Quote:
Originally Posted by BarraCuda™
Based on your article, they are using an array of 24x 1.2watt Luxeon LEDs to get 800lumens. Using basic calculation that will be an total of 28.8watts for 800lumens or 27lumens/watt.
Luxeon LEDs give out alot of heat for their tiny size and can fry itself if the heat is not well dissipated.
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Right, so that's 27.7 lumens per watt or 83.3 lumens for 3 watts. And that was three years ago. The lights made by both Ultraled and Optolum are both claimed to be low temperature devices so it looks like the three years has seen a little progress.