HOLOGRAPHIC DEVICE WHICH DETECTS ENCODING ELEMENTS

FIELD: devices for protection of securities against counterfeit. SUBSTANCE: method involves detection of Fourier holograms by means of moving of point reference wave source from front focal plane of optical system of Fourier transform of object image into infinity. Spherical optical system of Fourie...

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Bibliographische Detailangaben
Hauptverfasser:	KOPIJ N.V, SOKOL'SKIJ M.N, GAL'PERN A.D, PARAMONOV A.A, TREGUB V.P, LEVANDOVSKAJA L.E, SKVORTSOV JU.S, UTENKOV B.I
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BOOK COVERS BOOKBINDING CINEMATOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTROGRAPHY FILES HOLOGRAPHIC PROCESSES OR APPARATUS HOLOGRAPHY LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING
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