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基于Delano图的手机镜头光学系统设计

Optical System Design for Cell Phone Camera Lens Based on Delano Diagram

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摘要

手机镜头朝着高分辨率、大孔径、超薄化的发展方向。根据手机镜头的设计要求, 研究了设计要求参量与Delano图的相关约束条件和目标函数的转换关系, 结合蒙特卡罗-粒子群优化(PSO)混合算法, 实现了手机镜头初始结构的快速求解生成。使用所提出的方法设计了一款5片式2000万高像素的超薄长焦手机镜头, 结果表明, 在1/4奈奎斯特设计频率125 lp/mm下, 0.8之内所有视场的调制传递函数(MTF)的值均大于60%, 与采用前期PWC法求得的初始结构所设计开发的具有相同规格参数的6片式镜头相比, 边缘视场的模拟良率提升了近10%。将所设计的5片式2000万像素镜头进行加工及TV line实拍测试, 在中心和0.8视场分别得到了2300 LW/PH和1700 LW/PH的解像能力。设计和加工后的实拍验证结果表明, 基于Delano图的手机镜头初始结构的求解方法能够明显提高设计效率, 且可以得到更高的良品率。

Abstract

Nowadays, cell phone lens is developing towards high resolution, large aperture and ultra-thin thickness. According to the design requirement of cell phone lens, we study the relationship between the design parameters and constrain conditions and objective function in Delano diagram. With the Mente Carlo-particle swarm optimization (PSO) hybrid optimization algorithm, the automatic generation of the cell phone lens initial configuration is realized. Taking the proposed method, we design a 5 pieces-twenty million pixels and ultra-thin tele-lens of cell phone. The design results show that the modulation transfer function (MTF) is greater than 60% within 0.8 field of view at the 1/4 Nyquist frequency 125 lp/mm. Compared with the 6 pieces lens with the same design requirement parameters, which is based on PWC method, the yield rate is increased by 10% at the edge of view by the tolerance simulation. By the TV line test of the 5 pieces-twenty million pixels lens after the fabrication, the resolving power of 2300 LW/PH and 1700 LW/PH at the centre and the 0.8 field of view are obtained. The outcome of design, manufacturing and TV line test show that, the solving method of initial configuration for cell phone lens based on Delano diagram can help to improve the design efficiency and get higher yield.

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中图分类号:O439

DOI:10.3788/lop55.092203

所属栏目:光学设计与制造

收稿日期:2018-03-09

修改稿日期:2018-04-19

网络出版日期:2018-04-25

作者单位    点击查看

戴付建:舜宇光学科技(集团)有限公司研发部, 浙江 宁波 315400
张凯元:舜宇光学科技(集团)有限公司研发部, 浙江 宁波 315400
李闯:长春理工大学光电工程学院, 吉林 长春 130022

联系人作者:戴付建(doffery@sunnyoptical.com)

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引用该论文

Dai Fujian,Zhang Kaiyuan,Li Chuang. Optical System Design for Cell Phone Camera Lens Based on Delano Diagram[J]. Laser & Optoelectronics Progress, 2018, 55(9): 092203

戴付建,张凯元,李闯. 基于Delano图的手机镜头光学系统设计[J]. 激光与光电子学进展, 2018, 55(9): 092203

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