Method and device for inspecting sidewall of bottle

Details Method and device for inspecting sidewall of bottle Method and device for inspecting sidewall of bottle

1989-04-12

1990-05-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356240, 209525, G01N 904

Patent

active

049240838

ABSTRACT:
A method and a device for inspecting the sidewall of a bottle is disclosed. In the method and device for inspecting the sidewall of the bottle, an elongate illumination portion is moved to irradiate illumination light to the sidewall of the bottle to be inspected, an elongate observation portion moved synchronously with the elongate illumination portion to observe the illumination light transmitted through the sidewall of the bottle, and based on an image of the transmitted light, the presence of defects is judged. Light blocking defects and refractional defects on the sidewall of the bottle can be detected with high precision.

REFERENCES:
patent: 4367405 (1983-01-01), Ford
patent: 4399357 (1983-08-01), Dorf
patent: 4655349 (1987-04-01), Joseph

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