The directional display

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Håkan Lennerstad
Title: The directional display
Conference name: Stereoscopic Displays and Virtual Reality Systems IV
Year: 1997
Pagination: 353-7
ISBN: 0277-786X
Publisher: SPIE-Int. Soc. Opt. Eng
City: San Jose, CA, USA
ISI number: A1997BH98B00042
Organization: Blekinge Institute of Technology
Department: Dept. of Telecommunications and Mathematics (Institutionen för telekommunikation och matematik)
Dept. of Telecommunications and Mathematics S-371 79 Karlskrona
+46 455 780 00
Authors e-mail:
Language: English
Abstract: The directional display contains and shows several images-which particular image is visible depends on the viewing direction. This is achieved by packing information at high density on a surface, by a certain back illumination technique, and by explicit mathematical formulas which eliminate projection deformations and make it possible to automate the production of directional displays. The display is illuminated but involves no electronic components. Patent is pending for the directional display. Directional dependency of an image can be used in several ways. One is to achieve three-dimensional effects. In contrast to that of holograms, large size and full color involve no problems. Another application of the technique is to show moving sequences. Yet another is to make a display more directionally independent than conventional displays. It is also possible and useful in several contexts to show different text in different directions with the same display. The features can be combined.
Subject: Mathematics\Geometry
Keywords: directional display, viewing direction, back illumination, moving sequences, stereographic display, projection, background illuminatio, image resolution