CN208922281U - A kind of high-resolution palm print collecting device - Google Patents
A kind of high-resolution palm print collecting device Download PDFInfo
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- CN208922281U CN208922281U CN201821631777.8U CN201821631777U CN208922281U CN 208922281 U CN208922281 U CN 208922281U CN 201821631777 U CN201821631777 U CN 201821631777U CN 208922281 U CN208922281 U CN 208922281U
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- inner cavity
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- 238000003384 imaging method Methods 0.000 claims abstract description 31
- 238000005286 illumination Methods 0.000 claims description 6
- 238000009738 saturating Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of high-resolution palm print collecting devices, including device housing, acquisition window prism is fixedly connected on the left of the inner cavity upper end of described device shell, described device shell is fixedly connected with field-of-view lens in the lower end of acquisition window prism, the inner cavity left lower of described device shell is fixedly connected with the first reflective mirror, the inner cavity upper right of described device shell is fixedly connected with the second reflective mirror, third reflective mirror is fixedly connected on the right side of the inner cavity lower end of described device shell, imaging acquisition camera lens is fixedly connected on the left of the inner cavity lower end of described device shell, the imaging acquisition camera lens includes the first lens, second lens, the third lens, 4th lens, 5th lens and the 6th lens.The high-resolution palm print collecting device has much information acquisition mode by the overall structure of equipment, and integral device strengthens the processing of light.
Description
Technical field
The utility model relates to technical field of biometric identification, specially a kind of high-resolution palm print collecting device.
Background technique
With the development of biological identification technology, fingerprint acquisition instrument is most mature as technology, and application range is most widely biological
Identify that product applications are more and more wider.In order to accurately and effectively obtain more data, the size of acquisition window is wanted
Ask also increasing, and acquire image respectively rate also require it is higher and higher.The resolution ratio of palmmprint Acquisition Instrument currently on the market
It can satisfy 500DPI (Dots Per Inch), it is difficult to accomplish the high-resolution of 1000DPI, therefore we have proposed a kind of high
The palm print collecting device of resolution ratio.
Utility model content
The purpose of this utility model is to provide a kind of high-resolution palm print collecting devices, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the utility model provides the following technical solutions: a kind of high-resolution palm print collecting device,
Including device housing, acquisition window prism, the acquisition window rib are fixedly connected on the left of the inner cavity upper end of described device shell
The left end of mirror is fixedly connected with illumination backlight plate, and it is saturating that described device shell in the lower end of acquisition window prism is fixedly connected with visual field
Mirror, the inner cavity left lower of described device shell are fixedly connected with the first reflective mirror, the inner cavity upper right of described device shell
It is fixedly connected with the second reflective mirror, is fixedly connected with third reflective mirror, described device on the right side of the inner cavity lower end of described device shell
Be fixedly connected with imaging acquisition camera lens on the left of the inner cavity lower end of shell, the imaging acquisition camera lens include the first lens, second thoroughly
The inner cavity left side of mirror, the third lens, the 4th lens, the 5th lens and the 6th lens, the imaging acquisition camera lens is fixedly connected with
Imaging sensor.
Preferably, the inner cavity of the imaging acquisition camera lens be from left to right fixedly connected sequentially have the first lens, the second lens,
The third lens, the 4th lens, the 5th lens and the 6th lens, first lens, the third lens, the 4th lens and the 5th lens
Left side be in arc-shaped, the right end of second lens and the 6th lens is arc surface, the imaging acquisition camera lens light inlet
Inside is from left to right successively arranged the 4th lens and the third lens, and the 4th lens inside imaging acquisition camera lens light inlet and the
Three lens right sides are in arc surface.
Preferably, the field-of-view lens are planoconvex positive lens, and the field-of-view lens effective focal length is 475mm to 550mm,
There are 45 degree of angles with horizontal plane for the field-of-view lens.
Preferably, there are 15 degree of angle, the third reflective mirror is deposited with horizontal plane for second reflective mirror and horizontal plane
In 45 degree of angle.
Compared with prior art, the utility model has the beneficial effects that the high-resolution palm print collecting device, by setting
Standby overall structure can provide the high-resolution palm print Acquisition Instrument not less than 1000DPI, so that acquisition window combines the palm
Line acquisition, four refer to fingerprint collecting, two fingers fingerprint collecting, and rolling fingerprint acquisition singly refers to fingerprint collecting, has much information acquisition side
Formula, and integral device strengthens the processing of light, avoids the weak of light, so that the acquisition of information is more accurate.
Detailed description of the invention
Fig. 1 is the utility model section view；
Fig. 2 is the utility model imaging acquisition camera lens cross-sectional view.
In figure: 1 device housing, 2 illumination backlight plates, 3 acquisition window prisms, 4 field-of-view lens, 5 imaging acquisition camera lenses, 51
One lens, 52 second lens, 53 the third lens, 54 the 4th lens, 55 the 5th lens, 56 the 6th lens, 6 first reflective mirrors, 7
Two reflective mirrors, 8 third reflective mirrors, 9 imaging sensors.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of high-resolution palm print collecting device, packet
Device housing 1 is included, is fixedly connected with acquisition window prism 3, the acquisition window rib on the left of the inner cavity upper end of described device shell 1
3 material of mirror is the H-K9L glass of Chengdu light, and the angle of total reflection of acquisition window prism is greater than 43 degree, the acquisition window prism 3
Left end be fixedly connected with illumination backlight plate 2, described device shell 1 is fixedly connected with visual field in the lower end of acquisition window prism 3
Lens 4, the field-of-view lens 4 are planoconvex positive lens, and 4 effective focal length of field-of-view lens is 475mm to 550mm, and visual field is saturating
4 material of mirror is the H-ZK9B glass of Chengdu light.There are 45 degree of angles with horizontal plane for the field-of-view lens 4.Described device shell
The inner cavity left lower of body 1 is fixedly connected with the first reflective mirror 6, and the inner cavity upper right of described device shell 1 is fixedly connected with
Second reflective mirror 7, with horizontal plane there are 15 degree of angle, the third reflective mirror 8 exists second reflective mirror 7 with horizontal plane
45 degree of angle, is fixedly connected with third reflective mirror 8 on the right side of the inner cavity lower end of described device shell 1, described device shell 1 it is interior
Be fixedly connected with imaging acquisition camera lens 5 on the left of chamber lower end, the imaging acquisition camera lens 5 include the first lens 51, the second lens 52,
The third lens 53, the 4th lens 54, the 5th lens 55 and the 6th lens 56, the inner cavity of the imaging acquisition camera lens 5 is from left to right
Being fixedly connected sequentially has the first lens 51, the second lens 52, the third lens 53, the 4th lens 54, the 5th lens 55 and the 6th saturating
Mirror 56, first lens 51, the third lens 53, the 4th lens 54 and the 5th lens 55 left side be in arc-shaped, described the
The right end of two lens 52 and the 6th lens 56 is arc surface, is from left to right successively set inside 5 light inlet of imaging acquisition camera lens
There are the 4th lens 54 and the third lens 53, and 53 right side of the 4th lens 54 and the third lens inside 5 light inlet of imaging acquisition camera lens
End face is in arc surface.Imaging sensor 9, described image sensor 9 are fixedly connected on the left of the inner cavity of the imaging acquisition camera lens 5
Model GMAX08064300 resolution CMOS very much as sensor, the signal of acquisition is passed through imaging and number by imaging sensor 9
According to transmission circuit, i.e., is carried the data on host computer and handled using the data-interface of USB3.0.
Working principle: the illumination that high-resolution palm print collecting device illumination backlight plate 2 issues is mapped to acquisition window prism 3
Acquisition window face, acquisition window face formed be totally reflected.It is real when the acquisition window face of palm contacts acquisition window prism 3
Only the ridge of skin of palm of hand has touched acquisition window face on border, and the mountain valley of skin of palm of hand is then not exposed to acquisition window
Face.Total reflection can not be formed since the ridge of skin of palm of hand has touched acquisition window face.To form light and dark finger
The image of line, palmmprint.The light of total reflection, which passes through, forms convergence effect by field-of-view lens 4, so that entire light path system is formed
Telecentric beam path eliminates the distortion of entire imaging system, and the light by field-of-view lens calibration is using the first reflective mirror 6, the
Two reflective mirrors 7, third reflective mirror 8 reflection after enter imaging acquisition camera lens 5, and finally converge at imaging sensor 9, formed bright
The palmprint image of background.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of high-resolution palm print collecting device, including device housing (1), it is characterised in that: described device shell (1)
It is fixedly connected with acquisition window prism (3) on the left of the upper end of inner cavity, the left end of the acquisition window prism (3) is fixedly connected with illumination
Backlight (2), described device shell (1) are fixedly connected with field-of-view lens (4), the dress in the lower end of acquisition window prism (3)
The inner cavity left lower for setting shell (1) is fixedly connected with the first reflective mirror (6), the inner cavity upper right of described device shell (1)
It is fixedly connected with the second reflective mirror (7), is fixedly connected with third reflective mirror (8) on the right side of the inner cavity lower end of described device shell (1),
It is fixedly connected with imaging acquisition camera lens (5) on the left of the inner cavity lower end of described device shell (1), imaging acquisition camera lens (5) packet
Include the first lens (51), the second lens (52), the third lens (53), the 4th lens (54), the 5th lens (55) and the 6th lens
(56), imaging sensor (9) are fixedly connected on the left of the inner cavity of the imaging acquisition camera lens (5).
2. a kind of high-resolution palm print collecting device according to claim 1, it is characterised in that: the imaging acquisition mirror
The inner cavity of head (5) is from left to right fixedly connected sequentially and has the first lens (51), the second lens (52), the third lens (53), the 4th
Lens (54), the 5th lens (55) and the 6th lens (56), first lens (51), the third lens (53), the 4th lens
(54) and the left side of the 5th lens (55) is in arc-shaped, and the right end of second lens (52) and the 6th lens (56) is circular arc
Face is from left to right successively arranged the 4th lens (54) and the third lens (53) inside imaging acquisition camera lens (5) light inlet, and
The 4th lens (54) and the third lens (53) right side inside imaging acquisition camera lens (5) light inlet are in arc surface.
3. a kind of high-resolution palm print collecting device according to claim 1, it is characterised in that: the field-of-view lens
It (4) is planoconvex positive lens, field-of-view lens (4) effective focal length is 475mm to 550mm, the field-of-view lens (4) and level
There are 45 degree of angles in face.
4. a kind of high-resolution palm print collecting device according to claim 1, it is characterised in that: second reflective mirror
(7) with horizontal plane there are 15 degree of angle, there are 45 degree of angles with horizontal plane for the third reflective mirror (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821631777.8U CN208922281U (en) | 2018-10-09 | 2018-10-09 | A kind of high-resolution palm print collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821631777.8U CN208922281U (en) | 2018-10-09 | 2018-10-09 | A kind of high-resolution palm print collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208922281U true CN208922281U (en) | 2019-05-31 |
Family
ID=66708505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821631777.8U Expired - Fee Related CN208922281U (en) | 2018-10-09 | 2018-10-09 | A kind of high-resolution palm print collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208922281U (en) |
-
2018
- 2018-10-09 CN CN201821631777.8U patent/CN208922281U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 |
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| CF01 | Termination of patent right due to non-payment of annual fee |