Security element and security document with one such security element

摘要

A security element 2, 4 for embedding in or application to a security document in such a way that it is visually recognizable from both sides of the security document 1 , is structured in a multilayer fashion and includes two interference elements I₁, I₂ with color shift effect, a metallic reflection layer R located in between as well as, optionally, diffraction structures 8 . Depending on the disposition of the layers I₁, R, I₂ and the optionally present diffraction structures. 8 on a transparent substrate S the color shift effect and/or the diffractive effects are perceptible-from-one or from both sides of the security element 2, 4 . The security element is particularly suitable as a two-sided window thread 4 and as a label or transfer element 2 above a hole 3 in the security document 1.