一种反射共孔径式激光测距光学系统设计

Design of reflective laser ranging optical system with common aperture

基于激光测距系统的基本原理,结合反射系统的光学特性,引入光学环形器,设计了一种全反射共孔径式激光测距系统,激光发射系统与激光接收系统共用一个4倍望远系统,激光发射系统在其基础上后接一个5倍望远系统,激光接收系统在基础上后接一个激光聚焦光学系统。对系统进行公差分析与可靠性分析,确定了其加工材料、加工方法以及加工与装调上的精度与实际应用的可行性。为了节约加工成本,缩短加工周期,降低装调难度,系统较多使用二次曲面。整个系统成像质量好,能量集中度高,结构紧凑,重量轻,满足实际应用需求。

Based on the principle of laser ranging system and the optical characteristics of the reflective system, an all reflective laser ranging system with common aperture was designed by introducing optical circulator. The laser emit- ting system and receiving system share one 4 x telescopic system. On this basis, the laser emission system adds one 5× telescopic system and the laser receiving system adds a laser focusing system. By the tolerance analysis and relia- bility analysis of the system, the processing materials, processing methods, as well as the precision of processing and installation and the feasibility of practical application were determined. In order to save costs, shorten the processing cycle,reduce the difficulty of ahgnment, the system mairdy adopts quadric surface mirrors. Simulation results show that the whole system had good image quality, high energy concentration, compact structure and light weight, which can meet the requirements of practical application.