Thin optical security element and method of designing it
The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the projected image comprising a caustic patter...
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| creator | PAULY, Mark DEGOTT, Pierre DINOEV, Todor SCHWARTZBURG, Yuliy CALLEGARI, Andrea MAYER, Alain GARNIER, Christophe TESTUZ, Romain |
| description | The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the projected image comprising a caustic pattern reproducing a reference pattern that is easily visually recognizable by a person. The invention also relates to a method for designing a relief pattern of a light-redirecting surface of a thin optical security element. |
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The invention also relates to a method for designing a relief pattern of a light-redirecting surface of a thin optical security element.</description><language>eng</language><subject>BOOK COVERS ; BOOKBINDING ; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ; FILES ; LOOSE LEAVES ; MOVABLE-STRIP WRITING OR READING APPARATUS ; PERFORMING OPERATIONS ; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES ; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR ; SPECIAL PRINTED MATTER ; TRANSPORTING</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220609&DB=EPODOC&CC=AU&NR=2018338768B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220609&DB=EPODOC&CC=AU&NR=2018338768B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PAULY, Mark</creatorcontrib><creatorcontrib>DEGOTT, Pierre</creatorcontrib><creatorcontrib>DINOEV, Todor</creatorcontrib><creatorcontrib>SCHWARTZBURG, Yuliy</creatorcontrib><creatorcontrib>CALLEGARI, Andrea</creatorcontrib><creatorcontrib>MAYER, Alain</creatorcontrib><creatorcontrib>GARNIER, Christophe</creatorcontrib><creatorcontrib>TESTUZ, Romain</creatorcontrib><title>Thin optical security element and method of designing it</title><description>The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the projected image comprising a caustic pattern reproducing a reference pattern that is easily visually recognizable by a person. 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The invention also relates to a method for designing a relief pattern of a light-redirecting surface of a thin optical security element.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BOOK COVERS BOOKBINDING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING |
| title | Thin optical security element and method of designing it |
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