Vorrichtung zur Erzeugung, Abtastung und Erkennung einer Kontur-Abbildung eines Flüssigkeitsbehälters

摘要

A device for generating, detecting and recognizing a contour image of a liquid container (5), comprising a light source (1), light detector means (4), means for directing light rays received from said light source as parallel rays transversely of a path travel led 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 comprise Fresnel lenses (2, 3) which are coaxially and respectively located at opposite longitudinal sides of said path, said light source (1) suitably being a stationary light emitting diode capable of emitting light towards said first Fresnel lens (2). Said light detector means (4) is a TV camera, e.g. of the CCD type capable of detecting a container contour highlighted by light not hidden by the container, light refracted at the container contour and any light passing through said container. <IMAGE>