CN208737488U - First knuckle refers to venous collection device - Google Patents
First knuckle refers to venous collection device Download PDFInfo
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- CN208737488U CN208737488U CN201821394720.0U CN201821394720U CN208737488U CN 208737488 U CN208737488 U CN 208737488U CN 201821394720 U CN201821394720 U CN 201821394720U CN 208737488 U CN208737488 U CN 208737488U
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Abstract
This application discloses a kind of first knuckles to refer to venous collection device.The device includes: contact portion, is in contact for the first knuckle with finger；Acquisition portion is set to below the contact portion, the image of the finger vein for acquiring the first knuckle；The two sides of the contact portion are arranged in infrared light supply；Boss is provided between the contact portion and the infrared light supply, height of the boss close to the infrared light supply side is gradually decreased from the finger tip of the finger to the direction of the first knuckle.The application can be prevented the part infrared light from shining directly into finger surface and be reflected into acquisition portion, be improved image quality with shield portions infrared light；Furthermore it is possible to reduce the thickness of the device on the whole, volume is reduced, easy to carry, installation is also convenient for integrated with other equipment.
Description
Technical field
This application involves field of information acquisition, refer to venous collection device more particularly to a kind of first knuckle.
Background technique
Currently, referring to that venous collection device is broadly divided into two kinds both at home and abroad, i.e. transmission-type refers to venous collection device and reflection
Formula refers to venous collection device.
Transmission-type refers to that venous collection device is usually the finger back side that near-infrared is located at finger, near-infrared light source
Transmitting light is transmitted through finger, and transmitted ray is placed on the reception of the camera system below finger, and formation refers to vein image.It should
Device advantage is that transmitted ray interference is less, and image quality is excellent, and disadvantage is above finger that there are the devices such as light source, so that
Finger is located in the space of relative closure.The generally existing equipment volume of the device is larger, finger placement operation is inconvenient, inconvenience is at it
It integrates to wait in his equipment and applies problem.
Reflective finger venous collection device usually makes transmitting light be transmitted through finger, and transmitted ray is placed on finger
The camera system of lower section receives, and formation refers to vein image.The device advantage is: Relative Transmission formula refers to venous collection device, portion
Divide and solve the problems, such as the closing of finger surrounding space, improves the experience of finger placement operation.The disadvantage is that, anti-without active dodge
Penetrate interference of the light to transmitted ray so that refer to that vein imaging quality is generally bad, meanwhile, the device there is also equipment volume compared with
Greatly, inconvenient and integrated problem.
Both the above scheme be substantially second knuckle even the finger vein of second knuckle and three finger joints using finger into
The image that row collects carries out subsequent comparison, and then the identity of people is identified.Due to second knuckle and third knuckle
Opposite first knuckle is relatively flat, can be bonded completely with the contact portion of acquisition device, therefore the effect of venous collection is preferable, so
And such device length is longer, volume is larger, therefore the space occupied is also larger, does not meet the requirement of miniaturization, with its
Disadvantage is especially prominent when his device is integrated.
Utility model content
Aiming to overcome that the above problem or at least being partially solved or extenuate for the application solves the above problems.
This application provides a kind of first knuckles to refer to venous collection device, comprising:
Contact portion is in contact for the first knuckle with finger；
Acquisition portion is set to below the contact portion, the image of the finger vein for acquiring the first knuckle；
The two sides of the contact portion are arranged in infrared light supply；
Boss is provided between the contact portion and the infrared light supply, the boss is close to the infrared light supply side
Height is gradually decreased from the finger tip of the finger to the direction of the first knuckle.
It, cannot when being placed on contact portion since the finger tip of first knuckle to surface between finger pulp is curved surface in the application
It is fitted closely with contact portion, but there are certain gaps.Infrared light supply is easy to be irradiated to finger surface in this case
Reflection is formed, therefore causes to refer to the decline of vein imaging quality, height of the application by boss close to the infrared light supply side is set
It is set to from the finger tip of the finger and is gradually decreased to the direction of the first knuckle, institute can be prevented with shield portions infrared light
It states part infrared light and shines directly into finger surface and be reflected into acquisition portion.In addition, due to being capable of finger vein to first knuckle
It is acquired, and does not have to the image of acquisition second knuckle or third knuckle, so that the thickness of the device is reduced on the whole,
Volume is reduced, easy to carry, installation is also convenient for integrated with other equipment.
Optionally, the boss is identical close to the side of contact portion height and forms the first knuckle shape
Profile.
The device can guide user that finger is placed on contact portion, limit finger placement location, and appearance has human body
The sweeping lines of finger, therefore it is more in line with ergonomics, it is also more beautiful.
It optionally, further include finger detecting part, the finger detecting part and the contact portion are arranged side by side, and the hand
Refer to that detecting part is electrically connected with the acquisition portion and the infrared light supply respectively, the finger detecting part is for sensing depositing for finger
To start the acquisition portion and the infrared light supply.
The device can the work when detecting finger, therefore more power saving and intelligence, while can also extend making for device
Use the service life.
Optionally, the finger detecting part and the contact portion are arranged side by side along the direction that the finger extends, described
Finger detecting part is arranged far from one end of the finger tip.
Optionally, the finger detecting part is piezoelectric transducer or capacitive touch sensors.
Optionally, the infrared light supply is arranged along horizontal direction transmitting infrared light.
Optionally, which further includes white light source, is arranged near the acquisition portion, is arranged along level side
To transmitting white light, so that the acquisition portion acquires the fingerprint image of the first knuckle using the white light.
The device, which can be realized, refers to vein and/or fingerprint double authentication function, and volume is smaller, and function is more, and integrated level is more
It is high.
Optionally, which further includes controller, the controller respectively with the infrared light supply, the acquisition portion and institute
White light source connection is stated, is successively opened for controlling the infrared light supply and the white light source, and control the acquisition portion
The finger vein image and fingerprint image of the first knuckle are acquired respectively.
The controller of the device can control the opening and closing of each light source and the work in acquisition portion, so that user is put
It sets a finger and can acquire simultaneously and refer to vein and fingerprint, by dual acquisition and verifying, improve the accurate of authentication
Property and safety.
It optionally, is filter in the contact portion, for so that the infrared light that the infrared light supply issues penetrates institute
It states filter and is irradiated to the acquisition portion.
According to the accompanying drawings to the detailed description of the specific embodiment of the application, those skilled in the art will be more
Above-mentioned and other purposes, the advantages and features of the application are illustrated.
Detailed description of the invention
Some specific embodiments of the application are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram for referring to venous collection device according to the first knuckle of one embodiment of the application；
Fig. 2 is the schematic diagram of internal structure for referring to venous collection device according to the first knuckle of one embodiment of the application；
Fig. 3 is the schematic flow diagram for referring to vein collection method according to the first knuckle of one embodiment of the application；
Fig. 4 is the schematic flow diagram for referring to vein collection method according to the first knuckle of another embodiment of the application.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing, to this
Technical solution in utility model embodiment carries out clear, complete description.Obviously, described embodiment is the utility model
A part of the embodiment, instead of all the embodiments.
Therefore, below to the detailed description of the embodiments of the present invention be not intended to limit claimed it is practical new
The range of type, but it is merely representative of the unit embodiment of the utility model.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without creative efforts belongs to the utility model guarantor
The range of shield.It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
The embodiment of the application provides a kind of first knuckle and refers to venous collection device.Fig. 1 is according to the application
The first knuckle of one embodiment refer to the schematic diagram of venous collection device.The apparatus may include: contact portion 112,
It is in contact for the first knuckle with finger；Acquisition portion (not shown) is set to 112 lower section of contact portion, for acquiring
State the image of the finger vein of first knuckle；The two sides of the contact portion are arranged in infrared light supply；The contact portion 112 and described
Be provided with boss 111 between infrared light supply, the boss 111 close to the infrared light supply side height from the finger of the finger
Point is gradually decreased to the direction of the first knuckle.
It, cannot when being placed on contact portion since the finger tip of first knuckle to surface between finger pulp is curved surface in the application
It is fitted closely with contact portion, but there are certain gaps.Infrared light supply is easy to be irradiated to finger surface in this case
Reflection is formed, therefore causes to refer to the decline of vein imaging quality, height of the application by boss close to the infrared light supply side is set
It is set to from the finger tip of the finger and is gradually decreased to the direction of the first knuckle, institute can be prevented with shield portions infrared light
It states part infrared light and shines directly into finger surface and be reflected into acquisition portion.In addition, due to being capable of finger vein to first knuckle
It is acquired, and does not have to the image of acquisition second knuckle or third knuckle, so that the thickness of the device is reduced on the whole,
Volume is reduced, easy to carry, installation is also convenient for integrated with other equipment.
The infrared light supply is arranged along horizontal direction transmitting infrared light.Infrared light supply may include right infrared light supply
110 and left infrared light supply (not shown).Acquisition portion can be cmos image sensor.Optionally, boss 111 is in contact portion 112
Both sides be arranged symmetrically.
Optionally, boss 111 is arranged around contact portion 112, forms the profile of the first knuckle shape.
Optionally, the boss 111 is close to the height of the infrared light supply side from the finger tip of the finger to described
The direction of one finger joint gradually decreases；The boss is identical close to the side of contact portion height.Therefore, the upper surface of boss is
One inclined plane, the intersection and the straight line where contact portion extending direction of plane where plane where upper surface and contact portion
At the angle less than 90 degree.Such setting can provide a Guiding surfaces for infrared light supply, can guide the angle of infrared light
Degree and direction.For the front of first knuckle, Ray obliquity is incident, and for the rear portion of first knuckle, light level is incident, passes through
This mode can guide infrared light to be incident on first knuckle along boss upper surface according to the shape and feature of first knuckle
Side, to efficiently use light source and reduce reflected light.
It is understood that height of the boss close to the contact portion side can also be with the close infrared light supply
The height of side is identical.This design method can also play the incident direction of guidance light.
In an optional embodiment, left infrared light supply and right infrared light supply are separately positioned on the shell with window
Interior, the window is open towards first knuckle direction, so that infrared light supply is incident on first knuckle along the window.Window by
Four, upper and lower, left and right plane surrounds.The window includes above-mentioned boss 111.The upper surface of the boss 111 is constituted under window
Plane.
Include but is not limited to following advantages in the form of the window, is conducive to infrared light first and further converges to
At one finger joint position；Second, due to there is blocking for window, prevent infrared light from entering human eye, therefore also safer；Third,
A concave station is collectively formed in forms and contact portion, can guide user that finger is placed on contact portion, and limitation finger places position
It sets.The design appearance has the sweeping lines of human finger, therefore is more in line with ergonomics, also more beautiful.
In one optionally embodiment, optical filter is provided in front of infrared light supply.Optical filter is embedding to be used in the window
So that the infrared light that infrared light supply issues is irradiated to finger through optical filter.Optionally, optical filter is the poly- methyl of black transparent
Methyl acrylate (PMMA) material.Optical filter can play certain filter action to infrared light supply, filter out the infrared light of sending
Clutter, refer to the image quality of vein to improve, and can play a certain protective role to the eyes of user.
Optionally, the contact portion 112 is filter, for so that the infrared light that the infrared light supply issues penetrates institute
It states filter and is irradiated to the acquisition portion.
Certain filter action can be played to infrared light supply using the filter, filter out the clutter of the infrared light of sending,
To improve the image quality for referring to vein.
In one optionally embodiment, the surface of contact portion 112 is arc or plane.This design meets human body
Finger surface shape reduces the sky between finger and device so that the finger of user can be fitted closely with contact portion
Gas, so that referring to that venous collection portion is more clear the imaging for referring to vein.
Optionally, which can also include finger detecting part 113, the finger detecting part 113 and the contact portion 112
It is arranged side by side, and the finger detecting part 113 is electrically connected with the acquisition portion and the infrared light supply respectively, the finger sense
Survey portion is used to sense the presence of finger, to start the acquisition portion and infrared light supply.The device can when detecting finger work
Make, therefore more power saving and intelligence.
The finger detecting part 113 is arranged side by side with the contact portion along the direction that the finger extends, the finger
Detecting part is arranged far from one end of the finger tip.
Optionally, the finger detecting part is piezoelectric transducer or capacitive touch sensors.
When finger is placed on contact portion 112 by user, finger detecting part 113 can be sheltered from.If finger detecting part
113 sense the presence of finger, then start acquisition portion 108 and infrared light supply, to be acquired to finger vein.Other when,
Device may be at standby mode, save energy, while can also extend the service life of device.
Optionally, which can also include white light source, which is arranged near the acquisition portion, is set
It is set to and emits white light along horizontal direction.When white light source issues white light, the acquisition portion can be also used for acquiring described the
The fingerprint of one finger joint.
The device further includes controller, the controller respectively with the infrared light supply, the acquisition portion and the white light
Light source connection, is successively opened, and control the collecting part and do not adopt for controlling the infrared light supply and the white light source
Collect the finger vein image and fingerprint image of the first knuckle.
Optionally, controller can adjust infrared light supply according to the finger vein image quality of venous collection device acquisition is referred to
The intensity and/or brightness of light.When picture quality show insufficient light when, controller increase infrared light supply light intensity and/or
Brightness, vice versa.
Fig. 2 is the schematic diagram of internal structure for referring to venous collection device according to the first knuckle of one embodiment of the application.
By the device after removing shell and boss, it can be seen that its internal structure.Enclosure interior includes the support plate 304 of zigzag shape,
The support plate 304 includes both wings, side wall and roof.Infrared light supply is separately positioned in right risers 301 and left risers 302.Both wings
There are two arc-shaped protrusion, right risers 301 and left risers 302 to be separately positioned in arc-shaped protrusion for upper each tool, and respectively with two
A side wall connection.White light source is arranged on back vertical plate 303.The inside of 304 side wall of support plate is arranged in back vertical plate 303.Finger
The upper surface of 304 roof of support plate is disposed side by side on before and after detecting part 113 and contact portion 112.Acquisition portion and controller setting exist
On bottom plate 115, in the space that support plate surrounds.
Using the support plate, dexterously all components are attached and are fixed.Cooperate between all parts of the device
Ingenious, design is unique, is fitted close between all parts, realizes the effective use to space.
Optionally, this refers to that venous collection device is connect by communication unit with smart machine, realizes information exchange.
Preferably, smart machine is personal computer or intelligent handheld device, but the utility model does not limit this
Fixed, any smart machine that can carry out authentication processing is included within the scope of the utility model.
The driving and management program for referring to venous collection device can be installed on intelligent devices, then operational management program is adopted
Collect the finger vein and/or finger print information of authentication registration user, and opens the finger vein and/or finger print identifying function of smart machine；
When starting smart machine or when needing to reuse intelligent set, it is desirable that carry out referring to vein and/or fingerprint identity validation, at this time
Using refer to venous collection device acquisition certification user finger vein and/or finger print information, certification software can by the information of acquisition with
The registration information stored in database is matched, if matching is consistent to indicate that certification passes through, can start smart machine automatically
Relative program.
It is quiet that another embodiment herein additionally provides a kind of finger using finger venous collection device as described above
Arteries and veins acquisition method.Fig. 3 is the schematic flow diagram for referring to vein collection method according to the first knuckle of one embodiment of the application.It should
Method may comprise steps of:
The first knuckle of finger is placed on contact portion by S100.
S300 infrared light supply transmitting infrared light is irradiated on the first knuckle.Optionally, the unlatching of infrared light supply can
To be controlled by controller.
S500 acquisition portion acquires the finger vein image of the first knuckle.Optionally, the unlatching in acquisition portion can be by controlling
Device control.
Using the present processes, it can easily be obtained merely with the first knuckle of user and refer to vein figure
Picture, it is convenient and efficient, as a result accurately.
Fig. 4 is the schematic flow diagram for referring to vein collection method according to the first knuckle of another embodiment of the application.It can
Selection of land, after S100, this method further includes that S200 contact portion judges that first knuckle whether there is and/or whether be in place, and is opened
Dynamic infrared light supply and acquisition portion.
Optionally, in S300: height, orientation of the infrared light supply according to the Mass adjust- ment infrared light supply for referring to vein image
And/or the intensity of light.
Referring to fig. 4, optionally, after S500, this method further include:
S600 controller controls infrared light supply and closes, and white light source is opened, and acquisition portion acquires the fingerprint of the first knuckle
Image.
It is provided by the present application to refer to that the acquisition of venous collection device refers to the method for vein image using first knuckle, it can be realized height
The finger vein imaging of quality.Light source is placed on theoretical analysis foundation and is easiest to influence image quality, most ideal by this method
The finger side-lower of structure design, may obtain the method for the near infrared light that picture quality impacts by active interception
To the finger vein image of high quality.Meanwhile the device also has the function of acquiring fingerprint, realizes and refers to that vein and the double of fingerprint adopt function
Energy.The device is changed by the Binary Factor determinism status of active light source design and camera system design determination device thickness
It is only determined to refer to venous collection device thickness by camera system object distance, significantly reduces the design difficulty of device.
The device is more frivolous and minimizes, and can be applied in more fields, can be adapted to more products, with
Under only lift two:
The certification of intelligent automobile driver identity, which particularly relates to vein identification technology to living things feature recognition, has larger demand,
But it in view of the factors such as venous collection equipment volume is larger are referred at present, is not possible to carry out effective application.Refer to that vein is adopted based on plane formula
The acquisition device of set method design, is successfully realized the miniaturization for referring to venous collection device, can satisfy the huge of the field and answer
Use demand.
There is also larger application demands to vein identification technology is referred to for the mobile devices such as tablet computer, mobile phone, but due to current
Refer to that venous collection device is not carried out planarization design so that refer to venous collection device can not effective integration it is big to tablet computer etc.
Mobile device is measured, the plane formula of the application refers to venous collection device, breaches this integrated limitation, successfully to refer to hand vein recognition skill
The effective application of art on the mobile terminal device provides ideal solution.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, those skilled in the art can incite somebody to action
Different embodiments or examples described in this specification are engaged and are combined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (9)
1. a kind of first knuckle refers to venous collection device, comprising:
Contact portion is in contact for the first knuckle with finger；
Acquisition portion is set to below the contact portion, the image of the finger vein for acquiring the first knuckle；
The two sides of the contact portion are arranged in infrared light supply；
It is characterized in that, being provided with boss between the contact portion and the infrared light supply, the boss is close to the infrared light
The height of source side is gradually decreased from the finger tip of the finger to the direction of the first knuckle.
2. the apparatus according to claim 1, which is characterized in that the boss is identical close to the side of contact portion height
And form the profile of the first knuckle shape.
3. the apparatus according to claim 1, which is characterized in that it further include finger detecting part, the finger detecting part and institute
It states contact portion to be arranged side by side, and the finger detecting part is electrically connected with the acquisition portion and the infrared light supply respectively, it is described
Finger detecting part is used to sense the presence of finger, to start the acquisition portion and the infrared light supply.
4. device according to claim 3, which is characterized in that the finger detecting part and the contact portion are along the hand
Refer to that the direction extended is arranged side by side, the finger detecting part is arranged far from one end of the finger tip.
5. device according to claim 3, which is characterized in that the finger detecting part is piezoelectric transducer or condenser type
Touch sensor.
6. device according to claim 4, which is characterized in that the infrared light supply is arranged along horizontal direction transmitting
Infrared light.
7. the apparatus according to claim 1, which is characterized in that further include white light source, the attached of the acquisition portion is arranged in
Closely, it is arranged along horizontal direction transmitting white light, so that the acquisition portion acquires the first knuckle using the white light
Fingerprint image.
8. device according to claim 7, which is characterized in that the device further includes controller, the controller respectively with
The infrared light supply, the acquisition portion are connected with the white light source, for controlling the infrared light supply and the white light source
It successively opens, and controls finger vein image and fingerprint image that the collecting part does not acquire the first knuckle.
9. according to claim 1 to 8 described in any item devices, which is characterized in that the contact portion be filter, be used for
So that the infrared light that the infrared light supply issues is irradiated to the acquisition portion through the filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821394720.0U CN208737488U (en) | 2018-08-28 | 2018-08-28 | First knuckle refers to venous collection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821394720.0U CN208737488U (en) | 2018-08-28 | 2018-08-28 | First knuckle refers to venous collection device |
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| Publication Number | Publication Date |
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| CN208737488U true CN208737488U (en) | 2019-04-12 |
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| CN201821394720.0U Active CN208737488U (en) | 2018-08-28 | 2018-08-28 | First knuckle refers to venous collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108734157A (en) * | 2018-08-28 | 2018-11-02 | 北京乾沛科技有限公司 | First knuckle refers to venous collection device and method |
-
2018
- 2018-08-28 CN CN201821394720.0U patent/CN208737488U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108734157A (en) * | 2018-08-28 | 2018-11-02 | 北京乾沛科技有限公司 | First knuckle refers to venous collection device and method |
| CN108734157B (en) * | 2018-08-28 | 2024-04-05 | 北京乾沛科技有限公司 | First knuckle finger vein collection device and method |
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Effective date of registration: 20220922 Address after: 518103 room 808, block B, building 6, Shenzhen International Innovation Valley, dashiyi Road, Xili community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: SHENZHEN XIZHUO TECHNOLOGY Co.,Ltd. Address before: 100081, room 3, building 17, 1004 South Avenue, Haidian District, Beijing, Zhongguancun Patentee before: BEIJING QIANPEI TECHNOLOGY CO.,LTD. |
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