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Proceedings Paper

Laser Scanning Techniques For Automatic Inspection Of Heat-Sealed Film Packages
Author(s): William E. Wolf
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Paper Abstract

Many products in the food and drug industry are sold in heat-sealed translucent film packages. Automatic inspection of these packages before shipment to the customer is an important step in assuring quality. This paper describes a laser scanner and associated electro-optical and electronic system for inspecting blister packages which also serve as reaction vessels, identifying and classifying defects for process control in an on-line situation. This system is a practical application of a coherent light scanner which utilizes spatial filtering and a transform plane array of optical sensors for performing some of the signal processing necessary for defect detection and classification. Automatic registration in 2 dimensions is incorporated, thus relaxing the positional accuracy requirements of the product handling system.

Paper Details

Date Published: 23 May 1983
PDF: 7 pages
Proc. SPIE 0360, Robotics and Industrial Inspection, (23 May 1983); doi: 10.1117/12.934108
Show Author Affiliations
William E. Wolf, E.I. du Pont de Nemours and Company (United States)


Published in SPIE Proceedings Vol. 0360:
Robotics and Industrial Inspection
David P. Casasent, Editor(s)

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