighting and task Visual Task conditions that improve Capabilities Performance visibility lead to better task performance” Productivity factors influenced by lighting: “People with dimming Personal Control Speed Task control showed more sustained motivation, and Persistence Performance improved performance on Best practice Motivation a measure of attention” Accuracy lighting Attraction (Direct/Indirect and Retention controls) “People with dimming con- Motivation trol reported higher ratings Satisfaction Personal Health & of lighting quality, overall Control Wellbeing environmental satisfaction, Happiness and self-rated productivity” The Untapped Appraisal “People who are more sat- Lighting Dividend isfied with their lighting, rate Health & Preference the space as more attrac- Wellbeing tive, are happier, and more satisfied with their environ- Mood ment and their work” *”This is the first time that this com- Psychological Path* plete path has been demonstrated” “Light is the key to well-being.” lighting design should be based workplaces – gymnasia, break- cal, rather than purely visual, – Le Corbusier on the latest scientific research out zones, thoughtfully designed aspects of lighting. into lighting and visual comfort – common parts. most of which is ignored in The leading financial houses in Constructing and operating a current advisory codes. As we The advantages gained by such the City of London and other building can cost a lot of money demonstrate on pages 12–15, hygiene factors are only just financial capitals have long – but not nearly as much as the this research points towards a beginning to be fully appreciated realised the importance of light- cost of the people who occupy number of significant conclu- – easier change management, ing – share dealer rooms, which the building. In the same equa- sions that are embodied in our sense of belonging, mirroring produce the most spectacular tion the cost of the lighting is whole approach to workplace the employees own personal profits, are always equipped insignificant. Comparatively lighting. aspirations – being just some. with state-of-the-art direct/indi- small investment in better design So, far from being a cost to be rect lighting systems. Most have and better lighting can have a These pages illustrate how good controlled, the workplace is sophisticated controls. Banks huge, positive knock-on effect lighting can pay dividends. The increasingly being viewed as an and share traders know that for many years to come. Con- historical management perspec- asset to be managed. But all such systems create the most versely bad design can push up tive of the workplace – a cost to the investment in hygiene fac- stimulating and visually comfort- long-term costs – while hitting be controlled – has lead to the tors and company culture can able working environments. the bottom line. adoption of a standardised, and be stifled if we follow the con- flawed, lighting approach for ventional, flawed lighting design However at Zumtobel Staff we In a world where the pace of offices. But there are signs of path. As business management don’t believe that the best light- change in work patterns, com- change. Exceptional businesses changes so must lighting begin ing should be confined only to pany practices and technology are beginning to incorporate a to reap the untapped dividends high profile bond traders and is accelerating, we believe that range of hygiene factors in their associated with the psychologi- the like – ordinary administrative staff and other grades should not have to compromise with inferior, direct downlighter systems, which surveys show are W Integrated Model ual ell-B vid e universally disliked. For the sake of Lighting Quality* di in n g of job satisfaction, visual com- I – visibility fort and general well-being, they – “Lighting is for more than – activity – social & communication also deserve the best lighting – visibility” – mood, comfort and that means direct/indirect – “Comfort is more than glare – health & safety systems. These central princi- control” – aesthetic judgement ples, derived from the findings of lighting science – direct/indi- * Jennifer A. Veitch, Ph.D. National Research Council of Canada rect lighting and dynamic, vari- www.irc.nrc-cnrc.gc.ca/ie/light The able light levels – lie at the core Untapped of this guide to office lighting. In Lighting combination they correspond to Dividend Zumtobel Staff’s central lighting – installation – form design philosophy, which can be – maintenance – composition summed up in the phrase “light- – operation – style – energy – codes & ing for people”. – environment standards

E ** A re conomics rchitectu ** see Chart page 7 AWB_Workplace_Q_Produktb_UK.qxd 02.05.2005 10:37 Uhr Seite 7

Economics THE CHANGING CORPORATE PERSPECTIVE 7

Extra for Best Photo: Allan Kell/Intelligent Buildings 2004 Practice

Potential Lighting Cost M&E Fitout Shell & Core Rent 15 Years People Costs 15 Years Untapped Lighting Dividend Construction Costs Business Operating Costs “I’m not saying you can walk on light: it doesn’t have structure, but it is part of the structure of the thinking of the architecture.”

Richard Meier WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 9

Workplace Lighting – Past, Present and Future Architect: Foster & Partners Architect: Lighting Research versus the Codes WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 11

“Light has a great influence on Office lighting design is in- Unfortunately our misguided lighting is a much more signifi- human sensitivity. It reaches creasingly bound by a whole codes have now come to pass cant factor in workplace health the depths of one’s heart and raft of recommendations and as good practice, because too and efficiency than is generally awakens something asleep standards emanating from the few skilled lighting designers recognised – and should be left there.” UK and the EC. A minority of get the opportunity to design to the real lighting professionals. – Motoko Ishii these standards and recommen- genuinely creative workplace The best, healthiest and most dations are useful – others, as lighting – as opposed to the effective lighting schemes result we shall see, are either out-of- reception area, the boardroom from qualified, experienced date, due to the fast-moving or the presentation suite, where designers thinking “outside the nature of office technology, or they are most often employed. box” – basing their designs not run contrary to the findings of Developers don’t see good, on outdated codes and recom- the most recent lighting research innovative office lighting as im- mendations, but on the latest in both Europe and the USA. portant, preferring instead to findings of lighting science. Take the official codification of allow non-lighting specialists to “dark light” louvred downlights design and install humdrum, On pages 12–15 we summarise in the 1980s, triggered by and even harmful, lighting, the conclusions of the most increased VDT use in the work- according to a crude distillation important pieces of recent place. As a result of that single of the Codes – an approach we research in the area of work- recommendation, office lighting sum up as “working inside the place lighting. Then on pages undoubtedly went downhil, as box”. As the introduction to the 16–23 we analyse current office we were plunged into a new DIAL research (see page 13) lighting standards and recom- “Dark Age”. The main problem pessimistically reports, “good mendations, to see how they was the Code’s concentration lighting designs are rare”. measure up to these research on luminaire selection in isola- findings. tion, rather than considering the At Zumtobel Staff we question entire office environment in a this approach. We would argue holistic way. that research indicates that

In 1992 Royal Life Holdings opened their highly innovative new Head- quarters in Peterborough in the UK, designed by Arup Associates. There was already recognition, re-inforced by the success of this building, that direct/indirect lighting provided a preferable airy, attractive workplace. Especially when considering the alternative gloom, so well illustrated here, of the lower height spaces alongside, fitted with the standard solution at the time – Category 2 downlighters. AWB_Workplace_Q_Produktb_UK.qxd 02.05.2005 10:39 Uhr Seite 12

The Lessons of Lighting Research

Light Right test site – In the most comprehensive study of its type researchers found overwhelming user preference for direct/indirect lighting systems.

1. Getting the In probably the most compre- space as more attractive, are To quote Ron Lewis, chairperson Light Right hensive study of its type con- happier, and are more com- of the Light Right Consortium, ducted in Albany, New York, fortable and satisfied with their “Lighting does matter. We have The “Light Right” Consortium researchers found that: environment and work.” sampled major US corporations is an independent authoritative • “This is the first time that and found a strong connection research body in the USA, • Good lighting improves pro- this complete path has been between lighting, productivity managed by the Pacific North- ductivity* demonstrated” and its overall value to busines- west National Laboratory and • 29–31 % of people under ses.” supported by the Illuminating downlight only systems rated Engineering Society of North them as uncomfortable * The Light Right website (www.lightright.org) reproduces the America, the International Asso- • 91 % of people were comfort- research and results. ciation of Lighting Designers, able with a system of direct/ Co-author of the Light Right research: the International Facility Man- indirect, wall washing and J.A. Veitch. She is much respected for agers Association, the US dimming control this and other work done with the Institute for Research in Construction, Department of Energy and the • Dimming control over work- Ottawa. US Environmental Protection station lighting “increased Agency, amongst others. motivation” and allowed users to “sustain their persistence and vigilance over time”, and be “more accurate” • “People who are more satisfied with their lighting rate the AWB_Workplace_Q_Produktb_UK.qxd 02.05.2005 10:39 Uhr Seite 13

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 13

DIAL research test site showing two examples below where accent lighting materially improved user perception of the space, compared with the conventional scenarios above.

2. Accent pictures and also onto desks, on Interest using spotlights or other point sources, were preferred over DIAL, the German Institute of all other scenarios. This finding Applied Lighting, is an extremely fits well with one of the central reputable and influential re- principles of Zumtobel Staff’s search body, which also produ- approach – that the best results ces DIALUX, one of the leading are obtained by a combination lighting industry software proof different types of luminaire, grammes. In 1999 it carried out which might include accent research into user preferences lighting (see Products and for a number of office lighting Resources). scenarios, using a variety of luminaire types (see photos). Subjects’ assessments were made in terms of functionality, impression of brightness and the overall attractiveness of the space. One of the central findings was that office scenes which contained additional accent lighting, particularly onto The Lessons of Lighting Research

The Fleischer research found that our preference for quantity and type of light Fleischer found a clear relationship between lighting conditions outside and varies according to task. inside. People prefer warm direct lighting when the sky is overcast, and indirect cool lighting when sunny. 3. Dynamic Lighting that “cool” colour temperature Fleischer concludes: “… It is 4. “Cool” Light for Stimulation lighting was more stimulating possible to draw up variable for the “Third Eye” than “warm” colour tempera- lighting situations … which pro- Susanne Fleischer is a promi- tures. vide an appropriate response The final body of research with nent German researcher who to the requirements for type of important implications for office until recently worked at the The implication is that a static activity, activation and well- lighting has recently emerged Institute for Hygiene and Occu- lighting scene throughout the being”. And again “It is therefore from a number of research cen- pational Physiology in Zurich. day, is not the best way to moti- possible to create lighting scena- tres, including Brown University She is the former head of the vate and enhance performance. rios for office applications which in the USA. The main findings “Lighting Harmony” research More desirable is a lighting sys- are ergonomically appropriate are that, firstly, light does not project, which has found that tem that can vary not just the and, moreover, which have a simply affect the human body people’s mood, motivation, per- level, but also the ratio of positive effect on people’s sub- through our sense of vision. It formance and feelings of satis- uplight to downlight, as well as jective well-being.” appears that we also possess a faction vary throughout the day, varying the colour temperature. so-called “third eye”, a unique depending on interior and ex- These functions are possible non-visual photo-receptor cell in terior light levels and their own with Zumtobel Staff lighting the retina directly linked to the internal circadian rhythms. In systems and are covered in pineal gland, which in turn regu- particular she found that people our pages on Active Light and lates our bodily cycles. preferred direct lighting when Balanced Light starting on the sky was overcast and indi- pages 34 and 35. What is particularly interesting is rect lighting when the sky was that this cell is especially res- clear and sunny. She also found ponsive to certain types of light, WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 15

Research shows that the “third eye” receptor is far more responsive to light at Levels of attentiveness vary over a 24 hour cycle. the blue end of the spectrum as shown. at the blue end of the spectrum York suggests that 18 lux of (410–460 nm). Exposure to blue light is more effective at Where the Research • Should have forms of control blue, or “cool” blue-tinted light, lowering melatonin levels than Takes Us that allow for varying light seems to encourage the pineal 450 lux of white light. levels and distribution patterns gland to suppress the produc- The implications of this body according to time of day and tion of melatonin (which makes of research for office lighting outside conditions us sleep) and therefore impro- design are clear: • A degree of local control is ves alertness. And the light • Offices should ideally have desirable doesn’t have to be very bright – direct/indirect lighting systems • “Cool” colour temperature recent discoveries at the Light- and wall washing lamps are best for maintaining ing Research Centre in New • Lighting should always be alertness and performance. achieved with a mix of luminaires

visual pathway (images)

photobiological pathway

blue light (especially) suppresses melatonin Current Guidance and its Limitations

Pentland International plc’s new North London headquarters – this 2003 British Council for Office’s Best of the Best Award winner features considerable lighting ingenuity. Architect: GHM Rock Townsend, Building Services: Fulcrum

Unfortunately, as we will see, 1. The BCO (CAT A) and Category B (CAT B) CAT A and CAT B most of the current codes Fit-Out Guide fit-outs for speculative office are either in conflict with one buildings – a distinction we Fit-outs Explained another – or don’t measure The British Council for Offices refer to throughout this publica- A CAT A fit-out is the most up to the findings of current is a hugely influential body that tion. The box at right summaris- basic fit-out (including floor research, being founded more represents the main players in es this distinction. Lighting is coverings, ceilings, floors, on outdated prejudices and office development. Its Fit-Out included in the CAT A fit-out M&E, WCs and most impor- half-understood ideas. Guide*, which is regularly up- provision, as part of “basic tantly, lighting) undertaken by dated in the light of new evi- mechanical and electrical servi- the developer and/or letting dence and changing market ces”, despite the fact that it is agent to sell the space in a conditions, is written by people impossible to know the final speculative development. who are both pragmatic and users’ needs and furniture confi- It is based on an open-plan market-led. Due to the growing guration at that stage. It is, working scenario but is influence of the BCO, its guides however, again mentioned usually potentially sub-di- are rapidly pushing other under CAT B as part of “Mecha- visible, if necessary. As soon Codes, such as those generat- nical and electrical services as a client has been found, ed by CIBSE, to the margins. tailoring and upgrades”. he will take on the open-plan specification – or will com- One of the important distinc- * The BCO also publish a Best Practice Guide, the 2005 edition to which mission a different fit-out. tions the BCO makes in the Zumtobel Staff has contributed. latest Fit-Out Guide (October 2003) is between Category A WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 17

Wessex Water, near Bath, U.K. This building is one of very few ever to have achieved an “Excellent” rating under the BRE Environmental Assessment Method. Wessex Water was the first ever to achieve the highest possible rating of 10. Architect: Bennetts Associates, Building Services: Buro Happold

In fact, as yet, lighting is not a no added value in appointing lighting schemes, to cope with A CAT B fit-out is a bespoke major priority for the BCO – specialist lighting designers for future change, with addressable fit-out commissioned if the there is no specific mention of the lighting fit-out of the areas lighting controls and modular client comes on board at an lighting on the Contents page of where most ordinary staff work lighting systems. In its summary early stage – or after the CAT the current Fit-Out Guide – it is for most of the day. When they of the different types of lighting A fit-out has already been instead lumped in with “Building do appoint them, they do so system available, it does give installed. It may include a Services”, so advice is difficult only for the specialist areas of suspended, or freestanding, new lighting scheme, blinds, to find. When you do find the the shell-and-core, such as the direct/indirect systems the high- partitions, IT systems, tele- small section on lighting, the entrance area and the atrium. est recommendation. phones, wall finishes etc. message is mixed, but it com- Often, but not always, the mences with the following For the rest the BCO Guide is Daylight use and control is CAT A scheme, including the important observation: the only UK advisory document briefly mentioned – and there is lighting, will be ripped out that refers to VDT screen testing an awareness of the issue of and everything re-specified “Design guidance is no longer and the recommendations of glare. The Guide states “use of from scratch. For obvious prescriptive and allows consider- EN29241-7 (see page 26). It blinds … should be considered reasons, a CAT B fit-out will able freedom for a suitably quali- also proposes varied lighting early on in the design process”. usually cost more than a fied and experienced designer levels between 500 and 300 lux Zumtobel Staff would take this CAT A scheme. to produce certified, compliant with provision for task lighting further – in fact, on page 32 we schemes of the quality required.” for the visually impaired and make a strong case for blinds energy use targets for lighting in being included as part of the Unfortunately, as we have alrea- CAT A fit-outs of 12 W/m2. CAT A fit-out. dy discussed, developers see There is an emphasis on flexible Current Guidance and its Limitations

Part L encourages the use of direct-indirect luminaires. The BRE “Ideal office” is their own signature office and makes full use of indi- Video Arts. Building Services: Downie Consulting rect-direct lighting, even being incorporated under the downstand areas. The wave-form ceiling provides a very even fall-off of ceiling luminance. 2. Building Regulations The first thing to say is that the 3. BRE Credits are awarded against the (Part L) advent of Part L has made Environmental Assessment criteria and an overall score for Commercial Buildings many professionals concentrate Method (BREEAM) rates the building as “Pass”, exclusively on designing for “Good”, “Very Good” and The Building Regulations (Part L) energy savings at the expense For over a decade, the BRE’s “Excellent”. On the BREEAM for Commercial Buildings, 2001, of other criteria. Lighting design Environmental Assessment for offices checklist, the salient as applied to lighting, are the driven solely by energy use is Method (BREEAM) has been criteria related to workplace British government’s latest rather not necessarily good design. used to assess the environ- lighting and visual conditions are blunt instrument for cutting For example a scheme using mental performance of both included in the section “Health energy use in buildings, to com- only direct downlighters may new and existing buildings. It is and Well-being”. Some of these ply with the Kyoto agreement on well comply with Part L, but it regarded by the UK’s construc- are already standard practice, climate change. In summary, for will not create visually comfor- tion and property sectors as but some are not so well known: commercial buildings (with some table working conditions for the measure of best practice minor exceptions) Part L speci- people who work there. Good in environmental design and • At least 80 % of the net lett- fies a maximum energy use of lighting design is lighting desig- management. The building able floor area should be ade- 40 luminaire lumens per watt ned for people, who in the long types covered by BREEAM are quately daylit. averaged across the entire buil- term are much more important offices, homes, industrial units • There should be an occupant- ding (and according to recent than energy savings – but there and retail units and the pro- controlled system of glare government statements, this is no reason why good, visually gramme’s main criteria concern control (e.g. internal or exter- may be increased by 25 % in comfortable lighting designs energy use and health and well- nal blinds). the near future). can’t easily comply with Part L. being, amongst other things. • High frequency ballasts should be installed in office luminaires. WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 19 RT Rafn Sigur∂sson Photo:

This European installation would undoubtedly score “very good” or better The LIGHT FIELDS suspended direct/indirect range incorporates the MPO under the BREEAM rating system. (micro-pyramidal optic) to ensure glare-free lighting whilst having a very high LOR (up to 86 %). • Maintained lighting levels Under the Energy section, there • The provision of high frequency should be between 350–400 lux is no specific reference to the dimming ballasts as a mini- and the louvre design should traditional measure of power mum in perimeter zones. comply with the LG3 Adden- usage (W/m2) nor to Part L’s term, • Localised task area lighting dum 2001. Luminaire Lumens per Circuit instead of uniform lighting. • Control systems for lighting in Watt. Rather, BREEAM predicts • Mandatory daylight dimming open-plan office spaces, energy use and measures these controls where the Daylight

where there is circulation in CO2 emissions (see page 45). Factor exceeds 2 %. space and daylighting, should • Lighting systems that have be zoned into groups, with BREEAM’s programme is an gained high user preference in any one lighting group cover- important and worthy initiative recent research surveys. ing no more than four work- in the push to improve our • Amendment of the emphasis places. commercial building stock. on louvre fittings, which • All workstations should have However, if BREEAM is indeed seems to mitigate against a view outside (open air or promoting Best Practice, it other lighting solutions, such atrium) with a maximum dis- should incorporate the following as direct/indirect systems, tance of seven metres (approxi- design measures in its checklist: which the BRE has installed in mately two office desk spaces) its own signature building! In to the nearest window. • The installation of blinds as any case LG3 expressly exclu- part of the Cat A fit out, des compliance by luminaire because they are expensive selection only. additions at the Cat B stage. Current Guidance and its Limitations Building Services: Jones King

The latest generation of MELLOW LIGHT (IV) showing excellent wall and ceil- This Highly Commended installation was designed by Pinniger & Partners in ing luminance. 1993, predating the LG3 Addendum by 8 years. This is simply a Category 3 luminaire modified by a dropped defractor to put light on walls and ceilings. 4. SLL (CIBSE) 5. SLL (CIBSE) Lighting rating system for luminaires and Code for Lighting Guide 3 (LG3) – instead introduced a “Certificate The Visual Environment for of Conformity”, which addressed The CIBSE SLL Code for Light- Display Screen Use all the relevant issues, and requi- ing is one of the best, most red the room, not the lighting comprehensive textbooks avail- LG3 is probably the most used equipment, to Comply with LG3. able on the lighting of interiors. document over the last decade It includes not only detailed in terms of lighting specification While retaining some of the use- schedules of illuminance for for offices. The document com- ful design tenets of the earlier different types of space, it offers prises an erudite dissertation on LG3, including the need to put a welter of good lighting design the issues, problems and solu- light onto walls and ceilings, the advice, a survey of various tions of lighting spaces for Addendum adopted very odd visual effects and an extensive VDTs. The document has, how- criteria for ceiling lighting – and glossary of terms. ever, been generally misapplied missed an opportunity to up- in that users ignored the objec- date its advice on VDT screens: tives of lighting the room but rather defaulted to compliance A. The latest LG3 puts too by luminaire selection only. much emphasis on lighting the walls by prescribing a task/wall/ To counter this problem the SLL ceiling illuminance ratio of issued an Addendum in 2001 100/50/30. However, wall illumi- that dropped the “Category” nance really only has significance WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 21

Arup Associates own offices illustrate the benefit of direct-indirect lighting With no view to the exterior this training centre is saved by the direct-indirect despite the low ceiling height. lighting solution. for the visual appearance of up to the ceiling?). And the best As long ago as 1997 BS cellular offices (where much of way to ensure a bright ceiling is EN 29241-7 (Ergonomic Requi- the wall area is likely to be gl- by using direct/indirect lighting rements for Office Work with azed in any case). In the vast systems. Situations where a Visual Display Terminals) recom- majority of offices, which are direct/indirect approach is not mended screen testing, to dis- open-plan, the walls are gene- possible, due to low ceiling cover the actual glare limits of rally too far away to make much heights, are discussed on page individual types of screen, but of a contribution to the visual 50–51. LG3, written four years later, scene. does not recommend this course B. More importantly, LG3 is of action – instead it has arbi- We would argue that in terms of still fixated on lighting for VDT trarily chosen a fixed upper the visual appearance of most screens rather than people, luminance limit on fittings of office spaces, getting light onto whereas recent advances in flat 1500 cd/m2. This figure was not the ceiling is far more important screen VDT technology threaten chosen on the basis of any as the large area of the ceiling to make this issue a dead duck genuine research and is already dominates the peripheral vision. within two years. Most modern massively out-of-date, as the However, ceiling brightness is a positive (black on white) flat real figures for different VDT luminance issue, not a question screen VDT terminals are not screens in the Table on page 25 of illuminance (is LG3 compliance susceptible to luminaire reflec- show. Some modern screens really going to be tested by tions – but in any case they can can now tolerate luminances engineers standing on desks, be easily tested to determine above 5000 cd/m2 without cau- holding their illuminance meters their actual susceptibility. sing visual discomfort. Current Guidance and its Limitations

To avoid gloom, increase the percentage of light on the ceiling far beyond the Pillars and air-conditioning are two more considerations when designing “task recommended levels. area” lighting.

6. SLL (CIBSE) Lighting the illuminance ratio of the 7. BS EN 12464-1 One major development embo- Guide 7 ceiling to the working plane died in BS EN 12464-1 is that (LG7) Office Lighting Guide should be 20 % – another 10 % BS EN 12464-1 has recently the concept of “maintained illu- lower than even LG3 and the been published as a British minance” and the UGR glare The draft copy of this document BCO Guide – which would Standard in an endeavour to index system have been intro- is fairly extensive, but few people de-prioritise the lighting of the harmonise lighting standards in duced to Europe for the first will find the document of great ceiling even further. Europe – an effort that has time, although the UK has been interest. In fact it is unclear why taken many years. EN 12464 familiar with these for years. it has been produced at all, does not give detailed design EN 12464-1 also contains an except as a fund-raising mea- advice and in this regard the extremely low (1000 Cd/m2) VDT sure. LG7 has all the hallmarks SLL Code for Lighting (see luminance limit which is clearly of being written by a committee page 22) seems set to remain nonsensical today, but probably over an extensive period of time the “bible” of applied interior reflects the time the document – for example, all the criteria lighting. took to prepare and produce. relating to VDT lighting remain the same as LG3 Addendum

2001. However, there is no task area mention of EN 12464-1 or height = EN 29241 and most of the com- 0.75 m mentary is very basic and ele- user floor-area mentary. Most worryingly, it makes a recommendation, that 1.00 m WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 23

Lighting for People: MELLOW LIGHT IV Balanced offers the opportunity to alter the colour temperature throughout the day in response to user preference.

BS EN 12464-1 strongly encou- 8. The Disability 9. Conclusion the findings of the most advan- rages designers to adopt “task Discrimination Act ced lighting research offer a area” lighting (known in the UK Many of the current lighting more solid starting point for as localised lighting) which is the While it is not possible to dis- codes and recommendations, lighting excellence, than out-of- positioning of luminaires over, or cuss all the measures pertaining most notably LG3, LG7 and date codes and confused and close to, the main working area. to lighting and the interior en- Part L, are way behind con- contradictory recommendations. This is defined as the desk area, vironment embodied in this Act, temporary lighting research – In the following Section, we out- plus the notional chair zone, as we firmly believe that lighting and on the whole, do not offer line our distinctive approach to depicted in the diagram oppo- that has been well designed, effective guidance to produc- some of the central issues. site. It proposes lighting to according to the approach spelt ing quality lighting design for 500 lux within the task zone, out in this brochure, should the workplace. Others, such reducing to 300 lux elsewhere. meet all the necessary require- as the BCO Fit-out Guide and ments. However, it should be the BREEAM proposals, are Localised lighting systems have stressed that designers should flawed but also have much to long been considered in the UK. take cognisance of the Act, commend them. Reduced power density and and the needs of the visually energy usage make them attrac- impaired, when proposing a re- On the whole, Zumtobel Staff tive but they do require the duction in workplace light levels, prefers to base its approach to designers to know the space- for energy-saving or other pur- lighting design on the principle planning at early concept stage. poses. of lighting for people and their This is not likely in the specula- visual comfort. We believe that tive developer led UK market. Key Issues in Workplace Lighting WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 25

“We find beauty not in the thing When thinking about office light- rather than within the confines itself but in the patterns of ing design, there are a number of the orthodox, but misguided, shadows, the light and the of key issues that need to be recommendations embodied in darkness, that one thing considered. In this section we the codes, we will demonstrate against another creates.” look at these issues in the light that more pleasant, visually – Jun’ichiro Tanizaki, In Praise of the most recent research out- comfortable and stimulating of Shadows lined above – and put forward office spaces can be created as our considered design recom- a result, while at the same time mendations and solutions. By achieving a Certificate of Con- designing “outside the box”, formity.

2 Blurred Lmax (cd/m ) Type Make and Model Date of Class Luminaire types with Image positive manufacture enhanced brightness

9500 CRT LG Flatron 915 FT Plus Dec-02 I 4900 FPD Nokia 500Xa 15" FPD Jun-99 I 4400 FPD Compaq TFT 5005 15" FPD Oct-00 I 3800 FPD LG Flatron LCD 575 MS 15" FPD Nov-00 I 3700 FPD NEC Multisync LCD1760NX Apr-03 I 3700 CRT Samsung Syncmaster 700 IFT 17" CRT Nov-99 I 3500 FPD NEC Multisync 1810X Nov-01 I 3500 FPD Nokia Pro 800+ 18" FPD Oct-99 I 3200 FPD Dell Ultrashop 1504FP Nov-02 I 3100 CRT Ilyama LS902UT Visionmaster 1451 Feb-02 I 3000 FPD NEC 208UX+ Nov-03 I Brighter luminaires = Increasing tolerance to Light, airy, upbeat reflections 2700 FPD Ilyama TXA 3813MT 15" FPD Not Known I environment 2500 FPD NEC 1980X Jan-04 I Darker luminaires = Reducing tolerance to 2200 CRT Compaq 7500 PE1163T Feb-02 I Gloomy, oppressive reflections 2000 FPD LG 560LS Jun-01 I downbeat environment 2000 LAPTOP Toshiba Tecra 8000 LAPTOP Jun-98 I 1900 FPD Samsung Syncmaster 700 TFT 17" FPD Not Known I 1800 FPD LG Studioworks 500 LC 15" FPD Feb-99 I 1700 FPD LG 1510S Aug-02 I 1700 FPD Samsung 15" FPD Not Known I LG3:2001 B2.1 1500 cd/m2 limit 1400 FPD LG Studioworks 880 LC 18" FPD Dec-99 I 1400 CRT Dell D828L 14" CRT Dec-97 II 1300 CRT Samsung Syncmaster 753s Oct-01 I 1200 CRT Samsung Syncmaster 550s 15" CRT Not Known I

Sharp LG3:2001 B2.1 1000 cd/m2 limit Typical “Cat 2” Image 900 CRT AOC 4NLR 14" CRT Jan-95 I modular downlight

Please visit our website for further details: http://www.zumtobelstaff.co.uk/screentesting

“Standards and Regulations 1. Taking the Screen Above is a table of actual mea- are out of step with Current Test Results sured data for many types of Research” screen. The screens were origi- – Bob Venning, Director of Arup The luminance limitations given nally tested following Lloyd, Lighting, LEN April 2004 in LG3 are not emphatically Mizukami, Boyce, A preliminary derived and bear no resem- model of lighting display interac- blance to actual fact. tion 1995 and more recently BS EN 29241-7. Ergonomic requirements for office work with visual display terminals. Key Issues in Workplace Lighting

Layout of Zumtobel Staff’s screen test laboratory. Since time immemorial luminaires with a sidelight component (opal diffusers in this case) have contributed to the appearance of ceiling brightness.

1. Taking the office lighting scheme around 2. Putting Light “Ceiling Brightness Impression” Screen Test – Conclusion mere supposition. So we offer a on the Ceiling or CBI for short, which takes service to all our clients to have into account the visual bright- As we have already demonstrat- a sample VDT screen tested at On previous pages we discussed ness of the fittings themselves ed, the correct procedure for our state-of-the-art facility. the importance of putting light as contributors to the overall determining the glare limits of on the ceiling, in terms of the brightness of the ceiling. VDT screens is not to set an More recently ISO BS EN 13406: overall visual brightness of the Erroneously, this is something arbitrary figure but actually to 2002 entitled Ergonomic requi- space. This is best done with that CIBSE and SLL have pre- test them, as recommended in rements for visual display units direct/indirect luminaires, offering cluded in LG3. BS EN 29241-7 Ergonomic based on flat panels has been variable ratios of lighting distri- Requirements for Office Work introduced. BS EN 13406:2002 bution, which can be digitally So let’s examine a user’s real with Visual Display Terminals, is based on the same basic prin- controlled for different condi- visual impression of two office 1997. Some of the latest results ciples as BS EN 29241 but with tions and times of day. spaces. In this visual test, there for modern screens are shown additional measurements and cal- are two vistas of the same office in the table on page 25. In fact culations required. These are However, as we have already equipped, firstly, with recessed in the UK only Zumtobel Staff included in the Zumtobel Staff discussed, this is not always louvre light fittings and, secondly, currently undertakes screen testing of such screens. possible, due to low ceiling with recessed dual component brightness tests, according heights or the requirement to fittings, both seen from normal to the recommendations of Contact our Technical Depart- maintain an existing grid of viewing angles. It is quite clear BS EN 29241-7. We believe this ment for more details. recessed luminaires. Here we that the ceiling in the second is the correct course of action, www.zumtobelstaff.co.uk/ recommend an alternative installation appears considerably rather than designing the entire screentesting design approach which we call brighter, even though the illumi- WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 27

Dark louvred fittings give an impression of a dark ceiling while self-luminous luminaires quite evidently make the ceiling appear brighter. nance of the ceiling surfaces is To demonstrate further the LIGHT or SYNTO, make a Guide) “the creation of a com- the same. importance of CBI, Zumtobel strong contribution to the CBI fortable, stimulating visual en- Staff has developed special of a space, whereas non-self- vironment by careful control of The only conclusion is that the software based on the repu- luminous luminaires (such as surface brightness and contrast brightness of the luminaires table, well-established CIE Glare standard “dark light” louvres) ratios”, how can CBI not be themselves makes a real contri- Algorithm, to enable accurate have a negative effect on CBI. taken into account? bution to the ceiling’s overall calculations to be made of the In both cases the CBI effect brightness, because the eye exact additional brightness must be taken into account, For further information about combines the different bright- gained from the use of self-lumi- because brightness contrasts CBI or information on our CBI ness contrasts within the field nous, dual component fittings. strongly influence the cognitive calculation software, go to our of view. This is the principle of The results come in the form of experience of a space and a website: the term Ceiling Brightness a table of CBI values for lumi- users’ appreciation of its visual www.zumtobelstaff.co.uk/CBI Impression (CBI). The use of naires viewed both crosswise quality. self-luminous, dual component and endwise, which can then be fittings can be seen to have a added to the existing percen- There is no logic to CIBSE and positive effect on how the en- tage of task illuminance on the SLL’s refusal to allow luminaire vironment appears – and, at the ceiling, to derive the total ceiling brightness to be considered as same time, dark, non-self-lumi- brightness (see website for an important, contributory factor nous luminaires can have a more details). in the apparent brightness of negative effect on CBI. the ceiling. If the overall objec- In conclusion, dual component tive of any lighting design is (in luminaires, such as MELLOW the words of the BCO Fit-out Key Issues in Workplace Lighting AWB_Workplace_Q_Produktb_UK.qxd 03.05.2005 11:20 Uhr Seite 29

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 29

3. Walls in the 4. Guaranteeing We feel that the Declaration Cellular Office Conformity of Conformity is a useful vehicle for allowing and encouraging The lighting of walls becomes a The concept of the Declaration good designers the freedom to major issue in cellular offices, of Conformity, to be signed by work “outside the box”, to pro- which tend to be the premium designers at the end of a light- duce creative, visually interest- office spaces arranged around ing project, to guarantee its ing lighting schemes. In such the perimeter of the building. compliance with codes on ergo- cases, only trained, experienced Most often two of the four walls nomics, health and energy use, members of the CIBSE Society will comprise windows and was proposed in the latest LG3 of Light & Lighting (SLL), the glazed interior partitions. The document – probably in too International Association of window wall will require effec- hurried a fashion, without suffi- Lighting Designers (IALD) and tive, light-coloured blinds for cient consultation. As a result the European Lighting Design- solar control by day and to aid take-up has been patchy, partly ers’ Association (ELDA) should the lit effect after dark, when because it is not a legal obliga- be given the responsibility for they serve to reflect light back tion and designers are worried issuing a Declaration of Confor- into the room, rather than the about it affecting their professio- mity to LG3 or Part L. window appearing as an unlit nal indemnity. The main drivers dark hole. of the Declaration of Conformity are Zumtobel Staff and the We would generally recommend BCO, whose Fit-Out Guide calls multi-component luminaires for for the artificial lighting to be such spaces to increase the “provided with a Certificate of degree of ceiling brightness – Conformity to LG3 and Part L”. these could be direct/indirect systems or dual component fittings (see page 50). Where downlighters are used, it is important to select one of the interior walls and make sure that it is well lit, through the Society of Light International Association European Lighting use of additional perimeter wall and Lighting of Lighting Designers Designers’ Association washers.

Without windows, providing good illuminance on some walls makes all the difference. LG3 2001: Certificate of Conformity Natural Light, Active Light & Balanced Light WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 31

“Surfaces define the shape of 1. Working Diffuse daylight from an over- during this process, of lighting our world; light allows us to with Daylight cast, but possibly still quite quality. This is because lighting see them.” bright, sky solves many of the control system sellers are, in the – George M Whiteside, On the While artificial lighting has be- problems associated with direc- main, electrically biased, rather Surface of Things come increasingly sophisticated tional sunlight. The light quality than qualified in lighting. They in recent years, it can’t compare is generally diffuse with slow tend to consider energy as the with our greatest light source – rates of change and reduced number one, easily quantifiable daylight. Daylight and sunlight is contrasts. target, while issues such as free, unlimited, non-polluting glare, contrast and the psychol- and full of variety – and research Despite the contribution daylight ogy of the lit space, do not im- shows that access to daylit can make, modern artificial pinge on their thinking. Zumtobel views is seen as highly desirable lighting is nearly always planned Staff believes that simply dim- by office users. with the “worst case” scenario ming down or switching off in mind – i.e. that it is completely artificial lighting, as daylight So on visual comfort and energy- dark outside. Many buildings increases, is an over-simplified saving grounds, any modern employ conventional switching approach – in fact, in many workplace must recognise the techniques which often mean situations it may be desirable presence and desirability of day- that all the light fixtures remain to increase the light output of light – and should be designed switched on, irrespective of the artificial lighting as daylight to make best use of it, in a fully daylight state. More sophisti- increases. integrated manner. cated buildings often employ various forms of photocell-based However, natural daylight pro- lighting control system, which vides both a threat and an are, on the whole, usually speci- opportunity. Direct sunlight can fied to achieve one purpose create uncomfortable visual alone – energy savings. This conditions – excessive illumi- usually means that as daylight nance, discomfort and disability increases, artificial lighting is glare, screen reflections, and dimmed; and when daylight sometimes constant, rapid reaches a sufficient level, it is change – as well as thermal dis- eventually switched off. comfort. Brightness contrasts within a space can be consider- While the energy savings accrued able for people moving in and by such a system are signifi- out of a direct sunlit area. cant, little account is taken Natural Light, Active Light & Balanced Light

The highly sophisticated blinds used here turn conventional wisdom on its When the blinds are fully closed the view out is partially preserved and the head. When fully open they allow an unrestricted exterior view but with possi- glare threat eliminated. However, contrary to conventional thinking, ceiling illu- ble glare issues. The compensation for this are the bright interior surfaces. minance is increased because the blinds are designed as “sun scoops”. We also believe that the provi- lit effect within the space. provided in the basic Cat A fit- sion of blinds should be part of Without blinds, the windows out for office developments (see the fundamental lighting design become “black holes” after page 16–17). Instead, they tend package for any building. While dark, allowing a great deal of to be provided as part of a Cat blinds are conventionally seen wasted light to exit the building. B, tenant fit-out after the light- as part of the architectural de- ing design and installation has sign, their relevance to lighting Manually controlled blinds are long been completed. A sub- should not be under-estimated. the norm but experience shows standard, uncoordinated result During the day properly desig- that user positioning invariably is almost inevitable. ned, light coloured blinds can leads to a chaotic and messy be used to maximise the advan- appearance. Electrically operat- tages of daylight, while avoiding ed, automatically controlled the downside of glare – and blinds are normally outside the at the same time, they can pre- scope of ordinary control sys- serve important exterior views tems that typically use internal, from inside the building. Particu- room photocells which cannot larly in small cellular offices, cope with sophisticated require- they also have a vital role to ments. The provision of blinds, play at night, by acting as light preferably properly automated reflectors on one, or occasio- and controlled, is a fundamental nally, two window walls, which factor in the visual comfort of an has a huge influence on the interior. Yet they are seldom WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 33 Slaughter & May, London Slaughter & May,

These 2 photographs are of the same office but inside and outside the perimeter zone. The areas are functionally similar but are fundamentally different in their access to daylight and therefore require different but complimentary lighting approaches.

2. Lighting for the closer to the centre of the sections here tend to be solid, types for the daylight and deep Perimeter Zone building may experience the en- so precluding rows of recessed plan zones. Either area could vironment as gloomy and poorly downlight troughs. use Combination lighting or Moving into the building away lit, due to the contrast of their Balanced lighting, both of which from the windows, we come space with the perimeter. Where possible, Zumtobel Staff could also be Active Light sys- across the “transition zone” or advocates designing specific tems. “perimeter zone” between natu- In this situation there is a strong and different lighting layouts and rally lit and wholly artificially lit argument for different lighting interiors. This often neglected systems to be used in perimeter Full height windows area is critically important in and deeper plan areas, to ease allow high levels of day- determining the appearance, the transition from daylight to light but the extreme risk of glare makes feel and balance of the entire artificial light. However, the blinds essential. The space. For a start, the contribu- standard solution has been to choice of blinds in this situation follows good tion of daylight can, depending apply a uniform, regular array practice – they are light on the window design, remain across both these areas, ignor- in colour and preserve a view. The artificial significant even considerable ing that they are completely lighting illuminates all distances into the space. For different (except at night). Alter- surfaces providing a good balance of bright- example, while high levels of natively there is a strong ten- nesses. daylight within the perimeter dency to put circular recessed areas tend to create bright, downlights along the window upbeat environments, those wall, for no rational reason workers who are positioned other than the fact that ceiling Natural Light, Active Light & Balanced Light

These two scenes show how, by using the LA TRAVE direct/indirect lighting system, the lighting ambience can be changed dynamically across the day to suit different conditions.

3. Active Light The best Active Light systems carefully designed lighting allow: scenarios, based on the kind of Daylight changes constantly in • Changing intensity of light research outlined on pages quantity, directional characteris- • Changing direction of light 12–16, can both enhance and tics and colour. The Active Light • Changing colour of light echo exterior illumination – and concept, pioneered by Zumtobel • Changing patterns of daylight enhance people’s motivation Staff, is an attempt to introduce through blind control and willingness to perform. an element of change into artificial lighting in order to mimic At the same time, by taking the patterns of daylight. Surveys into account our “circadian show that people prefer the rhythms”, which are determined dynamic, constantly changing by our biological clock and character of natural lighting and synchronised by daylight, it is the objective of artificial lighting possible to influence human ought to come as close as pos- physiology and psychology, and sible to this ideal. thus increase motivation and performance. From an ergonomic point of view, it is desirable that the working environment changes over the course of the day, in order to enhance the attention of staff. A series of WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 35

A balanced light installation which also uses most of the principles of A combination of recessed dual component luminaires and perimeter down- Active Light. lights. A new standard at Canary Wharf.

4. Balanced Light Dimming the two light sources 5. Combination Lighting (or components within a single The most important aspect of fitting) gives access to quantity Combination Lighting is a rather the Balanced Light concept variations, while the separate, simpler lighting set-up which is that it offers variable Flux selective control of the direct involves two or more types of Fraction Ratios (FFR), which is and indirect lighting compo- luminaire to achieve any lighting to say the potential to vary the nents can be used to alter effect – for example a simple LUXMATE EMOTION Workspace upward and downward lighting fundamentally the directional downlight, combined with a peri- combines intuitive control and components. This can be achie- character of the light. Equipping meter wallwasher. In its simplest extremely professional use of DALI technology without actua- ved using a single luminaire, the luminaires with mixed colour form, Combination Lighting tors and dimmers; a specific such as the Zumtobel Staff La temperature light sources also could be just bulk switched ACTIVE LIGHT script based on scientific and ergonomic know- Trave fitting, equipped with sep- allows fundamental colour tem- on/off, or separately switched, how can be prepared for office arately controllable lamps for perature changes, making it or dimmed – and the FFR lighting. direct or indirect lighting. This possible to balance the colour needn’t necessarily change. allows almost infinite variation in characteristics of the lighting the character of the lighting. from warm and homely through Alternatively, Balanced Lighting to cool and businesslike. might be achieved by a combination of two luminaire types, such as a downlight and a free- standing uplight. Natural Light, Active Light & Balanced Light

This novel “partial” blind system is automatically activated at night and at cer- Here the blinds are lowered sufficiently to filter out glare at high angles but tain times of the day. The suspended LIGHTFIELD luminaires create very even allow sunlight to penetrate at low levels, preserving the wonderful patterns lighting to the ceiling, walls and closed blinds. and shadows of daylight. 6. Controls can be easily “fooled”, since Even Zumtobel Staff Basic day- Any artificial lighting deserves they measure a combination of light systems use sensors which the use of lighting controls, the The BCO Fit-out Guide states natural and artificial light. are aimed out of a window most sophisticated of which that lighting controls are a fun- in order to register accurate offer control of individual lumi- damental part of lighting design. While changing light levels are changes in natural lighting, naires, or even the individual The simplest controls provide desirable, the illogical fluctuation rather than measuring a mis- lamps within those luminaires. energy savings and flexibility of illuminance resulting from leading combination of daylight The controls software should but more sophisticated systems poorly designed sensors is one and artificial light. permit a variety of scenes to be can be used to integrate day- of the main reasons why day- pre-programmed and called up light in a more genuine way. light control systems are often The Basic daylight module then at any time. For Active Light Measuring incoming daylight sabotaged by users. By con- allows three separate groups of situations, specific Active Light and adjusting artificial lighting trast, Luxmate Professional* luminaires to respond differently software, which is easy-to-use levels accordingly seems like a daylight systems use a roof- to daylight. So, for example, yet highly sophisticated, is simple method of integrating mounted sensor which measur- a row of perimeter luminaires essential. artificial and natural light. Yet es the quantity of light, its illuminating the wall sections user acceptance of this simple direction and overall sky bright- between the windows, or the * www.luxmate.co.uk technique can be very low ness, in order to register accu- window mullions, could be unless lighting controls are rate changes in the amount and programmed to dim up as day- carefully designed. Most sys- quantity of daylight and adjust light increases. This will reduce tems employ ceiling-mounted the lighting and blinds automati- the contrast between wall and/ sensors, which measure inci- cally. or mullions and the windows dent light in the room – but they themselves. WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 37

These two photos show how scene-setting controls can create a totally different ambience and lighting balance within a space.

7. Scene Setting which infers there should be Scene setting can even be applied to circulatory several luminaire types, each areas. The value of scene setting as performing a different function. a lighting control technique In this way users can generate has largely been lost in recent their own “stage sets” to create years. Over-complicated con- different lighting moods within trols, which force the end user the space, for different activities. to default to factory pre-sets, Realistically, such scene settings coupled with poor understand- can only be orchestrated when ing by controls professionals the space planning and function of lighting issues, means that of the room is known, and the balanced and easy-to-use interplay of blind control for scene-set systems are few and daylight is integrated into the far between. various scenes.

Scene setting is often misunder- stood as being the ability to preset several different lighting levels of one luminaire type in a given room. Its real value involves the ability to choose different lit effects in a room, Further Considerations in Workplace Lighting RT Rafn Sigur∂sson Photo: WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 39

“More and more, so it seems to 1. Lamp The chart below demonstrates from Zumtobel Staff include the me, light is the beautifier of the Brightness the current range of T16, T26 Aero fitting, with the Eldacon building.” and compact fluorescent lamps Panel which uses a technique of – Frank Lloyd Wright It is an unfortunate fact that as with their recommended bright- “distributed” lamp image, and the modern lamp sources get small- ness threshold zones. If these Mellowlight range, where the lamp er and more efficient, their sur- lamps are used in open fixtures, is diffused by a Gridmesh optic. face brightness increases – this one should always consider Several other Zumtobel Staff pro- can be a problem with open some form of lamp obscuration. ducts have refractor accessories light fixtures in an office, where In general the brightness of that can be added to mitigate the a small, but very bright light High Efficiency (HE) T16 flu- problem of using HE T16 lamps. source can create visual distrac- orescent lamps at 15,000– tion in the field of view. Even in 17,000 cd/m2 are within tolera- For this reason we would unequi- luminaires with vertical louvres, ble limits for direct viewing – but vocally recommend specifying an which reduce the sideways visi- High Output (HO) lamps at HE lamp, rather than its HO equi- bility of the lamp, the view between 25,000–32,000 cd/m2 valent, in any luminaire offering a directly upwards into the fitting exceed these limits, while TC-L, direct view of an unshielded lamp can be visually uncomfortable TC-D and TC-T lamps are even from any position in the work- and can often be peripherally brighter, at 30,000 cd/m2 up place. In 600 mm modular lumi- glimpsed as a distracting area to a massive 70,000 cd/m2, naires this is always an option. In of brightness – what has been depending on wattage. addition, there are energy saving dubbed “eyebrow glare”. This benefits – as their name suggests, issue of lamp brightness is Of course, many of the latest HE lamps trade lower light output much more significant in interior luminaire concepts have human for higher energy efficiency (in spaces, where people are visual comfort as the highest fact, energy efficiency is about working over a full working day, priority – and therefore have 15 % greater for these lamps). than in a circulation space or a some form of integral lamp However this is not always possi- sales area. obscuration device. Examples ble – see page 41.

Luminance of Fluorescent Lamps

MPO technology incorporated into the LIGHTFIELDS range overcomes the lamp glare of even the latest light sources, with little effect on the LOR. Further Considerations in Workplace Lighting

Optimum light output for T26 and T16 lamps is achieved at 25 °C and 35 °C Bypass air handling in the MELLOW LIGHT IV, with either TC-L or T16 lamp respectively. options, avoids any cooling of the lamp.

2. Lamp Operating of air handling luminaires – see 3. Air Handling with mum air volumes for generic Temperatures 3. Air Handling Most contem- T16 and TC-L Lamps luminaire types are readily avail- porary office fittings are not only able. Another important consideration small in scale, commensurate The issue of air return lumi- in choosing lamps is the issue with the T16 lamp itself, but naires, still a popular option with Please contact the Zumtobel of operating temperature. In their operating efficiencies are of M&E consultants, is another Staff Technical Office for former times fluorescent lamps significantly higher order than important consideration. advice lost efficiency when used within T26 or most TC-L lamp options. enclosed luminaires – and lamp Modern T16 lamps are designed efficiency was improved by for maximum efficiency at high forced ventilation of the fitting, temperature, so to draw chilled for example by the return air air across the lamps is likely to from the air conditioning sys- reduce operating efficiency by tem. However T16 lamps are as much as 25 %. Supply air can designed to operate at higher also be a problem when dischar- temperatures and are therefore ged in close proximity to a T16 most efficient within enclosed luminaire. The diagram above luminaires (see graph above). shows a solution to the return Most importantly, they cannot air path that bypasses the lamp be used in the return air stream compartment altogether. Maxi- AWB_Workplace_Q_Produktb_UK.qxd 02.05.2005 10:42 Uhr Seite 41

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 41

4. Ceilings and their If a designer is faced with such Influence a ceiling grid, our advice is to on Lamp Choice change to 750 mm luminaire size which can either fit into a In an ideal world, lighting which 750 mm square ceiling grid, or incurs an ongoing revenue cost into a 1500 mm square tartan in a building, should dictate the grid ceiling. choice of ceiling. However for good reasons to do with lettable The 750 mm square luminaire space, there is a growing trend uses 600 mm T16 lamps in a for 500 mm as the base building luminaire variant that has extend- module, which gives 1500 mm ed flanges as shown in the pic- multiples for partition choice. ture above.

A 500 mm square luminaire A fully updated matrix of these size is not a good choice with various options is available from respect to lamp choice, because our Technical Department. it narrows the options to TC-L and TC-D lamps which have the Contact us on: relative high brightness and are [email protected] less efficient than current best practice T16 lamps. AWB_Workplace_Q_Produktb_UK.qxd 03.05.2005 11:22 Uhr Seite 42

Further Considerations in Workplace Lighting

2700 K 6500 K

5. Colour in the situation is now more compli- (FFR), such as Zumtobel Staff’s facilities, to help maintain sus- Workplace cated as a result of three main LA TRAVE fitting, are gaining tained alertness. shifts in technology and re- greater acceptability. Here it is The issues of colour and colour search data: possible to use a different • Secondary Lamp Systems temperature in the modern (usually “cooler”) colour tem- The latest version of the workplace are increasingly Firstly, premium offices will perature lamp for the upward acclaimed, and much-copied, important to consider, as the more often than not have a component, and a “warmer” MELLOW LIGHT system – technologies for achieving dimming facility, at least within colour temperature for down- MELLOW LIGHT IV – has the such effects proliferate almost the daylight zone. In the quest ward focal glow (see page 35). potential to incorporate sepa- daily. Below we assess the to match more closely the arti- Thirdly, as explained on page rate colour lamps, which can most common techniques and ficial lighting with daylight 15 there is much evidence be used to create distinct their associated problems and within those zones, there is from the so-called “third eye” areas of colour, in addition to opportunities. now a wider acceptance of research to support the use of white light (above and below). “cooler” colour temperatures. extra high colour temperature These might be used to add • Lamp Colour Temperature Secondly suspended fixtures lamps with a high blue con- coloured highlights within an The issue of lamp colour tem- with variable flux fraction ratio tent, in 24-hour workplace otherwise bland space. perature is a perennial issue in office lighting design. In MELLOW LIGHT IV Balanced bygone days the usual choice Surface-mounted luminaire was a lamp with an “interme- diate” colour temperature of Recessed luminaire around 4,000 K. However, the WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 43

Balanced colour luminaires used in a refectory. Colour changing: morning, noon and night

• Coloured Tints for Mood and • Working with Self-Illuminat- 6. Discomfort Glare used where the “side view”, Identity ing Surfaces (UGR) which is the brightest aspect While intense areas of satu- ACTIVE LIGHT WALL systems of the luminaire, exceeds the rated colour, which can be or internally illuminated screens Within the UK, the concept of recommended glare limit for visually distracting, are not hiding RGB colour changers, glare limits has been around offices of UGR 19. If alternate advisable for office spaces, are the latest methods for since 1961. However during the luminaires are set endwise and Zumtobel Staff does offer an adding colour to vertical sur- era of “low brightness” VDT crosswise, very often the UGR option for coloured additive faces, such as walls. By using louvre products, with very low will be compliant. tints inside some luminaires, RGB colour mixing, a huge UGRs, the subject was very such as MELLOW LIGHT palette of colours can be cre- rarely addressed. Now with the Please contact the Zumtobel and PERLUCE. These can be ated and distributed over even growing prevalence of so-called Staff Technical Office for more used to add visual interest, large surface areas. These can “dual component” fixtures, information. to create distinctive moods range from subtle pastels to glare calculations are again within the space – or to desig- intense, saturated hues. The necessary. nate specific zones or work use of intense coloured effects functions, to aid team cohe- could be most effective in pro- The latest Dialux design soft- sion and/or orientation in large viding focus and impact in ware offers a Glare calculation buildings. meeting spaces, break-out module which is very useful. zones or common parts. Or One aspect of this programme alternatively colour could be is a new ability to calculate used to mimic windows in day- UGRs from an array of counter- light-starved, deep-plan spaces. rotated luminaires. This can be Further Considerations in Workplace Lighting

CO2 EMISSIONS – a comparison

1 quantity 54 W T16 fluorescent lamp – 62.6 kg/annum*

One large office building (1m sq. ft) – 1,000,000 kg/annum*

One 747 return flight London to Singapore – 1,000,000 kg per return flight**

* “Calculated on the projected fuel mix for the grid 1998–2000. Actual figures may vary from the projections, but DEFRA (Department of the Environment, Food and Rural Affairs) plan to use a constant value until 2010.” ** See the UK’s 2002 National Atmospheric Emissions Inventory (NAEI) www.naei.org.uk for long haul flights WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 45

7. Energy Watts per Square Metre per relaxation of 20 % if the lumi- The Kyoto Protocol, which be- 100 lux (W/m2/100 lux) naires are “controlled”. came legally binding in Feb. 2005, The measurement of energy We believe that this slightly aims to curb and reduce the use is a crucial issue in today’s more refined measure would be Kgs of CO2 per Square Metre emission of greenhouse gases, 2 post-Kyoto world. However, the a better yardstick to use, as it Per Year (Kg/CO2/m /Year) particularly CO2, in an attempt to various methods and formulae starts to take into consideration BREEAM has its own measure, control global warming. In

2 for measuring energy use in the efficacy of the luminaire it- Kg/CO2/m /Year, which predicts Europe (inc.the UK) the govern- relation to lighting are both self. Using this measure: true energy use in terms of the ments are taking the expedient confusing and in some cases, production of carbon dioxide option by imposing energy restric-

2 incompatible. In this section we • A figure of 2.5 W/m /100 lux (CO2). There is no direct refe- tions on buildings and a Climate chart the variety of techniques would be good practice for rence to limits on lighting, but Change Levy on businesses, of assessing energy/power uniform lighting. credit points are awarded accord- whilst avoiding the more difficult

2 loading in relation to lighting, • A figure of 2.0 W/m /100 lux ing to a scale of overall CO2 issues of e.g. banning fuel hun- and unravel their advantages for uniform lighting would be production. A mid-range score gry cars, or taxing aviation fuel.

2 and disadvantages. indicative of “high output” T16 would be 60 kg/CO2/m /Year. It lamps used in very efficient is interesting to note that to However important energy Watts per Square Metre (W/m2) luminaires, with a high direct achieve 500 lux at typical spac- issues are, consideration for the Historically, energy use has component. These would ing, a 54 W lamp would gener- employees in the buildings

2 been erroneously measured via actually result in poor visual ate 10.9 kg/CO2/m /Year – in should take precedence. Fortu- installed power loading, calcu- conditions without some sup- the UK a 54 W lamp burning for nately visual quality need not be lated in watts/m2. Unfortunately plementary lighting. 2,500 hours produces around compromised for the sake of

2 this crude method does not • A figure below 2.0 W/m /100 lux 62.6 kg of CO2 (some electricity energy efficiency. account for the efficiency of the would be possible only with is not fossil fuel generated). luminaire or the length of time localised and task lighting – they are switched on. And pre- this combination can easily Global Carbon Imbalance

2 scribed targets vary enormously achieve <1.5 W/m /100 lux. Predicting the Growth of CO2 – e.g. those in the CIBSE/SLL Code for Lighting, for commer- Luminaire Lumens per Circuit cial spaces vary from 7 W/m2 Watt (LL/W) for fluorescent lighting offering Part L2 of the Approved Build- 300 lux at the working plane up ing Regulations (April 2002) to 18 W/m2 for HID lighting sys- pioneered this term – a novel tems producing 500 lux – with concept that does take into many other levels in between. consideration the photometric Perhaps significantly, the BCO efficiency of the luminaire. Fit-out Guide for Cat A schemes However, it does not necessarily indicates a figure almost measure the efficiency of the mid-way between these two luminaire in putting light on the extremes, at 12 W/m2 task – or allow for the maintenance factor. With the advent of lower cost controls and dimming, not to For offices the prescribed limit mention scene-setting and com- is 40 LL/W. In practical terms bination lighting schemes, a this means using a combination more sophisticated approach of lamps in the building that to predicting energy use is have an aggregate efficacy necessary: above 75 lm/W. Part L offers a Further Considerations in Workplace Lighting

This emergency sign may not be positioned most appropriately, but it does Clear, unambiguous signing of the major escape routes is mandatory in any nevertheless provide effective orientation and re-assurance in the event of an working building. emergency. 8. Emergency Lighting this attitude could potentially provided, then the insurance www.zumtobelstaff.com/onlite and Safety Liability threaten the very survival of a company would be well within business. Take the example of a its rights not to settle the claim. Employers are liable for the local area network power failure, safety of their employees. They which is an increasingly com- Newer types of emergency light- are required to carry out regular mon occurrence. If a defective, ing systems have eased the assessments to identify areas of self-contained emergency lumi- burden on the shoulders of dili- risk – and most are required to naire, producing inadequate gent employers. Self-test, or document areas of concern and escape route illumination, was preferably centrally addressable ways of rectifying the problem. responsible for an injury during systems, can radically reduce Part of this Risk Assessment evacuation, litigation could the through life testing costs process covers the suitability result. of emergency luminaires, but and sufficiency of the emergency If the responsible party could this still leaves the maintenance lighting system; it must also show that necessary Risk headache of self-contained specify procedures to ensure Assessments had been con- batteries. Alternative technology continual testing, recording and ducted and that a proper testing solutions, based on decen- maintenance of the system. and maintenance regime was in tralised local battery systems place, then the business could (Low Power Systems or LPS) In the past, perhaps through claim any legal costs on insur- with automatic monitoring and ignorance, emergency lighting ance. However, if an adequate testing, may well begin to re- has often been treated as a “fit- audit trail of assessment, testing place self-contained batteries and-forget” system but today and maintenance could not be as the number one choice. WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 47

These two photos show an office building before and after a mains failure. This demonstrates how, in a genuine emergency, suitable and sufficient escape lighting and signage is critical.

ONLITE Local: • The service life for an indivi- ONLITE Section • Straightforward scalability with Self-contained dual battery is three to four Central: Distributed no need for technical equip- years – shorter with high ceil- Central Battery System ment rooms This emergency lighting solution ing temperatures • The service life of the group from Zumtobel Staff involves little • Functional testing of battery This emergency lighting solution battery is extended, with an installation effort and relies on and emergency fitting using relies on dividing the system into option of five or ten years, due Self Contained energy supply. DALI system. several self-contained circuits. to it being installed outside potentially high temperature Performance Characteristics: Performance Characteristics/ areas. • Recommended for 25 to 50 Requirements: • Functional testing by DALI/ emergency and escape sign • Recommended for 50 to 500 Powerline. luminaires, with a maximum of luminaires 256 luminaires • Stairway function plus night- • Offers a fixed emergency light time and security patrol output switching • Offers individual setting of emergency light output from 5–70 %

Safety Safety Investment costs Investment costs Maintenance costs Maintenance costs Flexibility Flexibility Lighting Techniques – Comparing the Options WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 49

“It is with light that we can 1. Uniform Lighting dimensional visual quality to For these reasons, well-desig- bring soul and spirit back into space. And by reducing overall ned free-standing uplights, with architecture and perhaps find Uniform lighting is the easiest, illuminance levels within the a well-controlled downward task our own soul in the process.” most routine, lighting technique facility, energy and maintenance component, such as FLEXOS, – Arthur Erickson to be applied to the office en- costs can also be reduced too. LANOS or LIGHTFIELDS – or ver- vironment. It is most often pro- sions in which the fitting is fixed duced by lazy contractors or to the edge of the desk or inte- engineers, using basic design 3. Task Localised grated into screens – can pro- software, without ever visiting Lighting vide a much better solution. the space in question. It can be easily created by a regular, Switchable and/or dimmable In addition free-standing uplights repetitive array of ceiling-mount- local task lighting on or at the are now available as standard ed luminaires, most often down- desk is an increasingly popular with SensControl incorporating lights. Such an approach is no option in many offices, as a way a daylight sensor and presence longer prescribed by the regula- of boosting light levels at the detector to ensure ease of oper- tions (see p. 16–23) and neither precise point where higher levels ation, reduced energy consum- is it advisable, creating as it are needed – and giving staff ption, and a “constant” level of does, a very homogenous and some degree of local control in illuminance pre-selected by the visually uninteresting lighting the process. Such lighting can user themselves. scheme, without highlights or be very useful for more elderly any degree of shadow. It is also staff who, research shows, wasteful of energy, as not all require much higher levels of areas within an office need to illuminance than younger staff be lit to the same level. for visual tasks such as reading. Although task lights involve additional capital investment, 2. Task Area Lighting they can reduce energy costs by permitting lower overall lighting Recommended in EN 12464, levels in the task area. However the concept of task area lighting task lighting is sometimes seen is fundamentally in conflict as a stop-gap solution – it with the older uniform lighting should never be supplied as an approach – and offers many alternative to a well-designed advantages over it. TASK AREA office lighting system. lighting allows lighting levels to be higher at the task area (typi- There are a number of down- cally, 500 lux) where visual tasks sides to desk-mounted task are performed, while keeping lights: if incorrectly angled, they light levels lower in the surround- can appear as glare sources to ing spaces (300 lux). Compared neighbouring staff; they take up with a uniform array scheme, considerable desk space; and in such an approach offers the many offices, they can create a freedom to utilise additional significant cable management accent lighting and wall-wash- problem, if added afterwards ers, which can give added visual and powered from wall-mounted interest, by creating a multi- sockets. Lighting Techniques – Comparing the Options

More London Bridge Audit Commission Project: Friarsgate, Solihull; Occupier: Audit Commission; Architect: BGP McConaghy Architects; Lighting Designer: Andrew Wilkes Management; Contractor: Genus; Photo Credit: Martine Hamilton Knight 4. Direct Downlighting supplemented by other light 5. Dual Component louvre. The secondary compo- sources, such as uplighters and Fixtures nent is indirect, via a white, matte In all the research, direct down- wall-washers, which completely reflector or secondary opalised lighting solutions, using ceiling- negates any energy efficiency Pioneered by Zumtobel Staff’s chamber. Some versions are mounted or recessed luminaires, and cost advantages which such MELLOW LIGHT concept, dual mounted flush with the ceiling have been shown to have the a system might have claimed in component luminaires are fast but others protrude below the lowest user acceptance of all less enlightened times. becoming a standard office light- soffit, or are surface-mounted, lighting systems. Used on their ing solution. They have a primary to increase illumination of the own direct downlighters create a Zumtobel Staff research has direct lighting component that ceiling. These luminaires are par- very dark, oppressive visual am- established that downlighters can be created by a perforated ticularly recommended for situa- bience, with brightly lit horizontal with louvres, which were original- basket or Gridmesh, to shield tions where the ceiling is less surfaces and underlit walls and ly intended to prevent glare on and diffuse the lamp – or alter- than 2.6 metres and direct/indi- ceiling – an ambience which has VDT screens, can still create natively there may be an open rect lighting cannot be installed. been dubbed the “dark cave” significant disability glare on key- effect. In fact, downlighting as a boards located below the fit- sole lighting technique cannot tings, which can obscure the even meet the latest LG3 regula- letters/numbers on the keys. tions, which requires a scheme This is a particular problem with to achieve 50 % of task surface black keyboards which are cur- illuminance on the walls and rently very fashionable (beige 30 % on the ceiling. Therefore to and grey is much less suscepti- comply, downlighters must be ble to the problem). WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 51

An exemplary direct/indirect scheme – preferred by users. MPO in action in the form of flush-mounted LIGHTFIELDS luminaires.

6. Direct/Indirect 60 % also allows for flexible 7. Micropyramidal Optic Lighting arrangements of individual work (MPO) Luminaires stations. In earlier chapters we have MPO is a new technology in- summarised extensive research However, against all convention- volving an innovative lens sys- showing that direct/indirect al wisdom, which assumes that tem to obscure the lamp image lighting systems have massive direct/indirect lighting tech- and limit the luminance of the user support, in terms of visual niques are expensive or ineffi- fitting to 1000 cd/m2 at relevant preference. Such systems com- cient, they can actually turn out angles. Because these are en- bine the advantages of direct to be cheaper than downlighting closed T16 luminaires, they are work station lighting and indirect solutions, which now require very efficient – and the concept room illumination. The resultant additional luminaires to conform can be applied to flush-recessed, light distribution creates a pleas- to current codes. One main rea- surface-mounted or suspended ant room atmosphere, noted for son is that direct/indirect fittings luminaires, as in the Zumtobel its vertical illuminance levels, can be located at much wider Staff Lightfields range. The good modelling and efficient spacings than other types of recessed version is very well lighting of the task area. In lighting, while achieving similar suited to low ceiling heights, open-plan offices, generously illuminances. where an open louvre fitting proportioned, bright ceiling would be visually oppressive. areas enhance the feeling of well-being and an indirect light component of greater than

WORKPLACE LIGHTING – APPLICATION AREAS 53

Workplace Lighting – Application Areas

“To shift the paradigm of lighting specification and installation in common practice towards ergonomically designed lighting solutions.”

Mission statement of the Light Right Consortium, USA (2001–2004) Workplace Lighting – Application Area Case Studies WORKPLACE LIGHTING – APPLICATION AREAS 55

“It’s about attracting and retain- This section offers an easy-to- work space in a modern com- ing the best people. We’re in understand, illustrated guide to mercial building. Each photo the war for talent. The building the ideas and lighting solutions has a short detailed commen- inspires – that’s what makes it discussed in the rest of the tary – and where necessary, is special.” brochure, using photos of light- cross-referenced to lighting – Andy Rubin, PENTLAND ing schemes, from exemplary to issues and product information (2003 BCO “Best of the Best” poor, for the major types of in other parts of the brochure. Award winner)

EMI HQ, 27 Wright’s Lane BCO Awards 2004 Refurbished/Recycled – National (and London) Winner

Architect: MoreySmith

WORKPLACE LIGHTING – APPLICATION AREAS 57

Open Plan Offices

The Audit Commission require premium working conditions to recruit the right calibre of personnel. MELLOW LIGHT IV was chosen here as part of an expressive interior design scheme that is contemporary, without being over elaborate. Notice the light and airy appearance achieved without daylight. Colour tints, available as accessories, are used to delineate different depart- ments and circulation areas.

Photo courtesy – Andrew Wilkes Management

This installation at a major Canary Wharf bank is state-of-the-art in energy-saving terms, achieving less than 2 W/m2/100 lux – but that doesn’t guarantee good lighting. The luminaires are a variant of the MIREL fitting with a semi-specular louvre mounted in a “service tile” within a “tartan grid” ceiling, much favoured in the premium office market. The lit effect is typical of offices with deep floor plates, where most staff are distanced from daylight. The characteristic scollops on the walls and shadowing at desk dividers is evident. This photo also shows the dominating vista of the underlit ceiling.

Developer – Argent Estates Ltd. Architect – Lifschutz Davidson Building Services Engineer – Roger Preston Associates

This office with above average floor- to-ceiling heights, is well suited to lighting with the suspended direct/ indirect CLARIS luminaire. The luminaires run perpendicular to the main fenestration and to the central atrium. They are dimmed in response to daylight levels (effect over-ridden for this photo). www.zumtobelstaff.com/claris www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral

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Open Plan Offices

Forbury Square, with lighting design by Roger Preston and Partners, has full height glazing and a central atrium. The potential for energy savings is met by the SYNTO luminaires installed in a regular array. Each luminaire is dimmable and has the ability to pre-set maximum light levels according to the function or decor of the space. From the pre-set value the fixture will dim down to balance with daylight levels – or dim down to zero if triggered by the inbuilt absence sensor.

Lighting design – Roger Preston and Partners

The electric lighting at North Lanark- shire Council’s office is shown with the daylight excluded. The surface-mounted MELLOW LIGHT IV with “gridmesh” diffuser scores very highly in lamp obscuration. However, the ceilings, walls and other vertical surfaces are still well illuminated, despite a very dark carpet.

User and Consultant – North Lanark- shire Council

Offices at Diageo’s world HQ in West London, with lighting design by Indigo Light Planning, has a staggered array of dual component luminaires, equipped with a louvre for the principal downlight element. The space has manual blinds both into the atrium and the exterior and the effect also works well at night. Note the very high reflectivity from the carpet and desks and the small but influential colour accents. www.zumtobelstaff.com/ml

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Open Plan Offices

Developers Peel Holdings built this premium office space in Trafford Park, Manchester. This refurbished office space at Arup Associates has restricted Commendably, the Cat A fit out took a Cat B approach and included MELLOW LIGHT lumi- ceiling height. naires and the blue carpet (but not the blinds). However the very shallow LIGHTFIELDS system can still be used Note the faces of the occupants and the other vertical surfaces are well-illuminated due to successfully. the soft polar curve of the fitting. At first sight there appears to be too much uncontrolled daylight The hue of the carpet and the nightscape of the Trafford Centre through the window is (despite the blinds) – but note how effectively LIGHTFIELDS illu- reflected in the ceiling. minates the internal mullion walls, thereby reducing contrast. The 1000 cd/m2 luminance limit of LIGHTFIELDS suits the older Occupier – Peel Holdings - Speculative Offices type screens in use. Developer – Peel Holdings Architect – Chapman Taylor Architects Manchester Occupier – Arup Associates Building Services Engineer (Electrical Consultant) – WSP Architect & Engineer – Arup Associates Lighting Designer – Zumtobel Staff/WSP Building Services Engineer (Electrical Consultant) – Arup Associ- ates Lighting Designer – Arup Associates

Pentlands European HQ, designed by allied with an unusually high reflect- architects GHM Rock Townsend, was ance floor covering, while the stimul- the BCO Best of Best Award winner ating colour accents on the columns in 2003 and not unnaturally there is a signals the company’s commitment to strongly co-ordinated design influence a strong team culture (MELLOW throughout the building. LIGHT III has since been superceded This is well demonstrated in the open- by the innovative MELLOW LIGHT IV plan offices which are illuminated range). by MELLOW LIGHT III, with its diffuser basket dropped below ceiling level, offering lamp shielding for comfort. www.zumtobelstaff.com/ml There is considerable daylighting www.zumtobelstaff.com/lightfields

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Open Plan Offices

An interesting re-modelling of this space by OMI Architects employs suspended, direct/indirect CLARIS luminaires, despite a fairly low ceiling. The walls appear quite dark due to their distance from the luminaires, but this is strongly mitigated by the system’s high uplight component. This area would have been a visual disaster area if illuminated only by louvred downlights.

Occupier – OMI Architects Architect – OMI Architects

This very successful combination lighting scheme by Atco Consultants, uses both suspended and wall- mounted versions of the OREA direct/indirect luminaire. The fittings are equipped with SLC (side light coupler) Waveguide optics to reduce the luminance levels of the fittings above 65°. The end result makes for a very successful, visually comfortable workspace, despite the lack of daylight.

An interesting ceiling design and associated lighting solution at Lincoln Uni- versity. The continuous runs of CLARIS direct/ indirect luminaires are suspended hori- zontally from a sloping ceiling which breaks out into a skylight. The overall effect is very pleasing despite the close offset “hot spot” on the ceiling at its lowest point. www.zumtobelstaff.com/claris www.zumtobelstaff.com/waveguide

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Open Plan Offices

This minimally styled CAD-intensive designers’ studio, at Arup Associates, has been appropriately fitted out with long, continuous runs of the OREA direct/indirect luminaires. The fittings express excellent design synergy with the interior architecture, echoing the square columns and dropped, linear ceiling section. The light distribution on the ceiling has good diffusion, with a gradual change of luminance, to avoid disrupting the visual calm of the space.

Buro Happold’s own offices exhibit considerable design ingenuity and make use of the ultimate office luminaire on the market – AERO with an Eldacon Waveguide® panel, which works to distribute the lamp image, in order to minimise glare. As a result the interior is bright, airy and visually stimulating, despite the dark floor.

User and Consultant – Buro Happold

It is rare to find any single project in which a wide range of lighting design approaches can be used. Here is the office mezzanine floor, with a central atrium, at Buro Happold’s offices, which is treated in a very interesting manner. While extensive daylighting is central to the scheme, here it is supplemented, unusually, by COPA high-bay fittings suspended above the double-height zone.

User and Consultant – Buro Happold

This high-ceilinged space with plenty However, over extensive periods of daylight, at Imperial College, of work, these dark dividers could London, is equipped with suspended cause eye strain, due to the constant SPHEROS direct/indirect luminaires. adaptation the eye will have to make between task and background. Even at night these accentuate the spaciousness of this office, despite Royal School of Mines, Imperial College www.zumtobelstaff.com/spheros low floor reflectance and extremely Architect: Sheppard Robson www.zumtobelstaff.com/copa dark overdesk storage dividers. Consultant: Norman Disney Young www.zumtobelstaff.com/waveguide

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Open Plan Offices

Faces, walls, ceilings, columns are all well lit – the Not a Premium Grade specification for an office but it certainly looks it. The MELLOW LIGHT IV Q luminaire key to successful office lighting. works so well in its empathy with daylight, putting light on the walls, columns, and ceiling: Brightness Management at its best. Interestingly there is a beige keyboard which is hugely better than black, for veiling reflections, yet the telecom cradle is not only black and has an LCD display, but it is near optimal in angle for offending veiling reflections from the overhead lighting. Fortunately MELLOW LIGHT IV Gridmesh greatly mitigates this likely problem.

This company (SSL International) clearly has comfort in the workplace high on the agenda as demonstrated by the chair and MELLOW LIGHT IV installed as base-build in this Pre- mium Development.

Unusually, using laptops with their own LCD screens, which have lower luminance levels than most stand alone screens, would mean preference for lower illuminance to compensate. The LCD telecom cradle at near vertical inclination would have had much complaint from overhead open louvres, as would the black keyboards. MELLOW LIGHT IV Gridmesh solves these problems. www.zumtobelstaff.com/ml

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Cellular Offices

This meeting room is lit with suspended AERO luminaires offering good illumination of the main interior surfaces. However, one interesting feature is the glazed partitioning, where the middle section provides both a degree of privacy and also a surface to provide important vertical luminance.

The legal profession has a high demand for private offices, of which this scheme at Slaughter & May, is typical. Here the staggered lighting array works in favour of Note the semi-translucent blind quite commonly It is located on an atrium perimeter illuminating the right wall. used to mitigate sky glare whilst maintaining a view wall with glazed partition to the corri- The unseen left wall is only lit by one luminaire. to the exterior. dor. The shadows in this view show the strong Used at night the blind kills the harshness of the Despite the flush-mounted MELLOW directionality of the downlighting. oppressive dark glazing but it contributes little to LIGHT luminaires, there is plenty of The photo also demonstrates that ceiling illumin- the brightness within the room. light on the crucial wall, facing the ance in small rooms is important – the walls facing However had the blind been white, it would not user’s desk position. the user are, however, crucial. have afforded a view. Due to the diffuse nature of the illu- The best kind of blind to use might have been mination, there are no harsh shadows light-coloured and perforated. on the desk from the overhead storage shelves.

Developer – Helical Bar Architect – Sheppard Robson www.zumtobelstaff.com/ml www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/miral

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Cellular Offices

This glazed office again provides some view to the outside – and the free-standing LIGHTFIELDS combines good ceiling lighting with a degree of lighting to the task. Fitted with an occupancy detector, it switches off automatically when the space is empty.

The apparent width of this narrow cellular office is increased by using MELLOW LIGHT luminaires surface- mounted crossways. The good lighting of ceiling and wall surfaces increases the apparent room size and blends well with daylight. Note the external blinds which are popular in continental Europe.

Driven by BREEAM, the BCO and others, the quest to provide a view to the exterior has led to an enormous amount of glazing in contemporary cellular offices, in order to make them transparent. However, as can be seen at Pentland’s HQ, there are still some solid vertical surfaces which should be well lit. The MELLOW LIGHT fittings achieve this task well. www.zumtobelstaff.com/ml www.zumtobelstaff.com/lightfields

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Dealer Rooms

This view of Lehman Brothers’ dealing rooms show the extraordinary density of screens – both desk- mounted monitors and large suspended data screens. The quality of lighting in such a space is critical.

Architects – Cesar Pelli & Assoc., Swanke Hayden Connell Consultant – Hilson Moran Partner- ship

Lehman Brothers’ dealer rooms at Canary Wharf, London use the ultimate optic for a dealer room – the AERO luminaire with Eldacon® Waveguide panel, mounted in continuous rows up to 70 metres long. There is little daylight penetration into this space Again, this space at the Bank of Nova Scotia The ceiling brightness is kept suffic- at the Bank of Nova Scotia, yet the MELLOW shows effective lighting of all the main interior sur- iently high throughout this deep-plan LIGHT luminaires do a good job of lighting the faces, including the light-coloured blind. area and the column heads are also internal surfaces. In this night time shot, the blind becomes another well lit. However, note the potentially distracting luminaire bright vertical surface, rather than a black hole The AERO luminaires are controlled by image reflected in the specular metal ceiling – a created by an unshielded window. the main LUXMATE building lighting good example of how the lighting and interior de- Note the brightness-robbing effect of the extensive control system, which allows the whole sign might have been better integrated. black IT hardware. floor to be pre-set to a chosen light level. They can be daylight-linked, if necessary. www.zumtobelstaff.com/ml www.zumtobelstaff.com/waveguide

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Dealer Rooms

This mid-‘90s dealer room at Barings ING shows the now obsolete ID-VM luminaire, This novel approach to lighting a dealing space at which was by far the most advanced office lighting system of its type. UBS Warburg works admirably, with all the surfaces The conventional way to light these spaces at the time was with “dark light” down- well lit, including the upper walls. lighters, due to the industry’s obsession with preventing reflections in display screens. This was achieved using the QUARTOS square down- This highly successful installation proved that excellent lighting for VDTs need not lighter luminaire with a suspended circular deflector result in “cave-like” environments. to divert a proportion of light output back up into the coffer. The energy penalty was negligible when compared to the user benefits.

This office at Reuters is not a dealer room but its intensive high-tech nature presents many of the same issues. The lighting is provided by MELLOW LIGHT III luminaires with a dropped diffuser basket and despite the blinds being closed, this intrinsically dark space, with even darker IT hardware, looks bright, spacious and comfortable. Note particularly the well-lit far walls and ceiling.

Lighting design: PME www.zumtobelstaff.com/ml Architect & Building Services: BDP, Manchester Lighting Design: BDP & Zumtobel Lighting WORKPLACE LIGHTING – APPLICATION AREAS 77

Control Rooms

The layout of suspended luminaires in this building services control room at Heathrow Airport reflects its name – the Star Centre. The ceiling layout means that the spacing between luminaires varies enormously, yet there is no hint of this in the lit effect due to the soft- edged light distribution.

This highly unusual space, with sloping windows and exposed services, has been equipped with suspended direct/Indirect CLARIS luminaires. These illuminate all the surfaces, which is essential in a space that could so easily have become cold and grey.

The NATS Air Traffic Control Centre near Southampton is perhaps the most critical visual environment imag- inable – lives could be at risk if the screens are not fully visible. The custom-designed direct/indirect lighting system demonstrates the type of lighting chosen by a team of designers to create an ideal visual environment without any compro- mises. www.zumtobelstaff.com/claris

WORKPLACE LIGHTING – APPLICATION AREAS 79

Control Rooms

This space has a low ceiling height and is lit entirely with circular downlights, with predictable results. However, an otherwise dark ceiling takes on some brightness, due to the reflected image of the large data screen on the metal ceiling, and the light coloured desking.

This shipping control centre at Harwich equipped The artificial lighting in this space is not clearly evi- The lighting at this installation is de- with Category downlights-exhibits high horizontal dent – however without careful design and effective signed to create good illumination to illuminance and strong shadowing. window blinds, there could be occasions when the the work surface, using suspended In this instance a 24-hour view out of the windows multi-panelled displays positioned against the win- RTX louvres, while avoiding spill light was essential, which precluded direct/indirect lu- dows will be impossible to read. onto the wall-mounted display minaires and all-round interior brightness (the screens. LUXMATE dimming-system allowed dimming down The hidden cove lighting, which sur- to 3 % in order to mitigate against disabling reflec- rounds the display screen panel, tions off the glass at night). creates good background illuminance while leaving the screen surrounds relatively dark. www.zumtobelstaff.com/rtx2 www.zumtobelstaff.com/panos www.zumtobelstaff.com/emotion

WORKPLACE LIGHTING – APPLICATION AREAS 81

Call Centres

This call centre at Careers, Scotland, benefits enormously from intense coloured highlights and the use of suspended OREA luminaires, which offer good illuminance on all the main room surfaces.

Consultants – DMP Consulting

Wessex Water (left and above), designed by Bennetts Associates, won the highest BREEAM accolade of “Excellent”. Seen at dusk, the interior lighting comprises a series of special CLARIS direct/indirect luminaires, designed to fit into the structural linear coffer. As there is no ceiling to baffle the sound, the luminaire has perforated wings which are filled with acoustic dampening material. Also included are presence detectors and call indicators. www.zumtobelstaff.com/claris www.zumtobelstaff.com/waveguide

WORKPLACE LIGHTING – APPLICATION AREAS 83

Call Centres

This installation at London Bridge has interesting scalloping in the recess, additional wall washing and very light coloured surfaces. In combination these features save what could easily have become an oppressive space, particularly with the lack of any daylight.

This large call centre for MISCO pre- sented a range of challenges for the lighting designer but the end result is quite superb. MIROS (free-standing uplights and) spotlights mounted at an accessible height, direct light at the suspended mirrors. The resultant re-directed light enters the central area when daylight is insufficient. The perimeter workstations are well lit by indirect/direct LA TRAVE luminaires to emulate the daylit areas.

Consultants – Rolton Services

This Category louvre installation des- perately needs some auxiliary lighting, to mitigate the bright desk surfaces lit to over 600 lux – note the dark vertical surfaces in the foreground. The narrow window mullions are un- evenly illuminated and the planting This space at the Orange call centre could also have benefited from de- would have been unbearably gloomy dicated accent lighting. if fitted out with louvred downlights. The black and orange house colours used in the interior design come out quite well from the column-mounted uplights and the recessed MELLOW LIGHT IV gridmesh luminaires. The latter include an orange filter within the left/right secondary light chamber to emphasise the circulation areas. www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral www.zumtobelstaff.com/panos www.zumtobelstaff.com/spheros

WORKPLACE LIGHTING – APPLICATION AREAS 85

Communication Areas/Meeting Rooms

In this space at the RIBA building in London designed by Visual Energy, suspended direct/indirect AERO luminaires, combined with surface mounted LIGHTFIELDS in the lower ceiling areas, create a light, airy and cheerful character to facilitate open discussion and exchange of ideas.

TIF-Daten von Martin bearbeiten lassen

This diverse, multi-functional meeting space at Rolls Royce has dramatic visual appeal, with its combination of ambient and accent light sources. However, the lighting was designed for circular meeting tables, which was subsequently changed, which highlights the need for good co-ordination between the lighting designer and interior designer.

Feindaten sind o.k.

Here a combination of softer direct/ indirect lighting and directional downlighting creates a space with good task lighting features, while retaining an element of drama. This is a good example of how the lighting in a multi-use space for face-to-face meetings, projections, presentations and so on, can be modified to suit all needs.

This adventurous Danish meeting room cantilevered over the atrium benefits from huge amounts of daylight – but is not recommended for those suffering from vertigo. Feindaten sind o.k. www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/lighttools www.zumtobelstaff.com/lightfields

WORKPLACE LIGHTING – APPLICATION AREAS 87

Communication Areas/Meeting Rooms

This meeting room is treated with a simple, suspended AERO solution, which balances well with the daylight flooding in from the left.

This meeting and training space with central room divider, requires maximum flexibility. The suspended CLARIS fittings offer nicely balanced illumination of the main room surfaces – and are arranged to work equally well when the room is split into two.

A multi-media room that would be excellent for video-conferencing, offering, as it does, good facial modelling of the people around the table, through the use of OREA suspended luminaires. Note too the blinds for daylight ex- clusion and privacy. This feels like the sort of space where important decisions are made. Clusters of LIGHTFIELDS luminaires, ceiling recessed downlights, sill-recessed uplights and integrated blinds (both to the internal and external spaces), all contribute to the creative corporate ambience. www.zumtobelstaff.com/lightfields www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/claris

WORKPLACE LIGHTING – APPLICATION AREAS 89

Break Out Zones

Three views of different break-out zones in the same offices belonging to McCann Ericksson. An almost identical lighting concept has been used in each space, but the designer’s careful selection of furnishings has created spaces ranging from relaxed to funky.

Occupier – McCann Ericksson Architect – Bowker Sadler Partnership Building Services Engineer – Hoare Lea Associates Lighting Designer – Bowker Sadler Partnership

A classy break-out zone at Slaughter & May. One of many situated right at the heart of the building, they signal their presence by the use of strong primary colours and clean, bright lighting. www.zumtobelstaff.com/panos www.zumtobelstaff.com/waveguide

WORKPLACE LIGHTING – APPLICATION AREAS 91

Break Out Zones

Perhaps more of a tran- sient service facility than a break-out zone, this space uses identical lighting to the offices.

This “break-out” zone at Orange is situated on the This media suite at Diageo has been given an periphery of an open-plan space, next to a photo- unconventional high-tech lighting scheme used to copier, and has identical lighting to the rest of the reflect and underline its futuristic function and This break-out zone at the Audit space. image. Commission is situated in the middle It is debatable whether brightly coloured chairs and of the work zone but is visually demar- a colourful, curved partition would be sufficient to cated from it by the careful use of allow workers to distance themselves, even for a screening, furnishings, colour and few minutes, from routine tasks. lighting. Differentiated lighting could have made all the difference. www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral www.zumtobelstaff.com/miros

WORKPLACE LIGHTING – APPLICATION AREAS 93

Storage

These functional file storage systems have been equipped with a simple and logical lighting solution – a line of cantilevered fluorescent wall-washers which wash light down the vertical stacks offering maximum visibility.

This basement library area, deprived of light, has been equipped Sadly, this kind of installation is all too frequent. with LIGHTFIELDS for maximum brightness and good vertical Some of these storage cabinets must be almost illuminance. unusable due to the poorly positioned and wholly inappropriate lighting.

Effective lighting of office storage involves lighting the verticals and the best solutions provide high levels of uniform lighting from top to bottom. This example from retail, where lighting quality has a direct bearing on commercial success, shows highly uniform (VPI 1) wall-washing onto merchandise and perhaps shows how designers of office spaces could learn from their retail counterparts. www.zumtobelstaff.com/miral www.zumtobelstaff.com/lightfields

WORKPLACE LIGHTING – APPLICATION AREAS 95

Common Parts Stairs/Lift Lobbies/Atria/Entrance

Entrance lobbies can This plain, simple stair- play several roles – in well could so easily addition to projecting have attracted a run-of- the corporate image, the-mill utility lighting they may also have scheme. Instead, the more functional uses, lighting design, even in such as security, so in this back-of-office area, addition to decorative helps to differentiate lighting, effective task this workplace from lighting may also be others. important.

Large reception and entrance spaces such as this succeed with the clever use of different materials, and a wide variety of luminaire types and lighting techniques. The primary, secondary, and tertiary areas of importance are all instantly obvious in this space. As is the pro- jection of the corporate image.

Client – British Land Architect and Building Services – Arup Associates

The atrium is a favoured way of bringing light into the centre of a building, but it can also make a strong corporate statement by displaying the company’s offices and meeting rooms to the visitor in a dramatic way. Good office and meeting room lighting can make a major contribution to creating a favourable impression. www.zumtobelstaff.com/ml www.zumtobelstaff.com/slotlight www.zumtobelstaff.com/panos Sophos, Abingdon Architect: Bennetts Associates WORKPLACE LIGHTING – APPLICATION AREAS 97

Common Parts Stairs/Lift/Lobbies/Atria/Entrance

These two variations on the central atrium/circulation space both require well-designed artificial lighting. The minimal space on the left has a series of shadowed overhangs, particularly on the ground floor, which demand good auxiliary lighting to balance with the daylight; the example below, at Pentland’s HQ, incorporates large projectors within the central space, to stand in for daylight after dark – plus good soffit-mounted illumination of the perimeter walk- ways at each level. Each floor represents a different Pentland brand and a lot of effort has gone into the interior and lighting design to differentiate them.

www.zumtobelstaff.com/spheros www.zumtobelstaff.com/miros www.zumtobelstaff.com/copa www.zumtobelstaff.com/panos www.zumtobelstaff.com/ml “Glare is not an unavoid- able curse in lighting: it is merely a side effect of incompetence.”

Jules Horton Lighting the Inner Spaces WORKPLACE LIGHTING – LIGHTING DESIGN 99

Workplace lighting – Products and Resources

This final section of the brochure offers a concise survey of the main products in the Zumtobel Staff portfolio that could be used (either singly or in combination) for achieving the optimum lighting results discussed in Sections 1, 2 and 3. In addition we offer information on our various support services, including technical backup and lighting calculation and visualisation packages, as well as supplying a number of useful addresses and references that the reader may want to follow up. Direct-Indirect Lighting Systems AERO/OREA

“Best Practice in Dealer Room and Office Lighting”

AERO Eldacon® double waveguide Options

Softline

Geometric • Single or double Waveguide * ELDACON® is a registered trademark of Siteco • SLC alternative Waveguide Beleuchtungstechnik GmbH. • Cord or pendant suspension • Titanium colour • Continuous-row option • Transparent cable feed • Dimmable DALI

Distributed lamp image via microprisms.

Typical Cat. no: 40 968 437 USN-ID 2/54 W*

AERO computer work-stations, lap- tions on screens and displays, tops and notebooks, irrespec- which permits unrestricted Designed by leading Italian de- tive of the angle of the screen. arrangements of lighting units signers, Sottsass Associati, the within the space. AERO lumi- suspended AERO direct/indirect Waveguide involves no conven- naires come in two designs – lighting system embodies a new tional reflectors or louvres but the Softline version, with round- interpretation of lightness and its innovative micro-prism ma- ed details, and the hard-edged elegance in its impressively terial totally obscures the bright Geometric version – each of shallow form, while combining lamp image while transmitting which is available with single or the latest light control techno- the light with an efficiency of double Waveguide panels and a logy, the Eldacon® Waveguide 70 %. AERO puts 76 % up- range of lamp wattages. system. wards onto the ceiling in a broad distribution pattern, to Design: Sottsass Associati The patented micro-prism ensure uniform illumination of structure gathers the light from the ceiling, with a low-glare its T16 lamps and spreads direct component of 24 %. and directs it downwards in a low-glare, batwing pattern The main advantage of the (<1000 cd/m2 at 65°) creating AERO system is that the lumi- comfortable, high efficiency naires can be viewed from any lighting which is perfect for angle, with no distracting reflec-

* For further details: www.zumtobelstaff.com/waveguide WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 101

“The flying wings bring visual lightness to the space”

OREA SLC® waveguide Options • Cord or pendant suspension • Continuous-row option • Circular version • Wall mounted version • Dimmable DALI

* SLC® is a registered trademark of Zumtobel Staff GmbH.

Typical Cat. no: 40 962 222 GZ-ID 2/54 W*

OREA work-stations, laptops and notebooks, irrespective of the OREA offers a further variation angle of the screen. on the suspended direct/indirect lighting system, using the SLC® OREA puts the largest compo- Waveguide system in an elegant nent of its output onto the ensemble. The luminaire uses ceiling in a broad distribution twin T16 lamps housed in the pattern, to ensure uniform illumi- central body – the light from nation of the ceiling, with a low- these is diffused out along two glare direct component of 24 %. tapered outer wings made from The main advantage of OREA SLC® Waveguide, a patented is that the luminaires can be linear, micro-prismatic material. viewed from any angle, with no distracting reflections on screens The innovative SLC Waveguide and displays, which means it material totally obscures the permits unrestricted arrange- bright lamp image while trans- ments of lighting units within mitting the light with an efficien- the space. cy of 70 % creating comfortable, high efficiency lighting Design: Bea Frois which is perfect for computer Direct-Indirect Task Area Luminaires FREELINE MP-ID Micro-pyramidal optic/C-I/ID Matt Bivergent® Louvre

“A new genre of direct/indirect”

FREELINE MP-ID Optic Options • Task MPO Optics at ends also have uplight • Dimmable DALI • Dimming on Demand

Typical Cat. no: 42 159 244 FREELINE MP-ID 2 x 1/49 W ASQ500*

FREELINE MP-ID away from uniform arrays to the ideals of localised Task Area FREELINE is a new genre of lighting where energy loadings linear suspended direct/indirect can be halved as will be the luminaire that is a restrained demands of the European design to be perceived as part Energy Performance of Build- of the architecture with empathy ings Directive. to elements of an interior such as partitions and furniture. Design: Ingenhoven & Partners

FREELINE MPO is a tandem length elegant luminaire with minimalist features and contin- ious downlight via an MPO micro-pyramidal optic having < 1000 cd/m2 brightness and generous uplight.

FREELINE is suited to average ceiling heights and is suited to lighting concepts that can move

* For further details: www.zumtobelstaff.com/freeline WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 103

“Louvres without the headache”

FREELINE C-I/D Louvre Options • Task Louvres at ends also have uplight • Dimmable DALI • Dimming on Demand

Typical Cat. no: 42 159 236 FREELINE C-I/D 1/80 W + 2 x 2/24 W*

FREELINE C-I/D 1/54 W, 1/80 W, 2/54 W Uplight

FREELINE Matt Bivergent Louvre option is a sister product to the FREELINE MPO, that is opti- Louvre Louvre C-I/D Louvre mised to Task Area Lighting.

The central compartment 2/24 W 2/24 W downlight downlight houses an uplight only section whereas the ends contain the task area direct downlight louvre section. When mounted over a task

area, the direct lighting thus 1/54 W, 1/80 W, 2/54 W Uplight Uplight also from comes from the side to the task, Task Louvres avoiding veiling reflections.

The Comfort Bivergent louvres Louvre Louvre render extremely low brightness C-I/ID Louvre < 200 cd/m2. 2/24 W 2/24 W downlight downlight

task area

Sideways light reduces veiling reflections Direct-Indirect Lighting Systems LIGHT FIELDS/SPHEROS

“The prismatic is dead, long live MPO technology”

LIGHT FIELDS A-ID, indirect/direct Options • 300 or 600 widths • Configurable into clusters • Surface, recessed, suspended and freestanding option

Diffuser layer Light directing layer with micro-pyramidal structure

Supporting layer

Typical Cat. no: 42 157 193 LIGHT FIELDS A-ID 2/54 W*

LIGHT FIELDS Both the form and function of LIGHT FIELDS not only ensures the light, and not the lamp – LIGHT FIELDS is generated by unusually brilliant lighting quality, even with surface-mounted and LIGHT FIELDS is a totally unique the innovative micro-pyramidal it also reduces direct and reflect- recessed versions offering pure- lighting system that can be optic (MPO), a further refinement ed glare to a minimum in con- ly direct light distribution. Des- used in a number of ways: as a of Zumtobel Staff’s Waveguide formity with the latest EN 12464 pite their high light output ratio direct, surface-mounted light technology which has revolu- recommendations. Annoying of 72 % (surface-mounted and source; in a suspended direct/ tionised office lighting. MPO reflections on computer screens recessed versions) and 86 % indirect configuration; as a free- technology takes the system and displays have become a (pendant version), the luminance standing unit; or in clusters one step further by reducing the thing of the past – even on at radiation angles above 65° which mimic the appearance of luminance levels of not only pen- notebook screens, regardless remains less than 1000 cd/m2. a large skylight. dant luminaires, but also surface- of their angle of inclination. mounted and recessed lumi- Design: Sottsass Associati In whatever configuration, the naires, to guarantee glare-free MPO technology ensures that LIGHT FIELDS luminaire has a lighting for VDU work-stations. from all angles one sees only restrained, unobtrusive appearance, with its simple, slim con- tours, strict geometrical form and highly refined materials. LIGHT FIELDS does not domi- nate the architecture of the space, but fits in discreetly.

* For further details: www.zumtobelstaff.com/lightfields WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 105

“Slim and minimalist with universal appeal”

SPHEROS C-ID 2/28 W T16 suspended, semi matt louvre Options • 1200/1500/2400/3000 lengths • Different louvre options • Surface mounting, continuous-row and pendant rod

versions • Colour strips available • Dimmable DALI

BIVERGENZ®plus Louvre technology

The new generation of louvres, developed in the Research and Development labora-

tories of Zumtobel Staff, optimises the 1000 max. interaction between two unique technical developments. It combines the patented BIVERGENZ®technology and the innovative 220 Unique®slats.

Typical Cat. no: 42 154 954 SPHEROS C-ID 2/28 W T16 LDE TI ASQ1000*

SPHEROS T16 of the reasons why SPHEROS C-ID T16 has consistently remained popular amongst specifiers. The classic SPHEROS shape has now become a much imita- Design: Hartmut S. Engel ted lighting design icon, with surface mounted, suspended, individual or continuous versions of SPHEROS all available. There is even complementary wall mounting and free standing versions available to complete the family. This enables a constant design theme across the workplace.

The wide range of optics all available with or without an indirect component can cater for any aesthetic and technical requirements and is perhaps one

* For further details: www.zumtobelstaff.com/spheros Direct-Indirect Task Area Luminaires TECTON Mellow Light and TECTON Louvre

“Ultimate Sustainability from Reconfigurability”

TECTON Mellow Light Options • Extensive TECTON System Range • See TECTON Brochure for more details

Typical Cat. no: 22 160 106 TECTON-D ML 28/54 W* Specify also appropriate batten and accessories. TECTON Mellow Light Range. The design execution in detail is exquisite and the lit The TECTON Range straddles effect is even better. a wide application range from industrial through commercial Design: Nicholas Grimshaw & to retail and architectural. Partners

TECTON features a continuous bus bar trunking to which various attachments can be clip-fitted.

Key to the TECTON range is choice of luminaire type, ease of installation, and ease of re-con- figuring which renders ultimate flexibility for office churn.

TECTON Mellow Light brings all the attributes of MELLOW LIGHT IV to the TECTON

* For further details: www.zumtobelstaff.com/tecton WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 107

“Louvres with Flexibility”

TECTON Louvre Options • Extensive TECTON System Range • See TECTON Brochure for more details

Typical Cat. no: 22 157 522 TECTON-D ID 28/54 W* Specify also appropriate batten and accessories. TECTON Louvre attractive contemporary designs for the more domestic atmos- TECTON Louvre is a functional phere needed in Break Out Workplace lighting luminaire with Zones, Restaurants etc. within direct-indirect distribution. The the Workplace. louvre is a darklight with narrow lamellae made from injection moulded polycarbonate. The luminaire is thus suited to localised lighting to task areas, but combined with the TECTON trunking, the whole system renders extraordinary flexibility to churn in Workplace space planning.

Moreover there are other luminaires in the TECTON Range besides the Mellowlight, including TECTON Dekoroptik and TECTON Pool-light, which are Direct-Indirect Lighting Systems CLARIS II/VOLARIS

“Clear, unobtrusive, geometric, symmetric”

CLARIS II MC-ID cord supension, titanium Options • Cord or pendant suspension • Comfort or darklight louvre • Dealer Room refractor for louvres • Opal Diffuser • Single and Twin lamp • Double length luminaires • Matching surface luminaires • Dimmable DALI

The 3D model of the cell louvre shows the groove- shaped design which provides for optimum light distribution.

Typical Cat. no: 42 158 653 CLARIS II MC-ID 1/54 W*

CLARIS II/VOLARIS Both luminaire ranges use the CLARIS II and VOLARIS come in designed for the UK market, latest cell louvre technology four main variants: which has a particular lamp The CLARIS II and VOLARIS which set new standards for position that allows a prismatic surface-mounted, wall-mounted this type of luminaire. For the • Darklight Specular Louvre refractor to be added between or pendant luminaires represent first time in linear fluorescent version, for particularly onerous the lamp and louvre. This miti- the latest step in a long line of systems, the louvre has been VDT applications; gates the lamp brightness, successful louvre-based lumi- manufactured from injection- which may otherwise cause naires for a wide range of work- moulded materials, offering the • Matt Comfort Louvre version, problems on dealer screens or place lighting applications. homogeneous 360° Bivergenz® with its innovative micro-tex- other LCD desk-based equip- CLARIS II has an independent, optic design. This means that in tured embossed finish, which ment. clear and unobtrusive appear- terms of light distribution and gives a high diffusivity to the ance, with its geometric, sym- lighting effect, CLARIS II and louvre surface, offering a very • Opal Diffuser model, de- metric lines. VOLARIS offers the VOLARIS out-class luminaires soft image of the lamp, even at veloped for situations where the same lighting features as its with larger louvres. They both high viewing angles. Despite the designer wants the lighting to “sister” model, but its curva- offer efficient, all-round glare matt finish, the product meets be minimalist yet conspicuous. ceous, flowing shapes and soft, control, making undesired the 1000 cd/m2 limit at 65º and The Opal Diffuser completely gently rounded appearance reflections on screens and dis- is the preferred choice for gen- diffuses the view of the lamp, offers an alternative architectural plays a thing of the past and eral VDT office lighting. yet the lit appearance remains aesthetic. allowing maximum flexibility in crisp and even. luminaire configuration. • Matt Comfort Louvre with Dealer Room refractor, specially Design: A•G Licht Bonn

* For further details: www.zumtobelstaff.com/claris2 WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 109

“A softening of lines”

VOLARIS MC-ID cord supension, anodised Options • Cord or pendant suspension • Comfort or darklight louvre • Dealer Room refractor for louvres • Opal Diffuser • Single and Twin lamp • Double length luminaires • Matching surface luminaires • Dimmable DALI

Typical Cat. no: 42 156 237 VOLARIS MC-ID 1/54 W*

CLARIS II

VOLARIS

* For further details: www.zumtobelstaff.com/volaris Dual Component Lighting Systems MELLOW LIGHT IV Grid-mesh

“A Piece of sky”

MELLOW LIGHT IV recessed, grid-mesh controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to 1 diffuser wings 3 2 4 2 TRANSLUCENT OPAL DIFFUSER 5 WINGS utilising variable refractive index plastic for high efficiency 4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp 3 TONAL COLOUR STRIPS operation, and to improve provide differential colour tone maintenance factor between primary optic and secondary chamber 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 224 ML4 B EB 2/24 W T16 M600*

MELLOW LIGHT IV With it’s rounded polar curve grid-mesh diffuses the lamp, yet Grid-mesh showing slow rate of change integrates with the secondary of intensity, MELLOW LIGHT IV chambers to bring about an The MELLOW LIGHT system, epitomises good office lighting. attractive luminaire whether it is now in it’s fourth refinement, The often conflicting needs of switched on or off. has set the benchmark for sur- architectural quality, visual com- face mounted and recessed fort, daylight integration and Design: Studio & Partners office lighting for more than a control of screen reflections can decade. The key aspect of its all be reconciled through the design is that thanks to the unique qualities of MELLOW unique all-round glare control of LIGHT IV. For example, the main the grid-mesh diffuser, you see visual surfaces, such as faces, the light but not the lamp, at all walls and furniture are better lit angles of view. The usual glare by MELLOW LIGHT than by and distraction associated with conventional louvre fittings so overhead lighting are eliminated, that the overall impression of while the subtly varied appear- interior brightness is enhanced, ance of the luminaire from without added energy consump- different directions adds visual tion. The grid-mesh diffuser sets interest. a new trend for style that leaves behind perforated diffusers. The

* For further details: www.zumtobelstaff.com/ml WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 111

“Tames even the brightest lightsources”

MELLOW LIGHT IV recessed, grid-mesh controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to 1 diffuser wings 3 2 4 2 TRANSLUCENT OPAL DIFFUSER 5 WINGS utilising variable refractive index plastic for high efficiency 4 PRIMARY COMPARTMENT enclosed for optimal TC-L lamp 3 TONAL COLOUR STRIPS operation, and to improve provide differential colour tone maintenance factor between primary optic and secondary chamber 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: ML4 B EB 1/80 W TC-L M625* This is a project specific solution. Alternative luminaire dimensions (e.g. MELLOW LIGHT IV and its even, omni-directional 600 or 750 mm) are available. Please contact your local Zumtobel Staff representative. Grid-mesh light output allows arrays to be under or over spaced, without The novel feature of the latest adverse effects on uniformity. MELLOW LIGHT model, desig- Due to the higher lamp output ned by Studio & Partners, is the of versions using the TC-L lamp, primary light chamber so that they consequently have higher

the fitting is enclosed, to stabi- brightness’s (see published Lmax lise the lamp operating tempera- values). ture, coupled with the secondary light chamber concept, which gives visual depth to the luminaire. A degree of direct lighting is available from the primary chamber, using a variety of de- vices, including grid-mesh and SYNTO louvre. One of the most useful characteristics of MELLOW LIGHT IV is its flexibility – luminaires can be arranged wherever you like in the room – Dual Component Lighting Systems MELLOW LIGHT IV SYNTO Louvre

“High levels of efficiency and comfort”

MELLOW LIGHT IV recessed, SYNTO louvre controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

Typical Cat. no: 42 106 232 ML4 B EC 2/24 W T16 M600*

MELLOW LIGHT IV Design: Studio & Partners SYNTO

The MELLOW LIGHT SYNTO is ideal for situations where a designer may wish to have more “focal glow” on the desk.

The SYNTO louvre option of MELLOW LIGHT IV offers a higher direct ratio onto the working plane.

The louvre and grid-mesh optics are interchangeable so can be used in combination to add even greater flexibility and diversity to an installation. The shielding angle from the louvre gives conventional glare control. This also provides higher operating efficiency.

* For further details: www.zumtobelstaff.com/ml WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 113

“Optimised to get the best from TC-L lamps”

MELLOW LIGHT IV recessed, SYNTO louvre controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to 1 diffuser wings 3 2 4 2 TRANSLUCENT OPAL DIFFUSER 5 WINGS utilising variable refractive index plastic for high efficiency 4 PRIMARY COMPARTMENT enclosed for optimal TC-L lamp 3 TONAL COLOUR STRIPS operation, and to improve provide differential colour tone maintenance factor between primary optic and secondary chamber 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: ML4 B EC 1/80 W TC-L M625* This is a project specific solution. Alternative luminaire dimensions (e.g. MELLOW LIGHT IV 600 or 750 mm) are available. Please contact your local Zumtobel Staff representative. SYNTO

The SYNTO louvre version of the MELLOW LIGHT IV has also been developed to maximise the benefits of using compact fluorescent TC-L lamps, which are available in ever increasing lumen outputs.

The MELLOW LIGHT IV SYNTO has an optional visor which can be used with the higher output lamps, for example the 80 W TC-L. This visor spreads and distorts the lamp image by broadening it, thus reducing direct glare. Dual Component Lighting Systems MELLOW LIGHT IV Q Grid-mesh/SYNTO

“Single Source Solution for LG3”

MELLOW LIGHT IV Q semi-recessed, grid-mesh controller Options • Colour tints available • VDT attenuator available • Balanced light version • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 1

2 TRANSLUCENT OPAL DIFFUSER 3 4 WINGS utilising variable refractive index 5 plastic for high efficiency 4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp 3 TONAL COLOUR STRIPS operation, and to improve provide differential colour tone maintenance factor between primary optic and secondary chamber 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 246 MELLOW LIGHT IV ML4 B AB 2/24 W T16 Q606*

MELLOW LIGHT IV Q most office applications would be a single luminaire solution to MELLOW LIGHT IV Q Grid- LG3. mesh is a UK market driven solution, optimised for achieving light on to the ceiling. Necessar- ily this means the luminaire can not be flush and so the main optic is below the ceiling level.

One unique feature of the MELLOW LIGHT Q is that it can easily be MELLOW LIGHT IV Q used as a surface luminaire, but it is actually designed to fit into a 600 square lay-in grid aperture.

The MELLOW LIGHT IV Q derivative will put light on both the ceiling and walls and thus to

* For further details: www.zumtobelstaff.com/ml WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 115

“The no-risk louvre solution”

MELLOW LIGHT IV Q semi-recessed, SYNTO louvre controller Options • Colour tints available • VDT attenuator available • Balanced light version • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 1

Typical Cat. no: 42 106 252 MELLOW LIGHT IV ML4 B AC 2/24 W T16 Q606*

MELLOW LIGHT IV Q

MELLOW LIGHT IV Q with a SYNTO louvre gives all the attributes of the grid-mesh version but renders a higher direct ratio onto the task area.

The louvre and grid-mesh optics are interchangeable so can be used in combination to add even greater flexibility and diversity to an installation. Dual Component Lighting Systems MELLOW LIGHT III

“You see the light not the lamp”

MELLOW LIGHT III semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

B1 H 1

4,5 12 H 30 B2 B

Dropped perforated basket with opal inlay for total lamp diffusion.

Typical Cat. no: 40 735 010 MELLOW LIGHT III RCE 1/55 W TC-L M600*

MELLOW LIGHT III Still a much favoured lighting RCE solution by many, but out- classed in the style and perfor- The original in the MELLOW mance stakes by the MELLOW LIGHT concept family of lumi- LIGHT IV range. naires which comprises of a white painted involute reflector for the indirect component and a dropped basket for the lamp diffuser. MELLOW LIGHT III RCE.

A simple solution to the Brightness Management philosophy of lighting the ceiling and vertical surfaces including the walls, partitions and peoples faces.

* For further details: www.zumtobelstaff.com/ml WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 117

“Entirely flush and entirely discreet”

MELLOW LIGHT III semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

B1 H

B4 4,5 B2 B

Dropped perforated basket with opal inlay for total lamp diffusion.

Typical Cat. no: MELLOW LIGHT III RCB 1/40 W TC-L M600 “Project special”* NB. This luminaire is a project special with a minimum order quantity of MELLOW LIGHT III 300 pieces. RCB

This is the sister, flush recessed version of the MELLOW LIGHT III RCE.

The RCB perforated mesh basket is flush with the recessing flange which may be preferred aesthetically or in situations where there are worries about air diffusion.

Since the MELLOW LIGHT III RCB shares the main technology and design principle as the MELLOW LIGHT III RCE it offers all the main benefits and performance.

NB. Made to order only as a project special. Dual Component Lighting Systems SYNTO Louvre

“The fundamentals of lighting synthesis”

SYNTO LRC semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

BIVERGENZ®plus 277 Louvre technology 94 The new generation of louvres, developed in the Research and Develop- 94 4,5 ment laboratories of Zumtobel Staff, 288 optimises the interaction between 310 two unique technical developments. It combines the patented L = 1548 BIVERGENZ®technology and the innovative Unique®cross-blade.

Typical Cat. no: 42 051 815 SYNTO LRC 2/40 W TC-L M600

SYNTO LRC

The original SYNTO luminaire comprises of a white involute reflector for the indirect component and a semi-matt bivergent louvre for the direct component.

Despite the flush louvre allowing no direct illumination on the ceiling this luminaire type, often referred to as a “Dual Compo- nent”, is a generic luminaire much favoured in the office lighting market.

However, it is out classed in style and performance by the MELLOW LIGHT IV SNYTO range. WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 119

“High-tech appearance and performance”

SYNTO LRZ semi-recessed, perforated basket Options • VDT attenuator available • Surface mounting version available • Dimmable DALI

Typical Cat. no: SYNTO LRZ 2/40 W TC-L M600 “Project special” NB. This luminaire is a project special with a minimum order quantity of SYNTO LRZ 300 pieces.

The SYNTO LRZ in the UK is a very successful derivative of the SYNTO LRC due to the additional “techy” appearance given by the ribbed involute reflector. However, this clever technology not only looks good but also attenuates the luminance above 60° compared to the white reflector on the SYNTO LRC.

NB. Made to order only as a project special. Project Special Lighting Systems MIREL T16

“Conventional high direct ratio downlights”

MIREL FEC-B 3/14 W T16, recessed, semi-matt louvre Options • 600/1200/1500 mm • 1/2/3/4 lamps • Dimmable DALI

Typical Cat. no: 42 159 150 FEC-B 3/14 W T16 EVG M600*

MIREL Bivergent® T16 The particular luminaire selection here is highly dependent The latest generation of T16 on the ceiling choice. The most Louvre products offers an ex- common solution for average tensive range, all with semi-matt ceiling heights is the 3/14 W. bivergent® louvres, which meet the onerous 1000 cd/m2 luminance limitation to which some designers still seek to comply.

The Bivergent® principle causes the lamp image, when viewed from 75º elevation downwards, to roll down the principal reflector, such that cut off of the object (lamp) coincides with the image in the reflector disap- pearing.

* For further details: www.zumtobelstaff.com/miral WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 121

“Optional visor for high output lamps”

MIREL REH 2/40 W TC-L, recessed, semi-matt louvre Options • 600/1200/1500 mm • Dimmalbe DALI

Typical Cat. no: REH 2/40 W TC-L EVG M600* NB. Made to order only as a project special. MIREL Bivergent® TC-L with Visor

Despite the prowess of T16 lamps, TC-L lamp configurations are making a strong challenge on several counts, not just 500 square ceiling modules, but also the configurability of shorter, high power TC-L lamps in the Tartan Grid ceiling systems greatly favoured in the premium markets.

As the TC-L lamps get more and more bright, their use in open louvre luminaires in office environments is highly questionable. In consequence with higher output lamps we offer a visor to spread the lamp image and reduce discomfort. Project Special Lighting Systems MIREL T16

“Service Tile options”

MIREL T16

These luminaires offer the flexibility to B1 181 create project specific solutions.

Subject to a minimum order quantity which is project dependant. B 200 4,5 Please contact your local Zumtobel 12 Staff Project Engineer to discuss details of your requirements.

Typical Cat. no: FEC 2/24 W T16 “Project special”*

Service Tile Louvre very light in weight and have Options – T16 engendered a new maintenance methodology: “Basement Main- In the Premium Office Market tenance” wherein defective lumi- so many of the projects use tar- naires are replaced and returned tan grid ceiling systems, where for maintenance in the Plant inevitably the result is the provi- Room. sion of a multi function service tile which also supports the principal luminaire type. Such louvre luminaires have colloqui- ally come to be called “shoebox luminaires” alluding to their compactness.

Zumtobel Staff have optimised luminaire design in this sector by achieving a 70 mm depth including integral emergency invertors. The luminaires are

* For further details: www.zumtobelstaff.com/miral WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 123

“Service Tile options”

MIREL TC-L

These luminaires offer the flexibility to B1 95 create project specific solutions.

Subject to a minimum order quantity which is project dependant. B 114 4,5 Please contact your local Zumtobel 12 Staff Project Engineer to discuss details of your requirements.

Typical Cat. no: FEC 1/36 W TC-L “Project special”* “New version with injection moulded louvre: FEK 1/24 W T16” Service Tile Louvre Options – TC-L

Again the TC-L lamp size and power options combined with new louvre technology offer new horizons in high direct ratio lighting concepts.

Given that the ceiling will always remain relatively dark, the new cell louvre has a satin lustre finish that raises the Ceiling Brightness Impression CBI (see page 26). Meanwhile the avail- ability of a refractor to split the lamp image, thereby reducing glare, means that the louvre solution still has something to offer. Dual Component Lighting Systems MELLOW LIGHT IV Q Balanced/MIREL Balanced

“Lighting with the power to change”

MELLOW LIGHT IV Q BALANCE semi-recessed Options • Colour tints available • VDT attenuator available • Standard Non-Balance versions • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to 1 diffuser wings 2 2 TRANSLUCENT OPAL DIFFUSER 3 WINGS utilising variable refractive index 4 plastic for high efficiency

3 PRIMARY COMPARTMENT 4 GRID-MESH or SYNTO LOUVRE enclosed for optimal T16 lamp CONTROLLER operation, and to improve maintenance factor

Typical Cat. no: 42 159 352 ML4 B EB 2/24 W+2/24 W T16 M600 GET-BC*

MELLOW LIGHT IV Q Using separately controlled pairs Coloured lamps or filters can be Balance of lamps, in the same optical used for adding lighting effects chamber, allows subtle or more for nightscaping or to enhance Recent research has hinted at pronounced changes in the light corporate identity in entrance the possibilities associated with produced by the luminaire. and circulation areas. light that changes in character over time since, as human When equipped with different beings, we appear to be pre- colour temperature lamps the programmed to prefer subtle light output can be changed in change. Whilst change in light- colour, directional character and ing can be achieved with combi- quantity. nations of luminaires there is no doubt that the widespread When equipped with normal application of Balanced Light colour temperature lamps, spe- Concepts will require the intro- cial 17,000 K Blue “third eye” duction of easy to apply innova- colour lamps can be incorporat- tive lighting solutions. ed. This gives the opportunity of incorporating a small proportion The MELLOW LIGHT IV Q of melatonin suppressing blue BALANCE is such a solution. light into the lighting design.

* For further details: www.zumtobelstaff.com/ml WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 125

MIREL FEC-BC 4/14 W + 2/14 W BALANCE recessed Options • Standard Non-Balance versions • Dimmable DALI

BALANCE feature same as the MELLOW LIGHT IV Q BALANCE on previous page except in only one plane through the central inlay panel.

12 B1 52 ET 57

B 12 4,5 L1

Typical Cat. no: 42 160 124 FEC-BC 4/14-2/14 W LMB GET M600*

MIREL Balance

The MIREL BALANCE solution has much of the potential of MELLOW LIGHT IV Q BAL- ANCED but in a fully recessed form. The downward “task” light distribution is precisely controlled by louvres, whilst the central diffusing panel controls the light from the additional lamps above. This simple solution gives access to a whole plethora of effects including changing colour temperatures, changing intensity and changing direction.

* For further details: www.zumtobelstaff.com/miral Innovation In Surface Linear Luminaires PERLUCE

“Like a diffuser luminaire … only better”

PERLUCE D, enclosed louvre Options • Opal diffuser version • 310 mm Square version • Colour tints • Asymmetric wallwasher optic • Dimmable DALI

BIVERGENZ®plus Louvre technology

The new generation of louvres, developed in the Research and Development laboratories of Zumtobel Staff, optimises the interaction between two unique technical developments. It combines the patented BIVERGENZ®technology and The grid of the 3D model illus- the innovative Unique®cross- trates the complex form of the blades. cross-blades. They guarantee optimum light distribution.

Typical Cat. no: 42 159 052 PERLUCE D 1/54 W T16 IP50*

PERLUCE D This cover also means that the fitting is enclosed which stabilis- There are many, many work- es the lamp operating tempera- place installations where the ture to maximise the efficiency lighting possibilities are almost of the lamp and luminaire. entirely dictated by practical considerations such as wiring Add into the equation a modern points or potentially onerous technical appearance and a environments. In such proportion of indirect and side situation the PERLUCE louvre glow and the PERLUCE D scores. louvre steps into the breach as the ideal workplace tool for The PERLUCE D makes clever factory offices, schools and use of different optics and is other education establishments one of the few luminaires to or simply where a different and combine precise optical control modern “techy” appearance is via a louvre and protection via a required in a clean, surface clear cover. mounted design.

* For further details: www.zumtobelstaff.com/perluce WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 127

“Wallwasher Options for Good Office Lighting Practice”

MIREL FEW 1/55 W TC-L M600, recessed linear

The illumination of wall surfaces can be achieved in numerous ways. The reflector within the FEW is designed to give the best uniform distribution possible with a fully recessed luminaire. Small dimensions make it a very discreet solution to many wallwashing problems.

Typical Cat. no: 42 159 253 MIREL FEW 1/55 W TC-L EVG M600*

* For further details: www.zumtobelstaff.com/miral

PERLUCE WW 1/49 W T16, surface mounted, linear

Several of the many applications where PERLUCE makes an ideal lighting solution, including schools, uni- versities, healthcare and laboratories, also require good illumination of the vertical surfaces. PERLUCE WW offers this with the same style as the rest of the PERLUCE family.

Typical Cat. no: 42 159 366 PERLUCE W 1/49 W T16 PM IP54*

* For further details: www.zumtobelstaff.com/perluce

CLARIS II WW 1/28 W T16, surface mounted, linear

The CLARIS II WW is a very useful addition to the CLARIS II range in installations of CLARIS where wallwashing is also required.

Typical Cat. no: 42 174 126 CLARIS II WW 1/28 W T16 EVG*

* For further details: www.zumtobelstaff.com/claris2

PANOS HWW 1/32 W TC-TEL 200

PANOS HWW uses a very clever ribbed detail on one side of the reflector to achieve a more asymmetric distribution without changing the appearance of the installation from the main direction of view.

Typical Cat. no: 60 810 240 PANOS HWW 1/32 W TC-TEL 200*

* For further details: www.zumtobelstaff.com/panos Direct Downlight Lighting Systems PANOS

“Multi-talented to meet any requirements”

Options • Reflector options: Faceted highly specular, Smooth highly specular, Smooth matt, • Smooth white coated and Faceted highly specular with PUREST SILVER (PSP+) • Recessed and surface mounted versions • Increased thermal reflection gives longer lamp service life • High and Low housing depths with horizontal and vertical lamp positions available • Versions with UGR:16/19 suitable for use in environments with DSE equipment • Reflector and cover ring unit made of high-quality,UV-resistant polycarbonate • Supplied as complete models consisting of luminaire and separately housed bal- last unit • No-tool installation into ceiling for ceiling thickness' between 1–25 mm • Attachments ordered separately

High and Low Recessed

High and Low Surface

Low voltage and Metal halide PANOS versons

PANOS 17 % more reflective than alu- minium). The silver is precisely Standard PANOS reflectors pro- applied onto the reflector by duce exceptional photometric means of a high tech sputtering performance. But radical new technique and sealed. This design thinking can enhance new coating technique can be this still further: enter PSP+. The applied to all highly polished material used for the new PSP+ reflectors made of high-quality coating is PUREST SILVER polycarbonate in the downlight (100 % silver – which is over range PANOS L and H.

Typical Cat. no: Typical Cat. no: Typical Cat. no: 60 810 236 PANOS HF1/32 W TC-TEL 200* 60 810 251 PANOS HF 2/26 W TC-DEL 200* 60 810 068 PANOS LM 1/26 W TC-DEL 175*

* For further details: www.zumtobelstaff.com/panos WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 129

“Innovative downlight solutions”

2LIGHT/E1 1/42 W TC-TELI, recessed single module

The lit effect of 2LIGHT is beyond description. It is a downlighter but that is where the similarity ends. 2LIGHT has a mystic halo effect that is entrancing and is ideal for break-out zones and common parts.

Typical Cat. no: 60 810 782 2LIGHT E1 1/42 W TC-TELI EVG*

* For further details: www.zumtobelstaff.com/2light

LIGHT FIELDS Mini E 2/32 W TC-TELI recessed

The 300 mm square LIGHTFIELDS is a very neat corridor lighting solution. Good glare control yet re- cognisable luminosity allows this luminaire to depict the notional corridor.

Typical Cat. no: 42 159 215 L-FIELDS Mini E 2/32 W TC-TELI EVG M600*

* For further details: www.zumtobelstaff.com/lightfields

QUARTOS CQF 2/26 W TC-DEL EVG 260

Another square solution for corridor, but this is a downlighter with many lamp and reflector variants to make it suitable for numerous other applications.

Typical Cat. no: 40 938 519 QUARTOS CQF 2/26 W TC-DEL EVG 260 Free-standing Luminaires

“Variable, adaptable lighting solutions”

Flexibility in the office requires programmed individually by variable, adaptable lighting the user or controlled through ID-S solutions which can be person- four pre-set scenes. Its daylight FLEXOS alised to cope with the chang- sensor and presence detector Commissioned by Zumtobel ing needs of individual users and timer unit ensure the highest As its name suggests, the Staff in 1987, from Italian desi- – or with frequent reconfigura- quality illumination of the task FLEXOS free-standing direct/ gners Sottsass Associati, the tion of the workstations. For area at all times. indirect luminaire, designed by ID-S range has since become a many installations, free-stand- Da Costa & Wolf, takes the prin- design classic due to it’s clear, ing luminaires may be the ciple of flexibility in workplace simple lines and its versatile favoured option. Research has lighting one step further. The technical performance. The also shown that by giving KAREA entire FLEXOS fitting be re-posi- luminaire incorporates a safety office workers control over tioned and is available with one, diffuser made of either 4 mm their local environment their With its slender luminaire head two, three or four luminaire heat-resistant tempered silicate productivity will increase. the free-standing direct/indirect heads, all of which can be rotat- glass or ceramic glass, and has Zumtobel Staff offers a number KAREA luminaire model (and ed and switched separately. This a 12 mm glass frame with lumi- of free-standing variants of its matching wall light) has slim, means that a single luminaire, nous edges, integrated into the existing ranges, as well as geometric lines and is made with one base and one electrical head. Featuring a range of tung- some specific free-standing from simple, elegant materials. connection can illuminate up to sten halogen and metal halide models offering a range of The direct light component is four desks highly efficiently and lamps to produce a substantial distinctive features. controlled by a perforated metal according to individual require- indirect uplight component, the optic, ensuring pleasant light ments. Even the wall light ver- ID-S can provide a pleasant, distribution in the task area. sion can be adjusted in two warm lighting ambience. The At the same time, the integral axes, offering a variety of adjustable matt anodised alu- SensControl lighting manage- options for optimum vertical illu- minium reflector in the head of LIGHT FIELDS-S ment system allows individual mination or mounted on the top the luminaire can be used for adjustment of the illuminance, of partition walls or inclined ceil- effective task lighting. With its slender luminaire head, depending on the user’s person- ings. FLEXOS comes with a uncluttered lines, expressive al wishes and needs, the indi- choice of two optics – a louvre materiality and elegant looks, vidual task and the specific optic, guaranteeing a large the LIGHT FIELDS-S free-stand- daylight conditions. direct light component on the ing luminaire is sympathetic to working plane or a perforated The SensControl system means it’s surroundings. In terms of steel optic, with a reduced direct that lighting levels can be opti- lighting quality, the free-standing lighting component, to ensure mised individually, depending on model shares the same unique LANOS more pleasant illumination of the the task, ambient light and micropyramidal optic as all other workstation. FLEXOS can be user’s requirements. The user versions of LIGHT FIELDS. This The LANOS luminaire has an controlled either by the Sens can choose between automatic guarantees brilliant, glare-free altogether softer, less angular Control system or using WinDIM and manual control in addition lighting and a high output ratio. appearance but still provides a software allowing FLEXOS fit- to a pivoting PIR sensor which The asymmetric indirect compo- high output direct/indirect light tings to be switched or dimmed automatically switches off the nent provides pleasant general distribution. Sophisticated con- directly from a PC. Finally, a luminaire whenever no move- lighting and brightens up the trols are also built-in to LANOS bit of colour can be added by ment is detected in the task depth of a room. The light provi- for manual or automatic control. using colour trims to match the area during a set period (up to ded by LIGHT FIELDS-S can be interior design or corporate 15 minutes). Depending on the individually adjusted to suit both identity. luminaire version, the control mood and taste, using the inte- system is set and operated gral SensControl lighting Man- either via buttons or via an LCD agement system, which can be display. WORKPLACE LIGHTING – PRODUCTS AND RESOURCES 131

“The future has arrived” 633

ø 538 1940

HELIODISC

HELIODISC is a task luminaire with added flexibility since it has separately switchable direct, indirect and task illumination. This gives architects and lighting designers greater planning possibilities. HELIODISC is a design oriented luminaire with a transparent, organic design for office lighting according to the Task Area Concept in EN 12464.

For more information on any of the products featured on these pages please contact your local Zumtobel Staff Lighting representative. VPI Wall Lighting

All current codes of practice VPI: Ultimate Recessed for lighting primarily refer to the Wallwashing Wallwashing notional horizontal working plane. This has tended to popu- larise the use of regular arrays of luminaires optimised to light a plane that none of us actually see.

In fact, in almost every building we enter it’s the walls that do- minate our vista. So, in every main interior space we would recommend the selection of at least one wall for a specialist lighting effect. Here we offer a sample of different wall lighting VPI 1: Ultimate wallwashing VPI 2: Recessed wallwashing approaches, from wall-washing Typical offset: 600–900 mm Typical offset: 300–600 mm Typical spacing: 900–1,200 mm Typical spacing: 750–1,000 mm to scolloping. While wallwashing Wallwashing with semi-recessed compact Wallwashing with fully recessed compact fluo- is a fairly well established tech- fluorescent luminaire gives a perfect soft wash rescent luminaires that cannot light right up to right up to the ceiling trim. the ceiling trim and give quite a fall off down nique, it is often not done well; Luminaires: the wall. This sometimes necessitates a second on the other hand, wall scollop- 778 301/302 compact fluorescent row of luminaires. The luminaire is from the PANOS S QT-DE/HIT-DE/HST PANOS family and looks identical to most ing usually happens without the downlighters in that range, which means it does designer intending it and usually give a “clean” ceiling appearance. Luminaires: has a messy, unplanned PANOS HWW CFL appearance. PANOS MWW QT/HIT

At Zumtobel Staff Lighting in the VPI 3: Linear/Continuous wallwashing Typical offset: 750–1,000 mm UK we have taken up the cause Typical spacing: 900–1,800 mm of wall lighting and developed Here the lighting is very conspicuous, compris- ing surface or suspended linear luminaires, the concept of VPI (Verti-Planar usually mounted on track. This offers great Illuminance, to give it its full flexibility in aiming the fixtures, which can be moved up and down the track. name). This is a major design Luminaires: aid to the art of lighting walls. ARCADE suspended continuous wallwashers RTXII WW – 1 or 2 lamp T16 Here we present the “VPI” spec- XENO WW QT-DE/HIT-DE trum in a shortened form, with SPIRIT HST/TC-TEL/QT-DE advice on simple offset and spacing. The brochure “Lighting Up the Wall: a VPI Design Guide” is available in english. WORKPLACE LIGHTING – THE VERTICALS 133

Multi-Cusp Cornice Ellipsoidal Scolloping Scolloping Scolloping

VPI 6 & VPI 7: Multi-cusp scolloping VPI 8: Cornice scolloping VPI 9: Ellipsoidal scolloping Typical offset: 150–300 mm Typical offset: 40–60 mm Typical offset: 300–400 mm Typical spacing: 500–750 mm Typical spacing: 150–250 mm Typical spacing: 600–750 mm Wall scolloping with incandescent, low voltage Here very gentle wall scolloping along the very Very strong wall scolloping using ultra-narrow lamps in open reflectors and luminaires close to top of the wall, at cornice level, is achieved by beam QR111 lamps in multi-directional down- the wall, creates a multitude of secondary using fibre optics or low power, low voltage lights. The lamps are very precise and produce cusps on the wall. These can be incorporated downlights. no stray light, so the scollop shape is almost a into an intentional pattern. VPI 6 uses fixed Luminaires: pure ellipse. downlights whereas VPI 7 adjustable versions STARFLEX fibre optics Luminaires: can be aimed higher or lower on the wall. STARLIGHT 2 recessed low voltage downlights PANOS S recessed luminaires recessed lumi- Luminaires: naires PANOS M low voltage recessed luminaires PANOS S low voltage recessed luminaires

VPI 5: Feathered edge scolloping Typical offset: 450–600 mm Typical spacing: 1,200–1,800 mm When lighting rooms with ordinary compact fluorescent downlights, the first row of luminaires will very often be more than one metre away from the walls. By using the VPI 5 technique, the first row is deliberately positioned within 450 and 600mm of the wall, giving the appearance of a deliberate pattern of feathered edge scollops. These scollops will become “sharper” with a mirror or specular reflector, rather than one that is matt or white. Luminaires: PANOS L or H compact fluorescent QUARTOS compact fluorescent Advisory Services References and Useful Websites

Advisory Services and channel all our energies into Software Installation Instructions References specifier support and not to compromise our fee earning, Software for downloading free Installation instructions for our professional customers. of charge can be found at products are available to down- Lighting Solutions Contact the UK Technical team on: www.zumtobelstaff.co.uk by load at www.zumtobelstaff. Consultant (LSC) [email protected] following the Service Centre/ co.uk by following the Service Download/Programs link. Soft- Centre/Download/Installation Far from having a conventional ware includes Zumtobel Staff Instructions link. salesforce, Zumtobel Staff in the Grey Imports Product Explorer, the COPHOS UK employ a network of remote lighting design programs and users who are entirely devoted Specifiers may be surprised to other tools designed to ease O&M Manuals to servicing the needs of speci- learn that ZS luminaires sup- considerably your daily work. fiers. Our personnel are the best plied on some projects in the Installation, operation and main- Included is COPHOS Phoenix, in the industry and, to ensure UK may have been sourced, by tenance instructions and data- THE working tool for lighting de- unparalleled specifier support, the purchasing organisation, sheets are available for O&M sign – easy to handle, and sup- have embarked on the 3 year from unofficial channels and not Manuals at www.zumtobelstaff. porting both emergency lighting Zumtobel Staff Lighting Solu- via the Official UK Sales Organi- co.uk by following the Service and dimming with Luxmate. tions Consultant course. This sation, based in Hayes Middlesex. Centre and Product links. course is aimed at taking the Ensuring that the UK operation lighting specialist to a new level is the source of all ZS product Photometric Data of competence by broadening required for projects allows us CAD Data knowledge in both the lighting to invest for the future and to Data Plug-Ins for lighting design 2D CAD symbol data for Zumto- discipline and across the whole continue to provide high levels programs can be found at bel Staff products to be used in building design spectrum. Thus of UK specifier support. Unoffi- www.zumtobelstaff.co.uk by CAD programs is available at your LSC qualified Zumtobel cially sourced product is not following the Service Centre/ www.zumtobelstaff.co.uk by Staff contact is able to provide covered by the normal compre- Download/Photometric Data following Service Centre/Down- professional and practical design hensive warranty provided by link. Use the data Plug-In to loads/2D CAD data. Our 2D advice on all aspects of work- the UK operation and even download quickly and easily to CAD luminaire library is available place lighting from boardrooms basic levels of pre and post your computer the current data for AutoCAD in DXF and DWG to break-out zones, showrooms order support is unlikely to be of all Zumtobel Staff luminaires format. 3D data is also available to stairwells, atria to offices. available. in IES, LDT (Eulumdat) or TM14 in several formats including DXF, To find out who in building light- file formats. Detailed instruc- Rhino, Lightscape and 3D Stu- ing design is Master of all tions are also available covering dio Max, free of charge from the Trades and not a sciolist visit Flux Futura Seminars the use of Photometric Data same source. www.zumtobelstaff.co.uk and files in COPHOS Phoenix, Held regularly throughout the follow Lighting Solutions Consultant. DIALux and Relux. year, the Zumtobel Staff Lighting Flux Futura “CPD” accredited Zumtobel Staff Group Environmental protection, Technical Department lighting seminars are a great Specifications learning experience. The pur- health and safety guidelines Zumtobel Staff UK employs a pose of these events is to Individual products are described The Group realises that all its team of qualified and experi- address the various strategic in detail at www.zumtobelstaff. business activities are associat- enced lighting engineers who methods for illuminating the co.uk by following the Products/ ed with responsibility for envi- are available to assist specifiers modern environment, particular- Specifications link. This informa- ronmental protection, health and with advice and information on ly offices. tion can be downloaded for use safety, ascribing top priority to how to create the best possible Places can be booked at in lighting design programs and dealing with these issues. The lit space. We do not do lighting www.zumtobelstaff.co.uk by to generate specifications. environmental protection, health designs, preferring instead to following the Flux Futura link. WORKPLACE LIGHTING – ADVISORY SERVICES/REFERENCES 135

and safety guidelines of the Group thus reflect its commit- Useful Websites the UK and Ireland’s largest association with the British ment to ensure that sound envi- professional lighting association Institute of Facilities Manage- ronmental protection, health and www.products.bre.co.uk/bree- and is dedicated solely to ex- ment (BIFM). safety measures are implement- am/index.html – BRE Environ- cellence in lighting. ed in all its business areas, sig- mental Assessment Method www.luxmate.co.uk – nalling that in this respect it (BREEAM), Building Research www.iald.org – International LUXMATE are Lighting Manage- seeks to apply high standards Establishment (BRE) Association of Lighting Design- ment and Daylight harvesting group-wide at international level. ers, Chicago, USA specialists and are part of the Preparations have been made www.bco.org.uk – British Worldwide Zumtobel organi- with the aim of integrating envi- Council for Offices (BCO) www.lightright.org – The Light sation. ronmental protection and indus- Right Consortium aims to shift trial occupational safety into the www.bifm.org.uk – British Insti- the paradigm of lighting specifi- quality management system. tute of Facilities Management cation and installation in com- Zumtobel Staff is thus prepared (BIFM) mon practice toward ergonomi- for ISO 14001 certification. cally designed lighting solutions. www.bsi-global.com – BSI British Standards is the Nation- www.lif.co.uk – Lighting Indus- Quality management sys- al Standards Body of the UK try Federation (LIF) tem certification www.cibse.org – The Char- www.diag.org.uk – The Euro- ZUMTOBEL STAFF has been tered Institution of Building Ser- pean Energy Performance of certified according to EN ISO vices Engineers. The Society Buildings Directive (EPBD) 9001 since 27 May 1991, and of Light and Lighting (SLL) is comes into force in the UK in according to EN ISO 9001:2000 part of CIBSE and acts as the January 2006, and will have since 27 November 2003. professional body for lighting major business implications for This certificate is acknowledged in the UK all owners, operators, design- by IQ Net partners in more than ers and developers of new and 30 countries. www.dial.de – DIAL is a manu- existing buildings. The Directive facturer-independent services Implementation Advisory Group enterprise for lighting engineer- (DIAG) has been established to Glossary of Terms ing and building technology advise the UK Government on and is not profit oriented. the energy performance of For a glossary of terms please buildings and the implementa- refer to the Zumtobel Staff www.eldaplus.org – European tion of the Directive in a timely Lighting main Product Cata- Lighting Designers’ Association manner. logue. (ELDA+), Guetersloh, Germany www.workplaceintelligence.co.uk www.icel.co.uk – Industry – The Workplace Intelligence Committee for Emergency Unit develops and shares infor- Lighting, ICEL is the leading mation and ideas on creating UK authority on Emergency more distinctive, productive and Lighting healthy workplaces. Zumtobel Staff sponsor the WIU, which www.ile.org.uk – The Institution was founded by Herman Miller of Lighting Engineers (ILE) is and forward thinking inc. in INDUSTRY SPORT Throughout the world, Zumtobel Staff AND ENGINEERING AND LEISURE is the competent reliable partner for innovative lighting solutions in all areas of application of professional interior lighting:

Industry and Engineering Sport and Leisure Transit areas and Car parks

Offices and Education Presentation and Retail Hotels and Catering TRANSIT AREAS OFFICES AND CAR PARKS AND EDUCATION Art and Culture Health & Care Orientation and Safety Active Light

With production plants in Austria, Germany, Australia and the USA, and sales organisations in all major Euro- pean markets as well as commercial agencies in most regions of the world, Zumtobel Staff is one of the biggest PRESENTATION HOTELS international enterprises in the lighting AND RETAIL AND CATERING sector.

As a leader in innovation, we guarantee our customers global competence in lighting consulting and design assistance, superior product quality and future-proof technologies – from individual luminaires to electronic lighting management systems.

ART HEALTH & AND CULTURE CARE Corporate goal: We want to use light to create worlds of experience, make work easier and improve communica- tions and safety while remaining fully aware of our responsibility to the environment. United Kingdom Norway Zumtobel Staff Lighting Ltd. Zumtobel Staff Belysning AS Unit 4 - The Argent Centre, Industriveien 11 Pump Lane 1481 Hagan Track and spots Hayes/Middlesex UB3 3BL Tel: +47/(0)670/62230 Tel. +44/(0)20 8589 1800 Fax: +47/(0)670/62269 Fax +44/(0)20 8756 4800 Email: [email protected] Email: [email protected] Modular lighting systems www.zumtobelstaff.co.uk Sweden Zumtobel Staff USA and Canada Birger Jarlsgatan 57 Zumtobel Staff Lighting 113 56 Stockholm 3300 Route 9W Tel: +46/(0)8/26 26 50 Down-/uplights Highland, New York 1258-2630 Fax: +46/(0)8/26 56 05 Tel. +1/(0)845/691 62 62 E-mail: [email protected] Fax +1/(0)845/691 62 89 www.zumtobelstaff.se www.zumtobelstaff.us www.zumtobelstaff.ca Poland Recessed luminaires Zumtobel Staff Przedstawicielstwo w Australia and New Zealand Polsce Zumtobel Staff (Australia) Pty. Ltd. ul. Zuga 14/2 2 Wella Way 01-806 Warsaw Surface-mounted and Somersby, NSW 2250 Tel. +48/22 635 6499 Tel. +61/(2)4340 3200 Fax +48/22 865 1530 Fax +61/(2)4340 2108 www.zumtobelstaff.pl Email: [email protected] pendant luminaires www.zumtobelstaff.com.au Russia Wallwashers Zumtobel Staff Representative Office China Office 2111/Skakovaya-17 Zumtobel Staff 125040 Moscow T5-2-152 Tayuan Diplomatic Compound, Tel. +7/095 945 3633 No. 1 Xin Dong Road, Chaoyang District Fax +7/095 945 1694 LED, task, wall and uplights 100600 Beijing www.zumtobelstaff.ru Tel. +86/(10) 8532 3886 Fax +86/(10) 8532 3889 Head offices Email: [email protected] Zumtobel Staff GmbH Continuous row and Schweizer Strasse 30 Hong Kong Postfach 72 Zumtobel Staff 6851 Dornbirn, AUSTRIA Unit 4319-20, Level 43, Tel. +43/(0)5572/390-0 batten luminaires Tower 1, Metroplaza, Fax +43/(0)5572/22 826 High-bay luminaires 223 Hing Fong Road, Kwai Chung, N.T. Zumtobel Staff GmbH & Co. KG Tel. +852/(0)2503 0466 Grevenmarschstr. 74-78 Fax +852/(0)2503 0177 32657 Lemgo, GERMANY Luminaires with extra protection Email: [email protected] Tel. +49/(0)5261/2 12-0 Fax +49/(0)5261/2 12-7777 Singapore www.zumtobelstaff.de Zumtobel Staff Representative Office No. 5 Kaki Bukit Crescent #04-03 www.zumtobelstaff.com Lighting Controls 416238 Singapore Tel. +65/(0)6848 2560 Fax +65/(0)6234 4972 Email: [email protected]

Emergency lighting

Art.-No. 04 797 631-UK 04/05 © Zumtobel Staff Technical data was correct at time of going to press. We reserve the right to make technical changes without notice. Please contact your local sales office for further information. Medical supply systems Printed on environmentally-friendly chlorine-free paper. Lighting for the Workplace