V
Victor Roberts
- Jan 1, 1970
- 0
Those of you who have read my posts in this group know that
I am skeptical of many LED performance reports, and also
don't like "science via press release" since too many
important details can be left out. However this one is hard
to ignore.
http://www.cree.com/press/press_detail.asp?i=1150834953712
Cree has a reputation for honest data and I doubt they would
say their data had been confirmed by NIST of it had not
been. Note that this is a 20 ma LED. I would like to see
the actual power in and light output data, but this is all I
have right now. They don't say if this is a blue (or UV) +
phosphor LED or uses three or more monochrome chips. (Though
reading between the lines suggests a multi-chip system.)
They also don't give the CRI, but 131 lm/W is still quite
impressive.
--
Vic Roberts
http://www.RobertsResearchInc.com
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site without written permission.
I am skeptical of many LED performance reports, and also
don't like "science via press release" since too many
important details can be left out. However this one is hard
to ignore.
http://www.cree.com/press/press_detail.asp?i=1150834953712
Cree has a reputation for honest data and I doubt they would
say their data had been confirmed by NIST of it had not
been. Note that this is a 20 ma LED. I would like to see
the actual power in and light output data, but this is all I
have right now. They don't say if this is a blue (or UV) +
phosphor LED or uses three or more monochrome chips. (Though
reading between the lines suggests a multi-chip system.)
They also don't give the CRI, but 131 lm/W is still quite
impressive.
--
Vic Roberts
http://www.RobertsResearchInc.com
To reply via e-mail:
replace xxx with vdr in the Reply to: address
or use e-mail address listed at the Web site.
This information is provided for educational purposes only.
It may not be used in any publication or posted on any Web
site without written permission.