stamat
Newly Enlightened
- Joined
- Oct 28, 2005
- Messages
- 44
I see that Warm White LEDs are starting to make progress in the efficiency department.
"Seoul Semiconductor Unveils Warm White Acriche of 42 lm/W"
http://www.marketwire.com/mw/release_html_b1?release_id=241066
Anybody knows of plans for a smoother spectrum flashlight sporting one of those Warm White LEDs?
Surely if people are buying cyan flashlights there should be market for balanced spectrum ones.
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On another note I tried a Streamlight Twin Task 3xAA a guy has at work.
I wired both the LEDs and the incandescent bulb together. With a piece of "satin" tape in front as diffuser, it had relatively smooth beam and consistent spectrum (all electrical wire colors in the lab looked natural). The current was about 850mA on half spent alkaline batteries though. That is a bit too high load for a AA battery (measured 1.4V after the experiment). It may be better with les blue LEDs and lower current bulb...
"Seoul Semiconductor Unveils Warm White Acriche of 42 lm/W"
http://www.marketwire.com/mw/release_html_b1?release_id=241066
Anybody knows of plans for a smoother spectrum flashlight sporting one of those Warm White LEDs?
Surely if people are buying cyan flashlights there should be market for balanced spectrum ones.
___________________________________________
On another note I tried a Streamlight Twin Task 3xAA a guy has at work.
I wired both the LEDs and the incandescent bulb together. With a piece of "satin" tape in front as diffuser, it had relatively smooth beam and consistent spectrum (all electrical wire colors in the lab looked natural). The current was about 850mA on half spent alkaline batteries though. That is a bit too high load for a AA battery (measured 1.4V after the experiment). It may be better with les blue LEDs and lower current bulb...