Shen Zhongwen, Weng Yishi, Zhang Yuning, Wang Chuang, Liu Ao, Li Xiaohua
Joint International Research Laboratory of Information Display and Visualization, School of Electronics and Engineering, Southeast University, Nanjing 210018, China.
Polymers (Basel). 2021 Mar 18;13(6):936. doi: 10.3390/polym13060936.
This work proposes a green light-sensitive acrylate-based photopolymer. The effects of the preparation conditions for the waveguide applied volume holographic gratings (VHGs) were experimentally investigated. The optimum preparation conditions for holographic recording were revealed. After optimization, the peak of VHG diffraction efficiency reached 99%, the diffractive wavelength bandwidth increased from 13 nm to 22 nm, and the corresponding RIM was 0.06. To prove the wide application prospect of the acrylate-based photopolymer in head-mounted augmented reality (AR) displays, green monochromatic volume holographic waveguides were fabricated. The display results showed that the prototype was able to achieve a 28° diagonal FOV and possessed a system luminance of 300 cd/m.
这项工作提出了一种基于丙烯酸酯的绿色光敏光聚合物。通过实验研究了用于波导应用体积全息光栅（VHGs）的制备条件的影响。揭示了全息记录的最佳制备条件。优化后，VHG衍射效率峰值达到99%，衍射波长带宽从13nm增加到22nm，相应的RIM为0.06。为了证明基于丙烯酸酯的光聚合物在头戴式增强现实（AR）显示器中的广泛应用前景，制备了绿色单色体积全息波导。显示结果表明，该原型能够实现28°的对角视场，系统亮度为300cd/m²。
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