摘要
为了设计出具有更大视场、更高成像质量且结构轻巧的头戴显示器以满足高端场合的需求,采用拼接非球面和折叠光路系统设计了两片式头戴显示器。该光学系统使用两片透镜,包含一个拼接非球面、一个平面和两个球面,4个表面分别镀半透半反膜、相位延迟膜、偏振反射膜以及减反膜。先通过像差理论计算出初始结构,然后引入拼接非球面以进一步提高边缘视场的成像质量,并对设计结果进行了公差分析。结果表明,软件仿真后光学系统的全视场角达到100°,边缘视场在奈奎斯特频率处调制传递函数大于0.3,出瞳直径为8 mm,出瞳距离为14 mm,从眼瞳到像源,系统总长不超过30 mm,两片透镜的总质量仅为21.0 g。采用拼接非球面和折叠光路能明显提升头戴显示器的性能,可为大视场高成像质量头带显示器的研究提供参考。
In order to design a head-mounted display with a larger field of view,higher image quality,and a lightweight structure to meet the needs of high-end occasions,a two-chip head-mounted display was designed with a tiled aspheric and folded optical path system.Two lenses consist of a stitched aspherical surface,a planar surface,and two spherical surfaces were adopted,and the four surfaces were coated with a semi-transparent and semi-reflective coating,a phase delay film,a polarization reflective film,and an anti-reflection coating.Firstly,the initial structure was calculated by aberration theory,and then in order to further improve the imaging quality of the edge field of view,the stitched aspheric surface was introduced,and the tolerance analysis of the design results was carried out.The results show that the full field of view of the optical system reaches 100°,the modulation transfer function of the edge field of view is greater than 0.3 at the Nyquist frequency,the diameter of the exit pupil is 8 mm,the distance of the exit pupil is 14 mm,the total length of the system from the pupil to the image source is not more than 30 mm,and the total mass of the two lenses is only 21.0 g.The use of stitched aspheric and folded optical paths can significantly improve the performance of head-mounted displays,which can provide a reference for the research of high-imaging quality headband displays with large fields of view.
作者
柏香虎
陈瑾
于洋
刘雪峰
BAI Xianghu;CHEN Jin;YU Yang;LIU Xuefeng(School of Physics and Electronic Information,Anhui Normal University,Wuhu 241002,China)
出处
《激光技术》
北大核心
2025年第4期513-518,共6页
Laser Technology
基金
安徽省教育厅质量工程项目(2023lhpysfjd011,2023qygzz008)。
关键词
光学设计
头戴显示器
折叠光路
拼接非球面
optical design
head mounted display
folding optical path
stitched aspheric surface
