PROBLEM TO BE SOLVED: To detect whether or not a persons eye is open with high accuracy.SOLUTION: An eye opening/closing determination device of an embodiment comprises: an irradiation section irradiating a first range in which a persons face is possibly present with an infrared ray when the person is seated in a vehicle seat an imaging section imaging the first range irradiated with the infrared ray by the irradiation section and a determination unit determining whether an eye of the person seated in the seat is open on the basis of whether a high luminance value which is not lower than a preset threshold and which corresponds to catoptric light from a corneal surface of the persons eye due to the infrared ray radiated by the irradiation section is included in the first range imaged by the imaging section.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】人の眼が開いているか否かを高精度で検出する。【解決手段】実施形態の開閉眼判定装置は、車両の座席に人が座った場合に、当該人の顔が存在する可能性がある第1の範囲に対して、赤外線を照射する照射部と、照射部により赤外線が照射された、第1の範囲を撮像する撮像部と、撮像部が撮像した第1の範囲に、照射部が照射した赤外線による、人の眼の角膜表面からの反射光に相当する、予め定められた閾値以上の高い輝度値が含まれているか否かに基づいて、座席に座っている人の眼が開いているか否かを判定する判定部と、を備える。【選択図】図4
