Testing or inspecting apparatus and method for detecting differe

Details Testing or inspecting apparatus and method for detecting differe Testing or inspecting apparatus and method for detecting differe

1987-02-24

1990-01-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356431, G01N 2188

Patent

active

048915300

ABSTRACT:
In a testing or inspecting apparatus for the detection of objects, which have differently formed surfaces and are moved relative to the testing apparatus, the object (12) to be tested is illuminated in a plane at right angles to the main movement direction (arrow 14) with substantially an identical intensity over a narrow zone extending over the width of the object. A detection device detecting the reflected brightness and/or color values of the object, responding to changes to the detected values in the illuminated plane, supplies an information signal, which is interpreted by a computer (FIG. 1).

REFERENCES:
patent: 3920970 (1975-11-01), Slaker
patent: 3958127 (1976-05-01), Faulhaber et al.
patent: 4403294 (1983-09-01), Hamada et al.

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