Card genuine judging apparatus and card genuine judging system

Details Card genuine judging apparatus and card genuine judging system Card genuine judging apparatus and card genuine judging system

G - Physics

06

K

G06K 17/00 (2006.01) B42D 15/10 (2006.01) G06K 7/10 (2006.01) G06K 7/12 (2006.01) G06K 9/76 (2006.01) G06K 19/16 (2006.01) G07F 7/08 (2006.01)

Patent

CA 2376890

A card genuine judging apparatus for judging whether a card (1) is genuine or not by using a lattice pattern image produced based on a reflected/refracted beam of light, comprising a light projecting system (22) for projecting a measurement laser beam Q1 onto a hologram provided on the card (1) and having an image (4') formed on the basis of a lattice pattern (3), a Fourier transform lens (27) for forming a lattice pattern image from a reflected/refracted light beam reflected from the hologram on a light- receiving part (28), and judging means (30') for judging the genuine of the card (1) on the basis of the photoelectric output from the light-receiving part (38).

Cette invention se rapporte à un appareil d'évaluation de l'authenticité d'une carte, qui sert à évaluer si une carte (1) est authentique ou non en utilisant une image à motifs en treillis produite sur la base d'un faisceau réfléchi/réfracté de lumière, cet appareil comprenant un système de projection de lumière (22) servant à projeter un faisceau laser de mesure Q1 sur un hologramme placé sur la carte (1) et ayant une image (4') formée sur la base d'un motif en treillis (3), une lentille de transformation de Fourrier (27) servant à former sur une partie réceptrice de lumière (28) une image à motifs en treillis à partir du faisceau lumineux réfléchi/réfracté provenant de l'hologramme, et un moyen d'évaluation (30') servant à évaluer l'authenticité de la carte (1) sur la base de la sortie photoélectrique de la partie recevant la lumière (38).

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