Spatial light modulator
US4763996A · kind A · utility
5Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1985 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Nov 18, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A crystal structure arrangement used in a spatial light modulator wherein an electrooptic crystal structure faces an electron beam source, such as a photocathode or an electron gun, within a vacuum envelope. Electrons emitted from the electron beam source in response to an image or image signal source are stored on the surface of the electrooptic crystal structure to form a charge image thereon and then to change the refractive index of the electrooptic crystal structure corresponding to the stored charge image. The refractive index change is read out using a laser beam or incandescent light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.