Method for Producing Optical Article
A method for producing an optical article includes: forming a first layer that is light-transmissive on an optical substrate directly or with another layer in between; and reducing the resistance of at least a portion of a surface layer of the first layer by ion-assisted deposition of at least one composition selected from the group consisting of titanium, niobium, oxides of titanium, and oxides of niobium.
1 . A method for producing an optical article, comprising:
forming a first layer that is light-transmissive on an optical substrate directly or with another layer in between; and
reducing the resistance of at least a portion of a surface layer of the first layer by ion-assisted deposition of at least one composition selected from the group consisting of titanium, niobium, oxides of titanium, and oxides of niobium.
2 . A method for producing an optical article according to claim 1 , wherein the reducing step includes mixing titanium, niobium, and oxygen in at least a portion of the surface layer of the first layer.
3 . A method for producing an optical article according to claim 1 , wherein the reducing step includes titanium-niobium-oxidizing at least a portion of the surface layer of the first layer.
4 . A method for producing an optical article according to claim 1 , wherein
the first layer is a layer containing an oxide of titanium, and
the reducing step includes ion-assisted deposition of niobium or an oxide thereof.
5 . A method for producing an optical article according to claim 1 , wherein
the first layer is a layer containing an oxide of niobium, and
the reducing step includes ion-assisted deposition of titanium or an oxide thereof.
6 . A method for producing an optical article according to claim 1 , wherein
the first layer is an oxide layer containing no titanium or niobium, and
the reducing step includes:
ion-assisted deposition of titanium or an oxide of titanium, followed by ion-assisted deposition of niobium or an oxide of niobium; or
ion-assisted deposition of niobium or an oxide of niobium, followed by ion-assisted deposition of titanium or an oxide of titanium.
7 . A method for producing an optical article according to claim 1 , wherein the first layer is a layer included in an antireflection layer with a multilayer structure.
8 . A method for producing an optical article according to claim 7 , further comprising forming an antifouling layer on the first layer directly or with another layer in between.
9 . A method for producing an optical article according to claim 1 , wherein the optical substrate is a plastic lens substrate.
10 . A method for producing an optical article according to claim 9 , wherein the optical article is a spectacle lens.