Sensing location of an object

  • US 4,574,199 A
  • Filed: 01/27/1983
  • Issued: 03/04/1986
  • Est. Priority Date: 01/27/1983
  • Status: Expired due to Term
First Claim
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1. An apparatus for sensing the presence or location of an object in a plane perpendicular to a reference axis comprising:

  • optical detector means for optically detecting by use of optical triangulation techniques the presence or approximate location of the object in the plane perpendicular to the reference axis;

    contact detector means for contacting the object in the plane perpendicular to the reference axis and for determining the precise location of the object; and

    moving means for moving said optical detector means and said contact detector means relative to the object along the reference axis.

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