Patent ID: 7413830
Filing Date: 2008-08-19
Classification: G03F,G03H

Abstract:
1. A method of producing digital holograms in a storage medium, wherein a write beam is focused onto the storage medium and moved one-dimensionally relative to the storage medium, a scanning beam is focused onto a trigger mask having a plurality of trigger lines and moved one-dimensionally transversely relative to the trigger lines, the movement of the scanning beam being coupled with the movement of the write beam and wherein the scanning beam is coupled out so it is not incident upon the storage medium, during the scanning of the trigger lines, a timed trigger signal is generated as a function of the arrangement of the trigger lines, with the aid of the timed trigger signal, the intensity of the write beam on the storage medium is controlled, and the hologram is written line by line by introducing radiation energy point by point, the storage medium being displaced transversely with respect to the scanning direction of the lines by a predefined distance to write adjacent lines of the hologram.