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1300万像素手机镜头设计

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文章导航 > 光电工程 > 2018 Vol. 45 > No. 2 > 170575

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耿雨晴, 赵烈烽, 张向东, 等. 1300万像素手机镜头设计[J]. 光电工程, 2018, 45(2): 170575. doi: 10.12086/oee.2018.170575
引用本文: 耿雨晴, 赵烈烽, 张向东, 等. 1300万像素手机镜头设计[J]. 光电工程, 2018, 45(2): 170575. doi: 10.12086/oee.2018.170575
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Geng Yuqing, Zhao Liefeng, Zhang Xiangdong, et al. Design of 13 mega-pixel mobile phone lens based on code V[J]. Opto-Electronic Engineering, 2018, 45(2): 170575. doi: 10.12086/oee.2018.170575
Citation: Geng Yuqing, Zhao Liefeng, Zhang Xiangdong, et al. Design of 13 mega-pixel mobile phone lens based on code V[J]. Opto-Electronic Engineering, 2018, 45(2): 170575. doi: 10.12086/oee.2018.170575
shu

1300万像素手机镜头设计

    • 1.

      华南理工大学物理与光电学院，广东省光电工程技术研究开发中心，广东 广州 510640

    • 2.

      广东烨嘉光电科技股份有限公司，广东 东莞 523000

  • 基金项目:
    广东省自然科学基金项目(2016A030313473, 2015A030310278)；广东省科技厅产学研重大专项(2016B090918057)；广州市科创委产学研重大专项(201704020038, 201704020182)；图像测量与视觉导航湖南省重点实验室开放基金资助项目
详细信息
    作者简介:
  • 耿雨晴(1993-)，女，硕士研究生，主要从事光学设计的研究。E-mail：phgengyuqing@mail.scut.edu.cn
    • *通讯作者: 葛鹏(1983-)，男，博士，副研究员，主要从事光学设计、图像处理的研究。E-mail：scpge@scut.edu.cn

  • 中图分类号: TN929.53

Design of 13 mega-pixel mobile phone lens based on code V

    • 1.

      Engineering Research Center for Optoelectronics of Guangdong Province, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510640, China

    • 2.

      Guangdong Yejia Opto-electronic Corporation, Dongguan, Guangdong 523000, China

  • Fund Project: Supported by Natural Science Foundation of Guangdong Province (2016A030313473, 2015A030310278), the Key Technologies R & D Program of Guangdong Province (2016B090918057) and the Key Technologies R & D Program of Guangzhou City (201704020038, 201704020182)
More Information
    摘要

  • 为满足高像素手机的要求，本文根据光学成像理论，利用code V软件设计出一种1300万像素手机镜头。为了增加自由度，减小像差，得到更好的像质，本文采用非球面表面进行光学设计。该镜头由五片非球面镜片、一片滤光镜组成。设计得到光圈值2.2，半视场角35°，有效焦距3.6 mm，镜头总长3.6 mm的轻薄型手机镜头。最终中心视场在中间频率处(即223 lp/mm)的MTF值大于0.6，在高频处大于0.2，在0.8视场中频MTF值大于0.4，可见优化完毕后成像效果可满足使用要求。

    In order to meet the unmet commerce needs of high pixel mobile phone, more and more designs come into being. According to the theory of ray optics, a 13 mega-pixel mobile phone lens was designed based on code V, an optical design software. It consists of five aspherical lenses and a filter. The F-number of the lens is 2.2, the half field of view is 35 degrees, the effective focal length is 3.6, and the total length of the lens is 3.6 mm. The MTF(modulation transfer function) of central field of view is greater than 0.6, the high frequency is greater than 0.2 and in the 0.8 field of view the middle frequency is greater than 0.4. In a word, the lens can meet the requirement of the high imaging quality camera.

    • Overview

  • Overview: To meet the unmet commerce needs of high pixel mobile phone, more and more designs come into being. With the maturity of the processing method of the aspheric surface, the improvement of the machining accuracy and applications of the manufacturing materials and CMOS sensor, both benefit the development of the high-quality lens. According to the theory of ray optics, a 13 mega-pixel mobile phone lens was designed based on code V, an optical design software. The sensor OV16880 has 5 mega-pixel which is made by Omnivision Company, whose pixel size is 1.12 μm×1.12 μm, so the limiting resolution is 446 lp/mm. In order to shorten the total lens length, effectively control the aberration and obtain better image quality, aspheric surfaces were used on each lens surface. For the sake of safety and cost saving, optical plastics were selected for design. Optical plastic is a kind of ideal material because of its good transmittance, well plasticity and low processing cost. The curvature and even non-spherical coefficients of each lens were set as variables. Code V can change these variables by accelerating the damping two multiplication to improve image quality. We should consider the actual processing, preventing that the concave lens center was too thin, convex lens edge was thin and so on. In the automatic optimization of the structural constraints, boundary conditions were added, so that the lens center thickness was greater than 0.35 mm and the edge thickness was greater than 0.3 mm. The design in this article consisted of five aspherical lenses and a filter. The F-number of the lens is 2.2, the half field angle is 35 degrees, the effective focal length is 3.6, and the total length of the lens is 3.6 mm. The MTF at central field of view is greater than 0.6, at the high frequency is greater than 0.2. In the 0.8 field of view the middle frequency is greater than 0.4. In a word, the lens can meet the requirement of the high imaging quality camera. This mobile phone camera’s overall length is shorter than the common design. It can be used to design ultra-thin mobile phone; MTF value is high and well match with the 13 mega-pixel chip. The F number is small under low illumination conditions. Without the help of external light, could also has good imaging quality.

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  • 图 1  初始结构

    Figure 1.  Initial structure

    下载: 全尺寸图片 幻灯片

    图 2  初始结构的MTF曲线

    Figure 2.  MTF curve of initial structure

    下载: 全尺寸图片 幻灯片

    图 3  优化后的镜头结构

    Figure 3.  Optimized lens structure

    下载: 全尺寸图片 幻灯片

    图 4  优化后各视场MTF曲线

    Figure 4.  MTF curve of each field of view after optimization

    下载: 全尺寸图片 幻灯片

    图 5  优化后的场曲、畸变图

    Figure 5.  Field curvature and distortion plots after optimization

    下载: 全尺寸图片 幻灯片

    图 6  点列图

    Figure 6.  Spot diagram

    下载: 全尺寸图片 幻灯片

    图 7  相对照度曲线

    Figure 7.  Relative illuminance curve

    下载: 全尺寸图片 幻灯片

    图 8  RMS波前误差

    Figure 8.  RMS wavefront error

    下载: 全尺寸图片 幻灯片

    表 1  设计参数

    Table 1.  Design parameters

    Parameter Value
    Angle of view/(°) 71
    Distortion/% 2.5
    F-number 2.2
    Effective focal length/mm 3.58
    Back focal length/mm 0.45
    Relative illumination/% 50
    Overall length/mm 3.6
    Total pixels/mega-pixels 13
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    • 参考文献(12)
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    CODE V 10. 5, Optical Research Associates, East Foothill Boulevard, Pasadena, CA 91107.

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出版历程
收稿日期:  2017-10-28
修回日期:  2017-11-25
刊出日期:  2018-02-22

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