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Optical data processing system with reflective liquid crystal light valve

  • US 4,018,509 A
  • Filed: 03/08/1976
  • Issued: 04/19/1977
  • Est. Priority Date: 03/08/1976
  • Status: Expired due to Term
First Claim
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1. A coherent optical data processor comprising:

  • a. reflective mode alternating current driven liquid crystal light valve means of the hybrid field effect mode type for modulating the polarization state of coherent projection light responsively to a noncoherent input light signal;

    b. means for providing a noncoherent input light image signal to the input side of said light valve;

    c. means for providing coherent projection light to the output side of said light valve said means comprising a source of polarized light, said light valve means including analyzer means positioned to block the exit from said light valve of light in a first polarization state and to transmit light from said light valve when its polarization state has been modulated to at least one state different from said first state in said light valve;

    d. lens means positioned to receive said modulated polarization state light projected from said analyzer of said light valve for effecting a transform of the modulation image in said beam produced by said input signal; and

    e. means for detecting said transformed image.

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