PROBLEM TO BE SOLVED: To provide an information processor that is thinner and simply structured for obtaining a clear vein pattern image, and provide a biometric authentication apparatus to which the information processor is applied.SOLUTION: A biometric authentication apparatus includes a light source, a lighting device, an imaging device, a scatter and transmission variable device that is installed on a light path from the light source to an imaging element and can switch between scatter and transmission by voltage application, a recording device, and an arithmetic device.COPYRIGHT: (C)2012,JPO&INPIT【課題】鮮明な静脈パターン画像を得るための、より薄く、簡易な構成の情報処理装置の提供および、それを適用した生体認証装置を提供する。【解決手段】光源と、採光装置と、撮像装置と、前記光源から前記撮像素子に至る光路上に設置されて、電圧印加によって散乱と透過とを切り替えられる散乱透過可変装置と、記録装置と、演算装置と、を備える。【選択図】図1
