Patent ID: 7947939

Claim:
An optical detection device comprising: a photodiode structure comprising a photodiode capacitance for accumulating charge carriers responsive to electromagnetic radiation; a readout capacitance; a resetter for resetting the readout capacitance by applying a predetermined voltage to the readout capacitance; a switch for connecting the photodiode structure to the readout capacitance to transfer the accumulated charge carriers to the readout capacitance during a transfer phase and for separating the photodiode structure from the readout capacitance during an accumulation phase; a readout unit for reading out the readout capacitance, the readout unit being implemented to read out the readout capacitance for a first time during the accumulation phase and for a second time after the accumulation phase for acquiring a first and second readout values and to combine the two values for acquiring a readout result; and an additional readout capacitance comprising a respective additional resetter for resetting the additional readout capacitance, and an additional switch for connecting the photodiode capacitance to the additional readout capacitance during an additional transfer phase.