Light scrambling system

  • US 7,422,354 B2
  • Filed: 06/11/2007
  • Issued: 09/09/2008
  • Est. Priority Date: 09/04/2003
  • Status: Active Grant
First Claim
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1. A light scrambling system comprising:

  • a substrate with a first surface and a second surface opposite the first surface; and

    a plurality of light pipes, each having a first end on the first surface of the substrate, a second end on the second surface of the substrate, and at least one inside surface formed by a refractive index boundary;

    wherein each light pipe is adapted to receive a light input at the first end and to transmit the light output at the second end;

    wherein the light input is received by the first end at a plurality of input angles, wherein the light output is transmitted at the second end at a plurality of output angles, and wherein at least a portion of the input angles are different from at least a portion of the output angles, thereby scrambling the light received by the first ends of the light pipes and transmitted by the second ends of the light pipes.

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