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Birefringent interference polarization

  • US 6,583,930 B1
  • Filed: 12/23/1998
  • Issued: 06/24/2003
  • Est. Priority Date: 06/20/1989
  • Status: Expired due to Fees
First Claim
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1. A broadband birefringent reflective polarizer comprising a bireffingent material arranged in optical repeating units disposed spatially along a thickness axis of the reflective polarizer, each optical repeating unit having a corresponding wavelength for which light of a first polarization is substantially reflected while light of a second polarization is substantially transmitted, the optical repeating units being graded along the thickness axis of the reflective polarizer such that a broadband of incident light is polarized by the reflective polarizer.

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