Polycarbonate resin composition

A polycarbonate-based resin composition, comprising:

• a polycarbonate-polyorganosiloxane copolymer (A);
• and
• at least one kind of compound (B) selected from the group consisting of an antioxidant, a release agent, a flame retardant, a UV absorber, a silicone-based compound, an epoxy compound, and a polyether compound,
• wherein the polycarbonate-polyorganosiloxane copolymer (A) consists of a polycarbonate block (A-1) comprising a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) containing a repeating unit represented by the following general formula (II),
• wherein the polycarbonate-based resin composition does not comprise a dye;
• wherein the polycarbonate-based resin composition does not comprise a light-diffusing agent;
• and
• wherein the following requirements (1) to (3) are satisfied:
• (1) a content of the polyorganosiloxane block (A-2) in the polycarbonate-based resin composition is from 40 mass % or more to 70 mass % or less;
• (2) the polycarbonate-polyorganosiloxane copolymer (A) has a viscosity-average molecular weight of from 10,000 or more to 23,000 or less;
• and
• (3) a bisphenol A (BPA) block represented by the following formula (I-i) constitutes 90 mass % or more of the polycarbonate block (A-1),
• wherein R1 and R2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, an arylene group having 6 to 12 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO2—, —O—, or —CO—, R3 and R4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and “a” and “b” each independently represent an integer of from 0 to 4,