摘要
为了适应军用瞄准镜的作战需求,针对传统目镜系统存在出瞳距较短、成像质量差等问题,本文设计了一款非球面长出瞳距目镜,出瞳距达到了90 mm,相对镜目距为3.3。首先,在由球面构成的折射式目镜光学系统的基础上,然后为了进一步提高目镜系统的成像质量及简化系统结构,引入非球面设计,得到了含有非球面的折射式长出瞳距目镜,由5片透镜组成。结果表明:在50 lp/mm空间频率处,采用非球面设计的长出瞳距目镜,全视场MTF(Modulation Transfer Function)均超过了0.4。对该目镜的各项公差和成像质量进行了分析,公差合理,像质优良;光学系统总长为48.3 mm,重量为129.2 g,对比传统折射式目镜,光学总长缩短了24.2%,重量减轻了35.7%,具有结构紧凑、重量轻、像质高等特点。
In view of the problems of the short pupil distance and poor imaging quality of traditional eyepiece systems,an aspheric long interpupillary eyepiece with an interpupillary distance of 90 mm and a relative lens distance of 3.3 is designed to adapt military sighting devices for combat needs.First,based on a refractive eyepiece optical system composed of a spherical surface,an aspheric design is introduced to further improve the imaging quality of the eyepiece system and simplify the system structure,and a refractive long interpupillary eyepiece containing an aspheric surface is obtained,which consists of five lenses.The results show that at a spatial frequency of 50 lp/mm,the Modulation Transfer Function(MTF)of the entire field of view exceeds 0.4 for long interpupillary eyepieces with an aspheric design.The tolerances and imaging quality of the eyepiece were analyzed;the tolerances are reasonable,and the image quality is excellent.The total length of the optical system is 48.3 mm and the weight is 129.2 g,whereby the length was shortened by 24.2%and the weight reduced by 35.7%compared with a traditional refractive eyepiece.Therefore,being lightweight,it has the characteristics of a compact structure,and exhibits a high image quality.
作者
刘小华
王劲松
孔诗媛
唐卓
LIU Xiaohua;WANG Jinsong;KONG Shiyuan;TANG Zhuo(College of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;Zhongshan Institute,Changchun University of Science and Technology,Zhongshan 528437,China)
出处
《红外技术》
北大核心
2025年第5期546-552,共7页
Infrared Technology
基金
吉林省科技发展计划重点研发项目(20200401063GX)。
关键词
目镜
长出瞳距
光学设计
非球面
eyepiece
long exit pupil distance
optical design
aspherical
作者简介
刘小华(1998-),男,硕士,主要从事光学设计方面的研究。E-mail:1090180914@qq.com;通信作者:王劲松(1973-),男,教授,主要从事光电测试技术及仪器、视光学技术及仪器方面研究。E-mail:Soldier_1973@163.com。
