LED Professional Review - LED professional Review (LpR) - Issue 56

www.led-professional.com

Trends & Technologies for Future Lighting Solutions

ISSN 1993-890X

Review

Research: Lamp Quality & Flicker Tech-Talks BREGENZ: Francis Wong Application: Medical Fiber Optics Light Sources Reliability: E-Caps & Optocouplers in LED Drivers

July/Aug 2016 | Issue

LpR

56

4

CATEGORY EDITORIAL

Open Innovation in Lighting Last month Luger Research e.U. organized a workshop on the topic of Pragmatic Open Innovation, led by Prof. Sergei Ikovenko. The workshop offered participants the chance to discuss the latest methodologies for innovation and problem solving with a leading expert on the subject of systematic innovation.

Reliability and Life-time, the main topic of this current issue, is highly driven by the quality of design-in and therefore innovative approaches and problem solving capabilities play an important role in designing long-lasting, high-quality products and systems. Consequently, Design for Six-Sigma (DFSS) is a key process element for developing new generations of products.

For those not familiar with the term, open innovation is a paradigm that assumes that companies can and should use external as well as internal ideas and internal and external paths to market, as the firms move to advance their technology. Systematic innovation is more of a scientific approach to open innovation execution that uses analytical tools to identify root causes of an innovation challenge and then finds functionally related practical solutions that can be adapted.

Systematic Open Innovation is based on nine, highly valuable tenets, namely: Use a scientific problem solving approach and don’t simply rely on inspiration. Focus on functions, not design components. Address key problems, not initial problems. Resolve contradictions; don’t compromise. Utilize global knowledge to complement your in-house expertise. Adapt existing solutions whenever possible. Only improve features the customer will pay for, not all features.

Select evolutionary winners, not losers. Innovate the right product, not every product.

As a consequence of focusing on functions, rather than components, we can use function knowledge to apply the Function-Oriented Search (FOS), a problem-solving tool based on identifying existing technologies worldwide using function criteria. FOS is founded on a generalization of functions that allows for expanding the search of applicable technical solutions (not just in the lighting domain). This tool is more effective when searching in leading fields such as: Medicine, Aerospace, Automotive, Military, Toys, and Biology. For example, Intel found a solution for a high-tech chip production problem in the area of Champagne manufacturing.

The nine tenets should guide us when developing new lighting products and systems. Due to the short development cycles, pragmatic and systematic development processes are required to guarantee the needed quality. These new approaches in the methodologies and the new way of thinking open up borders, and the world-wide search in different domains may help to speed up processes and support the quality of designs.

In this issue we highlight quality concerns for LED Drivers, LED Lamps and Flicker. There are also articles that touch on the topics of recycling, circular economy and fiber optics in medical applications. In our Tech Talks Bregenz, Francis Wong from Lextar states his views on the development of quality in lighting.

If you would like to read more about systematic open innovation in our publications, please let us know.

Yours Sincerely,

Siegfried Luger

Publisher, LED professional Event Director, LpS 2016

© 2016 Luger Research e.U. | Issue 56

CONTENT

OVERVIEW

6

COMMENTARY

08

L ifetime And Reliability

by Dr. Günther Sejkora, items & LED professional

REGULARS

TECH-TALKS BREGENZ

34

Francis Wong, AVP Lighting Business Unit, Lextar

04 08 10 22 23 26

EDITORIAL COMMENTARY PRODUCT NEWS STANDARDIZATION NEWS RESEARCH NEWS EVENT NEWS

82

ABOUT | IMPRINT

compiled by Dr. Günther Sejkora, LED professional

RESEARCH

40 Quality and Health Aspects of LED Lamps for the European Residential Lighting Market

by Prof. Dr. Georges Zissis, Paul Sabatier University of Toulouse

50 Flicker Beyond Perception Limits - A Summary of Lesser Known Research Results

by Dr. Walter Werner, Werner Consulting

TECHNOLOGIES 58 Concepts to Overcome Lifetime Issues of LED Drivers

by Maggie Nadjmi, SL Power Electronics

HIGHLIGHT

50

QUALITY

62

TM-30 or the Quest for New Metrics to Measure Light Color Quality

by Arno Grabher-Meyer, LED Professional

APPLICATIONS

Flicker Beyond Perception Limits A Summary of Lesser Known Research Results

by Dr. Walter Werner, Werner Consulting

68

High-End White Light Sources Fiber Optics Technology for Medical Applications

by Holger Laabs, Oliver Mehl & Henning Rehn, Osram

SPECIAL

74

LED Lamps Recycling Technology for a Circular Economy

by A. Gassmann et al., Fraunhofer IWKS & Technische Universität Darmstadt

ADVERTISING INDEX FUTURE LIGHTING SOLUTIONS 1 DIGI-KEY 2 ELECTRONICA 3 FUTURE LIGHTING SOLUTIONS 5 GUZHEN LIGHTING EXPO 7 LEDLINK 9 EPISTAR 11 RECOM 13 MÜHLBAUER 15 EUROLIGHTING 17

Issue 56 | © 2016 Luger Research e.U.

REFOND 19 LEDFRIEND 20 CREE 20 GL OPTIC 22 INFINEON 25 LOT QUANTUM DESIGN 26 LED PROFESSIONAL SYMPOSIUM 27 INSTRUMENT SYSTEMS 39 LED CHINA 48 KDG -OPTICOMP 53

INTERLIGHT MOSCOW 57 RUSALOX 61 TOPSIL 61 HK INT. LIGHTING FAIR 65 ILLUMINOTRONICA 67 PHOTOPTICS 71 CHINA INT. OPTOELECTRONICS EXPO 73 MERCK 81 LED PROFESSIONAL REVIEW 83 ACEVEL 84