| 摘要 |
PROBLEM TO BE SOLVED: To make distinguishable even between persons having very similar iris-prints. SOLUTION: This device is equipped with a light source 210 for irradiating an eyeball 220, changing light intensity, an imaging element 212 for picking up the image of an iris when irradiated by the light source 210, an iris table in which images of the iris corresponding to each light intensity of the light source 210 are recorded, and a comparison part 212 for comparing the image imaged by the imaging element 212 with the images recorded in the iris table. |
