| 摘要 |
The invention relates to a lithograph for producing digital holograms in a storage medium ( 4 ), having a light source ( 6, 10 ) for producing a write beam ( 12 ) with a predefined beam cross section, having a writing lens ( 14 ) for focusing the write beam ( 12 ) onto the storage medium ( 4 ) to be written, the writing lens ( 14 ) being arranged in a lens holder ( 16 ), and having drive means for the two-dimensional movement of the write beam relative to the storage medium. The technical problem of writing computer-generated holograms as quickly as possible and with little effort by means of optical lithography is solved in that a first drive device ( 18 ) is provided for moving the lens holder ( 16 ) substantially at right angles to the write beam ( 12 ) and in that the aperture of the writing lens ( 14 ) is smaller than the beam cross section of the write beam ( 12 ). The inventon also relates to a method for the lithographic production of a hologram in a storage medium.
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