To provide an apparatus for irradiating excitation light to an object whose type is unknown and displaying the type of the subject from the type of fluorescence stimulated and emitted from the subject.An oral cavity garment discrimination apparatus including an LED unit 1 for irradiating excitation light 3 to a subject, a light receiving unit 7 for detecting fluorescence 5 stimulated and emitted from a subject, and a control unit, The material information including the type of the kimono and the wavelength and / or the intensity of the fluorescence 4 corresponding to the wavelength of the excitation light 3, and the control unit reads from the fluorescence 4 detected by the light receiving unit the wavelength of the fluorescence 4 And / or intensity are calculated and compared with material information to indicate the type of oral cavity garment.BACKGROUND OF THE INVENTION【課題】種別の分からない被写体に励起光を照射し、被写体から誘導放出された蛍光の種別から被写体の種別を表示する装置を提供する。【解決手段】被写体に励起光3を照射するLED部1と、被写体から誘導放出された蛍光5を検出する受光部7と、制御部とを備えた口腔内装着物判別装置であって、口腔内装着物の種別と、該励起光3の波長に対応する蛍光4の波長及び/又は強度を含む材料情報を有し、制御部が、受光部が検出した蛍光4から被写体情報である蛍光4の波長及び/又は強度を演算し、材料情報と照合し、口腔内装着物の種別を表示する。【選択図】図1
