Resources | LpR Article | Technologies | Electronics | Drivers | Nov 09, 2017

LED Driver Miniaturization - Opening New Opportunities for Solid State Lighting

LED Driver Miniaturization - Opening New Opportunities for Solid State Lighting While LEDs have significantly improved over the past decade, driver technologies have not kept pace and are, in some respects, the limiting factors for new applications. Size is a particular issue. Dramatically increasing the switching frequency helps to reduce size but often causes other issues or is costly. Mickey Madsen, CEO of Nordic Power Converters, explains how his company has overcome the hurdles and made it feasible by designing very high frequency LED drivers. Read more »

Technologies | LEDs | Light Generation | Automotive | Oct 02, 2017

Eviyos LED Prototype Revolutionizes Smart Headlights

Eviyos LED Prototype Revolutionizes Smart Headlights The Eviyos prototype developed by Osram Opto Semiconductors is the world’s first hybrid LED and represents major progress toward the first market-ready smart controllable high-resolution LED. As soon as oncoming traffic is detected the appropriate pixels are automatically switched off so drivers of oncoming vehicles are not dazzled. The prototype, integrated in a demonstrator from Osram Specialty Lighting, were on show for the first time at ISAL from September 25 through 27, 2017 in Darmstadt. Read more »

Resources | LpR Article | Technologies | Light Conversion | Quantum Dots | Sep 25, 2017

Quantum Dot Based White LEDs for General Illumination

Quantum Dot Based White LEDs for General Illumination Colloidal quantum dot based white LEDs can be integrated into commercial products meeting the stringent reliability requirements for general illumination and providing LED efficiency gains of 5% to 15% over commercial phosphor based LEDs at CCT’s ranging from 5000 K to 2700 K. Unlike earlier demonstrations, the QD material is applied in an on-chip configuration resulting in drop-in fit, form, and function compatibility to existing LED based luminaires and lamps. Ken T. Shimizu, Director, Novel Technologies and Devices, Research and Development, M. Böhmer, D. Estrada, S. Gangwal, S. Grabowski, H. Bechtel, E. Kang, K. J. Vampola, D. Chamberlin, O. B. Shchekin, and J. Bhardwaj from Lumileds showcase the advantages of on-chip QD LEDs: A commercial lamp at 3000K color temperature and 90 CRI is substituted with QD based LEDs resulting in a system level efficiency gain up to 17%, attributed to the reduced blue LED droop from the lower drive current and the lower heat sink temperature when compared to the standard phosphor based LED lamp output. Read more »

Resources | LpR Article | Research News | CIE | Health | Sep 25, 2017

CIE Calls for Focused Research Efforts to Support Healthful Lighting Recommendations

CIE Calls for Focused Research Efforts to Support Healthful Lighting Recommendations Not so long ago, vision scientists thought that light detection - photoreception - was exclusively performed by rod and cone cells in the retina. Photobiologists, however, conclusively demonstrated otherwise with the identification of the intrinsically photoreceptive retinal ganglion cells (ipRGCs) [1]. Whereas rods and cones detect pattern and color, and send this information to the visual cortex, ipRGCs (of which we are learning there are several subtypes) detect irradiance, and route their information to many brain structures. The most thoroughly studied of these is the suprachiasmatic nucleus of the hypothalamus, location of the central circadian clock, where the light and dark signals trigger the offset and onset of production of the hormone melatonin. As shown in figure 1, however, ipRGCs also project to other structures, about which, as yet, we have little information. Read more »

Technologies | OLEDs | Flexible OLEDs | Sep 21, 2017

OLEDs Applied to Paper-Thin Stainless Steel

OLEDs Applied to Paper-Thin Stainless Steel Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of R&D in the field of organic electronics, will be presenting OLEDs on gauzy stainless steel foil during aimcal 2017 in Tampa/USA, from October 15-18, 2017. The novel application on display in Booth 22 was developed in cooperation with the Nippon Steel & Sumikin Materials Co., Ltd. (NSMAT) and Nippon Steel & Sumitomo Metal Corporation (NSSMC). Read more »

Technologies | LEDs | Light Generation | Sep 15, 2017

Tracing the Light Inside an LED

Tracing the Light Inside an LED The performance of white LEDs can be improved, based on better knowledge of the absorption and scattering of light inside the LED. A new method, developed by the University of Twente in The Netherlands and Philips Lighting, can lead to efficiency improvement and powerful design tools. Read more »

Technologies | LEDs | Light Generation | Sep 15, 2017

Nanoparticles Could Spur Better LEDs, Invisibility Cloaks

Nanoparticles Could Spur Better LEDs, Invisibility Cloaks In an advance that could boost the efficiency of LED lighting by 50 percent and even pave the way for invisibility cloaking devices, a team of University of Michigan researchers has developed a new technique that peppers metallic nanoparticles into semiconductors. Read more »

Business | Research News | Partnerships | Sep 13, 2017

Luger Research Creates an Active Network to Secure the Future of Innovation in Lighting: The First Meeting Will Take Place at the LpS 2017

Luger Research Creates an Active Network to Secure the Future of Innovation in Lighting: The First Meeting Will Take Place at the LpS 2017 Luger Research establishes the first scientific lighting partnership network for research experts and leaders in the lighting industry. The scientific partnership has been created to form an active network that will strengthen and build the connections between universities, research laboratories and industry. The scientific partnership’s mission is to enable and secure the continued development of innovation in lighting technology. Read more »

Resources | LpR Article | Research News | CIE | Measurement | Calibration | Sep 13, 2017

CIE Research Strategy on Defining New Calibration Sources and Illuminants

CIE Research Strategy on Defining New Calibration Sources and Illuminants In photometry and radiometry, traceability of measurements requires appropriate calibration sources and transfer detectors. A major challenge is the technological revolution of lighting products towards LED lighting and the ban of incandescent lamps. This raises concern about the availability of incandescent photometric standard lamps in the future while the prices of such standard lamps are already increasing. In addition, calibration conditions should ideally be chosen to be as close as possible to the measurement conditions. Furthermore, the number of LED lighting measurements in laboratories and in the field has significantly increased, while the calibration of photometers is still done using incandescentbased standards. Therefore, it is important to investigate the pros and cons of replacement of conventional standard lamps with new solid-state technology. Peter Blattner and Tony Bergen, Division 2 Director and Secretary respectively, explain how CIE has defined the research topic “New Calibration Sources and Illuminants for Photometry, Colorimetry, and Radiometry” to address these concerns. Read more »

Resources | LpR Article | Commentary | Technologies | Trends | Sep 13, 2017

Brave New World and the Dualism of Light(ing)

Brave New World and the Dualism of Light(ing) The lighting business has been quite predictable over a long period of time. Technical changes were introduced slowly, dominated by a handful of leading companies, and mostly due to new, but not disruptive light sources. The life of engineers was mainly determined by a manageable number of parameters: Lighting requirements, light source parameters, costs, product dimensions, and the odd, required feature. Read more »

Light Generation | Technologies | OLEDs | Flexible OLEDs | Sep 12, 2017

Flexible OLEDs with Adjustable Colors – New Design Options for Lighting Designers

Flexible OLEDs with Adjustable Colors – New Design Options for Lighting Designers The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, one of the leading R&D partners for surface technologies and organic electronics, specializes in the development and fabrication of OLED modules with unconventional properties for specific client designs. The Institute will debut flexible adjustable-color organic light-emitting diodes (OLEDs) at ISAL 2017 in Darmstadt, Germany from September 25-27, 2017 at its booth (No. 31). Read more »

Technologies | LEDs | Light Generation | Perovskite | Sep 06, 2017

Green Light from 2D Formamidinium Perovskites for Ultra-Fine Display Colors

Green Light from 2D Formamidinium Perovskites for Ultra-Fine Display Colors Chemical engineers from ETH Zurich have succeeded in generating ultra-pure green light for the first time. The new light-emitting diode will pave the way for visibly improved color quality in a new generation of ultra-high definition displays for TVs and smartphones. Read more »

Technologies | Light Conversion | LEDs | Quantum Dots | Aug 23, 2017

1000 Hour Quantum Dot LED Milestone Surpassed by Quantum Materials Corp

1000 Hour Quantum Dot LED Milestone Surpassed by Quantum Materials Corp Leading American Cadmium Free Quantum Dot manufacturer Quantum Materials Corp announced successfully surpassing the 1000 hour continuous on-time durability test for the Company's cadmium-free quantum dots in a remote light emitting diode (LED) application. The testing has been conducted with red and green quantum dots encapsulated in resin and mounted to blue emitting LED's (see diagram below), which are similar to the type of LED's used in standard LCD display back light units (BLU). Read more »

Resources | LpR Article | Tech-Talks Bregenz | Engineering | Technologies | Simulation Tools | Aug 01, 2017

Tech-Talks BREGENZ - Jamie Singerman, Future Lighting Solutions

Tech-Talks BREGENZ - Jamie Singerman, Future Lighting Solutions We recently sat down with Jamie Singerman, Worldwide Corporate Vice President, and Patrick Durand, Technical Director for Future Lighting Solutions, a leading provider of Solid-State Lighting technologies, engineering expertise and online simulation and design tools, to discuss the company’s differentiators and their views on the ever changing lighting market. Read more »

Technologies | Laser Technology | Jun 30, 2017

World’s Brightest Laser Sparks New Behavior in Light

World’s Brightest Laser Sparks New Behavior in Light Physicists from the University of Nebraska-Lincoln are seeing an everyday phenomenon in a new light. y focusing laser light to a brightness 1 billion times greater than the surface of the sun — the brightest light ever produced on Earth — the physicists have observed changes in a vision-enabling interaction between light and matter. Read more »

FEATURED

Nationstar's UV LED - a Pioneer in the DUV Sterilization Industry

Nationstar's UV LED - a Pioneer in the DUV Sterilization Industry Since 2016, NATIONSTAR has launched near-ultraviolet LED, deep-ultraviolet LED and modules, with wide wavelength range, high reliability and good feedback in the market. At present, we have established partnerships with many well-known manufacturers. Read more »

FEATURED

Industry Leading LUXEON 5050 LED Gets Performance Boost

Industry Leading LUXEON 5050 LED Gets Performance Boost Streetlights and high-bay fixtures require high flux and efficacy to meet the ever-increasing demands for system efficiency and energy cost reduction for these applications. Today, LUXEON 5050 LEDs received an upgrade in both flux and efficacy. Typical performance is now 675 lm with 172 lm/W in ... Read more »

FEATURED

Cree® XLamp® XM-L3 LEDs – More Output & Reliability

Cree® XLamp® XM-L3 LEDs – More Output & Reliability The XLamp® XM-L3 LED delivers a massive 55% upgrade in maximum light output over the XM L2 LED, providing a single-die LED point source for precise optical control. The XM-L3 LED shares the same mechanical and optical footprint as the original XM-L® and XM-L2 LEDs, providing a seamless upgrade path ... Read more »