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Sensor for determining the angular position of a radiating point source in two dimensions

  • US 20050105081A1
  • Filed: 11/13/2003
  • Published: 05/19/2005
  • Est. Priority Date: 11/13/2003
  • Status: Active Grant
First Claim
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1. A sensor for determining the angular position of a radiating point source in two dimensions, comprising:

  • a) a point source of light located in a prescribed space;

    b) a light detector adjacent said space;

    c) a two dimensional mask interposed between said detector and said space, said mask having a two dimensional pseudo-random surface pattern defining a prescribed degree of transmissivity;

    d) whereby light from said source travels through said mask and onto said detector, said surface pattern causing said detector to sense two correlation signal peaks usable to indicate incident angle between said source and detector in two dimensions.

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