PROBLEM TO BE SOLVED: To provide a fluorescent sensor of which the lifetime can be extended.SOLUTION: The fluorescent sensor includes an indicator layer 5 containing a fluorescent substance which detects an analyte component of a living body and emits fluorescence according to the amount of the analyte component in response to irradiation with excitation light, a photo diode 3 receiving the fluorescence to output an electric signal according to the intensity of fluorescence, and a light source 6 for irradiating the indicator later 5 with the excitation light. The indicator layer 5 is disposed on the photo diode 3, and the light source 6 is configured so that the inside of the indicator layer 5 is irradiated with the excitation light emitted therefrom in a direction parallel with a light receiving surface of the photo diode 3.COPYRIGHT: (C)2015,JPO&INPIT【課題】寿命を延ばすことのできる蛍光センサーを提供する。【解決手段】生体のアナライト成分を検知して、励起光が当たることによりアナライト成分の量に応じた蛍光を発する蛍光物質を含むインジケータ層5と、蛍光を受光して蛍光の強さに応じた電気信号を出力するフォトダイオード3と、インジケータ層5へ励起光を照射する光源6とを有し、インジケータ層5はフォトダイオード6上に配置され、光源6はそこから発する励起光がフォトダイオード3の受光面に平行な方向でインジケータ層5内へ照射することを特徴とする蛍光センサー。【選択図】図1
