Fingerprint input apparatus
First Claim
1. A fingerprint input apparatus comprising a light source (2) for emitting light and a plate (3) having a finger contact surface with which a finger (1) is brought into contact in order to pick up a fingerprint image of said finger, said fingerprint image being obtained by introducing the light from said light source into an inside of the finger to scatter the light within the inside of said finger, and collecting the light coming out of said finger through a surface of said finger to form the fingerprint image, wherein:
- said light source is arranged so that the light from said light source enters into a substantial center of a part of said finger which part includes a first joint on a palm side of said finger and that said light source is adapted to be brought into contact with said finger.
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Accused Products
Abstract
A fingerprint input apparatus includes a light source 2 for emitting light and a fiber optic plate 3 having a finger contact surface with which a finger 1 is brought into contact in order to pick up a fingerprint image of the finger 1. The light from the light source 2 is at first introduced into an inside of the finger 1, is scattered within the inside of the finger 1, and comes out of the finger through the surface of the finger 1 as outgoing light. By the use of the outgoing light, the fingerprint image is formed. The light source 2 is disposed so that the light from the light source 2 enters into a substantial center of a part of the finger 1 including a first joint on a palm side and that the light source 2 is contacted with the finger 1.
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Citations
13 Claims
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1. A fingerprint input apparatus comprising a light source (2) for emitting light and a plate (3) having a finger contact surface with which a finger (1) is brought into contact in order to pick up a fingerprint image of said finger, said fingerprint image being obtained by introducing the light from said light source into an inside of the finger to scatter the light within the inside of said finger, and collecting the light coming out of said finger through a surface of said finger to form the fingerprint image, wherein:
said light source is arranged so that the light from said light source enters into a substantial center of a part of said finger which part includes a first joint on a palm side of said finger and that said light source is adapted to be brought into contact with said finger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification