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Switchable polymer-dispersed liquid crystal optical elements

  • US 7,265,882 B2
  • Filed: 11/08/2005
  • Issued: 09/04/2007
  • Est. Priority Date: 07/12/1996
  • Status: Expired due to Fees
First Claim
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1. A crossbar switch comprising:

  • multiple polymer-dispersed liquid crystal holographic elements, wherein each of the polymer-dispersed liquid crystal holographic elements deflects light in a first state and transmits light in a second state, and further wherein the multiple polymer-dispersed liquid crystal holographic elements may be arranged to form an N2×

    N2 matrix cross-connect switch, where N equals at least two, the cross-connect switch including multiple layers each comprised of N×

    N elements, the layers being arranged in sets, each set containing N layers, in a first set of N layers each element therein is capable of deflecting light in one of the up or down direction and in a second set of N layers each element therein is capable of deflecting light in one of the right or left direction.

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