Yamaguchi Yuta, Miura Masato, Higashida Ryo, Aoshima Ken-Ichi, Machida Kenji
Appl Opt. 2024 Mar 20;63(9):2204-2211. doi: 10.1364/AO.506449.
This study proposes a method for enlarging the viewing zone of holographic displays using the slanted arrangement of pixels on a spatial light modulator (SLM). The pixel arrangement equivalently reduces the horizontal pixel pitch, which enlarges the horizontal viewing zone of displays. Computer-generated holograms (CGHs) were calculated using an asymmetric band-limit filter corresponding to the asymmetric bandwidth of the SLM with slanted pixels. The proposed methods were evaluated through an optical reconstruction experiment using static holograms with a pixel size of 1×1µ, fabricated via electron-beam lithography. The enlarged horizontal viewing zone angle was found to be 41.6°.
本研究提出了一种利用空间光调制器（SLM）上像素的倾斜排列来扩大全息显示器视场的方法。这种像素排列等效地减小了水平像素间距，从而扩大了显示器的水平视场。使用与具有倾斜像素的SLM的非对称带宽相对应的非对称带限滤波器来计算计算机生成全息图（CGH）。通过使用通过电子束光刻制造的像素尺寸为1×1µ的静态全息图进行光学重建实验，对所提出的方法进行了评估。发现扩大后的水平视场角为41.6°。
