CARD GENUINE JUDGING APPARATUS AND CARD GENUINE JUDGING SYSTEM

摘要

A card genuine judging apparatus for judging whether a card (1) is genuine o r 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 havin g 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).