道威棱镜的结构特性及其虚拟仿真

Structural Characteristics of Dove Prism and Its Virtual Simulation

利用几何光学原理,分析具有对称底角道威棱镜的结构特征,研究入射光线在主截面内的传输偏转特性,给出了对称底角所满足的条件,得到了道威棱镜长度与其底角关系的数学表达式.利用TracePro光学设计软件,对不同对称底角道威棱镜的信号图像传输和旋转特性进行虚拟仿真,结果显示,具有不同对称底角结构的道威棱镜均能实现信号图像的传输和旋转功能.该研究对现有45°底角道威棱镜的结构进行了有效补充和拓展,为道威棱镜的优化设计提供了思路.

Based on the principle of geometric optics,by analyzing the structural characteristics of Dove prism with symmetrical base angle and studying the transmission and deflection characteristics of incident light in the principal section,the conditions satisfied by the symmetrical base angle were given,and the mathematical expression of the relationship between the length of Dove prism and its base angle was obtained.Using TracePro optical design software,the signal image transmission and rotation of Dove prisms with different symmetrical base angles were simulated.The simulation results show that Dove prisms with different symmetrical base angle structures can realize the functions of signal image transmission and rotation.This study effectively supplements and expands the structure of the existing 45°base angle Dove prism,and provides a useful idea for the optimal design of Dove prism.