Polarization enlargement of FOV in Super Multi-view display based on near-eye timing-apertures
Polarization enlargement of FOV in Super Multi-view display based on near-eye timing-apertures
复制标题
基于近眼定时孔径的超级多视点显示视场偏振放大
DOI：
10.1364/oe.446819
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发表时间：
2022-01-17
期刊：
影响因子：
3.8
通讯作者：
Teng, Dongdong
中科院分区：
文献类型：
--
作者：
Liu, Lilin;Ye, Qiu;Teng, Dongdong
通过将条形定时孔径附接到观看者的每只眼睛，可以通过不同的定时孔径将多于一个的透视图顺序地引导到任一只眼睛，从而实现无VAC（无聚散调节冲突）SMV（超级多视图）3D（三维）显示。为了克服由于定时孔径沿着排列方向尺寸较小而导致的视场限制问题，本文设计了新型的定时孔径偏振结构。相应地，所提出的SMV显示系统的显示屏沿着定时孔径的布置方向被划分为M > 1个子屏，相邻的子屏发射相互正交偏振的光。在每个时间段的时间点，打开沿排列方向沿着与M个子屏幕一一对应的一组M个定时孔径，以创建M重FOV，该组中的每个偏振定时孔径允许来自相应子屏幕的光通过，并阻挡来自与相应子屏幕相邻的子屏幕的光。在每个时间段的2T > 1个时间点，依次打开2T组定时孔径，以向每只眼睛呈现所显示场景的一个以上二维图像，以实现基于视觉持久性的SMV显示。M代表FOV放大倍数，T代表每只眼睛的二维图像编号。作为证明，用目前可用的M = 3的定时孔径阵列实验实现了41度的3倍FOV，伴随着8.34 mm的有效无噪声区域（ENFR）。此外，描述了通过较大的M从根本上释放FOV的前景，讨论了定时孔径条带方向上的屏外模糊沿着和极限ENFR问题。(C)2022 Optica出版集团根据Optica开放获取出版协议的条款
With strip-type timing-apertures attached to each eye of a viewer, more than one perspective views can be guided to either eye sequentially through different timing-apertures, thus implementing VAC-free (vergence-accommodation conflict-free) SMV (Super Multi-view) 3D (three-dimensional) display. To overcome the FOV (field of view) limitation problem due to small size of the timing-apertures along their arrangement direction, novel polarization architectures are designed to the timing-apertures in this paper. Correspondingly, the display screen of the proposed SMV display system is divided into M > 1 sub-screens along the arrangement direction of the timing-apertures, with adjacent sub-screens emitting light of mutually orthogonal polarization. At a time-point of each time period, a group of M timing-apertures, which correspond to the M sub-screens in a one-by-one manner along the arrangement direction, are turned on for creating an M-fold FOV, with each polarized timing-aperture of the group allowing light from the corresponding sub-screen passing through and blocking light from sub-screen(s) adjacent to the corresponding sub-screen. At 2T > 1 time-points of each time period, 2T groups of timing-apertures are turned on sequentially for presenting more than one two-dimensional images of the displayed scene to each eye, to implement SMV display based on persistence of vision. M stands for the FOV magnification number and T stands fir the two-dimensional image number for each eye. As proof, a 3-fold FOV of 41 degrees gets implemented experimentally with a currently available timing-aperture array of M = 3, accompanied by an effective noise-free region (ENFR) of 8.34 mm. Furthermore, the promising of freeing FOV from timing-aperture constraint fundamentally by larger M is described, out-of-screen blur along strip direction of the timing-apertures and the problem of limited ENFR are discussed. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement