Importance

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Abstract

To calculate a regular-discharge probability of an optical sensor, a light detection system includes an optical sensor, an application voltage generating circuit that applies a drive pulse voltage to the optical sensor, a discharge determining portion that detects the optical sensor's discharge, a discharge probability calculating portion that calculates a discharge probability in a first state in which light from an additional light source having a known light quantity is incident on the optical sensor or the additional light source is turned off, and in a second state in which the additional light source's turning-on/turning-off state is different from the first state with a pulse width of the drive pulse voltage the same as the first state, a sensitivity parameter storing portion that stores sensitivity parameters of the optical sensor, and another discharge probability calculating portion that calculates a discharge probability of the optical sensor's regular discharge.

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First Claim