Opt Lett. 2022 Aug 1;47(15):3876-3879. doi: 10.1364/OL.461918.
Augmented reality (AR) near-eye displays (NEDs) are emerging as the next-generation display platform. The existing AR NED only present one single video channel at a time, same as traditional media such as TVs and smartphones. In this Letter, to the best of our knowledge, we propose for the first time a multi-channel holographic retinal projection display (RPD), which can provide multi-channel image sources simultaneously, thus greatly increasing the information content. Due to the superposition capacity of a hologram, multiple images are projected to different viewpoints simultaneously through multiple spherical wave encoding, so that the viewer can switch among playing channels very fast through eye rotation. A full-color dynamic multi-channel holographic near-eye display is demonstrated in the optical experiment. The proposed method provides a good prospect that the future AR glasses can play dozens of video channels in parallel, and the user can switch among channels freely and efficiently just through a simple eye rotation.
增强现实（AR）近眼显示器（NED）正成为下一代显示平台。现有的 AR NED 一次只能呈现一个单一的视频通道，与传统媒体（如电视和智能手机）相同。在本信中，据我们所知，我们首次提出了一种多通道全息视网膜投影显示（RPD），它可以同时提供多个通道的图像源，从而大大增加了信息内容。由于全息图的叠加能力，可以通过多个球面波编码将多个图像同时投影到不同的视点，因此，通过眼球转动，观察者可以快速切换播放通道。在光学实验中展示了全彩色动态多通道全息近眼显示器。所提出的方法提供了一个很好的前景，即未来的 AR 眼镜可以并行播放数十个视频通道，用户只需通过简单的眼球转动即可自由高效地切换通道。
