聚酯树脂、光学透镜及光学透镜系统;POLYESTER RESIN, OPTICAL LENS AND POPTICAL LENS SYSTEM

摘要

本发明之聚酯树脂主要含有二醇构成单元与二羧酸构成单元，前述二醇构成单元中之10~84莫耳%系来自乙二醇之构成单元，前述二醇构成单元中之16~90莫耳%系来自特定之式(i)表示之新戊二醇之构成单元，前述二羧酸构成单元中之50~100莫耳%系来自萘二羧酸之构成单元。又，本发明之光学透镜系将上述聚酯树成形而得。再者，本发明之光学透镜系统包括上述光学透镜与其他光学透镜。 A polyester resin according to the present invention comprises mainly diol structural units and dicarboxylic acid structural units, wherein 10 to 84 mol% of the diol structural units are structural units derived from ethylene glycol, 16 to 90 mol% of the diol structural units are structural units derived from a specific neopentyl glycol represented by formula (i), and 50 to 100 mol% of the dicarboxylic acid structural units are structural units derived from naphthalenedicarboxylic acid.　 Further, an optical lens according to the present invention is obtained by molding the polyester resin.