Technologies
LEDS, OLEDS, OPTICS, THERMAL MANAGEMENT, ELECTRONICS & SMART CONTROLS, MEASUREMENT & SIMULATION, STANDARDIZATION, INTELLECTUAL PROPERTIES
Plessey Builds LEDs in Cubic GaN on 3C-SiC/Si To Overcome The Green Gap

Plessey Builds LEDs in Cubic GaN on 3C-SiC/Si To Overcome The Green Gap

Plessey, Anvil Semiconductors and the University of Cambridge announced today that they are working together to fabricate high efficiency LEDs in cubic GaN grown on Anvil's 3C-SiC / Si substrates. Cubic GaN has the potential to overcome the problems caused in conventional LEDs by the strong internal electric fields which impair carrier recombination and contribute to efficiency droop. This is particularly true for green LEDs where the internal electric fields are stronger and are believed to cause a rapid reduction in efficiency at green wavelengths known as "the green gap". The availability of cubic GaN from a readily commercialisable process on large diameter silicon wafers is as a key enabler for increasing the efficiency of green LEDs and reducing the cost of LED lighting.

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Uncovering Oxygen’s Role in Enhancing Red Eu-Doped GaN LEDs

Uncovering Oxygen’s Role in Enhancing Red Eu-Doped GaN LEDs

Oxygen is indispensable to animal and plant life, but its presence in the wrong places can feed a fire and cause iron to rust. In the fabrication of solid state lighting devices, scientists are learning, oxygen also plays a two-edged role. While oxygen can impede the effectiveness of gallium nitride (GaN), an enabling material for LEDs, small amounts of oxygen in some cases are needed to enhance the devices’ optical properties. GaN doped with europium (Eu), which could provide the red color in LEDs and other displays, is one such case.

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ORNL Superhydrophobic Glass Coating Offers Clear Benefits - Maybe Also for Lighting Optics

ORNL Superhydrophobic Glass Coating Offers Clear Benefits - Maybe Also for Lighting Optics

A moth’s eye and lotus leaf were the inspirations for an antireflective water-repelling, or superhydrophobic, glass coating that holds significant potential for solar panels, lenses, detectors, windows, weapons systems and many other products. The discovery by researchers at the Department of Energy’s Oak Ridge National Laboratory, detailed in a paper published in the Journal of Materials Chemistry C, is based on a mechanically robust nanostructured layer of porous glass film. The coating can be customized to be superhydrophobic, fog-resistant and antireflective.

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Novel Nanoparticle Production Method Could Lead to Better LED Lights, Lenses and Solar Cells

Novel Nanoparticle Production Method Could Lead to Better LED Lights, Lenses and Solar Cells

Sandia National Laboratories has come up with an inexpensive way to synthesize titanium-dioxide nanoparticles and is seeking partners who can demonstrate the process at industrial scale for everything from solar cells to LEDs. Titanium-dioxide (TiO2) nanoparticles show great promise as fillers to tune the refractive index of anti-reflective coatings on signs and optical encapsulants for LEDs, solar cells and other optical devices.

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Litecool Turns LED Packaging on Its Side

Litecool Turns LED Packaging on Its Side

Litecool has produced LED packages in a vertical orientation rather than horizontal. This means that the dielectric layers only have a minor impact on the thermal performance of the LED package and allow the heat to escape more effectively through the metallic parts of the package. This has significant benefits for flip-chip packaging where dielectric layers are usually very close to the diode.

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Gunshot Detection for Lighting Fixtures

Gunshot Detection for Lighting Fixtures

Cities and their emergency responders will soon have a new way to deploy gunshot detection technology and be able to respond to incidents and react faster to protect their residents. A memorandum of understanding (MOU) between GE Lighting and SST, Inc., developer of the ShotSpotter™ crime detection and location suite, lays ground to embedding sophisticated ShotSpotter technology into GE’s intelligent LED street lights.

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Zhaga Book 13 - LED Drivers - for Download, Certified Products Database Improved

Zhaga Book 13 - LED Drivers - for Download, Certified Products Database Improved

The Zhaga Consortium has published a new specification for LED drivers that are used in combination with separate LED modules. The introduction of standardized form-factors for LED drivers is expected to bring significant benefits for LED luminaire makers, including enhanced second-sourcing options and the ability to interchange different LED modules and drivers independently. Furthermore, Zhaga has updated its database of certified products and built a new search engine that allows LED luminaire makers and other users to find and compare components.

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How Much Can the Color of Nominal CCT Vary?

How Much Can the Color of Nominal CCT Vary?

The threshold at which a color difference becomes perceptible is defined by a MacAdam ellipse. A MacAdam ellipse is drawn over the color space in such a way that the color at its center point deviates by a certain amount from colors at any point along its edge. The scale of a MacAdam ellipse is determined by the standard deviation of color matching (SDCM). A color difference of 1 SDCM “step” is not visible; 2 to 4 steps is barely visible; and 5 or more steps is readily noticeable.

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Lumitech Licenses Seoul Semiconductor for  PI-LED Technology Applications

Lumitech Licenses Seoul Semiconductor for PI-LED Technology Applications

Seoul Semiconductor, a global leading LED components manufacturer from Korea, and the Austrian company Lumitech, a leading manufacturer of components for Human Centric Lighting announced a licensing agreement for PI-LED technology patents. These patents govern the industrial trade mark rights of Lumitech’s PI-LED technology, which can implement tunable white from 2.500 to 7.000K with perfect colour rendering in a high and constant efficiency. Based on the license agreement, Seoul Semiconductor has the right to offer tunable white components based on the leading PI-LED technology, worldwide.

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FEATURED

BJB Develops COB Holders for Bridgelux V-Series Arrays | CLICK HERE FOR APPLICATION VIDEO

BJB Develops COB Holders for Bridgelux V-Series Arrays | CLICK HERE FOR APPLICATION VIDEO BJB 47.319 holders for the Bridgelux V Series arrays feature state-of-the art electro-mechanical technology. Holders help simplify the entire fixture’s assembly process and also provide numerous benefits to the overall quality, performance and lifetime of the lighting system. BJB holders and the ... Read more »

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Honglitronic 2835-PCT - Superior Performance & Competitive Price

Honglitronic 2835-PCT - Superior Performance & Competitive Price Guangzhou Hongli Opto-Electronic Co., Ltd., a leader in advanced components in China, announced that 2835-PCT, the company’s new mid-power LED package line-up with high light efficacy, 1 W product lighting efficiency up to 130 lm/W. 2835-PCT is now offered with 3-step MacAdam ellipse bins and ... Read more »

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Lumileds Adds High Efficacy Outdoor Module to Matrix Platform

Lumileds Adds High Efficacy Outdoor Module to Matrix Platform Today Lumileds introduces the new Luxeon XR-TX module, incorporating 12 Luxeon TX high-efficacy LEDs to produce 3300 lumens and 140 lm/W at nominal drive conditions*. In a convenient rigid form factor, the modules are designed to be readily combined with third party lens plates and drivers to ... Read more »

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Samsung LM561B+: Higher Quality Light Color for Premium Luminaires

Samsung LM561B+: Higher Quality Light Color for Premium Luminaires Samsung Electronics announced that LM561B+ is now offered with 3-step MacAdam ellipse bins and quarter bins across the range of all CCTs (from 2700 K to 6500 K), for use in premium luminaires. Read more »

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Cree XLamp XQ-A LED: Lower System Cost in Proven Ceramic XQ Pkg

Cree XLamp XQ-A LED: Lower System Cost in Proven Ceramic XQ Pkg The XLamp XQ-A LED brings a mid-power, cost-effective option to the proven, compact ceramic XQ package, enabling lighting manufacturers to quickly expand their product portfolio by leveraging a common XQ design. Unlike plastic mid-power LEDs, the ceramic-based XQ-A LEDs are designed to deliver the ... Read more »

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UEL240B-A1Z:≥15 kV Surge Immunity, 3 in 1 Dimming Function

UEL240B-A1Z:≥15 kV Surge Immunity, 3 in 1 Dimming Function Since 1989 UE Electronic has been the world's leading brand of high-power LED driver power supply. Its latest developed product - UEL240B-A1Z - is a modular intelligent control constant current high power LED driver. It has 3 in 1 dimming function, high efficiency, waterproof, long lifetime etc. ... Read more »

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