Patent ID: 8520912
Filing Date: 2013-08-27
Classification: G06K

Abstract:
1. A fingerprint recognition device, applicable to retrieving a fingerprint image of a finger, comprising: a light guiding plate, having a first surface, a second surface, and at least one sidewall surface, wherein the first surface and the second surface are located at two opposite sides of the light guiding plate respectively, and the sidewall surface is connected between the first surface and the second surface, wherein the first surface is parallel to the second surface; a finger plate, disposed on the light guiding plate, wherein the first surface of the light guiding plate faces the finger plate and is separated from the finger plate by a distance; an imaging piece, adjacent to the second surface of the light guiding plate; and at least one light source, facing the sidewall surface of the light guiding plate, wherein the light source emits a light towards the sidewall surface and the light enters the light guiding plate, the light guided by the light guiding plate is emitted out of the first surface, so as to form a back light source of the finger plate, and the imaging piece retrieves the fingerprint image of the finger on the finger plate.