Gallery: The Best Sustainable Building Products from Greenbuild 2012 in...

Other vendors had their heads pointed to the sky as well. Parans is a clever Swiss device now available in the US that uses Fresnel lenses and fiber optics to pump sunlight indoors. The box tracks the sun all day and fiber optic wires feed that sun into the interior. Light is reduced 5% per meter, so while you can’t illuminate the lobby of a skyscraper—you can easily light a typical room for most of the day.

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