Lithograph comprising a moving cylindrical lens system
The invention relates a lithograph for producing computer-generated holograms in a storage medium ( 13 ), provided with a source for generating a write beam ( 2 ), a moving lens ( 4 ) for focussing the write beam ( 2 ), means for displacing the moving lens ( 4 ) along a direction of movement ( 6 ),...
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| Main Authors | , , , , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
23.12.2004
|
| Online Access | Get full text |
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| Abstract | The invention relates a lithograph for producing computer-generated holograms in a storage medium (
13
), provided with a source for generating a write beam (
2
), a moving lens (
4
) for focussing the write beam (
2
), means for displacing the moving lens (
4
) along a direction of movement (
6
), and with a means for displacing the write beam (
2
) in relation to the storage medium (
13
) in a manner that is perpendicular to the direction of movement (
6
). The aim of the invention is to provide a lithograph in which disruptions in the movement of a lens perpendicular to the direction of movement thereof do not effect this end, the moving lens (
4
) has refractive power only essentially in a first direction that is parallel to the direction of movement (
6
). In addition, a stationary lens (
9
) is provided, and this stationary lens (
9
) has refractive power only essentially in a second direction (
5
), whereby the second direction (
5
) is perpendicular to the first direction and to the write beam (
2
). |
|---|---|
| AbstractList | The invention relates a lithograph for producing computer-generated holograms in a storage medium (
13
), provided with a source for generating a write beam (
2
), a moving lens (
4
) for focussing the write beam (
2
), means for displacing the moving lens (
4
) along a direction of movement (
6
), and with a means for displacing the write beam (
2
) in relation to the storage medium (
13
) in a manner that is perpendicular to the direction of movement (
6
). The aim of the invention is to provide a lithograph in which disruptions in the movement of a lens perpendicular to the direction of movement thereof do not effect this end, the moving lens (
4
) has refractive power only essentially in a first direction that is parallel to the direction of movement (
6
). In addition, a stationary lens (
9
) is provided, and this stationary lens (
9
) has refractive power only essentially in a second direction (
5
), whereby the second direction (
5
) is perpendicular to the first direction and to the write beam (
2
). |
| Author | Dietrich, Christoph Stadler, Stefan Thomann, Robert Leiber, Joern Noehte, Steffen |
| Author_xml | – sequence: 1 givenname: Steffen surname: Noehte fullname: Noehte, Steffen – sequence: 1 givenname: Christoph surname: Dietrich fullname: Dietrich, Christoph – sequence: 2 givenname: Robert surname: Thomann fullname: Thomann, Robert – sequence: 3 givenname: Stefan surname: Stadler fullname: Stadler, Stefan – sequence: 4 givenname: Joern surname: Leiber fullname: Leiber, Joern |
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| Snippet | The invention relates a lithograph for producing computer-generated holograms in a storage medium (
13
), provided with a source for generating a write beam (... |
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| Title | Lithograph comprising a moving cylindrical lens system |
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