Pyroelectric-type infrared detector and integrated circuit
US11796387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2020 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Nov 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a pyroelectric infrared detector in which a pyroelectric element and an integrated circuit performing processing of a detection signal from the pyroelectric element are housed in a package, the integrated circuit includes: a converter that performs analog-to-digital conversion of the detection signal; a signal processor that performs signal processing by a digital filter for the detection signal after the conversion; and an input-output controller that delivers the output data from the signal processor to an external device via serial data communication. A cut-off frequency of the digital filter is settable and changeable by voltage application to the integrated circuit or by a command supplied from the external device via the serial data communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.