LED Design

Lights are the most prevalent electrical components in any commercial building, and that makes them the most logical devices for smart building sensors, according to Russ Sharer, vice president of global marketing and business development at Fulham. “In new construction you can plan to use standalone smart building control sensors, but only 8% of commercial space is new construction. However, ...

Lumileds has released an application note on assembling its Luxeon FlipChip White lighting leds. Although intended to cover handling and assembly, it has some interesting snippets on light extraction – stuff you really need to know if you don’t want to be throwing a lot of light away. It transpires that “more than 28% of the total light is emitted downward or ...

Fujitsu’s Arrows NX F-04G phone it secured by iris scanning – it will not un-lock until it views the correct iris. Osram is supplying the led used as an infra-red source for the scan. “These ireds are the only ones capable of the high power needed for iris scanning from a compact package”, said the firm. -Hats off to Osram ...

Litecool of Sheffield has managed to get a 36deg beam and >90% efficiency from a packaged LED with no secondary optics, and CEO James Reeves seems confident narrower beams are possible without much further loss in efficency. It the proof-of-concept device, which ws an attempt at producing a 40deg beam, 50% of light it within 36deg, said Reeves. He won’t ...

You have got to hand it to Litecool of Sheffield, it certainly knows how to get heat out of leds*, as it is demonstrating with a remarkably small (take a look at the ruler on the desk) 2.5kg (including heatsink) 10,000 lm high bay luminaire. And the heatsink looks good. “We are not really heat sink designers, this heat sink only ...

 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 ...

In April, Microchip, Osram Opto, and Osram ‘LED Light for You’ partners have teamed up to hold workshops on leds ad led drivers. The dates are: 14th April Manchester 16th April Reading “These LED workshops offer developers and manufacturers the chance to brush up on the latest trends and innovations for intelligent LED based designs. LED efficiency, colour consistency and ...