Quote:
Originally Posted by MauR
That sounds very interesting!!!! How does it works??
|
Check out these forums:
http://budgetlightforum.com/node/58094
https://www.candlepowerforums.com/vb...ots-comparison
http://www.candlepowerforums.com/vb/...=1#post5130843
These guys take pedestrian old flashlights and upgrade them with latest LEDs from Cree to make lightsabre!
Link to original page on YouTube.
Link to original page on YouTube.
Most LED bulbs use multiple crap LED chips in CSP package. Which results in larger-than-filament size and results in fuzzy focus and glare. They are typically only 50-lumens/per watt OTF (not as efficient as incandescent halogen). Genuine Cree xhp70.2 LED is 100lm/w OTF. At equivalent 55w power-consumption, you're looking at 5500-lumens, or more than 2x automotive high-beam lights.
Trick is mounting it into bulb-format. Most of those LED bulbs appear to use ceramic base, while heat-resistant, but doesn't actually conduct heat very well. I'm thinking of mounting to one-sided copper centre support attached to aluminium heatsink base (bottom is wasted in HID projector anyway). In which case, thermal-conductivity will be fast enough to not require those silly little fans they use.