为了满足市场对低成本、高变焦比光学变焦手机摄像镜头的需求，采用三运动组份变焦核结构型式，选用优质光学塑料非球面透镜与普通光学玻璃球面透镜混合结构，利用计算机辅助设计软件Zemax优化镜头系统，设计了一种4.6倍光学变焦、500万像素(5×106 pixel)的手机摄像镜头。系统全视场调制传递函数（MTF）值在空间频率20 lp/mm处大于0.8，广角端及摄远端的MTF值在1/2奈奎斯特频率处大部分视场大于0.4 lp/mm；相对畸变均小于3.2％；全视场广角端处的相对照度大于67％，摄远端处的相对照度大于89％，并且变焦曲线平滑。该镜头系统具有分辨率高、制造成本低、变焦比高的优点。

In order to meet the market demand of optical zoom camera for mobile phone with low cost and high zoom ratio, the zoom system with three movement groups and the optical plastic-glass composite structure are used to design a camera lens for mobile phone with 4.6 times optical zoom, and 5 megapixels (5×106 pixel) resolution. The zoom system is optimized with computer-aided design software Zemax. In the whole field of view (FOV), the modulation transfer functions (MTFs) at 20 lp/mm are higher than 0.8, and the MTFs at half Nyquist frequency of CMOS in most part of the FOV are greater than 0.4 lp/mm at the wide-angle end (short focus) and the telephoto end (long focus). The relative distortion is less than 3.2%. The relative illumination at the wide-angle end is greater than 67%, and it is higher than 89% at the telephoto end. The moving curves change smoothly. The camera system has the advantages of high resolution, low manufacturing cost, and high zoom ratio.