The purpose of this study is to reduce false detection.Equipped with a housingA detector for detecting an object in the casing isThe first light source which emits infrared rays in the enclosureA second light source which emits light having a wavelength different from that of infrared rays in the enclosureLocated within the enclosureA reflective portion having a higher reflectance of light than the inner surface of the casingInfrared detector for detecting infrared raysAn output section for outputting detection information which is information indicating the detection result of the photodetector is provided.The inner surface is a reflectance which does not react to infrared rays.Diagram【課題】誤検出を低減することを目的とする。【解決手段】筐体を備え、前記筐体内の物体を検出する検出装置は、前記筐体内に赤外線を出射する第一光源と、前記筐体内に赤外線と異なる波長の光を出射する第二光源と、前記筐体内に位置し、前記筐体の内面よりも高い光の反射率を有する反射部と、赤外線を検出する光検出部と、前記光検出部の検出結果を示す情報である検出情報を出力する出力部とを備え、前記内面が赤外線に反応しない反射率である。【選択図】図５
