title: Large size three-dimensional video by electronic holography using multiple spatial light modulators.
abstract: In this paper, we propose a new method of using multiple spatial light modulators (SLMs) to increase the size of three-dimensional (3D) images that are displayed using electronic holography. The scalability of images produced by the previous method had an upper limit that was derived from the path length of the image-readout part. We were able to produce larger colour electronic holographic images with a newly devised space-saving image-readout optical system for multiple reflection-type SLMs. This optical system is designed so that the path length of the image-readout part is half that of the previous method. It consists of polarization beam splitters (PBSs), half-wave plates (HWPs), and polarizers. We used 16 (4 × 4) 4K×2K-pixel SLMs for displaying holograms. The experimental device we constructed was able to perform 20 fps video reproduction in colour of full-parallax holographic 3D images with a diagonal image size of 85 mm and a horizontal viewing-zone angle of 5.6 degrees.
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Hisayuki
authors.initials: H
authors.lastname: Sasaki
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Yamamoto
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Wakunami
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Ichihashi
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Ryutaro
authors.initials: R
authors.lastname: Oi
authors.affiliation: Universal Communication Research Institute, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan.
authors.forename: Takanori
authors.initials: T
authors.lastname: Senoh