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isa:267423829
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In the optical unit of the present invention, one mode of the low Abbe number lens material comprises a polycarbonate copolymer (A) having structural units represented by the following general formulas (1) and (2): where R1 and R3 are each independently an alkyl group, an alkoxy group, a nitro group or a halogen atom; R2 is a hydrogen atom or a methyl group; k and 1 are each independently an integ
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