Laser engraved verification hologram and associated methods

Details Laser engraved verification hologram and associated methods Laser engraved verification hologram and associated methods

1992-07-31

1994-07-19

Look, Edward K.

Optical: systems and elements

Holographic system or element

Authentication

359 8, 283 86, 356 71, G02B 518

Patent

active

053314433

ABSTRACT:
A method for increasing the authentication effect of a verification hologram to be affixed to a protected document includes laser etching individualized indicia into the reflective layer of each hologram produced en masse on a moving, continuous web. The laser is finely focused and guided by a computer which records the data used to form the selected indicia, such data being referenced for comparison to provide verification of authenticity upon presentation by a bearer. In one embodiment, the data used to create the indicia is generated by a computer program which may include a random number generator.

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