The present invention comprises a prism body, and the imaging unit, and a visible light source for irradiating visible light to a living body, the prism body, the living body contact surface that contacts the living body in contact with the living body contact surface, the imaging unit an imaging surface side, opposite to the imaging surface, in contact with the living body contact surface forms an angle at which the critical angle or less with respect to light incident from the concave portion of the living body, the incident light from the convex portion of the living body imaging surface a first reflecting surface reflector for reflecting is formed, faces the imaging surface, in contact with the first reflecting surface, the imaging surface and the incident light from the incident light and the convex portion of the living body from the recess of the living body and a second reflecting surface reflector for reflecting is formed, the imaging unit is transmitted through the imaging surface, and the light of the convex portion of the living body which has been reflected by the first reflecting surface, a second reflecting surface an authentication device for capturing the light from the convex portion of the light and the biological from the recess of the reflected bio by.本発明は、プリズム体と、撮像部と、生体に可視光を照射する可視光源とを有し、プリズム体は、生体と接触する生体接触面と、生体接触面と接し、撮像部側の撮像面と、撮像面と対向し、生体接触面と接して生体の凹部からの入射光に対して臨界角度以下になる角度を成し、生体の凸部からの入射光を撮像面に反射する反射体が形成された第1の反射面と、撮像面と対向し、第1の反射面と接し、生体の凹部からの入射光と生体の凸部からの入射光とを撮像面に反射する反射体が形成された第2の反射面とを備え、撮像部は、撮像面を透過する、第1の反射面により反射された前記生体の凸部の光と、第2の反射面により反射された生体の凹部からの光及び生体の凸部からの光とを撮像する認証装置である。
