Recent content by Roger44
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Estimating IRC with the Grease Spot Test
hello The other day, doing a "grease spot test", I noticed the transition of the spot from bright to dark was very sharp when comparing icandescent, including halogen, and CFLs between each other. However when comparing an 8 watt white LED array and a 40W incandescent source, the transition...- Roger44
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- Forum: General Light Discussion
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Another big breakthrough for CREE! 186 lumens per watt!
I'd like to jump in on this thread as I'm getting too high results when calculating CFL lumens/watt, maybe somebody can help me. If I paste into Excel column 1 the F11 "3-band phosphor" column from this table : http://www.cis.rit.edu/mcsl/online/CIE/Fluorescents.htm then the V-lambda eye...- Roger44
- Post #36
- Forum: Non-Flashlight LED Forum
