PROBLEM TO BE SOLVED: To provide an optical living body measuring apparatus with a structure that can be thinned.SOLUTION: An optical living body measuring apparatus includes a light source section LS1 with a light emitting surface LES1 emitting light entered into a living body and a light receiving surface LRS1 receiving light emitted outward the living body after the light is entered into the living body and propagated inside the living body. A light receiving surface LRS1 has a light receiving section LR1 facing in a direction along a flat surface parallel to the light emitting surface LES1 and a light guiding member IS1 that enters the light into the living body of the surface of the living body by changing a travelling direction of the light entered by the light source section, wherein the light may be emitted by the light source section to be enter the living body, and that guides the light to the light receiving surface LES1 by changing the travelling direction of the light emitted outside the living body after the light propagates in the living body.COPYRIGHT: (C)2012,JPO&INPIT【課題】薄型化が可能な構成を有する光学式生体測定装置を提供する。【解決手段】生体の内部に入射させる光を出射する発光面LES1を有する光源部LS1、生体の内部に入射され、生体の内部を伝播した後に生体の外部に出射する光を受光する受光面LRS1を有し、受光面LRS1は、発光面LES1と平行する平面に沿う方向を向く受光部LR1と、光源部が出射する光の進行方向を変化させて光を生体の表面から生体の内部に入射させ、或いは光源部が出射し、生体の内部に入射され、生体の内部を伝播した後に生体の外部に出射する光の進行方向を変化させて光を受光面LES1に導く導光部材IS1とを有する。【選択図】図3
