PROBLEM TO BE SOLVED: To provide an instrument for measuring optical properties of skin which instantaneously changes illumination light to be used for measuring transparency and color information on the skin to thereby measure the transparency and the color information nearly simultaneously and which relates the thus measured transparency and color information with impression of the appearance of skin and express it as an objective value.SOLUTION: The instrument for measuring the optical properties of the skin includes (A), (B) and (C): (A) an irradiating means continuously changing a condensed light and a parallel light and irradiating a skin surface with the light in non-contact way (B) a transparency measuring means to detect a reflected light of the condensed light with which the skin is irradiated and calculate an attenuation coefficient (&mueff), an absorption coefficient (&mua), or an equivalent scattering coefficient (&mus) and (C) a color measuring means to detect the reflected light of the parallel light with which the skin is irradiated and to measure the color information.COPYRIGHT: (C)2010,JPO&INPIT【課題】皮膚の透明性と色情報の計測に使用する照明光を瞬時に切り替え、透明性と色情報をほぼ同時に計測できるようにし、そのようにして計測された透明性と色情報を、皮膚外観の印象と関連づけ客観的数値として表わせるようにする計測装置を提供する。【解決手段】皮膚の光学的性状の計測装置が、(A)、(B)及び(C):(A)皮膚表面に非接触に集光光と平行光を連続的に切り替え照射することのできる照射手段、(B)皮膚に照射した集光光の反射光を検出し、減衰係数(μeff)、吸収係数(μa)又は等価散乱係数(μs)を算出する透明性計測手段、(C)皮膚に照射した平行光の反射光を検出し、色情報を計測する測色手段を備える。【選択図】図1A
