Joule-Thomson cryostat having a chemically-deposited infrared detector and method of manufacture
US4682032A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1986 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Jan 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/061
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared photodetector is disclosed which is deposited directly onto a Joule-Thomson cryostat. The cryostat includes an elongated body having gas-carrying channels contained therein. The photodetector is deposited directly onto one end of the elongated body to form a direct thermal path between the detector and cryostat, thereby eliminating the need for any intermediate thermal bridge such as a mechanical bond, thermal conductive paste or epoxy. The direct contact between the photodetector material and the cryostat reduces the thermal mass of the structure to be cooled by the cryostat, thereby decreasing both the time and the quantity of gas required to cool the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.