VEHICULAR REFLECTIVE OPTICAL SENSOR

摘要

The purpose of this invention is to provide a vehicular reflective optical sensor whereby detection precision can be increased. Said vehicular reflective optical sensor is provided with a control unit (6) that: emits pulses of detection light (2) from an exterior panel of a vehicle towards a detection region (1) set outside said vehicle; and, if the amount of reflected light (3) from the detection region (1) exceeds a prescribed detection threshold, detects that a detection target (4) has entered the detection region (1). To determine whether the threshold has been exceeded, for each detection interval consisting of a pulse group comprising an appropriate number of pulses, the control unit (6) compares the detection threshold to the difference between the total amount of light received by a light-receiving unit (5) when light was being emitted and the total amount of light received by said light-receiving unit (5) when light was not being emitted.