The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2008
Filed:
Mar. 28, 2002
Steffen Noehte, Weinheim, DE;
Christoph Dietrich, Heidelberg, DE;
Robert Thomann, Heidelberg, DE;
Matthias Gerspach, Heidelberg, DE;
Jörn Leiber, Hamburg, DE;
Stefan Stadler, Hamburg, DE;
Steffen Noehte, Weinheim, DE;
Christoph Dietrich, Heidelberg, DE;
Robert Thomann, Heidelberg, DE;
Matthias Gerspach, Heidelberg, DE;
Jörn Leiber, Hamburg, DE;
Stefan Stadler, Hamburg, DE;
Tesa Scribos GmbH, Heidelberg, DE;
Abstract
A lithograph for producing digital holograms in a storage medium includes a light source for producing a write beam, the light source having drive means for the two-dimensional movement of the write beam relative to the storage medium and having a first objective for focusing the write beam onto the storage medium. Writing computer-generated holograms by means of optical lithography is solved in that: a two-dimensional trigger matrix is provided, means of producing a scanning beam are provided, a second objective for focusing the scanning beam onto the trigger matrix is provided, the drive means moves the scanning beam two-dimensionally relative to the surface of the trigger matrix, the movement of the scanning beam being coupled with the movement of the write beam, and means for generating a trigger signal to control the intensity of the write beam are connected to the trigger matrix.