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Display apparatus

  • US 20040218124A1
  • 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 display apparatus comprising:

  • (a) a light source for forming a beam of light;

    (b) a wire grid pre-polarizer for polarizing said beam of light to provide a polarized beam of light;

    (c) a wire grid polarization beamsplitter for receiving said polarized beam of light, for transmitting said polarized beam of light having a first polarization, and for reflecting said polarized beam of light having a second polarization;

    (d) a reflective liquid crystal device for selectively modulating said polarized beam of light having a first polarization to encode image data thereon in order to form a modulated beam, and for reflecting said modulated beam back to said wire grid polarization beamsplitter;

    (e) a first compensator located between said wire grid polarization beamsplitter and said reflective liquid crystal device, for conditioning oblique and skew rays of said modulated beam to provide a compensated modulated beam;

    (f) a wire grid polarization analyzer which removes residual light of the opposite polarization;

    (g) a second compensator for conditioning oblique and skew rays of said wire grid polarization beamsplitter relative to said wire grid polarization analyzer and said wire grid pre-polarizer; and

    (h) image-forming optics for forming an image from said compensated modulated beam.

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