Plastic lens and method of producing plastic lens

1. A plastic lens comprising a plastic lens substrate having formed thereon a primer layer, a hard coat layer and an organic antireflective layer, in the order from the surface of the plastic lens substrate, the hard coat layer being a coating film containing a multifunctional epoxy compound, and formed from a coating composition comprising the following component A, component B and component C:

Component A: Metal oxide fine particles having an average particle diameter of 1 to 200 nm and selected from composites of an oxide of titanium and an oxide of Silicon, Aluminum, Tin, Antimony, Tantalum, Cerium, Lanthanum, Iron, Zinc, Tungsten, Zirconium, or Indium;

Component B: An organosilicon compound represented by the following formula:

R 1 SiX 1 3

wherein R 1 represents an organic group with 2 or more carbon atoms, having a polymerizable reactive group, and X 1 represents a hydrolysable group;

Component C: A compound having a biphenyl sulfide structure, represented by the following formula (1):

wherein R and R′ each represent a hydrocarbon group or a hydroxyl group, and n is from 0 to 5,

wherein the primer layer is formed from a coating composition containing a polyester resin;

and wherein the organic antireflective layer is a coating film formed from a coating composition comprising the following components D and E, and has a refractive index at least 0.20 lower than the refractive index of the hard coat layer,

Component D: An organosilicon compound represented by the following formula:

R 2 n R 3 m SiX 2 4-n-m

wherein R 2 represents an organic group having a polymerizable reactive group, R 3 represents a hydrocarbon group having from 1 to 6 carbon atoms, X 2 represents a hydrolyzable group, n is 0 or 1, and m is 0 or 1;

Component E: Silica fine particles having an average particle diameter of from 1 to 150 nm, having inner voids, and having a refractive index in a range of from 1.16 to 1.39.

2. The plastic lens as claimed in claim 1 , wherein the component C is contained in the coating composition in an amount of from 0.03 to 1.0% by weight based on the weight of the solid content in the coating composition.

3. A method of producing a plastic lens, which comprises a step of forming a primer layer on a plastic lens substrate, a step of forming a hard coat layer on the primer layer using a coating composition containing a multifunctional epoxy compound and comprising the following component A, component B and component C, and a step of forming an organic antireflective layer having a refractive index at least 0.20 lower than a refractive index of the hard coat layer using a composition comprising the following component D and component E,

Component A: Metal oxide fine particles having an average particle diameter of 1 to 200 nm and selected from composites of an oxide of titanium and an oxide of Silicon, Aluminum, Tin, Antimony, Tantalum, Cerium, Lanthanum, Iron, Zinc, Tungsten, Zirconium, or Indium;

Component B: An organosilicon compound represented by the following formula

R 1 SiX 1 3

wherein R 1 represents an organic group with 2 or more carbon atoms, having a polymerizable reactive group, and X 1 represents a hydrolysable group;

Component C: A compound having a biphenyl sulfide structure, represented by the following formula (1):

wherein R and R′ each represent a hydrocarbon group or a hydroxyl group, and n is from 0 to 5;

Component D: An organosilicon compound represented by the following formula:

R 2 n R 3 m SiX 2 4-n-m

wherein R 2 represents an organic group having a polymerizable reactive group, R 3 represents a hydrocarbon group having from 1 to 6 carbon atoms, X 2 represents a hydrolyzable group, n is 0 or 1, and m is 0 or 1;

Component E: Silica fine particles having an average particle diameter of from 1 to 150 nm and have inner voids;

and wherein the primer layer is formed from a coating composition containing a polyester resin.