Excrement analysis device, toilet provided with said analysis device, and method for analyzing excrement

An excrement analysis device comprising:

• a light source configured to emit an inspection light;
• a reflector configured to reflect an incoming inspection light in a direction opposite to an incident direction;
• a half mirror configured to split the emitted inspection light into two inspection lights, output a first inspection light to the reflector and output a second inspection light to an inspection area in a toilet bowl, and output, as a reference light, the first inspection light reflected by the reflector and output, as a light under inspection, the second inspection light reflected from the inspection area;
• an optical path length adjuster configured to cause the reflector to move in an optical axis direction of the reference light;
• a processor configured to:
• detect an interference signal between the reference light and the light under inspection;
• acquire a reflection light intensity distribution and spectral information from the light under inspection;
• generate a three-dimensional tomographic image from the acquired reflection light intensity distribution;
• output the generated three-dimensional tomographic image and the spectral information, as three-dimensional spectroscopic information;
• extract a first space containing a largest amount of urine components and a second space containing a largest amount of fecal components from the three-dimensional spectroscopic information;
• and
• output a result of analysis of urine and feces on the basis of spectroscopic information regarding the extracted first space and second space.