Optical viewing system for asynchronous overlaid images
US5956180A · kind A · utility
Inventors
Key dates
| Filing date | Dec 31, 1996 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/395
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical viewing system for producing multiple image displays comprises a first screen for displaying a first two-dimensional image on a first electronic display device at a first predetermined distance from an observer and a second screen for displaying a second two-dimensional image on a second electronic display device at a second predetermined distance from the observer. Each of the screens is located at different predetermined locations on an optical viewing path relatively nearer to and farther from the observer. The first two-dimensional image is projected through the second screen, creating a multiple overlaid picture image. The first and second electronic display devices are operable asynchronously without degrading the multiple overlaid picture image. The screen disposed in the optical viewing path at the predetermined location nearer to the observer is partially transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.