The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2012
Filed:
Oct. 03, 2008
Shingo Yokoyama, Hitachinaka, JP;
Tadayuki Abe, Ichinoseki, JP;
Hiromi Sugo, Kanegasaki, JP;
Kyoichi Takahashi, Fujisawa, JP;
Shoichi Sato, Ebina, JP;
Soichi Sakurai, Yokohama, JP;
Shingo Yokoyama, Hitachinaka, JP;
Tadayuki Abe, Ichinoseki, JP;
Hiromi Sugo, Kanegasaki, JP;
Kyoichi Takahashi, Fujisawa, JP;
Shoichi Sato, Ebina, JP;
Soichi Sakurai, Yokohama, JP;
Hitachi Media Electronics Co., Ltd., Iwate, JP;
Abstract
There is a need for providing a finger vein image inputting device that can miniaturize and thin a finger vein authentication apparatus and provide high authentication accuracy. The finger vein image inputting device according to the present invention includes a body, a band pass filter for transmitting only light of a specific wavelength, a light source for applying light to a finger placed over the band pass filter, and an imaging means for imaging transmitted light from the finger. A gradient index lens is provided between the band pass filter and the imaging means and causes refractive-index distribution around an optical axis. A polarizing filter is provided at least one of between the light source and the finger and between the finger and an imaging device.