一种全动变焦系统的高斯参数计算方法探究  

New Method for All Movable Zoom Lens First Order Design

作　　者：黄浩[1] 李湘宁[1,2,3] 宋强 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海20093 [2]上海市现代光学系统重点实验室,上海20093 [3]教育部光学仪器与系统工程研究中心,上海20093 [4]联想(上海)研究院,上海200124

出　　处：《光学学报》2015年第A01期334-343,共10页Acta Optica Sinica

摘　　要：为了寻找多组全动型变焦系统的解算方法及降低全动型变焦距系统设计时时经验的过分依赖，提出了一种方法用于计算全动变焦系统组元的光焦度分配。以中焦端结构为初始结构，将组元的间距设为变量，构造出不同变焦位置的运动方程，并设置适当的边界条件，用粒子群优化算法求得最佳解。该最佳解就是不同变焦位置处各组元的位置。该方法在一定程度上降低了变焦系统光焦度分配的难度，更为变焦系统高斯结构求解提供了一种新的思路。为了验证该方法，优化了一个100倍的变焦系统。该方法为全动变焦光学系统的设计提供了一个可行的技术参考。In order to get the simple computational formula for all movable zoom lens and reduce excessive dependence on designing experience of zoom lens, a new way to calculate optical-power distribution of zoom system is proposed. Taking the medium zoom position as initial parameter and the distances of groups as independent variables, the motion differential equations of all zoom positions is generated. With algorithm of partical swarm optimization under certain constraints, the best solutions are gotten, which are the positions of all groups in all zoom positions. This method reduces the difficulty of optical-power distribution in zoom lens system. What＇s more, it provides a new way to get initial Gauss parameters of zoom system. A 100 × Gauss structure with six components zoom system is designed, and the feasibility of this method is proved with it. The method can provide a practical and technical reference for all movable zoom lens system.

关 键 词：光学设计 变焦系统 初始结构 光焦度分配 粒子群算法 

分 类 号：O439[机械工程—光学工程]