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1300万像素折衍混合式手机镜头设计
引用本文:于艇,迟名辰,李艳红,罗春华.1300万像素折衍混合式手机镜头设计[J].长春理工大学学报,2015(6):5-11.
作者姓名:于艇  迟名辰  李艳红  罗春华
作者单位:长春理工大学 光电工程学院,长春,130022
摘    要:设计了两款高像素的折衍混合式手机镜头。两款镜头F数均为2.2,都将第一片透镜的后表面作为衍射面,第一种结构采用正-负-正的三片式,光阑位于第一片透镜和第二片透镜之间,全视场60°,焦距为5mm,系统总长5.8mm,优化后在223lp/mm处所有视场MTF值均大于0.4,在446lp/mm处所有视场MTF值均大于0.19,相对畸变小于2%,第二种结构为四片式,光阑前置,全视场70°,焦距4.2mm,系统总长6.7mm,优化后在223lp/mm处0.7视场内MTF值均大于0.36,在446lp/mm处0.7视场内MTF值接近于0.2,相对畸变小于1%,三片式镜头系统总长小,MTF曲线也更高,但四片式镜头有较大的视场角且场曲畸变更小,两者各有优势。

关 键 词:光学设计  手机镜头  衍射光学元件  1300万像素

The Design of Hybrid Diffraction-refraction 13mega-pixel Mobile Phone Lens
Abstract:This paper designs two refraction and diffraction mixed lens with high pixel.The F of two mobile phone lens is 2.2,The back surface of the first lens is used as the diffraction surface.One lens use positive-negative-positive type 3 pieces structure, the stop is between the first and second lens, Full Field is 60 degree, focal length is 5mm.total length is 5.8mm,After optimization,MTF value of all the fields >0.4 at 233lp/mm,and MTF value of all the fields>0.19 at 446lp/mm, the relative distortion less than 2%, The other one use 4 pieces structure, Front stop, Full Field is 70 degree,focal length is 4.2mm.total length is 6.7mm,After optimization,MTF value of 0.7 fields >0.36 at 233lp/mm, and MTF value of 0.7 fields close to 0.2 at 446lp/mm, the relative distortion less than 1%, Three piece lens system small length,MTF is also higher,but four piece lens have large field of view angle and curvature of field dis-tortion is small. Both of them have their own advantages.
Keywords:optical design  mobile phone lens  diffraction optical element  13 mega-pixel
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