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Proceedings Paper

Optical Enhancement Of Surface Contour Variations For Sheet Metal And Plastic Panel Inspection
Author(s): Rodger L. Reynolds; Omer L. Hageniers
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Paper Abstract

The use of the DiffractoSight (D Sight) technique, is shown to be an effective inspection method for the observation, rating and cataloguing of defects on sheet metal and plastic automotive body panels. Using a standard television camera and a high intensity light source, in conjunction with a retroreflective screen, small localized slope variations in a surface can be converted to grey scale information. The benefits of the system are highlighted by its essential simplicity, high sensitivity to contour changes, low sensitivity to part positioning and its wide field of view capability. The technique is shown to have much to offer in improving process control and monitoring product quality in the stamping, composite and molding industry. Results from laboratory and field installations are used to verify the advantages of the D Sight' approach to surface quality inspection.

Paper Details

Date Published: 16 January 1989
PDF: 9 pages
Proc. SPIE 0954, Optical Testing and Metrology II, (16 January 1989); doi: 10.1117/12.947591
Show Author Affiliations
Rodger L. Reynolds, Diffracto Limited (Canada)
Omer L. Hageniers, Diffracto Limited (Canada)

Published in SPIE Proceedings Vol. 0954:
Optical Testing and Metrology II
Chander Prakash Grover, Editor(s)

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