Semi-lens lens array and fast Fourier transform to generate hologram for live electronic holography

Kenji Yamamoto; Tomoyuki Mishina; Makoto Okui

doi:10.1117/12.819785

19 May 2009 Semi-lens lens array and fast Fourier transform to generate hologram for live electronic holography

Kenji Yamamoto, Tomoyuki Mishina, Makoto Okui

Proceedings Volume 7358, Holography: Advances and Modern Trends; 73580U (2009) https://doi.org/10.1117/12.819785
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

We are studying electronic holography and have already developed a real-time color holography system for live scene which includes three functional blocks, capture block, processing block, and display block. One of the issues of such systems is to spoil half of the captured 3-D information due to half-zone-plate processing in processing block, which means the resolution of reconstructed 3-D objects is reduced to half at the instant of processing block. This issue belongs to not only our system but also all similar systems, because electronic display devices do not have enough resolution for hologram even now. In this paper, we propose to use semi-lens lens array (SLLA) in capture block to solve this issue, whose optical axis of elemental lens is not at the center of elemental lens but at the edge of it. In addition to that, we will describe the processing block for SLLA. We show the basic experimental results that SLLA is better than general lens array.

Citation Download Citation

Kenji Yamamoto, Tomoyuki Mishina, and Makoto Okui "Semi-lens lens array and fast Fourier transform to generate hologram for live electronic holography", Proc. SPIE 7358, Holography: Advances and Modern Trends, 73580U (19 May 2009); https://doi.org/10.1117/12.819785

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KEYWORDS

Holograms

Holography

Image processing

3D image processing

LCDs

3D image reconstruction

3D displays

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