基于同心透镜的超广角手机镜头设计

Design of Super-Wide-Angle Mobile Phone Camera Based on Concentric Lens

设计了一款基于同心透镜的1300万像素超广角手机镜头,得到符合工业生产要求的手机镜头参数。该镜头由4片同心透镜组成,焦距为3.3mm,F数为1.83,视场角为100°,总长5.18mm。研究结果表明,在奈奎斯特频率为223lp/mm处,0.7视场的调制传递函数(MTF)值均大于0.58,全视场的MTF值均大于0.50;在446lp/mm处,0.7视场的MTF值均大于0.30,全视场的MTF值均大于0.17。各个视场的弥散斑半径均小于2.3μm。全视场内相对照度值均大于0.65。

One kind of 13 mega-pixel and super-wide-angle mobile phone camera is designed based on concentric lens and the parameters of the mobile phone camera that meet the industrial production requirements are obtained.This camera is composed of 4 concentric lenses with a focal length of 3.3 mm,aF-number of 1.83,a field of view（FOV）of 100°,and a total length of 5.18 mm.The research results show that,at the Nyquist frequency of223 lp·mm-1,the modulation transfer function（MTF）value is larger than 0.58 in the 0.7 FOV and that in the whole FOV is larger than 0.50.At 446 lp·mm-1,the MTF value is larger than 0.30 in the 0.7 FOV and that in the whole FOV is larger than 0.17.The root-mean-square（RMS）radius of each FOV is less than 2.3μm and the relative illumination value is larger than 0.65 in the full FOV.