It is shown that with such filter transverse or axial superresolution can be realized just by changing the angle between the polarizers and the radial birefringent element.

• 由分析得出通过改变径向双折射滤波器中偏振器的偏振方向和双折射元件的主轴之间的夹角，即可实现光学系统的横向超分辨或轴向超分辨。