Method and apparatus for detecting inferior container

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

G - Physics

01

N

340/124.5

G01N 21/90 (2006.01)

Patent

CA 1234610

ABSTRACT OF THE DISCLOSURE In a method for detecting an inferior contai- ner, wherein: light beams are projected in different two directions upon a side of a transparent or a semitranspa- rent test container while the container is rotatably diven; both of a transmitted beam which is one of the above light beams, having penetrated through the container, and a ref- lected 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 sur- face; and an inferior container is detected by means of a shadow formed in this image.

477537

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