Light Emitting Diodes have been heralded as the "next big thing" in energy saving technology for years- they draw very little power, can last up to 1,000,000 hours (they average 50-100,000), are remarkably durable when compared to glass bulbs, and contain no mercury or lead. LEDs have become brighter and less expensive in recent years, resulting in little mini-flashlights and lawn ornaments. We promise better things from this remarkable technology soon.
LEDs have recently been used in commercial applications such as landscaping, grocery
stores, stage lighting, and as we recently noted, in street lights.
Until now there was nothing powerful and compact enough to be used as a
direct replacement for an incandescent or compact flourescent
lightbulb, and while this doesn't quite fulfill our dream of the "perfect light bulb", it gets us closer.
At 1,000ma the Ostar Lighting LED produces 1,100 lumens from 22 watts - at 50 lumens per watt, that's not quite as good as the 60 lm/W I get from the 13 watt CFLs on sale at Wal-Mart today, but still dramatically better than the best viagra prices 15 lm/W an incandescent might get. At lower current the LED's efficacy really "shines" - drawing 700ma it gets 65 lm/W and at 350ma it gets 75 lm/W. Pricing, unfortunately, is not mentioned.
via physorg.com and LED Magazine
written by tahir iqbal, August 20, 2008
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