距离选通式半导体激光夜视系统

距离选通式半导体激光夜视系统是采用高功率脉冲半导体激光器作为夜视系统的照明光源、以微光管作为接收传感器的主动成像夜视系统。介绍了半导体激光夜视系统中所采用的高质量脉冲半导体激光光源技术及距离选通技术。其中光束准直整形技术和改善光场均匀性技术是脉冲半导体激光夜视系统的关键技术。距离选通式激光夜视系统消除了脉冲激光带来的后向散射及杂散光的干扰,提高了接收信噪比,可获取清晰的夜视图像。实验证明采用距离选通式半导体激光夜视系统可在很差的气象条件下工作,并可获得清晰图像,作用距离达5 km。该系统不仅用于军事领域也可用于边防、公安、搜救、监控等其他领域。

Semiconductor Laser in Range-Gated Night Vision System

Range-gated night vision system with semiconductor pulse laser is an active image-forming system, which takes high power semiconductor laser and shimmer tube as lighting source and receiving sensor, respectively. Night vision system of semiconductor laser introduced in this paper adopts high quality semiconductor laser lighting source technology and range-gated technology, whose key technology is the semiconductor laser beam shaping and proportion technique. The system can eliminate the impact of back scattering light and stray light brought by the pulse laser and increase signal-to-noise ratio. It can obtain plain night vision figures. Experiments prove that the range-gated night vision system can obtain plain night vision figures in bad weather condition. Its function distance can reach to 5 km. Not only can the night vision system of semiconductor laser be used in military field, but also in frontier defense, public security, searching rescue, monitor field, etc.