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1.湖南大学 机械与运载工程学院国家高效磨削中心,湖南 长沙 410082
2.深圳珑璟光电技术有限公司,广东 深圳 518100
3.湖南大学 深圳研究院 珑璟光电微纳光学先进制造实验室,广东 深圳 518100
songqiangshanghai@foxmail.com
Received:27 August 2020,
Revised:15 October 2020,
Published:15 January 2021
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姜玉婷,张毅,胡跃强等.增强现实近眼显示设备中光波导元件的研究进展[J].光学精密工程,2021,29(01):28-44.
JIANG Yu-ting,ZHANG Yi,HU Yue-qiang,et al.Development of optical waveguide elements in augmented reality near-eye displays[J].Optics and Precision Engineering,2021,29(01):28-44.
姜玉婷,张毅,胡跃强等.增强现实近眼显示设备中光波导元件的研究进展[J].光学精密工程,2021,29(01):28-44. DOI: 10.37188/OPE.20212901.0028.
JIANG Yu-ting,ZHANG Yi,HU Yue-qiang,et al.Development of optical waveguide elements in augmented reality near-eye displays[J].Optics and Precision Engineering,2021,29(01):28-44. DOI: 10.37188/OPE.20212901.0028.
增强现实技术是一种将虚拟环境信息叠加在真实世界中并加以有效利用的一种新型显示技术,在教育、医疗、旅游、汽车、建筑等领域有广阔的应用前景。增强现实近眼显示设备是增强现实技术的重要组成部分,而光波导是实现增强现实近眼显示设备高性能与微型化等特性的核心光学元件。光波导主要分为几何光波导和衍射光波导,几何光波导原理简单,其制备技术较为完善并且可以实现量产,但视场角与出瞳范围较小、制备工艺复杂;衍射光波导则具有极高的设计自由度及优良的性能,但成像时存在的彩虹效应与色散等问题仍待解决。本文综述了不同类型光波导的设计和制备技术,分析了几何光波导和衍射光波导在原理、结构参数、性能评价和制备流程等方面的表现,最后总结了目前增强现实近眼显示技术所面临的挑战,并对未来的发展前景进行展望。
Augmented reality (AR) technology is a new type of display technology that superimposes information from a virtual environment onto the real world and makes effective use of it. It has broad application prospects in education, medical care, tourism, automobiles, construction, and other fields. AR near-eye display devices are a major part of AR technology, and optical waveguides are the core optical elements used to realize high performance and miniaturization of AR near-eye displays. Optical waveguides are primarily divided into geometrical and diffractive optical waveguides. The principle behind geometrical optical waveguides is simple. Its preparation technology is relatively complete and can be mass produced. However, the field of view and exit pupil range are small, the preparation process is complicated, and the diffractive optical waveguides rely on an extremely high degree of design freedom to obtain excellent performance. In addition, the problems of rainbow effect and dispersion in imaging must be solved. This study mainly focuses on the design and manufacturing technology of different types of optical waveguides. It also analyzes the advantages and disadvantages of geometrical and diffractive optical waveguides in terms of principles, structural parameters, performance evaluation, and preparation process. Finally, the study summarizes the challenges faced by current AR near-eye display technology and looks forward to future developmental prospects.
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