采用Q-type非球面的大孔径大像面手机镜头的设计  

Design of Large Aperture and Large Image Mobile Phone Lenses Using Q⁃Type Aspheres

作　　者：曹天皓 张继艳 林正煜 孙丽婷 秦腾 申洋羽 CAO Tianhao;ZHANG Jiyan;LIN Zhengyu;SUN Liting;QIN Teng;SHEN Yangyu(School of Opto-Electronics and Communication Engineering,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024

出　　处：《厦门理工学院学报》2024年第5期17-23,共7页Journal of Xiamen University of Technology

基　　金：国家自然科学基金项目“具有铜电极的氧化物TFT中的铜原子扩散及其抑制方法研究”(61704142);厦门市科技计划项目产学研项目“大倍率大靶面高分辨率双远心光路设计与制造中关键技术”(2023CXY0402)。

摘　　要：利用Q-type非球面优越的高阶像差校正能力,设计一款大孔径和大像面的手机镜头。该手机镜头光学系统由9片透镜组成,包含7片偶次非球面和2片Q-type非球面。镜头的F数为1.8,像高为6.82 mm,视场角为70°,有效焦距为4.77 mm,系统总长为6.86 mm。该手机镜头光学系统在奈奎斯特(Nyquist)频率为446 lp·mm^(-1)处,轴上点至0.7视场的调制传递函数(MTF)值均大于0.18;在12 Nyquist频率为223 lp·mm^(-1)处,轴上点至0.7视场的MTF值大于0.42,满足手机镜头成像要求。仿真结果表明,相较于相同设计参数和初始结构的偶次非球面,采用Q-type非球面的手机镜头成像光斑半径小25.52%,具有更佳的成像质量。公差分析结果表明,在给定的公差范围内,透镜设计满足生产要求。This paper presents a design of a large-aperture and large-image-field mobile phone lens leveraging the superior high-order aberration correction capabilities of Q-type aspheres.Its optical system is composed of seven even-order aspheres and two Q-type aspheres.The lens has an F-number of 1.8,an image height of 6.82 mm,a field of view of 70°,an effective focal length of 4.77 mm,and a total system length of 6.86 mm.The design outcomes demonstrate that at the Nyquist frequency of 446 lp·mm^(-1),the Modulation Transfer Function(MTF)values from the optical axis to the 0.7 field of view are all greater than 0.18;at the half Nyquist frequency of 223 lp·mm^(-1),the MTF values exceed 0.42,meeting the imaging requirements for mobile phone lenses.Comparison of the mobile phone lenses under the same design parameters and initial structure indicates that the lens designed with Q-type aspheres has a spot radius that is 25.52%smaller than that of the lens designed with even-order aspheres,and offers better image quality.Results of the tolerance analysis also show that design of the system meets the machining requirements.

关 键 词：手机镜头 光学设计 大孔径 大像面 Q-type非球面 

分 类 号：TB851.1[一般工业技术—摄影技术]