PROBLEM TO BE SOLVED: To generate detection signals compensating differences among types of tissues where a plurality of paths different from each other is located in a measurement portion.SOLUTION: A detection device generating a first detection signal and a second detection signal used for identifying biological information, comprises: a light emitting section emitting light to a measurement portion in each of a first period and a second period repeated on a time axis； a signal generation section generating the first detection signal according to a light reception level of the light being emitted in each first period from the light emitting section and passing through a first path in the measurement portion and the second detection signal according to a light reception level of the light being emitted in each second period from the light emitting section and passing through a second path different from the first path in the measurement portion； and a control section controlling a time length of at least one of the first period and the second period such that component values of steady components individually included in the first detection signal and the second detection signal are close to each other.SELECTED DRAWING: Figure 2【課題】相異なる複数の経路が測定部位内において位置する組織の種類の違いを補償した検出信号を生成する。【解決手段】生体情報の特定に使用される第１検出信号および第２検出信号を生成する検出装置であって、時間軸上で繰り返される第１期間と第２期間との各々において測定部位に光を出射する発光部と、前記発光部から前記各第１期間に出射して前記測定部位内において第１経路を通過した前記光の受光レベルに応じた前記第１検出信号と、前記発光部から前記各第２期間に出射して前記測定部位内において前記第１経路とは相異なる第２経路を通過した前記光の受光レベルに応じた前記第２検出信号とを生成する信号生成部と、前記第１検出信号と前記第２検出信号との各々に含まれる定常成分の成分値が相互に近づくように前記第１期間および前記第２期間の少なくとも一方の時間長を制御する制御部とを具備する検出装置。【選択図】図２
