HANDHELD IRIS IMAGER
First Claim
1. A portable, hand held iris imaging system comprising:
- a first subsystem configured to be electrically and physically coupled to a second subsystem, the first subsystem comprising;
an illumination source configured to illuminate a subject'"'"'s eye;
an iris camera configured to capture an image of an iris of the illuminated subject'"'"'s eye with sufficient resolution for biometric identification; and
a tunable optical element positioned between the illumination source and the iris camera, the tunable optical element comprising an adjustable focus capable of focusing light reflected from an iris of the subject onto the iris camera where the iris camera is located at a standoff distance in a range of 17.5 cm and 50 cm from the subject.
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Accused Products
Abstract
A portable, hand held iris imaging system captures iris images that may be used in biometric identification. The system is constructed using two separate but coupled subsystems. A first subsystem augments the underlying functionality of the second subsystem. The first subsystem uses an iris camera to capture iris images. A tunable optical element positioned between the subject and the iris camera focuses light reflected from the subject'"'"'s eye onto the iris camera. A controller coordinates the capture of the iris image with the second subsystem. The second subsystem captures face images of the subject, which are provided to a display through a computer. The user interface is overlaid over the face images to provide visual feedback regarding how the system can be properly repositioned to capture iris images. The system has a portable form factor so that it may be easily operated.
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Citations
21 Claims
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1. A portable, hand held iris imaging system comprising:
a first subsystem configured to be electrically and physically coupled to a second subsystem, the first subsystem comprising; an illumination source configured to illuminate a subject'"'"'s eye; an iris camera configured to capture an image of an iris of the illuminated subject'"'"'s eye with sufficient resolution for biometric identification; and a tunable optical element positioned between the illumination source and the iris camera, the tunable optical element comprising an adjustable focus capable of focusing light reflected from an iris of the subject onto the iris camera where the iris camera is located at a standoff distance in a range of 17.5 cm and 50 cm from the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable, hand held iris imaging system comprising:
a second subsystem configured to be electrically and physically coupled to a first subsystem, the second subsystem comprising; a face camera configured to capture an image of a face of a subject; a display configured to display the face image and a user interface overlaying the face image, the user interface comprising one or more guide points indicating a position of the system able to capture an iris image of the subject; and a computer configured to communicate data to the first subsystem, the data assisting in the capture of an iris image of the subject. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for capturing an iris image using a portable, hand held iris imaging system, comprising:
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capturing with a face camera a face image of a subject standing a standoff distance away from the system; overlaying over the face image a user interface comprising one or more guide points indicating a position of the system able to capture an iris image of the subject; displaying the face image and the user interface on a display; determining whether the standoff distance is within an acceptable range for iris image capture, the determination based on the alignment of the guide points and the face image; responsive to the standoff distance being within the acceptable range, adjusting a focus of a tunable optical element to focus the subject'"'"'s eyes; illuminating the subject'"'"'s eyes with an illumination source; and capturing an iris image of the subject'"'"'s eyes with sufficient resolution for biometric identification. - View Dependent Claims (20, 21)
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Specification