Device for generating, detecting and recognizing a contour image

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Patent

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Details

356240, G01N 904, G01N 2190

Patent

active

058981691

ABSTRACT:
A device for generating, detecting and recognizing a contour image of a liquid container, such as at least partly transparent, colored or non-colored bottles comprising a light source, light detector means, means for directing light rays received from said light source as parallel rays transversely of a path travelled by said container, and for conveying to said light detector means light rays which are not refracted or hidden by said container, processing means connected to said light detector means for processing signals from said detector means which are indicative of such detected light rays, and means for comparing such processed signals with predetermined container feature data to recognize said contour image of the container. The means for directing light rays suitably comprises a Fresnel lens which is located at a longitudinal side of said path, and a planar mirror located at an opposite longitudinal side of said path, said light source e.g. being a stationary light emitting diode capable of emitting light towards a lens. Said light detector means is suitably a TV camera, e.g. of the CCD type capable of detecting a container contour highlighted by light not hidden or refracted by the container.

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