Title:
An authentication device, a prism object for attestation, and an authentication method
Document Type and Number:
Japanese Patent JP6112317
Kind Code:
B2
Abstract:
A prism member of an authentication apparatus includes a living body contact surface configured to be in contact with the living body, and an imaging surface opposed to the living body contact surface and formed at a position generally parallel therewith. The prism member includes a reflection surface in contact with the living body contact surface and the imaging surface, to totally reflect light reflected from the former surface toward the latter surface. The reflection surface is at angle such that (i) light through the living body contact surface into the prism member does not reach to the reflection surface, and (ii) light from an inside of the prism member is totally reflected at the living body contact surface in an optical path running from the imaging surface and reaching the living body contact surface by way of the reflection surface. A first imaging unit captures a living-body reflected light.
Inventors:
Teruyuki Higuchi
Application Number:
JP2014559663A
Publication Date:
April 12, 2017
Filing Date:
January 27, 2014
Export Citation:
Assignee:
NEC
International Classes:
G06T1/00; A61B5/1172
Domestic Patent References:
| JP2010503079A | ||||
| JP2006065400A | ||||
| JP2010134877A |
Foreign References:
| WO2012133110A1 | ||||
| WO2013146761A1 | ||||
| WO2013146760A1 | ||||
| WO2013146759A1 |
Attorney, Agent or Firm:
Katsumi Utaka
Daigo Maejima
Junichi Hatakeyama
Daigo Maejima
Junichi Hatakeyama
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