Patent attributes
To provide a fingerprint input device including a collected fiber member that is brought into intimate contact with a fingerprint surface of a finger, a planar light source for illuminating said fingerprint surface, and a two-dimensional image sensor for detecting a light reflected from the fingerprint surface and a light scattered in the finger and emitted from the fingerprint surface, the two-dimensional image sensor having a plurality of photoelectric conversion element arranged two-dimensionally on a substrate. The fingerprint input device detects a fingerprint image and a plethysmogram or acceleration plethysmogram by switching between a mode, in which electric signals produced in the plurality of photoelectric conversion elements are output simultaneously, and a mode, in which electric signals produced in the plurality of photoelectric conversion elements are output sequentially. Thus, the fingerprint input device having a simple configuration can detect the fingerprint image or the plethysmogram with high precision.
