billondrums
Newly Enlightened
- Joined
- Feb 3, 2014
- Messages
- 6
Has anyone come across a design that places LEDs on a bridge facing towards the reflector? I believe this would cut down glare while providing excellent light.
Parabolic Reflector Design
- Thread starter billondrums
- Start date
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uk_caver
Flashlight Enthusiast
There was a 'reflex' arrangement like this in some flashlights a while ago (IIRC, by Peli Products?).
Advantage is a lack of spill where a light is trying to be pure spot.
Disadvantages are a more complicated cooling path and having the LED mounting in front of the reflector - with a perfectly focussed smooth reflector there'd be a shadow image of the LED+heatsink/mount in the beam.
Advantage is a lack of spill where a light is trying to be pure spot.
Disadvantages are a more complicated cooling path and having the LED mounting in front of the reflector - with a perfectly focussed smooth reflector there'd be a shadow image of the LED+heatsink/mount in the beam.
Cree PAR38 lamp did this a few years ago. Expensive and as uk caver mentioned difficult to get the heat out....
http://lighting.cree.com/products/indoor/lamps/lrp-series
http://lighting.cree.com/products/indoor/lamps/lrp-series
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