Research Progress of Large Viewing‐Area 3D Holographic Near‐Eye Display

• Published in: Laser & photonics reviews 2024-04, Vol.18 (4), p.n/a
• Main Authors: Liu, Taijiang, Ning, Honglong, Cao, Hongkun, Luo, Dongxiang, Xu, Zhuohui, Luo, Cheng, Su, Guoping, Liu, Yuxiang, Yao, Rihui, Peng, Junbiao
• Format: Article
• Language: English
• Subjects: 3D near‐eye display; Display devices; Field of view; holographic display; Holography; Information industry; large viewing‐area; Multiplexing; Parallax; Space perception; Steering; Viewing; Wave fronts
• ISSN: 1863-8880; 1863-8899
• DOI: 10.1002/lpor.202300641

With the development of the information industry, the wearable three‐dimensional (3D) near‐eye display that can provide complete visual information has attracted increasing attention. Compared with other existing 3D display technologies, the holographic display is a promising true 3D display technology that can fully record and reproduce the original 3D scenes. The ability to present a continuous parallax and depth perception gives holography technology an unprecedented promise in the next‐generation 3D near‐eye display. However, currently available holographic near‐eye display systems can only provide a limited viewing area (including the field of view and eyebox), greatly restricting its practical application. Focusing on the development requirements of large viewing‐area 3D holographic near‐eye display, the reasons are introduced first why the viewing area of current holographic displays is limited and then the existing solutions from different aspects, including multiplexing‐based methods, steering viewing window methods, aperiodic wavefront modulation methods, and some emerging holographic display technologies are summarized. These various solutions are analyzed respectively, and their representative works are investigated. In addition, the different applications of holography in the near‐eye display system are also discussed. Finally, the advantages and disadvantages of these techniques are compared and perspectives are given. Focusing on the development requirements of large viewing‐area three‐dimensional holographic near‐eye displays, various technologies for enlarging the eyebox and field of view are reviewed. These solutions are classified and analyzed respectively based on the different principles, and their representative works are investigated in detail. Finally, combining these techniques, several promising applications of holography in the near‐eye display system are discussed.