Container inspecting apparatus

Details Container inspecting apparatus Container inspecting apparatus

G - Physics

01

N

33/32

G01N 21/90 (2006.01)

Patent

CA 1316687

ABSTRACT OF THE DISCLOSURE An inspecting apparatus comprises an illuminator, a light sensor positioned on one side of the path of move- ment of containers opposite to the illuminator for receiving rays of light which have passed through the container, rays of light reflected from the container and rays of light travelling straight from the illuminator towards the light sensor within a predetermined region exteriorly of the container, a detector for analyzing the rays of light received by the light sensor, and a light absorbing member positioned diagonally rearwardly of the container as viewed in a direction from the light sensor towards the illuminator for shielding rays of light passing through the thickness of each of opposite wall portions of the container, whereby a line of shade following the contour of the container can be formed on the side of the light sensor for accentuating the boundary between the container, illuminated by the rays of light from the illuminator, and the predetermined region exteriorly of the container that is defined by the rays of light travelling straight towards the light sensor.

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