Analysis of displayable depth range for retinal projection type super multi-view 3D head-mounted display using the time division projection optical system
Analysis of displayable depth range for retinal projection type super multi-view 3D head-mounted display using the time division projection optical system
复制标题
时分投影光学系统视网膜投影式超多视点3D头戴式显示器可显示深度范围分析
DOI：
10.1117/12.2506983
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Takahashi Hideya
中科院分区：
文献类型：
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作者：
Maeda Hiroaki;Kohno Junya;Yoshimoto Kayo;Takahashi Hideya
我们先前已经提出了使用时分投影光学系统的视网膜投影型超级多视图头戴式显示器（HMD）。通过使用超级多视图HMD，可以向观看者提供自然地引起人眼调节的三维（3D）图像。为了实现超多视图方法，需要在视网膜上同时投影多个视差图像。然而，当每个视差图像之间的视差大并且视网膜上的每个视差图像的对应像素彼此不重叠时，视网膜图像被观察为多个投影图像，因此不能诱导调节。为了估计超多视角头盔显示器的3D图像显示范围，利用Gullstrand的示意性人眼模型，通过对视网膜图像光强分布的分析，揭示了视差图像个数与3D图像显示范围之间的关系。为了验证3D图像的可显示范围，我们构建了原型头戴式显示器，它将五个视差图像投射到视网膜上。我们证实，原型头戴式显示器的三维图像的显示范围是从900毫米到2000毫米的人眼。通过明确视差图像的数量与3D图像的可显示范围之间的关系，可以自由地设计视网膜投影型超级多视点HMD的3D图像的显示范围。
We have previously proposed the retinal projection type super multi-view head-mounted display (HMD) using the time division projection optical system. By using the super multi-view HMD, it is possible to provide the viewer with the threedimensional (3D) image that induces the accommodation of a human eye naturally. In order to realize the super multi-view method, it is necessary to simultaneously project multiple parallax images on the retina. However, when the parallax between each parallax image is large and the corresponding pixels of each parallax image on the retina do not overlap each other, the retinal image is observed as multiple projection images, therefore the accommodation cannot be induced. In this paper, to estimate the displayable range of 3D image of the proposed super multi-view HMD, we revealed the relationship between the number of parallax images and the displayable range of 3D image by using Gullstrand’s schematic eye model and the analysis of the light intensity distributions of retinal images. In order to verify the displayable range of 3D image, we constructed the prototype HMD which projected five parallax images on the retina. We confirmed that the displayable range of 3D image of the prototype HMD is from 900 mm to 2000 mm in front of human eye. By clarifying the relationship between the number of parallax images and the displayable range of 3D image, it is possible to freely design the display range of 3D image of the retinal projection type super multi-view HMD.