PROBLEM TO BE SOLVED: To provide a biological information detection device or the like which enables lower power consumption according to the state of sleeping.SOLUTION: The biological information detection device comprises: a first light reception unit 141 for receiving light from a subject； a second light reception unit 142 for receiving light from the subject； at least one light emission unit 150 for emitting light to the subject； and a processing unit 200. When a distance between the light emission unit 150 and the first light reception unit 141 is L1, and a distance between the light emission unit 150 and the second light reception unit 142 is L2, L1<；L2 holds true. The processing unit 200 determines an active state of the subject on the basis of a first detection signal detected by the first light reception unit 141 and a second detection signal detected by the second light reception unit 142, and controls, according to the determined active state, a first detection operation performed by the light emission unit 150 and the first light reception unit 141 and a second detection operation performed by the light emission unit 150 and the second light reception unit 142.SELECTED DRAWING: Figure 2【課題】睡眠状態に応じて低消費電力化が可能な生体情報検出装置等を提供する。【解決手段】生体情報検出装置は、被検体からの光を受光する第１の受光部１４１と、被検体からの光を受光する第２の受光部１４２と、被検体に対して光を射出する少なくとも１つの発光部１５０と、処理部２００と、を含む。発光部１５０と第１の受光部１４１との距離をＬ１とし、発光部１５０と第２の受光部１４２との距離をＬ２とした場合に、Ｌ１＜Ｌ２である。処理部２００は、第１の受光部１４１で検出された第１の検出信号と第２の受光部１４２で検出された第２の検出信号に基づいて被検体の活動状態の判定を行い、その活動状態に応じて発光部１５０及び第１の受光部１４１による第１の検出動作と発光部１５０及び第２の受光部１４２による第２の検出動作とを制御する。【選択図】図２
