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Compensation for optical distortion at imaging plane

  • US 6,738,057 B1
  • Filed: 07/15/1999
  • Issued: 05/18/2004
  • Est. Priority Date: 12/22/1998
  • Status: Expired due to Term
First Claim
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1. An imaging device, comprising:

  • imaging optics to receive radiation from an object and to project an image of the object to an image plane, wherein said imaging optics produces a distortion having a distortion profile at least in a portion of said image; and

    a semiconductor sensor array located adjacent or at said image plane to receive said image and having a plurality of sensing pixels arranged relative to one another to substantially reduce a spatial component of the distortion profile produced by said imaging optics, to produce pixel signals indicative of said image of the object with a reduced distortion;

    wherein each sensing pixel has a photosensitive area whose size depends on an intensity component of said distortion profile, to correct a distortion in an intensity distribution across said sensor array.

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