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Science & Technology
Up to 131 lumens per watt with LED
2006-06-21
Cree Demonstrates 131 Lumens per Watt White LED
[full disclosure MHW family owns some stock in Cree]
... Cree, Inc. (Nasdaq: CREE - News),..announced LED efficacy test results ... of 131 lumens per watt white LED efficacy, confirmed by the National Institute of Standards and Technology...LED chips operating at 20 mA and a correlated color temperature of 6027 K.

I posted on RB when Cree got up to 80 lumens/watt a few weeks ago. That was a soft white suitable for reading, etc. This test was for a harsh white not suitable for reading. However, it does show yet more promise. Once again, for context, incandescent bulbs are about 20 lumens/watt, compact fluorescents about 60 lumens per watt. After the previous post we had a discussion about the nature and pace of the use of LEDs
Posted by:mhw

#3  actually the power companies may be happy because lowered lighting will tend to decrease the peak load more than the base load (hot days have peak load partly because of waste heat from the lighting of shopping centers and office buildings
Posted by: mhw   2006-06-21 20:05  

#2  Excellant!

Of course the MHW family (among others) will start getting solicitations from agents of the "big power companies" to sell their stock. High efficiency LEDs are bad news for some.

Posted by: Mullah Richard   2006-06-21 19:05  

#1  Thank you, mhw, for keeping us apprised. :-)
Posted by: trailing wife   2006-06-21 17:11  

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