Method and apparatus for detecting inferior container

Details Method and apparatus for detecting inferior container Method and apparatus for detecting inferior container

1985-03-18

1987-05-12

Rosenberger, R. A.

Optics: measuring and testing

By inspection with agitation or rotation

Of containers

209526, 250223B, G01N 2190

Patent

active

046645250

ABSTRACT:
In a method for detecting an inferior container, wherein: light beams are projected in different two directions upon a side of a transparent or a semitransparent test container while the container is rotatably driven; both of a transmitted beam which is one of the above light beams, having penetrated through the container, and a refelected beam which is the other of the above light beams, having reflected from the container are simultaneously received by a common photo-receptive surface; a composite image constructed of both of the transmitted beam and the reflected beam is projected upon this photo-receptive surface; and an inferior container is detected by means of a shadow formed in this image.

REFERENCES:
patent: 3439178 (1969-04-01), Rottmann
patent: 4280624 (1981-07-01), Ford
patent: 4500203 (1985-02-01), Bieringer

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