Patent ID: 6011860
Filing Date: 2000-01-04
Classification: A61B,G06K,G07C

Abstract:
An image input device for producing a piece of data information representative of a fingerprint of a finger of a living body, comprising:a transparent optical guide plate including a first surface having an detecting area where said living body presses said finger, and radiating a reflection representative of an image of said fingerprint from a second surface to the outside thereof;a light source attached to an incident area of a third surface of said transparent optical guide plate narrower than said detecting area, and diffusing light into said transparent optical guide in such a manner as to illuminate said detecting area;an image pickup device provided in the vicinity of said second surface, and having an incident surface so as to detect said reflection;an image forming means provided between said second surface and said image pickup device so as to form said image on said incident surface; anda case for accommodating said transparent optical plate, said light source, said image pickup device and said image forming mean.