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Projector using a small-size optical system

  • US 5,853,240 A
  • Filed: 12/19/1996
  • Issued: 12/29/1998
  • Est. Priority Date: 12/22/1995
  • Status: Expired due to Term
First Claim
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1. A small-size liquid-crystal projector comprising:

  • a liquid-crystal display;

    a back-light for illuminating the liquid-crystal display;

    a projecting optical device including a refracting element having a half-mirror coat on a curved surface thereof, a circularly polarized light selecting semitransparent mirror and a quarter-wave plate interposed between the liquid-crystal display and the circularly polarized light selecting semitransparent mirror, which components are disposed in turn from the liquid-crystal display side; and

    optical correcting means for optically correcting distortion of a projectable image.

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