Radiation detection device with improved illumination range having a photodetector that operates in two detecting modes
US9116040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pixel comprises a photodetector and a control circuit. The pixel is provided with an output terminal designed to connect an analysis circuit. The photodetector is configured to have two different operating modes associated with different biasing conditions. A switch connecting the photodetector to the output terminal of the pixel and a circuit for a connecting/disconnecting the control circuit with the output terminal of the pixel and with the photodetector allow to switch between the two operating modes. A comparator compares the voltage across the capacitive load with respect to a threshold value and outputs first and second signals according to the comparison. The comparator is connected to the circuit for connecting/disconnecting the control circuit and to the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.