AUTHENTICATION DEVICE, PRISM BODY FOR USE IN AUTHENTICATION, AND AUTHENTICATION METHOD

WIPO Patent Application WO/2013/146759

A1

The present invention is an authentication device that has a prism body, an imaging unit, and a visible-light light source that illuminates a body part with visible light. The prism body is provided with the following: a body-part contact surface that makes contact with the aforementioned body part; a reflecting surface that shares an edge with the body-part contact surface and reflects, via total internal reflection, light from concavities in the body part and light from convexities on the body part; and an imaging surface that faces the body-part contact surface and shares an edge with the reflecting surface. The imaging surface is provided at an angle whereby light from the body-part concavities does not reach the imaging surface but light reflected by the reflecting surface via total internal reflection and light from the body-part convexities can pass through the imaging surface. The imaging unit images the light that passes through the imaging surface, namely the light from the body-part convexities and the light, reflected by the reflecting surface, from the body-part concavities and convexities.

JP2010146320	VENDING MACHINE
WO/2001/054463	METHOD AND ARRANGEMENT RELATING TO AN X-RAY IMAGING APPARATUS
JP3761829	FINGER PRINT DETECTOR AND PRODUCTION METHOD THEREFOR

HIGUCHI TERUYUKI (JP)
IWATA TOMOOMI (JP)

PCT/JP2013/058733

October 03, 2013

March 26, 2013

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NEC CORP (JP)
HIGUCHI TERUYUKI (JP)
IWATA TOMOOMI (JP)

A61B5/117; G06T1/00

JP2010503079A	2010-01-28
JP2008501196A	2008-01-17
JP2010282519A	2010-12-16
JP2006065400A	2006-03-09
JP2010521206A	2010-06-24

UDAKA Katsuki (JP)
Katsumi Uko (JP)

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