AMOLED头盔显示器光学系统设计及视空间评价  

Optical design for AMOLED head-mounted projective display and optical assessment in visual space

作　　者：范海英[1] 杨嘉[1] 张金凤[1] 赵云飞[1] 刘文辉[1] 

机构地区：[1]军事交通学院 基础实验中心,天津300161

出　　处：《延边大学学报（自然科学版）》2012年第4期315-319,共5页Journal of Yanbian University（Natural Science Edition）

摘　　要：基于投影式物镜,采用新型AMOLED图像源,引入折射/衍射混合结构,通过系统优化,得到一款3片投影式头盔显示器光学系统.该系统采用0.61英寸AMOLED微显示器,视场为45°,质量为1.35 g,直径为11.32 mm,分辨率满足SVGA显示模式,实现了头盔系统的超轻小设计.通过理想透镜焦距变化模拟人眼调节,对其MTF(调制传递函数)进行了精确的视空间评价,评价结果显示:对于3 mm瞳孔,该系统中心视场的MTF在0.5 cycles/arc min处为0.41,远夫于AIM(视网膜空间像调制度)曲线的值(0.23),达到了人眼的最小分辨角,满足单兵装备的使用需要。Based on projective object lens design with new type AMOI.ED image source and refractive/diffractive structure, a .3 element hybrid refractive-diffractive lens system for head-mounted display is obtained. The miniature display is a 0.61 in AMOLED, and the system is with the field of view of 45°, the weight of 1.35 g, and the diameter of 11.32 mm. This system can display SVGA mode images and realize the good performance with a super compact design. We present the performance of the system on MTF （Modulation Transfer Func tion） by changing the focal length of the image distance of the perfect lens. The results of the optical assess ment in visual space show that for a 3 mm pupil size, the MTF is 0.41 at 0.5 cycles/arc rain, matching the visual acuity of the human visual system. It is much larger than the value of AIM （Aerial Image Modulation）, so can fulfill the usability in the field of individual equipment.

关 键 词：光学系统 头盔显示器 投影物镜 OLED显示器 视空间评价 

分 类 号：TH74[机械工程—光学工程]