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Optical Inspection of Food Products

Abstract: 

An optical inspection system for using laser-induced luminescence to detect the quality of organic materials, such as peanuts. The inspection system comprises an excitation means for illuminating a specimen to cause it to produce fluorescent radiation. The spectral representation of the fluorescence produced by the specimen is compared to a reference spectrum to obtain an indication of the physical characteristics of the specimen. In a preferred embodiment, the system identifies and removes peanuts contaminated with aflatoxin from a stream of peanuts by determining fluorescence at a predetermined wavelength.

Patent Number: 
4,866,283
Date Of Issue: 
09/12/1989
Inventors: 

Ralph H. Hill