PROBLEM TO BE SOLVED: To provide an imaging device capable of imaging an image with less effect of a light source.SOLUTION: An imaging device includes a prism body, an imaging part, and a visible light source for radiating visible light to a living body. The prism body is generally trapezoidal, and is formed in sectorial shape on at least one side surface from a living body authentication surface where an authentication portion of the living body is set toward an imaging surface that is parallel to the living body authentication surface, including a reflection surface which is a side surface not facing the side surface on the sectorial side, totally reflecting the light reflected on the living body authentication surface toward the imaging surface. The visible light source is arranged at a lower part of the imaging surface, being near a side on the sectorial side of the imaging surface. The imaging part is arranged at the lower part of the imaging surface, and images a living body reflection light which is the light emitted from the visible light source and reflected on an authentication portion of a living body contacting to the living body authentication surface, and a reflection surface reflection light which means the living body reflection light reflected on the reflection surface.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】光源の影響少ない画像を撮像することができる撮像装置を提供すること。【解決手段】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する撮像装置である。プリズム体は、概台形状であり、生体の認証部分が設置される生体認証面から、生体認証面と平行な撮像面の方向に向かって、少なくとも一側面において末広がりの形状に形成されており、末広がり側の側面と対向しない側面であり、生体認証面で反射した光を前記撮像面に向けて全反射する反射面を有する。可視光源は、撮像面の下部、かつ、撮像面の末広がり側の辺の近傍に配置される。撮像部は、撮像面の下部に配置され、可視光源から照射された光が生体認証面に接触している生体の認証部分に反射された生体反射光と、生体反射光が反射面に反射された反射面反射光とを撮像する。【選択図】図3
