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Stereoscopic gage and gaging system

  • US 3,894,802 A
  • Filed: 12/26/1973
  • Issued: 07/15/1975
  • Est. Priority Date: 04/16/1973
  • Status: Expired due to Term
First Claim
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1. A system for gaging the surface of an object comprising:

  • means for supporting the object in a predetermined Position;

    means having a fixed relationship to said supported object for optically imaging from spatially separated vantage points two complementary stereoscopic patterns on the surface of said supported object each stereoscopic pattern having at least one coded image, and each coded image in one of said patterns has a complementary image in the other of said patterns, said complementary image in said other pattern having a code different from the code of the images in said one pattern, and each image in said one pattern and its complementary image in said other pattern form a set, wherein the relationship of the two images in each set is indicative of the conformity of the object'"'"''"'"'s surface to the desired position at the location of the set, means for generating electrical signals indicative of the location of each coded image on the surface of the object, means for correlating the electrical signals indicative of the two coded images in each set to generate error signals indicative of the correspondence of the object'"'"''"'"'s surface to the desired position at the location of each set; and

    means for generating a visual indication of the departure of the surface being gaged from said desired position at the location of each set in response to said error signals.

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