Three-dimensional projection display apparatus
US5703717A · kind A · utility
34Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1994 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Nov 10, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A 3D projection display comprises an autostereoscopic image producing unit which directs light beams corresponding to respective 2D views in different directions towards a projection lens. The projection lens co-operates with the image producing unit to image the light beams at respective different regions in the aperture of the projection lens. A light-transmissive screen co-operates with the image producing unit and the projection lens to image the views at the screen. The screen may comprise a Fresnel lens, or where a magnified image of increased angular spread is required, a double lenticular screen angular amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.