Compact Stereo Waveguide Display Based on a Unidirectional Polarization-Multiplexed Metagrating In-Coupler,ACS Photonics

当前位置： X-MOL 学术 › ACS Photonics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Compact Stereo Waveguide Display Based on a Unidirectional Polarization-Multiplexed Metagrating In-Coupler
ACS Photonics ( IF 6.5 ) Pub Date : 2021-03-22 , DOI: 10.1021/acsphotonics.0c01885
Zeyang Liu _{1,

2} , Cheng Zhang ₃ , Wenqi Zhu _{4,

5} , Zhanhua Huang ₂ , Henri J. Lezec ₄ , Amit Agrawal _{4,

5} , L. Jay Guo ₁

Affiliation

Three-dimensional (3D) vision in augmented reality (AR) displays can enable highly immersive and realistic viewer experience, hence, attracts much attention. Most current approaches create 3D vision by projecting stereoscopic images to different eyes using two separate projection systems, which are inevitably bulky for wearable devices. Here, we propose a compact stereo waveguide AR display system using a single piece of thin flat glass integrated with a polarization-multiplexed metagrating in-coupler and two diffractive grating out-couplers. Incident light of opposite circular polarization states carrying stereoscopic images are first steered by the metagrating in-coupler to opposite propagation directions in the flat glass waveguide, subsequently extracted by the diffractive grating out-couplers, and finally received by different eyes, forming 3D stereo vision. Experimentally, we fabricated a display prototype and demonstrated independent projection of two polarization-multiplexed stereoscopic images. This work paves a novel path toward the implementation of high-performance stereo displays with compact size, lightweight, and multicolor compatibility.

中文翻译：

基于单向极化-多路复用集成耦合器的紧凑型立体声波导显示

增强现实（AR）显示器中的三维（3D）视觉可以实现高度身临其境的逼真的观看者体验，因此吸引了很多关注。当前的大多数方法通过使用两个单独的投影系统将立体图像投影到不同的眼睛来创建3D视觉，这对于可穿戴设备而言不可避免地体积庞大。在这里，我们提出了一种紧凑的立体声波导AR显示系统，该系统使用一块薄的平板玻璃与偏振复用的偏向入射耦合器和两个衍射光栅向外耦合器集成在一起。带有立体图像的相反圆偏振态的入射光首先由入射的入射耦合器在平板玻璃波导中导向到相反的传播方向，然后由衍射光栅输出耦合器提取，最后被不同的眼睛接收，形成3D立体视觉。通过实验，我们制造了一个显示器原型，并演示了两个偏振复用立体图像的独立投影。这项工作为实现具有紧凑尺寸，轻巧和多色兼容性的高性能立体声显示器铺平了一条新的道路。

更新日期：2021-04-21

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南