OPTICAL IMAGING DEVICE SUITED FOR FORMING AN IMAGE OF FINGERPRINTS

摘要

The invention relates to an optical imaging device (1) for forming an optical image of fingerprints of a finger, comprising: an optical plate (2) with a part (5) at one end (A) of a main face (3) provided for placing the finger upon; a light source (S) for illuminating the finger through the plate (2), the reflected light beam propagating with multiple reflections in the plate up to the other end (B) thereof having an inclined end face (8); a focalization lens (9) oriented toward the end face with its axis situated in the median plane of the plate, and; a mirror (10) for directing the light beam exiting the end face (8) in the axis of the lens (9).