大焦深波前编码光学系统相位板设计  

Phase Plate Design for Large Focal Depth Wavefront Coded Optical Systems

作　　者：梁明 赵金辉 胡源[2] LIANG Ming;ZHAO Jinhui;HU Yuan(Changchun College of Electronic Technology,Changchun 130000 China;Changchun University of Science and Technology,Changchun 130000 China)

机构地区：[1]长春电子科技学院,长春130000 [2]长春理工大学,长春130000

出　　处：《电光与控制》2022年第9期64-69,共6页Electronics Optics & Control

基　　金：吉林省科技厅中青年科技创新领军人才及团队项目(20200301042RQ)。

摘　　要：设计了一种相位板,用来拓展初始光学结构的景深。对于波前编码光学成像系统的设计提出了几个需要考虑的事项及设计需求,并根据这些事项结合选定的基本参数,利用Zemax设计了一个光学系统的初始结构并优化。该初始结构是一个物距为4 m、F数为3、有效焦距为50 mm的像质良好的成像物镜。添加选择的三次相位板,其面型为扩展多项式。通过设置复杂的评价函数,将相位板的三次项系数作为变量,然后将相位板优化,得到其参数。最后通过传统光学系统和添加相位板的光学系统的各种数值对比,分析得出该设计的景深能够实现从4 m拓展到2.5 m至8 m。A phase plate is designed to extend the depth of field of the initial optical structure.Several considerations and design requirements for the design of wavefront coding optical imaging system are proposed.According to these matters and the basic parameters selected,the initial structure of an optical system is designed and optimized by Zemax.The initial structure is an imaging objective lens with an object distance of 4 m,F number of 3 and effective focal length of 50 mm.The surface type of the selected cubic phase plate is extended polynomial.By setting a complex evaluation function,taking the cubic coefficient of the phase plate as a variable,and then optimizing the phase plate to obtain its parameters.Finally,through the numerical comparison between the traditional optical system and the optical system with phase plate,it is concluded that the depth of field of the design can be extended from 4 m to the range of 2.5 m to 8 m.

关 键 词：光学成像系统 波前编码 相位板设计 ZEMAX 优化 

分 类 号：O439[机械工程—光学工程]