Integrated metasurface-freeform system enabled multi-focal planes augmented reality display
集成无超表面自由形态系统实现了多焦平面增强现实显示
統合メタ表面フリーフォームシステムによる多焦点面拡張現実ディスプレイの実現
통합 메타표면-프리폼 시스템이 다중 초점 평면 증강 현실 디스플레이를 가능하게 했다
El sistema integrado de superficies metaformales libres permitió una visualización de realidad aumentada con múltiples planos focales
Système intégré de métasurface libre-forme permettant une visualisation en réalité augmentée multi-plans focaux
Интегрированная система безметаматериального свободного формирования позволила создать дисплей дополненной реальности с множеством фокальных плоскостей
Shifei Zhang ¹ ², Lina Gao ¹ ², Yidan Zhao ¹ ², Yongdong Wang ¹ ², Bo Wang ³, Junjie Li ³, Jiaxi Duan ¹ ² ⁴, Dewen Cheng ¹ ², Cheng-Wei Qiu ⁵, Yongtian Wang ¹ ², Tong Yang ¹ ², Lingling Huang ¹ ²
¹ School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
中国 北京 北京理工大学光电学院
² Beijing Engineering Research Center of Mixed Reality and Advanced Display, Beijing Institute of Technology, Beijing 100081, China
中国 北京 北京理工大学 北京市混合现实与新型显示工程技术研究中心
³ Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
中国 北京 中国科学院物理研究所 北京凝聚态物理国家研究中心
⁴ Beijing NED+ AR Ltd., Beijing 100081, China
中国 北京 北京耐德佳显示技术有限公司
⁵ Department of Electrical & Computer Engineering, National University of Singapore, Kent Ridge 117583, Singapore
The advent of artificial intelligence (AI) has propelled augmented reality (AR) display technology to a pivotal juncture, positioning it as a contender for the next generation of mobile intelligent terminals. However, the pursuit of advanced AR displays, particularly those capable of delivering immersive 3D experiences, is significantly hindered by the performance limitations of current hardware and the complexity of system integration.
In this study, we present an innovative multi-focal plane AR display system that integrates a non-orthogonal polarization-multiplexing metasurface, freeform optical elements, and an OLED display screen. All optical elements are integrated into a single solid-state architecture, based on a joint optimization design approach of ray tracing and diffraction theory.
The multi-focal plane AR visual effect is realized by the compact and multiplexing metasurface, which performs distinct phase functions across diverse polarization channels. Meanwhile, freeform surfaces offer ample design flexibility for the collaborative optimization of multi-focal plane imaging and the see-through systems.
Followed by a mechanical design and prototype assembly, we demonstrate the system's capabilities in real-time and multi-focal plane display. The digital images at all virtual image distances seamlessly integrate with the real environment, fully exhibiting the system's high parallelism and real-time interactivity. With the innovative design concept and joint design method, we believe that our work will spur more innovative and compact intelligent solutions for AR displays and inject new vitality into hybrid optical systems.
