Device for simultaneously inspecting an object for defects and d

Details Device for simultaneously inspecting an object for defects and d Device for simultaneously inspecting an object for defects and d

1990-02-14

1992-07-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356240, G01N 904

Patent

active

051342782

ABSTRACT:
A device for inspecting an object for defects and debris having a first light and a second light to create two images of the object, and a system of mirrors and lenses to direct the images to a sensing station, typically a video camera. A first embodiment uses two sources of light, a first parallel annular bundle and a second diffuse source, to inspect an open holder, such as an aluminum can without a lid, for defects and debris. A second embodiment uses two sources of diffuse light to inspect a cylindrical glass tube, such as a fluorescent light bulb, for defects and debris.

REFERENCES:
patent: 4083637 (1978-04-01), Ellinger et al.
patent: 4136930 (1979-01-01), Gomm et al.
patent: 4180722 (1979-12-01), Clewans
patent: 4221961 (1980-09-01), Peyton
patent: 4520388 (1985-05-01), Kellie
patent: 4551627 (1985-11-01), Reich
patent: 4650326 (1987-03-01), Nagamine et al.
patent: 4682023 (1987-07-01), Yoshida
patent: 4943713 (1990-07-01), Yoshida

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