微投影广角镜头设计  

Design of mini-projection wide-angle lens

作　　者：居荣兵 康廉洁 韩敏[1] 刘言[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212000

出　　处：《应用光学》2016年第4期527-531,共5页Journal of Applied Optics

基　　金：国家自然科学青年基金(11204107)

摘　　要：为了满足国内外视场投影仪微型轻量化的趋势,设计一款适用于德州仪器推出的1.19cm(0.47英寸)、1080pix数字微反射镜片的微型广角投影镜头。镜头由7片玻璃(均为国内常见玻璃)和2片塑料(4面非球面)透镜组成,结构简单,易加工。透射比0.66:1,即在600mm处投影出111.76cm(44英寸)的画面,镜头有效焦距6.45mm,F#:2.1,全视场86°,系统总长46mm,最大口径22mm,在空间极限频率93lp/mm处0.8视场以内传递函数值都超过0.62,边缘视场的传递函数值超过0.43,全视场畸变小于等于2%,垂直色差小于等于0.18μm。In order to meet the requirement of the miniaturization and light weight for field projector both at home and abroad,we designed a short focal digital projection lens for the 1.19cm（0.47inch）,1080 pixel digital micro-mirror device（DMD）chip from TI.It is composed of 7glass lenses（all common glass）and 2plastic lenses（4aspheric surface）with simple structure,and is easy to process.The projection ratio is 0.66：1and it can project a 111.76cm（44inch）picture at the distance of 600 mm.The effect focal lenth is 6.4mm,the F-number is：F/2.1,the full field of view（FOV）is 86°,the total length is 46 mm,the full aperture is 22 mm,the modulation transfer function（MTF）is more than 0.62 at the spatial frequency of 93lp/mm within 0.8FOV,the MTF of 1field is 0.43,the distorition of the full FOV is less than 2%,and the vertical chromatic aberration is less than 0.18μm.

关 键 词：微投影 广角镜头 光学设计 大视场 

分 类 号：TN202[电子电信—物理电子学] TH741.5[机械工程—光学工程]