System for inspecting the inside surfaces of a container for def

Details System for inspecting the inside surfaces of a container for def System for inspecting the inside surfaces of a container for def

1988-10-07

1990-05-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356241, G01N 2188

Patent

active

049241079

ABSTRACT:
A system for inspecting a plurality of horizontal regions on the inside surfaces of an object such as an aluminum beverage can for defects. This system utilizes a plurality of cameras with each camera focused, in a field of view, on one of the plurality of horizontal regions in the object, the light for illuminating the inside of the object, an including dot for selectively masking out areas of reflected interfering light, and a processor for analyzing the captured image of the horizontal region when illuminated.

REFERENCES:
patent: 3923158 (1975-12-01), Forn.ang..ang.
patent: 4786801 (1988-11-01), Shay
patent: 4811251 (1989-03-01), Minato
Fast Track--High-Speed Automated Inspection System by Ball Industrial Systems Division--Printed in USA 7/88.

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