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Assembly suitable for determining a surface topology of a workpiece

  • US 5,402,238 A
  • Filed: 08/31/1992
  • Issued: 03/28/1995
  • Est. Priority Date: 08/31/1992
  • Status: Expired due to Term
First Claim
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1. An assembly for determining a surface topology of a workpiece, said assembly comprising:

  • (a) a projectile;

    (b) means for coupling the projectile to the workpiece surface and for imparting an initial momentum to the projectile with respect to the surface;

    (c) an electronic camera including a megapixel two-dimensional array positioned to view the surface normal to the surface, said camera recording relative movement of the projectile with respect to the surface including a locus of at least hundreds of positional points over time of the projectile on the surface; and

    ,(d) means using said locus of positional points for determining the surface topology of the workpiece.

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