应用光学, 2008, 29 (6): 0944, 网络出版: 2010-06-03
300万像素手机镜头设计
Design of lens for 3 mega-pixel mobile phone camera
光学设计 手机镜头 300万像素 非球面透镜 optical design lens of mobile phone 3 mega-pixel camera aspheric lens MTF MTF ZEMAX ZEMAX
摘要
设计一种300万像素的手机镜头。该镜头由3片塑料非球面透镜和1个红外滤光片组成，采用三星公司的一款300万像素0．635 cm(1／4 inch)CMOS作为该镜头的图像传感器，像素颗粒大小为1．75μm，其分辨率极限为285 lp／mm，即为奈奎斯特频率。镜头的光圈值F为2．85，视场2ω为62°。该镜头有较好的成像质量，在奈奎斯特频率1／2处绝大部分视场的MTF值大于0．5，波前均方差(RMS wavefront error)小于0．14λ(λ为波长)，最大畸变为－0．2%。
Abstract
A mobile phone lens assembly composed of 3 plastic aspheric lenses and an IR filter was designed. This lens assembly has an excellent imaging performance. Considering production and cost,the plastic lens 480R was chosen. The 1/4 inch 3 mega-pixel CMOS made by Samsung was taken as the image sensor of the lens assembly,whose pixel size was 1.75 /μm,limiting resolution was 285lp/mm,F-number was 2.85 and FOV was 62°. Its MTF in the most part of FOV at half of Nyquist frequency is higher than 0.5,RMS wavefront error is less than 0.14λ and maximum distortion is－0.2%.
刘茂超, 张雷, 刘沛沛, 邸兴, 白晋涛. 300万像素手机镜头设计[J]. 应用光学, 2008, 29(6): 0944. LIU Mao-chao, ZHANG Lei, LIU Pei-pei, DI Xing, BAI Jin-tao. Design of lens for 3 mega-pixel mobile phone camera[J]. Journal of Applied Optics, 2008, 29(6): 0944.
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