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      • Department of Electrical and Electronics Engineering
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      A new approach to holographic video imaging: principles and simulations

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      Author
      Onural, Levent
      Bozdağı, Gözde
      Atalar, Abdullah
      Date
      1992
      Source Title
      Proceedings of SPIE Vol. 1667, Practical Holography VI
      Print ISSN
      0277-786X
      Publisher
      SPIE
      Volume
      1667
      Pages
      63 - 72
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      As the importance of 3-dimensional information displays in many fields increases, more attention is given to holographic displays. Different kinds of holographic displays are reported in the literature, but the resolution of the available display media is not sufficient to support the extraordinary spatial detail of holograms. In this paper, we propose a new acousto-optical holographic display device which solves significantly the display resolution and the refreshing problems that are common to available holographic displays. The technique is based on the reproduction of the hologram using traveling surface waves. The SAW device that is used as the medium of display has an array of electrodes attached to it. An electrical signal applied to one of these electrodes generates an acoustical wave propagating on the surface of the crystal where the electrodes are the sources. If signals are applied to all of the electrodes simultaneously, propagating waves from the electrodes superpose to form a time-varying surface field pattern on the crystal. This pattern, at a specific time, forms the hologram. The signals which should be applied to the electrodes, in order to have a specified field pattern on the crystal at a specified time instant are found through a mathematical inversion relation. The inversion relationship is derived from the underlying physics. Computer simulations of the proposed TV display show that the proposed system will work as desired. In addition, our preliminary studies show that the proposed system can be constructed with the available acoustical, optical, electronic technology, and with the application of digital signal processing techniques.
      Keywords
      Acoustic surface wave devices
      Acoustooptical devices
      Computer simulation
      Display devices
      Acoustooptical holographic display device
      Holographic video imaging
      Inversion relationship
      Propagating wave superposition
      Three-dimensional information displays
      Holography
      Permalink
      http://hdl.handle.net/11693/27813
      Published Version (Please cite this version)
      https://doi.org/10.1117/12.59620
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      • Department of Electrical and Electronics Engineering 3524
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