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Optical system for producing a modulated color image

  • US 6,704,065 B1
  • Filed: 05/12/2000
  • Issued: 03/09/2004
  • Est. Priority Date: 04/07/1995
  • Status: Expired due to Fees
First Claim
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1. An optical system, comprising:

  • an input retarder stack that transforms a first spectrum of input light from a light source into a first polarization state, and transforms a second spectrum of the input light into a second polarization state different than the first polarization state;

    a beam splitting unit, optically coupled to the input retarder stack, comprising a first beamsplitter that transmits the first polarization state and reflects the second polarization state;

    a first spatial light modulator optically coupled to the beam splitting unit, that modulates and reflects the first spectrum, as a modulated first spectrum, towards the beam splitting unit; and

    a second spatial light modulator optically coupled to the beam splitting unit, that modulates and reflects the second spectrum, as a modulated second spectrum, towards the beam splitting unit, wherein the beam splitting unit combines the modulated first spectrum and the modulated second spectrum into a combined spectrum.

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