PROBLEM TO BE SOLVED: To provide a compact and high-accuracy downward irradiation type finger vein authentication device by providing a configuration for stabilizing a finger and preventing adverse effects by right and left fingers.SOLUTION: The finger vein authentication device includes: a central finger placing base 26 for making the finger of an authentication target be placed light sources 3 for irradiating infrared light onto the finger an imaging part 4 for imaging a vein image of the finger by the light from the light sources 3 an opening part 20 for opening in an imaging direction of the imaging part 4 a storage device 14 for storing bioinformation of the finger an authentication processing part 10 for performing characteristic extraction from the image captured by the imaging part 4 and characteristic collation with the bioinformation stored in the storage device 14 and right and left finger placing bases 27, 28 on which the right and left fingers of the finger of the authentication target are placed. The right and left finger placing bases 27, 28 are installed in a little high level to the central finger placing base 26. The right and left finger placing bases 27, 28 are each formed of a light shielding member, and the light sources 3 are installed below them.COPYRIGHT: (C)2010,JPO&INPIT【課題】指を安定させるための構成を設け、さらに、左右指による悪影響を防ぐことで、小型かつ高精度な下方照射方式の指静脈認証装置を実現する。【解決手段】認証対象の指を載置させる中央指置き台26と、指へ赤外光を照射する光源3と、光源3からの光による指の静脈画像を撮像する撮像部4と、撮像部4の撮像方向に開口する開口部20と、指の生体情報を保存する記憶装置14と、撮像部4によって撮像された画像からの特徴抽出と記憶装置14に保存された生体情報との特徴照合を行う認証処理部10と、認証対象の指の左右の指を載置する左右指置き台27、28を備える。この左右指置き台27、28は、中央指置き台26に対してやや高い位置に設置する。さらに、この左右指置き台27、28は遮光部材で作成され、その下部に光源3が設置される。【選択図】図1
