G - Physics – 01 – B
Patent
G - Physics
01
B
340/124.6
G01B 11/04 (2006.01) G01J 1/18 (2006.01)
Patent
CA 1041629
ABSTRACT OF THE DISCLOSURE Apparatus for detecting the presence of extraneous matter and/or cracks in translucent containers and in particular translucent containers in which the color density and/or wall thickness vary significantly from container to container which includes a vertically scanning spot beam of light which is projected through the container to generate an electrical inspection signal corresponding to the amount of light passing through the container. This electrical inspection signal is compared with a predetermined electrical acceptance signal, which is a function of the vertical position of the spot beam of light relative to the container. There is an ambient light correction provision and for coloured containers either the inspection signal or the acceptance signal is altered during the inspection process to take account of the colour density and/or wall thickness.
204282
O'connor Bartholomew J.
Teoranta Talcoma
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