Societe Francaise De Detecteurs Infrarouges-sofradir

Lynred

Alexandre Maltere

Laurent Rubaldo

Laurent Baud

The multispectral detection device comprises first and second photodetectors sensitive to two different wavelengths. The two photodetectors are connected to two integration capacitors of two different readout circuits. Two reset circuits are configured so as to initialise the two integration capacitors separately. A first synchronisation circuit is connected to the first readout circuit and to the synchronisation signal and clock signal generators. The first synchronisation circuit is configured in such a way as to

Multispectral detection device

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.

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Saint-Egreve, France

Alexandre Maltere