Ferroelectric imaging system
US4143269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved ferroelectric imaging system comprises a chopper, lens system, ferroelectric detector matrix, anistropic heat sink, switching matrix, temperature controlled heat sink, drive and read out electronics, video processor, and display. The chopper interrupts infrared energy emanating from a scene, and the lens system focuses the chopped infrared energy on the ferroelectric detector matrix which produces electrical signals representative of the infrared energy impinging thereon. The signals are read out by the drive and read out electronics whose action is synchronized with the chopper action, processed in the video processor and displayed by the display. The ferroelectric detector matrix is a plurality of detector capacitor elements whose lower plates are metal pads formed on the lower surface of the dielectric which is a wafer of ferroelectric material. The switching matrix includes a corresponding plurality of solid state switches operatively connected to output pads, a bias source, and the drive and readout electronics. The anisotropic heat sink includes a plurality of spaced conductor rods of a preselected cross-sectional area and length. The conductor rods are grown on t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.