利用ZEMAX 软件设计一款500 万像素的手机镜头。该镜头由3 片塑料非球面镜片组成。镜头的光圈值F为2.8，全视场角64°。采用Omnivision 公司OV5645 型号的CMOS 作为图像传感器，像素尺寸大小为1.4 μm×1.4μm，截止频率为358 lp/mm。最终设计结果，镜头光学总长度为4.163 mm，1/2 截止频率处的全视场MTF 大于0.3，相对照度大于55%，畸变小于1%，场曲小于0.1 mm，可以获得优质的成像效果.

A 5 mega-pixel lens system is designed with ZEMAX. The mobile lens is composed of 3 plastic aspheric lenses. The F-number is 2.8 and FOV is 64°.The sensor OV5645 has 5 mega-pixel which is made by Omnivision, whose pixel size is 1.4 μm×1.4 μm, so the limiting resolution is 358 lp/mm. The final design result shows the optical total length is 4.163 mm, the MTF value is more than 0.3 in full fields of view at 1/2 limiting resolution, the relative illumination is more than 55%, the distortion is less than 1%, and the field curvature is less than 0.1 mm. It possesses an excellent imaging performance.