PROBLEM TO BE SOLVED: To provide an optical sensor capable of accurately measuring information relating to the inside of a subject.SOLUTION: The optical sensor comprises: an irradiation system which comprises plural light source modules LM (light irradiation devices) for irradiating a subject (a living body, for example) with light and a detection system which detects light emitted from the irradiation system and propagated within the subject. The light source modules LM are capable of irradiating the generally identical position of the subject with plural light beams different in wavelength. In this case, the information relating to the inside of the subject can be measured accurately.SELECTED DRAWING: Figure 19COPYRIGHT: (C)2016,JPO&INPIT【課題】被検体内の情報を精度良く計測することができる光学センサを提供する。【解決手段】光学センサは、被検体(例えば生体)に光を照射する光源モジュールLM(光照射器)を複数含む照射系と、該照射系から照射され被検体内を伝播した光を検出する検出系と、を備え、光源モジュールLMは、波長が異なる複数の光を被検体の略同一位置に照射可能である。この場合、被検体内の情報を精度良く計測することができる光学センサを提供できる。【選択図】図19
