研制了高速电光晶体开关阵列数字光束扫描器。光束扫描器由电光分束单元和偏转棱镜阵列构成。电光分束单元是通过铌酸锂电光开关与偏振分光棱镜的组合实现。电光分束单元按照多级级联和空间组合构成3×3矩形光束扫描阵列。光束扫描阵列后加棱镜阵列使光束产生需要的角度偏转，可以实现远场大范围光束阵列扫描。同时可以实现激光光束扫描和跟踪的实时可编程控制。系统的实验研究表明光束扫描器的设计参数与实验测量结果吻合。

A high-speed digital beam scanner based on electro-optic crystal switch array is developed. The scanner is composed of electro-optic beam splitter unit and deflection prism array. The electro-optic beam splitter unit is combined by LiNbO3 electro-optic switch and polarized beam splitter. The 3×3 rectangle beam scanning array is achieved by multistage cascade and space composition of electro-optic beam splitter units. The prism array behind beam scanning array can provide required angle deflection. The large-range far-field beam array scanning can be achieved. The beam scanning and tracking can be real-time controlled by programming. The systematical experiments confirm that the designed parameter of beam scanner agrees with the measured results.