Design of two-dimensional waveguide head-up display

被引:2
作者
Gu, Luo [1 ]
Cheng, Dewen [1 ]
Hou, Weihong [2 ,3 ]
Wang, Yongtian [1 ]
机构
[1] Beijing Inst Technol, Sch Opt & Photon, Beijing Engn Res Ctr Mixed Real & Adv Display, Beijing 100081, Peoples R China
[2] Suzhou Ned Tiancheng Optoelect Technol Co Ltd, Changshu 215500, Jiangsu, Peoples R China
[3] Beijing Ned AR Display Technol Co Ltd, Beijing 100081, Peoples R China
来源
ILLUMINATION OPTICS V | 2018年 / 10693卷
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
Head-up display; geometrical waveguide; eyebox; projection;
D O I
10.1117/12.2312074
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The strive for the small volume and light weight in head-up displays has made the conventional configuration combining relay optics and combiner unpractical any more. In this paper, a compact and light-weight head-up display with a large eyebox is designed, with two orthogonal geometrical waveguides adopted to extend the exit pupil in both directions. This two-dimensional waveguide acts as a pupil expander, which can also save the whole system from the trouble of severe aberrations. A triangular prism serves as the input-coupling and the partially reflective mirrors array is used as the output-coupling. Parameters to shape the combined waveguide are derived. The spherical surface based coaxial projection system to match the combined waveguide are designed to project and magnify the virtual image onto a surface at infinity. The compact head-up display integrating projection optics and the combined waveguide has a horizontal field of 20 degrees, with an eyebox of 80 mmx80 mm.
引用
收藏
页数:7
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