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Liquid crystal projector

  • US 4,770,525 A
  • Filed: 03/12/1987
  • Issued: 09/13/1988
  • Est. Priority Date: 03/24/1986
  • Status: Expired due to Term
First Claim
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1. A liquid crystal projector comprising:

  • a light source;

    a transmission liquid crystal display panel irradiated with a light beam from said light source and having a rectangular display portion;

    a projection lens, arranged on a line extending from an optical axis obtained by connecting said light source and said liquid crystal display panel, for enlarging an image displayed on said liquid crystal panel onto a screen; and

    optical means, arranged between said light source and said liquid crystal display panel, for narrowing the light beam along a widthwise direction of said rectangular display portion of said liquid crystal display panel, wherein said optical means comprises an eccentric linear Fresnel lens, the center of which is deviated from the optical axis of said light source by a predetermined distance.

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