Cree Achieves 161 Lumen per Watt for High-Power LED
Nov 21, 2008 From press release: “Cree's tests confirmed that the 1mm x 1mm LED produced 173 lumens of light output and achieved 161 lumens per watt efficacy at a color temperature of 4689K. The tests were conducted under standard LED test conditions at a drive current of 350mA, at room temperature.”
Earlier this year Lumileds reported 140.1 lm/W and Osram Opto Semiconductors achieved 136 lm/W for their LEDs.
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