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Liquid crystal matrices

  • US 4,278,327 A
  • Filed: 11/26/1979
  • Issued: 07/14/1981
  • Est. Priority Date: 11/26/1979
  • Status: Expired due to Term
First Claim
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1. An optical switching matrix comprising:

  • first port means for propagating an input light beam having components in first and second linearly polarized states so as to intersect, at a predetermined angle and at a first location, a confined layer of electrooptically active nematic material for reflection of said first polarized state component and for transmission therethrough of said second polarized state component for forming respective second and third divergent light beams,polarization converter means for interchanging the respective polarizations of said respective second and third divergent light beams, andreflector means for redirecting said second and third light beams so as to intersect, at said predetermined angle and at a second location, said confined layer for redirecting said second and third light beams to form a combined light beam, said combined light beam propagating through second port means in substantially the same direction as said input light beam.

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