基于ZEMAX软件的短焦数字投影镜头的设计  

Design of short focal digital projection lens based on ZEMAX

作　　者：李维善 陈琛 张禹 刘宵婵 

机构地区：[1]秦皇岛视听机械研究所,河北秦皇岛066000

出　　处：《应用光学》2010年第5期714-717,共4页Journal of Applied Optics

摘　　要：利用ZEMAX光学软件设计了一款适用于部分2.03 cm(0.8英寸)单片DLP投影机机型的短焦(广角)数字投影镜头。该镜头结构由10片透镜组成,具有结构简单、生产成本低、易加工等特点。镜头的全视场角2w达到80,°相对孔径约为1/2.1,有效焦距约为12.7 mm,等效后截距约为37 mm,其投射比约为0.78/1,即1 m的投射距离可以投射出160.02 cm(63英寸)的画面。镜头有较好的成像质量,在分辨率极限35 lp/mm处,0.7视场以内的MTF值均大于0.35,在1/2分辨率极限处大部分视场的MTF值大于0.7,全视场畸变量的绝对值小于3%。A short focal digital projection lens for 2.03 cm DLP projectors was designed with ZEMAX.The structure is composed of ten lenses.Its production cost is low,and it is processed easily.The full FOV of the lens is 80°,the aperture is about 1/2.1, E.F.L is about 12.7 mm,B.F.L is about 37 mm,and projection ratio is about 0.78/1.Its MTF in all fields less than 28°is higher than 0.35 at the limiting spatial frequency of 35 lp/mm.MTF in the most fields at half of the limiting spatial frequency is higher than 0.7.The absolute value of the full field of view distortion of the lens is less than 3%.The image quality of the lens is very good.

关 键 词：光学设计 投影镜头 ZEMAX 分辨率 MTF 

分 类 号：TN202[电子电信—物理电子学] O439[机械工程—光学工程]