
浏览全部资源
扫码关注微信
浙江大学 光电科学与工程学院,浙江 杭州 310027
[ "李子寅(1997—),女,河北邯郸人,博士研究生,2019年于四川大学获得学士学位,主要从事裸眼三维显示方面的研究。E-mail:li.ziyin@zju.edu.cn" ]
[ "李海峰(1965—),男,浙江宁波人,博士,教授,2002年于浙江大学获得博士学位,主要从事三维显示技术、AR/VR显示、投影显示、光电成像检测等方面的研究。E-mail:lihaifeng@zju.edu.cn" ]
收稿日期:2022-01-28,
修回日期:2022-02-18,
纸质出版日期:2022-05-05
移动端阅览
李子寅, 李海峰, 刘旭. 基于多指向型背光源的三维显示系统[J]. 液晶与显示, 2022,37(5):598-604.
Zi-yin LI, Hai-feng LI, Xu LIU. Three-dimensional display with a multi-directional backlight[J]. Chinese journal of liquid crystals and displays, 2022, 37(5): 598-604.
李子寅, 李海峰, 刘旭. 基于多指向型背光源的三维显示系统[J]. 液晶与显示, 2022,37(5):598-604. DOI: 10.37188/CJLCD.2022-0031.
Zi-yin LI, Hai-feng LI, Xu LIU. Three-dimensional display with a multi-directional backlight[J]. Chinese journal of liquid crystals and displays, 2022, 37(5): 598-604. DOI: 10.37188/CJLCD.2022-0031.
为了实现低串扰、全分辨、多视点的三维显示效果,搭建了多指向型背光源的三维显示系统。本系统由人眼追踪模块获取双目位置并反馈到多指向型背光源和液晶显示屏,多指向型背光源和液晶显示屏协同时序产生快速切换的左右眼视差图像。由于人眼的视觉暂留效应,观看者可感知到三维图像。多指向型背光源主要由一列柱面光源和体全息光学器件实现,不同柱面光源经体全息光学器件将产生不同方向的衍射光束。为了改善本系统显示不均匀现象,提出了双LED式和扩散屏式两种方法。实验结果表明:本系统可提供全分辨的三维图像,且均匀度提高至80%,平均串扰值低至2.75%,实现了25个显示视点,满足了三维显示对串扰、分辨率、均匀度等方面的要求,观看者的视觉体验大幅提升。
To realize three-dimensional(3D) images with low crosstalk, full resolution, and multi-view, a 3D display based on a multi-directional backlight is proposed. An eye-tracker in the system is used to acquire the position of human eyes and feedback to multi-directional backlight and the liquid crystal display (LCD) panel. Directional parallax images are time-sequentially provided to each eye by simultaneously working of multi-directional backlight and LCD screen. Viewers can achieve 3D perception based on the persistence of vision. Multi-directional backlight is mainly realized by a series of cylindrical waves and a holographic optical element (HOE). Different cylindrical waves produce diffracted beams in different directions through HOE. Double-LED type and diffuser type are proposed to improve the uniformity of the proposed system. Experimental results indicate that this system can provide full resolution 3D images in 25 viewing zones, and the uniformity is improved to 80%, average crosstalk is as low as 2.75%, which satisfy the demands for crosstalk, resolution, uniformity in the 3D display system, and the visual experience of viewers is greatly improved.
万文强 . 基于衍射光学的裸眼3D显示研究 [D]. 苏州 : 苏州大学 , 2018 .
WAN W Q . Glasses-free 3D displays based on diffraction optics [D]. Suzhou : Soochow University , 2018 . (in Chinese)
FATTAL D , PENG Z , TRAN T , et al . A multi-directional backlight for a wide-angle, glasses-free three-dimensional display [J]. Nature , 2013 , 495 ( 7441 ): 348 - 351 . doi: 10.1038/nature11972 http://dx.doi.org/10.1038/nature11972
CHEN C H , HUANG Y P , CHUANG S C , et al . Liquid crystal panel for high efficiency barrier type autostereoscopic three-dimensional displays [J]. Applied Optics , 2009 , 48 ( 18 ): 3446 - 3454 . doi: 10.1364/ao.48.003446 http://dx.doi.org/10.1364/ao.48.003446
IM H J , JUNG S M , LEE B J , et al . Mobile 3D displays based on a LTPS 2. 4" VGA LCD panel attached with lenticular lens sheets [J]. SID Symposium Digest of Technical Papers , 2008 , 39 ( 1 ): 256 - 259 . doi: 10.1889/1.3069639 http://dx.doi.org/10.1889/1.3069639
王琼华 , 邓欢 . 集成成像3D拍摄与显示方法 [J]. 液晶与显示 , 2014 , 29 ( 2 ): 153 - 158 . doi: 10.3788/yjyxs20142902.0153 http://dx.doi.org/10.3788/yjyxs20142902.0153
WANG Q H , DENG H . 3D pickup and display method of integral imaging [J]. Chinese Journal of Liquid Crystals and Displays , 2014 , 29 ( 2 ): 153 - 158 . (in Chinese) . doi: 10.3788/yjyxs20142902.0153 http://dx.doi.org/10.3788/yjyxs20142902.0153
HWANG Y S , BRUDER F K , FÄCKE T , et al . Time-sequential autostereoscopic 3-D display with a novel directional backlight system based on volume-holographic optical elements [J]. Optics Express , 2014 , 22 ( 8 ): 9820 - 9838 . doi: 10.1364/oe.22.009820 http://dx.doi.org/10.1364/oe.22.009820
FENG J L , WANG Y J , LIU S Y , et al . Three-dimensional display with directional beam splitter array [J]. Optics Express , 2017 , 25 ( 2 ): 1564 - 1572 . doi: 10.1364/oe.25.001564 http://dx.doi.org/10.1364/oe.25.001564
YEOM J , SON Y , CHOI K S . Pre-compensation method for optimizing recording process of holographic optical element lenses with spherical wave reconstruction [J]. Optics Express , 2020 , 28 ( 22 ): 33318 - 33333 . doi: 10.1364/OE.405408 http://dx.doi.org/10.1364/OE.405408
金闻嘉 . 增强现实头戴显示系统中渐变体全息光栅波导器件研究 [D]. 杭州 : 浙江大学 , 2020 .
JIN W J . The research of space variant volume holographic grating waveguide coupler in augmented reality head mounted display system [D]. Hangzhou : Zhejiang University , 2020 . (in Chinese)
KREBS P , LIANG H W , FAN H , et al . Homogeneous free-form directional backlight for 3D display [J]. Optics Communications , 2017 , 397 : 112 - 117 . doi: 10.1016/j.optcom.2017.04.002 http://dx.doi.org/10.1016/j.optcom.2017.04.002
WANG P C , HWANG S L , HUANG H Y , et al . System cross-talk and three-dimensional cue issues in autostereoscopic displays [J]. Journal of Electronic Imaging , 2013 , 22 ( 1 ): 013032 . doi: 10.1117/1.jei.22.1.013032 http://dx.doi.org/10.1117/1.jei.22.1.013032
KOGELNIK H . Coupled wave theory for thick hologram gratings [J]. The Bell System Technical Journal , 1969 , 48 ( 9 ): 2909 - 2947 . doi: 10.1002/j.1538-7305.1969.tb01198.x http://dx.doi.org/10.1002/j.1538-7305.1969.tb01198.x
0
浏览量
920
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621