高性能几何光波导头戴显示器设计

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关键词：光波导；近眼显示技术；光学设计；增强现实；头戴显示器中图分类号：TN252 文献标识码：Adoi：10.37188/OPE.20263401.0035 CSTR：32169.14.OPE.20263401.0035

Design of high-performance geometric waveguide head-mounted displays

XU Hengshen， JIANG Yuting，HU Yueqiang （National Research Center for High-Efficiency Grinding， College ofMechanical and Vehicle Engineering，Hunan University，Changsha 4lOo82，China） * Corresponding author， E-mail： huyq@hnu. edu. cn

Abstract： To satisfy augmented reality （AR） optical waveguide requirements for a large field of view （FOV），thin and lightweight form factor，and high immersion，a mass-producible thin-lightweight trans misive head-mounted display （HMD）optical system based on an arrayed geometric thin-film waveguide architecture was designed and implemented. The system comprises an eyepiece，an arayed waveguide module，and an illumination module.The arrayed waveguide employs an arry of semi-transparent，semireflective films with customized angle-selective coatings as the optical combiner，enabling pupil expansion. A dual-waveplate polarization-mixing scheme was introduced，improving display uniformity from 59.66% （204号 to 61.12% under single-polarized illumination and to 76.61% in practical measurements. Through comprehensive optical simulation and system-level optimization，and supported by a mature domestic optical manufacturing chain-including precision cutting，grinding and polishing， vacuum deposition of complex multilayer films，and high-precision bonding-together with an added waveplate lamination process，key technical bariers limiting the mass production of arrayed waveguides were overcome. A prototype was fabricated，and mass production Was achieved. The proposed approach resolves the longstanding trade-off between optical performance and manufacturability in AR HMDs，supporting both consumer and industrial applications.

Key words： waveguide； near-eye display technology； optical design； augmented reality； head-mounteddisplay

1引言

近年来，增强现实（AugmentedReality，AR）技术1成为一个炙手可热的研究方向，它具有实时交互性良好、信息集成度高及便携性等优点，在工业、军事、娱乐、医疗、交通运输等领域具有广泛的应用前景。（剩余8392字）