Detector
US9134180B2 · kind B2 · utility
7Cited by
36References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2007 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/063
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector comprises a housing (1), a pyroelectric array sensor (2) mounted within the housing, a heater (4) associated with the pyroelectric array sensor, and control means (6) for varying the power supplied to the heater to control the temperature of the pyroelectric array sensor relative to the ambient temperature in order to minimise the rate of change of temperature of the pyroelectric array sensor and to keep a predetermined difference between the temperature of the pyroelectric array sensor and the ambient temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.