CN206470779U - Biometric recognition device.It - Google Patents
Biometric recognition device.It Download PDFInfo
- Publication number
- CN206470779U CN206470779U CN201621427526.9U CN201621427526U CN206470779U CN 206470779 U CN206470779 U CN 206470779U CN 201621427526 U CN201621427526 U CN 201621427526U CN 206470779 U CN206470779 U CN 206470779U
- Authority
- CN
- China
- Prior art keywords
- light
- biometric recognition
- guide device
- recognition device
- image capture
- 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.)
- Expired - Fee Related
Links
- 230000031700 light absorption Effects 0.000 claims abstract description 19
- 230000003287 optical effect Effects 0.000 description 12
- 239000004568 cement Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 239000004425 Makrolon Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model provides a kind of biometric recognition device.It, and it includes light source, light-guide device, image capture element and first collimator.Light source is adapted to provide for light beam.Light-guide device is located on the bang path of light beam.Image capture element is located at below light-guide device and with multiple pixel regions.First collimator is located between light-guide device and image capture element, and wherein first collimator includes translucent element and light-absorption layer.Translucent element has first surface and second surface.Light-absorption layer configures on first surface and second surface and is open with expose first surface multiple first and exposes multiple the second of second surface and is open.First opening and the second superposition of end gap are in pixel region, and the aperture of the second opening is less than the first aperture being open.Wide-angle light beam is absorbed using light-absorption layer, will be transmitted to the beam collimation of image capture element, makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good identification capability.
Description
Technical field
The utility model is related to a kind of biometric recognition device.It.
Background technology
The species of biological characteristic identification includes face, sound, iris, retina, vein, fingerprint and palmmprint identification etc..By
It is unique in everyone fingerprint, and fingerprint is difficult to change with age or physical condition, therefore fingerprint
Device for identifying has turned into a kind of current most popular biometric recognition device.It.According to the difference of sensing mode, identification of fingerprint dress
Optical profile type and condenser type can be divided into by putting.Capacitance type fingerprint device for identifying is assembled in electronic product (for example：Mobile phone, tablet personal computer)
When, capacitance type fingerprint device for identifying top is provided with protection element (cover lens).In general, needing additional processing (for example
Drilling or thinning) protection element, so that capacitance type fingerprint device for identifying can sense when the capacitance or electricity caused by finger touching
Field change.
Compared to capacitance type fingerprint device for identifying, the light that the acquisition of optical fingerprint device for identifying penetrates readily through protection element enters
Row identification of fingerprint, and can without additional processing protection element, therefore and the combination of electronic product on more facilitate.
Optical fingerprint device for identifying generally includes light source, image capture element and translucent element.Light source is to send light
Beam, to irradiate the finger being pressed against on translucent element.The fingerprint of finger is made up of a plurality of irregular burr with dimpled grain.Quilt
The light beam that burr reflects with dimpled grain can be formed as the fingermark image that light and shade is interlocked on the receiving plane of image capture element.Image is picked
Take element that fingermark image can be converted to corresponding image information, and image information is inputted to processing unit.Processing unit can
The image information corresponding to fingerprint is calculated using algorithm, to carry out the identity identification of user.However, in above-mentioned capture
Cheng Zhong, image capture element is easily dispersedly transferred to by the light beam that fingerprint reflects, and causes capture poor quality, influence identification knot
Really.
Utility model content
The utility model provides a kind of biometric recognition device.It.
According to embodiment of the present utility model, biometric recognition device.It includes light source, light-guide device, image capture element
And first collimator.Light source is adapted to provide for light beam.Light-guide device is located on the bang path of light beam.Image capture element is located at
Below light-guide device and with multiple pixel regions.First collimator is located between light-guide device and image capture element, wherein the
Collimator includes translucent element and light-absorption layer.Translucent element has first surface and positioned at first surface and image capture
Second surface between element.Light-absorption layer, which is configured on first surface and second surface and had, exposes many of first surface
Individual first opening and multiple second openings for exposing second surface, wherein the first opening and the second superposition of end gap are in pixel
Area, and the aperture of the second opening is less than the first aperture being open.
In the biometric recognition device.It according to embodiment of the present utility model, light-guide device has light out part and company
It is connected to the light in part of light out part.Light source is co-located at below light out part with image capture element.Light in part is located at light source and light extraction
Between portion.
In the biometric recognition device.It according to embodiment of the present utility model, light source is located at the side of light-guide device.
In the biometric recognition device.It according to embodiment of the present utility model, light-guide device is towards first collimator
Surface is formed with multiple micro-structurals.Surface is protruded or be recessed in micro-structural.
In the biometric recognition device.It according to embodiment of the present utility model, the refractive index of translucent element falls 1.3
To in the range of 1.7.
In the biometric recognition device.It according to embodiment of the present utility model, aperture and the printing opacity member of each first opening
The height ratio of part falls in the range of 2 to 20.
In the biometric recognition device.It according to embodiment of the present utility model, aperture and the printing opacity member of each second opening
The height ratio of part falls in the range of 2 to 20.
In the biometric recognition device.It according to embodiment of the present utility model, translucent element also has the first table of connection
Face and the side wall of second surface, and light-absorption layer is also disposed on the wall of side.
In the biometric recognition device.It according to embodiment of the present utility model, biometric recognition device.It also includes lid
Plate, wherein light-guide device are located between cover plate and first collimator.
In the biometric recognition device.It according to embodiment of the present utility model, biometric recognition device.It also includes the
Two collimaters.Second collimater is located between light-guide device and first collimator.Second collimater includes multiple prisms, and prism
Drift angle be respectively directed to light-guide device.
Based on above-mentioned, in the biometric recognition device.It of embodiment of the present utility model, by modulation first opening with
The aperture of second opening is acted on and by the wide-angle light beam of light-guide device to absorb through thing to be identified, is picked with will be transmitted to image
The beam collimation of element is taken, makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good
Good identification capability.
Brief description of the drawings
Comprising accompanying drawing to further understand the utility model, and accompanying drawing is incorporated in this specification and constitutes this specification
A part.Embodiment of the present utility model is illustrated, and is used to explain principle of the present utility model together with the description.
Fig. 1 is the diagrammatic cross-section of the biometric recognition device.It of the embodiment of the utility model one；
Fig. 2 is a kind of enlarged drawing of light-guide device in Fig. 1；
Fig. 3 A are a kind of schematic top plan view of first collimator in Fig. 1；
Fig. 3 B are a kind of elevational schematic view of first collimator in Fig. 1；
Fig. 4 is a kind of diagrammatic cross-section of first collimator, image capture element and circuit board in Fig. 1；
Fig. 5 is light-guide device and a kind of enlarged drawing of the second collimater in Fig. 1；
Fig. 6 is the diagrammatic cross-section of the biometric recognition device.It of another embodiment of the utility model.
Drawing reference numeral explanation：
10：Thing to be identified；
100、100A：Biometric recognition device.It；
110：Light source；
112：Light-emitting component；
120、120A：Light-guide device；
122：Light out part；
124：Light in part；
130：Image capture element；
132：Charge coupled cell；
140：First collimator；
142：Translucent element；
144：Light-absorption layer；
150：Circuit board；
160：Cover plate；
170：Second collimater；
172：Prism；
B、B’、B1’、B2’：Light beam；
BA：Base angle；
C：Depression；
H：Highly；
M：Micro-structural；
O1：First opening；
O2：Second opening；
PR：Pixel region；
S、S’：Surface；
S1：First reflecting surface；
S2：Second reflecting surface；
S1421：First surface；
S1422：Second surface；
S1423：Side wall；
TA：Drift angle；
WO1、WO2：Aperture.
Embodiment
With detailed reference to one exemplary embodiment of the present utility model, the example of one exemplary embodiment is illustrated in accompanying drawing
In.Whenever possible, similar elements symbol is used for representing same or similar part in the accompanying drawings and the description.
Fig. 1 is the diagrammatic cross-section of the biometric recognition device.It of the embodiment of the utility model one.Fig. 1 is refer to, it is biological
Feature identification device 100 is, for example, fingeprint distinguisher, to recognize the fingerprint of thing 10 to be identified, but is not limited.Another
In one embodiment, biometric recognition device.It 100 also can be used to its of identification vein, palmmprint or fingerprint, vein and palmmprint
In at least two combination.
It is accurate that biometric recognition device.It 100 includes light source 110, light-guide device 120, image capture element 130 and first
Straight device 140.
Light source 110 is adapted to provide for light beam B.Light source 110 can be non-visible light sources or visible light source.That is,
Light beam B can be black light (for example：Infrared light) or visible ray is (for example：Feux rouges, blue and green light or its combination).Or, light
Source 110 can be the combination of non-visible light sources and visible light source.For example, light source 110 may include multiple light-emitting components
112.Light-emitting component 112 can be light-emittingdiode or the light-emitting component of other appropriate species.Fig. 1 schematically shows that two light
Element 112, and two light-emitting components, 112 opposite sides in image capture element 130.However, the quantity of light-emitting component 112 with
And configuration mode can change on demand, and it is not limited.
Light-guide device 120 is located on light beam B bang path, and its light beam B for being suitable to provide light source 110 is oriented to be identified
Thing 10.For example, the material of light-guide device 110 can for glass, makrolon (PC), polymethyl methacrylate (PMMA) or
Other suitable materials.In the present embodiment, light source 110 is located at the same side of light-guide device 120 with image capture element 130.It is raw
Thing feature identification device 100 further comprises circuit board 150.Light source 110 configures on circuit board 150 and electric with circuit board 150
Connection.Light-guide device 120 has light out part 122 and is connected to an at least light in part 124 for light out part 122.Light source 110 and shadow
As capturing element 130 is co-located at the lower section of light out part 122, and light source 110 is located at by image capture element 130.Light in part 124
Between light source 110 and light out part 122.Specifically, light in part 124 can be fixed on circuit board 150, and light in part 124 has
There is depression C.Depression C crosses the space for accommodating light source 110 with circuit board 150.In another embodiment, light in part 124 and circuit
The wherein at least one of plate 150 can have depression (not shown), to accommodate light source 110.In another embodiment, light in part 124
With circuit board 150 can by fixed mechanism (not shown) or adhesion layer (it is not shown, for example：Optical cement) it is fixed together.Again
In one embodiment, light in part 124 can by adhesion layer (it is not shown, for example：Optical cement) and be fixed on light source 110, and enter light
Portion 124 can not be contacted with circuit board 150.Fig. 1 schematically shows two light in part 124, and two light in part 124 are in light extraction
The opposite side in portion 122.However, the quantity and configuration mode of light in part 124 can change on demand, and it is not limited.
Fig. 2 is a kind of enlarged drawing of light-guide device in Fig. 1.Fig. 1 and Fig. 2 is refer to, the light beam B that light source 110 is projected enters certainly
Light portion 124 enters light-guide device 120, and light beam B can be transferred to light out part 122 via light in part 124.Light-guide device 120 towards
The surface S of first collimator 140 can be selectively formed multiple micro-structural M (Fig. 1 is not shown, refer to Fig. 2).Micro-structural M
Direction of transfer suitable for changing light beam B so that light out part vertically or close to ground direct projection of hanging down is gone out by the light beam B of micro-structural M reflection
122.As shown in Fig. 2 micro-structural M can protrude from surface S and can have the first reflecting surface S1 and the second reflecting surface S2.First is anti-
Face S1 and the second reflecting surface S2 is penetrated to be connected with each other, wherein the first reflecting surface S1 and the second reflecting surface S2 is tilted relative to surface S, and
First reflecting surface S1 is opposite with the second reflecting surface S2 incline direction.In one embodiment, micro-structural M, light out part 122 and enter
Light portion 124 can be integrally formed, but be not limited.In another embodiment, micro-structural M, light out part 122 and light in part 124
It can make respectively, then by bindiny mechanism or adhesion layer (for example：Optical cement) it is fixed together.Or, micro-structural M also can be recessed
In surface S.Specifically, micro-structural M can be formed in the depression on the S of surface.In addition, micro-structural M quantity and its distribution can
Change according to different demands, and be not limited to the quantity shown by Fig. 2 and distribution.
The output beam B of light out part 122 surface S ' and the surface S-phase pair for being formed with micro-structural M.In one embodiment, table
Face S ' can be the press surface pressed for thing 10 to be identified.In the case where surface S ' is the framework of press surface, as shown in Fig. 2 from light
The light beam B in source 110 is sequentially by light in part 124 and light out part 122, and in surface S ' experiences total internal reflections (Total
Internal Reflection, TIR), then sequentially reflected by the second reflecting surface S2 and the first reflecting surface S1, and it is vertical or
Close to vertically injection surface S '.
Or, as shown in figure 1, biometric recognition device.It 100 can further comprise cover plate 160 for thing 10 to be identified by
Pressure.Cover plate 160 is located at the top of light-guide device 120, and light-guide device 120 is located between cover plate 160 and first collimator 140.Lid
Plate 160 can be the electronic product to be assembled (for example：Contact panel or touch-control display panel) protection element (cover
Lens), but it is not limited.In one embodiment, cover plate 160 can be by bindiny mechanism or adhesion layer (example with light-guide device 120
Such as：Optical cement) and be fixed together, but be not limited.In the case of with adhesion layer securing cover plate 160 and light-guide device 120,
The refractive index of adhesion layer, cover plate 160 and light-guide device 120 can be same or like, to reduce interface reflection, and then is lifted biological special
Levy the light utilization ratio and/or capture quality of device for identifying 100.However, in other embodiments, adhesion layer, cover plate 160 are with leading
The refractive index of optical element 120 also can be different.In the case where setting the framework of cover plate 160, the light beam B from light source 110 is sequentially by entering
The light out part 122 of light portion 124 and cover plate 160, and the surface experiences total internal reflection pressed in cover plate 160 for thing 10 to be identified.Through
Thing 10 to be identified is acted on (for example：Diffusion) light beam B ' sequentially by cover plate 160 and light out part 122 and be transferred to surface S.Pass
Being handed to a surface S light beam B ' part can be reflected by surface S, and the surface pressed again towards cover plate 160 for thing 10 to be identified
Transmission.On the other hand, light-guide device 120 can be projected from surface S by being transferred to surface S light beam B ' another part.
Image capture element 130 is located at the lower section of light-guide device 120 and with the multiple pixels for example arranged in array
(pixel) area PR (being shown in Fig. 4), to receive the light beam B ' acted on through thing 10 to be identified, and then obtains the shadow of thing 10 to be identified
Picture.In the present embodiment, image capture element 130 is for example including multiple charge coupled cell (Charge-Coupled
Device, CCD) 132 (being shown in Fig. 4).Charge coupled cell 132 is configured on circuit board 150 and is electrically connected with circuit board 150
Connect.The region of charge coupled cell 132 is the pixel region PR of image capture element 130.In another embodiment, image is picked
Element 130 is taken to may include multiple complementary metal oxide semiconductors (Complementary Metal Oxide
Semiconductor, CMOS), and the region of complementary metal oxide semiconductor is the pixel region of image capture element 130
PR。
First collimator 140 is located between light-guide device 120 and image capture element 130, and first collimator 140 is located at
On the bang path of light beam B ' after the effect of thing 10 to be identified.For example, first collimator 140 is configurable on image capture member
On part 130, and first collimator 140 and image capture element 130 can be by bindiny mechanism or adhesion layers (for example：Optical cement) and
It is fixed together, but is not limited.
Fig. 3 A are a kind of schematic top plan view of first collimator in Fig. 1.Fig. 3 B are that one kind of first collimator in Fig. 1 is looked up
Schematic diagram.Fig. 4 is a kind of diagrammatic cross-section of first collimator, image capture element and circuit board in Fig. 1.Refer to Fig. 1,
Fig. 3 A to Fig. 4, first collimator 140 includes translucent element 142 and light-absorption layer 144.Translucent element 142 has first surface
S1421, the second surface S1422 between first surface S1421 and image capture element 130 and connection first surface
S1421 and second surface S1422 side wall S1423.Light-absorption layer 144 is configured in first surface S1421 and second surface
S1422 is upper and has the multiple first opening O1 for exposing first surface S1421 and exposes the multiple of second surface S1422
Second opening O2, wherein first opening O1 with second opening O2 be overlapped in pixel region PR so that sequentially by first opening O1 and
Second opening O2 light beam can be transferred to image capture element 130 (as shown in Fig. 4 light beam B2 ').In addition, the second opening
O2 aperture WO2 is less than the first opening O1 aperture WO1.
In the present embodiment, pixel region PR size may be slightly larger than the first opening O1 openings of aperture WO1 and second O2's
Aperture WO2, but be not limited.In addition, light-absorption layer 144 can be configured further on the side wall S1423 of translucent element 142,
To avoid the light beam being transmitted in translucent element 142 from being projected from side wall S1423.However, in another embodiment, light-absorption layer
144 can not configure on the side wall S1423 of translucent element 142.
When the light Transfer Medium between light-guide device 120 and first collimator 140 (for example：Air or optical cement) refraction
When rate is different from the refractive index of translucent element 142, light beam B ' (including the large angle incidence translucent elements of incident translucent element 142
The light beam B2 ' of the incident translucent element 142 of 142 light beam B1 ' and low-angle) can translucent element 142 first surface S1421
Enter translucent element 142 via refraction.Therefore, the setting of translucent element 142 contributes to converging beam B ' to enter the first collimation
The angle of device 140, and then allow more light beam B ' that image capture element 130 can be transferred to.
The material of translucent element 142 can using glass, makrolon (PC), polymethyl methacrylate (PMMA) or other
Suitable material.The material of light-absorption layer 144 can be for example used containing light absorbent (for example：Carbon) silica gel system or acryl system material
Material.Even if consequently, it is possible to the light beam of the incident translucent elements 142 of the light beam B1 ' and low-angle of large angle incidence translucent element 142
B2 ' all enters translucent element 142 by the first opening O1, is still inhaled using the light-absorption layer 144 on second surface S1422
Receive the light beam B1 ' of large angle incidence translucent element 142, and only allow the incident translucent element 142 of low-angle light beam B2 ' by and pass
It is handed to image capture element 130.In the case of pixel region PR dense arrangements, by being less than the second opening O2 aperture WO2
First opening O1 aperture WO1, can increase the extinction area of the light-absorption layer 144 on second surface S1422, and then contribute to
The light beam of large angle incidence translucent element 142 is avoided by the second opening O2 (the second opening O2 of obliquely downward) of non-underface
It is transferred to image capture element 130.
Whether the light beam into first collimator 140 is absorbed and can be depended on by the light-absorption layer 144 on second surface S1422
Aperture WO1, the second opening O2 aperture WO2, the height H and light beam B ' of translucent element 142 in the first opening O1 is in printing opacity
The first surface S1421 of element 142 refraction angle (being determined by light beam B ' incidence angle and the refractive index of translucent element 142)
Deng.In the case where the height H of translucent element 142 is definite value, the first opening O1 openings of aperture WO1 and second O2 aperture
WO2 is bigger, and the angular range for the light beam B ' that image capture element 130 is received is bigger.First opening O1 aperture WO1 and
In the case that second opening O2 aperture WO2 is definite value, the height H of translucent element 142 is bigger, and image capture element 130 is received
The light beam B ' arrived angular range is smaller.Aperture WO1, the second opening O2 aperture WO2 and printing opacity member in the first opening O1
In the case that the height H of part 142 is definite value, light beam B ' refraction angle is bigger (namely incidence angle is bigger), is more possible to be inhaled
Photosphere 144 absorbs.In the present embodiment, the refractive index of translucent element 142 is more than 1, and for example falls in the range of 1.3 to 1.7.
In addition, each first opening O1 aperture WO1 (being also the second opening O2 aperture WO2) and translucent element 142 height H ratios fall
In the range of 2 to 20.Each second opening O2 aperture WO2 and translucent element 142 height H ratios fall in the range of 2 to 20.So
And, the refractive index of translucent element 142, the first opening O1 aperture WO1 and the height H ratios of translucent element 142 and the second opening
O2 aperture WO2 can be according to different design requirements (for example from the height H ratios of translucent element 142：Image capture element 130
Pitch (pitch)) change, and be not limited to above-mentioned.
Absorbed using light-absorption layer 144 acted on through thing 10 to be identified and by the wide-angle light beam of light-guide device 120 (for example：
Light beam B1 '), can make only special angle light beam (the incident light beam of low-angle, for example：Light beam B2 ') it is transferred to image capture
Element 130.Via the appropriate opening of the modulation first O1 openings of aperture WO1 and second O2 aperture WO2, it can make by the
The light beam B ' of collimator 140 can be with 0 degree or close to 0 degree of the incident image capture element 130 of angle.In other words, first
Collimater 140 helps to will be transmitted to the beam collimation of image capture element 130.Veiling glare is filtered out in this way, not only helping,
Additionally aid avoid from difference second be open O2 output light beam B ' interfere the problem of, make taking for image capture element 130
As quality-improving.Therefore, biometric recognition device.It 100 can have good identification capability.Fig. 3 A and Fig. 3 B schematically show
That shows the openings of the first opening O1 and second O2 is shaped as circle, but is not limited.In other embodiments, the first opening O1
And second opening O2 shape can also be triangle, quadrangle, pentagon or other polygons.
According to different demands, biometric recognition device.It 100 may also include other elements.For example, biological characteristic is distinguished
Identification device 100 may also include the second collimater 170.Second collimater 170 be located at light-guide device 120 and first collimator 140 it
Between, and on light beam B ' of second collimater 170 after thing 10 to be identified effect bang path.For example, the second collimation
Device 170 is configurable on the S of surface, and the collimater 170 of light-guide device 120 and second can be by bindiny mechanism or adhesion layer (for example：
Optical cement) and be fixed together, but be not limited.
Second collimater 170 is suitable to before light beam B ' is by first collimator 140, in advance by light beam B ' collimationizations, with
Converging beam B ' the angle of divergence.In this way, probability of the light beam B ' subsequently through first collimator 140 can be increased.Fig. 5 be Fig. 1 in lead
A kind of enlarged drawing of optical element and the second collimater.Fig. 1 and Fig. 5 is refer to, the second collimater 170 may include multiple prisms
172, and the drift angle TA of prism 172 is respectively directed to light-guide device 120.In the present embodiment, two base angle BA of each prism 172
Angle is identical.However, the drift angle TA and base angle BA of prism 172 can change according to different demands, and not limited to this.
Fig. 6 is the diagrammatic cross-section of the biometric recognition device.It of another embodiment of the utility model.Fig. 6 biological characteristic
Device for identifying 100A is similar to Fig. 1 biometric recognition device.It 100, and biometric recognition device.It 100A has and biology spy
Device for identifying 100 similar effect and advantage are levied, is just no longer repeated in this.Fig. 6 biometric recognition device.It 100A's and Fig. 1
The difference of biometric recognition device.It 100 is that the position of light source 110 is different.Specifically, in the embodiment in fig 6, light source
110 are located at light-guide device 120A side.Under this framework, light-guide device 120A is, for example, tabular, and light-guide device 120A can
To omit the light in part 124 of light-guide device 120 in Fig. 1.
In summary, in the biometric recognition device.It of embodiment of the present utility model, by modulation first opening with
The aperture of second opening is acted on and by the wide-angle light beam of light-guide device to absorb through thing to be identified, is picked with will be transmitted to image
The beam collimation of element is taken, makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good
Good identification capability.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of biometric recognition device.It, it is characterised in that including：
Light source, is adapted to provide for light beam；
Light-guide device, on the bang path of the light beam；
Image capture element, below the light-guide device and with multiple pixel regions；And
First collimator, between the light-guide device and the image capture element, wherein the first collimator includes：
Translucent element, the second table with first surface and between the first surface and the image capture element
Face；And
Light-absorption layer, is configured on the first surface and the second surface, and the light-absorption layer has and exposes described the
Multiple first openings on one surface and multiple second openings for exposing the second surface, wherein the multiple first opening
Opened with the multiple second superposition of end gap in the pixel region, and the aperture of the multiple second opening less than the multiple first
The aperture of mouth.
2. biometric recognition device.It according to claim 1, it is characterised in that the light-guide device have light out part with
And the light in part of the light out part is connected to, the light source is co-located at below the light out part with the image capture element,
The light in part is located between the light source and the light out part.
3. biometric recognition device.It according to claim 1, it is characterised in that the light source is located at the light-guide device
Side.
4. biometric recognition device.It according to claim 1, it is characterised in that the light-guide device is towards described first
The surface of collimater is formed with multiple micro-structurals, and the surface is protruded or be recessed in the multiple micro-structural.
5. biometric recognition device.It according to claim 1, it is characterised in that the refractive index of the translucent element falls
In the range of 1.3 to 1.7.
6. biometric recognition device.It according to claim 1, it is characterised in that the aperture of each the multiple first opening
Fall with the height ratio of the translucent element in the range of 2 to 20.
7. biometric recognition device.It according to claim 1, it is characterised in that the aperture of each the multiple second opening
Fall with the height ratio of the translucent element in the range of 2 to 20.
8. biometric recognition device.It according to claim 1, it is characterised in that the translucent element also has connection institute
The side wall of first surface and the second surface is stated, and the light-absorption layer is also disposed on the side wall.
9. biometric recognition device.It according to claim 1, it is characterised in that also include：
Cover plate, wherein the light-guide device is located between the cover plate and the first collimator.
10. biometric recognition device.It according to claim 1, it is characterised in that also include：
Second collimater, between the light-guide device and the first collimator, second collimater includes multiple ribs
Mirror, and the drift angle of the multiple prism is respectively directed to the light-guide device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427526.9U CN206470779U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
| TW106201203U TWM553016U (en) | 2016-12-23 | 2017-01-24 | Biological feature identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427526.9U CN206470779U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206470779U true CN206470779U (en) | 2017-09-05 |
Family
ID=59712295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621427526.9U Expired - Fee Related CN206470779U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206470779U (en) |
| TW (1) | TWM553016U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107844767A (en) * | 2017-10-31 | 2018-03-27 | 维沃移动通信有限公司 | A kind of collimater, optical finger print identifier and comprehensive screen |
| US10043847B2 (en) | 2014-08-26 | 2018-08-07 | Gingy Technology Inc. | Image capturing module and electrical apparatus |
| CN109239938A (en) * | 2018-10-11 | 2019-01-18 | 京东方科技集团股份有限公司 | Optical alignment structure and preparation method thereof, fingerprint identification device |
-
2016
- 2016-12-23 CN CN201621427526.9U patent/CN206470779U/en not_active Expired - Fee Related
-
2017
- 2017-01-24 TW TW106201203U patent/TWM553016U/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10043847B2 (en) | 2014-08-26 | 2018-08-07 | Gingy Technology Inc. | Image capturing module and electrical apparatus |
| CN107844767A (en) * | 2017-10-31 | 2018-03-27 | 维沃移动通信有限公司 | A kind of collimater, optical finger print identifier and comprehensive screen |
| WO2019085859A1 (en) * | 2017-10-31 | 2019-05-09 | 维沃移动通信有限公司 | Collimator, optical fingerprint recognizer, and fullscreen |
| CN107844767B (en) * | 2017-10-31 | 2020-03-17 | 维沃移动通信有限公司 | Collimator, optical fingerprint identifier and comprehensive screen |
| CN109239938A (en) * | 2018-10-11 | 2019-01-18 | 京东方科技集团股份有限公司 | Optical alignment structure and preparation method thereof, fingerprint identification device |
| US11495044B2 (en) | 2018-10-11 | 2022-11-08 | Beijing Boe Technology Development Co., Ltd. | Fingerprint sensing display apparatus, method of using fingerprint sensing display apparatus, and method of fabricating fingerprint sensing display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM553016U (en) | 2017-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206470775U (en) | Biometric recognition device.It | |
| CN206470777U (en) | Biometric recognition device.It | |
| KR101915121B1 (en) | Display screen with fingerprint acquisition | |
| CN206489580U (en) | Biometric recognition device.It | |
| WO2020119330A1 (en) | Fingerprint recognition apparatus and electronic device | |
| CN108241830A (en) | Biometric recognition device.It | |
| CN108241834A (en) | Biometric recognition device.It | |
| CN206470779U (en) | Biometric recognition device.It | |
| CN206497471U (en) | Biometric recognition device.It | |
| CN206532302U (en) | Biological identification device | |
| CN206657362U (en) | Biological identification device | |
| CN108241838A (en) | Biometric recognition device.It | |
| CN206470776U (en) | Biometric recognition device.It | |
| CN108241824A (en) | Biometric recognition device.It | |
| CN206470778U (en) | Biological identification device | |
| CN108629245A (en) | Biological identification device | |
| US20110057130A1 (en) | Flip-chip type image-capturing module | |
| CN108241823A (en) | Biometric recognition device.It | |
| KR20220073835A (en) | Method and electronic device for authenticating image acquisition optical structures and biometric features | |
| CN206541316U (en) | Biometric recognition device.It | |
| CN108629244A (en) | Biological identification device | |
| CN108241826A (en) | Biometric recognition device.It | |
| CN108241833A (en) | Biometric recognition device.It | |
| CN206877339U (en) | Biometric devices | |
| CN108241832A (en) | Biological identification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 |