.png){kind=icon}
返回
Waveguide-based augmented reality displays: perspectives and challenges
.png){kind=icon}
OA
AI
DOI：10.1186/s43593-023-00057-z.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Augmented reality (AR) displays, as the next generation platform for spatial computing and digital twins, enable users to view digital images superimposed on real-world environment, fostering a deeper level of human-digital interactions. However, as a critical element in an AR system, optical combiners face unprecedented challenges to match the exceptional performance requirements of human vision system while keeping the headset ultracompact and lightweight. After decades of extensive device and material research efforts, and heavy investment in manufacturing technologies, several promising waveguide combiners have been developed. In this review paper, we focus on the perspectives and challenges of optical waveguide combiners for AR displays. We will begin by introducing the basic device structures and operation principles of different AR architectures, and then delve into different waveguide combiners, including geometric and diffractive waveguide combiners. Some commonly used in-couplers and out-couplers, such as prisms, mirrors, surface relief gratings, volume holographic gratings, polarization volume gratings, and metasurface-based couplers, will be discussed, and their properties analyzed in detail. Additionally, we will explore recent advances in waveguide combiner design and modeling, such as exit pupil expansion, wide field of view, geometric architectures of waveguide couplers, full-color propagation, and brightness and color uniformity optimization. Finally, we will discuss the bottlenecks and future development trends in waveguide combiner technologies. The objective of this review is to provide a comprehensive overview of the current state of waveguide combiner technologies, analyze their pros and cons, and then present the future challenges of AR displays.
Keyword:
Augmented reality
Waveguide display
Surface relief gratings
Volume holographic grating
Polarization volume gratings
Metasurface devices
期刊
IF:
32.1
论文数:
138
被引数:
1.8K
机构
引用论文
Metagrating meets the geometry-based efficiency limit for AR waveguide in-couplers.png)
OPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏Replicated slanted gratings with a high refractive index material for in and outcoupling of lightOPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAI分享收藏Aberration-free pupil steerable Maxwellian display for augmented reality with cholesteric liquid crystal holographic lensesOPTICS LETTERS
OPTICS LETTERSIF3.3
PREAI
分享收藏Multiple gratings simultaneously formed in holographic polymer-dispersed liquid-crystal displays
PREAI
分享收藏
查看更多内容