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Proceedings Paper

Optical 3D measurement of objects with technical surfaces
Author(s): J. Gerber
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Paper Abstract

The digitalization of CAD-models, the complete manufacturing control and the timely quality control of components are important tasks of modern industrial inspection. In many cases the 3D-object shape as well as its deviation from a certain master object is of special interest, whereas optical measuring techniques based on structured light find increasing application /1 - 4/. Unfortunately, as a rule the application of these optical 3D-inspection systems leads to difficulties if the surfaces under test are strongly structured yielding to a shadowing within the image field. Moreover, distortions appear if the detector records too high light intensities in some ranges of the image caused by light reflection and diffraction at the surface of the object. So, within these ranges of the image one could not get useful values of measurement of the coordinates. The method of structured illumination allows the development of a concept of measurement which can avoid these illumination-caused difficulties.

Paper Details

Date Published: 1 September 1996
PDF: 2 pages
Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778E9 (1 September 1996); doi: 10.1117/12.2316202
Show Author Affiliations
J. Gerber, Fraunhofer-Institute for Applied Optics and Precision Mechanics (Germany)

Published in SPIE Proceedings Vol. 2778:
17th Congress of the International Commission for Optics: Optics for Science and New Technology
Joon-Sung Chang; Jai-Hyung Lee; ChangHee Nam, Editor(s)

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