Optical image comparison device for identification verification

Details Optical image comparison device for identification verification Optical image comparison device for identification verification

G - Physics

03

H

88/0.14

G03H 1/22 (2006.01) G07D 7/12 (2006.01) G07F 7/12 (2006.01)

Patent

CA 1097107

ABSTRACT OF THE DISCLOSURE Disclosed are a method and apparatus for verifying an identification card or the like having visible indicia thereon and also having on a portion thereof a hologram of said visible indicia as originally placed on the identification card. The method comprises the steps of: producing an optical image of the visible indicia on the identification card; producing a reconstructed image of the hologram on the identification card; projecting the optical image and the reconstructed holographic image, in superimposed register, and either continuously or intermittently, e.g., alternately, upon a common optical image plane; and comparing the images on the image plane. The apparatus comprises suitable optical elements for carrying out these steps using either a single laser light source or such a light sourc together with a conventional light source. -1-

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