Optical sensor using collimator
US-2016224816-A1 · Aug 4, 2016 · US
Fingerprint identification apparatus
US10275630B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10275630-B2 |
| Application number | US-201816200656-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 27, 2018 |
| Priority date | Dec 11, 2015 |
| Publication date | Apr 30, 2019 |
| Grant date | Apr 30, 2019 |
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Abstract
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A fingerprint identification apparatus including a light-transmitting device, an image-capture device disposed opposite to the light-transmitting device, and a collimator disposed between the light-transmitting device and the image-capture device is provided. The collimator includes a plurality of light-shielding layers and a plurality of light-transmitting layers that are alternately stacked. Each of the light-shielding layers has a plurality of openings respectively corresponding to a plurality of pixel regions of the image-capture device. Openings of the plurality of light-shielding layers corresponding to one pixel region are arranged along an oblique direction. The oblique direction and a normal direction of a pressing surface of the light-transmitting device have an included angle θ, and 0°<θ<90°.
First claim
Opening claim text (preview).
What is claimed is: 1. A fingerprint identification apparatus, comprising: a light-transmitting device having a pressing surface; an image-capture device disposed opposite to the light-transmitting device and having a plurality of pixel regions; and a collimator disposed between the light-transmitting device and the image-capture device, wherein the collimator has a plurality of first optical channels and a plurality of second optical channels, the first optical channels are extended in a first oblique direction, the first oblique direction and a normal direction of the pressing surface have an included angle θ1, 0°<θ1<90°, the second optical channels are extended in a second oblique direction, the second oblique direction and the normal direction of the pressing surface have an included angle θ2, 0°<θ2<90°, and the first oblique direction and the second oblique direction are staggered. 2. The fingerprint identification apparatus of claim 1 , wherein a sensing light beam passes through the first optical channels to be transmitted toward a finger on the pressing surface; and the sensing light beam from the pressing surface passes through the second optical channels to be transmitted to the pixel regions of the image-capture device. 3. The fingerprint identification apparatus of claim 1 , wherein 35°<θ1<85°. 4. The fingerprint identification apparatus of claim 1 , wherein 35°<θ2<85°. 5. The fingerprint identification apparatus of claim 1 , wherein the included angle θ1 and the included angle θ2 are different. 6. The fingerprint identification apparatus of claim 1 , wherein the image-capture device comprises: a light-transmitting carrier having the pixel regions; and a plurality of photoelectric conversion structures disposed in the pixel regions of the light-transmitting carrier.
Assignees
Inventors
Classifications
- G06V40/1318Primary
using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title
Physics · mapped topic
- G06K9/00013Primary
Physics · mapped topic
Physics · mapped topic
Collimators · CPC title
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- What does patent US10275630B2 cover?
- A fingerprint identification apparatus including a light-transmitting device, an image-capture device disposed opposite to the light-transmitting device, and a collimator disposed between the light-transmitting device and the image-capture device is provided. The collimator includes a plurality of light-shielding layers and a plurality of light-transmitting layers that are alternately stacked. …
- Who is the assignee on this patent?
- Gingy Technology Inc
- What technology area does this patent fall under?
- Primary CPC classification G06V40/1318. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 30 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).