Abstract: The present disclosure relates to an optical sensor system including a track system, an optical sensor operably, coupled to the track system, comprising at least one emitter and at least one detector, and a controller operably coupled to the optical sensor. In this regard, the optical sensor is configured to perform measurements comprising at least one physiological parameter. Furthermore, the controller is configured to actuate the optical sensor to move the at least one emitter and/or the at least one detector along the track system to at least one preferred location based on the at least one measured physiological parameter and/or at least one user parameter.

Abstract: In a method and apparatus, a property of an optically diffuse medium including a first optical absorber having a first concentration and a second optical absorber having a second concentration is determined. A surface area of the medium is imaged at multiple wavelengths around an isosbestic wavelength of the first absorber and the second absorber. A reflectance spectrum of the medium at the surface area at the multiple wavelengths is determined. A derivative of the determined reflectance spectrum around the isosbestic wavelength is determined. From the derivative, a concentration ratio of the first concentration and the second concentration is estimated.

Abstract: In a method and apparatus, a property of an optically diffuse medium including a first optical absorber having a first concentration and a second optical absorber having a second concentration is determined. A surface area of the medium is imaged at multiple wavelengths around an isosbestic wavelength of the first absorber and the second absorber. A reflectance spectrum of the medium at the surface area at the multiple wavelengths is determined. A derivative of the determined reflectance spectrum around the isosbestic wavelength is determined. From the derivative, a concentration ratio of the first concentration and the second concentration is estimated.