PROBLEM TO BE SOLVED: To inexpensively uniformize photographing conditions for every authentication in which identify cannot be guaranteed by a conventional technology, in an operation system without burdening a user.SOLUTION: The authentication device comprises a guide means of a pattern, molding, or the like allowing a user to recall a part to place a finger or to bring it close. In the guide means, a contact point means such as a button switch is provided on a part to place a fingertip, and an optical opening part is provided in a part to place an imaged part for authentication. The authentication device further comprises a light source for irradiating the imaged part with near infrared light an imaging means for photographing an image formed by the near infrared light transmitted through the imaged part a starting means for starting authentication when a contact point is connected by the contact point means and a shielding means for shielding external light intruding into the imaging means.COPYRIGHT: (C)2009,JPO&INPIT【課題】 従来の技術では同一性が保証できなかった、認証ごとの撮影条件を、ユーザにとって負担のない操作体系の中で低コストに均一化させることにある。【解決手段】 上記の目的を達成するため、認証装置において、指を置くか、もしくは近づけるべき部位をユーザに想起させる模様もしくは造形等のガイド手段と、該ガイド手段では、指先を置くべき部位にボタンスイッチ等の接点手段を、認証のための被撮像部分を置くべき部位に光学上の開口部を設け、該被撮像部分に近赤外光を照射する光源と、該開口部を通して、該被撮像部分を透過した近赤外光が成す画像を撮影するための撮像手段とを設ける。また、該接点手段により、接点が接続された場合に認証を開始する起動手段と、該撮像手段に侵入する外光を遮断する遮蔽手段を設ける。【選択図】 図1
