摘要
为克服传统视网膜投影显示技术存在的出瞳小、无法获得单眼调焦深度信息的局限,提出了一种基于麦克斯韦视图的分区时分复用3D视网膜投影显示技术。根据人眼视觉特性将虚拟场景分为边缘背景区域和中心注视区域:对中心注视区域采用时分复用的3D视网膜投影显示技术,实现了具有单眼调焦深度信息的真3D显示,同时增大了出瞳面积。对边缘背景区域采用短焦目镜和液晶显示器件实现了大视角显示。利用半透半反镜实现了边缘和中心区域的图像融合。构建了一套基于LED阵列、数字微镜器件、液晶显示器等光电器件的实验显示系统,实现了大出瞳、宽视角的真3D视网膜投影显示,验证了技术方案的可行性。
Recently,near-eye display technology has developed rapidly.Augmented reality,virtual reality,and other related products have begun to enter the field of mass consumption,bringing people a novel visual experience.However,while enjoying the visual feast,users have to endure traditional near-eye display technology defects,such as small angle of view,limited exit pupil area and resolution,easy to cause dizziness,and visual fatigue.To solve the above problems,researchers began to explore the application of holographic display,light field display,and retinal projection display technology to improve the visual effect of near-eye display and enhance the comfort of use.Among them,retinal projection display technology has attracted much attention because of its advantages of a simple solution,compact structure and easy integration.Retina projection display technology is based on the principle the of Maxwellian view.The human eye′retina is used as a display screen,and a clear image is projected directly on it to avoid image blur caused by eye focusing.Using this method can effectively alleviate the problem of visual fatigue caused by the conflict of vergence and accommodation,but it has the disadvantages of small exit pupil diameter and inability to provide correct depth information.To overcome the above shortcomings,a partition and time-division multiplexing 3D retinal projection display technology using the principle of Maxwellian view is proposed.According to the human visual characteristics,the virtual scene is divided into an edge background area and a central gaze area.Time-division multiplexing 3D retinal projection display technology is used for the central gaze area to display the image group on the DMD at high frequency.At the same time,the point light sources in the LED array are controlled to illuminate synchronously according to the same time sequence,and the image group refreshed by the DMD are views corresponding to each viewing angle.These views are matched with the viewing angles corresponding to the illu
作者
韦子超
楼益民(指导)
胡娟梅
吴锋民
WEI Zichao;LOU Yimin;HU Juanmei;WU Fengmin(Key Laboratory of Optical Field Manipulation of Zhejiang Province,Department of Physics,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2022年第5期279-288,共10页
Acta Photonica Sinica
基金
浙江省自然科学基金(Nos.LTY22F020002,LY19F050018)
浙江理工大学科研启动项目(No.17062061-Y)。
关键词
视网膜投影
3D显示
麦克斯韦视图
时分复用
Retinal projection
3D display
Maxwellian view
Time division multiplexing
