Being the manner which generates digital hologram in the mannered null storage which generates digital hologram in the lithograph

摘要

The present invention relates to a method for producing digital holograms in a storage medium. The purpose of the invention is that without complicated as fast as possible through photolithography, a simultaneous control of the positioning and triggering time, to solve the technical problems of writing computer generated hologram writing beams. This object is achieved by displacing across the trigger line by focusing on the trigger mask, which is focused on the storage medium write beam and is displaced in one dimension relative to the storage medium, and has a trigger line multiple scanning beams is achieved. Movement of the scanning beam is related to the movement of the writing beam, the trigger signal in time is generated according to the arrangement of the trigger line during scanning of the trigger lines, the intensity of the write beam is controlled by a trigger signal in time is, hologram is written on a line-by-line basis in the irradiation of point-like radiation of energy. Storage medium is displaced by a predetermined amount across the scanning direction for the writing of the adjacent lines. Technical problems are also solved by a lithographic for the generation of digital hologram.