Observer tracking directional display
US6377295B1 · kind B1 · utility
135Cited by
11References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Aug 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An observer tracking directional display comprises a spatial light modulator associated with a movable parallax optic. An observer tracker determines the position of an observer and controls the position of the optic by way of an electromechanical transducer and a mechanical transmission. The mechanical tracking arrangement has a plurality of stationary positions for the parallax optic relative to the spatial light modulator (SLM) and steps between these positions so as to optimize the viewing windows for the current position of the observer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.