Patent ID: 7008571

Claim:
An optical component obtained by molding a poly(thio)ester (co)polymer comprising a repeating structural unit represented by the formula (1-A) as an essential structural unit: wherein R 11 is a cyclic alkylene group, straight-chain or cyclic alkylene group containing at least one sulfur atom in a sulfide group, or a combination of the straight-chain and cyclic alkylene groups; R 12 is a mono- or poly-cyclic aliphatic dicarboxylic acid residue; and X 11 and X 12 are each independently an oxygen atom or sulfur atom, and when X 11 and X 12 are the oxygen atoms, R 11 is a straight-chain or cyclic alkylene group containing at least one sulfur atom in the sulfide group, or a combination of the straight-chain and cyclic alkylene groups.