To monitor the plume ultraviolet (UV) radiation during the satellite attitude adjustment, we need to develop an optical system with UV spectral range, large field of view and small size. Based on the principle of UV imaging, the initial structure with large field of view and aperture is realized by using two optical materials of fused silica and calcium fluorite. The scheme of all spherical surface optical system with focal length of 25 mm, field of view of 40° and aperture F number of 2 is introduced. The optical system is optimized by using optical design software Zemax and Code V, and the UV imaging lens that satisfies the requirement is obtained. The diameters of defocus spot for all fields of view are less than 11 μm, and transfer functions of all fields of view are better than 0.6 at the detector′s characteristic frequency of 40 lp/mm, which satisfy the requirements of fabrication and state. Compared with the other UV objective lenses, the proposed system achieves large field of view and aperture, and the surfaces of the lenses are all sphere. Which can effectively reduce the cost and shorten the process cycle.