Copyrighted Material

Total Page:16

File Type:pdf, Size:1020Kb

Copyrighted Material Index A American Society of Heating, Refrigerating, Absorption, surface, 71–72 and Air-Conditioning Engineers AC (alternating current), 225, 226 (ASHRAE), 266–268 Accent lighting, 13 Americans with Disabilities Act (ADA), detail drawings, 214 3, 267 luminaires, 145, 146 Ammons, A. R., 19 symbols for, 186 Amperes, 226 Accessories (luminaires), 154–156 Angle of incidence, 67, 69 Accommodation, 50 ANSI/ASHRAE/IESNA 90.1, 267–268 ADA (Americans with Disabilities Act), Aperture, 143 3, 267 Apparent brightness, 54 Adaptation, 50–51 Apparent color, 120, 121 Additive mixing, 124–125 Architects: Adjacent colors, 124 communication with, 164 Adjustable luminaires: as lighting designers, 2 for accent lighting, 214 preliminary design information from, recessed, 145, 146 8–9 symbols for, 186 Architect (magazine), 290 Aesthetics, light supporting, 2 Architectural Lighting Magazine, 289 Aesthetic designs, 26–30 Architectural Record, 290 Aging eyes, 284–285 Architectural SSL, 289 AIA (American Institute of Architects), Architecture, in lighting design, 15–16 266 Arc tubes, 84–85 A lamps, 92, 93 COPYRIGHTEDAR lamps, 93, 94 MATERIAL Al-Haytham, Ibn, 38–39 Art, light as, 41, 44, 45 Allen, Woody, 37 ASHRAE (American Society of Heating, Alternate luminaires, 165 Refrigerating, and Air-Conditioning Alternating current (AC), 225, 226 Engineers), 266–268 Ambient lighting, 13 ASHRAE 90.1, 267–268 Ambient luminescence, 11, 12 ASHRAE/USGBC/IES Standard 189.1, American Institute of Architects (AIA), 266 268 307 bindex 307 July 28, 2014 7:43 PM Index Astigmatism, 50 Building orientation, 170 Astronomical time clock, 239 Building program, 179–180 Average life, 84, 86, 88 Awnings, 176, 177 C CAD software, 258–260 B CaGBC (Canadian Green Building Council), Baffle, 143, 144 274 Ballasts, 83, 85 Calendar events, 239 dimming, 231 California Title 24, 269 fluorescent lamps, 82–83 Canadian Green Building Council (CaGBC), Ballast factor (BF), 257 274 Beam angle, 99–100 Canadian Standards Association, 274 Bidding phase, 181 Candela (cd), 246 BIM (building information modeling), Candela per square meter (cd/m2), 247 260–261 Candelas table, 20–252 Binning (LEDs), 87 Candlepower (cp), 246 Biological rhythms, 281–283, 285 Candlepower distribution curve, 250–252 Blackbody radiators, 110, 111 CA (construction/contract administration) B lamps, 92, 93 phase, 182 Book of Optics (Ibn Al-Haytham), 38–39 Cataracts, 50 Brightness, 9–10 CCT (correlated color temperature), adaptation to, 50–51 111–113 and aging eyes, 285 cd (candela), 246 apparent, 54 cd/m2 (candela per square meter ), 247 colored light and perception of, CD (construction documentation) phase, 130–132 181 relative perception of, 54, 55 Ceilings: terms describing, 245 illuminating, 16, 17 and visual performance, 53–54 luminous, 6, 65, 221–222 Brilliants, play of, 11–13 Centralized control systems, 235–236 Budget: Ceramic metal halide (CMH) lamps, 84 as design consideration, 34 CFLs, see Compact fluorescent lamps in design development, 180–181 Chroma, 132 Building area method (LPD), 268 Chromaticity, 104, 123 Building codes, 265 CIE (International Commission on compliance with, 3 Illumination), 112–114, 288 model, 266–267 Circadian rhythms, 168, 281–283, 285 and need for lighting designers, 2 The City Limits (A. R. Ammons), 19 Building Design + Construction, C lamps, 92, 93 290–291 Clerestories, 172, 174 Building information modeling (BIM), CM (construction manager), 164 260–261 CMH (ceramic metal halide) lamps, 84 308 bindex 308 July 28, 2014 7:43 PM Index Codes: Color rendering, 80, 112–117 building, 265–267 Color rendering indices, 114–117 electrical, 227 Color Rendering Index (CRI), 114–116 energy, 267–270 Color stability, 117–121 resources, 270 Color temperature, 109–113 Code of Hammurabi, 265 Color vision, 51–53 Coefficient of utilization (CU), 253–254 COMcheck, 270 Cold cathode lamps, 89, 127 Commissioning, 231, 242 Color blindness, 50 Communication: Color consistency, 117 of design ideas, 17, 20–22 Color constancy, 120 through documentation, 182 Colored glass filters, 129–130 Compact fluorescent lamps (CFLs), Colored light, 122–139. See also Color 83, 84 in light bases, 98 from cold cathode lamps, 127 colored light from, 127 color filters for, 128–130 describing, 103 and environment, 133–139 shapes and sizes, 92–95 from fluorescent lamps, 127 Complimentary colors, 123 from LED lamps, 127–128 Computer generated images, 20–22 meanings associated with, 132–133 Conceptual designs, 30–33 from neon lamps, 127 Cones (eye), 48–53 and reflectance, 71–72 Construction (contract) administration relative perception of, 55 (CA) phase, 182 resources, 139–140 Construction documentation (CD) phase, use of, 130–139 181 and vision, 130–132 Construction manager (CM), 164 Color fidelity indices, 116 Construction Specifications Institute Color filters, 128–130 (CSI), 209 Color gamut, 124, 126 Consumer information, 106, 107 Color in light, 10, 109–122. See also Continuous runs of luminaires, symbols Colored light for, 187 color reference system, 112 Contract (construction) administration color rendering, 80, 112–117 (CA) phase, 182 color stability, 117–121 Contrast: color temperature, 109–113 and aging eyes, 285 in halogen vs. incandescent lamps, 81 light and shadows for, 13–14 from LEDs, 87, 88, 104 and visual performance, 54–55 white light, 109 Controls, see Lighting controls Color preference indices, 117 Control protocols, 237–239 Color quality scale (CQS), 117 Control zones, 233 Color references, 112 Cool colors, 124, 131 Color reference system, 112 Cornea, 48, 49 309 bindex 309 July 28, 2014 7:43 PM Index Correlated color temperature (CCT), 111–113 Designers Lighting Forum (DLF), 288 Cortisol, 282 Design Guides (IES), 248 Cost of ownership, 105, 276–277 Design phases, 179–182 Cove lights, 151 Detail drawings, 210–222 Cove lighting, 151, 215–218 accent lighting, 214 cp (candlepower), 246 coves, 215–218 CQS (color quality scale), 117 luminous ceilings, 221–222 Credentials, professional, 4–5 scallops, 219–221 CRI (Color Rendering Index), 114–116 wall grazing, 212–213 CSI (Construction Specifications Institute), wall washing, 210–212 209 Dichroic filters, 129–130 CU (coefficient of utilization), 253–254 Dickens, Charles, 167 Cultural color preferences, 133 Diffuse distribution, 77 Current, 225 Diffuse lighting, subjective impressions Custom luminaires, 161, 162 and, 61, 62 Cut-off angle, 75 Diffusers, 69 Cut sheets, see Luminaire cut sheets Diffusion, 69, 70 Digital addressable lighting interface D (DALI), 237–238 DALI (digital addressable lighting Digital multiplex lighting (DMX, DMX512), interface), 237–238 237–238 Dark adaptation, 51 Dimmers, 228–232 Daylight harvesting, 235 Dimming ballasts, 231 Daylighting, 167–177 Dimming layout, 240, 241 benefits of, 167–168 Dimming systems, 233–234 to conserve resources, 3 centralized, 235–236 designing, 171–176 control protocols, 237–239 glazing, 171 distributed, 236–237 planning for, 168–170 Direct current (DC), 225, 226 resources, 176, 178 Direct distribution, 76 shading strategies, 176, 177 Direct glare, 74, 75 sidelighting, 172, 174–176 Direct/indirect distribution, 77 toplighting, 172–174 Directional lamps, 93–94 DC (direct current), 225, 226 beam angle and field angle, 99–100 DD (design development) phase, 168, describing, 100–102 180–181 Disability glare, 76 Decorative fixtures, 14 Distributed lighting systems, 10, 236–237 Decorative lighting, 3 Distribution of light, 67–77 Describing lamps, 100–104 diffusion, 69, 70 Design, see Lighting design to emphasize/deemphasize room Design development (DD) phase, 168, elements, 3 180–181 glare, 73–76 310 bindex 310 July 28, 2014 7:43 PM Index interaction of light and materials, 67–72 Einstein, Albert, 37, 41 reflection, 67–68 Electrical contractors (ECs), 2, 85, 165 refraction, 69, 70 Electrical engineers: resources, 78 as lighting designers, 2 shadows and luminaires, 72–73 preliminary design information from, 9 surface reflection and absorption, Electrical engineering, 227 71–72 Electrical suppliers, 165 transmission, 70–71 Electricity, 225–227 types of, 76–77 Electromagnetic interference, 229 DLF (Designers Lighting Forum), 288 Electromagnetic spectrum, 39 DMX, DMX512 (digital multiplex lighting), Electronic ballasts, 85 237–238 Ellipsoidal reflector spotlights, 152 Documentation, 179–222 Energy codes: and design phases, 179–182 for commercial buildings, 34 fixture schedule, 199, 208–209 compliance with, 3 layout and installation details, 210–222 model codes, 267–269 of lighting controls, 240–242 verifying compliance with, 269–270 luminaire cut sheets, 199–207 Energy conservation, 3 luminaire schedule, 199 daylighting for, 167 reflected ceiling plan (lighting plan), through lighting controls, 228 183–198 voluntary energy programs, 273–276 resources, 222–223 Energy consumption: specifications, 209–210 allotted to lighting, 227–228 Domains of practice, 5 as design consideration, 34 Downlights, 144–145 measured in watts, 226 accent, 145, 146, 186, 214 Energy efficiency, 105 recessed adjustable, 145, 146 Energy Policy Act of 1992 (EPAct 1992), scallops of light from, 210, 219–221 268 symbols for, 186 Energy Star, 275 wall grazers, 147 Environment: wall washers, 145–147, 186–187 color in creating, 133–139 Downlighting, subjective impressions and, defined, 57 59–62 light supporting, 2 Driver (LEDs), 87 schemas relating to, 58 EPAct 1992 (Energy Policy Act of 1992), E 268 Eames, Charles, 179 Euclid, 38 ECs, see Electrical contractors Expectations, 58 Eco-Structure, 291 Exterior shelves, 176 Edison, Thomas, 79 External devices: Efficacy,
Recommended publications
  • Applications of High Dynamic Range Imaging Stereo Matching and Mesopic Rendering
    Applications of High Dynamic Range Imaging Stereo Matching and Mesopic Rendering PhD THESIS submitted in partial fulfillment of the requirements for the degree of Doctor of Technical Sciences within the Vienna PhD School of Informatics by Eng. Tara Akhavan Registration Number 1128895 to the Faculty of Informatics at the Vienna University of Technology Advisor: Assoc. Prof. Mag. Dr. Hannes Kaufmann External reviewers: . Alan Chalmers, WMG, University of Warwick, United Kingdom. Kadi Bouatouch, ISTIC, University of Rennes I, France. Vienna, 8th April, 2017 Tara Akhavan Hannes Kaufmann Technische Universität Wien A-1040 Wien Karlsplatz 13 Tel. +43-1-58801-0 www.tuwien.ac.at Declaration of Authorship Eng. Tara Akhavan Address I hereby declare that I have written this Doctoral Thesis independently, that I have completely specified the utilized sources and resources and that I have definitely marked all parts of the work - including tables, maps and figures - which belong to other works or to the internet, literally or extracted, by referencing the source as borrowed. Vienna, 8th April, 2017 Tara Akhavan iii Acknowledgements Firstly, I would like to express my deepest gratitude to my supervisor Hannes Kaufmann for his unlimited support, inspiration, motivation, belief, and guidance. My special thanks to Christian Breiteneder who was always there to help resolving hardest problems with wisdom and vision. I am very thankful to Alan Chalmers and Kadi Bouatouch who agreed to be my thesis external reviewers but most importantly planned valuable workshops through the course of my PhD and invited me to network with and learn from the experts in the field. Part of my PhD research was conducted at Tandemlaunch Inc.
    [Show full text]
  • Adjustment of Lighting Parameters from Photopic to Mesopic Values in Outdoor Lighting Installations Strategy and Associated Evaluation of Variation in Energy Needs
    sustainability Article Adjustment of Lighting Parameters from Photopic to Mesopic Values in Outdoor Lighting Installations Strategy and Associated Evaluation of Variation in Energy Needs Enrique Navarrete-de Galvez 1 , Alfonso Gago-Calderon 1,* , Luz Garcia-Ceballos 2, Miguel Angel Contreras-Lopez 2 and Jose Ramon Andres-Diaz 1 1 Proyectos de Ingeniería, Departamento de Expresión Gráfica Diseño y Proyectos, Universidad de Málaga, 29071 Málaga, Spain; [email protected] (E.N.-d.G.); [email protected] (J.R.A.-D.) 2 Expresión Gráfica en la Ingeniería, Departamento de Expresión Gráfica Diseño y Proyectos, Universidad de Málaga, 29071 Málaga, Spain; [email protected] (L.G.-C.); [email protected] (M.A.C.-L.) * Correspondence: [email protected]; Tel.: +34-951-952-268 Abstract: The sensitivity of the human eye varies with the different lighting conditions to which it is exposed. The cone photoreceptors perceive the color and work for illuminance conditions greater than 3.00 cd/m2 (photopic vision). Below 0.01 cd/m2, the rods are the cells that assume this function (scotopic vision). Both types of photoreceptors work coordinately in the interval between these values (mesopic vision). Each mechanism generates a different spectral sensibility. In this work, Citation: Navarrete-de Galvez, E.; the emission spectra of common sources in present public lighting installations are analyzed and Gago-Calderon, A.; Garcia-Ceballos, their normative photopic values translated to the corresponding mesopic condition, which more L.; Contreras-Lopez, M.A.; faithfully represents the vision mechanism of our eyes in these conditions. Based on a common Andres-Diaz, J.R. Adjustment of street urban configuration (ME6), we generated a large set of simulations to determine the ideal light Lighting Parameters from Photopic to point setup configuration (luminance and light point height vs.
    [Show full text]
  • S Selection of Intraocular Lens on the Basis of Light Transmittance Properties
    Eye (2017) 31, 258–272 OPEN Official journal of The Royal College of Ophthalmologists www.nature.com/eye 1 2 2 2 REVIEW The evidence informing XLi, D Kelly , JM Nolan , JL Dennison and S Beatty2,3 the surgeon’s selection of intraocular lens on the basis of light transmittance properties Abstract In recent years, manufacturers and distributors surgical procedure worldwide,1 and the need have promoted commercially available intrao- for such surgery is likely to rise because cular lenses (IOLs) with transmittance proper- of increasing longevity.2 Commercially fi ties that lter visible short-wavelength (blue) available IOLs can vary in terms of material light on the basis of a putative photoprotective (polymethylmethacrylate, polymers, silicone effect. Systematic literature review. Out of or acrylic),3,4 hydrophobicity (hydrophobic vs 21 studies reporting on outcomes following hydrophilic),5 sphericity (aspheric vs spheric)6 implantation of blue-light-filtering IOLs (invol- 1 and light-filtering properties. In this paper, Pharmaceutical & ving 8914 patients and 12 919 study eyes Molecular Biotechnology undergoing cataract surgery), the primary out- we review the evidence germane to the Research Centre, fi come was vision, sleep pattern, and photopro- putative and relative risks and/or bene ts of Department of Chemical & fi Life Sciences, Waterford tection in 9 (42.9%), 9 (42.9%), and 3 (14.2%) implanting IOLs that lter visible short- Institute of Technology, respectively, and, of these, only 7 (33.3%) can be wavelength light (ie, o500 nm), referred to as Waterford, Ireland classed as high as level 2b (individual cohort blue-light-filtering IOLs for the purpose of this study/low-quality randomized controlled trials), review.
    [Show full text]
  • 1 Human Color Vision
    CAMC01 9/30/04 3:13 PM Page 1 1 Human Color Vision Color appearance models aim to extend basic colorimetry to the level of speci- fying the perceived color of stimuli in a wide variety of viewing conditions. To fully appreciate the formulation, implementation, and application of color appearance models, several fundamental topics in color science must first be understood. These are the topics of the first few chapters of this book. Since color appearance represents several of the dimensions of our visual experience, any system designed to predict correlates to these experiences must be based, to some degree, on the form and function of the human visual system. All of the color appearance models described in this book are derived with human visual function in mind. It becomes much simpler to understand the formulations of the various models if the basic anatomy, physiology, and performance of the visual system is understood. Thus, this book begins with a treatment of the human visual system. As necessitated by the limited scope available in a single chapter, this treatment of the visual system is an overview of the topics most important for an appreciation of color appearance modeling. The field of vision science is immense and fascinating. Readers are encouraged to explore the liter- ature and the many useful texts on human vision in order to gain further insight and details. Of particular note are the review paper on the mechan- isms of color vision by Lennie and D’Zmura (1988), the text on human color vision by Kaiser and Boynton (1996), the more general text on the founda- tions of vision by Wandell (1995), the comprehensive treatment by Palmer (1999), and edited collections on color vision by Backhaus et al.
    [Show full text]
  • 17-2021 CAMI Pilot Vision Brochure
    Visual Scanning with regular eye examinations and post surgically with phoria results. A pilot who has such a condition could progress considered for medical certification through special issuance with Some images used from The Federal Aviation Administration. monofocal lenses when they meet vision standards without to seeing double (tropia) should they be exposed to hypoxia or a satisfactory adaption period, complete evaluation by an eye Helicopter Flying Handbook. Oklahoma City, Ok: US Department The probability of spotting a potential collision threat complications. Multifocal lenses require a brief waiting certain medications. specialist, satisfactory visual acuity corrected to 20/20 or better by of Transportation; 2012; 13-1. Publication FAA-H-8083. Available increases with the time spent looking outside, but certain period. The visual effects of cataracts can be successfully lenses of no greater power than ±3.5 diopters spherical equivalent, at: https://www.faa.gov/regulations_policies/handbooks_manuals/ techniques may be used to increase the effectiveness of treated with a 90% improvement in visual function for most One prism diopter of hyperphoria, six prism diopters of and by passing an FAA medical flight test (MFT). aviation/helicopter_flying_handbook/. Accessed September 28, 2017. the scan time. Effective scanning is accomplished with a patients. Regardless of vision correction to 20/20, cataracts esophoria, and six prism diopters of exophoria represent series of short, regularly-spaced eye movements that bring pose a significant risk to flight safety. FAA phoria (deviation of the eye) standards that may not be A Word about Contact Lenses successive areas of the sky into the central visual field. Each exceeded.
    [Show full text]
  • The Eye and Night Vision
    Source: http://www.aoa.org/x5352.xml Print This Page The Eye and Night Vision (This article has been adapted from the excellent USAF Special Report, AL-SR-1992-0002, "Night Vision Manual for the Flight Surgeon", written by Robert E. Miller II, Col, USAF, (RET) and Thomas J. Tredici, Col, USAF, (RET)) THE EYE The basic structure of the eye is shown in Figure 1. The anterior portion of the eye is essentially a lens system, made up of the cornea and crystalline lens, whose primary purpose is to focus light onto the retina. The retina contains receptor cells, rods and cones, which, when stimulated by light, send signals to the brain. These signals are subsequently interpreted as vision. Most of the receptors are rods, which are found predominately in the periphery of the retina, whereas the cones are located mostly in the center and near periphery of the retina. Although there are approximately 17 rods for every cone, the cones, concentrated centrally, allow resolution of fine detail and color discrimination. The rods cannot distinguish colors and have poor resolution, but they have a much higher sensitivity to light than the cones. DAY VERSUS NIGHT VISION According to a widely held theory of vision, the rods are responsible for vision under very dim levels of illumination (scotopic vision) and the cones function at higher illumination levels (photopic vision). Photopic vision provides the capability for seeing color and resolving fine detail (20/20 of better), but it functions only in good illumination. Scotopic vision is of poorer quality; it is limited by reduced resolution ( 20/200 or less) and provides the ability to discriminate only between shades of black and white.
    [Show full text]
  • Reliability of Mesopic Measures of Visual Acuity and Contrast Sensitivity and Their Correlation with Rod and Cone Function in Retinitis Pigmentosa
    UCLA UCLA Previously Published Works Title Reliability of Mesopic Measures of Visual Acuity and Contrast Sensitivity and Their Correlation with Rod and Cone Function in Retinitis Pigmentosa. Permalink https://escholarship.org/uc/item/0hf8f1q5 Journal Ophthalmic research, 63(2) ISSN 0030-3747 Authors Bittner, Ava K Ferraz, Mariana C Publication Date 2020 DOI 10.1159/000503931 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Research Article Ophthalmic Res Received: July 20, 2019 DOI: 10.1159/000503931 Accepted after revision: October 6, 2019 Published online: December 5, 2019 Reliability of Mesopic Measures of Visual Acuity and Contrast Sensitivity and Their Correlation with Rod and Cone Function in Retinitis Pigmentosa a, b b Ava K. Bittner Mariana C. Ferraz a Department of Ophthalmology, Stein Eye Institute, University of California, Los Angeles, Los Angeles, CA, USA; b College of Optometry, Nova Southeastern University, Fort Lauderdale, FL, USA Keywords photopic conditions were significantly related to reduced Retinitis pigmentosa · Scotopic · Visual acuity · Contrast cone-mediated scotopic sensitivity (p = 0.038). Significant sensitivity · Cone sensitivity · Rod function predictors of the CCT ratio of S-cone to M- and L-cone sensi- tivity were mesopic VA (p = 0.038) and absence of AdaptDx rod function (p = 0.008). Test-retest 95% coefficients of re- Abstract peatability were not significantly different when comparing Background: Mesopic conditions elicit both rod and cone between photopic and mesopic tests of VA (0.16 and 0.12 responses, and they are more commonly encountered in logMAR, respectively) or CS (0.21 and 0.24 logCS, respective- daily life than are scotopic conditions; yet visual function ly).
    [Show full text]
  • On the Trigonometric Descriptions of Colors
    Applied Physics Research; Vol. 8, No. 3; 2016 ISSN 1916-9639 E-ISSN 1916-9647 Published by Canadian Center of Science and Education On the Trigonometric Descriptions of Colors Jiří Stávek1 1 Bazovského 1228, 163 00 Prague, Czech republic Correspondence: Jiří Stávek, Bazovského 1228, 163 00 Prague, Czech republic. E-mail: [email protected] Received: March 3, 2016 Accepted: April 14, 2016 Online Published: April 19, 2016 doi:10.5539/apr.v8n3p5 URL: http://dx.doi.org/10.5539/apr.v8n3p5 Abstract An attempt is presented for the description of the spectral colors using the standard trigonometric tools in order to extract more information about photons. We have arranged the spectral colors on an arc of the circle with the radius R = 1 and the central angle θ = π/3 when we have defined cos (θ) = λ380/λ760 = 0.5. Several trigonometric operations were applied in order to find the gravity centers for the scotopic, photopic, and mesopic visions. The concept of the center of gravity of colors introduced Isaac Newton. We have postulated properties of the -18 long-lived photons with the new interpretation of the Hubble (Zwicky-Nernst) constant H0 = 2.748… * 10 kg kg-1 s-1, the specific mass evaporation rate (SMER) of gravitons from the source mass. The stability of international prototypes of kilogram has been regularly checked. We predict that those standard kilograms due to the evaporation of gravitons lost 8.67 μg kg-1 century-1. The energy of long-lived photons was trigonometrically decomposed into three parts that could be experimentally tested: longitudinal energy, transverse energy and energy of evaporated gravitons.
    [Show full text]
  • New Mesopic Phenomenon on Color Vision Nikolai Sergienko* Department of Ophthalmology, National Medical Academy of Postgraduate Education, Kiev, Ukraine
    New Frontiers in Ophthalmology Research Article ISSN: 2397-2092 New mesopic phenomenon on color vision Nikolai Sergienko* Department of Ophthalmology, National Medical Academy of Postgraduate Education, Kiev, Ukraine Abstract Purpose: To present a new phenomenon with color objects and its principle hypothetical interpretation. Methods: Thirty-five volunteers with normal color vision were included in the study. Red and blue objects placed on different color fields under condition of varied illumination were given to determine whether fixated by glance object seems different as compared with adjustment ones. Visual perception was studied during the prolong fixation of the red and blue objects on their blue and red backgrounds respectively. Results: Under condition of the mesopic illumination the reds objects projected on the fovea was perceived as desaturated light spot, whereas blue objects seemed more saturated. A zone of the brightness altering of the fixated objects subtended an area corresponding to the fovea diameter. After the prolong fixation of the blue and red objects faded and disappeared one by one. The red field became dark-gray, the blue field sustained its hue. Conclusion: The changed and distorted visual perception in mesopic vision may be explained by mutual antagonistic relationship between the rod and cone systems regulated two competing parts of the vegetative nervous system. Introduction paper (red, rose, yellow, green blue, white and black) 120-200 mm in size were prepared. Six round pieces of the red or blue paper about 10 An explanation of the nature of phenomenons like bubbles in a mm in diameter were glued to these paper sheets. Each sheet served boiling water, an appearance of the rainbow or thunder in a cloudy as a target picture.
    [Show full text]
  • The Circadian Effect Versus Mesopic Vision Effect in Road Lighting
    applied sciences Article The Circadian Effect Versus Mesopic Vision Effect in Road Lighting Applications Min Li 1, Peiyu Wu 2, Jianhua Ding 2,3, Qi Yao 2,* and Jiaqi Ju 4,* 1 Institute for Electric Light Sources, Fudan University, Shanghai 200433, China; [email protected] 2 College of Architecture and Urban Planning, Shenzhen University, Shenzhen, Guangdong 518060, China; [email protected] (P.W.); [email protected] (J.D.) 3 School of Architecture, Northeastern University, Liaoning 110004, China 4 School of Science, Shanghai Institute of Technology, Shanghai 201418, China * Correspondence: [email protected] (Q.Y.); [email protected] (J.J.) Received: 11 August 2020; Accepted: 29 September 2020; Published: 6 October 2020 Featured Application: This work clarifies light sources’ circadian effect and mesopic vision effect in road lighting for the first time, and guides circadian and efficient outdoor lighting application. Abstract: Several models on the circadian effect have been applied to indoor circadian lighting design, but applications in road lighting have not yet been clarified. Based on existing models and circadian research, we examined equivalent melanopic lux (EML), circadian light (CLA), and circadian stimulus (CS) representing the circadian effect and the S/P ratio representing the mesopic vision effect, among a dataset of light sources at photopic adaptation illuminance values of 1, 3, 10, 30, and 100 lx. The results show that the S/P ratio correlates with EML and CS (or CLA) much stronger than it correlates with color temperature. The EMLs of light sources are below 50 EML in mesopic vision, and the CSs of most light sources are below or around the threshold value of 0.05.
    [Show full text]
  • Visual Pigment Evolution and the Paleobiology of Early Mammals
    Visual pigment evolution and the paleobiology of early mammals Dissertation zur Erlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) im Fach Biologie eingereicht an der Mathematisch-Naturwissenschaftlichen Fakultät I der Humboldt-Universität zu Berlin von Dipl.-Biol. Constanze Bickelmann Präsident der Humboldt-Universität zu Berlin Prof. Dr. Jan-Hendrik Olbertz Dekan der Mathematisch-Naturwissenschaftlichen Fakultät I Prof. Dr. Andreas Herrmann GutachterInnen: 1. Prof. Dr. Johannes Müller 2. PD Dr. Frieder Mayer 3. Prof. Belinda S.W. Chang Tag der mündlichen Prüfung: 30.06.2011 With love, to Leon and Gaia. Contents Contents 1 Abstract in English 4 Abstract in German 6 List of Figures 8 List of Tables 9 1. Introduction 10 1.1. The origin and evolution of mammals 10 1.1.1. The origin of mammals 10 1.1.2. Nocturnality – a prerequisite of endothermy 11 1.1.3. Evolution of therapsids and the acquisition of endothermy 12 1.2. Enigmatic monotremes, the most basal mammals 14 1.2.1. Monotremes 14 1.2.2. Tachyglossus aculeatus, the short-beaked echidna 16 1.3. Rhodopsin, a vertebrate visual pigment 17 1.3.1. The visual signaling cascade 17 1.3.2. Rhodopsin, a G protein-coupled receptor 20 1.4. Ancestral sequence reconstruction and selective constraint analyses 22 1.4.1. Resurrecting ancient genes 22 1.4.2. In vitro expression systems in vision research 24 1.4.3. Selective constraint analyses 25 1.5. Objectives of this thesis 26 2. Material and methods 28 2.1. In the molecular lab 28 2.1.1. Genomic DNA isolation 28 2.1.2.
    [Show full text]
  • Development of Visual Performance Based Mesopic Photometry
    Helsinki University of Technology Lighting Laboratory Espoo 2005 Report 36 DEVELOPMENT OF VISUAL PERFORMANCE BASED MESOPIC PHOTOMETRY Marjukka Eloholma Dissertation for the degree of Doctor of Science in Technology to be presented with due permission of the Department of Electrical and Communications Engineering for public examination and debate in Auditorium S4 at Helsinki University of Technology (Espoo, Finland) on the 21st of October at 12 o’clock. Helsinki University of Technology Department of Electrical and Communications Engineering Lighting Laboratory Helsinki University of Technology Lighting Laboratory P.O. Box 3000 FI-02015 TKK FINLAND Tel. +358 9 4514971 Fax. +358 9 4514982 http://www.lightinglab.fi © Marjukka Eloholma and Helsinki University of Technology ISBN 951-22-7867-7 ISBN 951-22-7868-5 (pdf) ISSN 1455-7541 ISSN 1795-9039 (pdf) Otamedia Oy Espoo 2005 Abstract HELSINKI UNIVERSITY OF TECHNOLOGY ABSTRACT OF DOCTORAL DISSERTATION P. O. BOX 1000, FI-02015 TKK http://www.tkk.fi Author Marjukka Eloholma Name of the dissertation Development of visual performance based mesopic photometry Date of manuscript 12.9.2005 Date of the dissertation 21.10.2005 Monograph Article dissertation (summary + original articles) Department Electrical and Communications Engineering Laboratory Lighting Laboratory Field of research Illuminating Engineering Opponent(s) Dr Pieter Walraven Supervisor Prof Liisa Halonen A bstract This work started by investigating the applicability of the photopic V(l) function to predict visual task performance at mesopic light levels. Visual acuity and pedestrian visibility experiments were carried out in varied lighting and viewing conditions. The results indicated the inadequacy of photopic photometry to characterise the response of peripheral vision at low mesopic light levels.
    [Show full text]