Iris imaging device

摘要

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.