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Proceedings Paper

Design of two-dimensional waveguide head-up display
Author(s): Luo Gu; Dewen Cheng; Weihong Hou; Yongtian Wang
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Paper Abstract

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°, with an eyebox of 80 mmx80 mm.

Paper Details

Date Published: 28 May 2018
PDF: 7 pages
Proc. SPIE 10693, Illumination Optics V, 106930G (28 May 2018); doi: 10.1117/12.2312074
Show Author Affiliations
Luo Gu, Beijing Institute of Technology (China)
Dewen Cheng, Beijing Institute of Technology (China)
Weihong Hou, Suzhou Ned+ Tiancheng Optoelectronics Technology Co., Ltd. (China)
Beijing Ned+ AR Display Technology Co., Ltd. (China)
Yongtian Wang, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 10693:
Illumination Optics V
Tina E. Kidger; Stuart David, Editor(s)

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