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Proceedings Paper

Optics For Food Quality Analysis
Author(s): Gerald S. Birth; George Eisler
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Paper Abstract

The most common application of optics to nondestructive quality evaluation of raw product is for color and appearance analysis. An application less familiar to consumers is automatic sorting, where each unit is evaluated and the defective units are removed. Devices for sorting beans, peanuts, and other small products by comparing the reflectance of the product to a standard have been in use for more than 30 years. With these devices each bean is examined on both sides while in free-fall and accepted or rejected. The operation is sufficiently rapid so that it is economically feasible to sort commercial volumes of these crops.

Paper Details

Date Published: 8 May 1971
PDF: 1 pages
Proc. SPIE 0170, Optics in Quality Assurance II, (8 May 1971); doi: 10.1117/12.957020
Show Author Affiliations
Gerald S. Birth, Richard B. Russell Research Center (United States)
George Eisler, Agro Electronics (United States)


Published in SPIE Proceedings Vol. 0170:
Optics in Quality Assurance II
Harvey L. Kasdan, Editor(s)

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