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Projection-type display apparatus

  • US 20030193649A1
  • Filed: 10/10/2002
  • Published: 10/16/2003
  • Est. Priority Date: 04/11/2002
  • Status: Active Grant
First Claim
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1. A projection-type display apparatus comprising:

  • a light source;

    an integrator whose input plane receives a light emitted from the light source and whose output plane serves as a surface illuminant;

    an image forming device modulating an incident linearly-polarized light beam to form an image in accordance with a video signal;

    a polarization-conversion device converting a uniform light beam exiting from the integrator into a linearly-polarized light beam to be applied to the image forming device; and

    a projection device projecting the image formed by the image forming device;

    wherein the light source comprises a light emitting diode.

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