USE OF NANOPARTICLES TO TUNE INDEX OF REFRACTION OF LAYERS OF A POLYMERIC MATRIX TO OPTIMIZE MICROOPTIC (MO) FOCUS

A security device (100, 900) comprising:an arrangement of image icon focusing elements (120, 605, 705) wherein each image icon focusing element of the arrangement of image icon focusing elements is associated with a focal path;an image icon layer comprising one or more image icons (110a, 909) associ...

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Bibliographische Detailangaben
Hauptverfasser:	GOSNELL, Jonathan D, GETTENS, Nancy J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BOOK COVERS BOOKBINDING COLOUR PRINTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES IMPREGNATING OR COATING OF PAPER LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS 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 PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPECIAL PRINTED MATTER STAMPS TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TYPEWRITERS
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Beschreibung
Zusammenfassung:	A security device (100, 900) comprising:an arrangement of image icon focusing elements (120, 605, 705) wherein each image icon focusing element of the arrangement of image icon focusing elements is associated with a focal path;an image icon layer comprising one or more image icons (110a, 909) associated with a first characteristic color and one or more image icons (110b, 911) associated with a second characteristic color; andone or more regions between image icons comprising a volume of substantially colorless material,wherein, at a first viewing angle, a color is visible through each image icon focusing element, andwherein the color visible through each image icon focusing element at the first viewing angle is based on one or more of the first characteristic color, the second characteristic color, or the substantially colorless material.