Optical transparent member and optical system using the same
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United States of America Patent
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Aug 6, 2013
Grant Date -
Aug 4, 2011
app pub date -
Apr 13, 2011
filing date -
Feb 18, 2005
priority date (Note) -
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Abstract
It is an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same, specifically an optical transparent member including on a base a layer containing SiO2 as a main component, a layer containing Al2O3 as a main component, and a plate crystal layer formed from plate crystals containing Al2O3 as a main component, wherein the surface of the plate crystal layer has a shape of irregularities, and an optical system using the same.
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