便携多表面反射式望远系统光学设计  

Optical Design of Portable Multi-Surface Reflective Telescope System

作　　者：徐乾智 王洋[1] 黄蕴涵 付跃刚[1] Xu Qianzhi;Wang Yang;Huang Yunhan;Fu Yuegang(School of Electro-Optical Engineering,Changchun University of Science and Technology,Changchun,Jilin 130022,China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《光学学报》2021年第7期108-113,共6页Acta Optica Sinica

基　　金：吉林省科技发展计划项目优秀青年人才基金(20190103046JH)。

摘　　要：为了减小手持双目望远系统的体积与质量,在单片多表面光学系统原理的基础上,建立了单片多表面望远系统的模型,构建了中心厚度与遮拦比的关系表达式,通过计算得到了系统的初始结构,并进一步优化出一款便携多表面反射式望远系统。该望远系统由单片透镜组成,光线在透镜中发生4次反射,各反射面均为偶次非球面。系统的工作波段为可见光,放大倍率为5×,透镜的基底为聚甲基丙烯酸甲酯,直径为15 mm,总长为5 mm,全视场为1.15°。优化后的镜头全视场波像差满足使用要求,光学传递函数(MTF)曲线平滑,在60 lp/mm处大于0.2,成像质量良好。通过将优化系统与传统的伽利略式望远系统进行对比,发现该系统满足市场对于便携式望远系统的需求。In order to reduce the volume and weight of the hand-held binocular telescope,based on the principle of the single-chip multi-surface optical system,this paper establishes the model of the single-chip multi-surface telescope,constructs the relationship expression between the center thickness and the shielding ratio,obtains the initial structure of the system by calculation,and further optimizes a portable multi-surface reflective telescope.The telescope consists of a single lens,in which the light is reflected for four times in the lens,and each reflecting surface is an even aspheric surface.The working band of the system is visible light band,the magnification is 5×,the base of the lens is PMMA,the diameter is 15 mm,the total length is 5 mm,and the full field of view is 1.15°.The optimized full-field wave aberration of the lens meets the requirements of use,the optical modulation transfer function(MTF)curve is smooth and greater than 0.2 at 60 lp/mm,and the image quality is good.By comparing the optimized system with the traditional Galileo telescope system,it is found that the system meets the market demand for portable telescope systems.

关 键 词：光学设计 小型化 望远系统 环形孔径 折叠光路 

分 类 号：O439[机械工程—光学工程]