Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
권호 표지

3-D DISPLAY USING COMPUTER-GENERATED BINARY HOLOGRAMS

  • Yoshinori-Kajiki (College of Business Administration and Information Science, Koshien University, Hyogo, Japan) ;
  • Masaaki-Okamoto (Laboratories of Image Information Science & Technology, Osaka, Japan) ;
  • Koji-Yamasaki (Laboratories of Image Information Science & Technology, Osaka, Japan) ;
  • Eiji-Shimizu (Faculty of Engineering, Osaka City University, Osaka, Japan)
  • Published : 1999.06.01

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Abstract

We have been making researches on 3-D displays using computer-generated holograms(CGHs). Our CGHs are binary Fresnel holograms that reconstruct point light sources and are recorded by using high resolution laser printers (image setters). We use an image setter with a resolution of 5080 dots per inch. It is possible to reconstruct CGHs with light-emitting points. As the resolution of the image setter is not so high, it is better to use a spherical wave as a reference beam. We considered the recordable points objects are restricted by the low resolution, and proposed the multiplex type hologram to reduce the number of point objects recorded in the unit area of the CGH. We proposed a method to make computer-generated color hologram which could reconstruct color point light sources, by combining RGB color filters with the stripe CGHs corresponding to each color. We considered two kinds of gradation method on our binary CGHs. In this paper, we propose a multiple reconstruction method for improving the narrow viewing field.

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