Haitz's Law and LED Lightbulbs

Haitz's Law and LED Lightbulbs

Emily Smith
Sep 13, 2011

If you're wondering what the future of light bulbs is going to look like, LED technology is going to improve exponentially over the next few ears, according to Haitz's law. This is great news, as LEDs last many years, utilize little power, and don't contain mercury. Read more after the jump.

Haitz Law states that "every decade, the cost per lumen (unit of useful light emitted) falls by a factor of 10, the amount of light generated per LED package increases by a factor of 20, for a given wavelength (color) of light." This means that compact fluorescent lightbulbs (CFLs) are likely just part of the transition phase, and that in a few years the majority of lights sold by the $30 billion lighting industry are likely to be LEDs.

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(Image: Michael Graham Richard for TreeHugger)

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