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Substrate-Guided Optical Device with Wide Aperture

  • US 20080198471A1
  • Filed: 06/16/2005
  • Published: 08/21/2008
  • Est. Priority Date: 06/17/2004
  • Status: Active Grant
First Claim
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1. An optical device, comprising:

  • a light-transmitting substrate having at least two major surfaces parallel to each other and edges;

    optical means for coupling light into said substrate, andat least one reflecting surface located in said substrate which is non-parallel to said major surfaces of the substrate characterized in that said optical means for coupling light into said substrate is a partially reflecting surface, wherein part of the light coupled into the substrate passes through the partially reflecting surface out of said substrate and part of said light is reflected into the substrate by total internal reflection.

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