CN1983300A - Planar light-source module of fingeprint distinguisher - Google Patents
Planar light-source module of fingeprint distinguisher Download PDFInfo
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- CN1983300A CN1983300A CN 200510134370 CN200510134370A CN1983300A CN 1983300 A CN1983300 A CN 1983300A CN 200510134370 CN200510134370 CN 200510134370 CN 200510134370 A CN200510134370 A CN 200510134370A CN 1983300 A CN1983300 A CN 1983300A
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- light source
- planar light
- source module
- water chestnut
- fingeprint distinguisher
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Abstract
A fingerprint identification device is prepared as providing a parallel incoming light by light source, setting a light reflection surface on optical element for making parallel incoming light be reflected onto photoinduction element of fingerprint identification device through said reflection surface.
Description
Technical field
The invention relates to a kind of planar light source module of fingeprint distinguisher, particularly become the planar light source module of single element relevant for integrating planar light source and optical element.
Background technology
At present, be applied to the device of optical system, fingeprint distinguisher particularly, employed light source is based on pointolite or line source mostly, but because pointolite or line source can produce the scattered light that power differs and direction differs, therefore cause the ambiguous problem of sensing image, and then have influence on the identification accuracy rate of fingeprint distinguisher.
See also Fig. 1, it is the synoptic diagram of known fingeprint distinguisher framework.Fingeprint distinguisher 10 comprises a pointolite 11, a water chestnut mirror 12, convex lens 13 and an Image Sensor 14.The image of pressing close to the fingerprint of water chestnut mirror 12 inclined-planes finger 15 is to see through water chestnut mirror 12, will reflex to convex lens 13 from the scattered light 111 and 112 that pointolite 11 is sent, and planoconvex lens 13 converges on the Image Sensor 14 again.Because the intensity inequality of scattered light 111 and 112, and direction is inconsistent, causes the image fog on the Image Sensor 14 unclear.
Because the problem of above-mentioned prior art, in order to solve it, the inventor is based on the research and development of being engaged in the planar light source module for many years and many practical experience, a kind of planar light source module that planar light source and optical element become single element of integrating is proposed, with as implementation and the foundation of improving above-mentioned shortcoming.
Summary of the invention
In view of this, purpose of the present invention is exactly that a kind of planar light source module of fingeprint distinguisher is being provided, to improve the quality of sensing image.
According to purpose of the present invention, a kind of planar light source module of fingeprint distinguisher is proposed, comprise a planar light source and an optical element.Planar light source provides a plane incident light.Optical element has a reflecting surface, so that the plane incident light gives the Photosensing Units of fingeprint distinguisher by the reflecting surface reflection.
Description of drawings:
Fig. 1 is the synoptic diagram of known fingeprint distinguisher framework;
Fig. 2 A is the synoptic diagram of the planar light source module of fingeprint distinguisher of the present invention;
Fig. 2 B is the schematic perspective view of the planar light source module of fingeprint distinguisher of the present invention;
Fig. 3 is the synoptic diagram of preferred embodiment of the planar light source module of fingeprint distinguisher of the present invention.
The figure number explanation:
10: fingeprint distinguisher; 11: pointolite;
12: the water chestnut mirror; 13: convex lens; 14: Image sensor apparatus;
111,112: scattered light; 20: the planar light source module;
21: planar light source; 211: the plane incident light;
22: optical element; 221: reflecting surface;
30: fingeprint distinguisher; 31: the planar light source module;
311: cold light panel; 3111: the plane incident light;
312: right angle water chestnut mirror; 32: convex lens;
33: Photosensing Units; 35: finger.
Embodiment
Now further understand and understanding for the auditor is had technical characterictic of the present invention and the effect reached,, the planar light source module according to the fingeprint distinguisher of preferred embodiment of the present invention is described hereinafter with reference to correlative type.
See also Fig. 2 A, it is the synoptic diagram of the planar light source module of fingeprint distinguisher of the present invention.Among the figure, planar light source module 20 comprises a planar light source 21 and an optical element 22.Planar light source 21 is in order to provide plane incident light 211, and optical element 22 has a reflecting surface 221 so that plane incident light 211 gives the Photosensing Units (not shown) of fingeprint distinguisher by reflecting surface 221 reflections.Please continue and read Fig. 2 B, it is the schematic perspective view of planar light source module 20.In addition, planar light source 21 optionally can be fitted with optical element 22, to reach preferable effect.Above-mentioned planar light source 21 is cold light panel or module backlight preferably, and optical element 22 is the water chestnut mirror preferably, and reflecting surface 221 is a hypotenuse of water chestnut mirror, and planar light source 21 optionally can be fitted with one side relative with hypotenuse of this water chestnut mirror.
See also Fig. 3, be the synoptic diagram of the preferred embodiment of the planar light source module of fingeprint distinguisher of the present invention.Among the figure, fingeprint distinguisher 30 comprises a planar light source module 31, convex lens 32 and a Photosensing Units 33.Planar light source module 31 has a cold light panel 311 and a right angle water chestnut mirror 312, and cold light panel 311 is fitted with one side relative with hypotenuse of right angle water chestnut mirror 312.The image of pressing close to the fingerprint of water chestnut mirror 312 inclined-planes, right angle finger 35 is to see through right angle water chestnut mirror 312, and the plane incident light 3111 that cold light panel 311 is sent reflexes to convex lens 32, and planoconvex lens 32 converges on the Photosensing Units 33 again, with the fingerprint image of sensing finger 35.Above-mentioned Photosensing Units 33 is preferably CMOS transistor element (CMOS) or charge coupled cell (CCD).
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim of the present invention its equivalent modifications of carrying out or change.
Claims (8)
1, a kind of light source module of fingeprint distinguisher, this fingeprint distinguisher has a Photosensing Units, and this planar light source module comprises:
One planar light source provides a plane incident light;
One optical element has a reflecting surface, so that this plane incident light gives this Photosensing Units by this reflecting surface reflection.
As the 1st described planar light source module of claim, it is characterized in that 2, this planar light source is a cold light panel or a module backlight.
3, as the 1st described planar light source module of claim, it is characterized in that this planar light source and this optical element attaching.
As the 1st described planar light source module of claim, it is characterized in that 4, this optical element is a water chestnut mirror.
As the 4th described planar light source module of claim, it is characterized in that 5, this reflecting surface is a hypotenuse of this water chestnut mirror.
As the 5th described planar light source module of claim, it is characterized in that 6, this planar light source is fitted with one side relative with this reflecting surface of this water chestnut mirror.
As the 4th described planar light source module of claim, it is characterized in that 7, this water chestnut mirror is a right angle water chestnut mirror.
8, as the 1st described planar light source module of claim, it is characterized in that this Photosensing Units is CMOS transistor element or charge coupled cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510134370 CN1983300A (en) | 2005-12-16 | 2005-12-16 | Planar light-source module of fingeprint distinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510134370 CN1983300A (en) | 2005-12-16 | 2005-12-16 | Planar light-source module of fingeprint distinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1983300A true CN1983300A (en) | 2007-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510134370 Pending CN1983300A (en) | 2005-12-16 | 2005-12-16 | Planar light-source module of fingeprint distinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1983300A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713537A (en) * | 2016-11-30 | 2017-05-24 | 维沃移动通信有限公司 | Fingerprint module and mobile terminal |
| WO2017118031A1 (en) * | 2016-01-07 | 2017-07-13 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN109643382A (en) * | 2018-07-04 | 2019-04-16 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and terminal |
| US10546175B2 (en) | 2016-01-07 | 2020-01-28 | Shanghai Oxi Technology Co., Ltd | Optical fingerprint module |
-
2005
- 2005-12-16 CN CN 200510134370 patent/CN1983300A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118031A1 (en) * | 2016-01-07 | 2017-07-13 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| US10528788B2 (en) | 2016-01-07 | 2020-01-07 | Shanghai Oxi Technology Co., Ltd | Optical fingerprint module |
| US10546175B2 (en) | 2016-01-07 | 2020-01-28 | Shanghai Oxi Technology Co., Ltd | Optical fingerprint module |
| CN106713537A (en) * | 2016-11-30 | 2017-05-24 | 维沃移动通信有限公司 | Fingerprint module and mobile terminal |
| CN109643382A (en) * | 2018-07-04 | 2019-04-16 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and terminal |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |