Infrared detector arrays
US4792681A · kind A · utility
28Cited by
15References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1986 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Oct 23, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/345
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The capacitive bolometer comprises a detection capacitor having a first-order phase transistion ferroelectric material between two electrodes. The detection capacitor operates during a detection step and a subsequent readout step. During the detection step, a preselected electric field is applied to the detection capacitor to maximize its sensitivity to temperature. A second electric field is applied to the capacitor during the readout step in order to increase responsivity of the detection cell. The detection cells according to the invention can be assembled into disclosed detection arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.