HCL | Systems + Applications | Luminaires | Circadian Light | Jul 24, 2020

Ledvance Extends Its BIOLUX HCL Range that Supports Circadian Rhythms

Ledvance Extends Its  BIOLUX HCL Range that Supports Circadian Rhythms Ledvance have launched a new range of BIOLUX HCL products which are tailored to the specific demands of healthcare environments. The new products provide biologically optimized day-night lighting which reflects natural circadian rhythms to benefit both patients and medical staff, improving sleep regularity, concentration and mood. Read more »

Archived Webinar

WEBINAR - INFINEON: "CoolMOS™ CE and LED Driver ICs- The Ideal Combination from LED Tubes to LED Drivers" by Infineon

LED Bulb Application. Infineon, as a well-known system provider, offers the optimal solution for LED Lighting applications starting from LED tubes up to high power LED drivers with the powerful combination of CoolMOS™ CE and the suitable LED Driver ICs. CoolMOS™ CE offers an ideal price/performance value with no compromise on the proven benefits of superjunction technology: it comes with low conduction and switching losses that improve efficiency and ultimately reduce power consumption. CoolMOS™ CE comprises 500V, 600V, 650V and 800V devices targeting LED lighting and further applications like LCD and LED TV. In addition, Infineon has recently launched several new LED Driver ICs suited for various topologies requiring different voltage classes being the perfect match to the broad CoolMOS™ CE portfolio. Read more »

Standardization | Smart Lighting + IoT | IoT | Systems + Applications | amp | Commentary | Resources | Aug 24, 2020

Paradigm Changes in Lighting Are Challenging Lighting Companies

Paradigm Changes in Lighting Are Challenging Lighting Companies Fabien Bubendorff has a Master in Electronic Engineering and has 10 years' experience in the lighting industry. He has spent more than 13 years living in China. He worked as a Product Manager for a Retail Lighting Company, for the Last 5 years he was responsible for Wever&Ducré as the Head of R&D in China and for the last years Head of R&D at XAL in Austria. Now he has founded an independent consultancy to support European Lighting Companies to deal with these future challenges. He specialized in finding the optimal balance between function and cost to increase product profitability. Read more »

White LEDs | LEDs | Components | May 23, 2017

Lumileds Sets New Standard for Efficiency and Reliability in Popular Mid Power Package

Lumileds Sets New Standard for Efficiency and Reliability in Popular Mid Power Package The LUXEON 2835E 3V LED achieves up to 170 lm/W with superior lumen maintenance to that of competing LEDs. Read more »

LpR Article | Jun 23, 2016

Advanced Optical Plastics Materials for LED Lighting Applications by Styron LLC

Advanced Optical Plastics Materials for LED Lighting Applications by Styron LLC Across a range of lighting solutions, Light Emitting Diodes have emerged as the clear choice for industry and consumers alike. Government regulations and consumer preference for more environmentally-conscious, energy-efficient products have caused manufacturers to develop solutions for the marketplace that offer new levels of energy efficiency, durability and long life. While the technology has evolved, so have the materials that go into the finished product. Claude Van Nuffel, Eric Wu, Peter Jackson and Marta Sans Peña from Styron LLC discuss versatility and one-of-a-kind properties of plastic – especially polycarbonate and polycarbonate blends – and why they have become the “materials of choice”. Read more »

LpR Article | Jun 27, 2016

Thermal Transient Testing of LEDs for More Reliable SSL Products by Mentor Graphics

Thermal Transient Testing of LEDs for More Reliable SSL Products by Mentor Graphics An LED device’s reliability, useful operating lifetime and luminous flux are basically determined by the junction temperature; therefore, so is the lifetime and reliability of the final SSL application. Thermal transient testing is now supported by new industrial laboratory testing standards published by JEDEC. Dr. Andras Poppe, Mechanical Analysis Division, MicReD, at Mentor Graphics will explain the corner stones of this standard and discuss application examples. This includes measurement of the RthJC, test-based thermal modeling of the LED package, hot lumens prediction, and monitoring of degradation of the thermal interfaces during life-time test, to name just a few. Read more »

LpR Article | Technologies | Jun 30, 2016

High Color-Rendering, Full-Visible-Spectrum LEDs by Soraa

High Color-Rendering, Full-Visible-Spectrum LEDs by Soraa The first wave of conventional white LEDs primarily focused on lumens per Watt. These LEDs were based on phosphor down-conversion using primary blue “pump” emission. Currently LEDs are catching up in regards to light quality using different approaches. Aurelien David, Senior Principal Scientist and Mike Krames, Chief Technology Officer at Soraa explain their technology approach of violet-pumped, full-visible-spectrum LEDs, and the interrelated challenges and advantages. Read more »

LpR Article | Sep 01, 2016

Discomfort Glare Perception of Non-Uniform Light Sources in an Office Setting

Discomfort Glare Perception of Non-Uniform Light Sources in an Office Setting LED based luminaires with different luminance patterns and recently, with increasingly non-uniform luminance patterns are becoming mainstream. This trend makes discomfort due to glare an important topic. Based on an office setting and the comparison of results from three different regions, L. M. Geerdinck, J. R. Van Gheluwe and M.C.J.M. Vissenberg from Philips Research have reviewed the currently used formulae to predict discomfort glare to ascertain if they are still valid. Read more »

LpR Article | Research | Jul 11, 2016

Al2O3 Coated Europium- Activated Aluminum Silicon Nitride for COB LED Technology by the Graz University of Technology and Tridonic Jennersdorf

Al2O3 Coated Europium- Activated Aluminum Silicon Nitride for COB LED Technology by the Graz University of Technology and Tridonic Jennersdorf Eu2+ activated nitride phosphors have drawn much interest for solid state lighting because of their interesting photoluminescence. While they show excellent optical properties, they are hygroscopic and have the potential of being degraded by atmospheric moisture and high temperatures. A coating layer on the surface is an effective method to improve stability against moisture and oxidation. For use in chip on board technology, Nika Mahne, master student at the Institute of Inorganic Chemistry, A. Reichmann, B. Bitschnau, R. Fischer, from the Graz University of Technology, and F. Schrank from Tridonic Jennersdorf propose an approach where a CaAlSiN3:Eu2+ [1, 2, 3] phosphor was coated with Al2O3, obtained via a Brønsted precipitation reaction based on a solution-coating process from a mixture of aluminum halide with a base after annealing at a temperature of 400°C. Read more »

Products, Materials + Tools | May 08, 2012

Philips to Launch 23-watt LED Bulb to Replace 100-watt Incandescent

Philips’ 100W-equivalent bulb will be available some time in the fourth quarter The Light Fair convention kicks off in Las Vegas this week so there will be any number of related announcements coming soon. Lighting giant Philips is starting things off early with the announcement of their 100W-equivalent LED bulb, the AmbientLED 23W. The model produces 1700 lumens, putting it at a very respectable 73.9 lm/W. 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 »

Lp Article | Technologies | Sep 06, 2016

LightSpeed Experience Center

LightSpeed Experience Center On August 26th, 2016 the editors of LED professional Review were invited by EBV Elektronik to visit their newly established “LightSpeed Experience Center” in Poing near Munich. It’s a very special meeting center, where you can view advanced and future technologies in the optoelectronics world. You could call it a tech incubator and think tank that enables innovation and creativity to combine. Read more »

Discussions | Interview | Apr 07, 2016

Interview & Discussion: 5 Questions About Intelligent Lighting with Dr. Walter Werner

Interview & Discussion: 5 Questions About Intelligent Lighting with Dr. Walter Werner Interview with Dr. Walter Werner, Managing Director at Werner Management Services in Austria. This interview was originally published in The Lighting Magazine, Australia. Read more »

Technologies | Light Generation | LEDs | Phosphors | Jan 22, 2020

Researchers from Hokkaido University Let Europium Shine Brighter

Researchers from Hokkaido University Let Europium Shine Brighter A stacked nanocarbon antenna makes a rare earth element shine 5 times more brightly than previous designs, with applications in molecular light-emitting devices. - The europium Eu(III) complex with nanocarbon antenna emitting fine red light. Read more »

LpR Article | Technologies | May 19, 2016

3-Pad LED Flip Chip COB by Flip Chip Opto

3-Pad LED Flip Chip COB by Flip Chip Opto 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 »

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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