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:
Dec. 18, 2012
Filed:
Apr. 03, 2008
Kenji Yamamoto, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Kenji Yamamoto, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A low-profile biometrics authentication system capable of achieving high security level authentication is provided. A biometrics authentication systemincludes a light source, a light guide sectionA, a diffraction sectionB, a microlens array, an image pickup device, an image processing section, a pattern storing section, an authentication section, a voltage supply section, a light source driving section, an image pickup device driving sectionand a control section. When light Lemitted from the light sourcepropagates through the light guide sectionA by total reflection, and then enters the diffraction sectionB, light Ldiffracted at a different angle from an incident angle is generated. Thereby, the light guide sectionA functions as a surface-emitting light source, and total reflection conditions in the light guide sectionA are not satisfied, and the light Lis guided to the outside of the light guide sectionA, thereby light is sufficiently applied to the inside of the living body