Method for making optically effective surface relief microstructures

Method for making a mask which has a microstructure of first and second zones of different transparency, which comprises the steps depositing on a layer (42) of a mask material a film (43) with a topologically structured corrugated surface structure, reducing the thickness of the film (43) until the...

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Bibliographic Details
Main Author STALDER, MARTIN
Format Patent
LanguageEnglish
French
German
Published 06.03.2013
Subjects
APPARATUS SPECIALLY ADAPTED THEREFOR
BOOK COVERS
BOOKBINDING
CHECKING-DEVICES
CINEMATOGRAPHY
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
ELECTROGRAPHY
FILES
HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING
HOLOGRAPHY
LOOSE LEAVES
MATERIALS THEREFOR
MOVABLE-STRIP WRITING OR READING APPARATUS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORIGINALS THEREFOR
PERFORMING OPERATIONS
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
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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Summary:Method for making a mask which has a microstructure of first and second zones of different transparency, which comprises the steps depositing on a layer (42) of a mask material a film (43) with a topologically structured corrugated surface structure, reducing the thickness of the film (43) until the material of the film in lower zones of the corrugated surface is cleared away and parts (44) of the underlying mask material are set free, and removing the parts (44) of the mask that are set free.
Bibliography:Application Number: EP20120191370