Optical element and optical polycarbonate resin composition for the preparation thereof

摘要

An optical element including an optical resin composition consisting essentially of a polycarbonate is disclosed. Said optical resin composition have a melt flow rate of more than or equal to 5.0 g/10 min. as measured based on ISO R-1133 Standard under the condition of 230 DEG C. and 5 kgf. and have a glass transition point of more than or equal to 100 DEG C. Said polycarbonate include a major repeating unit represented by the formula (I) or (II). <IMAGE> Formula (I) <IMAGE> Formula (II) wherein Ar1 and Ar2 each represent an arylene group or a cycloalkylene group; R represents an alkylene group, a cycloalkylene group, -O-, -O-Ar3-O-, -S-, -SO-, -SO2-, -SO2-Ar3-SO2-, -R1-Ar4-R1-, -O-R1-O-, <IMAGE> -CONH-R1-NHCO-, or -Ar5-R1-; Ar3 and Ar4 each represent a phenylene group or a bisphenylene group; R1 represents an alkylene group; R2 represents an alkyl group; Ar5 represents a cycloalkylene group, -R1-Ar4-R1-, -R1-Ar5-R1-, -R1-O-Ar4-O-R1-, or -R1-O-Ar4-X-Ar4-O-R1; and X represents -SO2-, -CO-, an alkylene group, or -R1-Ar4-R1-.