Abstract:
L'invention concerne un procédé d'observation et d'analyse de singularités optiques, consistant : - à éclairer l'extérieur du récipient à l'aide d'une surface lumineuse de symétrie axiale ( 6 ) autour d'un axe vertical ( Z ) parallèle à l'axe de symétrie des récipients, avec une variation d'une propriété de l'émission détectable par le ou les systèmes d'acquisition ( 11 ) suivant une génératrice de la surface lumineuse, - dans le cas de récipients de faible transmission, à réaliser la vue de la portion de récipient par le dispositif d'acquisition d'image recevant des faisceaux lumineux provenant d'une portion de la surface lumineuse ( 6 ) située du même côté du récipient, - ou dans le cas de récipients de forte transmission, à réaliser la vue de la portion de récipient par le dispositif d'acquisition d'image recevant des faisceaux lumineux provenant d'une portion de la surface lumineuse ( 6 ) diamétralement opposée par rapport au récipient.
Abstract:
The invention concerns a method for optically reading raised designs (2) borne by a transparent or translucent container (4) external wall (3), which consists in: illuminating the container (4) with an incident light cone supplied by a lighting system (10) placed beneath the container; adjusting the incident light cone width to restrict the illumination to at least the external wall portion bearing the raised designs (2) to avoid parasitic reflections; recuperating the reflected light beams with the optical element (24) placed beneath the container and capable of forming a planar image of the bottle wall; and adjusting the optical element (24) field angle according to the container characteristics.
Abstract:
The invention relates to an optical method of detecting surface defects and/or unfilled finish on the finish (3) of a container having an axis of symmetry X. The inventive method comprises the following steps consisting in: illuminating the surface (s) of the finish (3) of the container with an incident light beam and recovering the light beams reflected by the finish of the container using a matrix array camera, in order to determine the presence of a surface defect and/or unfilled finish. More specifically, the method consists in: using a uniform ring of light (C) which converges at a point of convergence located on the axis of symmetry (X) of the container and which has a variable diameter (D) and/or a variable width (E); and selecting a diameter (D) for the convergent light ring (C) with a given value in relation to the average incident angle (α) required to illuminate the surface (s) of the finish (3) of the container and/or a width (E) for the convergent uniform light ring (C) with a given value in relation to the width (L) of the surface (s) of the finish (3) of the container.
Abstract:
The invention relates to a method for visualizing of the flatness of a container (14) ring (16) surface, consisting: - illuminating the ring surface from above using a peripherally incident light beam comprising radial rays, with specular reflection on the ring surface, - forming, using an optical system (24, 124), a flat image of the ring surface, on a sensor (18), using a geometrical optical transformation which converts an actual height difference (dZ) into a radial image offset (dR) on the image, and the radial image offset (dR) corresponding to a unit actual height difference (dZ) being greater than the radial image offset corresponding to an actual radial offset of the same size. The invention also concerns a device and an apparatus implementing such a method.
Abstract:
The invention relates to a method of inspecting containers (3) moving between a linear camera and a light source (7) and exhibiting a continuous variation of luminous intensity according to a periodic pattern (7 1 ) along at least one direction of variation (D). According to the invention: for each increment of displacement of the container, a sequence of N Signs of successive images of the container is acquired cyclically, so that for each image line: the container (3) is illuminated by the light source (7), the image line of the container is acquired, the periodic pattern (7 1 ) is shifted for the next line along the direction of variation (D), at least one phase image line is calculated for each increment of the container (3), the phase image lines (LP(k)) are analyzed.