| 摘要 |
PROBLEM TO BE SOLVED: To provide a person detection device capable of detecting a person with more accuracy than conventional one.SOLUTION: A light source unit projects infrared light beams of a plurality of wavelengths onto a plurality of different irradiation regions. A light receiving unit receives reflection light beams of a plurality of wavelengths and includes one or more light receiving elements that convert the received reflection light beams into electric signals. A light source control unit controls the light source unit to project the infrared light beams sequentially onto the plurality of different irradiation regions. A detection unit detects a person on the basis of the electric signals corresponding to the reflection light beams of the plurality of wavelengths that are converted by the light receiving elements. |
