OPTICAL COMPONENT
PROBLEM TO BE SOLVED: To provide an optical component which contains two or more hidden images for authentication and antiforgery purposes and in which the images are successively revealed and concealed when the optical component is held between two polarizers. SOLUTION: The optical component contai...
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| creator | MOIA FRANCO |
| description | PROBLEM TO BE SOLVED: To provide an optical component which contains two or more hidden images for authentication and antiforgery purposes and in which the images are successively revealed and concealed when the optical component is held between two polarizers. SOLUTION: The optical component contains one or more optical retarders in which the images are embedded in separate adjacent stripes or areas and each image is associated with a different mode of interaction with polarized light. Instead of two polarizers, one will suffice if the component is mounted on a reflector. COPYRIGHT: (C)2011,JPO&INPIT |
| format | Patent |
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SOLUTION: The optical component contains one or more optical retarders in which the images are embedded in separate adjacent stripes or areas and each image is associated with a different mode of interaction with polarized light. Instead of two polarizers, one will suffice if the component is mounted on a reflector. COPYRIGHT: (C)2011,JPO&INPIT</description><language>eng</language><subject>ADVERTISING ; BOOK COVERS ; BOOKBINDING ; CRYPTOGRAPHY ; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ; DISPLAY ; DISPLAYING ; EDUCATION ; FILES ; IMPREGNATING OR COATING OF PAPER ; LABELS OR NAME-PLATES ; LOOSE LEAVES ; MOVABLE-STRIP WRITING OR READING APPARATUS ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PAPER NOT OTHERWISE PROVIDED FOR ; PAPER-MAKING ; PERFORMING OPERATIONS ; PHYSICS ; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D ; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES ; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR ; PRODUCTION OF CELLULOSE ; PULP COMPOSITIONS ; SEALS ; SIGNS ; SPECIAL PRINTED MATTER ; TEXTILES ; TRANSPORTING ; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G</subject><creationdate>2011</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=20110421&DB=EPODOC&CC=JP&NR=2011081419A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110421&DB=EPODOC&CC=JP&NR=2011081419A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MOIA FRANCO</creatorcontrib><title>OPTICAL COMPONENT</title><description>PROBLEM TO BE SOLVED: To provide an optical component which contains two or more hidden images for authentication and antiforgery purposes and in which the images are successively revealed and concealed when the optical component is held between two polarizers. SOLUTION: The optical component contains one or more optical retarders in which the images are embedded in separate adjacent stripes or areas and each image is associated with a different mode of interaction with polarized light. Instead of two polarizers, one will suffice if the component is mounted on a reflector. 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SOLUTION: The optical component contains one or more optical retarders in which the images are embedded in separate adjacent stripes or areas and each image is associated with a different mode of interaction with polarized light. Instead of two polarizers, one will suffice if the component is mounted on a reflector. COPYRIGHT: (C)2011,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ADVERTISING BOOK COVERS BOOKBINDING CRYPTOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING EDUCATION FILES IMPREGNATING OR COATING OF PAPER LABELS OR NAME-PLATES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PHYSICS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRODUCTION OF CELLULOSE PULP COMPOSITIONS SEALS SIGNS SPECIAL PRINTED MATTER TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G |
| title | OPTICAL COMPONENT |
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