CN108241827A - Biological identification device - Google Patents
Biological identification device Download PDFInfo
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- CN108241827A CN108241827A CN201611207179.3A CN201611207179A CN108241827A CN 108241827 A CN108241827 A CN 108241827A CN 201611207179 A CN201611207179 A CN 201611207179A CN 108241827 A CN108241827 A CN 108241827A
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- light beam
- identification device
- biological identification
- leaded light
- component
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- 230000003287 optical effect Effects 0.000 claims abstract description 134
- 210000003462 vein Anatomy 0.000 claims description 4
- 239000004568 cement Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000011514 reflex Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 239000004425 Makrolon Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention provides a kind of biological identification device, including leaded light component, the first optical microstructures, the second optical microstructures, light source, image-pickup assembly and control optical assembly.Leaded light component has opposite first surface and second surface.First optical microstructures have the first reflecting surface.By the reflection of the first reflecting surface of the first optical microstructures, the first light beam that light source is sent out can be transmitted collimatedly, and then transmitted to image-pickup assembly with making the first beam collimation reflected by object to be identified to the first surface of leaded light component.Second optical microstructures have the second reflecting surface.The second light beam that light source is sent out is by the second reflective surface of the second optical microstructures, to be obliquely transferred to the first surface of leaded light component.Control optical assembly is reflexed to by object to be identified after the first surface that second light beam passes through leaded light component.Control optical assembly refraction with reflection the second light beam so that the second beam collimation to image-pickup assembly transmit.Thereby, the capture increased quality of biological identification device.
Description
Technical field
The present invention relates to a kind of biological identification devices.
Background technology
The type of biological identification includes face, sound, iris, retina, vein and identification of fingerprint etc..Due to everyone
Fingerprint is all unique, and fingerprint is not easy to change with age or physical condition, therefore fingeprint distinguisher is
As a kind of current most popular biological identification device.According to the difference of sensing mode, fingeprint distinguisher can be divided into optical profile type
With condenser type.Capacitance type fingerprint device for identifying be assembled in electronic product (such as：Mobile phone, tablet computer) when, capacitance type fingerprint
Protection component (cover lens) is equipped with above device for identifying more, and the sensing effect of capacitance type fingerprint device for identifying can be protected
The influence of protecting assembly.Therefore, optical fingerprint device for identifying is also by attention.
Optical fingerprint device for identifying includes light source, image-pickup assembly and light-transmitting component.Light source to send out light beam, with
Irradiation is pressed on the finger on light-transmitting component.The fingerprint of finger is made of a plurality of irregular burr with dimpled grain.By burr
It can be formed as the fingermark image of light and shade staggeredly on the receiving plane of image-pickup assembly with the light beam of dimpled grain reflection.Image capture group
Fingermark image can be converted to corresponding image information by part, and image information is input to processing unit.Processing unit is available
Algorithm calculates the image information corresponding to fingerprint, to carry out the identity identification of user.However, during above-mentioned capture, quilt
The light beam of fingerprint reflection is easily dispersedly transferred to image-pickup assembly, and causes capture quality bad, influences identification result.
Invention content
The present invention provides a kind of biological identification device.
According to an embodiment of the invention, biological identification device includes leaded light component, multiple first optical microstructures, Duo Ge
Two optical microstructures, light source, image-pickup assembly and control optical assembly.Leaded light component has opposite first surface and the second table
Face.Multiple first optical microstructures are formed in the second surface of leaded light component.Every one first optical microstructures have at least 1 the
One reflecting surface.Multiple second optical microstructures are formed in the second surface of leaded light component.Every one second optical microstructures have the
Two reflectings surface.Light source is sending out the first light beam and the second light beam.Image-pickup assembly relative to leaded light component second surface
Setting.Control optical assembly is configured between multiple second optical microstructures and image-pickup assembly.First light beam is by every one first light
At least one first reflective surface of micro-structure is learned, collimatedly to be transmitted to the first surface of leaded light component.Second light beam is every
Second reflective surface of one second optical microstructures, obliquely to transmit and by the first surface of leaded light component to be identified
Object.Second light beam reflexes to control optical assembly by object to be identified.Optical assembly refraction and the second light beam of reflection are controlled, so that the second light beam is accurate
Directly transmitted to image-pickup assembly.
In biological identification device according to an embodiment of the invention, at least one first reflecting surface includes two first reflections
Face, two the first reflectings surface relative to leaded light component first surface tilt, and two the first reflectings surface inclined direction on the contrary,
Wherein the first light beam is sequentially by two the first reflective surfaces of each optical microstructures, with collimatedly to the first of leaded light component
It transmits on surface.
In biological identification device according to an embodiment of the invention, at least the first reflecting surface includes curved surface, wherein first
Light beam is reflected at the difference two of curved surface, collimatedly to be transmitted to the first surface of leaded light component.
In biological identification device according to an embodiment of the invention, after the first surface that the first light beam passes through leaded light component
It is reflected by object to be identified, and the first light beam that image-pickup assembly reception is reflected by object to be identified, to obtain the shadow of object to be identified
Picture.
In biological identification device according to an embodiment of the invention, the second reflecting surface relative to leaded light component the first table
Face tilts.
In biological identification device according to an embodiment of the invention, the second reflecting surface is curved surface.
In biological identification device according to an embodiment of the invention, control optical assembly includes multiple microprisms.Each micro- rib
Mirror has bottom surface and multiple sides.Multiple sides tilt, and the inclination side of multiple sides relative to the first surface of leaded light component
To opposite.Bottom surface is connected between multiple sides.It is sequentially rolled over by the second light beam that object to be identified reflects by one of multiple sides
It penetrates, be emitted by another reflection of multiple sides by bottom surface.
In biological identification device according to an embodiment of the invention, image-pickup assembly has light receiving surface, by micro- rib
Second light beam of the bottom surface outgoing of mirror accompanies angle, θ with the reference axis perpendicular to light receiving surface, and -15 °≤θ≤15 °.
In biological identification device according to an embodiment of the invention, biological identification device further includes light-transmitting component.Light transmission
Component Configuration is on the first surface of leaded light component.Light-transmitting component has press surface, so that object to be identified presses.
In biological identification device according to an embodiment of the invention, biological identification device further includes collimator assembly.Collimation
Component Configuration is between the second surface and image-pickup assembly of leaded light component.
In biological identification device according to an embodiment of the invention, leaded light component also has lateral wall.Lateral wall and
One surface connects and extends to side where second surface.First light beam and the second light beam enter from lateral wall in leaded light component.
In biological identification device according to an embodiment of the invention, leaded light component also have lateral wall, madial wall and
Bottom surface.Lateral wall connect with first surface and extends to side where second surface.Madial wall connect and is set to second surface
The opposite direction of lateral wall.Bottom surface is set to the opposite direction of first surface and is connected between lateral wall and madial wall.First light beam and
Two light beams enter from the bottom surface of leaded light component in leaded light component.
In biological identification device according to an embodiment of the invention, the first light beam and the second light beam include visible ray, no
Visible ray or combination.
In biological identification device according to an embodiment of the invention, object to be identified includes fingerprint, vein, palmmprint or above-mentioned
At least combination.
Based on above-mentioned, the biological identification device of one embodiment of the invention include leaded light component, multiple first optical microstructures,
Multiple second optical microstructures, light source, image-pickup assembly and control optical assembly.By at least the one first of the first optical microstructures
The reflection of reflecting surface, the first light beam that light source is sent out can collimatedly transmit, and then make to be waited to distinguish to the first surface of leaded light component
It is transmitted to image-pickup assembly with knowing the first beam collimation of object reflection.Utilize the second reflecting surface of the second optical microstructures, light
The second light beam that source is sent out can be dispersed in larger range, so that biological identification device has sufficient work area.It is heavier
Strategic point is, using the refraction and reflex for controlling optical assembly, originally obliquely towards the second light beam of image-pickup assembly transmission
Direction of travel can be changed, and make the second light beam that can collimatedly be transmitted across after controlling optical assembly to image-pickup assembly.Thereby,
The capture increased quality of biological identification device, and then increase the identification capability of biological identification device.
Description of the drawings
Comprising attached drawing to further understand the present invention, and attached drawing is incorporated in this specification and forms one of this specification
Point.Illustrate the embodiment of the present invention, and principle for explaining the present invention together with the description.
Fig. 1 is the diagrammatic cross-section of the biological identification device of one embodiment of the invention；
The second light beam reflected Fig. 2 shows the control optical assembly of one embodiment of the invention and by object to be identified is in leaded light component
And it is transmitted in control optical assembly and the process of incident image-pickup assembly；
Fig. 3 is the diagrammatic cross-section of the biological identification device of another embodiment of the present invention；
Fig. 4 is the diagrammatic cross-section of the biological identification device of further embodiment of this invention；
Fig. 5 is the diagrammatic cross-section of the biological identification device of yet another embodiment of the invention.
Symbol description：
10：Object to be identified；
100、100A、100B、100C：Biological identification device；
110：Leaded light component；
112：First surface；
113：Groove；
114：Second surface；
116：Lateral wall；
118：Madial wall；
119：Bottom surface；
119a：Recess；
122、122C：First optical microstructures；
122a、122b：First reflecting surface；
122c、124c：Curved surface；
124、124C：Second optical microstructures；
124a：Second reflecting surface；
124b：Joint face；
130：Light source；
140：Image-pickup assembly；
142：Pixel region；
150：Control optical assembly；
152：Microprism；
152a：Bottom surface；
152b、152c：Side
160：Light-transmitting component；
162：Press surface；
170、192、194、198：Optical cement；
180：Collimator assembly；
184：Transparent area；
196：Circuit board；
199：Supporter；
L1：First light beam；
L2：Second light beam；
X：Reference axis；
α：Prism angle；
θ：The angle of emergence
θ’：Angle.
Specific embodiment
With detailed reference to the exemplary embodiment of the present invention, the example of exemplary embodiment is illustrated in attached drawing.Only
It is possible that 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 biological identification device of one embodiment of the invention.Please refer to Fig. 1, biological identification device
100 include leaded light component 110, multiple first optical microstructures 122, multiple second optical microstructures 124, light source 130 and image
Acquisition component 140.Leaded light component 110 has opposite first surface 112 and second surface 114.In the present embodiment, guide-lighting group
Part 110 also has lateral wall 116, madial wall 118 and bottom surface 119.Lateral wall 116 connect with first surface 112 and to the second table
114 place side of face extends.Madial wall 118 connect with second surface 114 and is set to 116 opposite direction of lateral wall.Bottom surface 119 is set to
It the opposite direction of first surface 112 and is connected between lateral wall 116 and madial wall 118.In the present embodiment, madial wall 118 and
Two surfaces 114 can define out groove 113, but the present invention is not limited.In the present embodiment, the material of leaded light component 110 can
For glass, makrolon (PC), polymethyl methacrylate (PMMA) or other suitable materials.
Multiple first optical microstructures 122 are formed in the second surface 114 of leaded light component 110.In the present embodiment, first
The material of optical microstructures 122 can be identical with the material of leaded light component 110.In other words, the first optical microstructures 122 and guide-lighting group
Part 110 can be integrally formed.However, the present invention is not limited thereto, and in other embodiments, the first optical microstructures 122 and leaded light
Component 110 can also make respectively, then, then the first optical microstructures 122 are configured to the second surface 114 of leaded light component 110
On.It is worth noting that, every one first optical microstructures 122 have at least one first reflecting surface 122a, 122b.For example,
In the present embodiment, every one first optical microstructures 122 have the first reflecting surface 122a and the second reflecting surface 122b.First reflection
Face 122a and the second reflecting surface 122b is tilted relative to the first surface 112 of leaded light component 110, and the first reflecting surface 122a and
The inclined direction of two reflecting surface 122b is opposite.In the present embodiment, the first reflecting surface 122a of same first optical microstructures 122
It can be directly connected to the second reflecting surface 122b, and the first optical microstructures 122 can be in V-shape protrusion.However, the present invention is not limited thereto,
In other embodiments, the first optical microstructures 122 also can be in other suitable shapes, and every one first optical microstructures 122
At least first reflecting surface 122a, 122b be not necessarily intended to by multiple planes (such as：Two first reflectings surface 122a, 122b) institute's group
Into.
Light source 130 is sending out light beam.The light beam includes the first light beam L1 and the second light beam L2.In the present embodiment,
First light beam L1 be, for example, black light (such as：Infrared light), and the second light beam L2 be, for example, visible ray (such as：Feux rouges, indigo plant
Light, green light or combination), however, the present invention is not limited thereto, in another embodiment, the first light beam L1 and the second light beam L2 also can be all
For black light；In another embodiment, the first light beam L1 and the second light beam L2 also can be all visible ray；In another embodiment
In, the first light beam L1 is alternatively visible ray, and the second light beam L2 is alternatively black light.First light beam L1 and the second light beam L2 can
Be simultaneously emitted by or send out in different time points (such as：It sends out in turn).In the present embodiment, light source 130 is, for example, light-emitting diodes
Pipe.However, the present invention is not limited thereto, in other embodiments, the luminescence component of light source 130 or other appropriate types.Fig. 1 shows
Go out a light source 130 for example, and light source 130 is arranged on the unilateral side of leaded light component 110.However, the present invention is not limited thereto, at other
In embodiment, the quantity of light source 130 is alternatively the bilateral or three that multiple and/or light source 130 may also be arranged on leaded light component 110
A above side.
In the present embodiment, the first light beam L1 and the second light beam L2 can enter guide-lighting group from the bottom surface of leaded light component 110 119
In part 110.In detail, biological identification device 100 can further comprise circuit board 196.Light source 130 is configured in circuit board 196
Above and with circuit board 196 it is electrically connected.The bottom surface 119 of leaded light component 110 can be fixed on circuit board 196.Leaded light component 110
Bottom surface 119 can have recess 119a.Light source 130 is optionally configured in the space that recess 119a is crossed with circuit board 196.
Light beam L can be from recess 119a incidences leaded light component 110.However, the present invention is not limited thereto, and in another embodiment, leaded light component
110 bottom surface 119 can not have recess 119a, and circuit board 196 can have recess (not shown), and light source 130 is configured in circuit board
In 196 recess, the bottom surface 119 of leaded light component 110 is configured above the recess of circuit board 196, and the first light beam
L1 and the second light beam L2 can also enter from the bottom surface 119 for not having recess 119a in leaded light component 110.It should be noted that above-mentioned light
The region of the position in source 130 and the first light beam L1 and the second light beam L2 incidences leaded light component 110 is only to illustrate this hair
Bright rather than to limit the present invention, in other embodiment, light source 130 can also be configured in other appropriate locations, the first light beam L1 with
Second light beam L2 also can be from other region incidence leaded light components 110 of leaded light component 110.
Image-pickup assembly 140 is set relative to the second surface 114 of leaded light component 110.In detail, in the present embodiment
In, image-pickup assembly 140 is configured on circuit board 196 and is electrically connected with circuit board 196.Furthermore, at this
In embodiment, the second surface 114 of leaded light component 110 and madial wall 118 can define out groove 113, and image-pickup assembly 140
It is configurable in the groove 113 of leaded light component 110, but the present invention is not limited.Image-pickup assembly 140 is arranged with array
Multiple pixels (pixel) area 142, to receive the first light beam L1 and the second light beam L2, Jin Erqu that are reflected by object 10 to be identified
Obtain the image of object 10 to be identified.In the present embodiment, image-pickup assembly 140 can be Charged Coupled Device (charge-
coupled device；CCD), complementary metal oxide semiconductor (complementary metal oxide
semiconductor；) or the imaging sensor array of other appropriate types CMOS.
In the present embodiment, biological identification device 100 further includes light-transmitting component 160.Light-transmitting component 160 is configured at guide-lighting group
On the first surface 112 of part 110.Light-transmitting component 160 has the press surface 162 backwards to leaded light component 110.Press surface 162 is for treating
Identification object 10 presses.In the present embodiment, under normal service condition, object 10 to be identified can be that the biology of the inside of biology is special
Sign (such as：Vein etc.), biology surface biological characteristic (such as：Fingerprint, palmmprint or above-mentioned at least combination etc.) or
The inside of biology and external biological characteristic.However, the present invention is not limited thereto, and under abnormal service condition, object to be identified
10 be also likely to be counterfeit, such as：Prosthetic finger.In the present embodiment, biological identification device 100 further includes optical cement 170.Light transmission
Component 160 can pass through optical cement 170 and be connect with the first surface 112 of leaded light component 110.In the present embodiment, light-transmitting component
160th, the refractive index of optical cement 170 and leaded light component 110 can be same or similar, is existed with reducing the first light beam L1 and the second light beam L2
Light-transmitting component 160 and the boundary of optical cement 170 and optical cement 170 and the reflection of the boundary of leaded light component 110, and then promote biology
The light utilization ratio of device for identifying 100 and/or capture quality.However, the present invention is not limited thereto, and in other embodiments, light transmission
The refractive index of component 160, optical cement 170 and leaded light component 110 also can be different.
Being worth noting is, in the present embodiment, after light source 130 sends out the first light beam L1, the first light beam L1 can be sequentially by
First reflecting surface 122a, 122b reflections of one optical microstructures 122, collimatedly to be passed to the first surface 112 of leaded light component 110
It passs.In other words, through the reflex of the first optical microstructures 122, the incidence angle of the first light beam L1 incidences first surface 112 can
For 0 degree or close to 0 degree (such as：In the range of -15 degree to+15 degree, if wherein by the normal of first surface 112 to the first light beam
The direction of L1 is clockwise, then the incidence angle is negative value；If by the normal of first surface 112 to the side of the first light beam L1
To for counterclockwise, then the incidence angle is positive value).Meeting after the first surface 112 that first light beam L1 passes through leaded light component 110
It is reflected by object 10 to be identified, wherein the reflection includes diffusing (diffuse reflection).First light beam L1 is to be identified
Object 10 can be by the press surface 162 of light-transmitting component 160 and across leaded light component 110, with incident image-pickup assembly after reflecting
140.Image-pickup assembly 140 can receive the first light beam L1 reflected by object 10 to be identified, to obtain the image of object 10 to be identified
(such as：The biological characteristic of the inside of object 10 to be identified).Particularly, the first reflecting surface of the first optical microstructures 122 is utilized
The reflection of 122a, 122b, the first light beam L1 can collimatedly incident identification objects 10, and then make to be identified the first light beam of the reflection of object 10
L1 is collimatedly transferred to image-pickup assembly 140.Thereby, the capture increased quality of biological identification device 100, and then increase biology
The identification capability of device for identifying 100.
Multiple second optical microstructures 124 are formed in the second surface 114 of leaded light component 110.In the present embodiment, second
The material of optical microstructures 124 can be identical with the material of leaded light component 110.In other words, the second optical microstructures 124 and guide-lighting group
Part 110 can be integrally formed.However, the present invention is not limited thereto, and in other embodiments, the second optical microstructures 124 and leaded light
Component 110 can also make respectively, then, then the second optical microstructures 124 are configured to the second surface 114 of leaded light component 110
On.It is worth noting that, every one second optical microstructures 124 have the second reflecting surface 124a.In the present embodiment, the second reflection
Face 124a can be the 112 inclined plane of first surface relative to leaded light component 110, but the present invention is not limited.More into one
Say that every one second optical microstructures 124 also have joint face 124b in step ground.Joint face 124b is connected to two neighboring second optics
Between two the second reflecting surface 124a of micro-structure 124.In the present embodiment, joint face 124b can be relative to leaded light component 110
First surface 112 tilt, and joint face 124b can be opposite with the inclined direction of the second reflecting surface 124a.However, the present invention is not
It is limited to this, in other embodiments, joint face 124b can be also configured as other appropriate patterns.
In the present embodiment, multiple first optical microstructures 122 and multiple second optical microstructures 124 can concentrate on respectively
Two different regions (such as：The left side and right side of the second surface 114 of leaded light component 110).However, the present invention is not limited to
This, in other embodiments, multiple first optical microstructures 122 can also intert each other with multiple second optical microstructures 124, and
It is dispersed in the same area.
Control optical assembly 150 is configured between multiple second optical microstructures 124 and image-pickup assembly 140.In this implementation
In example, control optical assembly 150 can not be configured between multiple first optical microstructures 122 and image-pickup assembly 140, but the present invention
It is not limited.In the present embodiment, biological identification device 100 further includes optical cement 192, and control optical assembly 150 is optionally
It is connect through optical cement 192 with the second optical microstructures 124.However, the present invention is not limited thereto, in other embodiments, light is controlled
The other modes that component 150 can also be used are fixed between multiple second optical microstructures 124 and image-pickup assembly 140.Citing
For, in another embodiment, control optical assembly 150 can also be used fixation kit (not shown) and be fixed on the interior of leaded light component 110
On side wall 118, and it is not necessarily intended to be placed directly against on the second optical microstructures 124.
Being worth noting is, after light source 130 sends out the second light beam L2, the second light beam L2 can be by the second optical microstructures 124
Second reflecting surface 124a reflects, obliquely to transmit and by the first surface 112 of leaded light component 110 to object 10 to be identified.The
Control optical assembly 150, wherein institute can be reflexed to after the first surface 112 that two light beam L2 pass through leaded light component 110 by object 10 to be identified
Reflection is stated to include diffusing (diffuse reflection).Particularly, control optical assembly 150 can reflect and reflect the second light beam L2,
So that the second light beam L2 is collimatedly transmitted to image-pickup assembly 140.Control optical assembly 150 is illustrated following with Fig. 2 to reflect
And the mechanism of the second light beam L2 of reflection.
Exist Fig. 2 shows the control optical assembly 150 of one embodiment of the invention and by the second light beam L2 that object 10 to be identified reflects
It is transmitted and the process of incident image-pickup assembly 140 in leaded light component 110 and control optical assembly 150.Fig. 1 and Fig. 2 is please referred to, controls light
Component 150 includes multiple microprisms 152.Each microprism 152 has bottom surface 152a and multiple side 152b, 152c.Multiple sides
Face 152b, 152c are tilted relative to the first surface 112 of leaded light component 110.The inclined direction phase of multiple side 152b, 152c
Instead.Bottom surface 152a is connected between multiple side 152b, 152c.The second light beam L2 that light source 130 is sent out is by the micro- knot of the second optics
After the second reflecting surface 124a reflections of structure 124 can obliquely incident object to be identified 10, the second light beam reflected by object 10 to be identified
L2 by after leaded light component 110 can obliquely incident control optical assembly 150 side 152b, the second light beam L2 is by microprism 152
Side 152b reflects and is transferred to the another side 152c of microprism 152, and the side 152c of microprism 152 reflects the second light beam
L2, so that the second light beam L2 is emitted from bottom surface 152a and is transmitted to image-pickup assembly 140.It is noted that utilize second
Second reflecting surface 124a of optical microstructures 124, the second light beam L2 that light source 130 is sent out can obliquely be transferred to leaded light component
110 first surface 112, and then obliquely incident press surface 162, to be dispersed in larger range.Due to the second light beam
L2 obliquely incident press surfaces 162, therefore control optical assembly is being entered by the second most light beam L2 that object 10 to be identified reflects
It can obliquely be transmitted before 150 towards image-pickup assembly 140.But utilize refraction and the reflex for controlling optical assembly 150, the second light beam
The direction of transfer of L2 can be changed, and the second light beam L2 across control optical assembly 150 after can be collimatedly to image-pickup assembly 140
It transmits.Thereby, biological identification device 100 can be with sufficient work area, (i.e. the second light beam L2 be dispersed on press surface
Range) under, good capture quality is had both, and then increase the identification capability of biological identification device 100.
Fig. 2 is please referred to, in the present embodiment, each microprism 152 of control optical assembly 150 has prism angle α.Prism angle α
Angle for side 152b and side 152c.Microprism 152 has refractive index n.In the present embodiment, in detail, image capture
There is component 140 light receiving surface 140a, reference axis X to pass through leaded light component 110 perpendicular to light receiving surface 140a, the second light beam L2
Afterwards and not enter before control optical assembly 150 with the angle of reference axis X be θ ', and the second light beam L2 is from the bottom surface 152a angles of emergence being emitted
θ (such as：From the angle of the second light beam L2 that bottom surface 152a is emitted and reference axis X).Output angle θ and angle theta ' meet following relationship
Formula：
Using above-mentioned relation formula, the size of prism angle α can be suitably designed, and then make that automatic control optical assembly 150 is emitted the
The output angle θ of two light beam L2 be controlled in certain range (such as：-15o≤θ≤15oIf the wherein method by bottom surface 152a
Line to the direction of the second light beam L2 for clockwise, then the incidence angle is negative value, if by the normal of bottom surface 152a to second
The direction of light beam L2 is counterclockwise, then the incidence angle is positive value).Thereby, the second light beam L2 can be picked collimatedly to image
Component 140 is taken to transmit, and then image-pickup assembly 140 is made to obtain good 10 image of object to be identified, improves biological identification device
100 identification capability.
In the present embodiment, biological identification device 100 may also include collimator assembly 180.Collimator assembly 180 is configured at leaded light
Between the second surface 114 of component 110 and image-pickup assembly 140.In detail, in the present embodiment, collimator assembly 180 can match
It is placed between multiple first optical microstructures 122 and image-pickup assembly 140 and multiple second optical microstructures 124 and image
Between acquisition component 140, but the present invention is not limited.For example, biological identification device 100 further includes optical cement 194, and
Collimator assembly 180 can pass through optical cement 194 and be connect with image-pickup assembly 140, but the present invention is not limited.It is noticeable
It is that collimator assembly 180 has multiple transparent areas 184.Multiple transparent areas 184 correspond to multiple pictures of image-pickup assembly 140 respectively
Plain area 142.It can be transferred to by the light beam L that the everywhere of object 10 to be identified is reflected by a corresponding transparent area 184 corresponding
Pixel region 142, and be not easy to be transferred to other pixel regions 142.Thereby, the capture quality of biological identification device 100 can be further
It is promoted.However, the present invention is not limited thereto, in other embodiments, biological identification device 100 also do not include collimation group optionally
Part 180.
Fig. 3 is the diagrammatic cross-section of the biological identification device of another embodiment of the present invention.The biological identification device 100A of Fig. 3
Similar with the biological identification device 100 of Fig. 1, the difference of the two is, 130 position of light source and the biology of biological identification device 100A
130 position of light source of device for identifying 100 is different.In detail, in the fig. 3 embodiment, light source 130 is configured in leaded light component
By 110 lateral wall 116, and the first light beam L1 and the second light beam L2 can enter from lateral wall 116 in leaded light component 110.Biology
Device for identifying 100A have the advantages that the effect of similar with biological identification device 100 and, just no longer repeated in this.
Fig. 4 is the diagrammatic cross-section of the biological identification device of further embodiment of this invention.The biological identification device 100B of Fig. 4
Similar with the biological identification device 100 of Fig. 1, the difference of the two is, the bottom surface of the leaded light component 110 of biological identification device 100B
119 can not directly be configured on circuit board 196.Biological identification device 100B further includes supporter 199.Supporter 199 can be the bottom of by
Face 119 extends to 130 place side of light source, to maintain the gap between bottom surface 119 and light source 130.In the present embodiment, supporter
199 can be integrally formed with leaded light component 110, circuit board 196 or light source 130 or for leaded light component 110, circuit board 196 and light source
Component other than 130.Biological identification device 100B may also include optical cement 198.Optical cement 198 inserts the bottom of leaded light component 110
Gap between face 119 and light source 130, to reduce the damage of the first light beam L1 and the second light beam L2 before incident leaded light component 110
It loses.Biological identification device 100B have the advantages that the effect of similar with biological identification device 100 and, just no longer repeated in this.
Fig. 5 is the diagrammatic cross-section of the biological identification device of yet another embodiment of the invention.The biological identification device 100C of Fig. 5
Similar with the biological identification device 100 of Fig. 1, the difference of the two is, the first optical microstructures of biological identification device 100C
The first optical microstructures 122 and the second optical microstructures of 122C and the second optical microstructures 124C and biological identification device 100
124 is different.In detail, in the 5 embodiment of figure 5, at least one first reflecting surface of every one first optical microstructures 122C can be song
Face 122c.First light beam L1 is reflected at the difference two of curved surface 122c, with collimatedly to the first surface 112 of leaded light component 110
It transmits, and then is reflected by object 10 to be identified.First light beam L1 can be by the pressing of light-transmitting component 160 after being reflected by object 10 to be identified
Face 162 simultaneously passes through leaded light component 110, with incident image-pickup assembly 140.Image-pickup assembly 140 receives the first light beam L1, with
Obtain the image of object 10 to be identified.In addition, in the 5 embodiment of figure 5, at least one reflection of every one second optical microstructures 124C
Face can be curved surface 124c.Second light beam L2 is reflected by curved surface 124c, with the first table for obliquely transmitting and passing through leaded light component 110
Face 112 is to object 10 to be identified.It by the press surface 162 of light-transmitting component 160 and is led by the second light beam L2 that object 10 to be identified reflects
Obliquely incident optical assembly 150 can be controlled after optical assembly 110.The refraction of optical assembly 150 and the second light beam L2 of reflection are controlled, so that the second light
Beam L2 is collimatedly transmitted to image-pickup assembly 140.Biological identification device 100C has the work(similar with biological identification device 100
Effect and advantage, are just no longer repeated in this.
In addition, it should be noted that, in the 5 embodiment of figure 5, biological identification device 100C is simultaneously including having curved surface 122c
The first optical microstructures 122C and with curved surface 124c the second optical microstructures 124C.However, the present invention is not limited thereto,
Include the life with the first optical microstructures 122C and Fig. 1, Fig. 3 of curved surface 122c or the second optical microstructures 124 of Fig. 4 simultaneously
Object device for identifying while the first optical microstructures 122 including Fig. 1, Fig. 3 or Fig. 4 and the second optics with curved surface 124c are micro-
The biological identification device of structure 124C is also in the scope of the invention to be protected.
In conclusion the biological identification device of one embodiment of the invention include leaded light component, multiple first optical microstructures,
Multiple second optical microstructures, light source, image-pickup assembly and control optical assembly.By at least the one first of the first optical microstructures
The reflection of reflecting surface, the first light beam that light source is sent out can collimatedly transmit, and then make to be waited to distinguish to the first surface of leaded light component
It is transmitted to image-pickup assembly with knowing the first beam collimation of object reflection.Utilize the second reflecting surface of the second optical microstructures, light
The second light beam that source is sent out can be dispersed in larger range, so that biological identification device has sufficient work area.It is heavier
Strategic point is, using the refraction and reflex for controlling optical assembly, originally obliquely towards the second light beam of image-pickup assembly transmission
Direction of travel can be changed, and make the second light beam that can collimatedly be transmitted across after controlling optical assembly to image-pickup assembly.Thereby,
The capture increased quality of biological identification device, and then increase the identification capability of biological identification device.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (14)
1. a kind of biological identification device, which is characterized in that including：
Leaded light component has opposite first surface and second surface；
Multiple first optical microstructures are formed in the second surface of the leaded light component, wherein the micro- knot of every one first optics
Structure has at least one first reflecting surface；
Multiple second optical microstructures are formed in the second surface of the leaded light component, wherein the micro- knot of every one second optics
Structure has the second reflecting surface；
Light source, to send out the first light beam and the second light beam；
Image-pickup assembly is set relative to the second surface of the leaded light component；And
Optical assembly is controlled, is configured between the multiple second optical microstructures and the image-pickup assembly, wherein described first
Light beam at least one first reflective surface described in every one first optical microstructures, with collimatedly to the leaded light component
The first surface transmit；Second light beam by second reflective surface of every one second optical microstructures,
Obliquely to transmit and by the first surface of the leaded light component to object to be identified, second light beam is by object to be identified
The control optical assembly, the control optical assembly refraction and reflection second light beam are reflexed to, so that second beam collimation
It is transmitted to the image-pickup assembly.
2. biological identification device according to claim 1, which is characterized in that at least one first reflecting surface includes two
First reflecting surface, described two first reflectings surface tilt, and described two relative to the first surface of the leaded light component
The inclined direction of first reflecting surface on the contrary, wherein described first light beam sequentially by described two the of each optical microstructures
One reflective surface, collimatedly to be transmitted to the first surface of the leaded light component.
3. biological identification device according to claim 1, which is characterized in that at least first reflecting surface includes curved surface,
Wherein described first light beam is reflected at the difference two of the curved surface, with collimatedly to the first surface of the leaded light component
It transmits.
4. biological identification device according to claim 1, which is characterized in that first light beam passes through the leaded light component
The first surface after reflected by the object to be identified, and the image-pickup assembly is received by the object reflection to be identified
First light beam, to obtain the image of the object to be identified.
5. biological identification device according to claim 1, which is characterized in that second reflecting surface is relative to the leaded light
The first surface of component tilts.
6. biological identification device according to claim 1, which is characterized in that second reflecting surface is curved surface.
7. biological identification device according to claim 1, which is characterized in that the control optical assembly includes：
Multiple microprisms, each microprism have bottom surface and multiple sides, and the multiple side is relative to the leaded light component
The first surface tilts, the inclined direction of the multiple side on the contrary, the bottom surface is connected between the multiple side,
Middle second light beam by the object reflection to be identified is sequentially by a refraction of the multiple side, by the multiple side
Another reflection and be emitted by the bottom surface.
8. biological identification device according to claim 7, which is characterized in that the image-pickup assembly has light-receiving
Face, second light beam being emitted by the bottom surface accompany angle, θ with the reference axis perpendicular to the light receiving surface, and -15 °≤
θ≤15°。
9. biological identification device according to claim 1, which is characterized in that the biological identification device further includes：
Light-transmitting component is configured on the first surface of the leaded light component, wherein the light-transmitting component has press surface, with
It is pressed for the object to be identified.
10. biological identification device according to claim 1, which is characterized in that the biological identification device further includes：
Collimator assembly is configured between the second surface of the leaded light component and the image-pickup assembly.
11. biological identification device according to claim 1, which is characterized in that the leaded light component also has：
Lateral wall connect with the first surface and extends to side where the second surface, wherein first light beam and institute
The second light beam is stated from the lateral wall to enter in the leaded light component.
12. biological identification device according to claim 1, which is characterized in that the leaded light component also has：
Lateral wall connect with the first surface and extends to side where the second surface；
Madial wall with the second surface connect and is set to the opposite direction of the lateral wall；And
Bottom surface is set to the opposite direction of the first surface and is connected between the lateral wall and the madial wall, wherein described
First light beam and second light beam enter from the bottom surface of the leaded light component in the leaded light component.
13. biological identification device according to claim 1, which is characterized in that first light beam and second light beam
Including visible ray, black light or combination.
14. biological identification device according to claim 1, which is characterized in that the object to be identified include fingerprint, vein,
Palmmprint or above-mentioned at least combination.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207179.3A CN108241827A (en) | 2016-12-23 | 2016-12-23 | Biological identification device |
| TW106102725A TWI647622B (en) | 2016-12-23 | 2017-01-24 | Biometric identification apparatus |
| PCT/CN2017/078388 WO2018113122A1 (en) | 2016-12-23 | 2017-03-28 | Biometric identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207179.3A CN108241827A (en) | 2016-12-23 | 2016-12-23 | Biological identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108241827A true CN108241827A (en) | 2018-07-03 |
Family
ID=62624249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611207179.3A Pending CN108241827A (en) | 2016-12-23 | 2016-12-23 | Biological identification device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108241827A (en) |
| TW (1) | TWI647622B (en) |
| WO (1) | WO2018113122A1 (en) |
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| CN111095287A (en) * | 2019-08-08 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Optical fingerprint device and electronic equipment |
| CN111108509A (en) * | 2019-08-08 | 2020-05-05 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and electronic equipment |
| US11531430B2 (en) | 2019-07-12 | 2022-12-20 | Shenzhen GOODIX Technology Co., Ltd. | Fingerprint detection apparatus and electronic device |
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Also Published As
| Publication number | Publication date |
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| TW201824065A (en) | 2018-07-01 |
| WO2018113122A1 (en) | 2018-06-28 |
| TWI647622B (en) | 2019-01-11 |
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Application publication date: 20180703 |