Liquid crystal light valve using non-monochromatic writing light
US5144463A · kind A · utility
4Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Dec 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display unit uses a photoconductive type liquid crystal light valve. By using non-monochromatic light as the writing light, the light excitation can be induced near the surface layer of the photoconductive layer by light of a shorter wavelength and also on portions deep in the layer by light of a longer wavelength. Thus, it is possible to induce the light excitation effectively on the photoconductive layer even when it is thick.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.