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Optical tracking system utilizing spaced-apart detector elements

  • US 4,227,077 A
  • Filed: 02/26/1973
  • Issued: 10/07/1980
  • Est. Priority Date: 02/26/1973
  • Status: Expired due to Term
First Claim
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1. In combination:

  • a plurality of elements spaced apart in a first dimension and in a second dimension, said elements being responsive to radiant energy for providing a signal when illuminated by such energy;

    means for directing rays of radiant energy towards said elements such that successive ones of said rays impinge sequentially in a first dimension and in a second dimension upon selected ones of said elements; and

    means coupled to said directing means for selecting a number of said elements upon which said rays are to impinge, said directing means scanning said rays along arcuate paths, said directing means including means for varying the radii of said arcuate paths, said selecting means comprising;

    first means responsive to said signals of said elements for signaling the position of one of said elements relative to one of said arcuate paths;

    second means responsive to said signals of said elements for signaling the position of a second one of said elements relative to one of said arcuate paths; and

    third means responsive to said first and to said second signaling means for selecting an arcuate path providing for said impinging of said rays of radiant energy upon a said number of said elements.

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