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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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  • An optical unit comprising: a plastic lens having an Abbe number of 45-60; and a lens injection molded from a polycarbonate material comprising 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 grou
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