Security element with diffractive structure

摘要

The element e.g. transfer film (1), has a replication paint layer (12) providing a diffractive structure (13). Light incident under a predetermined incident angle is diffracted to a surface normal (F) by the structure such that an image i.e. real color image, is appeared as a diffraction pattern of a diffraction order for a viewer viewing in a predetermined viewing angle to the surface normal. The surface normal is a normal to a ground plane that is defined by the layer. The structure is designed such that a viewing angle is greater than 50 degrees preferably greater than 70 degrees. Independent claims are also included for the following: (1) a security document (2) a method for manufacturing a security element.