15 February 1989 Automatic Inspection Of Components Using Profile Projection
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Proceedings Volume 1010, Industrial Inspection; (1989) https://doi.org/10.1117/12.949243
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany
Profile projectors, also known as optical comparators or shadowgraphs, are normally employed in a manual mode for the inspection of engineering components. Traditionally the projected and enlarged shadow image of an object is compared with a large scale transparency of the desired form of an object profile. More recent versions employ digital transducer scales and 'edge-sensors' to allow measurements of X, Y coordinates of points around the profile. The development of reliable sensing devices has now allowed the measurement process to be carried out completely automatically. Although currently restricted to 2-dimensional operation, the system produces output data in a similar manner to co-ordinate measuring machines, which are now very widely used in the engineering industry.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Clive Butler, Roy Duggan, "Automatic Inspection Of Components Using Profile Projection", Proc. SPIE 1010, Industrial Inspection, (15 February 1989); doi: 10.1117/12.949243; https://doi.org/10.1117/12.949243


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