Decorative element, security document with a decorative element and process for producing a decorative element

There will be described thereof with a decorative element and a method for producing a decorative element (2), in particular in the form of a transfer film, a laminating film or a security thread, as well as one security document. The decorative element (2) has a microstructure (4), which generates in the reflected and / or transmitted light an optical effect. The microstructure (4) has in a first region (32) a base (40) and a plurality of basic elements (41), each having a relation to the base surface (40) raised or recessed element surface and a between the element surface and the base surface (40) have arranged edge. The base (40) of the microstructure defines a by coordinate axes x and y spanned ground plane. The element surfaces of the base elements (41) are parallel to the ground plane are each substantially. In at least one or more first regions of the first region (32) of the element faces of the base elements (41) and the base (40) in a direction perpendicular to the base plane (40) in the direction of a coordinate axis z extending direction spaced at a first distance is selected so that one or more first zones is generated in particular by interference of the reflected on the base surface and the element faces the light in the incident light and / or in particular by interference of light transmitted through the element surfaces and the bases of the light in the transmitted light color in the.