PURPOSE: To improve the resolution of an image pickup, to shorten the collation processing time and to obtain an individual collating device having a high performance, by moving an image pickup element for detecting a pattern, so as to be opposed to pattern information from an object to be inspected.
CONSTITUTION: When an illuminating light 8 is irradiated and a finger 6 is made to abut on a detector 21 by a suitable pressing force, an image pickup element 9' photographs the reduced image of the detector 21. Next, a CPU 25 calculates the abutting position of the finger 6 in the reduced image, moves a stage 11 so that the image pickup element 9' is opposed to the calculated position, that is to say, an image pickup element 9 is positioned on the same axis as a scattered light 8a. As a result, the image pickup element 9 photographs the fingerprint pattern of an unmagnification image and a collating circuit 3 which has collated an image pickup pattern and a pattern registered in a collating dictionary forms collating information.
IGAKI SEIGO
YAMAGISHI FUMIO
IKEDA HIROYUKI
INAGAKI YUSHI
