Articles & Interviews

Interview
Exclusive Interview: Nobel Prize and Global Energy Prize Winner Prof. Shuji Nakamura
Exclusive Interview: Nobel Prize and Global Energy Prize Winner Prof. 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 »
Technology | Sep 07, 2015
Background Information on the Luxeon C LED Family from Lumileds
Background Information on the Luxeon C LED Family from Lumileds 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 »
Tech-Talks Bregenz | Interview | Nov 23, 2015
Tech-Talks BREGENZ - Andreas Weisl, SSC Europe, Vice-President
Tech-Talks BREGENZ - Andreas Weisl, SSC Europe, Vice-President Seoul Semiconductor has more than 20 years of experience in semiconductor manufacturing and invests more than 10% of its annual revenue in LED research and development. On average, Seoul Semiconductor applies for more than 600 patents every year. Currently, the company holds more than 10,000 LED patents, including patents in core LED technologies such as Acrich, Acrich MJT, nPola, TV Direct Backlight Technology, UV, and many more. Seoul Semiconductor’s extensive patent portfolio in LED technology includes epitaxial growth, fabrication, packaging, and system application of LED technology. LED professional talked with Andreas Weisl, Vice-President of Seoul Semiconductor Europe GmbH about their business, technologies and solutions. Read more »
Interview | News-Spot | Nov 25, 2015
Interview with Nick Farraway, Vice President EMEA at Cree
Interview with Nick Farraway, Vice President EMEA at Cree Cree, Inc. provides lighting-class light emitting diode (LED), lighting, and semiconductor products for power and radio-frequency (RF) applications in the United States, China, Europe, South Korea, Japan, Malaysia, Taiwan, and internationally. Its Lighting Products segment offers LED lighting systems and bulbs for use in settings, such as office and retail space, restaurants and hospitality, schools and universities, manufacturing, healthcare, airports, municipal, residential, street lighting and parking structures, and other applications This segment sells its products to distributors, retailers, and customers. The company’s LED Products segment provides blue and green LED chip products for use in various applications, including video screens, gaming displays, function indicator lights and automotive backlights, headlamps, and directional indicators. It also offers XLamp LED components and LED modules for lighting applications; and surface mount and through-hole packaged LED products for video, signage, general illumination, transportation, gaming, and specialty lighting applications. Read more »
Tech-Talks Bregenz | Dec 01, 2015
Tech-Talks BREGENZ - Dr. Jy Bhardwaj, Lumileds, CTO
Tech-Talks BREGENZ - Dr. Jy Bhardwaj, Lumileds, CTO Dr. Jy Bhardwaj, CTO at Lumileds, held a keynote speech at the 5th LED professional Symposium +Expo (LpS 2015) on September 22nd in Bregenz. He talked about “Trends and Challenges for System Integration” and pointed out further steps and phases of how lighting technologies will evolve. Arno Grabher-Meyer and Siegfried Luger talked with Dr. Bhardwaj about his view on embedded lighting, color LED technologies, substrate and light source technologies. Read more »
LpR Article
3-Pad LED Flip Chip COB
3-Pad LED Flip Chip COB Wafer level packaging and flip chip design are the most recent trends in LED manufacturing and packaging. These LED types are perfectly suited for producing COB modules. This combination already promises better thermal performance than standard SMD package based products. However, there is still room for improvements. Pao Chen, Director of Research and Development at Flip Chip Opto shows how a 3-pad flip chip LED further reduces thermal resistance, allows higher power and can help to reduce costs. Read more »
Commentary | Feb 15, 2016
Design Beyond Traditional Form Follows Function
Design Beyond Traditional Form Follows Function Today design is omnipresent. But what is design? “Design” was first coined by the American architect, Louis Sullivan, to mean that the style of architecture should reflect its purpose; applicable for buildings and constructions and later on attributable to products and objects. Read more »
Tech-Talks Bregenz | Feb 15, 2016
Tech-Talks BREGENZ - Wolfgang Nemitz, Scientist Joanneum Research
Tech-Talks BREGENZ - Wolfgang Nemitz, Scientist Joanneum Research Wolfgang Nemitz, scientist at the Joanneum Research Forschungsgesellschaft, won the LED professional Scientific Paper Award at the LpS 2015 in Bregenz with his paper entitled “Iterative Optical and Thermal Simulation Method for Proper Simulation of PC LEDs” (published in the LpS 2016 Proceedings / p. 122 and LpR 52 / p. 48). Siegfried Luger and Arno Grabher-Meyer took this opportunity to discuss his research, the practical value of the findings and general solid-state lighting issues with him. Read more »
Leading Article | Interview | Mar 09, 2016
Lumileds Sets New Standards for Mid Power Range LEDs
Lumileds Sets New Standards for Mid Power Range LEDs Rahul Bammi, Lumileds Vice President Marketing and Product Management and Matt Everett, Lumileds Senior Director Mid Power Products discussed their new Mid Power March product launches with Siegfried Luger, publisher of LED professional. This article covers the features of these new product lines. Read more »
Discussions | Mar 19, 2016
Discussion: Lighting Flicker of LED Lighting Systems
Discussion: Lighting Flicker of LED Lighting Systems Flicker is the modulation of a lamp’s light output caused by fluctuations of the mains voltage supply. Recent research has shown that fluctuations of short wavelength emissions are perceived to a higher extent and light flicker may have a huge influence on the well-being of end users. Prof. Georges Zissis, Head of Light & Matter Research Group at the LAPLACE Université de Toulouse presents and discusses the influence of driver topologies, research results, metrics and standards. Read more »
Reader Opinion | Mar 19, 2016
Discussion: The Value of Dark Skies - About Environmentally Friendly Lighting
Discussion: The Value of Dark Skies - About Environmentally Friendly Lighting For many years no one worried about light pollution: on the contrary, the brighter the better. Then it became evident that darkness also has its value. J. Scott Feierabend, executive director of the International Dark-Sky Association (IDA), presents and explains in detail, the latest ndings and suggestions published in the “New IDA LED Lighting Practical Guide” and “New IDA Standards on Blue Light at Night”. He also discusses how to illuminate public areas while avoiding excess light pollution. Read more »
Tech-Talks Bregenz | Apr 14, 2016
Tech-Talks BREGENZ - Karl Jónsson, IoT Architect, Tridonic
Tech-Talks BREGENZ - Karl Jónsson, IoT Architect, Tridonic Karl Jónsson, IoT Architect at Tridonic presented some interesting facts, figures, and ideas about IoT and the future of lighting in his speeches about “The Internet of Things and Lighting” at Zumtobel’s International Year of Light Event in 2015 and again at the Light + Building 2016 preview. LED professional got the chance to talk with him about his visions for IoT and Tridonic’s latest developments in that domain. Read more »
Commentary | Apr 19, 2016
Zhaga Meets Smart Lighting by Dee Denteneer
Zhaga Meets Smart Lighting by Dee Denteneer At first glance, the standardization of LED lighting components seems to be quite remote from the rise of smart, connected lighting and the Internet of Things (IoT). But the projected growth in penetration of smart lighting can only be realized through developments in high-volume electronics and standardization. Such standardization is intended to remove arbitrary variations in components, making design and implementation easier for manufacturers of smart LED luminaires, and enabling a supplier ecosystem. This is where Zhaga comes in. Read more »
LpR Article | Apr 21, 2016
Advanced Bluetooth 4.0+ Based Smart Lighting Technology
Advanced Bluetooth 4.0+ Based Smart Lighting Technology Smart lighting and lighting controls are not restricted by hardware or traditional lighting control protocols anymore. Today, system modifications and firmware updates can all be done over-the-air. Wireless technologies enable lighting controls in places where it was not an option before. Besides Bluetooth, Zigbee and WiFi there are proprietary technologies in use. Saara Guastella M.Sc. in Lighting Engineering and Lighting Controls, is Product Marketing Manager at Casambi. In the following article she introduces Casambi’s technology based on Bluetooth Low Energy, and describes, explains and compares it with other established communication technologies for smart lighting. Read more »
LpR Article | May 09, 2016
White Hybrid Light-Emitting Diodes: A Plausible Solution for Commercialization and Health Issues, by the University of Erlangen-Nuremberg (FAU)
White Hybrid Light-Emitting Diodes: A Plausible Solution for Commercialization and Health Issues, by the University of Erlangen-Nuremberg (FAU) One of the challenges in terms of commercialization of white LEDs is the need for cheap, inorganic phosphors. In this context, hybrid LEDs have recently emerged as a new approach based on downconverting organic coatings. The authors, Pedro B. Coto from the Institute for Theoretical Physics, Marlene Pröschel and Uwe Sonnewald from the Department of Biology, and Lukas Niklaus, Michael D. Weber and Rubén D. Costa from the Department of Chemistry and Pharmacy at the University of Erlangen-Nuremberg (FAU), describe this technology and cover recent breakthroughs and their prospects. Read more »
LpR Article | May 11, 2016
230 VAC Driven LED Modules with Strongly Reduced Flicker, by euroLighting
230 VAC Driven LED Modules with Strongly Reduced Flicker, by euroLighting One of the continuing trends in LED lighting is toward AC driven LED modules. Big progress has been made regarding dimmability and reduction of flicker. However, there are still differences in the various concepts that lead to very different results. Wolfgang Endrich, founder and managing director of euroLighting presents a recently improved new concept to significantly reduce flicker. Read more »
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