光学
波导管
栅栏
极化(电化学)
衍射效率
单色
瞳孔功能
出瞳
衍射
物理
材料科学
小学生
化学
物理化学
作者
Yishi Weng,Yuning Zhang,Wei Wang,Yuchen Gu,Chuang Wang,Ru‐Dong Wei,Lixuan Zhang,bao wang
出处
期刊:Optics Express
[The Optical Society]
日期:2023-02-08
卷期号:31 (4): 6601-6601
被引量:7
摘要
We propose a two-dimensional exit pupil expansion (2D-EPE) design of a diffractive waveguide (DW) based on polarization volume grating (PVG). The designed waveguide structure and pupil expansion principle are introduced in this paper. The light propagation behavior and available field of view (FoV) of the proposed waveguide are investigated by simulations. In addition, the waveguide sample based on the proposed design is prepared, and an imaging system based on a monochromatic MicroLED projector is built for AR imaging experiments. The experimental results show that the prepared waveguide system can achieve a clear AR display with a diagonal FoV of 30° and obtain an exit pupil magnification of nearly 20 times compared to the entrance pupil size. The optical imaging efficiency was measured to be 3.85%, and the backward light leakage rate was as low as 8.7%. This work further enhances the feasibility and practicality of the PVG-waveguide technology and provides a promising candidate for AR-DW applications.
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