Biometrics authentication system

• US 20080253620A1
• Filed: 04/01/2008
• Published: 10/16/2008
• Est. Priority Date: 04/11/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Hashimoto, Gakuji
• Granted Patent: US 8,270,679 B2
• Time in Patent Office: Days
• US Class Current: 382/115
• CPC Class Codes: G06V 40/1312 direct reading, e.g. contactless acquisition
• CPC Class Codes: G06V 40/14 Vascular patterns

Abstract

A biometrics authentication system includes: a light source applying light to a living organism; a microlens array section condensing light from the living organism, and including a plurality of microlenses each having a different refractive power; an image pickup device obtaining image pickup data of the living organism on the basis of the light condensed by the microlens array section; a rotation angle determining section determining the rotation angle of the living organism on the basis of the image pickup data of the living organism; a three-dimensional information producing section producing three-dimensional information of the living organism on the basis of the image pickup data of the living organism; and an authentication section performing authentication on the basis of the rotation angle determined by the rotation angle determining section and the three-dimensional information produced in the three-dimensional information producing section.

Claims

1. A biometrics authentication system comprising:

a light source applying light to a living organism;

a microlens array section condensing light from the living organism, and including a plurality of microlenses each having a different refractive power;

an image pickup device obtaining image pickup data of the living organism on the basis of the light condensed by the microlens array section;

a rotation angle determining section determining the rotation angle of the living organism on the basis of the image pickup data of the living organism;

a three-dimensional information producing section producing three-dimensional information of the living organism on the basis of the image pickup data of the living organism; and

an authentication section performing authentication on the basis of the rotation angle determined by the rotation angle determining section and the three-dimensional information produced in the three-dimensional information producing section.

2. The biometrics authentication system according to claim 1, wherein

the rotation angle determining section determines the rotation angle of the living organism on the basis of image pickup data of a surface of the living organism.

3. The biometrics authentication system according to claim 2, wherein

the living organism is a finger, and

the rotation angle determining section determines the rotation angle of the living organism on the basis of the position of the core of a fingerprint.

4. The biometrics authentication system according to claim 1, further comprising:

a pattern storing section storing a three-dimensional authentication pattern of the living organism,

wherein the authentication section obtains a partial authentication pattern according to the rotation angle from the three-dimensional authentication pattern, and performs authentication by comparing the partial authentication pattern with the three-dimensional information.

5. The biometrics authentication system according to claim 1, further comprising:

a voltage supplying section supplying a voltage to the plurality of microlenses,

wherein the microlenses change their refractive powers according to the voltage supplied from the voltage supplying section.

6. The biometrics authentication system according to claim 5, wherein

the plurality of microlenses each include:

a pair of substrates;

a pair of electrodes to which the voltage from the voltage supplying section is applied, the pair of electrodes being formed on the substrates; and

a liquid crystal layer arranged between the pair of electrodes, wherein

at least one of the pair or electrodes has a curved surface for forming the microlenses.