CN202033766U - Reflection-type finger vein characteristic acquisition device - Google Patents
Reflection-type finger vein characteristic acquisition device Download PDFInfo
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- CN202033766U CN202033766U CN2010206445699U CN201020644569U CN202033766U CN 202033766 U CN202033766 U CN 202033766U CN 2010206445699 U CN2010206445699 U CN 2010206445699U CN 201020644569 U CN201020644569 U CN 201020644569U CN 202033766 U CN202033766 U CN 202033766U
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- 210000003462 vein Anatomy 0.000 title claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
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Abstract
The utility model aims at providing a reflection-type finger vein acquisition device and a method for carrying out personal identity authentication via the finger vein acquisition device. The device comprises a combined optical unit, a finger induction unit, and an image acquisition unit, wherein the combined optical unit, the finger induction unit (2) and the image acquisition unit are integrated on one device. The device is characterized in that the combined optical unit comprises near infrared side light sources (1), a color filter (3) and a polygonal prism (4), wherein the near infrared side light sources (1) are arranged at the two sides of the finger induction unit (2), the color filter (3) is arranged below the finger induction unit (2), and the polygonal prism (4) used for changing an optical path is arranged below the color filter (3). The combined optical unit changes the optical path so as to reduce the linear distance of image transmission, the image acquisition unit controls the output of infrared light sources, a CMOS (Complementary Metal-Oxide-Semiconductor) sensor picks up a finger vein texture characteristic image, a camera collects the finger vein texture characteristic image, and image data are output to a host computer operating identification algorithm via a USB port.
Description
Technical field
The utility model belongs to the human-body biological identity identification technical field, relates to a kind of finger vein pattern harvester.
Background technology
Fingerprint, the face picture, iris, retina, biometrics identification technologies such as vocal print have developed many years, fingerprint identification technology is easy to use because of it, discrimination height and widespread use, find through practical, with regard to present living body finger print acquisition and recognition technology, being used for authentication also has obviously not enough, no matter be the fingerprint collecting equipment of semiconductor transducer or optical sensor, all be faced with emulation is pointed, difficult fingerprint, damage streakline and remaining trace can not be gathered well, adaptability defectives such as identification, exist 1% refuse sincere, also have 3～10% crowd normally not gather fingerprint, have quite a few people can not normally use the living body finger print identity identifying technology; Face phase recognition technology is faced with equally that computer can not substitute human brain fully, can not identify twins, ambient light changes the excessive or movement velocity of deflection angle and is matched to the technical barrier that power obviously reduces when too fast; For the identification of iris recognition and retina, also exist and do not overcome the shortcoming that the collection obstacle that brings because of eye illness can't mate.
Development along with the biomedical degree of awareness and cmos device technology, human understanding to biometrics identification technology from body surface feature growth such as fingerprints to the internal characteristics that refers to the vein texture, refer to that vein identification has obvious advantage than fingerprint recognition, as the patent No. is the utility model patent of CN200820155344.X, relate to a kind of portable hand dorsal vein image collecting device, belong to the physical characteristics collecting part of human-body biological field of authentication.Described portable hand dorsal vein Acquisition Instrument is embedded with infrared filter and infrared lamp on the front of shell, infrared lamp be evenly distributed on infrared filter around, also be embedded with in addition one infrared apart from induction module; The inside of shell is provided with optical lens, and optical lens rear portion and cmos image sensor are connected, and imageing sensor images in the imaging processing circuit, and the imaging processing circuit is transferred to the hand back vein picture that collects on the computing machine; The imaging processing circuit is given infrared lamp control module signal to adjust the duty of infrared lamp.The utility model can apply to the hand back vein recognition system, and volume is little, is easy to carry, and utilizes the plug-and-play feature of USB to use on different computing machine hand back vein recognition systems.But described portable hand dorsal vein Acquisition Instrument is that hand back vein is gathered, and complex structure.
The utility model content
In view of the foregoing, the purpose of this utility model is to provide a kind of device of reflective collection finger vena.Described a kind of reflective finger vein features harvester can identify live body and non-living body and noresidue, difficultly copys, the built-in not easy damaged of feature, become the new bio feature identity identifying technology after fingerprint recognition, being more suitable for being used for personal identification as the living body biological password, is the cutting edge technology in living things feature recognition field.
One of to achieve these goals, the utility model patent has adopted following technical proposals:
Described a kind of reflective finger vein features harvester, comprise the combination optical unit, finger sensing unit and image acquisition units, described combination optical unit comprises near infrared sidelight source, color filter, polygon prism and reflecting surface, wherein, near infrared sidelight source is arranged on the both sides of finger sensing unit, near infrared sidelight source manifests finger vena textural characteristics image from both sides irradiation finger, color filter is arranged on the below of finger sensing unit, the color filter below is provided with polygon prism and reflecting surface, repeatedly reflect and color filter group one-tenth combination optical unit change light path by custom-designed polygon prism through the plated film special processing, to reduce image transmission air line distance, make image effect even more ideal, the complete machine height further reduces; Finger induction and infrared detection have or not finger to enter combination optical unit acquisition window, to guarantee when the nothing finger enters, minimum state being turned down in infrared light brightness, when having finger to enter, duty is heightened in infrared light brightness, each evenly distributed LED infrared light supply adjustable brightness, it is even to make whole finger venous image manifest average gray; The output of image acquisition units control infrared light supply, its cmos sensor are picked up and are referred to vein texture characteristic image, by the main frame output image data of USB mouth to the operation recognizer.
Compared with prior art, the beneficial effects of the utility model are: in reflective finger vena harvester, custom-designed infrared sidelight source be reasonably combined on positional structure through the polygon prism and the infrared filter of plated film special processing, the combination optical unit of forming has changed optical path, reduced the air line distance of image transmission, the collection of finger vein can be finished under solar radiation, it is even more ideal that the vascular lake image manifests effect, make that the harvester volume further dwindles, structural design is more reasonable, open acquisition window uses convenient.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of a kind of reflective finger vein features harvester described in the utility model;
Fig. 2 is a kind of reflective finger vein features harvester synoptic diagram described in the utility model.
Wherein, 1-near infrared sidelight source, 2-finger sensing unit, 3-color filter, 4-polygon prism, 5-reflecting surface, 6-video camera, 7-USB interface, the open finger collection window of 8-.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but not as to qualification of the present utility model.
Referring to shown in Figure 1, a kind of reflective finger vein features harvester, comprise combination optical unit, finger sensing unit 2 and image acquisition units, wherein said combination optical unit, finger sensing unit 2 and image acquisition units are integrated on the device, as shown in Figure 2.Described combination optical unit comprises near infrared sidelight source 1, color filter 3, polygon prism 4 and reflecting surface 5.Described near infrared sidelight source 1 is arranged on the top of finger sensing unit 2, color filter 3 is arranged on the below of finger sensing unit 2, color filter 3 belows are provided with polygon prism 4, near infrared sidelight source 1 is arranged on the both sides of finger sensing unit, near infrared sidelight source manifests finger vena textural characteristics image from both sides irradiation finger, image is behind color filter 3, change light path through custom-designed through the polygon prism 4 of plated film special processing and the combination optical unit of reflecting surface 5 thereof, to reduce image transmission air line distance, make that image effect is even more ideal, the complete machine height further reduces; Finger sensing unit 2 and near infrared sidelight source 1 utilize infrared detection to have or not finger to enter the open finger collection window 8 in combination optical unit, to guarantee when the nothing finger enters, minimum state being turned down in infrared light brightness, when having finger to enter, duty is heightened in infrared light brightness, each evenly distributed LED infrared light supply adjustable brightness, it is even to make whole finger venous image manifest average gray; Described image acquisition units comprises video camera 6, cmos sensor (not shown) and USB interface 7, described cmos sensor is arranged on the video camera 6, when cmos sensor is sensed image information on the polygon prism 4, just open video camera 6 images acquired information, by the main frame (not shown) output image data of USB mouth 7 to the operation recognizer.
The above; it only is the embodiment in the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; conversion or the replacement expected can be understood, all of the present utility model comprising within the scope should be encompassed in.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. reflective finger vein features harvester, comprise the combination optical unit, finger sensing unit (2) and image acquisition units, described combination optical unit, finger sensing unit (2) and image acquisition units are integrated on the device, it is characterized in that: described combination optical unit comprises near infrared sidelight source (1), color filter (3), polygon prism (4), wherein, near infrared sidelight source (1) is arranged on the both sides of finger sensing unit (2), color filter (3) is arranged on the below of finger sensing unit (2), and color filter (3) below is provided for changing the polygon prism (4) of light path.
2. a kind of reflective finger vein features harvester according to claim 1 is characterized in that: described reflective finger vein features harvester also comprises open finger collection window (8).
3. a kind of reflective finger vein features harvester according to claim 1, it is characterized in that: polygon prism (4) is through coating film treatment.
4. a kind of reflective finger vein features harvester according to claim 3 is characterized in that: described polygon prism (4) replaces with reflecting surface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206445699U CN202033766U (en) | 2010-12-06 | 2010-12-06 | Reflection-type finger vein characteristic acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206445699U CN202033766U (en) | 2010-12-06 | 2010-12-06 | Reflection-type finger vein characteristic acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033766U true CN202033766U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206445699U Expired - Lifetime CN202033766U (en) | 2010-12-06 | 2010-12-06 | Reflection-type finger vein characteristic acquisition device |
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| Country | Link |
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| CN (1) | CN202033766U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102609691A (en) * | 2012-02-13 | 2012-07-25 | 深圳市中控生物识别技术有限公司 | Finger vein collecting device |
| CN108304776A (en) * | 2017-12-27 | 2018-07-20 | 北京智慧眼科技股份有限公司 | Refer to the method, apparatus and storage medium of vein image intercommunication identification |
| CN108596031A (en) * | 2018-03-20 | 2018-09-28 | 深圳大学 | A kind of multispectral three-dimensional fingerprint and refer to venous collection device |
-
2010
- 2010-12-06 CN CN2010206445699U patent/CN202033766U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102609691A (en) * | 2012-02-13 | 2012-07-25 | 深圳市中控生物识别技术有限公司 | Finger vein collecting device |
| CN108304776A (en) * | 2017-12-27 | 2018-07-20 | 北京智慧眼科技股份有限公司 | Refer to the method, apparatus and storage medium of vein image intercommunication identification |
| CN108596031A (en) * | 2018-03-20 | 2018-09-28 | 深圳大学 | A kind of multispectral three-dimensional fingerprint and refer to venous collection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
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| CX01 | Expiry of patent term |