A polycarbonate resin, a polycarbonate resin composition, an optical film and a polycarbonate resin molded article

The present invention provides a polycarbonate resin, a polycarbonate resin composition, an optical film and a polycarbonate resin molded article, the polycarbonate resin has excellent heat resistance and transparency, the polycarbonate resin contains structural units derived from a specific dihydroxy compound. The present invention relates to a polycarbonate resin, characterized in that it contains at least a polycarbonate resin derived from a dihydroxy compound having the following structural formula key structure (1), the following structural formula (2) terminal groups ratio (a / B) of the number (a) of all the presence of (B) has an end in the range of 20% or more. Wherein the oxygen atom (1) in formula is not bonded to a hydrogen atom. .