G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 7/10 (2006.01) B07C 5/34 (2006.01)
Patent
CA 2301733
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.
L'invention vise un procédé de lecture optique de reliefs (2) portés par la paroi externe (3) d'un récipient (4) transparent ou translucide. Selon l'invention, le procédé consiste: à éclairer le récipient (4) à l'aide d'un cône lumineux incident fourni par un système d'éclairage (10) placé en dessous du récipient; à régler la largeur du cône lumineux incident pour limiter l'éclairement à au moins la partie de la paroi externe pourvue des reliefs (2), afin d'éviter des réflexions parasites; à récupérer les faisceaux lumineux réfléchis, par l'élément optique (24) disposé en dessous du récipient et apte à former une image plane de la paroi de la bouteille; et à régler l'angle de champ de l'élément optique (24) en fonction des caractéristiques du récipient.
Garin Jean-Francois
Leconte Marc
Volay Philippe
Bsn
Robic
Tiama
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