| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sensor unit, a light position detection device and a light position detection system capable of detecting rotation angle of a receiving sensor when a transmitter emits a light beam.SOLUTION: The sensor unit comprises: a sensor unit which has plural first photosensors 10 disposed therein to detect the intensity of an emitted light beam 20; and a calculation unit 11 that calculates the rotation angle of the light beam 20 by using the detected light intensity and the position of a first photosensor 10 which detects the light intensity. The plural first photosensors 10 are disposed in a circular shape in the sensor unit.</p> |
