Design of an off-axis four-mirror system for automotive head-up display

Mao Zhou; Dewen Cheng; Qiwei Wang; Hailong Chen; Yongtian Wang

doi:10.1117/12.2579841

5 November 2020 Design of an off-axis four-mirror system for automotive head-up display

Mao Zhou, Dewen Cheng, Qiwei Wang, Hailong Chen, Yongtian Wang

Proceedings Volume 11565, AOPC 2020: Display Technology; Photonic MEMS, THz MEMS, and Metamaterials; and AI in Optics and Photonics; 1156507 (2020) https://doi.org/10.1117/12.2579841
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

It has been a challenge to design an automotive head-up display (HUD) that has large eyebox while maintain a compact structure. In this paper, we present a combiner-type HUD design using freeform mirrors. The HUD is an off-axis fourmirror system consisting of 4 mirrors, which are enclosed in a box to achieve a compact form. The tilt angle of the combiner is adjustable, which can be adapted to different heights of exit pupil. We initially propose an off-axis, fourmirror system which only uses spherical surfaces, then we optimize it by replacing with freeform surfaces, which enables us to balance the residual asymmetrical aberrations. Finally, we obtain an HUD system with good imaging performance. The virtual image is projected at 5 meters away from observer, and the eye box is 106 × 66 mm² .

Citation Download Citation

Mao Zhou, Dewen Cheng, Qiwei Wang, Hailong Chen, and Yongtian Wang "Design of an off-axis four-mirror system for automotive head-up display", Proc. SPIE 11565, AOPC 2020: Display Technology; Photonic MEMS, THz MEMS, and Metamaterials; and AI in Optics and Photonics, 1156507 (5 November 2020); https://doi.org/10.1117/12.2579841

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available