Fingerprint reading device

Abstract

A fingerprint reading device that can suppress a position shift of a finger, that includes: a placement portion on which a finger is placed; a reading face; a pair of light sources provided on the placement portion and that irradiate the finger with lights; and a reading unit that captures and reads a fingerprint of the finger in contact with the reading face in accordance with lights scattered in the finger and emitted from a surface of the finger, the pair of light sources are provided on both ends of the reading face that are opposed to each other in a width direction of the placement portion and have light guiding parts formed in a front-back direction of the placement portion, respectively, and the light guiding parts are formed so as to extend up to above the ends of the reading face.

1 .- 10 . (canceled) 
     
     
         11 . A fingerprint reading device comprising:
 a plate-like member made of a material that transmits light;   light guiding parts that are formed so as to extend up to above ends of the plate-like member and are able to support, by at least a portion formed so as to extend up to above the ends of the plate-like member, a finger whose fingerprint is to be read;   a pair of light sources that are provided on both ends of the plate-like member that are opposed to each other in a width direction of the plate-like member and irradiate the finger with lights via the light guiding parts from sides of the finger, respectively; and   a reading unit that captures and reads the fingerprint of the finger.   
     
     
         12 . The fingerprint reading device according to  claim 11 , wherein the pair of light sources are inclined inward above the plate-like member. 
     
     
         13 . The fingerprint reading device according to  claim 11 ,
 wherein each of the pair of light sources has a plurality of unit light sources arranged extending in the front-rear direction of the plate-like member, and   wherein each of the light guiding parts is formed to cover the plurality of unit light sources.   
     
     
         14 . The fingerprint reading device according to  claim 13 , wherein each of the light guiding parts has
 a protrusion part covering the plurality of unit light sources, and   an edge part formed integrally with the protrusion part on the plate-like member side of the protrusion part and having a lower height in a perpendicular direction of the plate-like member than the protrusion part.   
     
     
         15 . The fingerprint reading device according to  claim 14 , wherein the edge part and a part of the protrusion part are located over the end of the plate-like member. 
     
     
         16 . The fingerprint reading device according to  claim 14 , wherein a part of the edge part is located over the end of the plate-like member. 
     
     
         17 . The fingerprint reading device according to  claim 14 ,
 wherein a width of the edge part located over the end of the plate-like member is wider toward a front side of the plate-like member.   
     
     
         18 . The fingerprint reading device according to  claim 14 ,
 wherein the edge part of the light guiding part for one of the pair of light sources and the edge part of the light guiding part for the other of the pair of light sources are formed to be continuous to each other above the plate-like member, and   wherein an opening that exposes the plate-like member is formed in the edge parts.   
     
     
         19 . The fingerprint reading device according to  claim 11  further comprising a light shielding part formed on an underside of the light guiding parts in a portion located on the ends of the plate-like member.