May 11, 2010 · I know of two companies that are offering this technology: the Swedish company Parans Solar Lighting, AB (through its U.S. distributor HUVCO Daylighting Solutions), and the Himawari Solar Lighting System from La Foret Engineering Company, Ltd. in Tokyo, Japan. Here's how the Parans system works: On the roof or an outside wall, there's a one-meter-square collector (the SP2) with 62 separate Fresnel lenses that track the sun as it moves across the sky.
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