Based on the formula of elliptically polarized light, the relation between the elliptically polarized light s rotational direction and its phase difference is discussed.

• 从椭圆偏振光的表达式出发,讨论了椭圆偏振光的旋转方向与位相差的关系,由此提出了椭圆(圆)偏振光旋转方向的判定法则。