Optical members, compositions, methods and S-containing compounds for producing them

摘要

A novel optical member is disclosed. The optical member comprises a region having a distributed refractive index, wherein the region is formed from a composition used for producing an optical member comprising a polymerizable monomer and a compound represented by formula (1) (where R<1>, R<2 >and R<3 >independently denote a C1-20 alkyl group, C3-6 cycloalkyl group, halogen atom, CH2=CH-, R<4>-Y<1>- or R<4>-C(=Y<2>)Y<3>-, R<4 >denotes a C1-9 alkyl group, CH2=CH- or CH2=C(CH3)-, and Y<1>, Y<2 >and Y<3 >are independently oxygen or sulfur; l and n are respectively integers of 0 to 5 and m is an integer of 0 to 4, provided that at least one of l, m and n is not 0; q, u and v are independently integers of 0 to 2) having a refractive index differing from that of the polymerizable monomer;