Mirror coating

  • US 5,619,374 A
  • Filed: 10/13/1995
  • Issued: 04/08/1997
  • Est. Priority Date: 12/07/1993
  • Status: Expired due to Fees
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First Claim
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1. A mirror coating comprising a non-periodic succession of materials in a layered interference filter structure, and wherein the mirror coating exibits substantially neutral reflected chromaticity as observed with reflected ambient light, has a peak transmittance of not less than 60%. within a predetermined spectral band pass region, has a peak absorbance of not less than 30% within a spectral region other than the predetermined spectral band pass region, and which simultaneously has a luminous reflectance of greater than 50% for the ambient light striking the mirror coating, and wherein the mirror coating comprises:

  • a first layer of copper having a thickness of about 3.68 nanometers;

    a second layer of silicon dioxide having a thickness of about 87.68 nanometers;

    a third layer of titanium oxide having a thickness dimension of about 63.70 nanometers;

    a fourth layer of silicon dioxide having a thickness dimension of about 77.68 nanometers;

    a fifth layer of titanium oxide having a thickness dimension of about 42.28 nanometers;

    a sixth layer of silicon dioxide having a thickness dimension of about 81.21 nanometers; and

    a seventh layer of titanium oxide having a thickness dimension of about 61.63 nanometers.

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