Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Reexamination Certificate
2002-03-28
2008-08-19
Angebranndt, Martin J (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
C430S002000, C359S035000, C359S009000
Reexamination Certificate
active
07413830
ABSTRACT:
The present invention relates to a method of producing digital holograms in a storage medium, in which the technical problem of writing computer-generated holograms by means of optical lithography as quickly as possible and with little effort with simultaneous accurate control of the timed triggering and the positioning of the write beam is achieved in that a write beam is focused onto the storage medium and moved one-dimensionally relative to the storage medium, in that 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, in that, during the scanning of the trigger lines, a timed trigger signal is generated as a function of the arrangement of the trigger lines, in that, with the aid of the timed trigger signal, the intensity of the write beam on the storage medium is controlled, and in that 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.The technical problem is also solved by a lithograph for producing digital holograms.
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Dietrich Christoph
Gerspach Matthias
Leiber Jörn
Noehte Steffen
Stadler Stefan
Angebranndt Martin J
Proskauer Rose LLP
Tesa Scribos GmbH
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