The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
Volume 40 , Issue 1
Special Issue on 3D Display Systems for Large-Scale and Wide Viewing Zone and Their Related Technologies
Showing 1-8 articles out of 8 articles from the selected issue
Special Issue on 3D Display Systems for Large-Scale and Wide Viewing Zone and Their Related Technologies
Special Issue
Laser Review
  • Osamu MATOBA
    2012 Volume 40 Issue 1 Pages 4-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
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  • Sumio YANO, Masahiro KAWAKITA, Shoichiro IWASAWA, Naomi INOUE, Masahis ...
    2012 Volume 40 Issue 1 Pages 5-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    The research of “Universal communication” began to start in NICT from 2006, and the research theme “Ultra-realistic communication” was covered in this research fi eld. The glassless 200 inch screen size stereoscopic display is one of developed displays in this research theme. The main parameters of this display are 200 inch screen size (4.5 mH × 2.5 mV), aspect ratio 16 : 9, the number of image 50 over, the angle of visibility area 13 degree and the width of visibility area 1.3 m. These parameters were derived from the results of previously developed glassless 70 inch multi-view stereoscopic display. The glassless 200 inch multi-view stereoscopic display has many superior performances, which are HDTV image quality, high density view points, a large area screen and so on. This display has a possibility to adapt to the high-end digital signage and the industrial design tool for these features.
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  • Taiichiro KURITA
    2012 Volume 40 Issue 1 Pages 12-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    Since electronic holography has the potential to display natural 3D motion images of the highest quality, it is expected to be the future’s ultimate 3D video system. However, many difficult problems remain before such a practical system can be realized. The principle and the advantages of 3D image display by holography and the realization problems of an electronic holography video system are reviewed. The viewing-zone angle and display size problems are crucial. To solve those problems, NICT has recently developed an experimental electronic holography 3D display system with ultra high definition display devices as spatial light modulators and enlargement technology of the viewing-zone angle. The system has a wide 15 ° viewing-zone angle and a 4-cm-diagonal display size. These performances are currently the state of the art in electronic holography. Finally, we describe some future prospects for electronic holography.
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  • Kyoji MATSUSHIMA, Sumio NAKAHARA
    2012 Volume 40 Issue 1 Pages 18-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    Techniques for creating large-scale computer holograms whose number of pixels exceeds several billions pixels is described. The fields of virtual objects are calculated employing a technique called the polygon-based method that numerically produces the fields of the polygonal surface sources of light. The silhouette method that shields light behind the objects is also used to remove hidden surfaces and reconstruct occluded three-dimensional (3D) scenes. The calculated fields of virtual 3D scenes are numerically interfered with a reference wave, and the created binary fringe pattern is printed using a commercially available, laser lithography system. The computer holograms created by these techniques yield almost all depth cues without any additional equipment such as glasses and give viewers a strong sensation of depth that has never been achieved by conventional 3D systems.
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  • Michiharu YAMAMOTO, Weiping LIN, Tao GU, Peng WANG, Wanyun HSIEH, Ozai ...
    2012 Volume 40 Issue 1 Pages 28-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    Recently, with need for displays which are capable of creating dynamic holographic images, various approaches to reach such holographic imaging have been explored, but many technical issues still need to be overcome and breakthrough. We have been engaged in the development of materials from the viewpoint of novel and refreshable recording materials. We particularly focused on organic polymerbased photorefractive (PR) materials which are inexpensive to produce and easy to fabricate large area display medium. Here we describe a new holographic 3D display based on a novel PR material capable of refreshing images based on both CW and Pulsed laser holographic recording techniques. We also demonstrated multi-color capability by using angular multiplexing, full-parallax image, and “Telepresence” approaches. Thus, new type of hologram medium and system can be expected to accelerate unprecedented 3D imagery system.
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  • Takashi KOZAKAI
    2012 Volume 40 Issue 1 Pages 34-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    LCOS (Liquid Crystal On Silicon) devices enables both small size and fine pitch density on a small chip. This paper covers 4.8 micron pixel pitch LCOS device for holographic display, which has a special designed Silicon Back Plane and Liquid crystal.
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  • Hirotsugu YAMAMOTO
    2012 Volume 40 Issue 1 Pages 39-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    A viewing-zone control technique has been realized by use of polarization modulation. This paper reviews fundamentals of polarization encryptions by use of retarder fi lms and their application for the viewing-zone control of an information display. Optical encryption with two shared patterns enables secure display, which prevents eavesdropping of a displayed information and peeping at the decoded result. Optical encryption with stacking position as an additional key enables dual-view display, which provide two different displayed images without decreasing of image resolution. Thus, a multi-functional information display can be realized by renewing spatial codes for polarization modulation.
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Laser Original
  • Nozomu UEDA, Kouichi NITTA, Osamu MATOBA
    2012 Volume 40 Issue 1 Pages 46-
    Published: 2012
    Released: July 16, 2020
    JOURNALS FREE ACCESS
    A three-dimensional display system is presented that uses phase-only distribution calculated from polygon-based computer graphics (CG) data. For achieving a wide viewing zone, we use a time-sharing reconstruction at different directions where the angle step is the same as the maximum diffraction angle of a display panel. Phase-only data at each direction are calculated by the optical wave propagation of the polygon data from the CG and the transformation of the coordinates from a polygon data space to a display space. The numerical and experimental results showed that a viewing zone angle of 40 ° was achieved. By adding a random phase distribution in the polygon data, binary phase distribution can reconstruct 3D objects as well as multi-level phase distribution.
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