CN106707451A - Fingerprint and vein collection integration optical system - Google Patents
Fingerprint and vein collection integration optical system Download PDFInfo
- Publication number
- CN106707451A CN106707451A CN201710087623.0A CN201710087623A CN106707451A CN 106707451 A CN106707451 A CN 106707451A CN 201710087623 A CN201710087623 A CN 201710087623A CN 106707451 A CN106707451 A CN 106707451A
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- China
- Prior art keywords
- eyeglass
- lens
- plane
- spherical surface
- object plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 47
- 210000003462 vein Anatomy 0.000 title claims abstract description 24
- 230000010354 integration Effects 0.000 title abstract 2
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 4
- 239000005331 crown glasses (windows) Substances 0.000 claims description 9
- 239000005308 flint glass Substances 0.000 claims description 9
- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 description 7
- 230000004075 alteration Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003361 heart septum Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Abstract
The invention discloses a fingerprint and vein collection integration optical system, comprising a 45-degree triangular prism, a first lens, a second lens, a glued lens and a third lens, wherein the oblique plane of the 45-degree triangular prism faces to the object plane of the first lens; a layer of semi-reflecting and semi-transmitting film is arranged on the oblique plane of the 45-degree triangular prism, and the ratio of a projection rate to a reflection rate of the semi-reflecting and semi-transmitting film is equal to 1: 1; the object plane of the first lens is a convex spherical surface, and the image plane of the first lens is a concave spherical surface; the object plane of the second lens is a convex spherical surface, and the image plane of the second lens is a concave spherical surface; the glued lens is formed by gluing a front lens and a rear lens, wherein the object plane and the image plane of the front lens are respectively a convex spherical surface and a concave spherical surface, and the object plane and the image plane of the rear lens are respectively a convex spherical surface and a plane; the object plane of the third lens is a concave spherical surface, and the image plane of the third lens is a plane. The visible light at a band of 550nm and the infrared light at a band of 850nm can pass through the complete set of optical system without mutual interference, so that fingerprint and vein can be collected at the same time.
Description
Technical field
The present invention relates to optical system, more particularly to a kind of fingerprint and the optical system of vein one collection.
Background technology
The current optical finger print having on the market, the optical system of optics venous collection are all separately independent.Both works
Make principle and working environment is completely different.Under the light of visible light wave range (400-600nm), venous collection is fingerprint collecting
Under the light of infrared band (850nm), and image-forming principle is different.Fingerprint collecting is reflected in the plane by light, optics
What system acquisition light was realized in the image that fingerprint reflects in the plane.Venous collection is then different, and it is by gathering light
After finger, the effect that light is absorbed by the cell in blood is imaged to realize.The false proof grade of optically detecting of fingerprint is low
And the low problem of optical system resolution of venous collection causes that they have certain inferior position, if both are combined
Come, these inferior positions can just be eliminated, but because they are operated in different optical regions, and image-forming principle has difference, how
It is a problem in optical system that sample effectively combines both.
The content of the invention
It is an object of the invention to provide a kind of fingerprint and the optical system of vein one collection, it can be in two kinds of optical bands
In the environment of mutually without interfering with each other by a whole set of optical system.
Realizing the technical scheme of above-mentioned purpose is：A kind of fingerprint and vein one collection optical system, including from it is preceding extremely
45 ° of prisms on primary optical axis, the first eyeglass, the second eyeglass, cemented doublet and the 3rd eyeglass are set in turn in afterwards；Wherein,
The inclined-plane of 45 ° of triangular prism prisms is coated with against the object plane of the first eyeglass on 45 ° of inclined-planes of triangular prism prism
One layer of part reflective semitransparent film, the projection ratio of the part reflective semitransparent film and the ratio of reflectivity are 1：1；
The object plane of first eyeglass is convex spherical, and image planes are concave spherical surface；
The object plane of second eyeglass is convex spherical, and image planes are concave spherical surface；
The cemented doublet by an object plane be concave spherical surface, image planes for concave spherical surface front lens and an object plane be convex spherical, as
Face forms for the rear lens gluing of plane.
The object plane of the 3rd eyeglass is concave spherical surface, and image planes are plane.
Above-mentioned fingerprint and the optical system of vein one collection, wherein, the thickness of the part reflective semitransparent film is less than
0.05mm。
Above-mentioned fingerprint and the optical system of vein one collection, wherein, the radius of curvature of the object plane of first eyeglass
More than the radius of curvature of the object plane of the second eyeglass；The radius of curvature of the image planes of first eyeglass is more than the image planes of the second eyeglass
Radius of curvature.
Above-mentioned fingerprint and the optical system of vein one collection, wherein, 45 ° of triangular prism prisms use crown glass；
First eyeglass uses dense flint glass；Second eyeglass uses crown glass；The front lens uses lanthanum flint glass；Institute
State rear lens and use crown glass；3rd eyeglass uses lanthanum flint glass.
The beneficial effects of the invention are as follows：Without switching any means, can just make the light of visible ray 550nm wave bands and infrared
The light of light 850nm wave bands realizes that fingerprint and vein can maximal efficiencies simultaneously mutually without interfering with each other by a whole set of optical system
Optical image acquisition.
Brief description of the drawings
Fig. 1 is the structural representation of the optical system of fingerprint of the invention and vein one collection；
Fig. 2 is the modulation light of the optical system under visible ray 550nm wave bands of fingerprint of the invention and vein one collection
Learn transfer curve figure；
Fig. 3 is the modulation light of the optical system under infrared light 850nm wave bands of fingerprint of the invention and vein one collection
Learn transfer curve figure；
Fig. 4 is distortion and the curvature of field figure of the optical system of fingerprint of the invention and vein one collection
Fig. 5 is the blur circle schematic diagram of the optical system of fingerprint of the invention and vein one collection；
Fig. 6 is the illuminance of image plane curve map of the optical system of fingerprint of the invention and vein one collection.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The optical system of Fig. 1, fingerprint of the invention and vein one collection is referred to, including is set in turn in from A-P
45 ° of triangular prism prisms 1, the first eyeglass 2, the second eyeglass 3 on primary optical axis, the eyeglass 5 of cemented doublet 4 and the 3rd；Wherein：
45 ° of triangular prism prisms 1 are the prisms of isosceles right triangle for cross section, it with the horizontal 45 ° of inclined-plane
Against the object plane of the first eyeglass 2；45 ° of triangular prism prisms 1 are coated with one and half anti-using crown glass (H-K9L) on its inclined-plane
Pellicle, the projection ratio of semi-transparent semi-reflecting film and the ratio of reflectivity are 1：1, the thickness of semi-transparent semi-reflecting film is less than 0.05mm；
The object plane of the first eyeglass 2 is convex spherical, and image planes are concave spherical surface；First eyeglass 2 is using dense flint glass (H-ZF4)；
The object plane of the second eyeglass 3 is convex spherical, and image planes are concave spherical surface；Second eyeglass 3 is using crown glass (H-K9L)；
Radius of curvature of the radius of curvature of the object plane of the first eyeglass 2 more than the object plane of the second eyeglass 3；The picture of the first eyeglass 2
Radius of curvature of the radius of curvature in face more than the image planes of the second eyeglass 3；
The object plane of front lens 41 and that cemented doublet 4 is concave spherical surface by an object plane, image planes are concave spherical surface is convex spherical, image planes
For the gluing of rear lens 42 of plane is formed；Front lens 41 is using lanthanum flint glass (h-laf2)；Rear lens 42 is using crown glass (h-
k9l)；
The object plane of the 3rd eyeglass 5 is concave spherical surface, and image planes are plane；3rd eyeglass 5 is using lanthanum flint glass (H-LAF1).
The optical lens module being made up of the first eyeglass 2, the second eyeglass 3, the eyeglass 5 of cemented doublet 4 and the 3rd is that object space is remote
Heart light path system.
Fingerprint of the invention and the optical system of vein one collection, one layer is coated with 45 ° of inclined-planes of triangular prism prism 1
Part reflective semitransparent film, can be it will be seen that the light of light 550nm wave bands reflects and by finger by optimizing by the first eyeglass 2, second
The optical lens module that eyeglass 3, cemented doublet 4 and the 3rd eyeglass 5 are constituted is imaged onto up on sensitive chip 6；Can also be by infrared light
The light that the light of 850nm wave bands is transmitted through finger passes through by the first eyeglass 2, the second eyeglass 3, the mirror of cemented doublet 4 and the 3rd
The optical lens module that piece 5 is constituted is imaged onto on sensitive chip 6.It is a feature of the present invention that passing through same set of optics of lens system
System, using two kinds of Single wavelength light of different-waveband to same object --- the image information of finger is acquired.Realize
A set of optical lens module simultaneously to fingerprint image and the target of vein image acquisition, and can utilize object space telecentric beam path
It is small (depth of field of Systems Theory can reach 4mm) to solve pattern distortion (image final theoretical distortion within 3%), image depth
The problem low with image resolution ratio.The optical transfer function curve of the visible Fig. 3 of resolution ratio, also using achromatic cemented doublet 4
The imaging aberrations under visible ray 550nm wave bands and under infrared light 850nm wave bands to solve the problems, such as, by adjusting in optical lens group
The unit such as curvature, material, middle heart septum of each lens usually balances the various aberrations worked under two wave bands so that it is final into
As quality reaches a balance.
First eyeglass 2, the second eyeglass 3, the eyeglass 5 of cemented doublet 4 and the 3rd are all taken from the bright glass storehouse in Chengdu.Pass through
The unlike material of these lens, refractive index and abbe number are mutually combined to correct the aberration of whole system, the whole system of lifting
The image quality of system.
From figure 2, it is seen that under visible ray 550nm wave bands, whole optical system analytic solution, this is that whole system exists
One of performance parameter worked under this wave band, is a kind of evaluation method of the resolution ratio of whole system.Have in figure respectively different
The curve map of visual field.
As can be seen from Figure 3, under infrared light 850nm wave bands, whole optical system analytic solution, this is that whole system exists
One of performance parameter worked under this wave band, is a kind of evaluation method of the resolution ratio of whole system.Have in figure respectively different
The curve map of visual field.
As can be seen from Figure 4, in different visual fields, the distortion size of whole optical system imaging distorts as can see from Figure 2
It is to be distributed according to rule, and maximum distortion amount, in 0.06% (general optical system distorts within 10%), the curvature of field is also small
In 0.1%, it is seen that system of the invention has corrected distortion well, so as to ensure that the image stabilization of system.
The aberration that Fig. 5 embodies different view field imagings embodies situation, embodies the distribution of aberration in different field of view,
It is to evaluate an a kind of important way for optical system entirety imaging characteristic.It can be seen that the aberration of each visual field all has corrected that
To the limit, reach in 3 μ ms, the blur circle of each visual field is than more uniform.
Fig. 6 embodies light by illumination patterns situation in image planes different zones after optical system, embodies different visual field light
The attenuation of illumination, as we can see from the figure curve illustrate whole visual field model close to straight line, and all in 1 position
Enclose interior illumination highly uniform, decay can be ignored.
Above example is used for illustrative purposes only, rather than limitation of the present invention, about the technology people of technical field
Member, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all equivalent
Technical scheme should also belong to scope of the invention, should be limited by each claim.
Claims (4)
1. the optical system that a kind of fingerprint and vein one are gathered, including 45 ° of ribs on primary optical axis are set in turn in from A-P
Mirror, the first eyeglass, the second eyeglass, cemented doublet and the 3rd eyeglass；Characterized in that,
The inclined-plane of 45 ° of triangular prism prisms is coated with one layer against the object plane of the first eyeglass on 45 ° of inclined-planes of triangular prism prism
Part reflective semitransparent film, the projection ratio of the part reflective semitransparent film and the ratio of reflectivity are 1：1；
The object plane of first eyeglass is convex spherical, and image planes are concave spherical surface；
The object plane of second eyeglass is convex spherical, and image planes are concave spherical surface；
The front lens and an object plane that the cemented doublet is concave spherical surface by an object plane, image planes are concave spherical surface are convex spherical, image planes are
The rear lens gluing of plane is formed.
The object plane of the 3rd eyeglass is concave spherical surface, and image planes are plane.
2. the optical system that fingerprint according to claim 1 and vein one are gathered, it is characterised in that the half-reflection and half-transmission
The thickness of film is less than 0.05mm.
3. the optical system that fingerprint according to claim 1 and vein one are gathered, it is characterised in that first eyeglass
Object plane radius of curvature more than the second eyeglass object plane radius of curvature；The radius of curvature of the image planes of first eyeglass is more than
The radius of curvature of the image planes of the second eyeglass.
4. the optical system that fingerprint according to claim 1 and vein one are gathered, it is characterised in that 45 ° of triangles
Post prism uses crown glass；First eyeglass uses dense flint glass；Second eyeglass uses crown glass；The front lens
Using lanthanum flint glass；The rear lens uses crown glass；3rd eyeglass uses lanthanum flint glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087623.0A CN106707451A (en) | 2017-02-17 | 2017-02-17 | Fingerprint and vein collection integration optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087623.0A CN106707451A (en) | 2017-02-17 | 2017-02-17 | Fingerprint and vein collection integration optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106707451A true CN106707451A (en) | 2017-05-24 |
Family
ID=58911730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710087623.0A Pending CN106707451A (en) | 2017-02-17 | 2017-02-17 | Fingerprint and vein collection integration optical system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106707451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108596136A (en) * | 2018-05-02 | 2018-09-28 | 苏州大学 | Fingerprint and the dual biological characteristic of vein extract optical imaging system |
| CN110008945A (en) * | 2019-04-04 | 2019-07-12 | 京东方科技集团股份有限公司 | A kind of lines identification mould group and preparation method thereof, display device |
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| CN101504722A (en) * | 2009-03-20 | 2009-08-12 | 公安部第一研究所 | Multi-mode combined identity authentication system and method |
| CN203042217U (en) * | 2013-02-01 | 2013-07-10 | 长春理工大学 | Vein seeking device |
| CN104318204A (en) * | 2014-09-29 | 2015-01-28 | 上海箩箕技术有限公司 | Fingerprint imaging system and method, fingerprint identification system, electronic apparatus |
| US20160104028A1 (en) * | 2012-09-27 | 2016-04-14 | Truelight Corporation | Biometric Authentication Device and Method |
| CN106056105A (en) * | 2016-07-11 | 2016-10-26 | 福建省宜品生物科技有限公司 | Identification apparatus integrated with fingerprint and vein identification, and identification method |
| CN206497248U (en) * | 2017-02-17 | 2017-09-15 | 埃卫达智能电子科技（苏州）有限公司 | The optical system that a kind of fingerprint and vein are integrally gathered |
-
2017
- 2017-02-17 CN CN201710087623.0A patent/CN106707451A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504722A (en) * | 2009-03-20 | 2009-08-12 | 公安部第一研究所 | Multi-mode combined identity authentication system and method |
| US20160104028A1 (en) * | 2012-09-27 | 2016-04-14 | Truelight Corporation | Biometric Authentication Device and Method |
| CN203042217U (en) * | 2013-02-01 | 2013-07-10 | 长春理工大学 | Vein seeking device |
| CN104318204A (en) * | 2014-09-29 | 2015-01-28 | 上海箩箕技术有限公司 | Fingerprint imaging system and method, fingerprint identification system, electronic apparatus |
| CN106056105A (en) * | 2016-07-11 | 2016-10-26 | 福建省宜品生物科技有限公司 | Identification apparatus integrated with fingerprint and vein identification, and identification method |
| CN206497248U (en) * | 2017-02-17 | 2017-09-15 | 埃卫达智能电子科技（苏州）有限公司 | The optical system that a kind of fingerprint and vein are integrally gathered |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108596136A (en) * | 2018-05-02 | 2018-09-28 | 苏州大学 | Fingerprint and the dual biological characteristic of vein extract optical imaging system |
| CN108596136B (en) * | 2018-05-02 | 2021-10-26 | 苏州大学 | Fingerprint and vein dual biological feature extraction optical imaging system |
| CN110008945A (en) * | 2019-04-04 | 2019-07-12 | 京东方科技集团股份有限公司 | A kind of lines identification mould group and preparation method thereof, display device |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181217 Address after: Room A1003, 1st floor, 223 Jianghan Road, Minhang District, Shanghai, 201112 Applicant after: SHANGHAI HAZHE ELECTRONICS Co.,Ltd. Address before: 215143 No. 243 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: IOIP CHINA CO.,LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |