Abstract

Holographic display technology is one of the promising 3D display technologies. However, the large amount of computation time required to generate computer-generated holograms (CGH) is a major obstacle to the commercialization of digital hologram. In various systems such as multi-depth head-up-displays with hologram contents, it is important to transmit hologram data in real time. In this paper, we propose a rapid CGH computation method by applying an arraying of a down-scaled hologram with the multiplication of a shifted concave lens function array. Compared to conventional angular spectrum method (ASM) calculation, we achieved about 39 times faster calculation speed for 3840 × 2160 pixel CGH calculation. Through the numerical investigation and experiments, we verified the degradation of reconstructed hologram image quality made by the proposed method is not so much compared to conventional ASM.

© 2022 Optical Society of Korea

Real-time layer-based computer-generated hologram calculation for the Fourier transform optical system

Antonin Gilles and Patrick Gioia
Appl. Opt. 57(29) 8508-8517 (2018)

Fast calculation method of computer generated hologram animation for viewpoint parallel shift and rotation using Fourier transform optical system

Ryosuke Watanabe, Kazuhiro Yamaguchi, and Yuji Sakamoto
Appl. Opt. 55(3) A167-A177 (2016)

Fast calculation method of a CGH for a patch model using a point-based method

Y. Ogihara and Y. Sakamoto
Appl. Opt. 54(1) A76-A83 (2015)

CGH calculation with the ray tracing method for the Fourier transform optical system

Tsubasa Ichikawa, Takuo Yoneyama, and Yuji Sakamoto
Opt. Express 21(26) 32019-32031 (2013)

Speckle-suppression in hologram calculation using ray-sampling plane

Takeru Utsugi and Masahiro Yamaguchi
Opt. Express 22(14) 17193-17206 (2014)