CN103632128A - Flat fingerprint gatherer - Google Patents
Flat fingerprint gatherer Download PDFInfo
- Publication number
- CN103632128A CN103632128A CN201210304171.4A CN201210304171A CN103632128A CN 103632128 A CN103632128 A CN 103632128A CN 201210304171 A CN201210304171 A CN 201210304171A CN 103632128 A CN103632128 A CN 103632128A
- Authority
- CN
- China
- Prior art keywords
- light
- prism
- collection prism
- reflecting surface
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention provides a flat fingerprint gatherer comprising an upper cover, a housing, an acquisition prism, a light source, an imaging device, a circuit board and a base. The flat fingerprint gatherer is characterized in that the light source is arranged on the side surface of the acquisition prism, light enters form the side surface of the acquisition prism, and collected fingerprint images are reflected to the imaging device for imaging though a first reflection surface, a second reflection surface and a light-emitting surface. The light source is arranged on the side surface of the acquisition prism, so that uniformity of light irradiating on the acquisition surface is better, halation destroying dark background environment for fingerprint imaging will not be generated, and the effect of dry finger imaging is good. The light source is arranged on the side surface of the acquisition prism, so that the thickness of the fingerprint gatherer is reduced, the whole size of the fingerprint gatherer is reduced, the requirement for miniaturization of the fingerprint gatherer in the market is satisfied; and meanwhile, the imaging effect of the fingerprint images on the fingerprint gatherer is improved.
Description
Technical field
The invention belongs to fingerprint image and catch identification art field, be specifically related to a kind of flat sensor construction fingerprint capturer.
Background technology
Optical fingerprint acquisition instrument utilizes the light optical difference that crestal line valley line difference causes during because of finger contact on interface form image and gather.
In optical fingerprint collector, the installation site of light source not only can affect the size of fingerprint capturer overall dimensions, also can affect the imaging effect of the fingerprint image finally collecting.In prior art, light source be conventionally positioned over Collection prism below or side (referring to Fig. 1) below, the bottom that light source 43 is placed on Collection prism 44 can increase the thickness of Acquisition Instrument, increases the volume of fingerprint capturer; Light source 41 is positioned over the side of Collection prism 42 when following, because the light of surface of light source can, at prism inner counter interflection, if will avoid the reflector space of light source 41, will increase the width that prism gathers face, thereby increase the volume of Collection prism 42, strengthen the size of fingerprint capturer.As shown in Figure 2, light source 13 be arranged on Collection prism 12 bottoms or side following, the illumination that light source 13 sends is mapped on the second reflecting surface can, at the fingerprint image 16 obvious halation 15 that superpose, affect the effect of fingerprint image above.Meanwhile, the light that light source 13 is irradiated on the second reflecting surface will destroy dark background environment, and the background color of fingerprint image is illuminated, thereby make the imaging effect variation of dry finger.In the patent that is 201020100724.0 in the patent No., the scheme that employing is installed black cavity in prism straight middle surface one side, by black cavity, absorb light, improved image quality, yet, the in the situation that of Collection prism same volume, black cavity can increase the overall volume of fingerprint capturer, if add, the volume that will reduce fingerprint capturer after black cavity just can only reduce Collection prism longitudinal length, the gathered area that reduces meeting downscaled images sensor of Collection prism longitudinal length, thus fingerprint recognition effect affected.
Summary of the invention
For solving the problems of the technologies described above, flat fingerprint capturer provided by the invention comprises upper cover, shell, Collection prism, light source, imaging device, circuit board and base, described Collection prism is right-angled trapezium prism, described Collection prism comprises the fingerprint collecting region of the upper surface that is positioned at Collection prism, be positioned at the light entrance face of Collection prism side, be positioned at the first reflecting surface of Collection prism bottom surface, be positioned at second reflecting surface and the light-emitting face that is positioned at Collection prism straight middle surface of Collection prism oblique girdle plane, it is characterized in that, described light source is arranged on base side and is close to the side of Collection prism, described light source and circuit board are electrically connected.
The size of described the first reflecting surface, make all light of the outgoing from fingerprint collecting region that receives can be successively through the reflection of the first reflecting surface and the second reflecting surface from light-emitting face outgoing.
There is a border circular areas at described Collection prism light-emitting face center, and light-emitting face is all blackings except border circular areas; Described border circular areas size, makes from the light from the first reflecting surface of the second reflecting surface reflection all from outgoing in border circular areas.
Described Collection prism bottom surface is all used pitch-dark blacking except the first reflecting surface.
Described upper cover consists of housing and fingerprint collecting window; The size in fingerprint collecting region and fingerprint collecting window size match.
Described upper cover and floor installation are on shell.
Described base is comprised of the device cavity that the prism cavity of Collection prism, the light source cavity that light source is installed and installation imaging device are installed, and there is a round hole in the base centre between light source cavity and device cavity; The geomery of described prism cavity and the geomery of Collection prism match, and after Collection prism is arranged in prism cavity, the size of the light-emitting face central circular of Collection prism is corresponding with described round hole.
Described round hole is for being transmitted to imaging device by the light of light-emitting face central circular outgoing, the shape size of round hole and the size of imaging device match, and the imaging center position of the center of described light-emitting face central circular, the center of round hole, imaging device and the optical axis center of the second reflecting surface emergent light are point-blank.
Described imaging device consists of lens combination and imageing sensor, described lens combination is fix-focus lens module, described imageing sensor is cmos sensor, imageing sensor is perpendicular to the straight middle surface of Collection prism, be installed on circuit board, the center of the imaging center of described imaging device, the center of round hole, light-emitting face central circular and the optical axis center of the second reflecting surface are point-blank.
Described circuit board is arranged on base, near Collection prism straight middle surface one side.
The present invention is arranged on Collection prism side by light source, and the overall volume of fingerprint capturer is reduced; The homogeneity of irradiation on collection face is better, can not produce the halation of the dark background environment that destroys fingerprint imaging, thereby makes dry finger imaging effect good.Cmos image sensor, perpendicular to Collection prism straight middle surface, is convenient to direct shooting, reduces space, reduces assembly difficulty.Base centre perforate between light source cavity and device cavity, allows light be transmitted to cmos image sensor by perforate, does not need additionally to provide light illuminating anchor point.Perforate simultaneously can be used as anchor point, and anchor point is processed without special process.Meet the requirement to optical fingerprint collector miniaturization on the market.
Accompanying drawing explanation
Fig. 1 is the light source position figure of prior art;
Fig. 2 is the index path of prior art;
Fig. 3 is stereographic map of the present invention;
Fig. 4 is scheme of installation of the present invention;
Fig. 5 is section index path of the present invention;
Fig. 6 is illumination schematic diagram of the present invention.
Embodiment
The preferred embodiments of the present invention are described with reference to the accompanying drawings, and specific embodiment described herein only, in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, flat fingerprint capturer comprises: upper cover 1, shell 2, Collection prism 3, light source 4, imaging device 5, circuit board 6, base 7.
Light source 4 is pointolite or area source, in the present embodiment, light source 4 is arranged on the side of Collection prism 3, and light is from the side incident of Collection prism 3, by the fingerprint image collecting through the first reflecting surface 32, the second reflecting surface 33, from the whole outgoing of light-emitting face 34 central circular 36.Light source 4 is installed on to the side of Collection prism 3, the homogeneity of irradiation on collection face is better, can not produce the halation of the dark background environment that destroys fingerprint imaging, thereby makes dry finger imaging effect good.
During installation, Collection prism 3 is arranged in the prism cavity D of base 7, light-emitting face 34 central circular 36 are corresponding with the round hole F of base 7, can adopt that the place joining at Collection prism 3 side not polishings parts and base 7 is gluing fixes the two, circuit board 6 is arranged on the afterbody of base 7 near Collection prism 3 straight middle surface one sides, and is fixed by screws on base 7.Light source 4 is arranged in the light source cavity C of base 7, is close to, and is electrically connected with circuit board with the light entrance face 35 that is arranged on the Collection prism in prism cavity D, by circuit board 6, controls luminous.Imaging device 5 is installed in the device cavity E of base 7, and F is corresponding with round hole, and is fixed on circuit board 6.
The image-forming principle of the present embodiment is: the light that light source sends is irradiated on collection face, be radiated at valley line place and be greater than the light of the angle of total reflection in two surperficial experiences total internal reflection up and down of Collection prism 3 inside, be radiated at light that crestal line place is greater than the angle of total reflection and changed total reflection condition because of the close contact of crestal line, a part is absorbed by finger coupling, there is diffuse reflection in a part, diffuse light is irradiated on the first reflecting surface 32.The light reflection that the first reflecting surface 32 reflects the crestal line place receiving is to the second reflecting surface 33, the second reflecting surface 33 by the light reflection from the first reflecting surface 32 to light-emitting face 34 central circular 36, imaging device 5 receives the image formation by rays transmitting from light-emitting face 34 central circular 36, thereby obtains a darker fingerprint image in brighter valley line place, secondary crestal line place.
Those skilled in the art is not departing under the condition of the definite the spirit and scope of the present invention of claims, can also carry out various modifications to above content.Therefore scope of the present invention is not limited in above explanation, but determined by the scope of claims.
Claims (10)
1. flat fingerprint capturer, comprise upper cover, shell, Collection prism, light source, imaging device, circuit board and base, described Collection prism is right-angled trapezium prism, described Collection prism comprises the fingerprint collecting region of the upper surface that is positioned at Collection prism, be positioned at the light entrance face of Collection prism side, be positioned at the first reflecting surface of Collection prism bottom surface, be positioned at second reflecting surface and the light-emitting face that is positioned at Collection prism straight middle surface of Collection prism oblique girdle plane, it is characterized in that, described light source is arranged on base side and is close to the side of Collection prism, described light source and circuit board are electrically connected.
2. flat fingerprint capturer according to claim 1, it is characterized in that, the size of described the first reflecting surface, make all light of the outgoing from fingerprint collecting region that receives can be successively through the reflection of the first reflecting surface and the second reflecting surface from light-emitting face outgoing.
3. flat fingerprint capturer according to claim 1, is characterized in that, there is a border circular areas at described Collection prism light-emitting face center, and light-emitting face is all blackings except border circular areas; Described border circular areas size, makes from the light from the first reflecting surface of the second reflecting surface reflection all from outgoing in border circular areas.
4. the flat fingerprint capturer described in any one according to claims 1 to 3, is characterized in that, described Collection prism bottom surface is all used pitch-dark blacking except the first reflecting surface.
5. flat fingerprint capturer according to claim 1, is characterized in that, described upper cover consists of housing and fingerprint collecting window; The size in fingerprint collecting region and fingerprint collecting window size match.
6. flat fingerprint capturer according to claim 1, is characterized in that, described upper cover and floor installation are on shell.
7. flat fingerprint capturer according to claim 1, it is characterized in that, described base is comprised of the device cavity that the prism cavity of Collection prism, the light source cavity that light source is installed and installation imaging device are installed, and there is a round hole in the base centre between light source cavity and device cavity; The geomery of described prism cavity and the geomery of Collection prism match, and after Collection prism is arranged in prism cavity, the size of the light-emitting face central circular of Collection prism is corresponding with described round hole.
8. flat fingerprint capturer according to claim 6, it is characterized in that, described round hole is for being transmitted to imaging device by the light of light-emitting face central circular outgoing, the shape size of round hole and the size of imaging device match, and the imaging center position of the center of described light-emitting face central circular, the center of round hole, imaging device and the optical axis center of the second reflecting surface emergent light are point-blank.
9. flat fingerprint capturer according to claim 7, it is characterized in that, described imaging device consists of lens combination and imageing sensor, described lens combination is fix-focus lens module, described imageing sensor is cmos sensor, imageing sensor, perpendicular to the straight middle surface of Collection prism, is installed on circuit board, and the center of the imaging center of described imaging device, the center of round hole, light-emitting face central circular and the optical axis center of the second reflecting surface are point-blank.
10. flat fingerprint capturer according to claim 1, is characterized in that, described circuit board is arranged on base, near Collection prism straight middle surface one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304171.4A CN103632128A (en) | 2012-08-24 | 2012-08-24 | Flat fingerprint gatherer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304171.4A CN103632128A (en) | 2012-08-24 | 2012-08-24 | Flat fingerprint gatherer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103632128A true CN103632128A (en) | 2014-03-12 |
Family
ID=50213160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210304171.4A Pending CN103632128A (en) | 2012-08-24 | 2012-08-24 | Flat fingerprint gatherer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103632128A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680162A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Surrounding Fingerprint Collection Method and Its Construction |
| CN104680136A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Direct shot fingerprint collection method and its structure |
| CN106412166A (en) * | 2016-11-23 | 2017-02-15 | 广东欧珀移动通信有限公司 | Terminal and casing assembly thereof |
| CN107392160A (en) * | 2017-07-27 | 2017-11-24 | 北京小米移动软件有限公司 | Optical finger print recognition methods and device, computer-readable recording medium |
| WO2018095115A1 (en) * | 2016-11-23 | 2018-05-31 | 广东欧珀移动通信有限公司 | Assembly with housing of terminal, and terminal |
| WO2023100536A1 (en) * | 2021-12-03 | 2023-06-08 | 太陽誘電株式会社 | Measurement device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030021450A1 (en) * | 2001-07-27 | 2003-01-30 | Yury Shapiro | Fingerprint imaging device |
| CN1493255A (en) * | 2001-10-30 | 2004-05-05 | �ձ�������ʽ���� | Apparatus for inputting fingerprint |
| US20040146188A1 (en) * | 2002-08-06 | 2004-07-29 | Carver John F. | Contoured prism print scanners |
| CN1867927A (en) * | 2003-10-17 | 2006-11-22 | 萨热姆防务安全公司 | Optical finger print image forming device |
| CN201600711U (en) * | 2010-01-20 | 2010-10-06 | 浙江德施曼机电有限公司 | Flat fingerprint collector |
| US8077929B2 (en) * | 2006-02-22 | 2011-12-13 | Wasatch Photonics, Inc. | Ambient light rejection filter |
| CN102360425A (en) * | 2011-10-21 | 2012-02-22 | 成都方程式电子有限公司 | Thinned optical fingerprint acquirer |
| CN202748805U (en) * | 2012-08-24 | 2013-02-20 | 成都方程式电子有限公司 | Flat fingerprint gatherer |
-
2012
- 2012-08-24 CN CN201210304171.4A patent/CN103632128A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030021450A1 (en) * | 2001-07-27 | 2003-01-30 | Yury Shapiro | Fingerprint imaging device |
| CN1493255A (en) * | 2001-10-30 | 2004-05-05 | �ձ�������ʽ���� | Apparatus for inputting fingerprint |
| US20040146188A1 (en) * | 2002-08-06 | 2004-07-29 | Carver John F. | Contoured prism print scanners |
| CN1867927A (en) * | 2003-10-17 | 2006-11-22 | 萨热姆防务安全公司 | Optical finger print image forming device |
| US8077929B2 (en) * | 2006-02-22 | 2011-12-13 | Wasatch Photonics, Inc. | Ambient light rejection filter |
| CN201600711U (en) * | 2010-01-20 | 2010-10-06 | 浙江德施曼机电有限公司 | Flat fingerprint collector |
| CN102360425A (en) * | 2011-10-21 | 2012-02-22 | 成都方程式电子有限公司 | Thinned optical fingerprint acquirer |
| CN202748805U (en) * | 2012-08-24 | 2013-02-20 | 成都方程式电子有限公司 | Flat fingerprint gatherer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680162A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Surrounding Fingerprint Collection Method and Its Construction |
| CN104680136A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Direct shot fingerprint collection method and its structure |
| CN104680162B (en) * | 2015-02-06 | 2018-11-23 | 广东光阵光电科技有限公司 | Surrounding type fingerprint collecting method and structure thereof |
| CN104680136B (en) * | 2015-02-06 | 2018-11-23 | 广东光阵光电科技有限公司 | Direct-shooting type fingerprint acquisition method and structure thereof |
| CN106412166A (en) * | 2016-11-23 | 2017-02-15 | 广东欧珀移动通信有限公司 | Terminal and casing assembly thereof |
| WO2018095115A1 (en) * | 2016-11-23 | 2018-05-31 | 广东欧珀移动通信有限公司 | Assembly with housing of terminal, and terminal |
| CN106412166B (en) * | 2016-11-23 | 2022-07-12 | 深圳市欢太科技有限公司 | Shell assembly of terminal and terminal |
| CN107392160A (en) * | 2017-07-27 | 2017-11-24 | 北京小米移动软件有限公司 | Optical finger print recognition methods and device, computer-readable recording medium |
| US10885298B2 (en) | 2017-07-27 | 2021-01-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for optical fingerprint recognition, and computer-readable storage medium |
| WO2023100536A1 (en) * | 2021-12-03 | 2023-06-08 | 太陽誘電株式会社 | Measurement device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103632128A (en) | Flat fingerprint gatherer | |
| CN106875842B (en) | Display screen with fingerprint acquisition function | |
| CN100520458C (en) | Illumination apparatus and image capturing apparatus | |
| CN104182727B (en) | Ultra-thin fingerprint and palm print acquisition device and fingerprint and palm print image acquisition method | |
| CN111052137A (en) | Optical fingerprint identification device and electronic equipment | |
| CN105095844B (en) | Binocular iris image data acquisition module and method | |
| JP4566929B2 (en) | Imaging device | |
| CN211319241U (en) | Optical fingerprint detection device, touch screen and electronic equipment | |
| KR100908860B1 (en) | Imaging device | |
| JP2007233231A (en) | Imaging device having distance measuring function | |
| CN109740514A (en) | A kind of display screen optical finger print identification electronic device and method | |
| CN111052138A (en) | Optical fingerprint identification method and device and electronic equipment | |
| CN202632317U (en) | Dark-background optical fingerprint acquisition device | |
| CN102737233A (en) | Dark background optical fingerprint acquisition device | |
| CN212084164U (en) | Fingerprint module and electronic equipment | |
| CN202748805U (en) | Flat fingerprint gatherer | |
| CN210295114U (en) | Optical fingerprint identification device and electronic equipment | |
| CN101964058B (en) | Thin optical fingerprint scanner | |
| CN105940414A (en) | Fingerprint input device using portable terminal having camera and external optical device for inputting fingerprint | |
| CN205545531U (en) | Intelligent mobile device's auxiliary lens and illumination adjustment system | |
| JP6256345B2 (en) | Condensing unit, condensing method, and light detection system | |
| CN112291417B (en) | Embedded device for detecting micro lens based on mobile phone camera | |
| CN218004132U (en) | Handprint collecting system | |
| CN102360425A (en) | Thinned optical fingerprint acquirer | |
| CN203405831U (en) | An optical fingerprint sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140312 |
|
| RJ01 | Rejection of invention patent application after publication |