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Fiber optic solder joint inspection system

  • US 4,876,455 A
  • Filed: 02/25/1988
  • Issued: 10/24/1989
  • Est. Priority Date: 02/25/1988
  • Status: Expired due to Term
First Claim
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1. A method for determining the shape of an object having a specular surface comprising the steps of:

  • (a) projecting sequentially toward the object the light from each of a plurality of point light sources which are arranged in a fixed configuration about a common site at which the object is placed for inspection;

    (b) viewing the object at the common site to detect light patterns caused by the reflections of light of each point light source from the object surface;

    (c) interpreting the light patterns to determine the surface orientation of points on the object surface; and

    (d) reconstructing the object surface profile using the surface orientations of points on the object.

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