为解决目前大多数紫外成像仪存在的定位和指向精度差、色差较大、分辨率及光能利用率不足等问题, 设计了一款高分辨率的大孔径消色差紫外光学系统。首先, 根据电晕放电检测的应用需求, 提出了紫外光学系统的总体设计。然后利用熔石英及氟化钙两种材料的不同色散特性, 根据改进的双胶合透镜结构设计了一款大孔径的消色差紫外光学系统, 并对该系统进行了公差分析。设计的紫外光学系统在全视场全探测范围内点列图均方根直径＜008 mm, 分辨率为20 lp/mm, 满足电力行业中对电晕探测的需求。

In order to solve the problems such as the deficiency of positioning and pointing accuracy, large chromatic aberration, insufficient resolution and energy utilization efficiency, a high-resolution large aperture achromatic UV optical system is designed. First, based on the application requirements of corona discharge detection, the overall design requirements of UV optical system are proposed. Then, using the different dispersion characteristics of both fused silica and calcium fluoride, a large aperture achromatic UV optical system is designed according to the improved double-cemented lens structure, and the tolerance analysis of the system is carried out. The results show that the ultraviolet optical system designed in this paper has a dot-matrix root mean square diameter less than 008 mm and a resolution of 20 lp/mm within the full field of view, which meets the requirements of the power industry for corona detection.