CN202486805U - Large-collecting-face fingerprint collecting device - Google Patents
Large-collecting-face fingerprint collecting device Download PDFInfo
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- CN202486805U CN202486805U CN2012200534912U CN201220053491U CN202486805U CN 202486805 U CN202486805 U CN 202486805U CN 2012200534912 U CN2012200534912 U CN 2012200534912U CN 201220053491 U CN201220053491 U CN 201220053491U CN 202486805 U CN202486805 U CN 202486805U
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- pentagonal prism
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Abstract
The utility model provides a large-collecting-face fingerprint collecting device which comprises a semi-pentagon prism, a one-time reflective mirror, a two-time reflective mirror, an optical lens, a light source, a complementary-metal-oxide-semiconductor (CMOS) sensor adopting a color CMOS chip, and a casing. The large-collecting-face fingerprint collecting device is provided with a digital signal processor (DSP) chip, a crystal oscillator, an electrically erasable read-only memory (EMROM), a low drop out (LDO), a reset circuit and a universal serial bus communication interface (USB). The DSP chip and the CMOS sensor form an image collecting unit. The large-collecting-face fingerprint collecting device is further provided with an even-light plate which is parallel to an inclined long waist face of the semi-pentagon prism. The even-light plate and a light guide plate are overlapped and stuck into one. Light ray shining on a large collecting face is dispersed evenly and softly. Images exported by the image collecting unit are not compressed and are high in definition. Moreover, an occupancy rate of a system resource is low. The semi-pentagon prism is stably installed through a small end portion and two side faces of the semi-pentagon prism. The fixed connection between the casing and a backlight plate does not require installation of a screw. Accordingly, assembly is convenient, cost is lowered, and production efficiency is improved. An adjustable focus hole of an adjustable concave lens is arranged outside the casing, thereby bringing convenience to improving definition of fingerprint images and fingerprint identification efficiency.
Description
Technical field
The utility model relates to method or the device that the applying electronic circuit carries out living things feature recognition, particularly relates to a kind of fingerprint acquisition device of big collection face.
Background technology
Chinese patent CN2867454Y and CN2867455Y have announced same applicant's a kind of " inequilateral prism fingerprint capturer " and a kind of " large format fingerprint capturer " respectively; The technical scheme that merges provides a kind of fingerprint capturer that original fingerprint capturer volume is big, collection face is little that solves; It is made up of light source, half pentagonal prism, lens and photoelectric detector, and half pentagonal prism cross section is a drift angle greater than 90 ° not isosceles triangle, highly is 8～14 millimeters; Bottom width is 18～26 millimeters; Length is 24～36 millimeters, and the long central plane of half pentagonal prism, one skew back is equipped with light source, the also equipped lens in right-hand member below; The equipped photoelectric detector in the lens outside; Another skew back short-girdle plane one side of half pentagonal prism is furnished with the reflective mirror that the upper end tilts to oblique short-girdle plane, and right side, a reflective mirror lower end is furnished with it angle greater than 90 ° and the downward-sloping secondary reflecting mirror of right-hand member, and light source is by the LGP that is positioned at tiltedly long central plane one side of half pentagonal prism and be positioned at light emitting diode (the light emitting diode of LGP outer end; Initialism is LED) form; The shadow surface that LGP is positioned at prism one side is for covering husky hair side or being the corrugated surface of triangle fin formation, and the width of triangle fin is 0.20～0.28 millimeter, highly is 0.10～0.14 millimeter.Above-mentioned fingerprint capturer has that half pentagonal prism is thin, collection face big, distortion is little, distortion rate is low, discrimination is high, dependable performance, volume are little, in light weight, easy to use, and the advantage that is suitable for identification fields such as public security, customs, I.D. most.But its image acquisition units is only supported JPEG compressed format, diminishes the sharpness of image, and the system resource occupancy is high; Half pentagonal prism only depends on the side of two symmetries fixing firm inadequately, and the assembling of light source assembling need screw, has not only strengthened the volume and the cost of fingerprint capturer; And reduced production efficiency, and in addition, the lens Nonadjustable focusing; When lens focus was inconsistent, image was clear inadequately, and fingerprint recognition efficient is had negative effect.
Summary of the invention
The utility model technical matters to be solved is that the fingerprint capturer to Chinese patent CN2867454Y and CN2867455Y bulletin further improves, and a kind of fingerprint acquisition device of improved big collection face is provided.
The technical matters of the utility model solves through following technical scheme.
The fingerprint acquisition device of this big collection face; Comprise the cross section be drift angle greater than half pentagonal prism of 90 ° not isosceles triangle, be fitted in a reflective mirror that the upper end of oblique short-girdle plane one side of said half pentagonal prism tilts to oblique short-girdle plane, be fitted in right side, a said reflective mirror lower end with it angle greater than the downward-sloping secondary reflecting mirror of 90 ° and right-hand member, be fitted in the oblique long central plane one side right-hand member below of said half pentagonal prism lens, be fitted in oblique long central plane one side of said half pentagonal prism light source, be fitted in the photoelectric detector in the said lens outside and housing.
The oblique long central plane of said half pentagonal prism is that light source is injected face; The oblique short-girdle plane of said half pentagonal prism is the fingerprint image outgoing plane; The large-area coated on bottom side of said half pentagonal prism is covered with the transparent elastic resin film layer as the fingerprint image acquisition face, and said transparent elastic resin molding is a kind of in organic siliconresin and the acryl resin.Can oppress said transparent elastic resin molding because of the burr of fingerprint, it sunk, when incident illumination is mapped to fingerprint; Burr and transparent elastic resin molding soak into, and can absorb incident light better, and the dimpled grain of fingerprint can not oppressed said transparent elastic resin molding; And by air insulated; Incident light is formed complete internal reflection,, reduce distortion rate to improve the discrimination of fingerprint image.
Said light source comprises the top of the LGP of oblique long central plane one side that is positioned at said half pentagonal prism; And the light emitting diode that is positioned at least 1 visible or infrared light of said LGP outer end; It is big to have the light source area, and the characteristics that thickness is little are applicable to the illumination of big collection face.
The characteristics of the fingerprint acquisition device of this big collection face are:
Said photoelectric detector is the cmos sensor that adopts colored complementary metal oxide semiconductor (CMOS) (Complementary Metal～Oxide～Semiconductor, initialism are CMOS) chip.
Be provided with digital signal processing (Digital Signal Processing; Initialism is DSP) chip, the crystal oscillator that is connected with said dsp chip respectively, storage unit EEROM, low pressure difference linear voltage regulator (Low Dropout Regulator; Initialism is LDO), reset circuit and USB communication interface; Said dsp chip, crystal oscillator, EEROM, LDO, reset circuit and USB communication interface; Form the image acquisition units of being with the USB communication interface with the cmos sensor of said employing color cmos chip, said LDO also is connected with the light source board interface with the USB communication interface respectively, and said dsp chip passes through I
2The I of C port and color cmos chip
2The C port connects, and the color cmos chip is configured and Flame Image Process the I of said dsp chip
2The I of C port and color cmos chip
2C interface respectively with the I of EEROM
2The C port connects; The extremely said EEROM of parameter, the size of gathering fingerprint image and exposure data transmission that is provided with of fingerprint capturer is preserved; Said dsp chip is transferred to the color cmos chip through output port with reset signal; The color cmos chip is resetted; Row signal LV, field signal FV, data sync clock signal PCLK are connected with the input port of said dsp chip with view data DATA, and said color cmos chip image transmitted data transfer to said EEROM preservation after handling correction through said dsp chip, and view data are exported through the USB communication interface by said dsp chip.
Below the oblique long central plane of said half pentagonal prism, also be provided with the equal tabula rasa of the light that is used to be uniformly dispersed; Said equal tabula rasa is parallel with the oblique long central plane of said half pentagonal prism; And with the overlapping stickup of said LGP be one; Said light source is uniformly dispersed light through said equal tabula rasa, mildly is radiated at the large-area bottom surface of said half pentagonal prism.
Said equal tabula rasa over against the shadow surface of said half pentagonal prism, one side for covering husky hair side or being the corrugated surface of triangle fin formation; The width of said triangle fin is 0.20～0.28 millimeter; Highly be 0.10～0.14 millimeter,, improve accuracy of detection to illuminate fingerprint better.
The technical matters of the utility model solves through following further technical scheme.
Said dsp chip is that the model that TIX's (Texas Instruments Incorporated, initialism are TI) produces is the dsp chip of TMS320C5515AZCH.
Said cmos sensor is that to adopt resolution be the cmos sensor of color cmos chip of at least 30 ten thousand pixels of 500dpi.
Preferably, said cmos sensor is that the model that adopts microelectronics (Shanghai) Co., Ltd. of lattice section to produce is that the resolution of GC0303 is the cmos sensor of color cmos chip of 300,000 pixels of 500dpi.
Said EEROM is that the model that American ATMEL is produced is the storage chip of AT24C64.
Said LGP is the film like poly (methyl methacrylate) plate, is positioned at the lower left of said light source and on same surface level.
The oblique long central plane of said half pentagonal prism is 112.5 ° with the angle of oblique short-girdle plane, and the oblique long central plane of said half pentagonal prism and the angle of bottom surface are 22.5 °, and the oblique short-girdle plane of said half pentagonal prism and the angle of bottom surface are 45 °.
The height of said half pentagonal prism is 8～14 millimeters; Bottom width is 18～26 millimeters; Length is 24～36 millimeters, satisfies and gathers the requirement that refers to fingerprint image entirely, and adopting the cross section is half pentagonal prism of drift angle greater than 90 ° not isosceles triangle; Can under the prerequisite that does not increase the high thickness of prism, significantly increase the length of prism, increase the area of fingerprint image acquisition face relatively.
The transparent elastic resin molding of the bottom surface of said half pentagonal prism is a kind of in organic siliconresin and the acryl resin.
A said reflective mirror and secondary reflecting mirror are the rectangular-shaped thin plate catoptrons that has only a mirror surface, comprise reflective surface and shading face, and shading face surface-coated is useful on the pitch-dark layer of shading.
The primary optical axis angle of the oblique short-girdle plane of the primary optical axis of a said reflective mirror and said half pentagonal prism is 4 °～9 °; The angle of a said secondary reflecting mirror and a said reflective mirror is greater than 90 °; To reduce the aberration rate of fingerprint image, improve the sharpness of fingerprint image.
Said lens are concavees lens, and angle is 4 °～9 ° between the said photoelectric detector surface, and the said concavees lens main casing that is installed in said housing is provided with the outside in focusing hole, the sharpness of being convenient to proofread and correct fingerprint image.
Said half pentagonal prism, a said reflective mirror, said secondary reflecting mirror and said concavees lens are formed the optical finger print image-forming module of complying with the light path setting; Be pressed against the part of the finger reflection ray on the bottom surface of said half pentagonal prism; The oblique short-girdle plane of said half pentagonal prism of process injects to a said reflective mirror and carries out total reflection; Total reflection light is mapped to and carries out the total reflection second time on the said secondary reflecting mirror and converge and get into said concavees lens; And be the said photoelectric detector of 4.0～8.0mm by the back focal length that said concavees lens directly inject to the said concavees lens of distance, the fingerprint image that the image in the light that is presented on is promptly gathered converts electric signal output to.Need not to install image-forming objective lens, both reduced the volume and the cost of fingerprint acquisition device, do not influence the effect of fingerprint collecting again.
Said housing comprises fixes the backlight that said half pentagonal prism, a said reflective mirror, said secondary reflecting mirror and said concavees lens are formed main casing, lightguide plate fixing and the light source board of the optical finger print image-forming module of complying with the light path setting; And blocking the cover plate that extraneous light gets into main casing, said half pentagonal prism is the main casing that firmly is installed in said housing through its small end face and two sides.
Be fixedly connected by corresponding draw-in groove buckle-type between said main casing and the said backlight, need not to install screw.
Said cover plate is fixedly connected with main casing through draw-in groove or double faced adhesive tape, and simple and convenient assembly can further reduce cost, and enhances productivity.
The utility model beneficial effect compared with prior art is:
The utility model is provided with the image acquisition units of the band USB communication interface that comprises the cmos sensor that adopts the color cmos chip, and output image does not have compression, and image definition is high; The system resource occupancy is low; Also be provided with
overlapping stickup of tabula rasa be the equal tabula rasa of one, the light that is radiated at big collection face is uniformly dispersed and is soft, half pentagonal prism firmly is installed in the main casing of said housing through its small end face and two other side; Be fixedly connected by corresponding draw-in groove buckle-type between main casing and the backlight; Need not to install the screw assembling, cover plate is fixedly connected simple and convenient assembly through draw-in groove or double faced adhesive tape with main casing; Reduce cost; Enhance productivity, the main casing outside is provided with the focusing hole of adjustment concavees lens, is convenient to improve the sharpness and the fingerprint recognition efficient of fingerprint image.
Description of drawings
Fig. 1 is the disintegration structural drawing of the utility model embodiment;
Fig. 2 is the index path of Fig. 1;
Fig. 3 is the prism stereographic map of Fig. 1;
Fig. 4 is the housing disintegration structural drawing of the utility model embodiment;
Fig. 5 is that the image acquisition units of the utility model embodiment is formed block scheme.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described.
A kind of big collection face fingerprint capturer shown in Fig. 1～5; Comprise that the cross section is half pentagonal prism 6 of drift angle greater than 90 ° not isosceles triangle; Be fitted in the reflective mirror 4 that the upper end of oblique short-girdle plane 14 1 sides of half pentagonal prism 6 tilts to oblique short-girdle plane 14; Be fitted in right side, reflective mirror 4 lower end with it angle greater than 90 ° and the downward-sloping secondary reflecting mirror 5 of right-hand member; Be fitted in the lens 7 of the oblique long central plane 13 1 side right-hand members below of half pentagonal prism 6; Be fitted in the light source 2 of oblique long central plane 13 1 sides of half pentagonal prism 6; Be fitted in the photoelectric detector in lens 7 outsides; And housing 1
The oblique long central plane 13 of half pentagonal prism 6 is that light source is injected face; The oblique short-girdle plane 14 of half pentagonal prism 6 is fingerprint image outgoing planes; It is the transparent elastic resin film layer 19 of living body finger print acquisition window that the large-area bottom surface 15 of half pentagonal prism 6 is coated with as the fingerprint image acquisition face, and transparent elastic resin molding 19 is a kind of in organic siliconresin and the acryl resin.Can oppress transparent elastic resin molding 19 because of the burr of fingerprint, it sunk, when incident illumination is mapped to fingerprint; Burr and transparent elastic resin molding 19 soak into, and can absorb incident light better, and the dimpled grain of fingerprint can not oppressed transparent elastic resin molding 19; And by air insulated; Incident light is formed complete internal reflection,, reduce distortion rate to improve the discrimination of fingerprint image.
Photoelectric detector is that the model that adopts microelectronics (Shanghai) Co., Ltd. of lattice section to produce is that the resolution of GC0303 is the cmos sensor of color cmos chip of 300,000 pixels of 500dpi.
The model that is provided with the American TI Company product is the dsp chip of TMS320C5515AZCH, the crystal oscillator that is connected with dsp chip respectively, EEROM, LDO, reset circuit and USB communication interface; Dsp chip, crystal oscillator, EEROM, LDO, reset circuit and USB communication interface; Form the image acquisition units 9 of being with the USB communication interface with the cmos sensor that adopts the color cmos chip; LDO also is connected with the light source board interface with the USB communication interface respectively, and EEROM is that the model that American ATMEL is produced is the storage chip of AT24C64.Dsp chip passes through I
2The I of C port and color cmos chip
2The C port connects, and the color cmos chip is configured and Flame Image Process the I of dsp chip
2The I of C port and color cmos chip
2C interface respectively with the I of EEROM
2The C port connects; The size and the exposure data transmission that parameter are set, gather fingerprint image of fingerprint capturer are preserved to EEROM; Dsp chip is transferred to the color cmos chip through output port with reset signal; The color cmos chip is resetted; Row signal LV, field signal FV, data sync clock signal PCLK are connected with the input port of dsp chip with view data DATA, and color cmos chip image transmitted data transfer to the EEROM preservation after handling correction through dsp chip, and view data are exported through the USB communication interface by dsp chip.
Below the oblique long central plane 13 of half pentagonal prism 6, also be provided with the equal tabula rasa 16 of the light that is used to be uniformly dispersed; All tabula rasa 16 is parallel with the oblique long central plane 13 of half pentagonal prism 6; And with the 3 overlapping stickups of
tabula rasa be one; Light source 2 is uniformly dispersed light through equal tabula rasa 16, mildly is radiated at the large-area bottom surface 15 of half pentagonal prism 6.
All tabula rasa 16 for covering husky hair side or for width is 0.20～0.28 millimeter, highly being the corrugated surface of 0.10～0.14 millimeter triangle fin formation, to illuminate fingerprint better, improves accuracy of detection over against the shadow surface of half pentagonal prism, 6 one sides.
The oblique long central plane of half five jiaos of ribs 6 is 112.5 ° with the angle of oblique short-girdle plane, and the angle of tiltedly long central plane and bottom surface is 22.5 °, and tiltedly the angle of short-girdle plane and bottom surface is 45 °.
The height of half pentagonal prism 6 is 10.5 millimeters; Bottom width is 22 millimeters; Length is 30 millimeters, satisfies and gathers the requirement that refers to fingerprint image entirely, and adopting the cross section is half pentagonal prism of drift angle greater than 90 ° not isosceles triangle; Can under the prerequisite that does not increase prism height, significantly increase the length of prism, increase the area of fingerprint image acquisition face relatively.
One time reflective mirror 4 is the rectangular-shaped thin plate catoptrons that have only a mirror surface with secondary reflecting mirror 5, comprises reflective surface and shading face, and shading face surface-coated is useful on the pitch-dark layer of shading.
The primary optical axis angle of the oblique short-girdle plane of the primary optical axis of a reflective mirror 4 and half pentagonal prism 6 is 4 °～9 °, and the angle of a secondary reflecting mirror 5 and a reflective mirror 4 is 95.94 °, to reduce the aberration rate of fingerprint image, improves the sharpness of fingerprint image.
Lens 7 are concavees lens, and angle is 4 °～9 ° between the COMS sensor surface, and the concavees lens main casing 10 that is installed in housing is provided with the outside in focusing hole 8, the sharpness of being convenient to proofread and correct fingerprint image.
Half pentagonal prism 6, reflective mirror 4, secondary reflecting mirror 5 and concavees lens are formed and are complied with the optical finger print image-forming module that light path is provided with; Be pressed against the part of the finger reflection ray on the bottom surface of half five jiaos of rib 6 mirrors; Inject to a reflective mirror 4 through the oblique short-girdle plane of more than half pentagonal prisms 6 and carry out total reflection; Total reflection light is mapped to and carries out the total reflection second time on the secondary reflecting mirror 5 and converge the entering concavees lens; And directly to be injected to apart from the back focal length of concavees lens by concavees lens be the COMS sensor of 4.0～8.0mm, and the fingerprint image that the image in the light that is presented on is promptly gathered converts electric signal output to.Need not to install image-forming objective lens, both reduced the volume and the cost of fingerprint acquisition device, do not influence the effect of fingerprint collecting again.
Housing 1 comprises that fixing half pentagonal prism 6, reflective mirror 4, secondary reflecting mirror 5 and concavees lens form the backlight 11 of main casing 10, lightguide plate fixing 3 and the light source board of complying with the optical finger print image-forming module that light path is provided with; And blocking the cover plate 12 that extraneous light gets into main casing, said half pentagonal prism 6 is the main casings 10 that firmly are installed in housing through its small end face 17 and two sides.
Be fixedly connected by corresponding draw-in groove buckle-type between main casing 10 and the backlight 11, need not to install screw.
Cover plate 12 is fixedly connected with main casing 10 bodies through draw-in groove or double faced adhesive tape, and simple and convenient assembly can further reduce cost, and enhances productivity.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.Those of ordinary skill for technical field under the utility model; Under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; And performance or purposes are identical, all should be regarded as belonging to the scope of patent protection that the utility model is confirmed by claims of being submitted to.
Claims (10)
1. the fingerprint acquisition device of a big collection face; Comprise the cross section be drift angle greater than half pentagonal prism of 90 ° not isosceles triangle, be fitted in a reflective mirror that the upper end of oblique short-girdle plane one side of said half pentagonal prism tilts to oblique short-girdle plane, be fitted in right side, a said reflective mirror lower end with it angle greater than the downward-sloping secondary reflecting mirror of 90 ° and right-hand member, be fitted in the oblique long central plane one side right-hand member below of said half pentagonal prism lens, be fitted in oblique long central plane one side of said half pentagonal prism light source, be fitted in the photoelectric detector in the said lens outside; And housing; The oblique long central plane of said half pentagonal prism is that light source is injected face; The oblique short-girdle plane of said half pentagonal prism is the fingerprint image outgoing plane; The large-area coated on bottom side of said half pentagonal prism is covered with the transparent elastic resin film layer as the fingerprint image acquisition face; Said light source comprises the top of the LGP of oblique long central plane one side that is positioned at said half pentagonal prism; And the light emitting diode that is positioned at least 1 visible or infrared light of said LGP outer end, it is characterized in that:
Said photoelectric detector is the cmos sensor that adopts colored CMOS chips;
Be provided with digital signal processing dsp chip, the crystal oscillator that is connected with said dsp chip respectively, storage unit EEROM, low pressure difference linear voltage regulator LDO, reset circuit and USB communication interface; Said dsp chip, crystal oscillator, EEROM, LDO, reset circuit and USB communication interface; Form the image acquisition units of being with the USB communication interface with the cmos sensor of said employing color cmos chip; Said LDO also is connected with the light source board interface with the USB communication interface respectively, and said dsp chip passes through I
2The I of C port and color cmos chip
2The C port connects, the I of said dsp chip
2The I of C port and color cmos chip
2C interface respectively with the I of EEROM
2The C port connects;
Below the oblique long central plane of said half pentagonal prism, also be provided with the equal tabula rasa of the light that is used to be uniformly dispersed, said equal tabula rasa is parallel with the oblique long central plane of said half pentagonal prism, and with the overlapping stickup of said LGP be one;
For covering husky hair side or being the corrugated surface of triangle fin formation, the width of said triangle fin is 0.20～0.28 millimeter to said equal tabula rasa, highly is 0.10～0.14 millimeter over against the shadow surface of said half pentagonal prism, one side.
2. the fingerprint acquisition device of big collection face as claimed in claim 1 is characterized in that:
Said dsp chip is that the model that TIX produces is the dsp chip of TMS320C5515AZCH.
3. according to claim 1 or claim 2 the fingerprint acquisition device of big collection face is characterized in that:
Said cmos sensor is that to adopt resolution be the cmos sensor of color cmos chip of at least 30 ten thousand pixels of 500dpi.
4. the fingerprint acquisition device of big collection face as claimed in claim 3 is characterized in that:
Said LGP is the film like poly (methyl methacrylate) plate, is positioned at the lower left of said light source and on same surface level.
5. the fingerprint acquisition device of big collection face as claimed in claim 4 is characterized in that:
The oblique long central plane of said half pentagonal prism is 112.5 ° with the angle of oblique short-girdle plane, and the oblique long central plane of said half pentagonal prism and the angle of bottom surface are 22.5 °, and the oblique short-girdle plane of said half pentagonal prism and the angle of bottom surface are 45 °;
The height of said half pentagonal prism is 8～14 millimeters, and bottom width is 18～26 millimeters, and length is 24～36 millimeters.
6. the fingerprint acquisition device of big collection face as claimed in claim 5 is characterized in that:
The transparent elastic resin molding of the bottom surface of said half pentagonal prism is a kind of in organic siliconresin and the acryl resin.
7. the fingerprint acquisition device of big collection face as claimed in claim 6 is characterized in that:
A said reflective mirror and secondary reflecting mirror are the rectangular-shaped thin plate catoptrons that has only a mirror surface, comprise reflective surface and shading face, and shading face surface-coated is useful on the pitch-dark layer of shading;
The primary optical axis angle of the oblique short-girdle plane of the primary optical axis of a said reflective mirror and said half pentagonal prism is 4 °～9 °, and the angle of a said secondary reflecting mirror and a said reflective mirror is greater than 90 °.
8. the fingerprint acquisition device of big collection face as claimed in claim 7 is characterized in that:
Said lens are concavees lens, and angle is 4 °～9 ° between the said photoelectric detector surface, and the said concavees lens main casing that is installed in said housing is provided with the outside in focusing hole.
9. the fingerprint acquisition device of big collection face as claimed in claim 8 is characterized in that:
Said housing comprises fixes the backlight that said half pentagonal prism, a said reflective mirror, said secondary reflecting mirror and said concavees lens are formed main casing, lightguide plate fixing and the light source board of the optical finger print image-forming module of complying with the light path setting; And blocking the cover plate that extraneous light gets into main casing, said half pentagonal prism is the main casing that is installed in said housing through its small end face and two sides.
10. the fingerprint acquisition device of big collection face as claimed in claim 9 is characterized in that:
Be fixedly connected by corresponding draw-in groove buckle-type between said main casing and the said backlight;
Said cover plate is fixedly connected with main casing through draw-in groove or double faced adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200534912U CN202486805U (en) | 2012-02-19 | 2012-02-19 | Large-collecting-face fingerprint collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200534912U CN202486805U (en) | 2012-02-19 | 2012-02-19 | Large-collecting-face fingerprint collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486805U true CN202486805U (en) | 2012-10-10 |
Family
ID=46961210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200534912U Expired - Fee Related CN202486805U (en) | 2012-02-19 | 2012-02-19 | Large-collecting-face fingerprint collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486805U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015054025A1 (en) * | 2013-10-08 | 2015-04-16 | Josef Muller | Mirror-based reading device |
| CN106339689A (en) * | 2016-08-31 | 2017-01-18 | 长春鸿达光电子与生物统计识别技术有限公司 | Finger and palm print image collection device |
| CN107392196A (en) * | 2016-08-05 | 2017-11-24 | 金佶科技股份有限公司 | Image capturing device and manufacturing method thereof |
-
2012
- 2012-02-19 CN CN2012200534912U patent/CN202486805U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015054025A1 (en) * | 2013-10-08 | 2015-04-16 | Josef Muller | Mirror-based reading device |
| US9606365B2 (en) | 2013-10-08 | 2017-03-28 | Josef Muller | Mirror-based reading device |
| CN107392196A (en) * | 2016-08-05 | 2017-11-24 | 金佶科技股份有限公司 | Image capturing device and manufacturing method thereof |
| CN106339689A (en) * | 2016-08-31 | 2017-01-18 | 长春鸿达光电子与生物统计识别技术有限公司 | Finger and palm print image collection device |
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