Microchannel spatial light modulator
US4481531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1984 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Jan 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microchannel spatial light modulator that has a photocathode to receive incident light and to provide a spatial distribution of photoelectrons (herein called an electron image) whose spatial number density is proportional to the spatial intensity of the incident light. A microchannel plate is provided to receive the photoelectrons and to amplify the electron image. An electro-optic plate is provided to receive the amplified electron image; there is a dielectric mirror coating and an insulating light-blocking layer at one major surface thereof to receive the electron image and a transparent electrode at the other major surface thereof for biasing purposes. All of the foregoing elements are contained within a vacuum housing; suitable electrical potentials are applied to effect the necessary results. The modulator is capable of real-time phase or intensity modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.