PROBLEM TO BE SOLVED: To measure component concentrations such as blood glucose concentration with high accuracy.SOLUTION: A component concentration measuring method executes: a first measurement step (S1) of irradiating an object to be measured having M pieces (M is an integer ≥2) of unknown parameters composed of concentrations Ca, Cb, Cc, ... of (M-1) pieces of components and a temperature T with light using one of n pieces (n is an integer satisfying (n(n-1)/2+1)>=M) of light irradiation units having wavelengths different from each other, and obtaining a measurement result by a frequency shift (FS) method a second measurement step (S2) of irradiating the object to be measured with the light using all the combinations of the selectable two light irradiation units, and obtaining a measurement result by an optical power balance shift (OPBS) method and a concentration deriving step (S3) of determining the concentration of the component of a measurement object in the object to be measured using the measurement result in the first measurement step and the measurement result in the second measurement step.COPYRIGHT: (C)2013,JPO&INPIT【課題】血液グルコース濃度等の成分濃度を高い精度で測定する。【解決手段】(M-1)個の成分の濃度Ca,Cb,Cc,・・・と温度TとからなるM個(Mは2以上の整数)の未知パラメータを有する被測定物に対して、互いに波長が異なるn個(nは(n(n-1)/2+1)>=Mを満たす整数)の光照射手段のうちの1つを用いて光を照射し、周波数シフト(FS)法により測定結果を得る第1の測定ステップ(S1)と、選択し得る2つの光照射手段の全ての組み合わせを用いて被測定物に対して光を照射し、光パワーバランスシフト(OPBS)法により測定結果を得る第2の測定ステップ(S2)と、第1の測定ステップの測定結果と第2の測定ステップの測定結果とから被測定物中の測定対象の成分の濃度を決定する濃度導出ステップ(S3)とを実行する。【選択図】 図5
