System and eyewear for viewing stereoscopic imagery
US8279395B2 · kind B2 · utility
26Cited by
9References
9Claims
0Family size
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Key dates
| Filing date | Sep 8, 2008 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Jul 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2213/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A super-twist nematic (STN) liquid crystal (LC) light shutter with improved contrast performance, lower power requirements and enhanced off-axis performance. Compensator components may be disposed in front of and, in some cases, behind the liquid crystal cell. In some embodiments, a STN LC cell with a twist angle of 270 degrees may be used. In other embodiments, a STN LC cell with a twist angle ranging between just greater than 270 degrees and 285 degrees may be used. Also disclosed is a system incorporating the various disclosed STN LC shutters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.