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SWITCHABLE VOLUME HOLOGRAM MATERIALS AND DEVICES

  • US 20030197157A1
  • Filed: 07/02/1999
  • Published: 10/23/2003
  • Est. Priority Date: 07/12/1996
  • Status: Active Grant
First Claim
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1. A reflection grating made by exposing an interference pattern inside a polymer-dispersed liquid crystal material, the polymer dispersed liquid crystal material comprising, before exposure:

  • (a) a monomer;

    (b) a liquid crystal;

    (c) a chain-extending monomer;

    (d) a coinitiator; and

    (e) a photoinitiator dye.

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