Patent attributes
A fingerprint sensor used for a fingerprint recognition system comprises a first prism or prism array including a first surface which a human finger is placed and a second surface; a lamp for irradiating the finger with light; a second prism or prism array for refracting the light which is reflected from the finger and subsequently passes through the second surface in such a way that the light refracted by the second prism or prism array travels along a path closer to a normal to the first surface of the first optical component than a path of light without refraction by the second prism or prism array; and an image sensor for receiving the light refracted by the second prism or prism array and converting fingerprint information for the finger into an electric signal.
