Design of Super-Resolution Telescopic Imaging Optical System with Relative Large Field-of-View

A super-resolution telescope imaging optical system with a relatively wide field of view (FOV) is designed for space-based spatial exploration applications. The effects of various aberrations and modulator error on the super-resolution parameters of a five-ring pure phase pupil modulator with low side lobe factor arc studied herein. The asymmetric aberrations in the super-resolution telescope imaging system arc required to be strictly suppressed; however, the influence of these symmetrical aberrations is small, and different kinds of symmetrical aberrations can compensate each other. Therefore, a wide FOV and large aperture telescope optical baseline system having uniform image quality and certain amount of spherical aberration is optimally designed. When the modulator is added, it has a round and identical PSF in 0.28 degrees FOV, and the super-resolution ratio is not less than 1.25. Furthermore, the side lobe factor is less than 0.1. According to the characteristics of super-resolution telescopic system, a reasonable aberration tolerance model is established, which effectively controls the cost and difficulty of machining and assembly.