Display device of focal angle and focal distance in iris recognition system

• US 20020130961A1
• Filed: 03/14/2002
• Published: 09/19/2002
• Est. Priority Date: 03/15/2001
• Status: Active Grant

• Current Assignee: Iris Id
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Won Hee, Chae, Jang Jin, Yang, Ae Kyung
• Granted Patent: US 7,271,839 B2
• Time in Patent Office: Days
• US Class Current: 348/333.03
• CPC Class Codes: G06V 40/18 Eye characteristics, e.g. of the iris
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition

Abstract

The present invention relates to a display device of a focal angle and distance in an iris recognition system, in which the device includes: a distance measurer for measuring a distance between a user and an iris recognition camera, and an indicator for quantitatively indicating a forward-backward distance and a right and left or up and down direction the user should move, in accordance with the distance measured by the distance measurer.

Claims

1. A display device of a focal angle and distance in an iris recognition system, the device comprising:

a distance measurer for measuring a distance between a user and an iris recognition camera, and

an indicator for quantitatively indicating a forward-backward distance and a right and left or up and down direction the user should move, in accordance with the distance measured by the distance measurer.

2. The device of claim 1, wherein the indicator indicates the moving direction and distance from the iris recognition camera.

3. The device of claim 1, wherein the indicator is formed at an outside of the iris recognition device that is close to the iris recognition camera, and indicates the moving direction and distance from a position in a watch of the user.

4. The device of claim 1, wherein the indicator indicates the moving direction and distance the user should move by dividing the direction and distance into at least two levels.

5. The device of claim 1, wherein the indicator is a light emitting diode (LED) with at least two arrays and/or shapes and/or sizes that output lights having different intensities and/or colors, in order to distinguish the moving distance from the direction.

6. A display device of a focal angle and distance in an iris recognition system, the device comprising:

a distance measurer for measuring a distance between a user and a camera;

an iris recognition camera for obtaining image information for iris recognition of the user;

a light emitter for optically indicating a moving direction and a moving distance to the user, in accordance with a measurement result of the distance measurer by transmitting the light through the iris recognition camera lens; and

a light optics for guiding the moving direction and the moving distance indication light by the light emitter to be distinguished from a optical path for iris recognition.

7. The device of claim 6, wherein a light optics is a hot mirror, which reflects infrared rays and transmits visible rays, enabling the light emitted from the light emitter to transmit the iris recognition camera lens and to be projected to the user.

8. The device of claim 6, wherein the light emitter further comprises:

a central light emitting diode (LED) formed at a center; and

at least one light emitting diode, being formed at an outside of the central LED, for displaying a distance between a user and a camera.

9. The device of claim 6, wherein the light emitter further comprises:

an angle displaying visible ray for adjusting a focal angle; and

at least one distance indication light emitting diode, which is formed at a central part of the angle displaying visible ray.

10. The device of claim 6, further comprising an infrared ray filter, which transmits the light emitted from the light emitter towards a camera lens direction, and plays a role as an iris diaphragm against a camera light for recognizing an iris of a user.

11. The device of claim 10, wherein the infrared ray filter is mounted at a front or rear side on an optical path of the iris recognition camera lens.

12. The device of claim 10, wherein the infrared ray filter coats the front or rear side of the iris recognition camera.

15. The device of claim 14, wherein an infrared ray is preferably used for the illumination device.

16. The device of claim 14, wherein a light optics is a hot mirror.

17. The device of claim 14, wherein the light emitter is located at a rear side of a light optics.

18. The device of claim 14, wherein the light emitter, being located at a lower part of a light optics, further comprises a light transmitting matter for guiding a light that is outputted from the light emitter to transmit the rear side of the optical processor, to transmit the lens, and to be projected at the end.

19. The device of claim 14, wherein the light emitter is a light emitting diode.

13. A display device of a focal angle and distance in an iris recognition system, the device comprising an indicator for indicating, from an inside of outside of an iris recognition camera, a forward-backward distance and a right and left or up and down direction a user should move in accordance with a distance measured by a distance measurer, in order to adjust the focal angle of the camera.

14. A display device of an focal angle and distance in an iris recognition system, the device comprising:

an illumination device;

an iris recognition camera for acquiring user images including an iris image of the user through an irradiation from the illumination device;

a light emitter for indicating a focal angle to the user; and

a light optics for guiding the user to the focal angle through sharpness of a visible ray that is dependent on the focal angle, by transmitting the visible ray irradiated from the light emitter onto the user and by reflecting an image of the user.