Method and apparatus for printing monochromatic imaging using a spatial light modulator
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Aug 1, 2000
filing date -
Aug 1, 2000
priority date (Note) -
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Abstract
A method and apparatus for monochromatic printing which records an image from digital image data onto a photosensitive medium (160) is disclosed. The apparatus includes the following: A light source (29) provides the monochromatic illumination. A uniformizer uniformizes a wavefront of light emitted from the light source (29). A polarizer (134) for filtering the uniformized light provides a polarized beam having a predetermined polarization state. A spatial light modulator (52) has a plurality of individual elements capable of altering the polarization state of the polarized beam to provide an exposure beam for printing. A state of each of the elements is controlled according to the digital image data. An optics assembly (11) is used for directing the polarized beam to the modulator and the exposure beam from the spatial light modulator (52). A lens assembly (132) is used for directing the exposure beam onto the photosensitive medium (160).
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