Fingerprint recognition device
First Claim
1. A fingerprint recognition device, applicable to retrieving a fingerprint image of a finger, comprising:
- a light guiding plate, having a first surface, a second surface, and at least one sidewall surface, wherein the first surface and the second surface are located at two opposite sides of the light guiding plate respectively, and the sidewall surface is connected between the first surface and the second surface, wherein the first surface is parallel to the second surface;
a finger plate, disposed on the light guiding plate, wherein the first surface of the light guiding plate faces the finger plate and is separated from the finger plate by a distance;
an imaging piece, adjacent to the second surface of the light guiding plate; and
at least one light source, facing the sidewall surface of the light guiding plate, wherein the light source emits a light towards the sidewall surface and the light enters the light guiding plate, the light guided by the light guiding plate is emitted out of the first surface, so as to form a back light source of the finger plate, and the imaging piece retrieves the fingerprint image of the finger on the finger plate.
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Accused Products
Abstract
A fingerprint recognition device, applicable to retrieving a fingerprint image, includes a light guiding plate, a finger plate, an imaging piece, and at least one light source. The light guiding plate has a first surface and a second surface opposite to each other and a sidewall surface connected between the first surface and the second surface. The finger plate is adjacent to the first surface of the light guiding plate. The imaging piece is adjacent to the second surface of the light guiding plate, and the light source is adjacent to the sidewall surface of the light guiding plate. The light source emits a light towards the sidewall surface and the light enters the light guiding plate. The light guided by the light guiding plate is emitted out of the first surface, and the imaging piece retrieves the fingerprint image on the finger plate.
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Citations
10 Claims
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1. A fingerprint recognition device, applicable to retrieving a fingerprint image of a finger, comprising:
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a light guiding plate, having a first surface, a second surface, and at least one sidewall surface, wherein the first surface and the second surface are located at two opposite sides of the light guiding plate respectively, and the sidewall surface is connected between the first surface and the second surface, wherein the first surface is parallel to the second surface; a finger plate, disposed on the light guiding plate, wherein the first surface of the light guiding plate faces the finger plate and is separated from the finger plate by a distance; an imaging piece, adjacent to the second surface of the light guiding plate; and at least one light source, facing the sidewall surface of the light guiding plate, wherein the light source emits a light towards the sidewall surface and the light enters the light guiding plate, the light guided by the light guiding plate is emitted out of the first surface, so as to form a back light source of the finger plate, and the imaging piece retrieves the fingerprint image of the finger on the finger plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification