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Optical stereo video signal processor

  • US 4,556,986 A
  • Filed: 03/09/1983
  • Issued: 12/03/1985
  • Est. Priority Date: 03/09/1983
  • Status: Expired due to Fees
First Claim
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1. A method for obtaining parallax data, such as the range of a particular target, including the steps of:

  • (a) producing first and second representations of the target, the first representation being slightly offset from said second representation;

    (b) displaying said first and second representations of the target, on respective first and second displays;

    (c) directing a polarized and collimated beam of light at the output planes of a first liquid crystal light valve and a second liquid crystal light valve;

    (d) directing the information provided on the face of said first display to the input plane of said first liquid crystal light valve and the information provided on the face of said second display to the input plane of a second liquid crystal light valve, said present step being performed simultaneously with directing the polarized and collimated beam of light at the output planes of said first and second liquid crystal light valve;

    (e) superimposing the images produced on the output planes of said first and second liquid crystal light valves on a video detector, wherein the images produced on the output planes of said first and second liquid crystal light valves are proportional to the images impressed on the input planes of said first and second liquid crystal light valves; and

    (f) producing a peak correlation signal on said video detector, said peak correlation signal being indicative of the range of the target.

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