Thermopile type detector with temperature sensor for cold junction
US4456919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1981 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Dec 16, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermopile type detector which is constituted by an electrically insulating film, a thermopile supported on the film, a semiconductor substrate supporting the film, and a temperature sensing element on the surface of the substrate on which the film is supported and in the neighborhood of a cold junction of the thermopile. The temperature on the substrate immediately adjacent a cold junction of the thermopile can be measured for use in compensating the output of the thermopile for the changes in temperature of the cold junction. The temperature sensing element can be a semiconductor material such as a diode or a transistor forming a semiconductor with the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.