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Cree R&D announce 208 lm/W LED results

15 February 2010 15.30GMT

(USA) - LED manufacturer Cree has reported the successful production of a white power LED with an efficacy of 208 lumens per watt. This R&D result passes a significant milestone within the solid-state lighting industry.

Cree’s tests confirmed that the LED produced 208 lumens of light output and achieved 208 lumens per watt efficacy at a correlated colour temperature of 4579 K. The tests were conducted under standard LED test conditions at a drive current of 350 mA at room temperature.

While this level of performance is not yet available in Cree’s production LEDs, Cree sees this latest result as a demonstratiion of the company's drive to advance LED technology.

“We have now broken the elusive 200-lumen-per-watt efficacy barrier for a single white power LED,” said John Edmond, Cree co-founder and director of advanced optoelectronics. “This is a result of improvements in blue optical output power, lower operating voltage and higher conversion efficiency. We continue to push the envelope in white LED technology to enable the highest efficiency white lighting products in the marketplace.”


Cree laboratories
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