Curved holographic optical elements and applications for curved see-through displays
Curved holographic optical elements and applications for curved see-through displays
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曲面全息光学元件及其在曲面透视显示器中的应用
DOI：
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发表时间：
2019
影响因子：
3.7
通讯作者：
Byoungho Lee
中科院分区：
文献类型：
--
作者：
Kiseung Bang;C. Jang;Byoungho Lee
摘要 全息光学元件（HOE）因其透明且薄而被用作实现增强现实（AR）和透视显示的重要工具。此外，由于HOE通常呈薄膜形状，因此它们可以弯曲、用于涂层或附着在弯曲表面上。虽然它们可用于实现曲面 AR 显示，但曲面 HOE 的应用尚未得到充分研究。本文介绍了一种利用耦合波理论和数值射线追踪方法对弯曲HOE进行分析的方法。利用该方法，分析了表面曲率对HOE光学特性（包括像差和衍射效率）的影响。本文还提出了一种设计能够减少像差的最佳曲率的方法。弯曲 HOE 可应用于透视显示器，例如头戴式显示器 (HMD)、平视显示器 (HUD) 或透明屏幕。它们可用于扩大视场 (FOV) 并缩小外形尺寸。所提出的分析方法为设计实用的弯曲透视显示器提供了有用的指导。
ABSTRACT Holographic optical elements (HOEs) have been used as important tools for implementing augmented reality (AR) and see-through displays because they are transparent and thin. Moreover, as HOEs usually come in the shape of a thin film, they can be bent, used for coating, or attached to curved surfaces. While they can be used to implement curved AR displays, however, the applications of the curved HOE have not been sufficiently studied. In this paper, an analysis method for curved/bent HOEs using the coupled-wave theory and the numerical ray tracing method is introduced. Using this method, the influence of the surface curvature on the optical characteristics of HOEs, including the aberration and diffraction efficiency, was analyzed. Also presented herein is a method of designing the optimal curvature that can reduce the aberration. Curved HOEs can be applied to see-through displays such as head-mounted displays (HMDs), head-up displays (HUDs), or transparent screens. They can be used to expand the field of view (FOV) and to reduce the form factor. The proposed analysis method provides a useful guideline for designing practical curved see-through displays.
通过集成自由形状元件和体积全息图而具有大视场的便携式波导显示系统
影响因子：
3.8
作者：
Han, Jian;Liu, Juan;Wang, Yongtian
通讯作者：
Wang, Yongtian