PROBLEM TO BE SOLVED: To provide a finger vein authentication device for performing authentication processing, without having to prepare an exclusive finger vein authentication device for finger of a child who is small in height and thin which is different from those for the fingers of an adult.SOLUTION: The finger vein authentication device is provided with an intermediate guide 201 installed between a front guide 102 and a rear guide 301 an LED 101 for irradiating the finger with the rays of light a camera 103 for acquiring the vein pattern of the finger by irradiating the finger with the rays of light from the LED 101 and a control controller 106 for determining whether the finger belongs to an adult or a child based on information extracted from the vein pattern of the finger, and for adjusting the light quantity of the LED 101 based on the determination result, and for performing finger vein authentication processing.COPYRIGHT: (C)2011,JPO&INPIT【課題】指が短く細い子供の指でも大人と分けて別な専用の指静脈認証装置を準備することなく、認証処理を行うことができる指静脈認証装置を提供する。【解決手段】前ガイド102と後ガイド301との間に設けられた中間ガイド201と、指に光を照射するLED101と、LED101からの光の照射による指の静脈パターンを取得するカメラ103と、指の静脈パターンから抽出された情報に基づいて、大人の指か子供の指かを判定し、その判定結果に基づいて、LED101の光量を調整して、指静脈認証処理を行う制御コントローラ106とを備えた。【選択図】図1
