为了拓展成像光谱仪的紫外光谱范围，设计了以高温相偏硼酸钡晶体为双折射材料的渥拉斯顿棱镜。采用计算机模拟的方法进行了理论分析，取得了参量数据图。偏硼酸钡渥拉斯顿棱镜的分束角在紫外区随波长变长呈非线性关系，但在小结构角的情况下有利于整个光谱区内分束角的稳定; 棱镜结构角加大会使视场角变小，增大棱镜的结构角和宽度有利提高光谱分辨率。结果表明，当在紫外光至可见光波段使用时，高温相偏硼酸钡渥拉斯顿棱镜设计厚度为6mm～8mm，结构角不大于15°，入射角控制在1°内比较合适。这一结果为进一步研制可用于紫外光谱范围的成像光谱仪提供了必要的理论依据。

In order to expand the ultraviolet range of an imaging spectrometer, a Wollaston prism was designed based on the birefringent material of α-BBO crystal. After theoretical analysis and simulation, the data graphs were obtained for some parameters. The splitting angle of the BBO-Wollaston prism has the non-linear relationship with the longer wavelength in the ultraviolet region, but beneficial to the stability of the beam angle in the entire spectral region; larger structure angle will make the field of view angle becomes smaller, and larger structural angle and width will help to promote the spectral resolution. Comprehensive research show that it is proper to design a α-BBO crystal Wollaston prism in thickness from 6mm to 8mm, with the structure angle α≤15 °and the angle of incidence smaller than 1° in the ultraviolet to visible band. The results provide a theoretical basis for the further development of imaging spectrometers used in ultraviolet spectrum range.