OPTICAL DEVICES COMPRISING MICROLENSES AND LASER-FABRICATED PATTERNS OR OTHER STRUCTURES, THEIR MANUFACTURE AND USE

Disclosed are optical devices suitable as security devices for document authentication, which comprise at least one array of patterns such as laser-fabricated patterns, or other structures, optionally formed for example from elongate laser-modified tracks extending within a document substrate. The p...

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Bibliographic Details
Main Authors HO, Stephen Paulchi, ALIMOHAMMADIAN, Ehsan, OMRANE, Badr, MACPHERSON, Charles Douglas, MALMBERG, Sean Magnus, HERMAN, Peter
Format Patent
LanguageEnglish
Published 13.07.2023
Subjects
BOOK COVERS
BOOKBINDING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
LOOSE LEAVES
MOVABLE-STRIP WRITING OR READING APPARATUS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
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:Disclosed are optical devices suitable as security devices for document authentication, which comprise at least one array of patterns such as laser-fabricated patterns, or other structures, optionally formed for example from elongate laser-modified tracks extending within a document substrate. The patterns are combined with at least one array of microlenses to cause certain optical effects. Also disclosed are the use of such devices for document authentication, and methods for their production.
Bibliography:Application Number: AU20210398602