Real time autostereoscopic displays using holographic diffusers
US4799739A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Aug 10, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/2265
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and apparatus for providing real time autostereoscopic displays using holographic diffusers are disclosed. In accordance with the method, a diffuse holographic optical element is fabricated whereby an image projected onto the diffused holographic optical element will be viewable only over a limited horizontal extent of less than the separation of a typical viewer's eyes. Then the holographic optical element is used as a projection screen for a plurality of projectors spatially positioned with respect to each other so that the horizontal position within which the image of each projector is viewable is substantially contiguous with the horizontal position of viewability of the respective adjacent projector whereby the autostereoscopic effect is achieved. Various embodiments, including the transmission mode and reflection mode holographic optical elements, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.