Optically variable one-way mirror

  • US 3,280,701 A
  • Filed: 06/07/1965
  • Issued: 10/25/1966
  • Est. Priority Date: 09/05/1961
  • Status: Expired due to Term
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First Claim
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1. AN OPTICALLY VARIABLE MIRROR, COMPRISING:

  • A SUPPORTED ONE-WAY MIRROR SURFACE COMPRISING A PARTIALLY REFLECTIVE COATING ON A TRANSPARENT SURFACE;

    SAID SURFACE BEING GENERALLY TRANSPARENT WHEN THE LIGHT INTENSITY INCIDENT TO ONE SIDE THEREOF IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO THE OPPOSITE SIDE, AND SAID SURFACE COMPRISING A REFLECTIVE MIRROR SURFACE WHEN THE LIGHT INTENSITY INCIDENT TO SAID OPPOSITE SIDE IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO SAID ONE SIDE;

    A FIRST SUBSTANCE ADJACENT SAID ONE SIDE;

    FIRST MEANS TO APPLY A PREDETERMINED ENERGY POTENTIAL TO SAID FIRST SUBSTANCE;

    SAID FIRST SUBSTANCE HAVING AN OPACITY VARIABLE WITH SAID ENERGY POTENTIAL APPLIED THERETO SUCH THAT THE CHARACTERISTICES OF SAID SURFACE MAY BE ALTERED BETWEEN TRANSPARENCY AND REFLECTIVITY;

    AND A SECOND SUBSTANCE ADJACENT SAID OPPOSITE SIDE;

    SECOND MEANS TO APPLY A PREDETERMINED TYPE OF ENERGY POTENTIAL TO SAID SECOND SUBSTANCE;

    SAID SECOND SUBSTANCE BEING CAPABLE OF COLOR VARIATIONS WITH THE LATTER MENTIONED TYPE OF APPLIED ENERGY SUCH THAT THE REFLECTIVITY BRIGHTNESS FROM SAID SURFACE MAY BE VARIED.

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