Security element for a security document and process for the production thereof

A process for the production of a security element, the process comprising the following steps:

• a) providing a transparent first replication layer;
• b) forming a diffraction master relief structure on a first surface of the first replication layer;
• c) forming a region-wise first reflection layer and at least one region-wise first opaque auxiliary layer, on the first surface;
• d) forming a structure layer which is transparent in at least region-wise fashion by a second replication layer which is arranged on the first reflection layer and the at least one first opaque auxiliary layer and regions which are free therefrom of the first surface;
• e) forming a diffractive second relief structure on a second side of the structure layer;
• and
• f) forming a region-wise second reflection layer on the second side of the structure layer in a layer thickness, with which the second relief structure is shaped on the side, remote from the structure layer, of the second reflection layer.

A process for the production of a security element, the process comprising the following steps:

• g) providing a transparent structure layer;
• h) forming a diffractive first relief structure on a first side and a diffractive second relief structure on a second side of the structure layer;
• i) forming an at least region-wise first reflection layer and at least one first opaque auxiliary layer on the first side of the structure layer;
• and
• k) forming an at least region-wise second reflection layer and at least one second opaque auxiliary layer on the second side of the structure layer.