Mirror coating

  • US 5,619,375 A
  • Filed: 10/17/1995
  • 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 exhibits 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 ferric oxide having a thickness of about 95 nanometers;

    a second layer of silicon dioxide having a thickness of about 35.50 nanometers;

    a third layer of ferric oxide having a thickness dimension of about 51.50 nanometers;

    a fourth layer of silicon dioxide having a thickness dimension of about 103.00 nanometers; and

    a fifth layer of ferric oxide having a thickness dimension of about 22.50 nanometers.

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