高视放大率军用瞄准目镜的设计

Design of high magnification eyepiece for military sight

为了满足现代军事对于瞄准镜的需求,设计了一种高视放大率军用瞄准目镜,分析了大倍率目镜的像差特性和设计难点,选择使用正-正-负的结构形式。在Code V软件中进行了仿真和优化,最终设计的系统视放大率为16×,焦距为15.62 mm,出瞳直径为6 mm,出瞳距离为25 mm,靶面尺寸为1/3″,系统总长40.4 mm。结果表明,系统在40 lp/mm处的MTF均达到0.2以上,全视场内的畸变小于5%,满足目镜光学系统像质要求。

In order to meet the requirement of modern military sighting,a high magnification eyepiece for military sight was designed. The aberration characteristics and technical difficulties of high magnification eyepiece are analyzed. A structure of positive-positive-negative is put forward. Simulation and optimization were carried out by software Code V. The magnification of the optical system is 16 ×,the EFL is 15. 62 mm,the diameter of the exit pupil is 6 mm while the distance of the exit pupil is 25 mm,the display size is 1/3″,and the total length is 40. 4 mm. The results show that the MTF of the entire FOV is above 0. 2,the distortion is less than 5%. The image quality can meet the needs of the application.