光纤扫描式李萨如轨迹近眼显示系统设计  

Design of fiber scanning Lissajous trajectory near-eye display system

作　　者：吴彤 杨翔宇[1] 邹谨聪 刘友文 王玲[3] 王吉明 路元刚[1] 赫崇君 WU Tong;YANG Xiangyu;ZOU Jincong;LIU Youwen;WANG Ling;WANG Jiming;LU Yuangang;HE Chongjun(Key Laboratory of Space Photoelectric Detection and Perception,Ministry of Industry and Information Technology,College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;College of Physics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;School of Automation,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]南京航空航天大学航天学院空间光电探测与感知工业和信息化部重点实验室,江苏南京211106 [2]南京航空航天大学物理学院,江苏南京211106 [3]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《光学精密工程》2024年第9期1273-1282,共10页Optics and Precision Engineering

基　　金：国家自然科学基金资助项目(No.62175106,No.62105146)。

摘　　要：为了进一步小型化头戴式显示装置(Head-worn Display,HWD),提出一种基于非对称光纤悬臂梁(Asymmetrical Fiber Cantilever,AFC)的李萨如轨迹扫描近眼显示系统,以及李萨如轨迹上的像素划分准则。研究了该系统的扫描轨迹、图像重建能力、显示分辨率和显示帧速率的影响因素。根据高分辨率、高帧速率指标设计了正交谐振频率组成,确定了非对称光纤悬臂梁的结构参数。研制的显示单元实物直径为2 mm,长度为19 mm。谐振频率下的分辨率为160×120 pixel,帧速率为10 Hz,图像重建误差率为0.002%,最高分辨率能够达到290×220 pixel,最高帧速率为95 Hz。基于显示单元实物搭建了光纤扫描式近眼显示系统,使用相机模拟人眼观察记录了该显示系统的实验结果,验证了基于非对称光纤悬臂梁的HWD显示性能及其未来应用潜力。To further reduce the size of head-worn displays(HWDs),a near-eye display system utilizing an asymmetric fiber cantilever has been developed,alongside a specific pixel division rule.This study ex⁃plores the factors affecting the scanning trajectory,image reconstruction capabilities,display resolution,and frame rate of the system.The resonant frequencies in orthogonal directions are tailored for enhanced definition and faster frame rates,with calculated structural parameters for the asymmetric fiber cantilever.The display unit measures 2 mm in diameter and 19 mm in length,offering a resolution of 160×120 pixels at a 10 Hz frame rate,with an image reconstruction error rate of 0.002%.It can potentially reach a maxi⁃mum resolution of 290×220 pixels and a frame rate of 95 Hz.A fiber-scanning near-eye display system has been constructed,employing a camera to document the experimental outcomes.These results confirm the display's efficacy and the promising future applications of asymmetric fiber cantilevers in HWDs.

关 键 词：近眼显示 头戴式显示装置 李萨如轨迹 非对称光纤悬臂梁 像素划分 

分 类 号：TN27[电子电信—物理电子学]