FINGERPRINT IDENTIFICATION MODULE
First Claim
1. A fingerprint identification module for sensing a fingerprint of a finger, the fingerprint identification module comprising:
- an image sensor;
a light guide, disposed on the image sensor;
at least one light source, disposed beside the light guide and configured to emit a light beam;
a spatial filter, disposed between the light guide and the image sensor and having a plurality of light channels; and
a reflector, disposed between the light guide and the spatial filter, wherein the reflector has a plurality of light transmitting portions, and each of the light channels of the spatial filter overlaps the at least one transmitting portion of the reflector,wherein the light beam is sequentially diffused by the fingerprint of the finger and passes through the light guide, the at least one light transmitting portion of the reflector and each of the light channels of the spatial filter to be transmitted to the image sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
A fingerprint identification module including an image sensor, a light guide, at least one light source, a spatial filter and a reflector is provided. The light guide is disposed on the image sensor. The at least one light source is disposed beside the light guide and is configured to emit a light beam. The spatial filter is disposed between the light guide and the image sensor and has a plurality of light channels. The reflector is disposed between the light guide and the spatial filter, wherein the reflector has a plurality of light transmitting portions, and each of the light channels of the spatial filter overlaps the at least one light transmitting portion. The light beam is sequentially diffused by a fingerprint and passes through the light guide, the at least one light transmitting portion of the reflector, and each of the light channels of the spatial filter to be transmitted to the image sensor.
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Citations
19 Claims
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1. A fingerprint identification module for sensing a fingerprint of a finger, the fingerprint identification module comprising:
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an image sensor; a light guide, disposed on the image sensor; at least one light source, disposed beside the light guide and configured to emit a light beam; a spatial filter, disposed between the light guide and the image sensor and having a plurality of light channels; and a reflector, disposed between the light guide and the spatial filter, wherein the reflector has a plurality of light transmitting portions, and each of the light channels of the spatial filter overlaps the at least one transmitting portion of the reflector, wherein the light beam is sequentially diffused by the fingerprint of the finger and passes through the light guide, the at least one light transmitting portion of the reflector and each of the light channels of the spatial filter to be transmitted to the image sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification