Patent ID: 7384709

Claim:
A method of producing digital holograms in a storage medium, wherein a write beam is focused onto the storage medium and moved two-dimensionally relative to the storage medium, a scanning beam is focused onto a trigger matrix having a plurality of pixels and moved two-dimensionally relative to the trigger matrix, the movement of the scanning beam being coupled with the movement of the write beam, when the scanning beam strikes a pixel belonging to the trigger matrix, a position trigger signal is generated, with the aid of the position trigger signal and an intensity value assigned to the pixel of the trigger matrix, the write beam is activated and, at the position associated with the pixel belonging to the trigger matrix, a point of the digital hologram is produced on the storage medium, and the hologram is written by introducing radiation energy point by point, the intensity of the write beam being controlled as a function of the position of the write beam on the storage medium, wherein the scanning beam is coupled out so it is never incident upon the storage medium.