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Switchable polymer-dispersed liquid crystal optical elements

  • US 7,265,903 B2
  • Filed: 11/08/2005
  • Issued: 09/04/2007
  • Est. Priority Date: 07/12/1996
  • Status: Expired due to Fees
First Claim
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1. A polarization diversity system comprising:

  • a first polarizing beam splitter for receiving an input beam of light and splitting the input beam of light into a first beam of light polarized in first direction and a second beam of light polarized in a second direction;

    a first optical path comprising;

    a first deflector made from polymer-dispersed liquid crystal elements;

    a half-wave plate;

    a second deflector made from polymer-dispersed liquid crystal elements; and

    a mirror, wherein the first optical path receives the first beam of light polarized in a first direction from the first polarizing beam splitter and outputs the first beam of light polarized in a second direction;

    a second optical path comprising;

    a mirror;

    a third deflector made from polymer-dispersed liquid crystal elements;

    a half-wave plate; and

    a fourth deflector made from polymer-dispersed liquid crystal elements, wherein the second optical path receives the second beam of light polarized in a second direction from the first polarizing beam splitter and outputs the second beam of light polarized in a first direction; and

    a second polarizing beam splitter for receiving the outputted first beam of light polarized in a second direction from the first optical path and the outputted second beam of light polarized in a first direction from the second optical path.

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