CN202512590U - Fingerprint and vein collecting device - Google Patents
Fingerprint and vein collecting device Download PDFInfo
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- CN202512590U CN202512590U CN2012200457013U CN201220045701U CN202512590U CN 202512590 U CN202512590 U CN 202512590U CN 2012200457013 U CN2012200457013 U CN 2012200457013U CN 201220045701 U CN201220045701 U CN 201220045701U CN 202512590 U CN202512590 U CN 202512590U
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- fingerprint collecting
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Abstract
The utility model provides a fingerprint and vein collecting device, comprising a shell body, a fingerprint collector and a finger vein image collector, wherein the middle of the shell body is provided with a finger hole; a finger vein collecting window is arranged at a position corresponding to the finger hole inside the shell body, and the finger vein collecting window and a fingerprint collecting surface are on a same horizontal plane; the finger vein image collector comprises a circuit control module, an optical system, a vein-collecting CMOS sensor arranged under the shell body, and a vein-collecting backlight unit arranged above the shell body; the circuit control module is a circuit control module of the fingerprint collector, and the optical system comprises an infrared filter, a vein-collecting planar reflective mirror and a vein-collecting planoconvex lens. By adopting a modular design, the fingerprint identification and vein identification are integrated, the device has the advantages of anti-counterfeiting function, strong security, and high identification precision without being lost or stolen, the burden of ciphers memory is saved, and the device can combined with a computer to complete functions of user finger vein collection, finger vein comparison, abnormity alarm, and signal output control.
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 and vein harvester.
Background technology
Fingerprint recognition is based on the outer layer feature of somatic fingerprint, is difficult to that the related personnel is forged fingerprint on residual smooth object surface and carries out false proofly, has potential potential safety hazard.And finger vena is positioned at below the human epidermal, almost can not forge, and vein is discerned as emerging biological identification technology, and security is very high, can not lose, and can not stolen, memoryless password burden.But, existing finger vena harvester, volume is bigger, and volume is all bigger, and the automatic exposure meeting of some device is excessively or not enough, some device even do not have the function of automatic exposure, the vein image sharpness is poor.So far do not see the promising shortcoming of avoiding the single creature feature identification as yet, just require to utilize multiple living things feature recognition to improve Verification System.That adopts fingerprint recognition and vein to discern to become one possesses anti-fraud functional mixed biology collection apparatus, registration and recognition device.
Summary of the invention
The utility model technical matters to be solved is the defective that remedies above-mentioned prior art, and a kind of fingerprint and vein harvester are provided.
The technical matters of the utility model solves through following technical scheme.
This fingerprint and vein harvester; Comprise housing and the fingerprint capturer that is arranged in the housing; Said fingerprint capturer comprises that the optics list that is arranged in the said housing refers to the fingerprint imaging module; And fingerprint collecting is used back light unit; Said optics list refers to that the fingerprint imaging module comprises that the triangle cylindricality prism complying with light path and be provided with, image-forming assembly, fingerprint collecting are with image acquisition units and light source; Said fingerprint collecting is provided with fingerprint collecting with complementary metal oxide semiconductor (CMOS) (Complementary Metal-Oxide-Semiconductor, initialism are CMOS) sensor with the fingerprint image receiving plane of image acquisition units, and the single finger print image transitions that receives is become electric signal output; Said fingerprint collecting is the circuit control module with the mainboard of image acquisition units; Be arranged on the below of said triangle cylindricality prism, comprise main control chip, the storage unit chip that is connected with said main control chip respectively, crystal oscillating circuit, encryption chip, step-down integrated circuit, and carry out the data communication unit of data transmission with the computing machine communication.
The characteristics of this fingerprint and vein harvester are:
Said housing middle part is provided with finger hole; The position relative with finger hole is the finger presses face in housing; Said finger presses face is the Baltimore groove as the finger vena acquisition window; Finger vena acquisition window and fingerprint collecting face are on same surface level, and finger vena acquisition window size is greater than 10.0mm * 25.0mm.Acquisition window is a Baltimore groove, and convenient finger stretches into and pushes, and the light of gathering finger venous image information is presented on the image receiving plane, and finger vena acquisition window and fingerprint collecting face make things convenient for the user to push collection on same surface level.
In said housing, be provided with the finger vein image acquisition device; Cmos sensor use in the vein collection that said finger vein image acquisition device comprises circuit control module, optical system, be arranged on the vein image receiving plane of housing below, and back light unit is used in the vein collection that is arranged on above the housing.
The circuit control module that said circuit control module is said fingerprint capturer; The main control chip of said circuit control module also is connected with back light unit with cmos sensor, said vein collection with said vein collection respectively; Said main control chip is used to control fingerprint collecting and gathers finger print and vein with cmos sensor, vein collection in real time with cmos sensor and vein and fingerprint are compared; Said storage unit chip is used for the memory function file; So that accomplish registration and identification after finger print and vein are gathered; Said crystal oscillating circuit is used for clock signal to main control chip being provided, and said encryption chip is used to download own software algorithm and code, to user's significant data protection is provided; Said step-down integrated circuit is used for from cmos sensor power supply being provided with cmos sensor, vein collection to main control chip and fingerprint collecting after the power supply step-down of USB Connection Block; Said data communication unit is used for uniting use with computing machine, to accomplish user's finger print and vein collection and comparison, abnormal alarm, control signal output function, has significantly improved fingerprint and vein acquisition rate and accuracy of identification.
Said optical system is a lens combination; Said lens combination comprises complies with that light path is installed in infrared fileter under the finger vena acquisition window, the vein collection that is arranged under the infrared fileter is used plano-convex lens with plane mirror and vein collection; Said vein collection becomes 45 ° of angles with plane mirror with surface level; Light is accurately reflexed to the vein collection of placing perpendicular to the bottom surface with in the plano-convex lens, and said vein collection is used to prolong light path with plane mirror, makes the volume miniaturization more of device; Light gets into the vein collection through the vein collection with the plane reflection mirror reflection and uses plano-convex lens; Again refraction advance to be arranged on the vein image receiving plane gather vein image the vein collection with on the cmos sensor, convert the finger venous image that receives to electric signal output, carry out the collection of finger venous image.
The technical matters of the utility model solves through following further technical scheme.
Said vein collection is identical with cmos sensor with said fingerprint collecting with cmos sensor; It is the cmos sensor of at least 8.215 ten thousand pixels; Image resolution ratio is at least 500dpi; Meet Chinese public security department and FBI (Federal Bureau of Investigation, initialism is FBI) about reaching the requirement that image resolution ratio is 500dpi.
Preferably; It is advanced video graphic array (the Super Video Graphics Array of the model of U.S. Aptina company product as MT9V117 that said vein collection uses cmos sensor and said fingerprint collecting to use cmos sensor; Initialism is SVGA) cmos sensor, by main control chip clock signal, reset signal, synchronizing signal and I are provided
2The C signal is controlled, and the data that collect directly are sent to said main control chip.
Preferably, said main control chip is that the model that U.S. Cypress semiconductor company produces is the main control chip of CY7C68013A.
Said storage unit chip is the storage unit chip that stores the calibration curve that is used for automatic exposure.
Preferably, said storage unit chip is that the model that U.S. Atmel company produces is the storage chip of AT24C64CN-SH-B (64K).
Said encryption chip is that the model that Shenzhen SDMC Technology Co., Ltd. produces is the encryption chip of DM2016N.
Said data communication unit comprises USB (Universal Serial Bus, initialism the are USB) Connection Block of static electrification protection, is arranged on the circuit control module.
Said vein collection comprises with back light unit near infrared light source and brightness adjustment unit is set; One group of wavelength that said near infrared light source is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm; The infrared-ray that is used for the transmission finger, said brightness adjustment unit is based on the brightness in the calibration curve adjustment near infrared light source that is used for automatic exposure of said storage unit chip-stored.
Infrared fileter in the said optical system, fingerprint collecting is adjusted according to picture quality with the spacing of plano-convex lens with plane mirror and fingerprint collecting.
Said fingerprint collecting uses back light unit to comprise to be installed in the wavelength of the little bottom surface of said triangle cylindricality prism to be the LED-backlit lamp of the infrared diode of 850nm or 940nm.
Said optics list refers to the triangle cylindricality prism of fingerprint imaging module; Include be parallel to each other over against large end face, small end face and downside; Said large end face is that single finger print IMAQ face is that the live body list refers to the fingerprint collecting window, and said small end face is that light source is injected face, and said downside is the fingerprint imaging face relative with imaging; Light path between said prism and said image-forming assembly is provided with the fingerprint collecting that is used to prolong light path and uses plane mirror; Said fingerprint collecting becomes 45 ° angle with plane mirror and said prism, becomes 45 ° angle with surface level, is provided with a concave-convex lens at said prism and fingerprint collecting with the light path between the plane mirror; The convex surface of said concave-convex lens is facing to prism; To reduce the distortion of optical system, improve the resolution of optical system, the light that said light source sends gets into prism through the small end face of said prism; Be pressed against the part of the finger reflection ray on the large end face of said prism; Downside by said prism injects to said fingerprint collecting with on the plane mirror, gets into image-forming assembly through said fingerprint collecting with the plane mirror total reflection, images in said fingerprint collecting and uses cmos sensor with the collection fingerprint on the fingerprint image receiving plane of image acquisition units.
Said image-forming assembly be arranged on comprise fingerprint collecting with the fingerprint collecting on the image receiving plane of plane mirror and said image acquisition units with on the light path between the cmos sensor; Comprise that successively the fingerprint collecting that becomes 45 ° of angles with plane mirror with fingerprint collecting is with plano-convex lens and sensor protection glass; The fingerprint collecting that light reflects with plano-convex lens through fingerprint collecting on the image receiving plane of said image acquisition units is into used cmos sensor, carries out the collection of fingerprint image.
The large end face of said triangle cylindricality prism is that the live body list refers to that the fingerprint collecting window is greater than 12.8mm * 16.5mm; Be fingerprint collecting with the pickup area area of cmos sensor greater than 12.8mm * 16.5mm, meet the relevant live body list of Chinese public security department and refer to that the fingerprint collecting window size must be greater than the requirement of 12.8mm * 16.5mm with U.S. FBI;
Said fingerprint collecting is of a size of 21mm * 27mm with plane mirror.
Said triangle cylindricality prism, concave-convex lens, fingerprint collecting are adjusted according to picture quality with the spacing of plano-convex lens and sensor protection glass with plane mirror, fingerprint collecting, and fingerprint collecting is adjusted by the focusing hole with the spacing of plano-convex lens and sensor protection glass.
Said triangle cylindricality prism, concave-convex lens, fingerprint collecting use plane mirror, fingerprint collecting to use the light path length overall setting range between plano-convex lens and the sensor protection glass to be 50mm～53mm; Concrete numerical value is according to lens materials, object distance and image distance decision; Wherein
Light path length overall setting range is 8mm～10mm in the said triangle cylindricality prism;
The spacing setting range of said triangle cylindricality prism and said concave-convex lens is 1mm～3mm;
Light path length overall setting range is 4mm in the said concave-convex lens;
The spacing setting range of said concave-convex lens and said image-forming assembly is 13mm～15mm;
Said fingerprint collecting uses that light path length overall setting range is 2mm in the plano-convex lens;
Said fingerprint collecting is adjusted through the focusing hole with the spacing of plano-convex lens and said sensor protection glass, and setting range is 3.5mm～5.5mm;
Light path length overall setting range is 0.3mm～1mm in the said sensor protection glass;
It is 0.1～0.8mm that said sensor protection glass and said fingerprint collecting use the light path length overall between the cmos sensor.
The beneficial effect of the utility model and prior art contrast is:
Adopt modular design.Fingerprint recognition and vein identification are become one; Existing fingerprint collecting, the recognition device anti-counterfeit capability is poor, device volume is big defective have been remedied; Have antiforge function, high safety, accuracy of identification is high; And can not lose, can not be stolen, memoryless password burden, can also unite with computing machine and be used to complete the collection of user's finger vena, finger vena comparison, abnormal alarm, control signal output function.
Description of drawings
Fig. 1 is the stereographic map of the preceding stravismus of the utility model embodiment;
Fig. 2 is the stereographic map of the back stravismus of the utility model embodiment;
Fig. 3 is the composition block scheme of the circuit control module of the utility model embodiment;
Fig. 4 is the two-dimentional index path of the utility model embodiment;
Fig. 5 is the three-dimensional index path of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described.
A kind of fingerprint and vein harvester shown in Fig. 1～5; Comprise housing and the fingerprint capturer that is arranged in the housing; Fingerprint capturer comprises that the optics list that is arranged in the said housing refers to the fingerprint imaging module; And fingerprint collecting is with back light unit 18, and the optical finger print image-forming module comprises that the triangle cylindricality prism 1 complying with light path and be provided with, image-forming assembly, fingerprint collecting are with image acquisition units and light source
Fingerprint collecting is provided with fingerprint collecting with cmos sensor 14 with the fingerprint image receiving plane of image acquisition units; The single finger print image transitions that receives is become electric signal output; Fingerprint collecting is the circuit control module with the mainboard of image acquisition units; Be arranged on the below of triangle cylindricality prism 1; Comprise main control chip 12, the storage unit chip 17 that is connected with main control chip 12 respectively, crystal oscillating circuit 13, encryption chip 16, step-down integrated circuit 11, and carry out the data communication unit 22 of data transmission with the computing machine communication.
The housing middle part is provided with finger hole; The position relative with finger hole is the finger presses face in housing; The finger presses face is the Baltimore groove as the finger vena acquisition window; Finger vena acquisition window and fingerprint collecting face are on same surface level, and finger vena acquisition window size is greater than 10.0mm * 25.0mm.Acquisition window is a Baltimore groove, and convenient finger stretches into and pushes, and the light of gathering finger venous image information is presented on the image receiving plane, and finger vena acquisition window and fingerprint collecting face make things convenient for the user to push collection on same surface level.
In housing, be provided with the finger vein image acquisition device; The vein collection of vein image receiving plane that the finger vein image acquisition device comprises circuit control module, optical system, be arranged on the housing below is with cmos sensor 15, and is arranged on vein collection above the housing with back light unit 21.
The circuit control module is the circuit control module of fingerprint collector; The main control chip 12 of circuit control module also is connected with back light unit 21 with cmos sensor 15, vein collection with the vein collection respectively; Main control chip 12 is used to control fingerprint collecting and gathers finger prints and vein with cmos sensor 14, vein collection in real time with cmos sensor 15 and vein and fingerprint are compared; Storage unit chip 17 is used for the memory function file; So that accomplish registration and identification after finger print and vein are gathered; Crystal oscillating circuit 13 is used for clock signal to main control chip 12 being provided, and encryption chip 16 is used to download own software algorithm and code, to user's significant data protection is provided; Step-down integrated circuit 11 is used for from cmos sensor 15 power supply being provided with cmos sensor 14, vein collection to main control chip 12 and fingerprint collecting after the power supply step-down of USB Connection Block 5; Data communication unit 22 is used for uniting use with computing machine, to accomplish user's finger print and vein collection and comparison, abnormal alarm, control signal output function, has significantly improved fingerprint and vein acquisition rate and accuracy of identification.
Optical system is a lens combination 6; Comprise comply with light path be installed in infrared fileter 9 under the finger vena acquisition window, be arranged on vein collection under the infrared fileter 9 with plane mirror 8 and vein collection with plano-convex lens 20; The vein collection becomes 45 ° of angles with plane mirror 8 with surface level; Light is accurately reflexed to the vein collection of placing perpendicular to the bottom surface with in the plano-convex lens 20, and the vein collection is used to prolong light path with plane mirror 8, makes the volume miniaturization more of device; Light gets into the vein collection with plano-convex lens 20 through the vein collection with plane mirror 8 reflections; Again refraction advance to be arranged on the vein image receiving plane gather vein image the vein collection with on the cmos sensor 15, convert the finger venous image that receives to electric signal and export, carry out the collection of finger venous image.
The vein collection is identical with cmos sensor 14 with fingerprint collecting with cmos sensor 15; Be that the model that U.S. Aptina company produces is the SVGA cmos sensor of at least 8.215 ten thousand pixels of MT9V117; Image resolution ratio is at least 500dpi; Meet that Chinese public security department is relevant with U.S. FBI must to reach the requirement that image resolution ratio is 500dpi, clock signal, reset signal, synchronizing signal and I are provided by main control chip 12
2The C signal is controlled, and the data that collect directly are sent to main control chip 12.
Main control chip is that the model that 12 U.S. Cypress semiconductor companies produce is the main control chip of CY7C68013A.
Storage unit chip 17 is that the model that stores the calibration curve that is used for automatic exposure that U.S. Atmel company produces is the storage chip of AT24C64CN-SH-B (64K).
Encryption chip 16 is that the model that Shenzhen SDMC Technology Co., Ltd. produces is the encryption chip of DM2016N.
Data communication unit 22 comprises the USB Connection Block 5 of static electrification protection, is arranged on the circuit control module.
The vein collection comprises with back light unit 21 near infrared light source and brightness adjustment unit is set; One group of wavelength that the near infrared light source is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm; The infrared-ray that is used for the transmission finger, the brightness adjustment unit is based on the brightness in the calibration curve adjustment near infrared light source that is used for automatic exposure of storage unit chip-stored.
Fingerprint collecting uses back light unit 18 to comprise to be installed in the wavelength of the little bottom surface of triangle cylindricality prism 1 to be the LED-backlit lamp of the infrared diode of 850nm or 940nm.
The prism of optical finger print image-forming module is a triangle cylindricality prism 1; Include be parallel to each other over against large end face, small end face and downside; Large end face is that single finger print IMAQ face is that the live body list refers to the fingerprint collecting window; Small end face is that light source is injected face, and downside is and the relative fingerprint imaging face of imaging, and the light path between triangle cylindricality prism 1 and image-forming assembly is provided with the fingerprint collecting that is used to prolong light path with plane mirror 2; Fingerprint collecting is with the angle of 1 one-tenth 45 ° on plane mirror 2 and triangle cylindricality prism; Become 45 ° angle with surface level, be provided with concave-convex lens 3 at triangle cylindricality prism 1 and fingerprint collecting with the light path between the plane mirror 2, the convex surface of concave-convex lens 3 is facing to triangle cylindricality prism 1; To reduce the distortion of optical system; Improve the resolution of optical system, the light that light source sends gets into through the small end face of triangle cylindricality prism 1, is pressed against the part of the finger reflection ray on the large end face; Inject to fingerprint collecting with on the plane mirror 2 by downside; Get into image-forming assembly through fingerprint collecting with plane mirror 2 total reflections, image-forming assembly be arranged on comprise fingerprint collecting with the fingerprint collecting on the image receiving plane of plane mirror 2 and image acquisition units with on the light path between the cmos sensor 14, comprise successively with fingerprint collecting with the fingerprint collecting of 2 one-tenth 45 ° of angles of plane mirror with plano-convex lens 19 and sensor protection glass 7; Light advances fingerprint collecting on the image receiving plane of image acquisition units with cmos sensor 14 with plano-convex lens 19 refraction through fingerprint collecting, carry out the collection of fingerprint image.
The large end face of triangle cylindricality prism 1 is that the live body list refers to that the fingerprint collecting window is greater than 12.8mm * 16.5mm; The pickup area area that is cmos sensor meets the relevant live body list with U.S. FBI of Chinese public security department and refers to that the fingerprint collecting window size must be greater than the requirement of 12.8mm * 16.5mm greater than 12.8mm * 16.5mm.
Fingerprint collecting is of a size of 21mm * 27mm with plane mirror 2.
Triangle cylindricality prism 1, concave-convex lens 3, fingerprint collecting are adjusted according to picture quality with the spacing of plano-convex lens 19 and sensor protection glass 7 with plane mirror 2, fingerprint collecting, and fingerprint collecting is adjusted by the focusing hole with the spacing of plano-convex lens 19 and sensor protection glass 7.
Triangle cylindricality prism 1, concave-convex lens 3, fingerprint collecting use plane mirror 2, fingerprint collecting to use the light path length overall setting range between plano-convex lens 19 and the sensor protection glass 7 to be 50mm～53mm; Concrete numerical value is according to lens materials, object distance and image distance decision; Wherein
Light path length overall setting range is 8mm～10mm in the triangle cylindricality prism 1;
The spacing setting range of triangle cylindricality prism 1 and concave-convex lens 3 is 1mm～3mm;
Light path length overall setting range is 4mm in the concave-convex lens 3;
The spacing setting range of concave-convex lens 3 and image-forming assembly is 13mm～15mm;
Fingerprint collecting uses that light path length overall setting range is 2mm in the plano-convex lens 19;
Fingerprint collecting is adjusted through the focusing hole with the spacing of plano-convex lens 19 and sensor protection glass 7, and setting range is 3.5mm～5.5mm;
Light path length overall setting range is 0.3mm～1mm in the sensor protection glass 7;
It is 0.1～0.8mm that sensor protection glass 7 and fingerprint collecting use the light path length overall between the cmos sensor 14.
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. fingerprint and vein harvester; Comprise housing and the fingerprint capturer that is arranged in the housing; Said fingerprint capturer comprises that the optics list that is arranged in the said housing refers to the fingerprint imaging module; And fingerprint collecting is used back light unit; Said optics list refers to that the fingerprint imaging module comprises the triangle cylindricality prism complying with light path and be provided with, image-forming assembly, fingerprint collecting with image acquisition units and light source, and said fingerprint collecting is provided with fingerprint collecting with the fingerprint image receiving plane of image acquisition units and uses the complementary metal oxide semiconductor (CMOS) cmos sensor, and said fingerprint collecting is the circuit control module with the mainboard of image acquisition units; Be arranged on the below of said triangle cylindricality prism; Comprise main control chip, the storage unit chip that is connected with said main control chip respectively, crystal oscillating circuit, encryption chip, step-down integrated circuit, and carry out the data communication unit of data transmission, it is characterized in that with the computing machine communication:
Said housing middle part is provided with finger hole; The position relative with finger hole is the finger presses face in housing; Said finger presses face is the Baltimore groove as the finger vena acquisition window; Finger vena acquisition window and fingerprint collecting face are on same surface level, and finger vena acquisition window size is greater than 10.0mm * 25.0mm;
In said housing, be provided with the finger vein image acquisition device; Cmos sensor use in the vein collection that said finger vein image acquisition device comprises circuit control module, optical system, be arranged on the vein image receiving plane of housing below, and back light unit is used in the vein collection that is arranged on above the housing;
The circuit control module that said circuit control module is said fingerprint capturer, the main control chip of said circuit control module also are connected with back light unit with cmos sensor, said vein collection with said vein collection respectively;
Said optical system is a lens combination; Said lens combination comprises complies with that light path is installed in infrared fileter under the finger vena acquisition window, the vein collection that is arranged under the infrared fileter is used plano-convex lens with plane mirror and vein collection, and said vein collection becomes 45 ° of angles with plane mirror with surface level.
2. fingerprint as claimed in claim 1 and vein harvester is characterized in that:
Said vein collection is identical with cmos sensor with said fingerprint collecting with cmos sensor.
3. according to claim 1 or claim 2 fingerprint and vein harvester is characterized in that:
Said vein collection is the cmos sensor of at least 8.215 ten thousand pixels with cmos sensor, and image resolution ratio is at least 500dpi.
4. fingerprint as claimed in claim 3 and vein harvester is characterized in that:
Said vein collection comprises with back light unit near infrared light source and brightness adjustment unit is set that one group of wavelength that said near infrared light source is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm.
5. fingerprint as claimed in claim 4 and vein harvester is characterized in that:
Infrared fileter in the said optical system, fingerprint collecting is adjusted according to picture quality with the spacing of plano-convex lens with plane mirror and fingerprint collecting.
6. fingerprint as claimed in claim 5 and vein harvester is characterized in that:
Said fingerprint collecting uses back light unit to comprise to be installed in the wavelength of the little bottom surface of said triangle cylindricality prism to be the LED-backlit lamp of the infrared diode of 850nm or 940nm.
7. fingerprint as claimed in claim 6 and vein harvester is characterized in that:
Said optics list refers to the triangle cylindricality prism of fingerprint imaging module; Include be parallel to each other over against large end face, small end face and downside; Said large end face is that single finger print IMAQ face is that the live body list refers to the fingerprint collecting window; Said small end face is that light source is injected face, and said downside is and the relative fingerprint imaging face of imaging, and the light path between said prism and said image-forming assembly is provided with the fingerprint collecting that is used to prolong light path and uses plane mirror; Said fingerprint collecting becomes 45 ° angle with plane mirror and said prism; Become 45 ° angle with surface level, be provided with a concave-convex lens at said prism and fingerprint collecting with the light path between the plane mirror, the convex surface of said concave-convex lens is facing to prism.
8. fingerprint as claimed in claim 7 and vein harvester is characterized in that:
The large end face of said triangle cylindricality prism is that the live body list refers to the fingerprint collecting window greater than 12.8mm * 16.5mm, promptly fingerprint collecting with the pickup area area of cmos sensor greater than 12.8mm * 16.5mm.
9. fingerprint as claimed in claim 8 and vein harvester is characterized in that:
Said triangle cylindricality prism, concave-convex lens, fingerprint collecting are adjusted according to picture quality with the spacing of plano-convex lens and sensor protection glass with plane mirror, fingerprint collecting, and fingerprint collecting is adjusted by the focusing hole with the spacing of plano-convex lens and sensor protection glass.
10. fingerprint as claimed in claim 9 and vein harvester is characterized in that:
Said triangle cylindricality prism, concave-convex lens, fingerprint collecting use plane mirror, fingerprint collecting to use the light path length overall setting range between plano-convex lens and the sensor protection glass to be 50mm～53mm; Concrete numerical value is according to lens materials, object distance and image distance decision; Wherein
Light path length overall setting range is 8mm～10mm in the said triangle cylindricality prism;
The spacing setting range of said triangle cylindricality prism and said concave-convex lens is 1mm～3mm;
Light path length overall setting range is 4mm in the said concave-convex lens;
The spacing setting range of said concave-convex lens and said image-forming assembly is 13mm～15mm;
Said fingerprint collecting uses that light path length overall setting range is 2mm in the plano-convex lens;
Said fingerprint collecting is adjusted through the focusing hole with the spacing of plano-convex lens and said sensor protection glass, and setting range is 3.5mm～5.5mm;
Light path length overall setting range is 0.3mm～1mm in the said sensor protection glass;
It is 0.1～0.8mm that said sensor protection glass and said fingerprint collecting use the light path length overall between the cmos sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200457013U CN202512590U (en) | 2012-02-13 | 2012-02-13 | Fingerprint and vein collecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200457013U CN202512590U (en) | 2012-02-13 | 2012-02-13 | Fingerprint and vein collecting device |
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| Publication Number | Publication Date |
|---|---|
| CN202512590U true CN202512590U (en) | 2012-10-31 |
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| CN2012200457013U Expired - Fee Related CN202512590U (en) | 2012-02-13 | 2012-02-13 | Fingerprint and vein collecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016086341A1 (en) * | 2014-12-01 | 2016-06-09 | Dongguan Zkteco Electronic Technology Co., Ltd | System and method for acquiring multimodal biometric information |
| US11475704B2 (en) | 2014-12-01 | 2022-10-18 | Zkteco Co., Ltd. | System and method for personal identification based on multimodal biometric information |
-
2012
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016086341A1 (en) * | 2014-12-01 | 2016-06-09 | Dongguan Zkteco Electronic Technology Co., Ltd | System and method for acquiring multimodal biometric information |
| CN107004113A (en) * | 2014-12-01 | 2017-08-01 | 中控智慧科技股份有限公司 | System and method for obtaining multi-mode biometric information |
| US10726235B2 (en) | 2014-12-01 | 2020-07-28 | Zkteco Co., Ltd. | System and method for acquiring multimodal biometric information |
| US11475704B2 (en) | 2014-12-01 | 2022-10-18 | Zkteco Co., Ltd. | System and method for personal identification based on multimodal biometric information |
| US11495046B2 (en) | 2014-12-01 | 2022-11-08 | Zkteco Co., Ltd. | System and method for acquiring multimodal biometric information |
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