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Projector with adjustably positioned image plate

  • US 6,609,797 B2
  • Filed: 01/22/2002
  • Issued: 08/26/2003
  • Est. Priority Date: 01/29/1999
  • Status: Expired due to Term
First Claim
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1. A method of projecting an image, comprising the steps of:

  • projecting the image contained in an image plate to form a projected image on an image-projection surface via an optical component, an optical axis of the optical component being positioned at a non-perpendicular angle with respect to the image-projection surface;

    collecting keystone correction data for ultimately correcting keystone distortion in the projected image;

    determining a conversion matrix based upon the keystone correction data for correcting the image contained in the image plate;

    correcting the image on the image plate based upon the conversion matrix to substantially eliminate the keystone distortion; and

    projecting the corrected image on the image plate onto the image-projection surface.

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