Year
Month
(Peer-Reviewed) Ultracompact and high-efficiency liquid-crystal-on-silicon light engines for augmented reality glasses
Zhenyi Luo 罗桢埸 ¹, Yuqiang Ding 丁玉强 ¹, Fenglin Peng ², Guohua Wei ², Yun Wang ², Shin-Tson Wu 吴诗聪 ¹
¹ College of Optics and Photonics, University of Central Florida, Orlando FL 32816, USA
² Meta Reality Labs, 9845 Willows Road NE, Redmond, WA 98052, USA
Opto-Electronic Advances, 2024-05-08
Abstract

In lightweight augmented reality (AR) glasses, the light engines must be very compact while keeping a high optical efficiency to enable longtime comfortable wearing and high ambient contrast ratio. “Liquid-crystal-on-silicon (LCoS) or micro-LED, who wins?” is recently a heated debate question.

Conventional LCoS system is facing tremendous challenges due to its bulky illumination systems; it often incorporates a bulky polarizing beam splitter (PBS) cube. To minimize the formfactor of an LCoS system, here we demonstrate an ultracompact illumination system consisting of an in-coupling prism, and a light guide plate with multiple parallelepiped extraction prisms.

The overall module volume including the illumination optics and an LCoS panel (4.4-μm pixel pitch and 1024x1024 resolution elements), but excluding the projection optics, is merely 0.25 cc (cm³). Yet, our system exhibits an excellent illuminance uniformity and an impressive optical efficiency (36%–41% for a polarized input light). Such an ultracompact and high-efficiency LCoS illumination system is expected to revolutionize the next-generation AR glasses.
Ultracompact and high-efficiency liquid-crystal-on-silicon light engines for augmented reality glasses_1
Ultracompact and high-efficiency liquid-crystal-on-silicon light engines for augmented reality glasses_2
Ultracompact and high-efficiency liquid-crystal-on-silicon light engines for augmented reality glasses_3
  • CW laser damage of ceramics induced by air filament
  • Chuan Guo, Kai Li, Zelin Liu, Yuyang Chen, Junyang Xu, Zhou Li, Wenda Cui, Changqing Song, Cong Wang, Xianshi Jia, Ji'an Duan, Kai Han
  • Opto-Electronic Advances
  • 2025-06-27
  • Eco-friendly quantum-dot light-emitting diode display technologies: prospects and challenges
  • Gao Peili, Li Chan, Zhou Hao, He Songhua, Yin Zhen, Ng Kar Wei, Wang Shuangpeng
  • Opto-Electronic Science
  • 2025-06-25
  • Operando monitoring of state of health for lithium battery via fiber optic ultrasound imaging system
  • Chen Geng, Wang Anqi, Zhang Yi, Zhang Fujun, Xu Dongchen, Liu Yueqi, Zhang Zhi, Yan Zhijun, Li Zhen, Li Hao, Sun Qizhen
  • Opto-Electronic Science
  • 2025-06-25
  • Observation of polaronic state assisted sub-bandgap saturable absorption
  • Li Zhou, Yiduo Wang, Jianlong Kang, Xin Li, Quan Long, Xianming Zhong, Zhihui Chen, Chuanjia Tong, Keqiang Chen, Zi-Lan Deng, Zhengwei Zhang, Chuan-Cun Shu, Yongbo Yuan, Xiang Ni, Si Xiao, Xiangping Li, Yingwei Wang, Jun He
  • Opto-Electronic Advances
  • 2025-06-19
  • Three-dimensional measurement enabled by single-layer all-in-one transmitting-receipting optical metasystem
  • Xiaoli Jing, Qiming Liao, Misheng Liang, Bo Wang, Junjie Li, Yongtian Wang, Rui You, Lingling Huang
  • Opto-Electronic Advances
  • 2025-06-19
  • Fast-zoom and high-resolution sparse compound-eye camera based on dual-end collaborative optimization
  • Yi Zheng, Hao-Ran Zhang, Xiao-Wei Li, You-Ran Zhao, Zhao-Song Li, Ye-Hao Hou, Chao Liu, Qiong-Hua Wang
  • Opto-Electronic Advances
  • 2025-06-19
  • Cascaded metasurfaces for adaptive aberration correction
  • Lei Zhang, Tie Jun Cui
  • Opto-Electronic Advances
  • 2025-05-27
  • Embedded solar adaptive optics telescope: achieving compact integration for high-efficiency solar observations
  • Naiting Gu, Hao Chen, Ao Tang, Xinlong Fan, Carlos Quintero Noda, Yawei Xiao, Libo Zhong, Xiaosong Wu, Zhenyu Zhang, Yanrong Yang, Zao Yi, Xiaohu Wu, Linhai Huang, Changhui Rao
  • Opto-Electronic Advances
  • 2025-05-27
  • Spectrally extended line field optical coherence tomography angiography
  • Si Chen, Kan Lin, Xi Chen, Yukun Wang, Chen Hsin Sun, Jia Qu, Xin Ge, Xiaokun Wang, Linbo Liu
  • Opto-Electronic Advances
  • 2025-05-27
  • Wearable photonic smart wristband for cardiorespiratory function assessment and biometric identification
  • Wenbo Li, Yukun Long, Yingyin Yan, Kun Xiao, Zhuo Wang, Di Zheng, Arnaldo Leal-Junior, Santosh Kumar, Beatriz Ortega, Carlos Marques, Xiaoli Li, Rui Min
  • Opto-Electronic Advances
  • 2025-05-27
  • Integrated photonic polarizers with 2D reduced graphene oxide
  • Junkai Hu, Jiayang Wu, Di Jin, Wenbo Liu, Yuning Zhang, Yunyi Yang, Linnan Jia, Yijun Wang, Duan Huang, Baohua Jia, David J. Moss
  • Opto-Electronic Science
  • 2025-05-22
  • Tip-enhanced Raman scattering of glucose molecules
  • Zhonglin Xie, Chao Meng, Donghua Yue, Lei Xu, Ting Mei, Wending Zhang
  • Opto-Electronic Science
  • 2025-05-22



  • Stimulated Raman scattering microscopy with phase-controlled light focusing and aberration correction for rapid and label-free, volumetric deep tissue imaging                                An inversely designed integrated spectrometer with reconfigurable performance and ultra-low power consumption
    About
    |
    Contact
    |
    Copyright © PubCard