The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1994
Filed:
Mar. 23, 1992
Applicant:
Inventors:
Klaus-P Koch, Aalen, DE;
Ralf Peter, Aalen, DE;
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356372 ; 356375 ; 356378 ; 356376 ; 250561 ;
Abstract
The invention is directed to a method and arrangement for detecting edges and bores on a workpiece with an optical probe head. The optical probe head is guided with constant beam power over the workpiece surface for detecting the edges and bores. In addition to the distance signal of the probe head, the intensity of the radiation backscattered from the workpiece is determined and stored. With the intensity values simultaneously stored with the coordinates of the workpiece surface in the region of the edges and bores, the coordinates of the edges and bores are determined from abrupt changes of the trace of the intensity.