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METHOD FOR DETERMINING DISTANCES

  • US 3,610,754 A
  • Filed: 11/21/1968
  • Issued: 10/05/1971
  • Est. Priority Date: 11/24/1967
  • Status: Expired due to Term
First Claim
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1. A method of determining the distance of a point on a surface from a given point, comprising directing a beam of electromagnetic radiation from said given point along a given axis of emission onto said surface;

  • receiving rays reflected from said surface, by means of a television camera having an objective lens having an optical axis which is fixed in relation to said axis of emission, whereby an image of said point on the surface is formed on said photosensitive screen;

    electronically scanning said photosensitive screen;

    measuring the time taken to scan between a given reference point and said image; and

    calculating said distance from said time.

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