PROBLEM TO BE SOLVED: To accurately measure the concentration of a target component without depending on the thickness of a measuring target by solving the problem that the concentration of the target component cannot be accurately measured only by the correction due to a temperature difference because a concentration error is largely changed by the thickness of the part to be inspected of a living body in the case where the part to be inspected of the living body is thin.SOLUTION: A component concentration measuring instrument 170 is provided with a calibration specimen 175 the absorbance of which is equal to that of the liquid in the solution present in the part 110 to be inspected of the living body and characterized in that the absorbance of the lights outputted from first and second light sources 101 and 105 by the liquid are made equal to each other using the calibration specimen 175.COPYRIGHT: (C)2009,JPO&INPIT【課題】生体被検部の厚さが薄い場合、濃度誤差が生体被検部の厚みによって大きく変化する。このため、温度差による補正だけでは、対象成分の濃度を正確に測定することができなかった。本発明は、被測定物の厚さに依存することなく対象成分の濃度を正しく測定することを目的とする。【解決手段】そこで、本発明に係る成分濃度測定装置170は、生体被検部110に存在する溶液中の液体と吸光度の等しい校正用検体175を設け、校正用検体175を用いて第1の光源101及び第2の光源105の出力する光の液体での吸光度を等しくすることを特徴とする。【選択図】図20
