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Submission + - 200 lumens per watt LED tube, in 2015->

Taco Cowboy writes: According to wikipedia, the most efficient artificial lighting device has been the low pressure sodium lamp, which can output up to 200 lumens-per-watt of light

http://en.wikipedia.org/wiki/Luminous_efficacy

According to Phillips, the lighting giant from the Netherlands, they have accomplished the same efficiency with LED — which outputs 200 lumens-per-watt — on par with that of the low pressure sodium lamp, in tube form

According to according to Jy Bhardwaj, senior vice president of research and development at Philips’ Lumileds LED division, Philips expects their 200 lpw TLED to be available for purchase some time in 2015.

More info can also be had at http://www.extremetech.com/electronics/153123-philips-200-lumens-per-watt-prototype-led-lamp-is-the-worlds-most-efficient

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200 lumens per watt LED tube, in 2015

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