Falsification-proof identification card having a Lippmann-Bragg

Details Falsification-proof identification card having a Lippmann-Bragg Falsification-proof identification card having a Lippmann-Bragg

1977-02-22

1979-10-23

Cook, Daryl W.

Registers

Records

235457, 350 361, 40 22, 283 7, G06K 1906, G06K 710, G03H 104, G09F 302

Patent

active

041717660

ABSTRACT:
An identification card with a holographic security safeguard in the form of a large area Lippmann-Bragg hologram recorded on a layer or sheet-like carrier disposed on a face of the identification card, capable of being read out without the use of laser light, employing merely normal light sources which produce incoherent light, whereby an image can be observed with the naked eye, and which can contain both binary and analog information, comparable, for example, with printed and other information contained on the identification card; and a method of producing such a card.

REFERENCES:
patent: 3532406 (1970-10-01), Hartman
patent: 3580655 (1971-05-01), Leith et al.
patent: 3812328 (1974-05-01), Tramposch
patent: 3838252 (1974-09-01), Hynes et al.
patent: 4014602 (1977-03-01), Ruell

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