论文标题
从数字填充的数字孔径的数字菲涅尔全息图对重建图像的查看角度分析
Viewing angle analysis of reconstructed image from digital Fresnel hologram with enhanced numerical aperture
论文作者
论文摘要
全息图像的观察角扩大是实现全息显示的关键因素。已知数字全息图的数值孔径（Na）已知以确定图像的角场范围。在这里，我们通过数学上研究采样点扩散函数的内部结构，表明其调节曲线的自相似性，尤其是在量子机械框架的基础上分析该方案，从而为全息图数值光圈的依赖提供了有效的基础。增强的Na菲涅尔全息图以高分辨率生成多个图像，这可能导致更高的视角表示为全息图的整个光圈的Na。光学实验显示了全息图像的视角的量子机械描述的一致结果。最后，我们讨论了扩大全息图像观看角的方法，而无需使用此方案牺牲图像大小。
The viewing-angle enlargement of a holographic image is a crucial factor for realizing the holographic display. The numerical aperture (NA) of digital hologram other than a pixel specification has been known to determine the angular field extent of image. Here, we provide a valid foundation for the dependence of viewing angle on the hologram numerical aperture by investigating mathematically the internal structure of the sampled point spread function showing a self-similarity of its modulating curves and especially, analyzing this scheme on the basis of quantum mechanical framework. The enhanced-NA Fresnel hologram generates the multiple images with a high resolution, which can lead to the higher viewing angle represented as the NA of whole aperture of hologram. Optical experiment shows the consistent result with quantum mechanical description of viewing angle of holographic images. Finally, we discuss the method for enlarging viewing angle of holographic image without sacrificing image size by using this scheme.
