激光水下成像发射光学系统的研究

水下远距离激光主动成像系统对扩束发射光学系统的扩束能力及其对距离的适应性提出了较高的要求。为了在不同的成像距离处都获得适当大小的光斑，论文对激光水下成像发射光学系统进行了研究，设计了一种变倍的发射光学系统，研究了激光光束通过该发射光学系统的变换规律，推导了目标距离与变倍光学系统动镜组的位置调整量的数学关系，提出了激光水下成像变倍发射光学系统的控制方案。

Study of the Expanding System in Laser Underwater Imaging System

The active laser underwater imaging system of far distance puts strict demands on the expanding ability and adaptability to the distance of the expanding system.An expanding optical system is studied and designed for getting appropriate illuminating area at different imaging distance.The expanding system with the special rule that laser beams apply when transferring and transforming is analyzed.The mathematic relation between target position and modulating of the expanding optical system is discussed.A controlling project of the expanding optical system in laser underwater imaging system is raised at last.