OPTICAL SWITCH DEVICES

A security device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different fro...

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Bibliographische Detailangaben
Hauptverfasser:	Tamkin, John Michael, Phillips, Roger Winston, Petersen, Joel Mikael, Rich, Christopher Chapman
Format:	Patent
Sprache:	eng
Schlagworte:	BOOK COVERS BOOKBINDING DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 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 DESIGNS OR PICTURES SPECIAL PRINTED MATTER TRANSPORTING
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