| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a biological authentication device capable of detecting even a vein pattern displayed more darkly due to overall low luminance. <P>SOLUTION: This biological authentication device 102 can acquire a figure showing the vein pattern obtained by composing a half of a figure showing the vein pattern acquired by lighting only one light source 170A and a half of a figure showing the vein pattern acquired by lighting only the other light source 170B. <P>COPYRIGHT: (C)2009,JPO&INPIT |
