Thermo-optic liquid-crystal device for real-time display of animated images
US4099857A · kind A · utility
10Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1975 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | Nov 18, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a liquid crystal imaging system which employs a transitory thermo-optic effect to permit notably the reproduction of T.V. images. This transitory effect is characterized by the fleeting appearance of scattering cybotactic zones in the transparent liquid phase of a mesomorphic material, at the very beginning of the transition to a nematic transparent ordered phase. The duration of the scattering period can be considerably shortened by subjecting the mesomorphic material layer to the action of an alternating electrical field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.