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, Clive Butler, Roy Duggan, 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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