PROBLEM TO BE SOLVED: To provide a finger vein image pick-up method and control method applicable to a slim apparatus such as smart phone.SOLUTION: A finger vein authentication device includes: an imaging part； an illumination part which is disposed on a plane generally identical to the imaging part to irradiate a beam of light, the irradiation angle of which is variable, to a finger to be picked by the imaging part； an image selection section that selects an image corresponding to the irradiation angle by the illumination part and an authentication processing part that executes a series of authentication processing using the image selected by the image selection section.SELECTED DRAWING: Figure 1【課題】スマートフォン等の薄型機器へ適応可能な指静脈画像の撮影方法および制御方法を提供する。【解決手段】指静脈認証装置は、撮像部と、撮像部と略同一平面上に配置され、撮像部により撮像される指に照射角度が可変な光を照射する照明部と、照明部の照射角度に応じた画像を選択する画像選択部と、画像選択部により選択された画像を用いて認証処理を行う認証処理部と、を有する。【選択図】図１
