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| Science & Technology |
| Cree achieves 186 lumens/watt in lastest LED |
| 2009-12-01 |
| from company public affairs release Cree's tests confirmed that 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. While this level of performance is not yet available in Cree's production LEDs, Cree has had some trouble in making commercial quantities of its leading edge products at reasonable cost Cree continues to offer volume quantities of the industry's broadest family of 100+ lumen LEDs as compared to 20 lumen/watt for incandescent, 50 lumen/watt for the compact fluorescent and 80 lumen/watt for commercial long tube fluorescent. |
| Posted by:lord garth |
| #1 It is almost a given that unless light is close to natural light, with the exception of some of the invisible bands, it won't be as good for you. Importantly, light has to penetrate the skin to some depth to stimulate Vitamin D production, and not all bands will readily do that. |
| Posted by: Anonymoose 2009-12-01 13:02 |