大视场宽出瞳近眼显示光机优化设计方法  

Design method of wide-angle and large exit-pupil near-eye display optics

作　　者：姜帅 许两发 刘娟[1] JIANG Shuai;XU Liangfa;LIU Juan(Beijing Engineering Research Center of Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京市混合现实与新型显示工程技术研究中心北京理工大学光电学院,北京100081

出　　处：《光学技术》2024年第6期686-689,共4页Optical Technique

基　　金：国家自然基金(U22A2079,62035003,61975014)。

摘　　要：针对近眼显示系统中光机的大视场和宽出瞳相互制约,提出了一种可用于近眼显示的大视场与宽出瞳尺寸的光机设计方案。方案优化设计了四块非球面透镜,通过设计两个不同的正交平面出瞳,扩展其中一个方向的出瞳距离和尺寸,不仅提高成像质量,而且减小畸变。为了验证该优化设计方法,设计了近眼显示系统,实现了彩色、对角视场角为53.6°、出瞳距离为30mm、出瞳尺寸为8mm的优化设计。该光机的优化设计方法为实现大视场近眼显示系统提供了技术参考。The wide-angle and wide exit pupil of the display optics in near-eye display systems present a trade-off relationship.An optical design scheme for achieving both wide-angle and large exit-pupil sizes in near-eye display systems is proposed and discussed.For the projector design,several aspherical lenses are co-designed to improve the imaging quality and to reduce the distortion,where the exit pupils in YZ and XZ plane are separated to expand the exit pupil in one direction and increase the optical length from the projector to the exit pupil.To validate this optimization design method,a near-eye display system with full-color,a field of view of 53.6°,an exit pupil distance of 30mm,and an exit pupil diameter of 8mm is achieved.The optimized design method of the near-eye display optics provides a technical reference for the realization of wide-field near-eye display systems.

关 键 词：近眼显示 增强现实 光学设计 光波导 

分 类 号：TP873[自动化与计算机技术—检测技术与自动化装置] O43[自动化与计算机技术—控制科学与工程]