激光探测双胶合透镜校正光学像差方法

Optical aberration correction method by double glued lens for laser detection

针对制导装置光学系统小型化和提高光斑像质的问题,基于初级像差理论,同时结合仿真与像质评价软件,提出了通过设计双胶合透镜组来校正光学像差的方法。该方法在光学系统初始设计阶段引入初级像差理论,设计双胶合透镜来校正光学系统的固有像差,使用像质评价软件对整个光学系统生成的光斑质量进行评估。结果表明,双胶合光学系统的生成的光斑在满足巡飞武器用激光半主动制导装置的指标要求的同时,能以较小的设计空间(入瞳直径D=30 mm,透镜组物方面到光敏面的距离为21.5 mm,从入瞳光阑到光敏面的距离是45.5 mm)有效减少单透镜带来的光学像差。

Aiming at the problems of miniaturizing the optical system of the guidance device and improving the image quality of the spot,this paper proposes a method of correcting optical aberration by designing a doublet lens group based on the theory of primary aberration and combining with simulation and the image quality evaluation software.This method introduces the primary aberration theory in the initial design stage of the optical system,designs a doublet lens to correct the inherent aberration of the optical system,and uses the image quality evaluation software to evaluate the quality of the light spot generated by the entire optical system.The results show that the light spot generated by the double-glued optical system can effectively reduce the optical aberration caused by the single lens with a small design space while meeting the index requirements of the semi-active laser guidance device for cruising weapons.The specific optical parameters for the small design space are:the entrance pupil diameter D=30 mm,the distance from the lens group to the photosensitive surface is 21.5 mm,and the distance from the entrance pupil diaphragm to the photosensitive surface is 45.5 mm.