基于铒玻璃激光器的激光射击光学系统设计

Design of Laser Shooting Optical System Based on Erbium Glass Laser

为真实模拟实弹射击场景,降低军事射击训练成本,设计了一种基于铒玻璃激光器的激光射击光学系统。该系统采用两级激光扩束,将铒玻璃激光器出射光束发散角二次压缩,实现极小发散角光束出射,提升了激光射击过程的人眼安全性。铒玻璃激光器出射光束发散角为15 mrad,出射光斑直径0.3 mm,激光扩束倍率300倍,系统出射光束发散角达0.035mrad。距光学系统出光口1 km位置,激光光斑直径约为120 mm,可满足千米射击训练要求,突破了常规激光射击系统百米量级的作用距离限制。设计的光学系统总长度为364mm,结构简单,利于工程化,应用前景广阔。

In order to simulate the real shooting scene and reduce the cost of military shooting training,a laser shooting optical system based on erbium glass laser is designed.The system uses two-stage laser beam expansion to compress the divergence angle of the output beam of the erbium glass laser twice and ensure the output of the beam with the minimum divergence angle.It improves the human eye safety during laser shooting.The divergence angle of the output beam of the erbium glass laser is 15mrad and the diameter of the output spot is 0.3 mm,the laser beam expansion rate is 300 times,and the beam divergence angle of the system is 0.035 mrad.1km away from the optical system outlet,the laser spot diameter is about 120 mm,which can meet the requirements of kilometer shooting training and break through the distance limit of the conventional laser shooting system.The total length of the designed optical system is 364 mm,the structure is simple,it is convenient for engineering,and the application prospect is broad.