Biometric authentication apparatus

Abstract

An apparatus acquires information on a user's finger veins for personal authentication and includes: guides which form a space to put the user's finger in and block external light to come into the space sideways; a door assembly which closes when the user's finger is not in place and opens downward by a pushing force of the user's finger when the user's finger is in place, and blocks external light from above the space; a light source section disposed on a surface of the door assembly surface for irradiating the user's finger with light; a filter located at a space bottom and having a reflective surface for reflecting external light coming into the space or light from the light source section; and an imaging unit located under the filter for taking an image of veins of the user's finger exposed to the light emitted from the light source section.

Dependencies are inferred from the claim text.