CN206470775U - Biometric recognition device.It - Google Patents
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- CN206470775U CN206470775U CN201621425433.2U CN201621425433U CN206470775U CN 206470775 U CN206470775 U CN 206470775U CN 201621425433 U CN201621425433 U CN 201621425433U CN 206470775 U CN206470775 U CN 206470775U
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Abstract
The utility model provides a kind of biometric recognition device.It, and it includes light source, leaded light component, image-pickup assembly and first collimator.Light source is adapted to provide for light beam.Leaded light component is located on the bang path of light beam.Image-pickup assembly is located at below leaded light component and with multiple pixel regions.First collimator is located between leaded light component and image-pickup assembly and including the first collimator assembly and the second collimator assembly.First collimator assembly includes the first light-transmitting component, the first light-absorption layer and multiple lens subassemblies.The configuration of first light-absorption layer is on the first light-transmitting component and with multiple first openings for being overlapped in pixel region.Lens subassembly configuration is on the first light-transmitting component and in the first opening.The light absorbing element of second collimator assembly and the first opening are located at the opposite side of the first light-transmitting component respectively, and light absorbing element has multiple second openings for being overlapped in the first opening.Biometric recognition device.It of the present utility model 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 PC)
When, capacitance type fingerprint device for identifying top is more provided with protection component (cover lens).In general, needing additional processing (for example
Drilling or thinning) protection component, 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, optical fingerprint device for identifying, which captures to penetrate readily through, protects the light of component to enter
Row identification of fingerprint, and can without additional processing protect component, therefore and the combination of electronic product on more facilitate.
Optical fingerprint device for identifying generally includes light source, image-pickup assembly and light-transmitting component.Light source is to send light
Beam, to irradiate the finger being pressed against on light-transmitting component.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-pickup assembly.Image is picked
Take component 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 process
In, image-pickup assembly is easily dispersedly transferred to by the light beam that fingerprint reflects, and cause capture quality not good, 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, leaded light component, image-pickup assembly
And first collimator.Light source is adapted to provide for light beam.Leaded light component is located on the bang path of light beam.Image-pickup assembly is located at
Below leaded light component and with multiple pixel regions.First collimator is located between leaded light component and image-pickup assembly, wherein the
Collimator includes the first collimator assembly and the second collimator assembly.First collimator assembly includes the first light-transmitting component, the first suction
Photosphere and multiple lens subassemblies.The configuration of first light-absorption layer is on the first light-transmitting component and with being overlapped in multiple the of pixel region
One opening.Lens subassembly configuration is on the first light-transmitting component and is located in one of respectively in the first opening.Second collimator assembly
Including light absorbing element.Light absorbing element and the first opening are located at the opposite side of the first light-transmitting component respectively, and light absorbing element has weight
It is laminated on multiple second openings of the first opening.
In the biometric recognition device.It according to embodiment of the present utility model, leaded light component 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-pickup assembly.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, leaded light component 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 aperture of each first opening and first saturating
The height ratio of optical assembly falls in the range of 2 to 20.
In the biometric recognition device.It according to embodiment of the present utility model, light absorbing element is the second light-absorption layer.The
Two light-absorption layers are located between the first light-transmitting component and image-pickup assembly, and the second opening is formed in the second light-absorption layer.Each
The aperture of two openings and the height ratio of the first light-transmitting component fall in the range of 2 to 20.
In the biometric recognition device.It according to embodiment of the present utility model, the aperture of the second opening is less than or equal to
The aperture of first opening.
In the biometric recognition device.It according to embodiment of the present utility model, it is saturating that the second collimator assembly also includes second
Optical assembly and the 3rd light-absorption layer.Second light-transmitting component is located between the second light-absorption layer and image-pickup assembly, and the 3rd extinction
Layer is located at the opposite side of the second light-transmitting component with the second light-absorption layer respectively.3rd light-absorption layer, which has, is overlapped in the multiple of the second opening
3rd opening.
In the biometric recognition device.It according to embodiment of the present utility model, the aperture of the first opening is more than or equal to
The aperture of second opening, and the aperture of the second opening is more than or equal to the 3rd aperture being open.
In the biometric recognition device.It according to embodiment of the present utility model, the second collimator assembly also includes multiple the
Two light-transmitting components.Second light-transmitting component configure in the second opening, wherein the refractive index of the second light-transmitting component respectively fall in 1.3 to
In the range of 1.7, and the aperture of each second opening and the height ratio of the second light-transmitting component fall in the range of 2 to 20.
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 leaded light component and first collimator.Second collimater includes multiple prisms.Prism
Drift angle is respectively directed to the leaded light component.
Based on above-mentioned, in the biometric recognition device.It of embodiment of the present utility model, using the first collimator assembly with
And second collimator assembly will be transmitted to the beam collimation of image-pickup assembly, make the capture increased quality of image-pickup assembly.
Therefore, biometric recognition device.It can have 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 leaded light component in Fig. 1；
Fig. 3 is a kind of schematic diagram of the first collimator assembly of first collimator in Fig. 1；
Fig. 4 is the first diagrammatic cross-section of first collimator, image-pickup assembly and circuit board in Fig. 1；
Fig. 5 is leaded light component 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；
Fig. 7 to Fig. 9 is respectively second to of first collimator in Fig. 1 and Fig. 6, image-pickup assembly and circuit board
Four kinds of diagrammatic cross-sections；
Figure 10 is a kind of elevational schematic view of the first collimator assembly of first collimator in Fig. 9.
Symbol description：
10：Thing to be identified；
100、100A：Biometric recognition device.It；
110：Light source；
112：Luminescence component；
120、120A：Leaded light component；
122：Light out part；
124：Light in part；
130：Image-pickup assembly；
132：Charged Coupled Device；
140、140A、140B、140C：First collimator；
142、142C：First collimator assembly；
144、144A、144B、144C：Second collimator assembly；
150：Circuit board；
160：Cover plate；
170：Second collimater；
172：Prism；
1421：First light-transmitting component；
1422：First light-absorption layer；
1423：Lens subassembly；
1441：Light absorbing element；
1442：Second light-transmitting component；
1443：3rd light-absorption layer；
B、B’、B1’、B2’：Light beam；
BA：Base angle；
C：Depression；
H1、H2：Highly；
M：Micro-structural；
O1：First opening；
O2：Second opening；
O3：3rd opening；
PR：Pixel region；
S、S’、S1421A、S1421B、S1442A、S1442B：Surface；
S1：First reflecting surface；
S2：Second reflecting surface；
S1442：Upper surface；
S1421C、S1442C：Side wall；
TA：Drift angle；
W1442：Width；
WO1、WO2、WO3：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, same components 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, leaded light component 120, image-pickup assembly 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 luminescence components
112.Luminescence component 112 can be light emitting diode or the luminescence component of other appropriate species.Fig. 1 schematically shows that two light
Component 112, and two luminescence components, 112 opposite sides in image-pickup assembly 130.However, the quantity of luminescence component 112 with
And configuration mode can change on demand, and it is not limited.
Leaded light component 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 leaded light component 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 leaded light component 120 with image-pickup assembly 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.Leaded light component 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 acquisition component 130 is co-located at the lower section of light out part 122, and light source 110 is located at by image-pickup assembly 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 leaded light component 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 leaded light component 120, and light beam B can be transferred to light out part 122 via light in part 124.Leaded light component 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 leaded light component 120, and leaded light component 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 component (cover
Lens), but it is not limited.In one embodiment, cover plate 160 can be by bindiny mechanism or adhesion layer (example with leaded light component 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 leaded light component 120,
The refractive index of adhesion layer, cover plate 160 and leaded light component 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 assembly 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, leaded light component 120 can be projected from surface S by being transferred to surface S light beam B ' another part.
Image-pickup assembly 130 is located at the lower section of leaded light component 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-pickup assembly 130 is for example including multiple Charged Coupled Device (Charge-Coupled
Device, CCD) 132 (being shown in Fig. 4).Charged Coupled Device 132 is configured on circuit board 150 and is electrically connected with circuit board 150
Connect.The region of Charged Coupled Device 132 is the pixel region PR of image-pickup assembly 130.In another embodiment, image is picked
Component 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-pickup assembly 130
PR。
First collimator 140 is located between leaded light component 120 and image-pickup assembly 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 group
On part 130, and first collimator 140 and image-pickup assembly 130 can be by bindiny mechanism or adhesion layers (for example：Optical cement) and
It is fixed together, but is not limited.
Fig. 3 is a kind of schematic diagram of the first collimator assembly of first collimator in Fig. 1, shows the front of the first collimator assembly
And the back side.Fig. 4 is the first diagrammatic cross-section of first collimator, image-pickup assembly and circuit board in Fig. 1.It refer to figure
1st, Fig. 3 and Fig. 4, first collimator 140 includes the first collimator assembly 142 and is overlapped in the second standard of the first collimator assembly 142
Straight component 144.
First collimator assembly 142 includes the first light-transmitting component 1421, the first light-absorption layer 1422 and multiple lens subassemblies
1423.The material of first light-transmitting component 1421 can for glass, makrolon (PC), polymethyl methacrylate (PMMA) or other
Suitable material.First light-absorption layer 1422, which is configured on the first light-transmitting component 1421 and had, is overlapped in multiple the first of pixel region PR
Be open O1.Lens subassembly 1423 is configured on the first light-transmitting component 1421 and is located in one of respectively in the first opening O1.The
Two collimator assemblies 144 include light absorbing element 1441.The opening of light absorbing element 1441 and first O1 is located at the first light-transmitting component respectively
1421 opposite side, and light absorbing element 1441 has the multiple second opening O2 for being overlapped in the first opening O1.
In the present embodiment, the first light-absorption layer 1422 is configured on the surface S1421A of the first light-transmitting component 1421.Extinction
Component 1441 is the second light-absorption layer.Second light-absorption layer (i.e. light absorbing element 1441) is located at the first light-transmitting component 1421 and image capture
Between component 130, and the second light-absorption layer example such as disposed in the first light-transmitting component 1421 towards the surface of image-pickup assembly 130
On S1421B, and the second opening O2 formation is in the second light-absorption layer.Wherein the one of first light-absorption layer 1422 and the second light-absorption layer
It is individual further to configure on the side wall S1421C of the first light-transmitting component 1421, to avoid being transmitted to the first light-transmitting component 1421
In light beam projected from side wall S1421C, but be not limited.In another embodiment, the first light-absorption layer 1422 and second
Light-absorption layer can not be configured on the side wall S1421C of the first light-transmitting component 1421.
The lens subassembly 1423 for being arranged at the incident side of first collimator 140 is acted on and led to through thing 10 to be identified suitable for convergence
The light beam B ' of leaded light component 120 is crossed, and helps to allow more light beams B ' that image-pickup assembly 130 can be transferred to.
The material of first light-absorption layer 1422 and the second light-absorption layer (i.e. light absorbing element 1441), which can for example be used, contains extinction
Material is (for example：Carbon) silica gel system, acryl system or photoresist, to absorb the light of the first light-transmitting component of large angle incidence 1421
Beam.Even if in addition, the light beam (such as the light beam B ' shown by Fig. 4) of the first light-transmitting component of large angle incidence 1421 is opened by first
Mouthful O1 and enter the first light-transmitting component 1421, still using being located between the first collimator assembly 142 and image-pickup assembly 130
Light absorbing element 1441 absorbs the incident beam of wide-angle, and only allow low-angle incident beam by and be transferred to image capture group
Part 130.First light-absorption layer 1422 and the second light-absorption layer can be using identical materials and by the production process charts case shape with along with
Into, but be not limited.In another embodiment, the first light-absorption layer 1422 and the second light-absorption layer can using different materials and
Formed in not people having a common goal's manufacture craft.
Whether the light beam into first collimator 140 is by the first light-absorption layer 1422 and the second light-absorption layer (i.e. light absorbing element
1441) the aperture WO1 that may depend on the first opening O1, the second opening O2 aperture WO2, the height of the first light-transmitting component 1421 are absorbed
H1 and light beam B ' is spent at the surface S1421A of the first light-transmitting component 1421 refraction angle (by light beam B ' incidence angle and first
The refractive index of light-transmitting component 1421 is determined) etc..In the case where the height H1 of the first light-transmitting component 1421 is definite value, the first opening
The openings of O1 aperture WO1 and second O2 aperture WO2 is bigger, the angle model for the light beam B ' that image-pickup assembly 130 is received
Enclose bigger.In the case where the first opening O1 openings of aperture WO1 and second O2 aperture WO2 is definite value, the first printing opacity group
The height H1 of part 1421 is bigger, and the angular range for the light beam B ' that image-pickup assembly 130 is received is smaller.The first opening O1's
In the case that aperture WO1, the second opening O2 aperture WO2 and the first light-transmitting component 1421 height H1 are definite value, light beam B '
Refraction angle it is bigger (namely incidence angle is bigger), be more possible to by the first light-absorption layer 1422 and the second light-absorption layer (i.e. extinction
Component 1441) absorb.In the present embodiment, the refractive index of the first light-transmitting component 1421 is more than 1, and for example falls 1.3 to 1.7
In the range of.Each first opening O1 aperture WO1 and the height H1 ratios of the first light-transmitting component 1421 fall in the range of 2 to 20.Respectively
Second opening O2 aperture WO2 and the height H1 ratios of the first light-transmitting component 1421 fall in the range of 2 to 20.However, first is saturating
The refractive index of optical assembly 1421, each first opening O1 aperture WO1 and the height H1 ratios of the first light-transmitting component 1421 and each the
Two opening O2 aperture WO2 can be according to different design requirements (for example from the height H1 ratios of the first light-transmitting component 1421：Image is picked
Take the pitch (pitch) of component 130) change, and be not limited to above-mentioned.
Absorbed and acted on through thing 10 to be identified using the first light-absorption layer 1422 and the second light-absorption layer (i.e. light absorbing element 1441)
And by the wide-angle light beam of leaded light component 120, can be transferred to the light beam (the incident light beam of low-angle) of only special angle
Image-pickup assembly 130., can be with via the appropriate opening of the modulation first O1 openings of aperture WO1 and second O2 aperture WO2
Enable by the light beam of first collimator 140 with 0 degree or close to 0 degree of the incident image-pickup assembly 130 of angle.In other words
Say, first collimator 140 helps to will be transmitted to the beam collimation of image-pickup assembly 130.Filtered out in this way, not only helping
Veiling glare, additionally aid avoid from difference second be open O2 output light beam interfere the problem of, make image-pickup assembly 130
Capture increased quality.Therefore, biometric recognition device.It 100 can have good identification capability.
In the present embodiment, the first opening O1 openings of aperture WO1 and second O2 aperture WO2 can be identical, and first
The openings of opening O1 and second O2 is aligned in pixel region PR, so as to sequentially pass through the first opening O1 and the second opening O2 light beam energy
Enough it is transferred to image-pickup assembly 130.First opening O1 and the second opening O2 shape are, for example, circular, but not as
Limit.In other embodiments, the first opening O1 and the second opening O2 shape can also be triangle, quadrangle, pentagon
Or other polygons.In addition, pixel region PR size may be slightly larger than the first opening O1 openings of aperture WO1 and second O2 hole
Footpath WO2, but be not limited.
According to different demands, biometric recognition device.It 100 may also include other assemblies.For example, biological characteristic is distinguished
Identification device 100 may also include the second collimater 170.Second collimater 170 be located at leaded light component 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 leaded light component 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 (or first collimator 140A), in advance
By light beam B ' collimationizations, with the converging beam B ' angle of divergence.In this way, can increase light beam B ' subsequently through first collimator 140 (or
First collimator 140A) probability.Fig. 5 is leaded light component and a kind of enlarged drawing of the second collimater in Fig. 1.It refer to Fig. 1
And Fig. 5, the second collimater 170 may include multiple prisms 172, and the drift angle TA of prism 172 is respectively directed to leaded light component 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 foundations
Different demands changes, 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 leaded light component 120A side.Under this framework, leaded light component 120A is, for example, tabular, and leaded light component 120A can
To omit the light in part 124 of leaded light component 120 in Fig. 1.
Fig. 7 to Fig. 9 is respectively second to of first collimator in Fig. 1 and Fig. 6, image-pickup assembly and circuit board
Four kinds of diagrammatic cross-sections.Figure 10 is a kind of elevational schematic view of the first collimator assembly of first collimator in Fig. 9.
Fig. 7 first collimator 140A and Fig. 4 first collimator 140 are similar, and first collimator 140A has and the
Collimator 140 similar effect and advantage, are just no longer repeated in this.Fig. 7 first collimator 140A and Fig. 4 the first collimation
The difference of device 140 is as described below.In Fig. 4, the second opening O2 aperture WO2 is equal to the first opening O1 aperture WO1.In Fig. 7
In, the second opening O2 aperture WO2 is less than the first opening O1 aperture WO1.
By the hole for the second opening O2 for reducing the second light-absorption layer (i.e. the second collimator assembly 144A light absorbing element 1441)
Footpath WO2, contributes to the light beam for filtering out more veiling glares or large angle incidence first collimator 140A, and then lift biological characteristic
The identification capability of device for identifying.
Fig. 8 first collimator 140B and Fig. 4 first collimator 140 are similar, and first collimator 140B has and the
Collimator 140 similar effect and advantage, are just no longer repeated in this.Fig. 8 first collimator 140B and Fig. 4 the first collimation
The difference of device 140 is as described below.In fig. 8, the second collimator assembly 144B also includes the second light-transmitting component 1442 and the 3rd suction
Photosphere 1443.Second light-transmitting component 1442 is located at the second light-absorption layer (i.e. light absorbing element 1441) between image-pickup assembly 130.
In addition, the 3rd light-absorption layer 1443 and the second light-absorption layer are located at the opposite side of the second light-transmitting component 1442 respectively.
In the present embodiment, the first light-absorption layer 1422 and the second light-absorption layer (i.e. light absorbing element 1441) are arranged respectively at first
On the relative surface S1421A and surface S1421B of light-transmitting component 1421, and the 3rd light-absorption layer 1443 is configured in the second printing opacity group
Part 1442 is towards on the surface S1442A of image-pickup assembly 130.Second light-transmitting component 1442 by bindiny mechanism or can stick together
Layer is (for example：Optical cement) and it is fixed on the first light-transmitting component 1421 is formed with the second light-absorption layer (i.e. light absorbing element 1441) one
Side, but be not limited.In another embodiment, the second light-absorption layer (i.e. light absorbing element 1441) can be 1443 points with the 3rd light-absorption layer
It is positioned respectively on the relative surface S1442B of the second light-transmitting component 1442 and surface S1442A, and the first light-transmitting component 1421 can
By bindiny mechanism or adhesion layer (for example：Optical cement) and be fixed on the second light-transmitting component 1442 and be formed with the one of the second light-absorption layer
Side.In another embodiment, the second light-absorption layer can be previously formed in the 3rd light-transmitting component (not shown), and the 3rd light-transmitting component
It can be fixed on by bindiny mechanism or adhesion layer between the first light-transmitting component 1421 and the second light-transmitting component 1442.Another real
Apply in example, the 3rd light-absorption layer 1443 can be configured further on the side wall S1442C of the second light-transmitting component 1442, but not with this
It is limited.
3rd light-absorption layer 1443 has the multiple 3rd opening O3 for being overlapped in the second opening O2.First opening O1 aperture
WO1 can be more than or equal to the second opening O2 aperture WO2, and the second opening O2 aperture WO2 can be more than or equal to the 3rd opening
O3 aperture WO3.In the present embodiment, the first opening O1 aperture WO1, the second opening O2 openings of aperture WO2 and the 3rd
O3 aperture WO3 is identical.Furthermore, the first opening O1, the second opening O2 and the 3rd opening O3 have identical or substantive
Upper identical shape and size.So-called substantially the same shape and size allow for the mistake caused by manufacture craft
Difference.First opening O1, second opening O2 and the 3rd opening O3 shape can be circle, triangle, quadrangle, pentagon or
Other polygons.In addition, the first opening O1, the second opening O2 and the 3rd opening O3 are aligned in pixel region PR, so as to sequentially lead to
Image-pickup assembly 130 can be transferred to by crossing the first opening O1, the second opening O2 and the 3rd opening O3 light beam.
The material of 3rd light-absorption layer 1443 can using it is same or similar in the first light-absorption layer 1422 and the second light-absorption layer (i.e.
Light absorbing element 1441) material, just no longer repeated in this.Second light-transmitting component 1442 and the 3rd light-absorption layer 1443 are provided with
Help the light beam for filtering out more veiling glares or large angle incidence first collimator 140B, and then lift biometric recognition device.It
Identification capability.
In the present embodiment, the refractive index of the second light-transmitting component 1442 is more than 1, and for example falls the scope 1.3 to 1.7
It is interior.Each 3rd opening O3 aperture WO3 and the height H2 ratios of the second light-transmitting component 1442 fall in the range of 2 to 20.However, the
The refractive index of two light-transmitting components 1442 and each 3rd opening O3 aperture WO3 and the second light-transmitting component 1442 height H2 ratios can
According to different design requirements (for example：The pitch (pitch) of image-pickup assembly 130) change, and be not limited to above-mentioned.
The first collimator 140 that refer to Fig. 9 and Figure 10, Fig. 9 first collimator 140C and Fig. 4 is similar, and first accurate
Straight device 140C has the effect and advantage similar to first collimator 140.In addition, Fig. 9 the first collimator assembly 142C vertical view
Figure can refer to Fig. 3 and the corresponding paragraph of specification, just no longer be repeated in this.The first of Fig. 9 first collimator 140C and Fig. 4 is accurate
The difference of straight device 140 is as described below.The first collimator assembly 142 compared to Fig. 4, the first of Fig. 9 the first collimator assembly 142C
Light-absorption layer 1422 is configured on the side wall S1421C of the first light-transmitting component 1421 and further extended on the S1421B of surface, with
Local complexity surface S1421B, but be not limited.In another embodiment, the first light-absorption layer 1422 can not be configured first
On the surface S1421B and side wall S1421C of light-transmitting component 1421.
In addition, the second collimator assembly 144 compared to Fig. 4, Fig. 9 the second collimator assembly 144C is also saturating including multiple second
Optical assembly 1442.Second light-transmitting component 1442 is configured in the second opening O2.Specifically, the second light-transmitting component 1442 is arranged at intervals
And it is overlapped in the first opening O1.Light absorbing element 1441 is around the side of the second light-transmitting component 1442 and the second light-transmitting component 1442 of cladding
Wall.Second light-transmitting component 1442 is for example tightly engaged into light absorbing element 1441, and the second light-transmitting component 1442 and light absorbing element
Without the air gap between 1441.That is, the width W1442 of the second light-transmitting component 1442 is respectively equal to the second opening O2 hole
Footpath WO2.
Second collimator assembly 144C can be fixed on the first collimator assembly 142C by bindiny mechanism or adhesion layer.When first
Light Transfer Medium between collimator assembly 142C and the second collimator assembly 144C is (for example：Air or optical cement) refractive index it is different
When the refractive index of the second light-transmitting component 1442, the light beam B ' of incident second light-transmitting component 1442 can be in the second light-transmitting component 1442
Upper surface S1442 via refraction enter the second light-transmitting component 1442.Therefore, the setting of the second light-transmitting component 1442 contributes to
Converging beam B ' enters the angle of the second light-transmitting component 1442, and then allows more light beam B ' to be transferred to image-pickup assembly
130.For example, the material of the second light-transmitting component 1442 can use silica gel system or acryl system light transmissive material.
Into the second collimator assembly 144C light beam whether by light absorbing element 1441 absorb may depend on the second opening O2's
The folding of aperture WO2, the height H2 of the second light-transmitting component 1442 and light beam B ' in the upper surface S1442 of the second light-transmitting component 1442
Firing angle (being determined by light beam B ' incidence angle and the refractive index of the second light-transmitting component 1442) etc..In the second light-transmitting component 1442
In the case that height H2 is definite value, the second opening O2 aperture WO2 is bigger, the light beam B's ' that image-pickup assembly 130 is received
Angular range is bigger.In the case where the second opening O2 aperture WO2 is definite value, the height H2 of the second light-transmitting component 1442 is got over
Greatly, the angular range for the light beam B ' that image-pickup assembly 130 is received is smaller.In the second opening O2 aperture WO2 and second
In the case that the height H2 of light-transmitting component 1442 is definite value, light beam B ' refraction angle is bigger (namely incidence angle is bigger), more has
It may be absorbed by light absorbing element 1441.In the present embodiment, the refractive index of the second light-transmitting component 1442 is respectively greater than 1, and for example
Respectively fall in the range of 1.3 to 1.7, and each second opening O2 aperture WO2 and the height H2 ratios of the second light-transmitting component 1442
Fall in the range of 2 to 20.However, the refractive index of the second light-transmitting component 1442 and each second opening O2 aperture WO2 and the
The height H2 ratios of two light-transmitting components 1442 can be according to different design requirements (for example：The pitch of image-pickup assembly 130
(pitch)) change, and be not limited to above-mentioned.
Absorbed and acted on and by leaded light component through thing 10 to be identified using the first light-absorption layer 1422 and light absorbing element 1441
120 wide-angle light beam is (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-pickup assembly 130.It is open O2's via the appropriate opening of modulation first O1 aperture WO1 and second
Aperture WO2, can make can be with 0 degree or close to 0 degree of the incident image capture group of angle by the light beam B ' of first collimator 140
Part 130.In other words, first collimator 140 helps to will be transmitted to the beam collimation of image-pickup assembly 130.In this way, not
But help to filter out veiling glare, additionally aid avoid from different openings export light beam B ' interfere the problem of, pick image
Take the capture increased quality of component 130.Therefore, biometric recognition device.It 100 can have good identification capability.
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 leaded light component to absorb through thing to be identified, is picked with will be transmitted to image
The beam collimation of component is taken, makes the capture increased quality of image-pickup assembly.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；
Leaded light component, on the bang path of the light beam；
Image-pickup assembly, below the leaded light component and with multiple pixel regions；And
First collimator, between the leaded light component and the image-pickup assembly, wherein the first collimator includes：
First collimator assembly, including the first light-transmitting component, the first light-absorption layer and multiple lens subassemblies, first light-absorption layer are matched somebody with somebody
Put on first light-transmitting component and with multiple first openings for being overlapped in the multiple pixel region, the multiple lens group
Part configuration is on first light-transmitting component and is located in one of respectively in the first opening；And
Second collimator assembly, including light absorbing element, wherein the light absorbing element is open respectively positioned at described with the multiple first
The opposite side of first light-transmitting component, and the light absorbing element has multiple second openings for being overlapped in the multiple first opening.
2. biometric recognition device.It according to claim 1, it is characterised in that the leaded light component 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-pickup assembly,
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 leaded light component 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.
4. 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 first light-transmitting component in the range of 2 to 20.
5. biometric recognition device.It according to claim 1, it is characterised in that the light absorbing element is the second extinction
Layer, second light-absorption layer is located between first light-transmitting component and the image-pickup assembly, and the multiple second opens
Mouth is formed in second light-absorption layer, and the aperture of each the multiple second opening and the height ratio of first light-transmitting component fall
In the range of 2 to 20.
6. biometric recognition device.It according to claim 5, it is characterised in that the aperture of the multiple second opening is small
In or equal to the multiple first aperture being open.
7. biometric recognition device.It according to claim 5, it is characterised in that second collimator assembly also includes the
Two light-transmitting components and the 3rd light-absorption layer, second light-transmitting component are located at second light-absorption layer and the image-pickup assembly
Between, and the 3rd light-absorption layer and second light-absorption layer are located at the opposite side of second light-transmitting component respectively, described the
Three light-absorption layers have multiple 3rd openings for being overlapped in the multiple second opening.
8. biometric recognition device.It according to claim 7, it is characterised in that the aperture of the multiple first opening is big
In or equal to it is the multiple second opening aperture, and it is the multiple second opening aperture be more than or equal to the multiple 3rd
The aperture of opening.
9. biometric recognition device.It according to claim 1, it is characterised in that second collimator assembly also includes many
Individual second light-transmitting component, the multiple second light-transmitting component configuration is in the multiple second is open, wherein the multiple second
The refractive index of light-transmitting component is respectively fallen in the range of 1.3 to 1.7, and the aperture and described second of each the multiple second opening
The height of translucent element is than falling the scope Inner 2 to 20.
10. biometric recognition device.It according to claim 1, it is characterised in that also include：
Second collimater, between the leaded light component and the first collimator, second collimater includes multiple ribs
Mirror, and the drift angle of the multiple prism is respectively directed to the leaded light component.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425433.2U CN206470775U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
| TW106201213U TWM553019U (en) | 2016-12-23 | 2017-01-24 | Biological feature identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425433.2U CN206470775U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
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| Publication Number | Publication Date |
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| CN206470775U true CN206470775U (en) | 2017-09-05 |
Family
ID=59711183
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621425433.2U Expired - Fee Related CN206470775U (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
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| TW (1) | TWM553019U (en) |
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| CN109635794A (en) * | 2017-10-05 | 2019-04-16 | 印芯科技股份有限公司 | Optical recognition module |
| CN110062931A (en) * | 2019-03-12 | 2019-07-26 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device, fingerprint identification method and electronic equipment |
| CN110096928A (en) * | 2018-01-30 | 2019-08-06 | 京东方科技集团股份有限公司 | Fingerprint identification device and display device |
| CN110473887A (en) * | 2018-08-21 | 2019-11-19 | 神盾股份有限公司 | Optical sensor, optical sensor system and its manufacturing method |
| CN111366997A (en) * | 2020-04-16 | 2020-07-03 | 欧菲微电子技术有限公司 | Micro-lens array, biological identification module and electronic equipment thereof |
| CN111832355A (en) * | 2019-04-19 | 2020-10-27 | 致伸科技股份有限公司 | Fingerprint identification module |
| US20220036029A1 (en) * | 2020-07-30 | 2022-02-03 | Largan Precision Co., Ltd. | Optical fingerprint identification system and optical fingerprint identification device |
| TWI765170B (en) * | 2018-08-21 | 2022-05-21 | 神盾股份有限公司 | Optical sensor, optical sensing system and method for manufacturing the same |
| TWI768287B (en) * | 2020-02-05 | 2022-06-21 | 世界先進積體電路股份有限公司 | Optical sensor device and method for forming the same |
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| CN108241834A (en) * | 2016-12-23 | 2018-07-03 | 创智能科技股份有限公司 | Biometric recognition device.It |
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| TWI705386B (en) * | 2019-04-19 | 2020-09-21 | 致伸科技股份有限公司 | Fingerprint identifying module |
| TWI727550B (en) * | 2019-12-13 | 2021-05-11 | 大陸商廣州印芯半導體技術有限公司 | Optical identification module |
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2016
- 2016-12-23 CN CN201621425433.2U patent/CN206470775U/en not_active Expired - Fee Related
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2017
- 2017-01-24 TW TW106201213U patent/TWM553019U/en unknown
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| CN109635794A (en) * | 2017-10-05 | 2019-04-16 | 印芯科技股份有限公司 | Optical recognition module |
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| CN110473887A (en) * | 2018-08-21 | 2019-11-19 | 神盾股份有限公司 | Optical sensor, optical sensor system and its manufacturing method |
| TWI765170B (en) * | 2018-08-21 | 2022-05-21 | 神盾股份有限公司 | Optical sensor, optical sensing system and method for manufacturing the same |
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| CN111832355A (en) * | 2019-04-19 | 2020-10-27 | 致伸科技股份有限公司 | Fingerprint identification module |
| CN111832355B (en) * | 2019-04-19 | 2023-11-07 | 致伸科技股份有限公司 | Fingerprint identification module |
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| TWM553019U (en) | 2017-12-11 |
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