CN107273874A - Filter coating, iris recognition module and electronic installation - Google Patents
Filter coating, iris recognition module and electronic installation Download PDFInfo
- Publication number
- CN107273874A CN107273874A CN201710575131.6A CN201710575131A CN107273874A CN 107273874 A CN107273874 A CN 107273874A CN 201710575131 A CN201710575131 A CN 201710575131A CN 107273874 A CN107273874 A CN 107273874A
- Authority
- CN
- China
- Prior art keywords
- infrared light
- filter coating
- light supply
- electronic installation
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
Abstract
The present invention discloses a kind of filter coating, iris recognition module and electronic installation.Filter coating is used to filter out visible ray and by infrared light, and the electromagnetic wave that wavelength is less than or equal to 780nm is less than or equal to 5% through the transmitance of the filter coating.The filter coating of embodiment of the present invention, can filter off more than 95% electromagnetic wave of the wavelength less than or equal to 780nm, user is not almost seen feux rouges, lift Consumer's Experience.
Description
Technical field
The present invention relates to iris recognition technology field, more particularly to a kind of filter coating, iris recognition module and electronic installation.
Background technology
For assisted acquisition infrared image, iris recognition module includes infrared light supply.The preferable operation wavelength of infrared light supply
It is 810nm, is difficult to narrow yet with the frequency spectrum of infrared light supply, therefore, the infrared light of infrared light supply transmitting has frequently included ripple
A length of 780nm visible ray, user can see feux rouges, influence Consumer's Experience.
The content of the invention
Embodiments of the present invention provide a kind of filter coating, iris recognition module and electronic installation.
A kind of filter coating of embodiment of the present invention, for filtering out visible ray and by infrared light, wavelength is less than or equal to
780nm electromagnetic wave is less than or equal to 5% through the transmitance of the filter coating.
The filter coating of embodiment of the present invention, can filter off more than 95% electromagnetic wave of the wavelength less than or equal to 780nm, make
User does not almost see feux rouges, lifts Consumer's Experience.
In some embodiments, wavelength is more than or equal to 810nm transmitance height of the electromagnetic wave through the filter coating
In 80%.
A kind of iris recognition module of embodiment of the present invention includes:
Infrared light supply, the infrared light supply is used to launch infrared light;With
It is arranged on the filter coating described in the light path of the infrared light supply and any of the above-described embodiment.
The iris recognition module of embodiment of the present invention, the wavelength that filter coating can filter off more than 95% is less than or equal to
780nm electromagnetic wave, makes user almost not see feux rouges, lifts Consumer's Experience.
In some embodiments, the infrared light supply includes LED.
A kind of electronic installation of embodiment of the present invention includes:
Shell, the shell is formed with launch window;With
Iris recognition module described in above-mentioned embodiment, the infrared light supply is arranged in the shell and by described
Launch window launches the infrared light;
The filter coating is arranged in the launch window.
The electronic installation of embodiment of the present invention, the wavelength that filter coating can filter off more than 95% is less than or equal to 780nm's
Electromagnetic wave, makes user almost not see feux rouges, lifts Consumer's Experience.
In some embodiments, the shell is also formed with acquisition window, and the iris recognition module includes being arranged on
The infrared camera exposed in the shell and from the acquisition window, the filter coating is arranged on the acquisition window.
In some embodiments, the shell includes the cover plate of housing and setting on the housing, the filter coating
The cover plate is formed at, the orthographic projection in the filter coating towards the infrared light supply direction covers the infrared light supply.
In some embodiments, the filter coating formation is placed in the cover plate and described in the lower surface of the cover plate
Between infrared light supply.
In some embodiments, the filter coating is formed at the cover plate by way of plating.
In some embodiments, the electronic installation also includes mainboard, and the infrared infrared light supply is arranged on the master
On plate.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partly by from following
Become obvious in description, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Obtain substantially and be readily appreciated that, wherein:
Fig. 1 is the floor map of the electronic installation of embodiment of the present invention;
Wavelength-transmitance figure when Fig. 2 is filter coating of the electromagnetic wave Jing Guo embodiment of the present invention.
Main element symbol description:
Electronic installation 1000, iris recognition module 100, filter coating 10, infrared light supply 20, infrared camera 30, shell
200, launch window 220, acquisition window 240, housing 260, cover plate 280, mainboard 300.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, one or more feature can be expressed or be implicitly included to the feature of " second ".
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can
To be mechanical connection or electrical connection or can mutually communicate;Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of the invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or
It " under " can directly be contacted including the first and second features, can also include the first and second features not be direct contact but
Pass through the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include
Fisrt feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First
Feature second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Only represent that fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between discussed various embodiments itself are not indicated and/or are set
Relation.In addition, the invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Refer to Fig. 1 and Fig. 2, a kind of filter coating 10 of embodiment of the present invention, for filtering out visible ray and by infrared
Light, the electromagnetic wave that wavelength is less than or equal to 780nm is less than or equal to 5% through the transmitance of filter coating 10.
The filter coating 10 of embodiment of the present invention, can filter off more than 95% electromagnetic wave of the wavelength less than or equal to 780nm,
User is not almost seen feux rouges, lift Consumer's Experience.
It is appreciated that being visible ray, human eye can see that when wavelength is less than or equal to 780nm.Therefore, it will can filter
Film 10 is arranged in the light path for the infrared light that infrared light supply 20 is sent to filter off most of visible ray sent with infrared light.
In some embodiments, electromagnetic wave of the wavelength more than or equal to 810nm is higher than through the transmitance of filter coating 10
80%.
In this way, when filter coating 10 is arranged in the light path of infrared light, transmission influence of the filter coating 10 on infrared light is smaller,
Most of infrared light can be made.
A kind of iris recognition module 100 of embodiment of the present invention includes infrared light supply 20 and any of the above-described embodiment
Filter coating 10.Infrared light supply 20 is used to launch infrared light;Filter coating 10 is arranged in the light path of infrared light supply 20.
The iris recognition module 100 of embodiment of the present invention, the wavelength that filter coating 10 can filter off more than 95% is less than or waited
In 780nm electromagnetic wave, user is not almost seen feux rouges, lift Consumer's Experience.
It is appreciated that infrared light supply 20 sends infrared light, but it is due to that infrared light frequency spectrum is difficult to narrow, wavelength can be sent small
In or equal to 780nm electromagnetic wave, but wavelength is visible ray when being less than or equal to 780nm, and human eye can see that, therefore, will
Filter coating 10 is arranged in the light path of the infrared light of the transmitting of infrared light supply 20, filters out the electricity that most of wavelength is less than 780nm
Magnetic wave.
In some embodiments, infrared light supply 20 includes LED.
In this way, LED power is low, caloric value is low, and when infrared light supply 20 works, power consumption is relatively low, and the heat of generation is small, to week
The influence of other components enclosed is small.
Certainly, infrared light supply 20 is not limited to LED, in other embodiments, can also select other component conducts
Infrared light supply 20.
A kind of electronic installation 1000 of embodiment of the present invention includes shell 200 and the iris recognition mould of above-mentioned embodiment
Group 100.Shell 200 is formed with launch window 220.Infrared light supply 20 is arranged in shell 200 and launched by launch window 220
Infrared light.Filter coating 10 is arranged in launch window 220.
The electronic installation 1000 of embodiment of the present invention, the wavelength that filter coating 10 can filter off more than 95% is less than or equal to
780nm electromagnetic wave, makes user almost not see feux rouges, lifts Consumer's Experience.
Electronic installation 1000 includes but is not limited to mobile phone, tablet personal computer, intelligent watch etc..
In some embodiments, shell 200 is also formed with acquisition window 240, and iris recognition module 100 includes being arranged on
The infrared camera 30 exposed in shell 200 and from acquisition window 240, filter coating 10 is arranged on acquisition window 240.
In this way, when gathering iris image by infrared camera 30, filter coating 10 filters out most of visible ray, contributes to
Infrared camera 30 is set to collect apparent iris image.
Iris recognition module 100 is to determine user identity, iris by contrasting the similitude between iris image feature
Identification generally requires the process by iris image acquisition, iris image processing and iris image identification.By that will collect
Iris image be compared with the iris image that prestores, if comparison result unanimously if be verified.Due to the yellow in Asia
Iris color be typically brown or black, be difficult to collect clearly iris image using common camera.Therefore, in iris
During image is obtained, it need to be coordinated using special infrared camera 30 and infrared light supply 20 and be acquired, it is clear to collect
Clear iris image.
Specifically, the light filling scope of infrared light supply 20 covers the visual field of infrared camera 30.In this way, the benefit of infrared light supply 20
Light effect is good, further such that infrared camera 30 collects apparent iris image.
Further, infrared light supply 20 is arranged at intervals with infrared camera 30.In this way, helping to reduce the work of infrared light supply 20
As when the influence to infrared camera 30 of the heat that produces.
In some embodiments, shell 200 includes housing 260 and the cover plate 280 being arranged on housing 260, filter coating
10 are formed at cover plate 280, and the orthographic projection in filter coating 10 towards the direction of infrared light supply 20 covers infrared light supply 20.
In this way, filter coating 10 is arranged on cover plate 280, infrared light supply 20 is arranged in housing 260, is realized iris recognition
Module 100 is preferably installed on housing 260.
It is appreciated that when the orthographic projection in filter coating 10 towards the direction of infrared light supply 20 covers infrared light supply 20, from infrared light
The light path for the infrared light that source 20 is sent passes through filter coating 10.
Specifically, cover plate 280 includes transmission region, in one example, the transmission region formation launch window of cover plate 280
220 and acquisition window 240.Transmission region can be the through hole opened up on entity transmission region or cover plate 280.In this way,
The infrared light that infrared light supply 20 is launched can be passed through outside transmission region to the electronic installation 1000 of cover plate 280 from launch window 220,
Light outside electronic installation 1000 can also enter electronic installation from transmission region of the acquisition window 240 through cover plate 280
Gathered inside 1000 by infrared camera 30.
In some embodiments, filter coating 10 forms the lower surface in cover plate 280, is placed in cover plate 280 and infrared light supply
Between 20.
So so that the upper surface of cover plate 280 is smooth so that electronic installation 1000 is more attractive in appearance.
Specifically, cover plate 280 is arranged on housing 260, the shell of housing 260 and the formation electronic installation 1000 of cover plate 280
200.The upper surface of cover plate 280 is exposed to the outside of electronic installation 1000, and the lower surface of cover plate 280 is in electronic installation 1000
Portion.Filter coating 10 forms the lower surface in cover plate 280, in other words, and optical filter is arranged on inside electronic installation 1000, in this way,
Optical filter can be protected, extends the service life of optical filter.
It is appreciated that cover plate 280, filter coating 10 and infrared light supply 20 are along the direction perpendicular to cover plate 280 from electronic installation
To setting gradually inside electronic installation 1000 outside 1000.
In some embodiments, filter coating 10 is formed at cover plate 280 by way of plating.
In this way, being simple to manufacture conveniently, the production efficiency of electronic installation 1000 is favorably improved, production cost is reduced.
Certainly, filter coating 10 is not limited by the mode of plating and is formed at cover plate 280, in other embodiments, also may be used
To use other modes.
In some embodiments, electronic installation 1000 also includes mainboard 300, and infrared infrared light supply 20 is arranged on mainboard
On 300.
In this way, mainboard 300, which is infrared light supply 20, provides installation support.
Specifically, control circuit is provided with mainboard 300, infrared light supply 20 is connected with control circuit, control circuit control
The opening and closing of infrared light supply 20.
In one example, infrared camera 30 is electrically connected with control circuit, and control circuit is additionally operable to control infrared photography
First 30 obtain iris image.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation
The description of mode ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment or example description
Specific features, structure, material or feature are contained at least one embodiment of the present invention or example.In this specification
In, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific spy of description
Levy, structure, material or feature can in an appropriate manner be combined in any one or more embodiments or example.
While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of changes, modification in the case of not departing from the principle and objective of the present invention, replace and become
Type, the scope of the present invention is limited by claim and its equivalent.
Claims (10)
1. a kind of filter coating, it is characterised in that the filter coating is used to filter out visible ray and by infrared light, and wavelength is less than or waited
The transmitance for passing through the filter coating in 780nm electromagnetic wave is less than or equal to 5%.
2. filter coating according to claim 1, it is characterised in that the electromagnetic wave that wavelength is more than or equal to 810nm passes through institute
The transmitance for stating filter coating is higher than 80%.
3. a kind of iris recognition module, it is characterised in that including:
Infrared light supply, the infrared light supply is used to launch infrared light;With
It is arranged on filter coating in the light path of the infrared light supply and as claimed in claim 1 or 2.
4. iris recognition module according to claim 1, it is characterised in that the infrared light supply includes LED.
5. a kind of electronic installation, it is characterised in that including:
Shell, the shell is formed with launch window;With
Iris recognition module as claimed in claim 3, the infrared light supply is arranged in the shell and by the transmitting
Window launches the infrared light;
The filter coating is arranged in the launch window.
6. electronic installation according to claim 5, it is characterised in that the shell is also formed with acquisition window, the rainbow
Film identification module includes being arranged on the infrared camera exposed in the shell and from the acquisition window, and the filter coating is set
On the acquisition window.
7. electronic installation according to claim 5, it is characterised in that the shell includes housing and is arranged on the housing
On cover plate, the filter coating is formed at the cover plate, and the orthographic projection in the filter coating towards the infrared light supply direction covers institute
State infrared light supply.
8. electronic installation according to claim 6, it is characterised in that following table of the filter coating formation in the cover plate
Face, is placed between the cover plate and the infrared light supply.
9. electronic installation according to claim 6, it is characterised in that the filter coating is formed at institute by way of plating
State cover plate.
10. electronic installation according to claim 5, it is characterised in that the electronic installation also includes mainboard, described infrared
Infrared light supply is arranged on the mainboard.
Priority Applications (1)
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CN201710575131.6A CN107273874B (en) | 2017-07-14 | 2017-07-14 | Filter coating, iris recognition module and electronic device |
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CN201710575131.6A CN107273874B (en) | 2017-07-14 | 2017-07-14 | Filter coating, iris recognition module and electronic device |
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CN107273874A true CN107273874A (en) | 2017-10-20 |
CN107273874B CN107273874B (en) | 2020-05-22 |
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Cited By (2)
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WO2019114568A1 (en) * | 2017-12-13 | 2019-06-20 | Oppo广东移动通信有限公司 | Iris recognition assembly for electronic apparatus, and electronic apparatus provided with iris recognition assembly |
WO2019114569A1 (en) * | 2017-12-13 | 2019-06-20 | Oppo广东移动通信有限公司 | Iris recognition assembly for electronic apparatus, and electronic apparatus provided with iris recognition assembly |
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