Patent ID: 9297941
Filing Date: 2016-03-29
CPC Classification: B42D,G02B

Claim Text:
1. An optically variable element having a transparent carrier layer; an at least partly transparent reflective layer which is formed on the carrier layer; and a transparent embedding layer which is formed on the reflective layer; wherein the reflective layer is structured in a motif region such that said layer forms a multiplicity of partly transparent micromirrors which present a perceptible motif upon plan viewing of the motif region due to specular reflection of incident light; and wherein the refractive indices of the carrier layer and of the embedding layer differ in the visible spectrum by no more than 0.2 in order that the motif perceptible in plan view is not recognizable upon transmission viewing of the motif region wherein the reflective layer is a dielectric layer whose refractive index differs in at least a part of the visible spectrum by more than 0.2 from the refractive index of the carrier layer and from the refractive index of the embedding layer, respectively.