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Autostereoscopic 3D-imaging by front and rear projection and on flat panel displays

: Borner, R.


Displays. Technology and applications 14 (1993), No.1, pp.39-46
ISSN: 0141-9382
Journal Article
Fraunhofer HHI ()
flat panel displays; three-dimensional displays; front projection; rear projection; spatial images; lenticular screens; panoramic parallax stereograms; screen structure; light-valve; video projection; lenticular screen; rastered images; overhead projectors; electroluminescence display; two-channel systems

Autostereoscopic photographic and video systems for taking and projecting spatial images onto large lenticular screens in order to create panoramic parallax stereograms have been developed at the Heinrich-Hertz-Institut in Berlin, Germany. Camera and projection units were conceived and built, the optical conditions of the screen structure improved, and a 24-channel projection system for slides was installed, leading to a future light-valve type for video projection. The application of the lenticular screen method to rear projection and flat panel displays was also investigated, using the rastered images of video and overhead projectors and an electroluminescence display. Although the resolution of currently available equipment for these systems is only adequate for two-channel systems, the equipment was useful in studying the fundamental problems experimentally. The specially designed lenticular screens also make the systems suitable for workstation head tracking systems, if two-channel stereoscopic imaging is sufficient.