水平扫描全息显示器灰度表示的改进。
Improvement of grayscale representation of the horizontally scanning holographic display.
作者信息
Takaki Yasuhiro, Yokouchi Masahito, Okada Naoya
机构信息
Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan.
出版信息
Opt Express. 2010 Nov 22;18(24):24926-36. doi: 10.1364/OE.18.024926.
The horizontally scanning holographic display has increased viewing angle and display screen size as compared to conventional holographic displays. Elementary holograms, which are generated by a high-speed SLM and projected by an anamorphic imaging system, are aligned horizontally by a galvano mirror. When the frame rate of the SLM is high, the width of the elementary holograms becomes several times as large as their horizontal display pitch so that several sets of elementary holograms can be displayed. A laser is modulated to illuminate different elementary hologram sets by different laser powers. The grayscale representation of reconstructed images is improved by properly designing the elementary hologram sets and the illumination laser powers.
与传统全息显示器相比，水平扫描全息显示器具有更大的视角和显示屏尺寸。由高速空间光调制器（SLM）生成并由变形成像系统投射的基本全息图，通过振镜水平对齐。当SLM的帧率较高时，基本全息图的宽度变为其水平显示间距的几倍，从而可以显示几组基本全息图。通过不同的激光功率调制激光以照亮不同的基本全息图集。通过合理设计基本全息图集和照明激光功率，改善了重建图像的灰度表示。
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