| 摘要 |
A polycarbonate copolymer including a repeating unit represented by the following formula (1) and having a copolymerization molar ratio represented by Ar 2 /(Ar 1 +Ar 2 ) of 30 mol% or more and 47 mol% or less. In the formula (1), Ar 1 is a group represented by the following formula (2a) or (2b) and Ar 2 is a group represented by the following formula (3); and n is an average number of repetition and is 1.12 or more and 2.34 or less. |
