Patent ID: 8405893

Claim:
A device for producing at least one reflection-hologram of high resolution within a photosensitive layer to be implemented in security-related applications, said device comprising: a structured, holographic master, wherein the holographic master comprises structures including a plurality of peaks and valleys formed on a surface of the holographic master; a filling-layer positioned in contact with the surface of the holographic master, wherein the filling-layer is at least partially transparent, wherein a first side of the filling-layer fills the valleys formed in the surface of the holographic master and a second side of the filling-layer, opposite the first side, is substantially flat, and wherein the photosensitive layer is to be positioned in contact with the second side of the filling-layer; a laser-light-source, which emits a group of rays onto the structured, holographic master; and an ultraviolet (UV) light-source, which emits UV light to selectively destroy reactivity of the photosensitive layer so that no further reflection-hologram is able to be produced in areas of the photosensitive layer in which reactivity has been destroyed to thereby produce customized patterns on the photosensitive layer, wherein a resolution of the structure of said master is large in relation to the wavelength of light emitted by the laser-light-source, the structure of said master is reflectingly mirrored, a maximum resolution of said reflection-hologram (RH) depends on the distance (d) between a photosensitive layer and the surface of the master, as well as the width (R) of the group of rays of the laser-light-source and on an angle α defined by the group of rays reflected at said structure as well as the group of rays emitted onto said master, wherein the resolution of the structure with more than 30 micrometers is large in relation to the wavelength of the laser-light used for exposure and wherein the structure is completely achromatic in relation to the laser-light.