CN108388868A - A kind of device of short distance sense object image - Google Patents
A kind of device of short distance sense object image Download PDFInfo
- Publication number
- CN108388868A CN108388868A CN201810162486.7A CN201810162486A CN108388868A CN 108388868 A CN108388868 A CN 108388868A CN 201810162486 A CN201810162486 A CN 201810162486A CN 108388868 A CN108388868 A CN 108388868A
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- illuminator
- imaging
- imaging body
- hole
- short distance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a kind of devices of short distance sense object image, including by sequentially connected object distance glass (1), black glue layer (2), black film layer (3), image distance glass (4) and imaging sensor (5) under；Multiple illuminators (6) and multiple imaging bodies (7) are spread in the black glue layer (2)；The illuminator (6) includes the illuminator through-hole (61) of upper and lower directions and the light emitting diode (62) set on illuminator through-hole (61) bottom；The imaging body through-hole (71) and the aperture (72) on the black film layer (3) of imaging body through-hole (71) lower central that the imaging body (7) includes upper and lower directions.It is imaged clear, discrimination is high, and size is thin, can apply in many environment.
Description
Technical field
The present invention relates to mechanical structure and optical technical field more particularly to a kind of dresses of short distance sense object image
It sets.
Background technology
Short distance sense object image such as fingerprint identification technology are frequent on current many electronic equipments such as mobile phone, attendance recorder
The technology used.Current technology, it is not high that there are discriminations, the problem of needing Multiple-Scan.
Invention content
The object of the present invention is to provide a kind of devices of short distance sense object image, and imaging is clear, and discrimination is high, size
It is thin, it can apply in many environment.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of device of short distance sense object image, including from top to bottom sequentially connected object distance glass 1, black glue layer 2,
Black film layer 3, image distance glass 4 and imaging sensor 5；
Multiple illuminators 6 and multiple imaging bodies 7 are spread in the black glue layer 2；
Illuminator through-hole 61 of the illuminator 6 including upper and lower directions and luminous two set on 61 bottom of illuminator through-hole
Pole pipe 62；
The imaging body through-hole 71 of the imaging body 7 including upper and lower directions be set to the black of 71 lower central of imaging body through-hole
Aperture 72 in film layer 3.
The imaging body 7 is arranged into an array, and the aperture 72 of adjacent imaging body 7, which is smaller than, to be equal to：
T：For 1 thickness of object distance glass；n：For 1 refractive index of object distance glass.
The illuminator 6 is arranged into an array, and adjacent 6 spacing of illuminator is identical at a distance from adjacent imaging body 7, respectively
Illuminator 6 is respectively arranged on nested arrangement between 7 array of imaging body, and illuminator 6 is set to the equidistant of 7 surrounding of imaging body.
The imaging body 7 is arranged at quadrate array with illuminator 6.
The imaging body 7 is with illuminator 6 at regular pentagon, regular hexagon or the arrangement of diamond shape array.
As seen from the above technical solution provided by the invention, a kind of short distance inductor provided in an embodiment of the present invention
The device of body image, imaging is clear, and discrimination is high, and size is thin, can apply in many environment.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the apparatus structure schematic diagram one of short distance sense object image provided in an embodiment of the present invention；
Fig. 2 is the apparatus structure schematic diagram two of short distance sense object image provided in an embodiment of the present invention；
Fig. 3 is the apparatus structure schematic diagram three of short distance sense object image provided in an embodiment of the present invention；
Fig. 4 is the apparatus structure schematic diagram four of short distance sense object image provided in an embodiment of the present invention；
Fig. 5 is the apparatus structure schematic diagram five of short distance sense object image provided in an embodiment of the present invention.
Specific implementation mode
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
As shown in Figures 1 to 5, a kind of device of short distance sense object image, which is characterized in that including from top to bottom according to
Object distance glass 1, black glue layer 2, black film layer 3, image distance glass 4 and the imaging sensor 5 of secondary connection；The thickness of object distance glass 1 adds
The thickness of black glue layer 2 is object distance；Black glue layer 2 is used to be isolated the channel of transmitting light and incident light；Black film layer 3 forms aperture 72, and
The light directive imaging sensor 5 directly down that light emitting diode 62 generates is shielded, and generates interference；Image distance glass 4, thickness determine
Image distance；Imaging sensor 5 receives the incident light of the aperture 72 formed by black film layer 3, and is imaged.
Multiple illuminators 6 and multiple imaging bodies 7 are spread in the black glue layer 2；In specific this example, the imaging body
7 is arranged into an array, as shown in Fig. 2, the aperture 72 of adjacent imaging body 7 is smaller than and is equal to：
T：For 1 thickness of object distance glass；n：For 1 refractive index of object distance glass.
The illuminator 6 is arranged into an array, and adjacent 6 spacing of illuminator is identical at a distance from adjacent imaging body 7,
Each illuminator 6 is respectively arranged on nested arrangement between 7 array of imaging body, and illuminator 6 is set to the equidistant of 7 surrounding of imaging body.In this example,
The imaging body 7 is arranged at quadrate array with illuminator 6.
In this example, the illuminator through-hole 61 of the illuminator 6 including upper and lower directions be set to 61 bottom of illuminator through-hole
Light emitting diode 62；Light emitting diode 62 provides light source.
In this example, the imaging body 7 includes the imaging body through-hole 71 of upper and lower directions and is set to below imaging body through-hole 71
Aperture 72 on the black film layer 3 at center.
Operation principle
As shown in figure 3, by taking fingerprint recognition as an example, light emitting diode 62 emits light, passes through；The transmitting light that black glue layer 2 is formed
Channel illuminator through-hole 61 shines outward；It is pressed in 1 surface of object distance glass, the light that light emitting diode 62 emits, irradiation when there is finger
To with 1 surface contact point A of object distance glass, formed reflection；The incident optical channel imaging body through-hole that reflected light is formed by black glue layer 2
71, then the aperture 72 through the formation of black film layer 3, the point A ' being irradiated on imaging sensor 5；Finger point A in this way, in imaging sensor
Point A ' is imaged on 5.
Imaging size and dimension of object ratio are equal to：4 thickness of image distance glass：1 thickness of object distance glass is thick plus black glue layer 2
Degree.
Imaging analysis
As shown in figs. 4 and 5,
1 refractive index of object distance glass is n, is air by the incident optical channel that black glue layer 2 is formed, when the incidence angle of incident light is big
When equal to arcsin (1/n), incident light forms total reflection in object distance glass 1, then incident light cannot shine incident optical channel
In, it cannot be imaged.Therefore, each aperture 72 can be imaged with pair radius for the object area of T*tan (arcsin (1/n)).Such as
The refractive index of object distance glass 1 is 1.5009, and the thickness of object distance glass 1 is 500um, and each aperture 72 can be with the radius of imaging region
For 500*tan (arcsin (1/1.5009))=446.7 (um).
Obviously, the finger-print region that the generally recognized fingerprint needs is significantly larger than the region that radius is 446.7um.Refer to increase
Following method may be used in line imaging region：
1, increase by 1 thickness of object distance glass
Since fingerprint can be directly proportional to 1 thickness of object distance glass with imaging region radius, the thickness for increasing object distance glass 1 is most
Direct method, but the integral thickness of Fingerprint Identification Unit can be increased.One 72 imaging region of aperture reaches identification and requires.With it is small
A light emitting diode 62, each light emitting diode 62 are placed apart from surrounding in hole 72 apart from less than T*tan (arcsin (1/n))
The spacing at center between 72 center of aperture at a distance from equal, the line at 62 center of light emitting diode of 72 surrounding of each aperture, structure
At square, square center is the center of aperture 72.Aperture 72 and light emitting diode 62 are isolated with black glue layer 2.Light-emitting diodes
Pipe 62 is arranged around aperture 72,62 quantity of light emitting diode around each aperture 72 usually no less than 2.
2, illuminator 6 is arranged into an array
It is the technical solution adopted by the present invention, using 72 array image-forming of aperture.72 array of aperture can be quadrate array,
Can also be the array of other shapes, such as regular pentagon, regular hexagon, diamond shape etc..
For the image mosaic that each aperture 72 generates at complete image, this ensures that each imaging of aperture 72 can be seamlessly connected,
Distance between 72 center of aperture is less than or equal to：
T：For 1 thickness of object distance glass；n：For 1 refractive index of object distance glass.
For example, the refractive index of object distance glass 1 is 1.5009, the thickness of object distance glass 1 is 500um, and each aperture 72 can be with
The radius of imaging region is 500*tan (arcsin (1/1.5009))=446.7 (um).This region it is inscribed square be
The length of side is：
So to ensure that each imaging of aperture 72 can be seamlessly connected, then distance is less than or equal to 631.8 between 72 center of aperture
(um)。
In order to ensure the uniform illumination to imaging area, a light emitting diode is spaced at equal intervals in 72 surrounding of each aperture
62, the spacing at the center of each light emitting diode 62 is equal with the spacing at 72 center of hole, the light-emitting diodes of 72 surrounding of each aperture
62 center of pipe has line also to constitute square, and square center is the center of aperture 72.Aperture 72 and light emitting diode 62 by
Black glue layer 2 is isolated.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (5)
1. a kind of device of short distance sense object image, which is characterized in that including by the sequentially connected object distance glass under
(1), black glue layer (2), black film layer (3), image distance glass (4) and imaging sensor (5)；
Multiple illuminators (6) and multiple imaging bodies (7) are spread in the black glue layer (2)；
The illuminator (6) includes the illuminator through-hole (61) of upper and lower directions and shining set on illuminator through-hole (61) bottom
Diode (62)；
The imaging body (7) include upper and lower directions imaging body through-hole (71) be set to imaging body through-hole (71) lower central
Aperture (72) on black film layer (3).
2. the device of short distance sense object image according to claim 1, which is characterized in that the imaging body (7)
Arranged into an array, the aperture (72) of adjacent imaging body (7), which is smaller than, to be equal to：
T：For object distance glass (1) thickness；n：For object distance glass (1) refractive index.
3. the device of short distance sense object image according to claim 2, which is characterized in that the illuminator (6)
Arranged into an array, adjacent illuminator (6) spacing is identical at a distance from adjacent imaging body (7), and each illuminator (6) is respectively arranged on
Nested arrangement, illuminator (6) are set to the equidistant of imaging body (7) surrounding between imaging body (7) array.
4. the device of short distance sense object image according to claim 3, which is characterized in that the imaging body (7)
It is arranged at quadrate array with illuminator (6).
5. the device of short distance sense object image according to claim 3, which is characterized in that the imaging body (7)
With illuminator (6) at regular pentagon, regular hexagon or the arrangement of diamond shape array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162486.7A CN108388868A (en) | 2018-02-27 | 2018-02-27 | A kind of device of short distance sense object image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162486.7A CN108388868A (en) | 2018-02-27 | 2018-02-27 | A kind of device of short distance sense object image |
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| Publication Number | Publication Date |
|---|---|
| CN108388868A true CN108388868A (en) | 2018-08-10 |
Family
ID=63069859
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810162486.7A Pending CN108388868A (en) | 2018-02-27 | 2018-02-27 | A kind of device of short distance sense object image |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103075A1 (en) * | 2018-11-22 | 2020-05-28 | 深圳印象认知技术有限公司 | Image processing method and device |
| US12014568B2 (en) | 2021-01-22 | 2024-06-18 | Boe Technology Group Co., Ltd. | Display panel and display device |
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| CN205910951U (en) * | 2016-05-30 | 2017-01-25 | 深圳印象认知技术有限公司 | Display screen |
| CN106886767A (en) * | 2017-02-23 | 2017-06-23 | 京东方科技集团股份有限公司 | A kind of optical fingerprint identification device and display panel |
| CN107437055A (en) * | 2016-05-25 | 2017-12-05 | 深圳印象认知技术有限公司 | A kind of image acquisition device and fingerprint collecting equipment |
| CN107590428A (en) * | 2016-07-06 | 2018-01-16 | 三星电子株式会社 | Fingerprint sensor and fingerprint sensing system |
| CN107657231A (en) * | 2017-09-27 | 2018-02-02 | 京东方科技集团股份有限公司 | Fingerprint Identification sensor and preparation method thereof and display device |
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2018
- 2018-02-27 CN CN201810162486.7A patent/CN108388868A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104541233A (en) * | 2012-03-15 | 2015-04-22 | 康宁股份有限公司 | Touch screen assemblies for electronic devices |
| CN202758888U (en) * | 2012-08-22 | 2013-02-27 | 标准科技股份有限公司 | Sensor sealing module |
| CN107437055A (en) * | 2016-05-25 | 2017-12-05 | 深圳印象认知技术有限公司 | A kind of image acquisition device and fingerprint collecting equipment |
| CN205910951U (en) * | 2016-05-30 | 2017-01-25 | 深圳印象认知技术有限公司 | Display screen |
| CN107590428A (en) * | 2016-07-06 | 2018-01-16 | 三星电子株式会社 | Fingerprint sensor and fingerprint sensing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103075A1 (en) * | 2018-11-22 | 2020-05-28 | 深圳印象认知技术有限公司 | Image processing method and device |
| US12014568B2 (en) | 2021-01-22 | 2024-06-18 | Boe Technology Group Co., Ltd. | Display panel and display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180810 |