OPTICAL ELEMENT

摘要

An element for protection against forgery and/or copying is arranged on a substrate and includes an optically anisotropic layer which has at least two regions with different optical axes, characterized in that the substrate is a reflective polarizer. The optically anisotropic layer can include cross-linked liquid crystal monomers. The anisotropic layer can be placed on an orientation layer. The orientation layer can be in contact with the polarizer and can include a photo-oriented polymer network. A device for protection against forgery and/or copying is characterized in that an element as set forth above and an analyzer are arranged on the same substrate.

主权项

1. Element for protection against forgery and/or copying, being arranged on a substrate and comprising an optically anisotropic layer which has at least two regions with different optical axes, characterized in that the substrate is a reflective polarizer.