Led Luminaries

 Cree has announced a light guide technology branded ‘WaveMax’. And that is about all that has been said. It has ‘DiamondFacet’ optical elements, achieves “up to 90 percent optical efficiency” and is used in the firm’s LN (office) and IG (garage) luminaires. No you know as much as anyone. A bit brand-heavy and fact-light, I feel. The firm is another ...

Luminus want a slice of retail lighting with its XH series CoBs. Right now I am struggling to find much more information. What I have is on the Electronics Weekly news site. If you are at Lightfair, I suspect Luminus will tell you all you need to know.  

It is not often you hear of a new packaging concept for LEDs. Three days ago Litecool of Sheffield got patents for an adhesive-backed one – that can be pick-and-placed straight onto a heatsink. Carclo 10mm lenses can be places straight on top. Not only that, but it makes its own electrical connections – so no pcb or mcpcb is ...

If optic diameter is important, forming letter-box beams is such a struggle, that the likes of Lumileds, Cree and Osram should make some nice rectangular die. Only my opinion of course, fuelled by my attempts to make anti-dazzle bicycle lights, but I am sure designers of wall-washers and other fan-beam luminaires would soon make used of them. Osram and Lumileds ...

Osram has introduced a range of leds for feeding light guides in automotive external lighting. All the packages have the same 2.7 x 2.0 x 0.6mm external characteristics, despite the range of die colours and die sizes available. Called Synios P 2720, the family is aimed at daytime running lights, position lights, and tail light clusters. Die are either 500µm, ...

Osram has increased the output of its Oslon Black 850nm  infra-red LEDs for the second time in six months. Aimed at security camera illumination, SFH 4715AS can deliver 1.34W of IR at 1A (at 3.2Vtyp) with a +/-45° beam angle. The package remains 3.85 x 3.85mm, and 2.29mm high with a thermal resistance of 9K/Wmax. There is also a +/-75° ...

Ohio-based Global Lighting Technologies (GLT) intends to compete with OLED lighting using thin light guides – 2mm over much of the area and 3.5 at the edges of the 100x100mm version it is exhibiting at Lightfair. For slightly more information, see the GLT on the Electronics Weekly news website. a . I am dying to see how light is coupled in without fiddly ...

 Cree has introduced LMH2+, a higher efficacy version of its LMH2 light engine. Because the modules include both white (blue die amber phosphor) and red leds, 125 lm/W and 90 CRI are available together. “The LMH2+ is a drop-in upgrade for LMH2-based designs,” said Cree – which is not completely true, as ‘+’ versions only come in 90 CRI ‘whitelight ...

The German Government is supporting an attempt to cut cost from led luminaires by integrating manufacturing from epitaxy to finished product. See the Electronics Weekly news site for more.

The University of Manchester has made LEDs using a quantum well heterostructure made from 2d materials including graphene, boron nitride, and molybdenum disulphide. Efficiency isn’t far behind OLEDs. For more, scroll to the bottom of this graphene led story on the main Electronics Weekly website.