PROBLEM TO BE SOLVED: To provide a small-sized and highly precise finger vein authentication device which can be applied to a small-sized information processor such as a portable telephone and an information processor using this device.SOLUTION: This finger vein authentication device includes a light source for irradiating the finger with the rays of light an imaging element for picking up a vein image by the rays of light which are diffused in the finger and transmitted through the cushion side of the finger, and an image processing part for processing the pickup image. The light source is mounted on the cushion side of the finger so as to irradiate the side surfaces of the finger with the rays of light.COPYRIGHT: (C)2009,JPO&INPIT【解決課題】 携帯電話などの小型情報処理装置に適用できるような小型かつ高精度な指静脈認証装置およびこれを用いた情報処理装置を提供する。【解決手段】 指に向けて光を照射する光源と、前記指内にて散乱し腹側に透過した光による静脈画像を撮像する撮像素子と、前記撮像された画像を処理する画像処理部と、を備える指静脈認証装置であって、前記光源は指の腹側に設置され、指の側面に向けて光を照射する。【選択図】 図20
