The optical measuring device capable of accurately measuring the degree of light absorption in the deep tissues of fruit such as a human body to correct the influence of superficial structure, optical detection method, and storage medium storing an optical measurement program are disclosed is. And a probe with two photodiodes and one light-emitting diode, optical measuring device is configured as follows. Deep and detection light by the photodiode of the one is a light of light passing through the deep and shallow organization among the light from the light emitting diode is received by the photodiode of the one passed through the deep and shallow organization Light having different pass distance is received by the other photodiode. The controller calculates the propagation constant in the medium the light is propagating based on the light intensity of light received by each photodiode. Select the calculation formula corresponding to the fat thickness of the tissue being entered, to determine the absorption coefficient of light in the muscle tissue by the calculation formula based on a spatial gradient and fat thickness. Based on the absorption coefficient of light obtained, to determine the oxygen saturation and hemoglobin concentration.浅層組織の影響などを補正して人体や果物等の深層組織の光の吸収度合いを正確に測定可能な光学的測定装置、光学的測定方法、及び光学的測定プログラムを格納した記憶媒体が開示される。光学的測定装置は、1つの発光ダイオードと2つのフォトダイオードを備えたプローブを有し、以下のように構成される。発光ダイオードからの光のうち組織の浅層及び深層を通過した光が一方のフォトダイオードで受光され、組織の浅層及び深層を通過した光であり前記一方のフォトダイオードでの検出光とは深層の通過距離の異なる光が他方のフォトダイードで受光される。制御部が、各フォトダイオードで受光した光の光強度に基づいて光が伝搬する媒体中の伝搬定数を算出する。入力された組織の脂肪厚に対応する演算式を選択して、脂肪厚及び空間的傾きに基き演算式により筋組織の光の吸収係数を求める。求めた光の吸収係数に基づいて、ヘモグロビン濃度や酸素飽和度を求める。
