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Commentary | Sep 21, 2015

Creating Growth for the Lighting Industry in Europe with new Opportunities

Diederik de Stoppelaar How to create growth for the lighting industry in Europe was the challenge in the strategy workshop of LightingEurope in May. With the economic climate improving, various opportunities around LED technology have been defined including lighting applications such as smart lighting or human centric lighting. Read more »

Research | LpR Article

Direct Current (DC) Supply Grids for LED Lighting

Typical AC lamp driver Since many alternative energy sources as well as electronics and controls technologies are based on DC current, DC grids have been investigated more intensely in the last decade. DC grids with a centralized AC/DC conversion have proven to be advantageous in server farms. While LED lighting is also a DC current related technology, an obvious choice would be to use DC grids for them. Prof. Eberhard Waffenschmidt from the Cologne University of Applied Science in conjunction with Philips Research presents the results of an office building DC lamp system installation with photovoltaic (PV) support. Read more »

Technology | Sep 08, 2015

Background Information on the Luxeon C LED Family from Lumileds

All four Luxeon C LEDs shown are based on very different technologies, but they have a common identical focal length and low-dome design to prevent cross-talk In an exclusive interview, Rahul Bammi, Vice President of Marketing & Product Management at Lumileds, and David Cosenza, Product Manager for the Luxeon Color LED Family, disclosed some background information on why this new product family was designed and why the very specific, new, and unique properties were implemented. Read more »

Commentary | Sep 07, 2015

IYL 2015 - Light is Live, Light is Culture, Solid State Light is Progress

Joseph J. Niemela On 20 December 2013, the United Nations General Assembly proclaimed 2015 as the International Year of Light and Light-based Technologies (IYL 2015). This was the culmination of a long and concerted effort by a large consortium of scientific bodies, working together with the United Nations Educational, Scientific and Cultural Organization (UNESCO), where the initiative was adopted by its General Conference in November of the same year. Read more »

Tech-Talks Bregenz

Tech-Talks BREGENZ - Ewing Liu, Everlight, Technical Marketing Manager

Ewing Lui LED manufacturers have different strategies and approaches for their product portfolios depending on from which business they are originated. Everlight has a very long experience in optoelectronics as packaging company. Accompanied by Christopher Keusch, Director of Lighting Business EMEA, Ewing Liu, Technical Marketing Manager at Everlight, talks about about the background of the company, the worldwide strategies and upcoming techologies. Read more »

Interview

Exclusive Interview: Nobel Prize and Global Energy Prize Winner Prof. Shuji Nakamura

Shuji Nakamura On June 19th, 2015 Nobel and Millennium prize winner, Professor Shuji Nakamura was awarded the Global Energy Prize in St. Petersburg, Russia. The Global Energy Prize is given to researchers in the field of energy efficiency and renewable technologies on a global scale. During the Global Energy Prize Event in St. Petersburg, Professor Nakamura gave an exclusive interview about the developments and future of solid-state lighting. Siegfried Luger, CEO of Luger Research, Event Director of the LpS 2015 and Publisher of LED professional, talked with Professor Nakamura about LED substrate technologies, violet and ultra-violet emitters, nano-technologies, OLEDs and laser technologies. Read more »

Research | LpR Article

A Self-Compensation Approach for Maintaining the Chromaticity Coordinates of Phosphor Converted LEDs Upon Temperature Variations

Line scans for the temperature profiles along the vertical direction of the LED package Solid-state light sources for general illumination applications are currently becoming more and more popular. Maintaining chromaticity coordinates over temperature is a challenge. Wolfgang Nemitz, Franz P. Wenzl, Susanne Schweitzer, Christian Sommer, Paul Hartmann from the Institute for Surface Technologies and Photonics at Joanneum Research, and Paul Fulmek and Johann Nicolics from the Institute of Sensor & Actuator Systems of the Vienna University of Technology investigated this issue and propose a promising new solution. Read more »

Commentary | Aug 24, 2015

LED Innovation will Offer a Human-Centric Smart Lighting Platform Enabling Enterprise IOT

Frank Harder After a century of analog electrical light, the lighting industry has spent the last decade in transition to digital light sources; LEDs, sought to replace the tungsten filament. LEDs are now embedded in all market segments in both residential and commercial applications. The predictions of early LED pioneers such as Dr. Roland Haitz have become reality today: more lumens delivered at a lower cost with increasing reliability and quality of light attributes. As a result, the world of electrical light has accepted that LEDs will be its primary light source and contribute to saving significant electrical energy, reducing carbon emissions and providing increased safety and comfort in our homes, at work and even while commuting in traffic. Read more »

Tech-Talks Bregenz

Tech-Talks BREGENZ - Daniel Doxsee, Nichia Europe, Deputy Managing Director

Daniel Doxsee Nichia is arguably the company with the longest history of manufacturing white LEDs. Recently, however, new competitors especially from China, have started challenging Nichia’s market share. Nichia’s role in strategic and technical solid-state lighting issues and its past, present and future were discussed with Daniel Doxsee, Nichia Chemical Europe’s Deputy Managing Director. Read more »

Commentary

A Confusing Situation that demands Solutions: Performance Specification

Jacob Nuesink Product innovations are not the only consequence of recent advancements in the lighting market. These changes must be accompanied by a realization that the “old” methods for specifying the performance of lighting products no longer fully apply and need to be amended. From the perspective of DEKRA, an organization specialized in the testing and certification of SSL products, the current situation shows the following picture: Read more »

White Paper | Technology | Mar 30, 2015

TRIAC Dimmable, Isolated LED Driver with High Power Factor Needs No Opto-Isolators

TRIAC Dimmable 20W Offline LED Driver Using the LT3799 As environmental concerns over traditional lighting in-crease and the price of LEDs decreases, high power LEDs are fast becoming a popular lighting solution for offline applications. In order to meet the requirements of offline lighting - such as high power factor, high efficiency, isolation and TRIAC dimmer compatibility - prior LED drivers used many external discrete components, resulting in cumbersome solutions. By Wei Gu Applications Engineering Section Leader at Linear Technology demonstrates how new solutions reduce complexity while improving performance. Read more »

LpR Feature | Technologies | Mar 12, 2015

Practical Estimation of Measurement Times in Goniospectroradiometry and Goniophotometry

Operating principle to measure luminous flux using a turning-detector type goniometer The angle-dependent characterization of LED modules and lights often raises the question about typical measuring times. In particular, the comparison of spectrometer-based systems with photometer-based systems is of considerable interest here. Dr. Günther Leschhorn, product manager for spectroradiometers and SSL measurement equipment from Instrument Systems GmbH, considers different measurement set-ups in a study and makes recommendations for various application cases. Read more »

Tech-Talks Bregenz | Jan 30, 2015

Tech-Talks BREGENZ - Prof. Mehmet Arik, University of Ozyegin, Turkey

Prof. Mehmet Arik Thermal management is an ongoing challenge and a topic of continued research and innovation. Prof. Mehmet Arik from the University of Ozyegin, Istanbul, also known as the ‘Edison of the 21st Century’, discussed core thermal issues and new innovative solutions, trends in cost reduction, packaging and how we can learn from electronics to achieve better thermal management of the system as a whole. Read more »

Resources | LpR Article | Tech-Talks Bregenz | Measurement | Jan 09, 2015

Tech-Talks BREGENZ - Prof. Jiangen Pan, Everfine, Founder & CTO

Prof. Jiangen Pan With ever-increasing demands on measurement equipment, it is becoming essential to meet user needs by providing combined solutions, which address optical, electrical and thermal issues. Prof. Jiangen Pan CEO, Founder and Chief Scientist at Everfine Institute of Optoelectronics, provided valuable insights on new compact solutions for LED measurements, his views and contributions towards global standards and how he works in his “thinking laboratory”. Read more »

Resources | LpR Article | Tech-Talks Bregenz | Market | SSL

Tech-Talks BREGENZ - Dietmar Zembrot, LightingEurope, President

Dietmar Zembrot Rapidly growing technologies and emerging market trends in solid-state lighting encourage new innovations largely driven by applications and technological developments. Dietmar Zembrot, President of LightingEurope and Managing Director of TRILUX Group, shared his insights on changing value chains and business models, Europe’s competitiveness and the main driving forces for current SSL technologies. Read more »

FEATURED

Emergency Lighting Just Got Smarter

Emergency Lighting Just Got Smarter NEW NOW: OSRAM’s standalone solution for emergency lighting testing, reporting and maintenance. Meet the QBM DALI EL-T CONV, a converter transforming existing DALI emergency luminaires into wireless ones, all controlled by the same lighting system. Its benefits? Allowing you to design all the ... Read more »

FEATURED

Continuous versus Discrete Calibration Sources: Consideration for Use

Continuous versus Discrete Calibration Sources: Consideration for Use Rapid advancements in the field of solid-state lighting have presented opportunities for the use of LED-based systems for calibrations typically performed with lamp-based sources. Their highly efficient and long-lived performance, rapid power up, and compact size have made LED-based sources an ... Read more »

FEATURED

LUXTECH Offers First Compelling Flex Modules Designed to Replace Traditional Rigid Modules: LUXroll (UL Listed)

LUXTECH Offers First Compelling Flex Modules Designed to Replace Traditional Rigid Modules:  LUXroll (UL Listed) The Indirect Costs of Using Rigid Boards Make Switching to Flexible LED Modules a Compelling Choice. Read more »

EDITORIAL

New LUXEON Rubix Cyan LED Enables 96-98 CRI Across CCT Range in Color Driven Solutions for Entertainment, Stage, and Studio

New LUXEON Rubix Cyan LED Enables 96-98 CRI Across CCT Range in Color Driven Solutions for Entertainment, Stage, and Studio Lumileds added cyan, its eighth color, to the LUXEON Rubix high-power LED family enabling multi-color driven systems to produce very high CRI white light that is so important in entertainment lighting. Adding the cyan LED fills a significant wavelength gap between blue and green in a system and ... Read more »

EDITORIAL

New date: Light + Building Autumn Edition 2022

New date: Light + Building Autumn Edition 2022 Frankfurt am Main, January 10, 2022. As the pandemic situation continues to develop very dynamically, Messe Frankfurt is postponing the world's leading trade fair for light and building technology to autumn 2022. Last December, intensive discussions with customers and cooperation partners had ... Read more »

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