White LED Benchmark of 65 Lumens Per Watt Achieved

Led_Blind

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Something I thought you guys may be interested in..enjoy

http://www.netl.doe.gov/ssl/highlights_cree2.html
"Novel chip design and the balance of multiple interrelated design parameters have enabled Cree, Inc.'s Santa Barbara Technology Center to demonstrate white LEDs with efficacies greater than 65 lumens per watt at 350 mA. The results are particularly significant because they were achieved with a pre-production prototype chip using the same package used in Cree's commercially available XLamp® 7090 high power LED, rather than a laboratory device."
 
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Now, we can only sit back and see if it will stay reasonably close within the spec with 50°C case temperature likely seen in real life use.
 

NewBie

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This is also an interesting tidbit, meaning it was not just one device...

"...with proven long-term reliability. In spite of the blue chip's slightly higher than optimal operating voltage, the output from the XLamp devices averaged over 65 lumens per watt, with individual devices as high as 70 lumens per watt for a 0.9 x 0.9 mm2 chip operating at 350 mA. The color-coordinated temperature of the lamps was ~6000 K.

Cree is targeting to make its new brighter LED chips commercially available in 2006."
 

Led_Blind

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Together with using the same chip packaging as is currently used it looks hopefull that we may get to play with a 60Lm 1Watt light before the end of the year.

Just imagine a 60lm fenix. . . .hmm
 
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