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Combination light concentrating and collimating device and light fixture and display screen employing the same

  • US 5,810,469 A
  • Filed: 03/26/1993
  • Issued: 09/22/1998
  • Est. Priority Date: 03/26/1993
  • Status: Expired due to Fees
First Claim
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1. A combination light concentration and collimation apparatus comprisinga non-imaging light concentrator comprising an internally reflective body having an axis therethrough and having a polygonal cross-section in a plane perpendicular to its axis and having an input end and an output end;

  • and,a light collimator having an input end and an output end;

    wherein the output end of said concentrator is smaller than the input end of said collimator and is proximate to a focus of said collimator.

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