Infrared ray sensing device
US4791299A · kind A · utility
2Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/604
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermally insulating casing accommodates an infrared ray sensing element. The casing has a window which conducts infrared ray to the sensing element. The window is covered with heat absorption gas. An infrared ray emitting element may be accommodated within the casing. The casing may have a second window which passes infrared ray generated by the emitting element. The second window may be covered with the heat absorption gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.