Device for projecting steroscopic, anamorphotically compressed pairs of images on to a spherically curved wide-screen surface
US4555168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1983 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Apr 8, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B37/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optical device comprises a lighting unit with two light sources (1) with reflectors (2), whose optical axes (11) are inclined towards one another, with prism pairs (3, 4) for forming two parallel image channels (10, 11) arranged in the optical path and a supplementary lens arranged after a basic optical (12) of a commercial projector for the lateral expansion of the linearly compressed individual images and lenses (A, B, C) for the distortion-free superwide angle imaging of the image pairs on a spherically curved surface. By means of this optical device, a normal commercially available cine projector can be upgraded to a projection apparatus for stereoscopic, linear anamorphotically compressed image pairs on an extremely large, spherically curved wide-screen surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.