Display device of focal angle and focal distance in iris recognition system
First Claim
Patent Images
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 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 an 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 an optical path for iris recognition;
wherein the light of the light emitter illuminates and transmits at a first side of the light optics and iris recognition camera photographs the iris image reflected from a second side of the light optics.
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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.
46 Citations
23 Claims
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1. A display device of a focal angle and distance in an iris recognition system, the device comprising:
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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 an 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 an optical path for iris recognition; wherein the light of the light emitter illuminates and transmits at a first side of the light optics and iris recognition camera photographs the iris image reflected from a second side of the light optics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. A display device of a focal angle and distance in an iris recognition system, the device comprising a plurality of light emitting diodes (LEDs) for indicating a forward-backward distance and a right and left and 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, wherein at least one of the light emitting diodes is turned on at a different position according to the distance measured by the distance measurer.
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16. A display device of a focal angle and distance in an iris recognition system, the device comprising:
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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 optimal focal angle sharpness of a visible ray that is dependent on the focal angle, wherein the light optics transmits the visible ray irradiated from the light emitter onto the user and reflects an image of the user. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification