PROBLEM TO BE SOLVED: To provide an optical sensor capable of measuring the information of an analyte accurately.SOLUTION: An optical sensor 10 includes an irradiation system having at least one light irradiator (light source module LM) for irradiating an analyte with light, and a detection system for detecting the light irradiated from the irradiation system to the analyte and propagated through the analyte. The light irradiator includes a surface emission laser element that is a part of a laminate structure having an active layer, and a photodetector that is another part of the laminate structure, and connected optically with the surface emission laser element.SELECTED DRAWING: Figure 45COPYRIGHT: (C)2017,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こと。【解決手段】 光学センサ10は、被検体に光を照射する光照射器(光源モジュールLM)を少なくとも1つ含む照射系と、該照射系から被検体に照射され該被検体内を伝播した光を検出する検出系と、を備え、光照射器は、活性層を有する積層構造体の一部である面発光レーザ素子と、積層構造体の他の一部であり、面発光レーザ素子と光学的に接続された光検出素子と、を含む。【選択図】図45
