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Updated: Feb 7, 2026

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
Published on: January 14, 2020
Super-wide viewing-zone holographic 3D display using a convex parabolic mirror
Yusuke Sando1, Kazuo Satoh2, Takahiro Kitagawa2
1Osaka Research Institute of Industrial Science and Technology, Izumi center, Izumi, 594-1157, Japan. sando@tri-osaka.jp.
Abstract:
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.
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