×

Small reliable image input apparatus incorporated in finger-print collation system of personal identification

  • US 6,011,860 A
  • Filed: 02/09/1998
  • Issued: 01/04/2000
  • Est. Priority Date: 02/12/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. 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; and

    a case for accommodating said transparent optical plate, said light source, said image pickup device and said image forming mean.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×