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US 12,006,439 B2Granted
Optical member, optical device and coating liquid
AssigneeCanon Kabushiki Kaisha
InventorsShuhei Yamamoto, Tomonari Nakayama
Life of this patent
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Abstract
An optical member having a porous layer having both low scattering and film strength is provided. The optical member is an optical member, having a porous layer in which a plurality of silicon oxide particles are bound with an inorganic binder on a base material, and the porous layer contains a fluorine-containing organic acid having 5 or more and 11 or less fluorine atoms in one molecule.
Claims8
A member, comprising a porous layer in which silicon oxide particles having a fluorine-containing organic acid on a surface thereof are bound with an inorganic binder on a base material,
- wherein the fluorine-containing organic acid is at least one selected from the group consisting of heptafluorobutyric acid, nonafluorovaleric acid, and undecafluorohexanoic acid.
Dependencies are inferred from the claim text.