Sando Yusuke, Satoh Kazuo, Kitagawa Takahiro, Kawamura Makoto, Barada Daisuke, Yatagai Toyohiko
Osaka Research Institute of Industrial Science and Technology, Izumi center, Izumi, 594-1157, Japan.
Utsunomiya University, Center for Optical Research & Education, Utsunomiya, 321-8585, Japan.
Sci Rep. 2018 Jul 27;8(1):11333. doi: 10.1038/s41598-018-29798-5.
To enlarge both horizontal (azimuthal) and vertical (zenithal) viewing zones simultaneously, a convex parabolic mirror is placed after passing through the hologram. Viewers perceive a three-dimensional (3D) object inside the parabolic mirror as a virtual image by capturing the wavefront radially reflected from the parabolic mirror. The optical experiment using the convex parabolic mirror has demonstrated an extremely wide viewing zone with an azimuthal range of 180° and zenithal range of 90°. The viewing zone and the shape of the parabolic surface are analyzed. The hologram is designed considering the parabolic mirror reflection, and its diffraction calculation method based on Fermat's principle is also proposed.
为了同时扩大水平（方位角）和垂直（天顶角）观察区域，在穿过全息图后放置一个凸抛物面镜。观察者通过捕获从抛物面镜径向反射的波前，将抛物面镜内的三维（3D）物体视为虚像。使用凸抛物面镜的光学实验证明了一个极宽的观察区域，方位角范围为180°，天顶角范围为90°。分析了观察区域和抛物面的形状。考虑抛物面镜反射设计了全息图，并提出了基于费马原理的衍射计算方法。
