Inspection apparatus for containers with transparent bottoms

Details Inspection apparatus for containers with transparent bottoms Inspection apparatus for containers with transparent bottoms

1976-10-08

1978-04-11

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Containers or enclosures

250223B, G01N 2132

Patent

active

040836371

ABSTRACT:
Inspection equipment for detection of foreign matter particles in the bottom area of containers with transparent bottoms, such as glass bottles. The equipment has a driven rotor the front face of which lies in the image plane of a projection optic with the illuminated bottle bottom serving as the object plane. The rotor has a first optical element in the form of a radially extending mirror which focuses the incident radiation on a fixed position photoelectric element. The output signal of the photoelectric element feeds an evaluator which responds to a certain decrease of the incident light intensity. The rotor is provided with a second optical element which is responsive to radiation from the center of the container bottom and which signals a second photoelectric cell, which feeds a second evaluator.Both evaluators signal container reject mechanism.

REFERENCES:
patent: 3191773 (1965-06-01), Wyman
patent: 3292785 (1966-12-01), Calhoun
patent: 3415370 (1968-12-01), Husome

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