To provide a method of manufacturing a resin for a rotary optical element which does not require highly technical processing or operation such as crystallization adjustment and polishing processing for precision improvement, can form an optical rotation face of a large area, and has uniform optical rotation, to provide a resin for the element obtained by the method, and to provide an optics element made of the resin.

The method of manufacturing the optical rotation optics element resin which orients an optically active polymer including a compression fluid (A) under a super critical pressure and super critical temperature of the fluid (A), the resin is obtained according to the manufacturing method, and the optical rotation optics element comprises the resin.