CN1801182A - Fingerprint acquisition device - Google Patents
Fingerprint acquisition device Download PDFInfo
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- CN1801182A CN1801182A CN 200510012675 CN200510012675A CN1801182A CN 1801182 A CN1801182 A CN 1801182A CN 200510012675 CN200510012675 CN 200510012675 CN 200510012675 A CN200510012675 A CN 200510012675A CN 1801182 A CN1801182 A CN 1801182A
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Abstract
The invention discloses a fingerprint collection device, which contains two technique programs, wherein the first technique program is characterized by the following: setting optical image lens between fiber-optical image board and image sensor; fixing the fiber-optical image board on the support board; setting the image light source under the support board; the second technique program is characterized by the following: fixing partial luminous optical-fiber in the fiber-optical image board; setting electrostatic protecting releasing layer on the fiber-optical image board and detected fingerprint touching face; assembling image sensor on the other side of fiber-optical image board; setting the fiber-optical image board on the support board; setting electrode between fiber-optical image board and electrostatic protecting releasing layer as well as between fiber-optical image board and image sensor when using the electroluminescent luminous optical-fiber; fixing photo fiber-optical board between image sensor and electrode; adapting luminous optical-fiber of diffused light source; setting image light source around the periphery of fiber-optical image board. The invention displays low cost, good consistency and definition fingerprint image.
Description
Affiliated technical field
The present invention relates to a kind of fingerprint acquisition device, particularly relate to a kind of imaging fiber plate imaging of passing through, gather the fingerprint acquisition device of fingerprint by imageing sensor.
Background technology
In the prior art, by the imaging of imaging fiber plate, the technical scheme by imageing sensor is gathered fingerprint image is widely used in various fingerprint collectings, on the input media.In the prior art, how various fingerprint acquisition devices make the imaging fiber plate, and contrast performance is good, install cheap for manufacturing costly, printing opacity is even, and the imaging process optical distortion is little, the fingerprint image acquisition high conformity, the fingerprint image error is little, is industry technical matters anxious to be solved.As the disclosed 02150302.8 1 kinds of fingerprint acquisition device patents of invention of Chinese patent, its fingerprint image acquisition is to be contacted with imageing sensor by the imaging fiber plate to finish, the light of fingerprint collecting is the light that light emitted is come out, at first be poured into finger interior, and spread in finger interior, then see through finger surface, penetrate out from finger as penetrating light, penetrate light by gathering, can obtain fingerprint image, the shortcoming of this technical scheme is, adopts and the identical imageing sensor of imaging fiber plate area, and imageing sensor costs an arm and a leg, the ejaculation light intensity that penetrates out in the finger is bigger in the diverse location gap on fingerprint surface, finger marginal ray intensity is bigger, and fingerprint image is clear, and a little less than the light intensity of finger middle part, fingerprint image is unintelligible, need carry out complicated correction, be prone to error, the consistance of fingerprint collecting is difficult to guarantee.
In the art, fingerprint image acquisition accurately, the consistance and the sharpness that keep fingerprint image acquisition, the one, be imaging fiber plate optics contrast performance, the distribution form of optical fiber in the imaging fiber plate, the comprehensive optical property of fiber angle and imaging fiber plate, the 2nd, be that the imaging fiber plate obtains light angle and degree of uniformity.
The technical scheme one that the present invention solves its technical matters employing is: between imaging fiber plate and the imageing sensor, be provided with the optical imagery camera lens, the imaging fiber plate is installed on the back up pad, imaging fibre vergence direction with the imaging fiber plate below back up pad is less than 90 degree angles, one side, is provided with imaging source.The optical imagery camera lens is the little spherical optics imaging system of optical distortion, aspherics imaging system, or self-focusing optics imaging system.Imaging source is for sending the imaging source of blue light or white light, and the imaging fibre direction of irradiating angle and imaging fiber plate tilts to be 60 degree to 135 degree angles.Imageing sensor is CMOS or ccd image sensor.
Technical scheme two is: imaging fiber plate middle part is provided with the emitting optical fiber parallel with imaging fibre; on imaging fiber plate and the tested fingerprint surface of contact; be provided with the electrostatic protection releasing layer; the opposite side of imaging fiber plate; the imageing sensor of having combined closely; the imaging fiber plate is installed on the back up pad, is provided with the part emitting optical fiber parallel with imaging fibre in the imaging fiber plate, and emitting optical fiber is electroluminescence or leans on the luminous emitting optical fiber of diffused light source.
The emitting optical fiber parallel with imaging fibre that is provided with in the imaging fiber plate is electroluminescence optical fiber, imaging fiber plate and electrostatic protection releasing layer; between imaging fiber plate and the imageing sensor; be provided with electrode, imageing sensor and being provided with between the electrode is established the image transmission optical fibre plate.
The emitting optical fiber parallel with imaging fibre in the imaging fiber plate, for the luminous emitting optical fiber of diffused light source, in back up pad, the periphery of imaging fiber plate is provided with one and forms as light source.The imaging fiber plate be shaped as the taper light cone imaging plate that sectional area contracts and becomes.Imaging source is for sending the imaging source of blue light or white light.
The invention has the beneficial effects as follows: at the bottom of the fingerprint acquisition device cost, the fingerprint image optical distortion of collection is little, and fingerprint image is accurate, the fingerprint image high conformity, and fingerprint image is clear.
Description of drawings
Accompanying drawing 1 is the embodiment of the invention 1 structural representation.
Accompanying drawing 2 is the embodiment of the invention 2 structural representations.
Accompanying drawing 3 is the embodiment of the invention 3 structural representations.
Accompanying drawing 4 is the embodiment of the invention 4 structural representations.
Accompanying drawing 5 is the embodiment of the invention 1 logic working figure.
Accompanying drawing 6 is the embodiment of the invention 2, embodiment 3, embodiment 4 logic working figure.
1 imaging fiber plate, 2 imageing sensors, 3 optical imagery camera lenses, 4 back up pads, 5 imaging sources, 6 electrostatic protection releasing layers, 7 imaging sources, 8 image transmission optical fibre plates, 9 electrodes, 10 tested fingerprints, 11 signal processors, 12 signal processing chips, 13 master chip CPU in the accompanying drawing.
Embodiment
Referring to accompanying drawing 1, the embodiment of the invention 1 structural representation, for reducing cost, the fingerprint image that uses cheap imageing sensor 2 and guarantee to gather, optical distortion is little, the collection fingerprint image is accurate, the fingerprint image acquisition high conformity, fingerprint image is clear, between imaging fiber plate 1 and the imageing sensor 2, be provided with optical imagery camera lens 3, imaging fiber plate 1 is installed on the back up pad 4, imaging fibre vergence direction with imaging fiber plate 1 below back up pad 4 is less than 90 degree angles, one side, is provided with imaging source 5.During work, the imaging fiber plate 1 that the light that imaging source 5 sends is formed via inclination optical fiber, evenly be diffused into the surface of tested fingerprint 10, the imaging on imaging fiber plate 1 of tested fingerprint 10, the optical signal image that tested fingerprint 10 on the imaging fiber plate 1 forms, after having optical imagery camera lens 3 to dwindle, shot images sensor 2, change electric signal into, and be input to signal processor 11, signal processor 11 is input to master chip CPU13 with tested fingerprint 10 electric signal images and handles through signal processing chip 12.Imaging source 5 relative imaging fiber plates 1 the position is set, be light for guaranteeing that imaging fiber plate 1 diffusion imaging source 5 sends, make the imaging on imaging fiber plate 1 of tested fingerprint 10 clear, use optical imagery camera lens 3, the cost of imageing sensor 2 is reduced greatly, because optical imagery camera lens 3 adopts little spherical optics imaging system, aspherics imaging system, complex optics imaging system or the self-focusing optics imaging system of optical distortion, can satisfy request for utilization fully.
Referring to accompanying drawing 2, the embodiment of the invention 2 structural representations, the embodiment of the invention is obtained uniform light source technology problem for solving imaging fiber plate 1, be provided with the emitting optical fiber parallel at imaging fiber plate 1 middle part with imaging fibre, both part optical fiber being added luminescent substance becomes emitting optical fiber, and emitting optical fiber can be designed to electroluminescence or lean on the diffused light source emitting optical fiber.
Concrete structure is; imaging fiber plate 1 middle part is provided with the emitting optical fiber parallel with imaging fibre; on imaging fiber plate 1 and tested fingerprint 10 surface of contact; be provided with electrostatic protection releasing layer 6; prevent electrostatic influence imageing sensor 2 on the tested fingerprint 10; the opposite side of imaging fiber plate 1 is provided with imageing sensor 2, and imaging fiber plate 1 is installed on the back up pad 4.Imaging fiber plate 1 and electrostatic protection releasing layer 6 between imaging fiber plate 1 and the imageing sensor 2, are provided with the exciting electrode 9 of emitting optical fiber, and imageing sensor 2 and being provided with between the electrode 9 is provided with the image transmission optical fibre imaging plate 8 of vertical fiber.Image transmission optical fibre imaging plate 8 is to damage when further the imageing sensor 2 of guaranteed price costliness is not excited electrode 9 energisings.During work, electrode 9 energisings make the emitting optical fiber in the image transmission optical fibre imaging plate 8 luminous, 1 pair of tested fingerprint 10 imaging of imaging fiber plate, form on the imaging fiber plate 1 to the image transmission optical fibre imaging plate 8 of tested fingerprint 10 images through electrode 9 and vertical fiber, shot images sensor 2 becomes electric signal.Because electrode 9 uses high transparent material, thus form on the imaging fiber plate 1 to tested fingerprint 10 images behind the imaging fiber plate 8 of electrode 9 and vertical fiber, tested fingerprint 10 picture qualities are not subjected to obviously to influence.Can satisfy request for utilization fully.
Referring to accompanying drawing 3, the embodiment of the invention 3 structural representations, it is the diffused light source emitting optical fiber that present embodiment adopts the emitting optical fiber in the imaging fiber plate 1.
Concrete structure is, the emitting optical fiber parallel that imaging fiber plate 1 middle part is provided with imaging fibre, be the luminous optical fiber of diffused light source, in back up pad 4, imaging fiber plate 1 periphery, be provided with one and form as light source 7, imaging source 7 is for satisfying the needs of optical fiber diffused light, and the light that imaging source 7 sends should be blue light or white light.During work, imaging source 7 makes the emitting optical fiber in the imaging fiber plate 8 luminous, and imaging fiber plate 1 makes tested fingerprint 10 imagings, form on the imaging fiber plate 1 to tested fingerprint 10 optical imagerys, become electric signal through imageing sensor 2.
Referring to accompanying drawing 4, the embodiment of the invention 4 structural representations, it is the emitting optical fiber of diffused light source that present embodiment adopts the optical fiber in the imaging fiber plate 1.Imaging fiber plate 1 be shaped as the taper that sectional area contracts and becomes, the optical fiber direction changes direction with the change of shape of imaging fiber plate 1.In like manner, imaging source 7 is for sending the imaging source of blue light or white light.
Claims (10)
1 one kinds of fingerprint acquisition devices, comprise imaging fiber plate and imageing sensor, it is characterized in that: between described imaging fiber plate (1) and the imageing sensor (2), be provided with optical imagery camera lens (3), imaging fiber plate (1) is installed on the back up pad (4), imaging fibre vergence direction with imaging fiber plate (1) below back up pad (4) is less than 90 degree angles, one side, is provided with imaging source (5).
2 a kind of fingerprint acquisition devices according to claim 1 is characterized in that: described optical imagery camera lens (3) is the little spherical optics imaging system of optical distortion, aspherics imaging system, or self-focusing optics imaging system.
3 a kind of fingerprint acquisition devices according to claim 1 and 2, it is characterized in that: described imaging source (5) is for sending the imaging source of blue light or white light, and the imaging fibre direction of irradiating angle and imaging fiber plate (1) tilts to be 60 degree to 135 degree angles.
4 a kind of fingerprint acquisition devices according to claim 1 and 2 is characterized in that: described imageing sensor (2) is CMOS or ccd image sensor.
5 one kinds of fingerprint acquisition devices; comprise imaging fiber plate and imageing sensor; it is characterized in that: be provided with the part emitting optical fiber parallel in the described imaging fiber plate (1) with imaging fibre; on imaging fiber plate (1) and the tested fingerprint surface of contact; be provided with electrostatic protection releasing layer (6); the opposite side of imaging fiber plate (1), the imageing sensor of having combined closely (2), imaging fiber plate (1) is installed on the back up pad (4).
6 a kind of fingerprint acquisition devices according to claim 5 is characterized in that: the emitting optical fiber parallel that is provided with in the described imaging fiber plate (1) with imaging fibre, and for electroluminescence or by the luminous emitting optical fiber of diffused light source.
7 according to claim 5 or 6 described a kind of fingerprint acquisition devices; it is characterized in that: the emitting optical fiber parallel that is provided with in the described imaging fiber plate (1) with imaging fibre; be electroluminescence optical fiber; imaging fiber plate (1) and electrostatic protection releasing layer (6); between imaging fiber plate (1) and the imageing sensor (2); be provided with electrode (9), imageing sensor (2) and being provided with between the electrode (9) is established image transmission optical fibre plate (8).
8 according to claim 5 or 6 described a kind of fingerprint acquisition devices, it is characterized in that: the emitting optical fiber parallel that is provided with in the described imaging fiber plate (1) with imaging fibre, be the luminous emitting optical fiber of diffused light source, in back up pad (4), the periphery of imaging fiber plate (1) is provided with one and forms as light source (7).
9 according to claim 5 or 8 described a kind of fingerprint acquisition devices, it is characterized in that: described imaging fiber plate (1) be shaped as the taper light cone imaging plate that sectional area contracts and becomes.
10 according to claim 5 or 8 described a kind of fingerprint acquisition devices, it is characterized in that: described imaging source (7) is for sending the imaging source of blue light or white light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510012675 CN1801182A (en) | 2005-07-11 | 2005-07-11 | Fingerprint acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510012675 CN1801182A (en) | 2005-07-11 | 2005-07-11 | Fingerprint acquisition device |
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| CN1801182A true CN1801182A (en) | 2006-07-12 |
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| CN 200510012675 Pending CN1801182A (en) | 2005-07-11 | 2005-07-11 | Fingerprint acquisition device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024147A (en) * | 2010-12-17 | 2011-04-20 | 华东师范大学 | Biological image collection instrument for fingerprints and palm prints |
| CN106503635A (en) * | 2016-10-11 | 2017-03-15 | 广东欧珀移动通信有限公司 | For the cover plate of optical finger print identification, input module and electronic installation |
| CN107203749A (en) * | 2017-05-19 | 2017-09-26 | 公安部物证鉴定中心 | Fingerprint is lossless inside a kind of multilayer tape shows system |
| CN107516034A (en) * | 2017-08-25 | 2017-12-26 | 维沃移动通信有限公司 | A kind of mobile terminal |
| CN107728240A (en) * | 2017-08-28 | 2018-02-23 | 苏州端景光电仪器有限公司 | A kind of selfoc lens array and mobile terminal for fingerprint recognition |
| CN108292361A (en) * | 2015-12-03 | 2018-07-17 | 辛纳普蒂克斯公司 | The integrated optical fingerprint sensor of the display of reflector is limited with angle |
-
2005
- 2005-07-11 CN CN 200510012675 patent/CN1801182A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024147A (en) * | 2010-12-17 | 2011-04-20 | 华东师范大学 | Biological image collection instrument for fingerprints and palm prints |
| CN102024147B (en) * | 2010-12-17 | 2012-10-10 | 华东师范大学 | Biological image collection instrument for fingerprints and palm prints |
| CN108292361A (en) * | 2015-12-03 | 2018-07-17 | 辛纳普蒂克斯公司 | The integrated optical fingerprint sensor of the display of reflector is limited with angle |
| CN108292361B (en) * | 2015-12-03 | 2021-12-07 | 指纹卡有限公司 | Display integrated optical fingerprint sensor with angle limiting reflector |
| CN108292361B8 (en) * | 2015-12-03 | 2022-01-25 | 指纹卡安娜卡敦知识产权有限公司 | Display integrated optical fingerprint sensor with angle limiting reflector |
| CN106503635A (en) * | 2016-10-11 | 2017-03-15 | 广东欧珀移动通信有限公司 | For the cover plate of optical finger print identification, input module and electronic installation |
| CN106503635B (en) * | 2016-10-11 | 2019-06-28 | Oppo广东移动通信有限公司 | Cover board, input module and electronic device for optical finger print identification |
| CN107203749A (en) * | 2017-05-19 | 2017-09-26 | 公安部物证鉴定中心 | Fingerprint is lossless inside a kind of multilayer tape shows system |
| CN107516034A (en) * | 2017-08-25 | 2017-12-26 | 维沃移动通信有限公司 | A kind of mobile terminal |
| CN107516034B (en) * | 2017-08-25 | 2020-03-24 | 维沃移动通信有限公司 | Mobile terminal |
| CN107728240A (en) * | 2017-08-28 | 2018-02-23 | 苏州端景光电仪器有限公司 | A kind of selfoc lens array and mobile terminal for fingerprint recognition |
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