CN102799864A - Semi-open type vein authentication device - Google Patents
Semi-open type vein authentication device Download PDFInfo
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- CN102799864A CN102799864A CN2012102276549A CN201210227654A CN102799864A CN 102799864 A CN102799864 A CN 102799864A CN 2012102276549 A CN2012102276549 A CN 2012102276549A CN 201210227654 A CN201210227654 A CN 201210227654A CN 102799864 A CN102799864 A CN 102799864A
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Abstract
The invention discloses a semi-open type vein authentication device which comprises a base (10), wherein a finger placement part (4) is arranged on the base, a camera (7) is arranged below the finger placement part (4), an optical fiber (6) is arranged between the finger placement part (4) and the camera (7), the base (10) is provided with a light source supporting wall (3) on one side of the finger placement part (4), the upper-half part of the light supporting wall (3) is bent towards the middle part of the finger placement part (4), the upper-half part of the light source supporting wall (3) is provided with an infrared light source (1) for irradiating the finger placement part (4), the base (10) is provided with a light barrier (5) on the other side of the finger placement part (4), and the light source supporting wall (3) and the light barrier (5) form a semi enclosure with an opening above for the finger placement part (4). Under the condition of high quality of pictures, the semi-open type vein authentication device ensures that the structure is opened as much as possible so that the purposes of reducing resistivity and improving usability are reached.
Description
Technical field
The present invention relates to a kind of authenticate device, specifically be meant the device that a kind of finger vena information of utilizing biosome is carried out authentication based on the biometric identity authentication techniques.
Background technology
At present, information security more and more receives people's attention.Authentication based on human body physiological characteristics has great advantage than the conventional art means.The biometric identity authentication techniques of using at present mainly contain DNA, auricle, people's face, face heat radiation, fingerprint, palmmprint, gait, hand-type, hand back vein blood vessel, iris, body odour, retina, signature, sound etc.; Wherein the finger vena identification technology has excellent in performance, has very big practicality.
The current finger vena identification technology that has come into operation, its vein authentication apparatus mainly divides two big types: one type is enclosed construction, light source is above finger; Because shade stops that so external interference is less, but its volume is bigger; In addition, the user can produce certain resistance sense when putting into this enclosure space to finger, especially for the user of first contact vein authentication apparatus; It is positioned over understanding giving birth to of the confined space that can't see to finger and resists sense, and, because it is incorrect visually also can to cause pointing placement location; And finger placement correctness has very big influence for authentication result, so the accuracy of authentication is not good enough.To above-mentioned shortcoming, a kind of new Open architecture has appearred, is characterized in; Light source is by finger below or side-irradiation finger, and this structure makes whole device can realize miniaturization, and can see the put procedure of finger; Reduced the resistance sense the when user uses, convenient new user's use, but because finger is exposed to the outside fully; Cause the device photographic images to be subject to external interference, picture quality is bad, influences the effect of final authentication.
Actual use; Open image quality issues of bringing and the closed resistance sense that brings and finger placement problem are conflicting; Therefore; The demand of between seeks to be in harmonious proportion, and provides a kind of and is guaranteeing that the vein authentication apparatus that obtains preferable picture quality becomes the industry technical issues that need to address under minimum resistance sense and the finger placement problem prerequisite.
Summary of the invention
The objective of the invention is to avoid deficiency of the prior art and provide a kind of guaranteeing to obtain the semi open model vein authentication apparatus of preferable picture quality under minimum resistance sense and the finger placement problem prerequisite.
The object of the invention is realized through following technical scheme:
A kind of semi open model vein authentication apparatus is provided, comprises base, base is provided with the finger placement section; The finger placement section; Below the finger placement section, be provided with camera, be provided with optical filter between described finger placement section and the camera, described base is provided with the light source abutment wall in a side of finger placement section; The first half of light source abutment wall is to the bending of the middle part of finger placement section; The first half of light source abutment wall is provided with according to the infrared light supply to the finger placement section, and described base is provided with light barrier at the opposite side of finger placement section, and light source abutment wall and light barrier form the semi-surrounding of top opening to the finger placement section.
Wherein, the first half of described light source abutment wall is provided with the light trough parallel with pointing placement section, and said infrared light supply is distributed in the light trough.
Wherein, be provided with the lens that infrared light supply carried out optically focused in the described light trough.
Wherein, described finger placement section is provided with and is used to detect the sensor whether finger is placed.
Wherein, be provided with optical filter between described finger placement section and the camera.
Wherein, described light source abutment wall is provided with light-absorption layer or frosted layer towards a side of described finger placement section.
Wherein, described light barrier is provided with light-absorption layer or frosted layer towards a side of described finger placement section.
Wherein, described light barrier is to the outer tilt of finger placement section.
Beneficial effect of the present invention: owing to adopted above-mentioned structure; The semi-surrounding of opening above light source abutment wall of the present invention and light barrier form the finger placement section, the semi-surrounding state can reduce extraneous interference, and authentication result is comparatively accurate; Simultaneously; Can also see the situation that finger is placed through the opening of semi-surrounding, user's resistance sense is less, also is not prone to because of the incorrect problem that causes authentication result to be forbidden of finger placement location.The present invention places finger simultaneously easily taking into account the user, takes contrast vein image preferably as much as possible.
Description of drawings
Utilize accompanying drawing that the present invention is described further, but the embodiment in the accompanying drawing do not constitute any restriction of the present invention,, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing for those of ordinary skill in the art.
Fig. 1 is the structural representation of semi open model vein authentication apparatus.
In Fig. 1, include: 1---infrared light supply, 2---lens, 3---light source abutment wall, 4---finger placement section, 5---light barrier, 6---optical filter, 7---camera, 8---finger to be certified, 9---adjacent finger, 10---base.
Embodiment
Be described in further detail below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1; Semi open model vein authentication apparatus of the present invention comprises base 10, and base 10 is provided with finger placement section 4; Below finger placement section 4, be provided with camera 7; Be provided with optical filter 6 between described finger placement section 4 and the camera 7, when taking pictures, infrared light passes finger 8 and gets in the camera 7 with optical filter 6.Vein imaging is an infrared light principle of utilizing intravenous material absorbing 7-12nm wavelength, and the main filtering wavelength of this optical filter is the light in this scope not; This optical filter slightly is wider than finger width, and the finger picture that photographs is the finger-image of complete width; The camera lens part of camera also can be equipped with high-precision bandpass filter and further reduce extraneous or catoptrical interference.Finger placement section 4 is provided with the depression supporting part in finger tip and finger root position, and the depression supporting part is slightly recessed, and the location that can conveniently point like this is placed on finger placement section 4 places, avoids finger to be placed with significantly, to rotate, and causes the pictures taken poor quality.Described base 10 is provided with light source abutment wall 3 in a side of finger placement section 4; The first half of light source abutment wall 3 is to the bending of the middle part of finger placement section 4; The first half of light source abutment wall 3 is provided with according to the infrared light supply 1 to finger placement section 4; The switch of infrared light supply 1 and brightness can be controlled, and open light source in the time of need taking pictures, and regulate intensity of illumination according to environment.Described base 10 is provided with light barrier 5 at the opposite side of finger placement section 4.When authentication, general finger skin lighter color, its reflected light is stronger, and the adjacent finger of finger to be certified is prone to reflected light in camera, can cause harmful effect to photographic effect; In addition, the reflected light of finger also can reflex to the lower surface of finger to be certified, causes finger skin to be certified bright excessively, takes the brightness of many one decks of vein image meeting finger skin of finger, has reduced contrast; Therefore, the height of light barrier 5 should surpass the thickness of finger at least, can prevent that like this reflected light of adjacent finger from causing interference to authentication.5 pairs of fingers of said light source abutment wall 3 and light barrier placement section 4 forms the semi-surrounding of top opening; The semi-surrounding state can reduce extraneous interference; Authentication result is comparatively accurate, simultaneously, can also see the situation that finger is placed through the opening of semi-surrounding; User's resistance sense is less, also is not prone to because of the incorrect problem that causes authentication result to be forbidden of finger placement location.
Wherein, the first half of described light source abutment wall 3 is provided with the light trough parallel with pointing placement section 4, and said infrared light supply 1 is distributed in the light trough.Be provided with the lens 2 that infrared light supply 1 carried out optically focused in the described light trough.Infrared light supply 1 is positioned in the light trough with lens 2, and lens 2 and cell wall can limit the emission angle of light source, makes the direct projection light of light source only throw the finger back at finger.
Wherein, described finger placement section 4 is provided with and is used to detect the sensor whether finger is placed.Specifically can place biology sensor at the finger tip of pointing placement section 4 and finger root placement section, the placement situation of biology sensor finger sensing after having sensed the finger placement, starts infrared light supply, opens camera shooting finger venous image then; When device is in authentication state, place the finger back through the operation of sensor trigger internal program, trigger one-time identity authentication with this.
Wherein, described light source abutment wall 3 is provided with light-absorption layer or frosted layer towards a side of described finger placement section 4.Described light barrier 5 is provided with light-absorption layer or frosted layer towards a side of described finger placement section 4.Light-absorption layer or frosted layer can reduce the light reflection, avoid too much reflected light to get into camera, authentication is produced disturb.
Wherein, the Lower Half of described light source abutment wall 3 is to the outer tilt of finger placement section 4.The angle of inclination of the Lower Half of light source abutment wall 3 and the angle of light source, height correlation.Light source irradiation has a spot of reflected light through the wall reflection to finger trailing flank wall one side, and light source abutment wall 3 slightly outward inclining can avoid too much reflected light to get into camera, authentication is produced disturb.
Wherein, described light barrier 5 is to the outer tilt of finger placement section 4.Light source irradiation has a spot of reflected light through the wall reflection to finger trailing flank wall one side, and light barrier 5 slightly outward inclining can avoid too much reflected light to get into camera, authentication is produced disturb.
When the present invention uses; Finger 8 to be certified is put on the finger placement section 4 from the top opening of the semi-surrounding that 5 pairs of fingers of light source abutment wall 3 and light barrier placement section 4 forms; Adjacent finger 9 is placed on light barrier 5 outsides, and the infrared light that infrared light supply 1 sends impinges upon authentication finger 8 and refers to back of the body place, and camera 7 is taken finger-image; Through image processor the view data that photographs is handled; The characteristic that extracts also stores on its internal storage or uploads to host computer and store, and the characteristic comparison of the characteristic of extracting with storage in advance, carries out authentication with this.
In a word; The above-mentioned preferred implementation though the present invention has given an example should be explained, though those skilled in the art can carry out various variations and remodeling; Only if such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (8)
1. semi open model vein authentication apparatus; It is characterized in that: comprise base (10); Base (10) is provided with finger placement section (4); Below at finger placement section (4) is provided with camera (7), is provided with optical filter (6) between described finger placement section (4) and the camera (7), and described base (10) is provided with light source abutment wall (3) in a side of finger placement section (4); The first half of light source abutment wall (3) is to the bending of the middle part of finger placement section (4); The first half of light source abutment wall (3) is provided with according to the infrared light supply (1) to finger placement section (4), and described base (10) is provided with light barrier (5) at the opposite side of finger placement section (4), and light source abutment wall (3) and light barrier (5) form the semi-surrounding of top opening to finger placement section (4).
2. semi open model vein authentication apparatus according to claim 1 is characterized in that: the first half of described light source abutment wall (3) is provided with and points the parallel light trough of placement section (4), and said infrared light supply (1) is distributed in the light trough.
3. semi open model vein authentication apparatus according to claim 2 is characterized in that: be provided with the lens (2) that infrared light supply (1) carried out optically focused in the described light trough.
4. semi open model vein authentication apparatus according to claim 1 is characterized in that: described finger placement section (4) is provided with and is used to detect the sensor whether finger is placed.
5. semi open model vein authentication apparatus according to claim 1 is characterized in that: described finger placement section (4) is provided with the depression supporting part in finger tip and finger root position.
6. semi open model vein authentication apparatus according to claim 1 is characterized in that: described light source abutment wall (3) is provided with light-absorption layer or frosted layer towards a side of described finger placement section (4).
7. semi open model vein authentication apparatus according to claim 1 is characterized in that: described light barrier (5) is provided with light-absorption layer or frosted layer towards a side of described finger placement section (4).
8. according to each described semi open model vein authentication apparatus in the claim 1 to 7, it is characterized in that: described light barrier (5) is to the outer tilt of finger placement section (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102276549A CN102799864A (en) | 2012-07-04 | 2012-07-04 | Semi-open type vein authentication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102276549A CN102799864A (en) | 2012-07-04 | 2012-07-04 | Semi-open type vein authentication device |
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| CN102799864A true CN102799864A (en) | 2012-11-28 |
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| CN2012102276549A Pending CN102799864A (en) | 2012-07-04 | 2012-07-04 | Semi-open type vein authentication device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336033A (en) * | 2015-12-22 | 2016-02-17 | 成都比善科技开发有限公司 | Intelligent and safe electronic lock |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799063A (en) * | 2003-08-13 | 2006-07-05 | 株式会社日立制作所 | Personal identification device |
| CN101042732A (en) * | 2006-03-22 | 2007-09-26 | 日立欧姆龙金融系统有限公司 | Biometrics equipment and automated teller machine |
| CN101140618A (en) * | 2006-09-07 | 2008-03-12 | 株式会社日立制作所 | Personal identification apparatus and method |
| EP2178027A2 (en) * | 2008-10-17 | 2010-04-21 | Hitachi Ltd. | Finger vein authentication device |
| CN202093529U (en) * | 2011-05-06 | 2011-12-28 | 陈庆武 | Open-type small finger vein authentication device |
-
2012
- 2012-07-04 CN CN2012102276549A patent/CN102799864A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799063A (en) * | 2003-08-13 | 2006-07-05 | 株式会社日立制作所 | Personal identification device |
| CN101042732A (en) * | 2006-03-22 | 2007-09-26 | 日立欧姆龙金融系统有限公司 | Biometrics equipment and automated teller machine |
| CN101140618A (en) * | 2006-09-07 | 2008-03-12 | 株式会社日立制作所 | Personal identification apparatus and method |
| EP2178027A2 (en) * | 2008-10-17 | 2010-04-21 | Hitachi Ltd. | Finger vein authentication device |
| CN202093529U (en) * | 2011-05-06 | 2011-12-28 | 陈庆武 | Open-type small finger vein authentication device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336033A (en) * | 2015-12-22 | 2016-02-17 | 成都比善科技开发有限公司 | Intelligent and safe electronic lock |
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Application publication date: 20121128 |