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US 6,605,361 B2Granted
Coating composition for lenses and method for producing the same
AssigneeHoya Corporation
InventorsJun Watanabe, Takanobu Itoh
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Abstract
A coating composition that can be applied to a lens, a method of making the coating composition, and a coated lens comprising a cured coating composition of the invention are disclosed. The coating composition is produced by providing a mixture comprising metal oxide colloid particles and an organosilicon compound, and adding an acetylacetonate metal salt and an aliphatic amine to the mixture.
Claims5
A coated lens comprising:
- a formed and previously cured lens;
- and
- a cured coating disposed on a surface of the lens, wherein the cured coating results from curing a coating composition applied to the formed and previously cured lens, the coating composition being produced by the process comprising:
- providing a mixture consisting essentially of metal oxide colloid particles and an organosilicon compound;
- hydrolyzing the mixture;
- and
- after hydrolyzing the mixture, adding an acetylacetonate metal salt and an aliphatic amine to the hydrolyzed mixture.
4 more elements
A method for producing a coated lens, comprising:
- producing a coating composition by providing a mixture consisting essentially of metal oxide colloid particles and an organosilicon compound, hydrolyzing the mixture and adding an acetylacetonate metal salt and an aliphatic amine to the hydrolyzed mixture,
- applying the coating composition to a surface of a formed lens, and
- curing the coating composition.
Dependencies are inferred from the claim text.