Wide-viewing-angle three-dimensional display system using HOE lens array
Wide-viewing-angle three-dimensional display system using HOE lens array
复制标题
采用HOE透镜阵列的广视角三维显示系统
DOI：
10.1117/12.642186
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发表时间：
2006
影响因子：
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通讯作者：
Kenji Yamada
中科院分区：
文献类型：
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作者：
Hideya Takahashi;H. Fujinami;Kenji Yamada
积分成像存在视角受限的问题。介绍了一种利用全息光学元件（HOE）透镜阵列实现的宽视角三维显示系统。该显示系统由平面HOE透镜阵列和投影仪组成。然而，每个基本HOE透镜的轴是偏心的。由于基本HOE透镜的每个轴都是会聚的，所以平面HOE透镜阵列用作虚拟曲面透镜阵列。因此，该显示系统具有宽视角。另一方面，通常，在整体成像系统中，每个基本透镜在显示面板上具有其对应的区域。为了防止图像翻转，超过相应区域的元素图像被丢弃。因此，元素图像的数量受到限制并且视角受到限制。在所提出的系统中，由于HOE透镜阵列是平坦的，并且来自投影仪的光线是平行的，因此元素图像不会超出相应的区域，并且不会观察到翻转的图像。此外，该显示系统的配置简单。该系统的原理进行了说明，并提出了实验结果。
Integral imaging has the problem of the limitation of viewing angle. This paper describes a wide-viewing-angle 3D display system using holographic optical element (HOE) lens array. This display system consists of a flat HOE lens array and a projector. However, the axis of each elemental HOE lens is eccentric. Since every axis of the elemental HOE lens is convergent, the flat HOE lens array works as a virtual curved lens array. Thus, this display system has a wide viewing angle. On the other hand, generally, in a integral imaging system each elemental lens has its corresponding area on the display panel. To prevent the image flipping, the elemental image that exceeds the corresponding area is discarded. Therefore, the number of the elemental images is limited and the viewing angle is limited. In the proposed system, since the HOE lens array is flat and the light rays from the projector are parallel, the elemental image does not exceed the corresponding area and the flipped images are not observed. Also, the configuration of this display system is simple. The principle of the proposed system is explained and the experimental result is presented.