CN201477612U - Fingerprint scanner with indicating lamps - Google Patents
Fingerprint scanner with indicating lamps Download PDFInfo
- Publication number
- CN201477612U CN201477612U CN2009203050562U CN200920305056U CN201477612U CN 201477612 U CN201477612 U CN 201477612U CN 2009203050562 U CN2009203050562 U CN 2009203050562U CN 200920305056 U CN200920305056 U CN 200920305056U CN 201477612 U CN201477612 U CN 201477612U
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- prism
- acquisition instrument
- fingerprint
- finger
- indicating lamps
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- 239000004065 semiconductor Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission 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
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model relates to a fingerprint scanner with indicating lamps, which aims to provide a fingerprint scanner with indicating lamps. A user can know the finger needed to be scanned according to display of the indicating lamps or can identify the finger with pre-scanned fingerprint according to the display of the indicating lamps. The fingerprint scanner comprises a casing, a light source, a refractor, a reflector and a receiving device, wherein the refractor utilizes a prism, a diffuser is adhered on an incidence plane of the prism, a reflecting surface of the prism is utilized as a scanning surface while the other surface of the prism is correspondingly provided with a lens, the receiving device comprises an objective lens device and an image sensor, and the casing of the scanner is provided with the indicating lamps. Single reflection can save the required reflector and can also simplify arrangement of the reflector, thereby being capable of reducing integral volume, and simplifying the structure inside the scanner. The indicating lamps which are arranged on the casing of the scanner correspond to fingers, thereby bringing convenience for reading out the scanned finger.
Description
Technical field
The utility model relates to a kind of fingerprint acquisition instrument, especially a kind of fingerprint acquisition instrument of tape light.
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 fingerprint acquisition instrument of tape light, can know by the demonstration of pilot lamp and need gather which only finger, and perhaps which finger draws the fingerprint of gathering in advance be to the demonstration by pilot lamp.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of fingerprint acquisition instrument of tape light, comprise housing, light source, refracting telescope, catoptron and receiving trap, wherein, 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, and another face correspondence of prism is placed with lens, described receiving trap comprises objective apparatus and imageing sensor, and the housing of Acquisition Instrument is provided with pilot lamp.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 the photoelectric converting function that utilizes 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; Catoptron in the technical program and prism constitute the light path reflection paths, collect the fingerprint signal of electric signal at last as receiving trap by objective apparatus, thereby dwindle the overall volume of Acquisition Instrument, inner is relatively simple for structure, the state indication that pilot lamp on the housing is gathered fingerprint in the middle of can being, can be the corresponding indication of finger, also can be the demonstration of the fingerprint positions of gathering in advance.
As preferably, totally ten of pilot lamp, the spread geometry of pilot lamp is corresponding with the position of finger.10 three-color LED pilot lamp are formed, respectively corresponding ten fingers, can read the position of the fingerprint of collection when pilot lamp is bright easily, can know it is which finger at a glance by the pilot lamp corresponding with finger, can stretch out corresponding finger like this and gather, which finger what perhaps can know collection is.
As preferably, objective apparatus is fixed on the Acquisition Instrument housing, and imageing sensor is fixed on the sensor board, and imageing sensor is facing to the light path of objective apparatus inside.Imageing sensor to external data processor, is stored data transmission or the data of data with original storage are compared by external data processor.
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: individual reflection can be saved the catoptron that needs, also can simplify the layout of catoptron, can reduce whole volume like this, simplify the structure of Acquisition Instrument inside, the Acquisition Instrument housing is provided with pilot lamp, pilot lamp is corresponding with finger, and which finger what can conveniently read collection is.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of housing synoptic diagram of the utility model;
Among the figure: 1, luminous plaque, 2, diffusing globe, 3, prism, 4, lens, 5, catoptron, 6, objective apparatus, 7, imageing sensor, 8, sensor board, 9, housing, 10, pilot lamp.
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 fingerprint acquisition instrument of tape light (referring to accompanying drawing 1 accompanying drawing 2), comprise light source, refracting telescope, catoptron and receiving device, adopt luminous plaque 1 as light source, adopt prism 3 as refracting telescope, prism is the plane of incidence towards the one side of luminous plaque, be covered with diffusing globe 2 on the plane of incidence, 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 4 of the 3rd face of corresponding prism, receiving trap comprises objective apparatus 6 and imageing sensor 7, and objective apparatus is fixed on the Acquisition Instrument housing 9, and imageing sensor is fixed on the sensor board 8, imageing sensor is facing to the light path of objective apparatus inside, the housing of Acquisition Instrument is provided with pilot lamp 10, totally ten of pilot lamp, and the spread geometry of pilot lamp is corresponding with the position of finger.
The fingerprint acquisition instrument of tape light possesses the USB2.0 interface, can be used as the peripherals of a station symbol standard, is connected to any PC fast.
When one of them pilot lamp on the Acquisition Instrument housing is bright, stretch out corresponding finger, finish collection,, then can not finish the work of collection if what stretch out is not the finger of pilot lamp correspondence to collection face.
Thrust out one's fingers and gather face, gather when finishing, pilot lamp corresponding with the position of finger on the housing is bright, show current collection fingerprint be which finger.
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 (4)
1. the fingerprint acquisition instrument of a tape light, comprise housing, light source, refracting telescope, catoptron and receiving trap, it is characterized in that 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, and described receiving trap comprises objective apparatus and imageing sensor, and the housing of Acquisition Instrument is provided with pilot lamp.
2. the fingerprint acquisition instrument of tape light according to claim 1 is characterized in that totally ten of pilot lamp, and the spread geometry of pilot lamp is corresponding with the position of finger.
3. the fingerprint acquisition instrument of tape light according to claim 1 is characterized in that objective apparatus is fixed on the Acquisition Instrument housing, and imageing sensor is fixed on the sensor board, and imageing sensor is facing to the light path of objective apparatus inside.
4. the fingerprint acquisition instrument of tape light according to claim 1 is characterized in that described light source adopts luminous plaque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203050562U CN201477612U (en) | 2009-06-25 | 2009-06-25 | Fingerprint scanner with indicating lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203050562U CN201477612U (en) | 2009-06-25 | 2009-06-25 | Fingerprint scanner with indicating lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477612U true CN201477612U (en) | 2010-05-19 |
Family
ID=42413867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203050562U Expired - Fee Related CN201477612U (en) | 2009-06-25 | 2009-06-25 | Fingerprint scanner with indicating lamps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477612U (en) |
-
2009
- 2009-06-25 CN CN2009203050562U patent/CN201477612U/en not_active Expired - Fee Related
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Legal Events
| 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 |
Granted publication date: 20100519 Termination date: 20170625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |