PROBLEM TO BE SOLVED: To make a personal identification device, which uses the information of a subject inside a living body, small in size and thin in thickness, to prevent a processing for the subject from becoming complex, and makes it less apt to be affected by the fluctuations of the subject distance due to the personal difference or the like of skin thickness.SOLUTION: A blood vessel 2 inside the finger 1 is imaged by an imaging element 6 as a compound-eye image via an imaging optical system including a lens eye 3 and a shielding member 6. Preprocessing for removing the shadow region of the shielding member 6 is operated to the imaged compound eye image by a preprocessing part 101. When personal data are to be registered, the preprocessed compound-eye image is stored in a registration data storage part 104 by a registration processing part 103. At authentication of personal identification, personal authentication is performed, by collating the preprocessed compound-eye image with the registration data in an identification processing part 105.COPYRIGHT: (C)2009,JPO&INPIT【課題】生体内部の被写体の情報を利用する個人認証装置の小型薄型化を図り、被写体像に対する処理の複雑化を防止し、皮膚厚さの個人差等による被写体距離の変動の影響を受けにくくする。【解決手段】レンズアレイ3及び遮光部材6を含む撮像光学系を介し、指1の内部の血管2が複眼像として撮像素子6により撮像される。撮像された複眼像は、前処理部101で遮光部材6の影領域を除去する前処理を施される。個人データ登録時には、前処理後の複眼像が登録処理部103により登録データ記憶部104に記憶される。個人認証時には、認証処理部105において、前処理後の複眼像と登録データとの照合により個人認証が行われる。【選択図】図1
