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Diffusely reflecting polarizing element including a first birefringent phase and a second phase

  • US 5,825,543 A
  • Filed: 02/29/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 02/29/1996
  • Status: Expired due to Term
First Claim
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1. An optical body, comprising:

  • a first phase having a birefringence of at least about 0.05; and

    a second phase, disposed within said first phase, whose index of refraction differs from said first phase by greater than about 0.05 along a first axis and by less than about 0.05 along a second axis orthogonal to said first axis;

    wherein the diffuse reflectivity of said first and second phases taken together along at least one axis for at least one polarization state of electromagnetic radiation is at least about 30%.

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