SENSOR DEVICE AND MEASUREMENT METHOD

This sensor device for measuring the distance to an object is provided with: a light projection unit that repeatedly emits detection light toward the object; a light reception unit that receives reflected light of the detection light, and outputs a binarized light reception signal; a projection light oscillation unit that controls emission of the detection light, and outputs a start signal synchronized with the emission of the detection light; a count measurement unit that starts counting of the light reception signal after reception of the light reception signal and the start signal, and outputs a stop signal corresponding to a feature point of the light reception signal; a delay line measurement unit that outputs a delay line output signal corresponding to the delay time of the light reception signal near the feature point of the light reception signal after reception of the light reception signal and the stop signal; and a distance calculating unit that calculates the distance to the object on the basis of the delay line output signal.