大孔径长焦距全画幅变焦镜头结构计算与优化设计  

Structural Calculation and Optimal Design of Large-Aperture Long-Focal-Length Full-Frame Zoom Lens

作　　者：温林凯 刘英[1] 姜洋[1] 邢妍[1] 孙强[1] Wen Linkai;Liu Ying;Jiang Yang;Xing Yan;Sun Qiang(Precision Instrument and Equipment Research and Development Center, Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun , Jilin 130033, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所精密仪器与装备研发中心,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《激光与光电子学进展》2019年第9期203-210,共8页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2018YFC0307900,2018YFC0308102)

摘　　要：提出了广义拉格朗日乘子(GLM)算法、内点法和修正序列二次规划算法三种优化算法。采用像差分布合理的正-负-正-负-正镜头结构,设定合理的普适性参数,利用所提的三种方法计算获得了变焦范围为30~100mm、恒定F数为2.8、视场角为24.421°~71.608°的全画幅变焦镜头的高斯结构,并分析对比了三种优化算法。利用实际镜组替换由GLM算法获取的高斯结构,采用全球面设计,获得了满足成像要求的全画幅变焦镜头的优化设计,三条变焦和补偿曲线均具有良好的线性度,系统调制传递函数在50lp/mm处的平均值均大于0.1,该全球面设计为后期基于非球面优化设计提供了良好的初始结构。Three optimization algorithms of generalized Lagrangian multiplier (GLM), interior point and modified sequence quadratic programming are proposed. By adopting a positive-negative-positive-negative-positive lens structure with a suitable aberration distribution and setting the reasonable and generally applicable parameters, the Gaussian structure of a full frame zoom lens with zoom range of 30-100 mm, constant F-number of 2.8, field-of-view angle of 24.421°-71.608° is obtained by the proposed three methods. These three optimization methods are analyzed and compared. The actual lens group is used to replace the Gaussian structure obtained by the GLM algorithm. The full spherical design is adopted and the obtained optimal design of the full-frame zoom lens meets the imaging requirements. Three zoom and compensation curves have good linearity, and the average value of the modulation transfer function of system is greater than 0.1 at 50 lp/mm. This full spherical design provides a good initial structure for the later aspheric optimal design.

关 键 词：光学设计 全画幅变焦镜头 最优化算法 高斯结构 

分 类 号：O439[机械工程—光学工程]