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Image display system

  • US 7,483,015 B2
  • Filed: 02/10/2005
  • Issued: 01/27/2009
  • Est. Priority Date: 02/17/2004
  • Status: Expired due to Fees
First Claim
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1. An image display system comprising:

  • a projector for projecting a first image;

    a transparent screen on a rear plane of which the first image projected by the projector is focused, and on a front plane of which a second image formed by and indication portion indicating the first image is reflected;

    an image taking device for taking a rear plane image of the second image and outputting image data thereof; and

    a position detector for detecting a position indicated by the indication portion based on the image data,wherein the second image comprises a complete shadow portion and a half shadow portion, andwherein the complete shadow portion and the half shadow portion are formed by a reflection of the indication portion.

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