Visible-spectrum anti-reflection coating including electrically-conductive metal oxide layers
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United States of America Patent
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Nov 8, 1994
Grant Date -
N/A
app pub date -
Sep 23, 1993
filing date -
Sep 23, 1993
priority date (Note) -
Expired
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Abstract
A six-layer anti-reflection coating (20 and 20A) includes three layers (24, 28, and 34) which may be formed from an electrically-conductive metal oxide having a refractive index between about 1.9 and 2.1 at a wavelength of 520 nanometers. Up to a total optical thickness of about one-wavelength of visible light of the electrically-conductive metal oxide may be included in the coating, while still providing less than 0.25 percent photopic reflection.
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