Iris imaging device
First Claim
1. An iris image pickup apparatus for picking up the iris of an object comprising:
- a wide angle camera for picking up an image of an object;
a range sensor for measuring the distance to said object;
a telephotograph camera for picking up the iris of said object based on the image picked up by said wide angle camera and the range measured by said range sensor; and
a tilt table where said telephotograph camera and said range sensor are mounted with the image pickup direction of said telephotograph camera for said iris approximately matching the range direction of said range sensor for said object, said tilt table tilting upward/downward about the tilt rotation axis;
wherein said range sensor measures the distance to said object with the tilting of said tilt table, wherein said telephotograph camera picks up said iris of said object based on the image picked up by said wide angle camera and the range measured by said range sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention aims at providing low-cost iris image pickup apparatus for picking up iris images at a high accuracy.
In this invention, a telephotograph camera (22) and a range sensor (24) are mounted on a link table (20) that tilts upward/downward. A mirror for panning (23) and the range sensor (24) can be tilted rightward/leftward by a motor for panning (26) and a link mechanism (27). The image pickup direction of the telephotograph camera (22) is reflected by the mirror for panning (23) while the range sensor (24) is given a rotation angle double that of the mirror for panning (23) by the link mechanism (27). This matches the range direction and the image pickup direction thus allowing high-accuracy ranging. Accordingly only one wide angle camera (25) is required for picking up an iris image thus reducing the cost of the iris image pickup apparatus (10). The range sensor (24) is mounted on the tilt table (20) and makes ranging while tilted upward or downward thus expanding upward and downward the range of measuring the distance to the object.
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Citations
8 Claims
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1. An iris image pickup apparatus for picking up the iris of an object comprising:
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a wide angle camera for picking up an image of an object;
a range sensor for measuring the distance to said object;
a telephotograph camera for picking up the iris of said object based on the image picked up by said wide angle camera and the range measured by said range sensor; and
a tilt table where said telephotograph camera and said range sensor are mounted with the image pickup direction of said telephotograph camera for said iris approximately matching the range direction of said range sensor for said object, said tilt table tilting upward/downward about the tilt rotation axis;
wherein said range sensor measures the distance to said object with the tilting of said tilt table, wherein said telephotograph camera picks up said iris of said object based on the image picked up by said wide angle camera and the range measured by said range sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification