CN108241833A - Biometric recognition device.It - Google Patents
Biometric recognition device.It Download PDFInfo
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- CN108241833A CN108241833A CN201611208438.4A CN201611208438A CN108241833A CN 108241833 A CN108241833 A CN 108241833A CN 201611208438 A CN201611208438 A CN 201611208438A CN 108241833 A CN108241833 A CN 108241833A
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- biometric recognition
- guide device
- collimator
- recognition device
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- 210000003462 vein Anatomy 0.000 description 3
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Classifications
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- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
-
- 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
- G06V40/14—Vascular patterns
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Data Mining & Analysis (AREA)
- Evolutionary Biology (AREA)
- Evolutionary Computation (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Artificial Intelligence (AREA)
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- Multimedia (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 biometric recognition device.It, including light source, light-guide device, image capture element and first collimator.Light source is adapted to provide for light beam.Light-guide device is located on the transmission path of light beam.Image capture element is located at below light-guide device and with multiple pixel regions.First collimator is between light-guide device and image capture element, and wherein first collimator includes translucent element and light-absorption layer.Translucent element has first surface and second surface.Light-absorption layer is configured on first surface and second surface and is open with expose first surface multiple first and exposes multiple the second of second surface and is open.First opening and the second superposition of end gap are in pixel region, and the aperture of the second opening is less than the aperture of the first opening.Wide-angle light beam is absorbed using light-absorption layer, will be transmitted to the beam collimation of image capture element, makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good identification capability.
Description
Technical field
The present invention relates to a kind of biometric recognition device.Its.
Background technology
The type 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 not easy to change with age or physical condition, therefore fingerprint
Device for identifying has become 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 by putting.Capacitance type fingerprint device for identifying be assembled in electronic product (such as：Mobile phone, tablet computer)
When, capacitance type fingerprint device for identifying top is equipped with protection element (cover lens) more.In general, need additional processing (such as
Drilling or thinning) protection element, so that capacitance type fingerprint device for identifying can sense when the capacitance or electricity caused by finger touching
Field variation.
Compared to capacitance type fingerprint device for identifying, the acquisition of optical fingerprint device for identifying penetrate readily through the light of protection element into
Row identification of fingerprint, and additional processing protection element can not had to, thus and the combination of electronic product on it is more convenient.
Optical fingerprint device for identifying generally includes light source, image capture element and translucent element.Light source is sending out light
Beam, the finger being pressed on irradiation on translucent element.The fingerprint of finger is made of a plurality of irregular burr with dimpled grain.Quilt
Burr and the light beam of dimpled grain reflection can be formed as the fingermark image that light and shade is interlocked on the receiving plane of image capture element.Image is picked
It takes element that fingermark image can be converted to corresponding image information, and image information is input to processing unit.Processing unit can
The image information corresponding to fingerprint is calculated using algorithm, to carry out the identity identification of user.However, in above-mentioned capture
Cheng Zhong is easily dispersedly transferred to image capture element by the light beam that fingerprint reflects, and causes capture poor quality, influences identification knot
Fruit.
Invention content
The present invention provides a kind of biometric recognition device.It.
According to an embodiment of the invention, biometric recognition device.It include light source, light-guide device, image capture element and
First collimator.Light source is adapted to provide for light beam.Light-guide device is located on the transmission path of light beam.Image capture element is located at leaded light
Below element and with multiple pixel regions.First collimator is between light-guide device and image capture element, wherein first is accurate
Straight device includes translucent element and light-absorption layer.Translucent element has first surface and positioned at first surface and image capture element
Between second surface.Light-absorption layer configuration is on first surface and second surface and with exposing multiple the of first surface
One opening and multiple second openings for exposing second surface, wherein first is open with the second superposition of end gap in pixel region, and
The aperture of second opening is less than the aperture of the first opening.
In biometric recognition device.It according to an embodiment of the invention, light-guide device has light out part and is connected to
The light in part of light out part.Light source is co-located at image capture element below light out part.Light in part be located at light source and light out part it
Between.
In biometric recognition device.It according to an embodiment of the invention, light source is located at the side of light-guide device.
In biometric recognition device.It according to an embodiment of the invention, light-guide device is towards the surface of first collimator
It is formed with multiple micro-structures.Surface is protruded or be recessed in micro-structure.
In biometric recognition device.It according to an embodiment of the invention, the refractive index of translucent element is fallen 1.3 to 1.7
In the range of.
In the biometric recognition device.It according to an embodiment of the invention, the aperture of each first opening and translucent element
Highly ratio is fallen in the range of 2 to 20.
In the biometric recognition device.It according to an embodiment of the invention, the aperture of each second opening and translucent element
Highly ratio is fallen in the range of 2 to 20.
In biometric recognition device.It according to an embodiment of the invention, translucent element also have connection first surface with
The side wall surface of second surface, and light-absorption layer is also disposed in side wall surface.
In biometric recognition device.It according to an embodiment of the invention, biometric recognition device.It further includes cover board,
Wherein light-guide device is between cover board and first collimator.
In biometric recognition device.It according to an embodiment of the invention, biometric recognition device.It further includes the second standard
Straight device.Second collimator is between light-guide device and first collimator.Second collimator includes multiple prisms, and the top of prism
Angle is respectively directed to light-guide device.
Based on above-mentioned, in the biometric recognition device.It of the embodiment of the present invention, pass through the opening of modulation first and second
The aperture of opening acts on and by the wide-angle light beam of light-guide device to absorb through object to be identified, will be transmitted to image capture member
The beam collimation of part makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good
Identification capability.
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 biometric recognition device.It of one embodiment of the invention；
Fig. 2 is a kind of enlarged drawing of light-guide device in Fig. 1；
Fig. 3 A are a kind of schematic top plan view of first collimator in Fig. 1；
Fig. 3 B are a kind of elevational schematic view of first collimator in Fig. 1；
Fig. 4 is a kind of diagrammatic cross-section of first collimator, image capture element and circuit board in Fig. 1；
Fig. 5 is light-guide device and a kind of enlarged drawing of the second collimator in Fig. 1；
Fig. 6 is the diagrammatic cross-section of the biometric recognition device.It of another embodiment of the present invention.
Drawing reference numeral explanation：
10：Object to be identified；
100、100A：Biometric recognition device.It；
110：Light source；
112：Light-emitting component；
120、120A：Light-guide device；
122：Light out part；
124：Light in part；
130：Image capture element；
132：Charge coupled cell；
140：First collimator；
142：Translucent element；
144：Light-absorption layer；
150：Circuit board；
160：Cover board；
170：Second collimator；
172：Prism；
B、B’、B1’、B2’：Light beam；
BA：Base angle；
C：Recess；
H：Highly；
M：Micro-structure；
O1：First opening；
O2：Second opening；
PR：Pixel region；
S、S’：Surface；
S1：First reflecting surface；
S2：Second reflecting surface；
S1421：First surface；
S1422：Second surface；
S1423：Side wall surface；
TA：Apex angle；
WO1、WO2：Aperture.
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 similar elements symbol is used for representing same or similar part in the accompanying drawings and the description.
Fig. 1 is the diagrammatic cross-section of the biometric recognition device.It of one embodiment of the invention.Please refer to Fig. 1, biological characteristic
Device for identifying 100 is, for example, fingeprint distinguisher, and to recognize the fingerprint of object 10 to be identified, but not limited to this.In another reality
Apply in example, biometric recognition device.It 100 also can be used to identification vein, palmmprint or fingerprint, vein and palmmprint wherein extremely
Combination two few.
It is accurate that biometric recognition device.It 100 includes light source 110, light-guide device 120, image capture element 130 and first
Straight device 140.
Light source 110 is adapted to provide for light beam B.Light source 110 can be non-visible light sources or visible light source.That is,
Light beam B can be black light (such as：Infrared light) or visible ray (such as：Feux rouges, blue and green light or combination).Alternatively, light
Source 110 can be the combination of non-visible light sources and visible light source.For example, light source 110 may include a plurality of light-emitting elements
112.Light-emitting component 112 can be light-emitting diode or the light-emitting component of other appropriate types.Fig. 1 schematically shows that two shine
Element 112, and two light-emitting components 112 are in the opposite side of image capture element 130.However, the quantity of light-emitting component 112 with
And configuration mode can change on demand, and be not limited.
Light-guide device 120 is located on the transmission path of light beam B, and it is to be identified to be suitable for the light beam B for providing light source 110 guiding
Object 10.For example, the material of light-guide device 110 can be glass, makrolon (PC), polymethyl methacrylate (PMMA) or
Other suitable materials.In the present embodiment, light source 110 is located at the same side of light-guide device 120 with image capture element 130.It is raw
Object feature identification device 100 further comprises circuit board 150.Light source 110 be configured on circuit board 150 and with the electricity of circuit board 150
Connection.Light-guide device 120 has light out part 122 and is connected to an at least light in part 124 for light out part 122.Light source 110 and shadow
As capturing element 130 is co-located at 122 lower section of light out part, and light source 110 is located at by image capture element 130.Light in part 124
Between light source 110 and light out part 122.Specifically, light in part 124 can be fixed on circuit board 150, and light in part 124 has
There is recess C.Recess 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 recess (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 (be not shown, such as：Optical cement) it is fixed together.Again
In one embodiment, light in part 124 can by adhesion layer (be not shown, such as：Optical cement) and be fixed on light source 110, and enter light
Portion 124 can not be contacted with circuit board 150.Fig. 1 schematically shows two light in part 124, and two light in part 124 are in light extraction
The opposite side in portion 122.However, the quantity and configuration mode of light in part 124 can change on demand, and it is not limited.
Fig. 2 is a kind of enlarged drawing of light-guide device in Fig. 1.Fig. 1 and Fig. 2 is please referred to, the light beam B that light source 110 projects enters certainly
Light portion 124 enters light-guide device 120, and light beam B can be transferred to light out part 122 via light in part 124.Light-guide device 120 towards
The surface S of first collimator 140 can be selectively formed multiple micro-structure M (Fig. 1 is not shown, and please refers to Fig. 2).Micro-structure M
Suitable for changing the direction of transfer of light beam B so that vertically or close to ground direct projection of hanging down go out light out part by the light beam B of micro-structure M reflection
122.As shown in Fig. 2, micro-structure 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 inclined direction of the second reflecting surface S2.In one embodiment, micro-structure M, light out part 122 and enter
Light portion 124 can be integrally formed, and but not limited to this.In another embodiment, micro-structure M, light out part 122 and light in part 124
Can make respectively, then by bindiny mechanism or adhesion layer (such as：Optical cement) it is fixed together.Alternatively, micro-structure M also can be recessed
In surface S.Specifically, micro-structure M can be formed in the recess on the S of surface.In addition, the quantity of micro-structure M and its distribution can
Change according to different demands, and be not limited to the quantity shown by Fig. 2 and distribution.
The surface S ' of 122 output beam B of light out part is opposite with the surface S for being formed with micro-structure M.In one embodiment, table
Face S ' can be the press surface for object 10 to be identified pressing.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 '.
Alternatively, as shown in Figure 1, biometric recognition device.It 100 can further comprise cover board 160 for object 10 to be identified by
Pressure.Cover board 160 is located at 120 top of light-guide device, and light-guide device 120 is between cover board 160 and first collimator 140.Lid
Plate 160 can be the electronic product to be assembled (such as：Touch panel or touch-control display panel) protection element (cover
Lens), but not limited to this.In one embodiment, cover board 160 can be by bindiny mechanism or adhesion layer (example with light-guide device 120
Such as：Optical cement) and be fixed together, but not limited to this.In the case of cover board 160 and light-guide device 120 being fixed with adhesion layer,
The refractive index of adhesion layer, cover board 160 and light-guide device 120 can be same or similar, and to reduce interface reflection, and then it is special to promote biology
Levy the light utilization ratio of device for identifying 100 and/or capture quality.However, in other embodiments, adhesion layer, cover board 160 are with leading
The refractive index of optical element 120 also can be different.Under the framework of setting cover board 160, the light beam B from light source 110 is sequentially by entering
124 light out part 122 of light portion and cover board 160, and in cover board 160 for the surface experiences total internal reflection of object 10 to be identified pressing.Through
Object 10 to be identified act on (such as：Diffusion) light beam B ' sequentially by cover board 160 and light out part 122 and be transferred to surface S.It passes
Being handed to a part of the light beam B ' of surface S can be reflected by surface S, and again towards cover board 160 for the surface of object 10 to be identified pressing
It transmits.On the other hand, light-guide device 120 can be projected from surface S by being transferred to another part of the light beam B ' of surface S.
Image capture element 130 is located at 120 lower section of light-guide device and with the multiple pixel for example arranged in array
(pixel) area PR (being shown in Fig. 4) to receive the light beam B ' acted on through object 10 to be identified, and then obtains the shadow of object 10 to be identified
Picture.In the present embodiment, image capture element 130 is for example including multiple charge coupled cell (Charge-Coupled
Device, CCD) 132 (being shown in Fig. 4).Charge coupled cell 132 is configured on circuit board 150 and is electrically connected with circuit board 150
It connects.The region of charge coupled cell 132 is the pixel region PR of image capture element 130.In another embodiment, image
Capturing element 130 may include multiple complementary metal oxide semiconductors (Complementary Metal Oxide
Semiconductor, CMOS), and the pixel region that the region of complementary metal oxide semiconductor is image capture element 130
PR。
First collimator 140 is between light-guide device 120 and image capture element 130, and first collimator 140 is located at
On the transmission path of light beam B ' after the effect of object 10 to be identified.For example, first collimator 140 is configurable on image capture member
On part 130, and first collimator 140 and image capture element 130 can by bindiny mechanism or adhesion layer (such as：Optical cement) and
It is fixed together, but not limited to this.
Fig. 3 A are a kind of schematic top plan view of first collimator in Fig. 1.Fig. 3 B are that one kind of first collimator in Fig. 1 is looked up
Schematic diagram.Fig. 4 is a kind of diagrammatic cross-section of first collimator, image capture element and circuit board in Fig. 1.Please refer to Fig. 1,
Fig. 3 A to Fig. 4, first collimator 140 include translucent element 142 and light-absorption layer 144.Translucent element 142 has first surface
S1421, the second surface S1422 between first surface S1421 and image capture element 130 and connection first surface
The side wall surface S1423 of S1421 and second surface S1422.Light-absorption layer 144 is configured in first surface S1421 and second surface
S1422 is upper and has the multiple first opening O1 for exposing first surface S1421 and exposes the multiple of second surface S1422
Second opening O2, wherein first opening O1 with second opening O2 be overlapped in pixel region PR so that sequentially by first opening O1 and
The light beam of second opening O2 can be transferred to image capture element 130 (as shown in the light beam B2 ' of Fig. 4).In addition, the second opening
The aperture WO2 of O2 is less than the aperture WO1 of the first opening O1.
In the present embodiment, the size of pixel region PR may be slightly larger than the openings of aperture WO1 and second O2's of the first opening O1
Aperture WO2, but not limited to this.In addition, light-absorption layer 144 can be further configured on the side wall surface S1423 of translucent element 142,
It is projected to avoid the light beam being transmitted in translucent element 142 from side wall surface S1423.However, in another embodiment, light-absorption layer
144 can not be configured on the side wall surface S1423 of translucent element 142.
When between light-guide device 120 and first collimator 140 light transfer medium (such as：Air or optical cement) refraction
When rate is different from the refractive index of translucent element 142, the light beam B ' of incident translucent element 142 is (including large angle incidence translucent element
142 light beam B1 ' and the light beam B2 ' of low-angle incidence translucent element 142) it can be in the first surface S1421 of translucent element 142
Enter translucent element 142 via refraction.Therefore, the setting of translucent element 142 contributes to converging beam B ' into the first collimation
The angle of device 140, and then allow more light beam B ' that image capture element 130 can be transferred to.
The material of translucent element 142 can be used glass, makrolon (PC), polymethyl methacrylate (PMMA) or other
Suitable material.The material of light-absorption layer 144 for example can be used containing light absorbent (such as：Carbon) silica gel system or acryl system material
Material.Thus, even if the light beam B1 ' of large angle incidence translucent element 142 and the light beam of low-angle incidence translucent element 142
B2 ' all enters translucent element 142 by the first opening O1, is still inhaled using the light-absorption layer 144 on second surface S1422
Receive the light beam B1 ' of large angle incidence translucent element 142, and only allow low-angle incidence translucent element 142 light beam B2 ' by and pass
It is handed to image capture element 130.In the case of pixel region PR dense arrangements, it is less than by the aperture WO2 for making the second opening O2
The aperture WO1 of first opening O1, can increase the extinction area of the light-absorption layer 144 on second surface S1422, and then contribute to
Avoid the light beam of large angle incidence translucent element 142 by the second opening O2 (the second opening O2 of obliquely downward) of non-underface and
It is transferred to image capture element 130.
Whether the light beam into first collimator 140 by the light-absorption layer 144 on second surface S1422 is absorbed and can be depended on
The aperture WO2 of aperture WO1, the second opening O2 in the first opening O1, the height H and light beam B ' of translucent element 142 are in light transmission
The refraction angle (being determined by the incidence angle of light beam B ' and the refractive index of translucent element 142) of the first surface S1421 of element 142
Deng.In the case where the height H of translucent element 142 is definite value, the aperture of the openings of aperture WO1 and second O2 of the first opening O1
WO2 is bigger, and the angular range of light beam B ' that image capture element 130 receives is bigger.First opening O1 aperture WO1 and
The aperture WO2 of second opening O2 is in the case of definite value, the height H of translucent element 142 is bigger, and image capture element 130 receives
The angular range of light beam B ' arrived is smaller.Aperture WO1, the aperture WO2 of the second opening O2 and light transmission member in the first opening O1
In the case that the height H of part 142 is definite value, the refraction angle of light beam B ' is bigger (namely incidence angle is bigger), is more possible to be inhaled
Photosphere 144 absorbs.In the present embodiment, the refractive index of translucent element 142 is more than 1, and for example falls in the range of 1.3 to 1.7.
In addition, the aperture WO1 (and aperture WO2 of the second opening O2) and the height H ratios of translucent element 142 of each first opening O1 are fallen
In the range of 2 to 20.The aperture WO2 and the height H ratios of translucent element 142 of each second opening O2 is fallen in the range of 2 to 20.So
And the aperture WO1 of the refractive index of translucent element 142, the first opening O1 and the height H ratios of translucent element 142 and the second opening
The height H ratios of the aperture WO2 of O2 and translucent element 142 can according to different design requirement (such as：Image capture element 130
Pitch (pitch)) change, and be not limited to above-mentioned.
Absorbed using light-absorption layer 144 acted on through object 10 to be identified and by the wide-angle light beam of light-guide device 120 (such as：
Light beam B1 '), can make only special angle light beam (light beam of low-angle incidence, such as：Light beam B2 ') it is transferred to image capture
Element 130.Be open the aperture WO2 of the openings of aperture WO1 and second O2 of O1 via appropriate modulation first, can make by the
The light beam B ' of collimator 140 can be with 0 degree or close to 0 degree of angle incidence image capture element 130.In other words, first
Collimator 140 helps to will be transmitted to the beam collimation of image capture element 130.Stray light is filtered out in this way, not only helping,
It additionally aids and avoids the problem that the light beam B ' from difference the second opening O2 outputs is interfered with each other, and makes taking for image capture element 130
As quality-improving.Therefore, biometric recognition device.It 100 can have good identification capability.Fig. 3 A and Fig. 3 B are schematically shown
The shape for showing the openings of the first opening O1 and second O2 is circle, and but not limited to this.In other embodiments, the first opening O1
And second opening O2 shape can also be triangle, quadrangle, pentagon or other polygons.
According to different demands, biometric recognition device.It 100 may also include other elements.For example, biological characteristic is distinguished
Identification device 100 may also include the second collimator 170.Second collimator 170 be located at light-guide device 120 and first collimator 140 it
Between, and the second collimator 170 is located on the transmission path of the light beam B ' after object 10 to be identified effect.For example, the second collimation
Device 170 is configurable on the S of surface, and 120 and second collimator 170 of light-guide device can by bindiny mechanism or adhesion layer (such as：
Optical cement) and be fixed together, but not limited to this.
Second collimator 170 is suitable for before light beam B ' is by first collimator 140, in advance by light beam B ' collimationization, with
The angle of divergence of converging beam B '.In this way, probability of the light beam B ' subsequently through first collimator 140 can be increased.Fig. 5 is to be led in Fig. 1
A kind of enlarged drawing of optical element and the second collimator.Fig. 1 and Fig. 5 is please referred to, the second collimator 170 may include multiple prisms
172, and the apex angle TA of prism 172 is respectively directed to light-guide device 120.In the present embodiment, two base angle BA of each prism 172
Angle is identical.However, the apex angle TA and base angle BA of prism 172 can change according to different demands, and it is without being limited thereto.
Fig. 6 is the diagrammatic cross-section of the biometric recognition device.It of another embodiment of the present invention.The biological characteristic identification of Fig. 6
Device 100A is similar to the biometric recognition device.It 100 of Fig. 1, and biometric recognition device.It 100A have distinguished with biological characteristic
The effect of identification device 100 is similar and advantage are just no longer repeated in this.The biology of the biometric recognition device.It 100A and Fig. 1 of Fig. 6
The difference of feature identification device 100 is that the position of light source 110 is different.Specifically, in the embodiment in fig 6, light source 110
In the side of light-guide device 120A.Under this framework, light-guide device 120A is, for example, plate, and light-guide device 120A can be omitted
The light in part 124 of light-guide device 120 in Fig. 1.
In conclusion in the biometric recognition device.It of the embodiment of the present invention, pass through the opening of modulation first and second
The aperture of opening acts on and by the wide-angle light beam of light-guide device to absorb through object to be identified, will be transmitted to image capture member
The beam collimation of part makes the capture quality-improving of image capture element.Therefore, biometric recognition device.It can have good
Identification capability.
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 (10)
1. a kind of biometric recognition device.It, which is characterized in that including：
Light source is adapted to provide for light beam；
Light-guide device, on the transmission path of the light beam；
Image capture element, below the light-guide device and with multiple pixel regions；And
First collimator, between the light-guide device and the image capture element, wherein the first collimator includes：
Translucent element has first surface and the second table between the first surface and the image capture element
Face；And
Light-absorption layer is configured on the first surface and the second surface, and the light-absorption layer has and exposes described the
Multiple first openings on one surface and multiple second openings for exposing the second surface, wherein the multiple first opening
With the multiple second superposition of end gap in the pixel region, and the aperture of the multiple second opening is opened less than the multiple first
The aperture of mouth.
2. biometric recognition device.It according to claim 1, which is characterized in that the light-guide device have light out part with
And the light in part of the light out part is connected to, the light source is co-located at the image capture element below the light out part,
The light in part is between the light source and the light out part.
3. biometric recognition device.It according to claim 1, which is characterized in that the light source is located at the light-guide device
Side.
4. biometric recognition device.It according to claim 1, which is characterized in that the light-guide device is towards described first
The surface of collimator is formed with multiple micro-structures, and the surface is protruded or be recessed in the multiple micro-structure.
5. biometric recognition device.It according to claim 1, which is characterized in that the refractive index of the translucent element is fallen
In the range of 1.3 to 1.7.
6. biometric recognition device.It according to claim 1, which is characterized in that the aperture of each the multiple first opening
It is fallen in the range of 2 to 20 with the height ratio of the translucent element.
7. biometric recognition device.It according to claim 1, which is characterized in that the aperture of each the multiple second opening
It is fallen in the range of 2 to 20 with the height ratio of the translucent element.
8. biometric recognition device.It according to claim 1, which is characterized in that the translucent element also has connection institute
The side wall surface of first surface and the second surface is stated, and the light-absorption layer is also disposed in the side wall surface.
9. biometric recognition device.It according to claim 1, which is characterized in that further include：
Cover board, wherein the light-guide device is between the cover board and the first collimator.
10. biometric recognition device.It according to claim 1, which is characterized in that further include：
Second collimator, between the light-guide device and the first collimator, second collimator includes multiple ribs
Mirror, and the apex angle of the multiple prism is respectively directed to the light-guide device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208438.4A CN108241833A (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
| TW106102513A TWI648677B (en) | 2016-12-23 | 2017-01-24 | Biological feature identification device |
| PCT/CN2017/078360 WO2018113120A1 (en) | 2016-12-23 | 2017-03-28 | Biometric identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208438.4A CN108241833A (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108241833A true CN108241833A (en) | 2018-07-03 |
Family
ID=62624753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611208438.4A Pending CN108241833A (en) | 2016-12-23 | 2016-12-23 | Biometric recognition device.It |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108241833A (en) |
| TW (1) | TWI648677B (en) |
| WO (1) | WO2018113120A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842026A (en) * | 2011-06-24 | 2012-12-26 | 金佶科技股份有限公司 | Fingerprint identification device |
| CN103019474A (en) * | 2012-09-25 | 2013-04-03 | 友达光电股份有限公司 | Optical touch scanning device |
| CN103392137A (en) * | 2011-02-22 | 2013-11-13 | 皇家飞利浦有限公司 | Light collimator and lighting unit comprising such light collimator |
| CN105160334A (en) * | 2015-10-10 | 2015-12-16 | 江西合力泰科技有限公司 | Panel with multifunctional keys |
| CN105844212A (en) * | 2015-02-02 | 2016-08-10 | 辛纳普蒂克斯公司 | Optical sensor using collimator |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5726443A (en) * | 1996-01-18 | 1998-03-10 | Chapman Glenn H | Vision system and proximity detector |
| JP4081163B2 (en) * | 1997-10-16 | 2008-04-23 | 株式会社東海理化電機製作所 | 2D pattern recognition sensor |
| US6259108B1 (en) * | 1998-10-09 | 2001-07-10 | Kinetic Sciences Inc. | Fingerprint image optical input apparatus |
| TWI382349B (en) * | 2009-01-07 | 2013-01-11 | Gingy Technology Inc | Optical light guide module for optical fingerprint identification system |
| CN101814125A (en) * | 2009-02-25 | 2010-08-25 | 金佶科技有限公司 | Optical fingerprint identification system |
| TWI448973B (en) * | 2009-10-23 | 2014-08-11 | Gingy Technology Inc | A light guide module that improves image contrast |
| JP5950423B2 (en) * | 2011-04-07 | 2016-07-13 | ベックマン コールター， インコーポレイテッド | Identification and enumeration of early granulated cells (EGC) |
| US10732771B2 (en) * | 2014-11-12 | 2020-08-04 | Shenzhen GOODIX Technology Co., Ltd. | Fingerprint sensors having in-pixel optical sensors |
| CN104537349B (en) * | 2014-12-25 | 2018-11-27 | 上海箩箕技术有限公司 | Optical finger print imaging system and electronic product |
| TW201629521A (en) * | 2015-02-13 | 2016-08-16 | 聯詠科技股份有限公司 | Optical device |
| CN105550664A (en) * | 2016-01-08 | 2016-05-04 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
-
2016
- 2016-12-23 CN CN201611208438.4A patent/CN108241833A/en active Pending
-
2017
- 2017-01-24 TW TW106102513A patent/TWI648677B/en active
- 2017-03-28 WO PCT/CN2017/078360 patent/WO2018113120A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103392137A (en) * | 2011-02-22 | 2013-11-13 | 皇家飞利浦有限公司 | Light collimator and lighting unit comprising such light collimator |
| CN102842026A (en) * | 2011-06-24 | 2012-12-26 | 金佶科技股份有限公司 | Fingerprint identification device |
| CN103019474A (en) * | 2012-09-25 | 2013-04-03 | 友达光电股份有限公司 | Optical touch scanning device |
| CN105844212A (en) * | 2015-02-02 | 2016-08-10 | 辛纳普蒂克斯公司 | Optical sensor using collimator |
| CN105160334A (en) * | 2015-10-10 | 2015-12-16 | 江西合力泰科技有限公司 | Panel with multifunctional keys |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201824072A (en) | 2018-07-01 |
| WO2018113120A1 (en) | 2018-06-28 |
| TWI648677B (en) | 2019-01-21 |
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