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Method and apparatus for printing to a photosensitive media using multiple spatial light modulators

  • US 6,407,766 B1
  • Filed: 07/18/2000
  • Issued: 06/18/2002
  • Est. Priority Date: 07/18/2000
  • Status: Expired due to Fees
First Claim
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1. A method of printing two-dimensional swaths of area onto a photosensitive media comprising the steps of:

  • imaging light from a light source through an optics assembly;

    passing said light from said optics assembly through a polarization beamsplitter element to produce a first polarization state of said light and a second polarization state of said light;

    directing said first polarized light to a first color filter;

    passing said first polarized light from said first color filter to a first spatial light modulator to create an essentially telecentric illumination at said first spatial light modulator;

    addressing said first spatial light modulator with a first color signal to create a first modulated light beam;

    imaging said first modulated light beam through a print lens assembly on said photosensitive media;

    directing said second polarized light to a second color filter;

    passing said second polarized light from said second color filter to a second spatial light modulator to create an essentially telecentric illumination at said second spatial light modulator;

    addressing said second spatial light modulator with a second color signal to create a second modulated light beam;

    imaging said second modulated light beam through the print lens assembly on said photosensitive media;

    addressing said second spatial light modulator with a third color signal to create a third modulated light beam;

    imaging said third modulated light beam through the print lens assembly on said photosensitive media; and

    wherein said second signal and said third color signal are processed simultaneously with said first color signal.

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