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Light guide optical device

  • US 8,004,765 B2
  • Filed: 10/14/2008
  • Issued: 08/23/2011
  • Est. Priority Date: 03/21/2002
  • Status: Expired due to Fees
First Claim
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1. An optical device, comprising:

  • a first light-transmitting substrate having at least two major surfaces and edges, at least one reflecting surface located between the two major surfaces of the substrate for partially reflecting light waves; and

    a transparent layer, thinner than the substrate, having at least two major surfaces, one of the major surfaces of the transparent layer being attached to a major surface of the first light-transmitting substrate,wherein light waves coupled inside the first light-transmitting substrate traverse the first substrate and the transparent layer and are reflected off a second of the two major surfaces of the transparent layer, by total internal reflection.

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