覆盖“日盲”紫外到近紫外波段的光学材料少，增加了小 F数、大视场宽谱段紫外高光谱成像仪设计的难点。本文仅采用熔融石英和氟化镁两种材料，设计了一套宽谱段紫外高光谱成像仪，光谱范围为 250～400 nm，焦距 15 mm，F数 3.2，视场 31°。系统实现了模块化设计，前置成像镜头和后接光谱仪可独立成像。为保证对接后高光谱成像仪具有较好的像质，紫外镜头采用像方远心设计；光谱仪采用 Offner结构，且反射镜实现了一体化设计，由两个元件组成，可实现同轴安装，极大降低了装调难度。对接后紫外高光谱成像仪像质较好，系统结构紧凑，外形尺寸仅有 128 mm×60 mm×60 mm，实现了系统轻小型化设计。

To design an ultraviolet imaging instrument with wide spectrum, small F number and large field of view is quite difficult due to the short of optical materials that can be used in the UV lens, especially the lens covering “solar blind” ultraviolet to near ultraviolet waveband. In this paper, a wide spectrum ultraviolet hyper-spectral imager was designed using F_SILICA and MgF2 only, whose wavelength was 250-400 nm, focal length was 15 mm, F number was 3.2, and total field of view was 31 degrees. The system has modular design, which can be a big advantage for the pre imaging lens and the rear spectrometer imaging independently. Additionally, the UV lens was designed with the near image to ensure good image quality for the hyper-spectral imager. Moreover, the reflecting Offner spectrometer was integratively designed with only two elements and can be mounted in line, which largely reduced the difficulty of installation and adjusting. The system is compact and small with the size of 128 mm×60 mm×60 mm.