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Modulation optical system

  • US 20040218125A1
  • Filed: 05/27/2004
  • Published: 11/04/2004
  • Est. Priority Date: 01/07/2002
  • Status: Active Grant
First Claim
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1. A modulation optical system for providing high contrast modulation of an incident light beam, comprising:

  • (a) a wire grid pre-polarizer for pre-polarizing said beam of light;

    (b) a transmissive liquid crystal device for selectively modulating said polarized beam of light having to encode image data thereon in order to form a modulated beam;

    (c) a wire grid polarization analyzer which transmits said modulated beam and blocks light of the opposite polarization; and

    (d) a compensator located between said wire grid pre-polarizer and said wire grid polarization analyzer which conditions oblique and skew rays.

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