OPTICAL VARIABLE ELEMENT BASED ON DIFFRACTIVE MOIRE PATTERNS

A personalized medium includes a core layer having at least a clear window or transparent portion, at least a first diffraction grating on an upper surface or a lower surface of the core layer, and a second diffraction grating on an opposing side of the core layer from the first diffraction grating,...

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Bibliographische Detailangaben
Hauptverfasser:	NEUENSCHWANDER, Thomas, DAVOINE, Laurent
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A personalized medium includes a core layer having at least a clear window or transparent portion, at least a first diffraction grating on an upper surface or a lower surface of the core layer, and a second diffraction grating on an opposing side of the core layer from the first diffraction grating, wherein the first and second diffraction gratings create a Moire pattern. Un support personnalisé comprend une couche centrale ayant au moins une fenêtre transparente ou une partie transparente, au moins un premier réseau de diffraction sur une surface supérieure ou une surface inférieure de la couche centrale, et un second réseau de diffraction sur un côté opposé de la couche centrale par rapport au premier réseau de diffraction, les premier et second réseaux de diffraction créant un moirage.