头盔显示器中折射/衍射塑料光学系统设计  

Design of Refractive/Diffractive Plastic Optical System in Head Mounted Display

作　　者：吴海清[1,2] 王学进[3] 孙强[1] 王健[1] 宋贵才[2] 杨新军[4] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,长春130033 [2]长春理工大学研究生部,长春130022 [3]第二炮兵工程设计研究所,北京100011 [4]安徽华东光电技术研究所,芜湖241002

出　　处：《光子学报》2009年第9期2243-2246,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(60507003);中国科学院国防科技创新基金;吉林省科技发展计划杰出青年项目支持;国防863计划(2006AA703405G)资助

摘　　要：研究了塑料透镜在头盔系统中的应用,设计了全塑料(聚甲基丙烯酸甲脂-PMMA)头盔光学系统.引入衍射面,利用其负色散性和波面任意整形特性消除系统色差及改善波前像差.图像源发出的光束在分束器附近成中间像,可增大系统视场;出瞳在中继透镜组中间成像,可减小系统口径,增大出瞳直径.该系统镜头部分重量仅为6 g,目视系统中需重点校正的像散和垂轴色差的最大值分别为0.44 mm和20μm,最大畸变为2.5%;系统最小角分辨率为0.9 mrad,视场为40°(H)×30°(V).The properties of plastic elements applied in head mounted display （HMD） were studied and a HMD optical system made from Polymethyl methacrylate （PMMA） was presented. A diffractive surface is introduced into the system, so the chromatic aberration and wavefront aberration of the optical system can be well corrected by virtue of the negative dispersion and arbitrary phase modulation properties of the binary element. The image source forms an intermediate image near the beam--splitter to enlarge the field of view;the exit pupil forms an intermediate image between the front and rear elements of the relay system to reduce the diameter of the optical elements and enlarge the diameter of the exit pupil. The total weight of the optical system is just 6g, the astigmatic and lateral color parameters are 0. 44 mm and 20 μm respectively,and the distortion is less than 2.5% ;The minimum angular resolution is 0.9 mrad,and the field of view is 4 0 ° （ horizonta 1 ） x3 0 ° （vertical）.

关 键 词：塑料透镜 头盔显示器 光学设计 二元光学 

分 类 号：O439[机械工程—光学工程] TH74[理学—光学]