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High efficiency optical devices

  • US 20040175552A1
  • Filed: 11/03/2003
  • Published: 09/09/2004
  • Est. Priority Date: 06/26/1995
  • Status: Active Grant
First Claim
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1. An optical device comprising opposing optical surfaces arranged to form a wedge, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, and further wherein at least one of the materials has a stress induced birefringence.

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