PROBLEM TO BE SOLVED: To provide a compact authentication device which is highly resistant to external rays of light for freeing a user from a feeling of pressure in the case of imaging finger blood vessel patterns with the transmitting rays of light.SOLUTION: The blood vessel photographing device includes: a guide part 118 for determining a finger position a light source 114 arranged at one or both sides of the guide part for emitting transmitting rays of light which transmit the finger an imaging part 112 for imaging the transmitting rays of light and light shielding means 116 for restricting the emission area of the rays of light emitted from the light source. Further, the blood vessel photographing device includes: means for measuring the thickness of the finger and means for controlling the quantity of rays of light from the light source on the basis of the measurement results. Also, the blood vessel photographing device includes: means for recording the registered image patterns of a plurality of fingers means for collating the imaging pattern of the imaging part with the registered patterns and means for controlling different processing in accordance with the collation results.COPYRIGHT: (C)2013,JPO&INPIT【課題】本発明の目的は、透過光による指血管パターンの撮像において、ユーザにとって圧迫感がなく、外光に強いコンパクトな認証装置を実現することにある。【解決手段】指位置を決めるガイド部118と、上記ガイド部の両側または片側に設けられ上記指を通過する透過光を照射する光源114と、上記透過光を撮像する撮像部112と、上記光源から照射された光の照射領域を制限する遮光手段116とを設ける。さらに上記指の太さを計測する手段と、該測定結果をもとに上記光源の光量を制御する手段を設ける。複数の指の登録撮像パターンを記録する記録手段と、上記撮像部の撮像パターンと上記登録パターンとの照合手段と、上記照合結果に応じて異なる処理を制御する制御手段とを設ける。【選択図】 図1
