Encoded hologram for producing a machine readable image and a human readable image

An encoded hologram that produces a first image and a second image pursuant to playback illumination, wherein the first image is resolvable by human vision while the second image is not resolvable by human vision when the playback illumination comprises non-coherent broad band illumination, and wher...

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Bibliographic Details
Main Authors WREEDE; JOHN E, VIRGADAMO; MICHAEL J, UPPER; RICHARD B, MULDER; JERRY L, YIN; LILLIAN, GUNTHER; JOHN E, SCOTT; JAMES E, YU; KEVIN
Format Patent
LanguageEnglish
Published 12.03.1996
Edition6
Subjects
BOOK COVERS
BOOKBINDING
CALCULATING
CINEMATOGRAPHY
COMPUTING
COUNTING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
ELECTROGRAPHY
FILES
HANDLING RECORD CARRIERS
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
LOOSE LEAVES
MOVABLE-STRIP WRITING OR READING APPARATUS
PERFORMING OPERATIONS
PHOTOGRAPHY
PHYSICS
PRESENTATION OF DATA
PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES
PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR
RECOGNITION OF DATA
RECORD CARRIERS
SPECIAL PRINTED MATTER
TRANSPORTING
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Summary:An encoded hologram that produces a first image and a second image pursuant to playback illumination, wherein the first image is resolvable by human vision while the second image is not resolvable by human vision when the playback illumination comprises non-coherent broad band illumination, and wherein the second image is machine readable when the hologram is illuminated with playback illumination that is based on the original reference beam.
Bibliography:Application Number: US19930114538