Patent ID: 11958959
Assignee: FUJIFILM CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A lens for spectacles comprising:
a resin; and
a near-infrared absorbing agent having a maximum absorption wavelength in a thiourethane resin in a range of more than 700 nm and 1000 nm or less and a transmittance of light having a wavelength of 400 nm of 50% or more and 100% or less,
wherein the resin contains at least one selected from a thiourethane resin or an episulfide resin, and
wherein the near-infrared absorbing agent contains at least one selected from the group consisting of a compound represented by General Formula (1) and a compound represented by General Formula (2):, in General Formula (1), A1 represents a keto form of an acidic nucleus selected from the group consisting of General Formula (1-a) to General Formula (1-x);
A2 represents an enol form of an acidic nucleus selected from the group consisting of General Formula (1-a) to General Formula (1-x), where a hydroxy group in the enol form may be dissociated;
the acidic nuclei represented by A1 and A2 may be the same as or different from each other;
L1, L2, and L3 each independently represent a methine group;
M+ represents a proton or a monovalent counter cation, and n represents a number required to make the positive charge number and the negative charge number of a compound represented by General Formula (1) equal to each other; and
k represents 2 or 3,, in General Formula (1-a) to General Formula (1-x), each * represents a position at which the keto form of the acidic nucleus A1 is bonded to L1 and the enol form of the acidic nucleus A2 is bonded to L3;
X represents an oxygen atom or a sulfur atom; Y represents an electron-withdrawing group, Z represents a hydrogen atom, or a carbamoyl group, an alkyl group, an aryl group, a cyano group, a carboxyl group, an acyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a halogen atom, an amino group, an acylamino group, an alkylsulfonyl group, an arylsulfonyl group, or a sulfo group; and
R1, R2, R3, R4, R5, and R6 each independently represent a hydrogen atom or a monovalent substituent, and, in General Formula (2), R1a and R1b each independently represent an alkyl group, an aryl group, or a heteroaryl group;
Ar1 and Ar2 each independently represent a heteroaryl group; and
R2 and R3 each independently represent a hydrogen atom or a substituent, and R4, R5, R6, and R7 each independently represent a monovalent substituent.