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VARIABLE CONTRAST IMAGE PROJECTION

  • US 3,724,938 A
  • Filed: 11/28/1969
  • Issued: 04/03/1973
  • Est. Priority Date: 11/28/1969
  • Status: Expired due to Term
First Claim
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2. The system of claim 1 wherein said optic axis and said azimuth of transmittance of the electric vector of said analyzer are orientable at selectively variable angles with respect to the plane of polarization of said polarized light, and wherein said phase varying means is adjustable for at least partially extinguishing polarized light passing thereto from selected said matrix volume elements, depending on the birefringence of said selected matrix volume elements.

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