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LED-based edge lit illumination system

  • US 8,324,640 B2
  • Filed: 07/02/2004
  • Issued: 12/04/2012
  • Est. Priority Date: 07/02/2004
  • Status: Active Grant
First Claim
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1. An edge lit lighting assembly comprisingan LED light source;

  • an optically transmissive lightguide having an input surface, a back surface, and an output surface; and

    a radiation conversion material capable of absorbing at least a portion of the radiation at a first wavelength emitted by the LED and emitting a second radiation at a second wavelength;

    wherein said radiation conversion material is coated on said output surface of said lightguide.

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