| abstract |
A fluorescent substance present only in the epidermis and dermis is quantified. An irradiation unit that irradiates a living body with excitation light guided from an excitation light source, a fluorescence spectrum measurement unit that measures a fluorescence spectrum related to fluorescence generated by the irradiation of excitation light, and irradiation of excitation light to the living body. And an angle changing mechanism for changing the angle. [Selection] Figure 1 |