Cree achieves 186 lm/W for white LED
Dec 2, 2009 Cree reported R&D results of 186 lumens per watt for a white power LED. The LED produced 197 lumens of light output and achieved 186 lumens per watt efficacy at a correlated color temperature of 4577K. The tests were conducted under standard LED test conditions at a drive current of 350mA, at room temperature.
Author: Ray Andersson
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