Variable Reflectance Mirrors and Windows

  • US 20090002822A1
  • Filed: 08/14/2008
  • Published: 01/01/2009
  • Est. Priority Date: 07/12/2004
  • Status: Active Grant
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First Claim
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1. An automotive rearview mirror, comprising:

  • a. a substantially transparent substrate having a first and a second surface;

    b. a polarization discriminating reflector optically coupled to the substrate, such that substantially all light incident on the second surface is transmitted through the substantially transparent substrate substantially unattenuated, while light characterized by a first polarization that is incident on the first surface is reflected back through the first surface in preference to light characterized by a second polarization, the second polarization being orthogonal to the first polarization,wherein overall reflection, by the rearview mirror, of light incident on the first surface exceeds 52 percent.

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