Abstract Projection-type multiview holographic three-dimensional (3D) display using a single spatial light modulator (SLM) and a directional diffractive device (DDD) composed of pixelated gratings is able to present 3D scenes with wide viewing angle and significantly reduced data volume. However, there are still several limitations on the display performance, such as finite number of viewpoints and low resolution for each view. In this paper, we propose an optimization method of projection-type multiview holographic 3D display by using multiple SLMs and a large-area DDD, where the total valid pixels used for multiview 3D display are substantially increased thanks to the seamless mosaic of holographic reconstructed images of multiple computer-generated holograms (CGHs) displaying on the SLMs so that the display performance can be noticeably improved. Two verification experiments are performed by combining two phase-only SLMs with an 8-view and a 4-view DDDs, respectively. The experimental results confirm that the crosstalk-free multiview holographic 3D displays with more viewpoints or higher resolution are successfully achieved, verifying the effectiveness of the proposed method.

中文翻译：

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使用空间光调制器的投影式多视图全息三维显示的性能改进

摘要 使用单个空间光调制器 (SLM) 和由像素化光栅组成的定向衍射装置 (DDD) 的投影型多视图全息 3D (3D) 显示器能够呈现具有宽视角和显着减少数据量的 3D 场景。然而，显示性能仍然存在一些限制，例如有限数量的视点和每个视图的低分辨率。在本文中，我们提出了一种利用多个 SLM 和大面积 DDD 的投影式多视图全息 3D 显示优化方法，由于在 SLM 上显示的多个计算机生成全息图 (CGH) 的全息重建图像的无缝拼接，用于多视图 3D 显示的总有效像素显着增加，从而显着提高了显示性能。通过将两个仅相位的 SLM 分别与 8 视图和 4 视图 DDD 相结合，进行了两个验证实验。实验结果证实，成功实现了具有更多视点或更高分辨率的无串扰多视图全息3D显示器，验证了所提出方法的有效性。