基于小发散角的投影式集成成像三维显示再现深度的拓展  

Enhancement of field depth for projection-type integral imaging three-dimensional display based on small diverging angle

作　　者：张雷[1] 杨勇[1] 赵星[1] 方志良[1] 袁小聪[1] 

机构地区：[1]南开大学现代光学研究所光学信息技术科学教育部重点实验室,天津300071

出　　处：《光学精密工程》2012年第6期1159-1165,共7页Optics and Precision Engineering

基　　金：国家973重点基础研究发展计划资助项目(No.2010CB327702);天津市应用基础及前沿技术研究计划资助项目(No.11CYBJC01400)

摘　　要：针对集成成像裸眼三维显示技术受三维再现像再现深度的限制而无法实现大规模应用的问题,提出了一种基于小发散角的投影式集成成像三维再现深度的拓展方法。该方法利用投影式集成成像显示系统和一个辅助透镜来控制元素图像阵列中各像素点的发散角度,利用小发散角度实现了再现深度的拓展。与传统的多中心平面拓展技术相比,该方法具有系统结果简单,扩展效率高,对显示器件要求较低的优点。光学实验结果显示,当元素图像阵列中各像素点的发散角为1.79°时,集成成像三维再现深度是原来的6.4倍,比传统的多中心平面扩展技术实现的4倍再现深度提升了60%,为提高集成成像三维再现像的品质提供了一种有效的解决方法。As the integral imaging threedimensional（3D） display technology is limited by the depth of field in a reconstructed image, it can not be widely used in the fields of 3D display. Therefore, this paper proposes a method to enhance the depth of field in a projectiontype integral imaging system based on the angle control. To enhance the depth of field, an additional lens is used to control the di verging angle of every pixel in the elemental image array. Contrast to the conventional method with multilayers, the proposed method has advantages in simpler systems, higher efficiency and lower re quests for display devices. Experimental results show that the depth of field is 6.4 times that of origi nal one when the diverging angle is 1.79°. And as compared to the conventional method with an engral imaging display systems.

关 键 词：三维成像 三维显示 集成成像 再现深度 发散角 

分 类 号：TN27[电子电信—物理电子学] O439[机械工程—光学工程]