Optical Enhancement Of Surface Contour Variations For Sheet Metal And Plastic Panel Inspection

Rodger L. Reynolds; Omer L. Hageniers

doi:10.1117/12.947591

16 January 1989 Optical Enhancement Of Surface Contour Variations For Sheet Metal And Plastic Panel Inspection

Rodger L. Reynolds, Omer L. Hageniers

Proceedings Volume 0954, Optical Testing and Metrology II; (1989) https://doi.org/10.1117/12.947591
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

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.

Citation Download Citation

Rodger L. Reynolds and Omer L. Hageniers "Optical Enhancement Of Surface Contour Variations For Sheet Metal And Plastic Panel Inspection", Proc. SPIE 0954, Optical Testing and Metrology II, (16 January 1989); https://doi.org/10.1117/12.947591

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