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3D desktop displays for multimedia

: Hopf, K.; Runde, D.

Nordby, K.:
Human Factors in Telecommunications. 16th International Symposium : Oslo, Norway, May 12 - 16, 1997
Oslo, 1997
International Symposium on Human Factors in Telecommunications (HFT) <16, 1997, Oslo>
Conference Paper
Fraunhofer HHI ()
computer displays; human factors; multimedia communication; multimedia computing; three-dimensional displays; virtual reality; 3d desktop displays; multimedia; autostereoscopic display; communication applications; heinrich-hertz-institute; spatial reproduction; small displays; puppet theatre effect; telepresence; optical systems; fresnel lenses; concave mirrors

Research and development on 3D displays has made great progress and even autostereoscopic 3D displays are on the verge of being put onto the market. The main market within the near future will be, besides entertainment applications, the field of multimedia desktop displays. An autostereoscopic display suitable for communication applications has been developed at the Heinrich-Hertz-Institute. Different demands for a stereoscopic desktop display were fulfilled. Here, a human factors problem concerning spatial reproduction at small displays has to be solved: with common 3D-desktop-displays only a limited volume of depth around the screen surface can be reproduced without causing eye-strain. The reproduction of people and faces at an unnatural small scale leads to the "puppet theatre effect". This prevents the system from achieving a high degree of telepresence in communication applications. The reproduction of the scene in a larger distance behind the screen plane may avoid the effect of miniaturism. In this case the plane of accommodation has to be shifted to achieve comfortable viewing conditions. This shifting of the plane of accommodation can be achieved to a certain degree by means of optical systems. A study is reported in the following, within the framework of which the use of Fresnel lenses and concave mirrors was simulated. Different optical systems were evaluated to find the best method for a realisation.