Choi Myeong-Ho, Ju Yeon-Gyeong, Park Jae-Hyeung
Opt Express. 2020 Jan 6;28(1):533-547. doi: 10.1364/OE.381277.
Holographic near-eye displays present true three-dimensional images with full monocular depth cues. In this paper, we propose a technique to expand the eyebox of the holographic near-eye displays. The base eyebox of the holographic near-eye displays is determined by the space bandwidth product of a spatial light modulator. The proposed technique replicates and stitches the base eyebox by the combined use of a holographic optical element and high order diffractions of the spatial light modulator, achieving horizontally and vertically expanded eyebox. An angular spectrum wrapping technique is also applied to alleviate image distortions observed at the boundaries between the replicated base eyeboxes.
全息近眼显示器呈现具有完整单眼深度线索的真三维图像。在本文中，我们提出了一种扩展全息近眼显示器视场的技术。全息近眼显示器的基本视场由空间光调制器的空间带宽积决定。所提出的技术通过结合使用全息光学元件和空间光调制器的高阶衍射来复制和拼接基本视场，实现水平和垂直方向上扩展的视场。还应用了角谱包裹技术来减轻在复制的基本视场之间的边界处观察到的图像失真。
