Abstract
The multiplane augmented reality (AR) head-up display (HUD) is important in improving driving safety and comfort. In this paper, we propose an AR-HUD with switchable display modes based on polymer dispersed liquid crystal (PDLC) and lens holographic optical elements (HOEs), which can provide two display modes: the dual-virtual-image mode and the virtual-real-image mode. The dual-virtual-image mode can produce two virtual images at different depths, which can provide a better sense of reality integration for the driver to improve driving safety and comfort. The virtual-real-image mode can produce one far virtual image and one near real image at different depths, and it provides a larger eye box (EB) for both driver and passengers in the car and a higher image contrast. The two display modes can be switched by an electronically controlled scattering module consisting of a pair of PDLC films. The proposed AR-HUD system is compact and equipped with multiplane display and mode-switching functions, and is expected to be applied in the future.
© 2024 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Zhenlv Lv, Yuan Xu, Yan Yang, and Juan Liu
Appl. Opt. 61(33) 9962-9971 (2022)
Zong Qin, Shih-Ming Lin, Kuang-Tso Luo, Cheng-Huan Chen, and Yi-Pai Huang
Appl. Opt. 58(20) 5366-5374 (2019)
Yi Liu, Jiaqi Dong, Yuqing Qiu, Bo-Ru Yang, and Zong Qin
Opt. Express 31(22) 35922-35936 (2023)