机载成像与高功率激光发射共孔径光学系统设计

Co-aperture optical system design for airborne imaging and high-power laser output

机载定向能装置具有光学成像与高功率激光发射的功能。为了保证机载定向能装置有效工作,要求共孔径光学系统在保证尺寸小型化的同时,能够在大温度范围下高光束质量输出激光。这对系统光机设计提出了很高的挑战。本文建立了适用于机载球形吊舱的共孔径光学系统初始结构设计模型以满足小型化成像和高光束质量输出的需求,提出了一种系统优化设计方法以保障系统在大温度范围有效工作。结合工程实例,完成了1 km~10 km范围工作、Φ500 mm包络的系统设计,并采用物理光学分析模块和有限元分析得到了光机集成计算分析结果,验证了该系统大温度范围的良好适应性,满足高能激光系统的工程应用需求。

Airborne directed energy device has the functions of optical imaging and high power laser emission.In order to ensure the effective operation of airborne directed energy device with high energy laser,the co-aperture optical system should be able to output laser with high beam quality in a large temperature range while keeping the size of the optical and mechanical system small.This poses a high challenge to the optical and mechanical design of the co-aperture system.In this paper,the initial structure design model of co-aperture optical system for airborne spherical pod is established to meet the requirements of miniaturization imaging and high beam quality output.An optical and mechanical system optimization design method is proposed to ensure the effective operation of the system in a large temperature range.Combined with an example,the design of a co-aperture optical and mechanical system with a range of 1 km~10 km andΦ500 mm envelope is completed.The results of the optical mechanical integrated calculation and analysis are obtained by using the physical optical analysis module and the finite element analysis.The good adaptability of the system in large temperature range is verified,which meets the engineering application requirements of high-power laser system.