Pyroelectric thermal sensor
US4741626A · kind A · utility
12Cited by
12References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Nov 5, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pyroelectric thermal sensor for measuring the surface temperature of an object on a non-contact basis using the signals produced by a pyroelectric element and a reference thermal sensor is operative to reduce the level of the output signal from the pyroelectric element proportionally by switching an interruptive time for interrupting a heat ray incident to the pyroelectric element when the output of an amplifier for amplifying the pyroelectric element signal approaches the state of saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.