改进了现有的基于径向双折射晶体的横向超分辨滤波器.通过调整偏振器的偏振方向和晶体光轴之间的夹角,改进的滤波器可以实现更广的超分辨可调范围,并且在相同的条件下,相对于现有的连续振幅型超分辨光瞳滤波器,超分辨性能和焦深都有较大提高.改进的超分辨滤波器,为实际应用提供了更多方便. The existing transverse superresolution filter based on radial birefringent crystal is improved.Adding the angle between the polarization direction of the polarizer and the optical axis of the crystal, the improved filter can achieve a wider range of super resolution, Compared with the existing continuous-amplitude super-resolution pupil filter, the super-resolution and depth of focus are greatly improved under the same conditions.The improved super-resolution filter provides more convenience for practical applications.