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Thermally switched optical filter incorporating a guest-host architecture

  • US 8,284,336 B2
  • Filed: 04/12/2010
  • Issued: 10/09/2012
  • Est. Priority Date: 04/10/2009
  • Status: Expired due to Fees
First Claim
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1. A thermochromic filter device comprisingan order-providing, thermotropic carrier material defining a director orientation;

  • andan orientation-dependent colorant material included within the thermotropic carrier material responsive in order to the director orientation;

    whereinthe director orientation of the thermotropic carrier material is responsive to temperature-induced changes in the thermotropic carrier material;

    the orientation-dependent colorant material changes orientation with the director orientation, whereby light transmission properties of the device vary with temperature as a result.

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