Patent ID: 8432589
Filing Date: 2013-04-30
Classification: B42D,B44F,G03H

Abstract:
1. A multi-layer body having a carrier substrate and a transparent layer at least partially arranged in a window or in a transparent region of the carrier substrate, wherein the transparent layer has at least a first subregion and a second subregion with a varying refractive index, which are arranged in mutually juxtaposed relationship in the layer plane defined by the transparent layer, wherein the at least first subregion and the at least second subregion are at least partially arranged in the window or in the transparent region of the carrier substrate, each of the subregions has a plurality of periodically arranged nodes which form an optical-action element and which are formed by a refractive index variation and which are arranged in substantially mutually parallel planes, and the planes in the at least first subregion are not parallel to the planes in the at least second subregion, and at least in one of the subregions the planes extend neither parallel nor perpendicular to the layer plane so that both the light incident on a front side and on a rear side of the multi-layer body is diffracted by the optical-action elements and the elements produce an optical effect which is different in the front view and in the rear view in the incident light mode.