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Achromatic Polarization Switches

  • US 20060291053A1
  • Filed: 06/14/2006
  • Published: 12/28/2006
  • Est. Priority Date: 01/23/2006
  • Status: Active Grant
First Claim
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1. An achromatic polarization switch that transforms linearly polarized light of an initial polarization orientation, comprising:

  • a first liquid crystal (LC) cell having a first axis of orientation relative to the initial polarization orientation; and

    a second LC cell having a second axis of orientation relative to the first axis of orientation;

    wherein the first and second LC cells are each operable to allow the linearly polarized light to pass without retardation in a first state, and are each operable to retard the linearly polarized light by substantially a half wavelength in a second state, and wherein the first and second LC cells simultaneously operate in the same state.

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