光学
栅栏
光线追踪(物理)
衍射
衍射效率
波导管
严格耦合波分析
衍射光栅
照度
出瞳
波长
入学学生
物理
小学生
作者
Gaoyu Dai,Han Yang,Luqiao Yin,Kailin Ren,Jingjing Liu,Xiaolong Zhang,Jianhua Zhang
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2024-02-02
卷期号:32 (5): 6917-6917
被引量:1
摘要
Augmented reality head-up display (AR-HUD) using diffractive waveguide is a challenging research field. It can drastically reduce the system volume compared with AR-HUD based on freeform mirror. However, one of the remaining challenges that affects the performance of the diffractive waveguide is to expand the eye-box while maintaining the illuminance uniformity. In this paper, a one-dimensional pupil expansion diffractive optical waveguide system for AR-HUD is presented. The optimization of grating parameters is based on scalar diffraction theory and rigorous coupled wave analysis (RCWA). Then, the illuminance uniformity is optimized through non-sequential ray tracing. We simulate and construct a waveguide-based AR-HUD. The presented AR-HUD realized an exit pupil size of 80 mm × 15 mm and a field of view of 10° × 5° at the wavelength of 532 nm.
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