Identification card with a hologram and a process for the produc

Details Identification card with a hologram and a process for the produc Identification card with a hologram and a process for the produc

1979-03-05

1981-05-26

Corbin, John K.

Printed matter

Maps

40 22, 283 9R, 350 369, 350 383, G03H 102, G03H 104

Patent

active

042694736

ABSTRACT:
An identification card, which has an increased safeguard against counterfeiting, comprises both a hologram containing information and information which is visible recorded in a single layer of recording material disposed on a substrate. The card is produced by first recording the visible information on a layer and then recording a hologram in a portion of the layer. Since the hologram may include both the visible information of the card and information which is coded to be read only by a machine, the process for evaluating the hologram converts the reconstructed hologram into electrical signals by means of a vidicon. Then the signals, which correspond to the machine-readable coded information, are separated from the other signals and processed separately. A practical apparatus for recording the hologram on the card includes imaging optics for forming a demagnified real image of the overall view of the identification card and mirrors for reflecting the imaging beam path onto the portion of the card as an object wave for recording the hologram.

REFERENCES:
patent: 3620590 (1971-11-01), Barker
patent: 3643216 (1972-02-01), Greenaway et al.
patent: 3668795 (1972-06-01), Barker
patent: 3894756 (1975-07-01), Ward
patent: 4014602 (1977-03-01), Ruell
patent: 4126373 (1978-11-01), Moraw
patent: 4131337 (1978-12-01), Moraw et al.
patent: 4140373 (1979-02-01), Rull
patent: 4171766 (1979-10-01), Ruell
patent: 4171864 (1979-10-01), Jung et al.

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