CN201477616U - Double-lens fingerprint and palm print acquisition instrument - Google Patents
Double-lens fingerprint and palm print acquisition instrument Download PDFInfo
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- CN201477616U CN201477616U CN2009203050628U CN200920305062U CN201477616U CN 201477616 U CN201477616 U CN 201477616U CN 2009203050628 U CN2009203050628 U CN 2009203050628U CN 200920305062 U CN200920305062 U CN 200920305062U CN 201477616 U CN201477616 U CN 201477616U
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- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 210000003205 muscle Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 210000003811 finger Anatomy 0.000 description 13
- 239000004065 semiconductor Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model relates to a fingerprint and palm print acquisition instrument with two parallel lenses and two sets of optical modules. The acquisition instrument is provided with two acquisition windows and integrated with two sets of acquisition paths, one set of the acquisition path is used to acquire fingerprints, the other set of the acquisition path is used to acquire palm prints, each set of the acquisition path adopts two parallel lenses in order to enhance the image-refracting effect and increase the definition of the fingerprints, and the two sets of optic modules are in parallel and can acquire a plurality of data at the same time. The acquisition instrument is provided with the two sets of the optical modules, each set of which comprises a light source, a refractor, a reflector and a receiver; a prism is adopted as the refractor, a diffuser is attached on the incident plane of the prism, the reflecting plane of the prism serves as an acquisition plane, the lenses are arranged corresponding to another plane of the prism, each set of the optical module adopts two lenses, which are arranged in parallel, the receiver comprises an objective lens unit and an image sensor, and the prism, the lenses, the reflector, the objective lens unit and the image sensor are arranged in the shell. The shell can protect internal parts; since the image sensor can be arranged on the outside of the shell, image sensors with different precisions can be conveniently chosen and replaced, so the operation is flexible; the adoption of the two lenses can increase the definition of image refraction; since the objective lens unit is fixed inside the shell and provided with a projection which is positioned on an objective lens-fixing support in the shell, the stability of optic signal transmission is enhanced, and the success rate of optic signal reception is increased; and the overall structure of the acquisition instrument is compact and small.
Description
Technical field
The utility model relates to a kind of Acquisition Instrument, and especially a kind of double lens is arranged in parallel, has the Acquisition Instrument of two cover optical modules.
Background technology
For accurately characterizing a people's identity, need to gather individual feature, existing acquisition mode: fingerprint, palmmprint, face line, iris, sound, vein, signature sometimes.
Fingerprint is one of natural miracle, and therefore human had I.D. built-in, that obtain easily just, and everyone finger tip all has a unique design of only representing the himself.
The fingerprint collecting instrument system has two groundworks: the one, and the image that needs acquisition to point, the 2nd, need to determine ridge line in this image and trough whether with former images acquired in ridge line and trough match, the fingerprint image that obtains a people has several different methods, the most frequently used method is exactly optical module collection and semiconductor collection now, these two kinds of acquisition methods are worked in a completely different way, but all can obtain with a kind of image.
The core component of optical module collection is an imageing sensor, this with digital camera and video camera in the light sensor system that uses be identical.CCD (charge-coupled image sensor) is as an imageing sensor, and this device can produce electric signal under the effect of photon, pixel of each image recording sensor, i.e. and the small round dot of the light beam of this point is hit in representative.The light and shade pixel has constituted the image of collection scene (for example finger) jointly.Usually, an analog to digital converter is arranged in the Acquisition Instrument system, be used for the treatment of simulated electronic signal to produce the digital representation of this image.Acquisition Instrument is furnished with light source, is generally one group of light emitting diode, is used for illuminating the ridge line of finger.When you were placed on finger on the Collection prism, gatherer process had just begun, and the CCD camera just is filmed fingerprint.What in fact the CCD system produced is the inverted image of finger, the more reflection ray of darker Regional Representative (the ridge line of finger), the reflection ray (trough of finger) that brighter Regional Representative is less.Before comparing fingerprint and storing data, the Acquisition Instrument processor will guarantee that CCD has photographed distinct image.It can check the integral value of the mean value or a small sample of pixel darkness, if integral image is too dark or too bright, just this time collection can be abandoned.So Acquisition Instrument is adjusted acquisition time and is entered to allow light more or still less, gathers once again.If darkness is suitable, the Acquisition Instrument system can continue the sharpness (acutance of fingerprint collecting) of check image.Processor will be checked the some straight lines that move along the vertical and horizontal directions on image.If the line vertical with the ridge line is made of alternately very dark pixel and very bright pixel, so just mean that fingerprint image has good sharpness.Find under the clear picture and the correct situation of exposing that at processor it can continue the fingerprint of will catch and the fingerprint on the file compares.
As the optical module Acquisition Instrument, the semiconductor Acquisition Instrument produces ridge line and the trough image of forming fingerprint.Difference is that the semiconductor Acquisition Instrument uses electric current but not light comes the sensing fingerprint.
Summary of the invention
The purpose of this utility model provides a kind of novel double lens fingers and palms line Acquisition Instrument, have two acquisition windows and integrated two cover collection circuits, one cover is used for gathering fingerprint, another set ofly be used for gathering palmmprint, every suit gather circuit adopt be arranged in parallel double lens, improve the image refraction effect, improve the sharpness of fingerprint, the parallel collection that a plurality of data can be provided simultaneously of two cover optical modules.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of double lens fingers and palms line Acquisition Instrument, comprise housing, light source, refracting telescope, catoptron and receiving trap, wherein, Acquisition Instrument has two cover optical modules, and every cover optical module comprises light source, refracting telescope, catoptron and receiving trap; Described refracting telescope adopts prism, be covered with diffusing globe on the plane of incidence of prism, the reflecting surface of prism is as collection face, another face correspondence of prism is placed with lens, used lens are totally two on every suit optical module, be arranged in parallel, described receiving trap comprises objective apparatus and imageing sensor, and prism, lens, catoptron, objective apparatus and imageing sensor are arranged in the housing.The Acquisition Instrument housing is provided with two data and gathers acquisition window, the corresponding cover optical module of each data acquisition acquisition window, one cover is finger print acquisition module, the fingerprint image that is used for acquisition plane or rolling, another set of is the palmmprint acquisition module, be used to gather half palmmprint, the plane fingerprint image of four fingers and two thumbs, and export separately by imageing sensor, the effect of objective apparatus is that sample is done to amplify for the first time, it is the important components of decision Acquisition Instrument readability, objective apparatus utilizes light to make the imaging for the first time of tested object, thereby direct relation and influence quality and every optical technology parameter of imaging, imageing sensor is light-electric translation function of utilizing photoelectric device, light image on its light-sensitive surface converted to light image become corresponding proportion to concern a kind of function element of electric image signal, be divided into CCD and CMOS (ComplementaryMetal-Oxide Semiconductor according to the element difference, metal oxide semiconductor device), CCD is the high-end technology element that is applied in the imaging aspect, CMOS then is applied in the product of low image quality, its advantage is that manufacturing cost is lower than CCD, power consumption is also much lower, although bigger difference is arranged technically, but CCD and CMOS performance gap are not very big, just the CMOS camera is higher to the requirement of light source, but this problem is resolved substantially now, the CCD size of component mostly is 1/3 inch or 1/4 inch at present, under identical resolution, should select component size bigger for well; The Acquisition Instrument of the technical program is by housings close, and housing can be protected objective apparatus, catoptron and the lens etc. of Acquisition Instrument inside, and the imageing sensor of Acquisition Instrument is arranged on outside, can conveniently imageing sensor be changed, and operates more flexible.
As preferably, housing wall is provided with the object lens fixed support, the object lens fixed support is provided with the circular hole that an outer ring with objective apparatus matches, and the outer wall of objective apparatus is provided with a circle protuberance, and objective apparatus passes the circular hole that the object lens fixed support hinders and the protuberance location is arranged; The object lens fixed support is connected with the sensor board fixed support by attachment screw and dog screw, and the sensor board fixed support is provided with macropore, and objective apparatus passes macropore, fixation of sensor plate on the sensor board fixed support.Objective apparatus is positioned on the object lens fixed support by protuberance, can guarantee the angle between objective apparatus and the catoptron, guarantees that objective apparatus receives the light of mirror reflects; The sensor board fixed support is connected on the object lens fixed support by attachment screw and dog screw, can regulate the support bracket fastened angle of sensor board by dog screw, thereby adjusts the angle of the relative objective apparatus of imageing sensor.
As preferably, sensor board is fixed on the sensor board fixed support from the web member of outside by two ends, imageing sensor is fixed on the sensor board, imageing sensor is over against the path channels of objective apparatus inside, be connected with data line on the sensor board, data line is connected to the outside of Acquisition Instrument.
As preferably, light source adopts luminous plaque.Luminous plaque can provide Acquisition Instrument to use for a long time as the light source that continues.
The beneficial effects of the utility model are: prism, lens, catoptron, objective apparatus are arranged in the housing of Acquisition Instrument; the inner parts of housing protection; imageing sensor is arranged on outside; be convenient for changing the imageing sensor of selecting different accuracy for use; flexible operation; adopt two lens can improve the sharpness of image refraction; objective apparatus is fixed on enclosure interior and has protuberance to be positioned on the interior object lens fixed support of housing; improved the stability of optical signal transmission; improve the success ratio that light signal receives; the compact conformation of Acquisition Instrument integral body, volume is little.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of shell structure synoptic diagram of the utility model;
Among the figure: 1, prism, 2, diffusing globe, 3, luminous plaque, 4, catoptron, 5, housing, 6, objective apparatus, 7, sensor board, 8, imageing sensor, 9, lens, 10, object lens fixed support, 11, the sensor board fixed support, 12, the fingerprint collecting window, 13, the palmmprint acquisition window.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of double lens fingers and palms line Acquisition Instrument (referring to accompanying drawing 1), comprise housing 5, light source, refracting telescope, catoptron 4 and receiving trap, light source, refracting telescope, catoptron and receiving trap are formed a cover optical module, Acquisition Instrument inside is provided with two cover optical modules, housing is provided with two data acquisition windows (referring to accompanying drawing 2), the corresponding cover optical module of each data acquisition acquisition window is respectively 1 palmmprint acquisition window 13 and 1 fingerprint collecting window 12; Adopt prism 1 as refracting telescope, adopt luminous plaque as light source, be covered with diffusing globe 2 on the plane of incidence of prism, second face of prism is as collection face, the light of luminous plaque enters through three face of collection face reflection through prism from the plane of incidence of prism, the position lens 9 of the 3rd face of corresponding prism, totally two on lens, be arranged in parallel, catoptron is arranged on the light path that Acquisition Instrument passes from lens, receiving trap is arranged on the reflected light path of catoptron, receiving trap comprises objective apparatus 6 and imageing sensor 8, prism, lens, catoptron, objective apparatus is arranged in the housing, housing wall is provided with object lens fixed support 10, the object lens fixed support is provided with the circular hole that an outer ring with objective apparatus matches, the outer wall of objective apparatus is provided with a circle protuberance, objective apparatus passes the circular hole on the object lens fixed support and locatees by protuberance, the object lens fixed support is connected with sensor board fixed support 11 by attachment screw and dog screw, the sensor board fixed support is provided with macropore, objective apparatus passes macropore, fixation of sensor plate 7 on the sensor board fixed support, sensor board is arranged on outside, sensor board is fixed on the sensor board fixed support by the web member at two ends, imageing sensor is fixed on the sensor board, and imageing sensor is over against the path channels of objective apparatus inside.
Double lens fingers and palms line Acquisition Instrument possesses the USB2.0 interface, can be used as the peripherals of a station symbol standard, be connected to any PC fast, in order to satisfy the demand of actual working environment, the direct supply transformer of being furnished with 12V, and also looser to the requirement of working environment (temperature).
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (6)
1. a double lens fingers and palms line Acquisition Instrument is characterized in that Acquisition Instrument has two cover optical modules, and every cover optical module comprises light source, refracting telescope, catoptron and receiving trap; Described refracting telescope adopts prism, be covered with diffusing globe on the plane of incidence of prism, the reflecting surface of prism is as collection face, another face correspondence of prism is placed with lens, used lens are totally two on every suit optical module, be arranged in parallel, described receiving trap comprises objective apparatus and imageing sensor, and prism, lens, catoptron, objective apparatus and imageing sensor are arranged in the housing.
2. double lens fingers and palms line Acquisition Instrument according to claim 1, it is characterized in that housing wall is provided with the object lens fixed support, the object lens fixed support is provided with the circular hole that an outer ring with objective apparatus matches, the outer wall of objective apparatus is provided with a circle protuberance, and objective apparatus passes the circular hole of object lens fixed support wound and the protuberance location is arranged.
3. double lens fingers and palms line Acquisition Instrument according to claim 2, it is characterized in that connecing muscle and be connected with the sensor board fixed support by attachment screw and dog screw, the sensor board fixed support is provided with macropore, and objective apparatus passes macropore, fixation of sensor plate on the sensor board fixed support.
4. root is according to claim 1 or 2 or 3 described double lens fingers and palms line Acquisition Instruments, it is characterized in that sensor board is fixed on the sensor board fixed support from the web member of outside by two ends, imageing sensor is fixed on the sensor board, imageing sensor is over against the path channels of objective apparatus inside, be connected with data line on the sensor board, data line is connected to the outside of Acquisition Instrument.
5. double lens fingers and palms line Acquisition Instrument according to claim 1 is characterized in that described light source adopts luminous plaque.
6. double lens fingers and palms line Acquisition Instrument according to claim 1 is characterized in that two cover optical modules, and a cover is fingerprint acquisition instrument, and another set of is the palmmprint Acquisition Instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203050628U CN201477616U (en) | 2009-06-25 | 2009-06-25 | Double-lens fingerprint and palm print acquisition instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203050628U CN201477616U (en) | 2009-06-25 | 2009-06-25 | Double-lens fingerprint and palm print acquisition instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477616U true CN201477616U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203050628U Expired - Fee Related CN201477616U (en) | 2009-06-25 | 2009-06-25 | Double-lens fingerprint and palm print acquisition instrument |
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| Country | Link |
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| CN (1) | CN201477616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361334A (en) * | 2014-10-17 | 2015-02-18 | 成都科创佳思科技有限公司 | Fingerprint collection device |
-
2009
- 2009-06-25 CN CN2009203050628U patent/CN201477616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361334A (en) * | 2014-10-17 | 2015-02-18 | 成都科创佳思科技有限公司 | Fingerprint collection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20170625 |