Diffractive optical modulator and method for producing the same, infrared sensor including such a diffractive optical modulator and method for producing the same, and display device including such a diffractive optical modulator
US5920418A · kind A · utility
135Cited by
5References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1995 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Jun 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/7416
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The diffractive optical modulator of the invention includes: a plate having a portion functioning as a first electrode; a spacer layer formed on the plate; and a grating consisting of a plurality of beams having a portion functioning as a second electrode, both ends of the beams being supported on the spacer layer. In the diffractive optical modulator, by adjusting a voltage applied between the first electrode and the second electrode, a distance between the beams and the plate is varied, thereby controlling the diffraction efficiency. An insulating layer is further provided between the plate and the plurality of beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.