Method for controlling an optical characteristic of a material and an analog imager for carrying out said method
US3995939A · kind A · utility
4Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1975 |
| Grant date | Dec 7, 1976 |
| Priority date | — |
| Expiry date | Jan 28, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling an optical characteristic of a material which is intercalated between two electrodes driven by periodic excitation signals having a zero mean value consists in applying to the electrodes signals having the same time-duration and the same recurrence frequency but in which one signal has a phase shift .phi. with respect to the other, the phase shift being modified in order to adjust the optical characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.