OPTICAL PRODUCT AND OPTICAL PRODUCT MANUFACTURING METHOD
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United States of America Patent
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Issued Date -
Nov 30, 2023
app pub date -
Aug 2, 2023
filing date -
Feb 8, 2021
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Abstract
An optical product includes a base, and an optical film formed on a film-formation surface thereof. The optical film has an Al2O3 layer made of Al2O3 and disposed on the base side, and an SiO2 layer made of SiO2 and having a minutely uneven structure. The method for manufacturing the optical product includes forming, on the base, an Al-based manufacture intermediate film made of aluminium, an aluminium alloy, or an aluminium compound, and immersing the base having the Al-based manufacture intermediate film in an aqueous solution of silica. The silica in the aqueous solution has a concentration of not greater than 10 mg/l.
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