www.led-professional.com ISSN 1993-890X Review LpR The Global Information Hub for Lighting Technologies March/April 2019 | Issue 72 Interview: Scott Wade Research: Freeform Microlens Arrays Technologies: Smart Buildings DC Grids www.FutureLightingSolutions.com Applications: Office Lighting Controls May 19 – 23, 2019 2019 LIGHTFAIRVisit Internationalus at our stand! Booth #1349 We look forward to seeing you. FLS_CoverCorner_LED Pro_Lightfair.indd 1 2019-02-21 9:04 AM CATEGORYEDITORIAL 4 Connected Miniaturized Lighting In this issue of the LED professional Review (LpR) we want to catch up on the current topics in the lighting world again and also touch on future development and some of the main trends. One topic that affects lighting technologies is progressing miniaturization. The control electronics, in particular, are still too heavy in relation to the LEDs and determine the form factors. There are two main directions concerning this topic that are dealt with: On the one hand, Micro-LEDs are becoming a rapidly growing segment and optimized optics are required for this purpose. On the other hand, there is the approach of "centralizing" the electronics and supplying the energy via a DC grid. The topics in the automotive sector are also related and offer interesting solutions for miniaturization. The second major area, in addition to miniaturization, is networking and, in a broader sense, Smart/AI controlled systems. This edition also concerns itself with EnOcean technology, a method of transmitting data without energy storage and the DALI standard, an interface that is developed, promoted and supported worldwide by the DiiA organization. The DiiA (Digital Illumination Interface Alliance) will also host the first DALI Summit in Bregenz on September 25th, 2019, which will take place parallel to LpS 2019 and TiL 2019. We're sure you'll enjoy this edition and look forward to your feedback! Yours Sincerely, Siegfried Luger Publisher, LED professional © 2019 Luger Research e.U. | Issue 72 CONTENT OVERVIEW 6 COMMENTARY REGULARS What the Heck is Future-Proof? 04 EDITORIAL 08 by Arno Grabher-Meyer, LED professional 08 COMMENTARY 10 COMPONENT NEWS TECH-TALKS BREGENZ 20 APPLICATION NEWS 25 RESEARCH NEWS Dr. Scott Wade, DiiA 34 28 ORGANIZATION NEWS compiled by Dr. Guenther Sejkora, LED professional 32 REGULATION NEWS RESEARCH Semi-Empirical Characterization of Freeform Microlens Arrays 42 by Oscar Fernández et al., CSEM & ANSYS 74 ABOUT | IMPRINT Thermal and Optical Challenges for SSL in Automotive Applications 50 by Umut Zeynep Uras et al., Ozyegin University & FARBA Corp. TECHNOLOGIES LED Lighting Systems in Smart Buildings with DC Microgrids 60 by Carsten Moellers, Abalights APPLICATIONS Technologies for Shared Office Space 66 by Matthias Kassner, EnOcean GmbH HIGHLIGHTS Semi-Empirical Characterization of Freeform Microlens Arrays Thermal and Optical Challenges for SSL in Automotive Applications 42 50 by Oscar Fernández et al., CSEM & ANSYS by Umut Zeynep Uras et al., Ozyegin University & FARBA Corp. ADVERTISING INDEX FUTURE LIGHTING SOLUTIONS 1 M.A.L. EFFEKT TECHNIK 17 TIL 55 LUMILEDS 2 CREE 21 HKTDC HK INT. LIGHTING FAIR (SPRING) 59 FULHAM 3 FLS-NICHIA 27 LIGHT FAIR INTERNATIONAL 65 EVONIK 5 FLS-SIGNIFY 29 LED EXPO THAILAND 69 FUTURE LIGHTING SOLUTIONS 7 FLS-LUMILEDS 31 CREE 72 LUMINUS DEVICES 9 TÜV SÜD 33 BRIDGELUX 72 INPOTRON 11 DIIA/DALI 41 GUANGZHOU INT. LIGHTING EXHIBITION 73 M.A.L. EFFEKT TECHNIK 12 INSTRUMENT SYSTEMS 45 LPR 75 GL OPTIC 17 LPS 49 WÜRTH 76 Issue 72 | © 2019 Luger Research e.U. COMMENTARY CRITICAL THOUGHTS ON FUTURE-PROOFNESS 8 WHAT THE HECK IS FUTURE-PROOF? The first time the question about future features are added and the technology proofing LED systems came up seriously, behind the scene is changed. Upgrading to was at LightFair 2018 when Siegfried Luger a smarter system with a change to LEDs interviewed Patrick Durand. Since then, it has seems to be a no-brainer. While the question been the buzzword throughout the industry. of whether the potential of these new systems Discussions concerning future proofing are is fully utilized by the operator arises, it is often limited to wireless communications, important to ask: Which attributes make IoT and some type of AI. But isn't there more? such systems future-proof? The term future proof usually implies that any At the other end of the scale, the availability necessary measure from replacing in part or as of a replacement in case of a failure may be a whole to upgrading or adding new features considered future proof. Solutions like using should be possible with minimum (financial) Zhaga compliant components seem to be the effort. But future proofness may concern different simple answer. Unfortunately, this isn't so! Arno Grabher-Meyer properties of the product or system depending What happens when an LED module in an Arno originally studied biology on the stakeholder. Users, installers and owners environment has to be replaced after 10,000 at the University of Innsbruck. may all have different views. The requirements hours because it fails? The replacement He was involved in several are also different for different applications. So, might be more efficient, or not exactly hit let's walk through some of the different aspects. the color point of the original LEDs, etc. scientific documentation But if we assume we are lucky enough to find projects for the Alpenzoo Today's discussion about future-proofness, an identical module or another acceptable (Alpine Zoo) and a documentary in fact, targets only a small fraction of all indoor solution with almost identical dimming film for the BBC with installations because they often don't take curves, is the problem solved? No. In the advantage of LEDs controllability. This segment beginning it works well, but what happens Sir David Attenborough. is very important for the industry as it is the after a year or two? The degradation of the He worked as a freelance high-priced part of their business that, if new module is certainly going to be different photographer for the triggered correctly, promises growth and has from the further degradation of the older Inatura (Museum for Nature, the potential to free the industry from the current module(s). Is this truly future-proof? dilemma of not being as profitable as required. Humans and Technology) But how about users, installers and owners? But it could be even worse. At LpS 2018, in Dornbirn. DI Markus Heckmann from Osram showed in In many applications, the clients either don't his lecture "Influence of Converter Topology on He earned his engineering recognize a (monetary) advantage or value. the System Interactions" that the characteristics degree through continued Additionally, while the industry frantically tries of LEDs from generation to generation my education and in 2005 went to convince the consumer of their smart change in a way that some driver topologies to work for Luger Research. concepts, there is still a lot of skepticism - that worked perfectly with the original LEDs justified or not. While people unquestioningly may not be able to drive the updates Here Arno worked on several use Facebook and other social media as correctly. This isn't future-proof, is it? LED lighting research projects well as the Google and Siri systems that in conjunction with the can compromise privacy and data safety, Finally, another often ignored aspect: LEDs Austrian Competence questions arise when it comes to smart are considered non-toxic, but LEDs, in fact, lighting & IoT. Is it necessary to provide all my contain precious materials that are crucial Center Light. data to a cloud system? Isn't it sufficient to for many products. Unfortunately, LEDs and His job as Chief Editor started process just my local data in-house? Who LED products are, in many cases, landfilled. else can access to my data and how will it be Especially as these materials are becoming in 2006 when Luger Research used? Is my data safe? Is my system safe or scarce, this isn't sustainable and rarely initiated LED professional. can it be hacked? Can my sensors be used environmentally friendly, and hence also Part of this multi-faceted for surveillance in the style of "Big Brother"? cannot be described as future-proof. job is being responsible for How is future-proofness to be seen in this light? A coordinated recycling program for LEDs as proposed in LightingEurope's Circular the editorial content of the In outdoor applications, especially public Economy Program is therefore urgently magazine and online news. (street) lighting, the situation seems to be needed. I believe we should consider all different. Remote monitoring of the lighting aspects and think about future-proofness in equipment is not really new. The "customer" a bigger context! is already used to it. For them, some new A.G-M. Issue 72 | © 2019 Luger Research e.U. NEWS COMPONENTS 10 Lumileds Unveils Luxeon New Mid-Power Cree Announces Best- Flash 9X with Spectral UV-LED With Quartz in-Class Horticulture Pure Technology Window from Vishay Efficiency with New Red Lumileds reasserted its market leading Vishay Intertechnology, Inc. introduced XLamp LEDs position in camera flash LEDs while at Mobile a ceramic mid power ultraviolet (UVC) World Congress by introducing the Luxeon emitting diode for sterilization, sanitation, Cree, Inc. announces the next-generation Flash 9X with Spectral Pure Technology LED and purification applications. Featuring a XLamp® XP-E2 Photo Red (660 nm) and Far that produces photos with the finest color quartz window, the Vishay Semiconductors Red (730 nm) LEDs, delivering breakthrough quality. Noted for its small form factor VLMU35CM00-280-120 delivers an performance for horticulture applications. (1.4x1.4 mm chip scale package), this robust extremely long lifetime in a compact The new Red XP-E2 LEDs provide a drop-in LED is ideally suited to produce photos with 3.5x3.5x1.2 mm surface-mount package.