Security Device with a zero-order diffractive microstructure

A security Device comprises a zero order diffractive microstructure (5) buried within a substrate (3). One or more further optical structures, such as microlenses (1), may be formed on a surface (2) of the substrate (3). The further optical structures modify the optical characteristics of the zero o...

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Bibliographic Details
Main Authors SCHNIEPER MARC, STUCK ALEXANDER, WALTER HARALD
Format Patent
LanguageEnglish
Published 14.05.2013
Subjects
BOOK COVERS
BOOKBINDING
CALCULATING
COMPUTING
COUNTING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
HANDLING RECORD CARRIERS
LOOSE LEAVES
MOVABLE-STRIP WRITING OR READING APPARATUS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
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:A security Device comprises a zero order diffractive microstructure (5) buried within a substrate (3). One or more further optical structures, such as microlenses (1), may be formed on a surface (2) of the substrate (3). The further optical structures modify the optical characteristics of the zero order diffractive microstructure (5). Various alternatives or additional optical structures and methods of producing them are described in additional embodiments.
Bibliography:Application Number: US201213591174