It is an object of the present invention to provide a technique for measuring the lipid concentration in blood more accurately. When calculating the scattering coefficient, it is determined whether or not the detection light is transmitted through the blood, and the problem is solved by calculating the scattering coefficient of the light determined to be transmitted through the blood. Specifically, a non-invasive living body lipid measuring device that measures lipids in blood in a living body, and an irradiation unit that emits light at a predetermined light intensity from outside the living body to the living body, and from the irradiation unit A light intensity detector that detects the intensity of light emitted from the living body after being scattered in the living body, and light scattering in the living body based on the light intensity detected by the light intensity detecting unit A scattering coefficient calculation unit that calculates a coefficient； and a lipid concentration calculation unit that calculates a lipid concentration based on the calculated scattering coefficient, wherein the scattering coefficient calculation unit is detected by the light intensity detection unit. A non-invasive biolipid measuring instrument that determines whether light intensity is transmitted through blood in the living body and calculates a scattering coefficient of light determined to be transmitted through blood in the living body. is there.血中の脂質濃度をより精度よく測定する技術を提供することを課題とする。散乱係数を算出する際に、検出光が血中を透過しているか否かを判別し、血中を透過したと判別された光の散乱係数を算出することで課題を解決する。具体的には、生体内における血液中の脂質を計測する非侵襲型生体脂質計測器であって、生体外から生体内に向けて所定の光強度で光を照射する照射部と、照射部からの照射光が生体内での散乱を経て、前記生体から放出される光強度を検出する光強度検出部と、前記光強度検出部により検出された前記光強度に基づき前記生体内における光の散乱係数を算出する散乱係数算出部と、前記算出された散乱係数に基づき脂質濃度を算出する脂質濃度算出部と、を有し、前記散乱係数算出部は、前記光強度検出部により検出された前記光強度が、前記生体内の血中を透過しているか否かを判別し、前記生体内の血中を透過したと判別された光の散乱係数を算出する、非侵襲型生体脂質計測器である。
