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Tristate electrochromic device

  • US 7,835,059 B2
  • Filed: 04/01/2005
  • Issued: 11/16/2010
  • Est. Priority Date: 05/21/2004
  • Status: Active Grant
First Claim
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1. An electrochromic medium, comprising:

  • at least one solvent;

    at least one anodic material;

    at least one cathodic material;

    wherein, in a first state, the electrochromic medium exhibits a transmission in the visible radiation spectral region and the near-infrared radiation spectral region;

    wherein, in a second state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in one of the visible radiation spectral region or the near-infrared radiation spectral region without material attenuation in the other spectral region, andwherein, in a third state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in the other spectral region where the material attenuation did not occur in the second state.

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