Volume 8 Issue 2
Apr.  2015
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Chinese Optics  > 2015  >  8(2): 227-233.
ZENG Zhen-xiang, ZHENG Hua-dong, LU Xiao-qian, GAO Hong-yue, YU Ying-jie. Viewing angle enlargement in holographic 3D display by spatial light modulators tiling in curved configuration[J]. Chinese Optics, 2015, 8(2): 227-233. doi: 10.3788/CO.20150802.0227
Citation: ZENG Zhen-xiang, ZHENG Hua-dong, LU Xiao-qian, GAO Hong-yue, YU Ying-jie. Viewing angle enlargement in holographic 3D display by spatial light modulators tiling in curved configuration[J]. Chinese Optics, 2015, 8(2): 227-233. doi: 10.3788/CO.20150802.0227
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Viewing angle enlargement in holographic 3D display by spatial light modulators tiling in curved configuration

  • Laboratory of Applied Optics and Metrology,Department of Precision Mechanical Engineering,Shanghai University,Shanghai 200072,China

  • Received Date: 11 Dec 2014
  • Accepted Date: 13 Feb 2015
  • Publish Date: 25 Apr 2015
    Abstract
  • In this paper, we analyzed the principles of tiling SLMs to enlarge the viewing angle of holographic 3D reconstructions. Based on the idea of tiling multi-SLMs, we designed a holographic 3D display system using planar mirrors, beam splitters and two transmission-type SLMs tiled in curved configuration to enlarge the viewing angle of reconstructed image. We calculated computer-generated holograms of a pyramid using slice-based Fresnel diffraction algorithm, and reconstructed it with self-setup holographic display system. The results indicate that, in contrast to 1.7° of viewing angle obtained by a single SLM, the viewing angle of holographic reconstructed images is enlarged to 3.2° with 2 tiling transmission-type SLMs by about 1.9 times. The beam splitter can remove the gap of two SLMs' active areas to realize seamless tiling. This method is also applicable to tile more SLMs in curved configuration and can effectively enlarge the viewing angle of holographic display.

     

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