Optical systems for the display of visual images
US4056827A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1975 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Oct 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical display system for a craft navigation simulator providing a wide angle display of greater than 3:1 width/height format derived from a closed circuit television camera viewing a terrain model. A wide-angle scene viewed is divided into three or more parts at vertical boundaries all of which are off-center and folded by a first optical system into substantially square format, in which format the composite image is processed from camera tube to display tube. A second optical system reconstructs the original wide angle image. By this means, high definition of the image in the center region and, particularly, near the horizon, is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.