CN106454049A - Iris recognition and photographing combined photographing module based on partition dual-pass optical filter - Google Patents
Iris recognition and photographing combined photographing module based on partition dual-pass optical filter Download PDFInfo
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- CN106454049A CN106454049A CN201610962753.XA CN201610962753A CN106454049A CN 106454049 A CN106454049 A CN 106454049A CN 201610962753 A CN201610962753 A CN 201610962753A CN 106454049 A CN106454049 A CN 106454049A
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- light
- optical filter
- camera module
- visible ray
- filter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting 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
- G06V40/18—Eye characteristics, e.g. of the iris
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Blocking Light For Cameras (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses an iris recognition and photographing combined photographing module based on a partition dual-pass optical filter. Optical filters capable of passing visible light (stopping infrared light) and transmitting the infrared light (stopping the visible light) are arranged between a lens light through hole and a photosensitive imaging chip of the photographing module, so light received on the photosensitive imaging chip is divided into a visible light area and an infrared light area, thereby realizing the iris recognition and photographing function combined photographing module. According to the module, the optical filter is formed by splicing a visible light transmitting (infrared light stopping) optical filter and an infrared light transmitting (visible light stopping) optical fiber, thereby forming the partition dual-pass optical filter, and the splicing part is processed to avoid light leakage.
Description
Technical field
The present invention relates to camera module technical field, especially relates to a kind of by visible ray by (infrared cut of light) optical filtering
Piece and infrared light are carried out being spliced to form the twin-channel optical filter in subregion by (visible ray cut-off) optical filter.
Background technology
Natural light is made up of visible ray and infrared light, it is seen that light and infrared light are located at different-waveband respectively.Iris identification is
By the iris reflex infrared light of pupil, photographic head catches the infrared light of reflection and forms the picture containing iris texture details, takes the photograph
As if any visible ray during head seizure infrared light, it is seen that light can weaken iris texture details, do not reach identification and require.Iris identification mould
Group needs the optical filter for installing visible ray cut-off, infrared light passes through to process light.Commonly take pictures is caught by photographic head
Catch scenery, the visible ray of portrait reflection and picture is formed, infrared light can make photo rubescent, cannot get the photo of odd colors.Commonly
Module of taking pictures needs the optical filter for installing infrared cut of light, visible ray passes through to process light.
Iris identification can be realized simultaneously at present and the mode of camera function is as follows：Shoot module and add micro light-filter switching
Device, when taking pictures, switching mechanism stretches out infrared cut of light visible ray by optical filter, withdrawal infrared light by visible ray cut-off filter
Mating plate is taken pictures；Stretch out infrared light during iris identification to lead to by visible ray edge filter, withdrawal infrared cut of light visible ray
Crossing optical filter carries out iris image acquiring.Its shooting switching construction is as shown in Figure 1.Patents have one kind to take pictures and iris identification
Camera module (the patent No. of multiplexing：CN201520984989.4).Fig. 2 is the camera module structural representation of the patent.
Iris identification with optical filter switching mechanism and compound camera module of taking pictures, due to increased optical filter switching machine
Structure, module size and thickness are greatly increased, and are unfavorable for mobile phone slimming and Miniaturization Design.Additionally, due to increased miniature optical filtering
Piece switching mechanism, the program is all very poor in durability and reliability, causes to use the program without mobile phone so far.
Content of the invention
For the problems referred to above that prior art is present, the applicant provides a kind of iris based on subregion bilateral optical filter
Identification and two-in-one camera module of taking pictures.The present invention is by the infrared cut of light visible ray of camera module of commonly being taken pictures by filter
Mating plate carries out subregion, becomes the optical filter that visible ray and infrared light subregion pass through, and can make a common camera module while tool
Standby take pictures and iris image acquiring function, and the volume of camera module does not change, the durability of module and reliability
Also do not weaken.
Technical scheme is as follows：
A kind of iris identification based on subregion bilateral optical filter and two-in-one camera module of taking pictures, the optical filtering in camera module
Piece is spliced by visible ray edge filter and infrared cut of light optical filter.
The infrared cut of light optical filter is white glass, smalt or blue sprayed glass；A length of 650 ± the 10nm of its half-wave,
Main imaging light wave band is between 360-650nm；After 650nm, light penetration halves step by step, reaches 0 near 710nm.
The visible ray edge filter can be 810-920nm by wavelength of light.
The visible ray edge filter and infrared cut of light optical filter connecting method include glue bonding, laser welding,
Ultrasonic bonding, or subregion plated film on one block of complete glass, spraying visible ray filter membrane and infrared light filter membrane reach respectively
To splicing effect.
The mosaic coating shading material of the visible ray edge filter and infrared cut of light optical filter prevents dazzle, ghost
Shadow is produced.The shading material can be light tight glue.
The visible ray edge filter and the respective area of infrared cut of light optical filter are not less than the photosensitive core of camera module
The imaging region area of piece, two kinds of optical filter area ratios are adjusted according to actual needs.
The camera lens of the camera module sets gradually 3～6 polishing camera lenses and a piece of part ball from the beginning of camera lens light hole
Face plastic lens；The spherical calotte plastic lens are sphere, the sphere in the part corresponding to visible ray edge filter
Focus fall on the surface of visible ray edge filter；The spherical calotte plastic lens are corresponding to infrared cut of light optical filter
Part be aspheric surface；Extraneous light, is finally focused on imager chip by the refraction of corresponding number of shots through light hole
Form image.
The present invention is beneficial to be had technical effect that：
The present invention is in the middle of camera module group lens light hole and photosensitive imaging chip, and setting can be (red by visible ray respectively
The cut-off of outer light) and infrared light (visible ray cut-off) optical filter, make the light of acceptance on photosensitive imaging chip be divided into visible region
Domain and infrared light region, the camera module two-in-one so as to realize iris identification and camera function.
For the scheme with micro light-filter switching mechanism in prior art, the present invention can realize infrared identification and
While two functions of taking pictures are incorporated in a camera module, make that the size of camera module is as little as possible, thickness is as thin as possible,
Reliability and reliability are higher, and can be placed into the position of mobile phone front-facing camera, it is not necessary to which internal structure of mobile phone is entered
Row is redesigned, and the slimming miniaturization of mobile phone is easily realized.
Front-facing camera for different size, it is only necessary to which filtered inside piece is replaced by subregion visible ray infrared light bilateral
Optical filter, you can realize iris identification and 2-in-1 1 function of taking pictures, compatibility is high, flexible and changeable.
Description of the drawings
Fig. 1 is the camera module structure that can realize iris identification and camera function in prior art simultaneously；
Fig. 2 is the camera module structural representation of patent CN201520984989.4；
The filter sheet structure that Fig. 3 is spliced by visible ray edge filter and infrared cut of light optical filter for the present invention shows
It is intended to；
Fig. 4 is the imaging mode schematic diagram of camera module of the present invention；
Fig. 5 is micro-lens optics configuration schematic diagram；
Fig. 6 is the light transmitting wavelength schematic diagram of infrared cut of light optical filter used by the present invention；
Fig. 7 is the light transmitting wavelength schematic diagram of visible ray edge filter used by the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is specifically described.
As shown in figure 3, a kind of iris identification based on subregion bilateral optical filter of present invention offer and two-in-one taking the photograph of taking pictures
As module, a kind of splicing optical filter is carried in the position for carrying optical filter 1 in camera module, i.e., by visible ray edge filter 2 (thoroughly
Cross infrared light) and infrared cut of light optical filter 3 (passing through visible ray) be spliced.
Wherein visible ray edge filter 2 can be 810-920nm by wavelength of light, as shown in Figure 6.Infrared cut of light is filtered
Mating plate 3 is white glass, and smalt or indigo plant spray (Blue coating) glass；A length of 650 ± the 10nm of its half-wave, main imaging
Line wave band is between 360-650nm；After 650nm, light penetration halves step by step, reaches 0, as shown in Figure 5 near 710nm.Can
See that light edge filter 2 and the thickness of infrared cut of light optical filter 3 are 0.2-0.22mm.
Visible ray edge filter 2 and the respective area of infrared cut of light optical filter 3 are not less than camera module sensitive chip
Imaging region area, two kinds of optical filter area ratios are adjusted according to actual needs.
Visible ray edge filter 2 and 3 connecting method of infrared cut of light optical filter can have multiple, such as glue bonding,
Laser welding, ultrasonic bonding, or subregion plated film on one block of complete glass, spray visible ray filter membrane and infrared light respectively
Filter membrane reaches splicing effect, etc..
Seaming position, can be in the light tight glue of coating at splicing gap 4 in order to prevent light leak from causing the phenomenon of ghost, dazzle
Or other shading materials.
During the camera module work that the present invention is provided, as shown in figure 4, the natural light (visible ray and red of scenery, portrait reflection
Outer light) entered inside camera module by camera lens light hole 5, light needs to clap when camera lens refraction is by subregion optical filter
According to part infrared light filtered, only pass through visible ray, form photograph image on corresponding imager chip.Need iris identification
Some visible light filtered, only by the infrared light of iris reflex, form iris image on corresponding imager chip region.
The present invention is under complete image, and infrared light filtered region is that the imaging of normal shot region, it is seen that light filtered region is sent out
Red.By bilateral optical filter while reaching two kinds of different imaging requirements, the image output of formation is arrived on same photosensitive area
Application end carries out cutting choosing, and iris region image is used for iris identification, and shot region image is used for forming photo.
In order to correct the uniformity of the light for injecting visible ray edge filter 2 and infrared cut of light optical filter 3 further
And brightness, the camera lens of the camera module sets gradually 3～6 polishing camera lenses 6 and a piece of parts from the beginning of camera lens light hole 5
Sphere plastic lens 7, extraneous light, is finally focused on imager chip by the refraction of corresponding number of shots through light hole 5
Image is formed, as shown in Figure 5.Which part sphere plastic lens 7 are sphere in the part corresponding to visible ray edge filter 2
8, the focus of sphere 8 falls on the surface of visible ray edge filter 2；It is non-in the part corresponding to infrared cut of light optical filter 3
Sphere.
Claims (8)
1. a kind of iris identification based on subregion bilateral optical filter and two-in-one camera module of taking pictures, it is characterised in that camera module
In optical filter be spliced by visible ray edge filter and infrared cut of light optical filter.
2. camera module according to claim 1, it is characterised in that the infrared cut of light optical filter is white glass, blue glass
Glass or blue sprayed glass；A length of 650 ± the 10nm of its half-wave, main imaging light wave band is between 360-650nm；Light after 650nm
Line transmitance halves step by step, reaches 0 near 710nm.
3. camera module according to claim 1, it is characterised in that the visible ray edge filter can pass through light ripple
A length of 810-920nm.
4. camera module according to claim 1, it is characterised in that the visible ray edge filter and infrared cut of light
Optical filter connecting method includes glue bonding, laser welding, ultrasonic bonding, or subregion plated film on one block of complete glass,
Spraying visible ray filter membrane and infrared light filter membrane reach splicing effect respectively.
5. camera module according to claim 1, it is characterised in that the visible ray edge filter and infrared cut of light
The mosaic coating shading material of optical filter prevents dazzle, ghost from producing.
6. camera module according to claim 5, it is characterised in that the shading material be.
7. camera module according to claim 1, it is characterised in that the visible ray edge filter and infrared cut of light
The respective area of optical filter is not less than the imaging region area of camera module sensitive chip, and two kinds of optical filter area ratios are according to reality
Needs are adjusted.
8. camera module according to claim 1, it is characterised in that the camera lens of the camera module is opened from camera lens light hole
Begin, set gradually 3～6 polishing camera lenses and a piece of spherical calotte plastic lens；The spherical calotte plastic lens are being corresponded to
The part of visible ray edge filter is sphere, and the focus of the sphere falls on the surface of visible ray edge filter；The portion
Bulb separation face plastic lens are aspheric surface in the part corresponding to infrared cut of light optical filter；Extraneous light passes through through light hole
The refraction of corresponding number of shots, finally focuses on formation image on imager chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962753.XA CN106454049B (en) | 2016-10-28 | 2016-10-28 | Iris discernment and two unification modules of making a video recording of shooing based on partition bi-pass filter |
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|---|---|---|---|
| CN201610962753.XA CN106454049B (en) | 2016-10-28 | 2016-10-28 | Iris discernment and two unification modules of making a video recording of shooing based on partition bi-pass filter |
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| CN106454049A true CN106454049A (en) | 2017-02-22 |
| CN106454049B CN106454049B (en) | 2021-12-31 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773457A (en) * | 2016-12-22 | 2017-05-31 | 信利光电股份有限公司 | A kind of camera module of integrated iris and auto heterodyne camera function |
| CN106851078A (en) * | 2017-04-07 | 2017-06-13 | 信利光电股份有限公司 | A kind of filtering apparatus and camera module |
| CN107172338A (en) * | 2017-06-30 | 2017-09-15 | 联想(北京)有限公司 | A kind of camera and electronic equipment |
| CN107301392A (en) * | 2017-06-20 | 2017-10-27 | 华天科技（昆山）电子有限公司 | Wafer level image harvester |
| CN107302650A (en) * | 2017-06-26 | 2017-10-27 | 信利光电股份有限公司 | The preparation method and camera module and electronic equipment of a kind of base |
| CN107516066A (en) * | 2017-07-20 | 2017-12-26 | 广东欧珀移动通信有限公司 | detection method and related product |
| CN108875472A (en) * | 2017-06-26 | 2018-11-23 | 北京旷视科技有限公司 | Image collecting device and face auth method based on the image collecting device |
| CN109508588A (en) * | 2017-09-15 | 2019-03-22 | 杭州海康威视数字技术股份有限公司 | Monitoring method, device, system, electronic equipment and computer readable storage medium |
| CN109672763A (en) * | 2017-10-16 | 2019-04-23 | 康达智株式会社 | Photographic device |
| CN110245627A (en) * | 2019-06-19 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN110955098A (en) * | 2020-02-25 | 2020-04-03 | 杭州美迪凯光电科技股份有限公司 | Camera switching module and manufacturing method thereof |
| CN111163244A (en) * | 2018-11-08 | 2020-05-15 | 宁波舜宇光电信息有限公司 | Camera module and application thereof |
| CN112188046A (en) * | 2019-07-05 | 2021-01-05 | 杭州海康威视数字技术股份有限公司 | Imaging assembly of camera, camera and filtering control method thereof |
| CN110231672B (en) * | 2018-02-28 | 2021-08-10 | 张家港康得新光电材料有限公司 | Preparation method and preparation system of optical filter module |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773457A (en) * | 2016-12-22 | 2017-05-31 | 信利光电股份有限公司 | A kind of camera module of integrated iris and auto heterodyne camera function |
| CN106851078A (en) * | 2017-04-07 | 2017-06-13 | 信利光电股份有限公司 | A kind of filtering apparatus and camera module |
| CN107301392A (en) * | 2017-06-20 | 2017-10-27 | 华天科技（昆山）电子有限公司 | Wafer level image harvester |
| CN107302650B (en) * | 2017-06-26 | 2020-06-19 | 信利光电股份有限公司 | Manufacturing method of base, camera module and electronic equipment |
| CN107302650A (en) * | 2017-06-26 | 2017-10-27 | 信利光电股份有限公司 | The preparation method and camera module and electronic equipment of a kind of base |
| CN108875472B (en) * | 2017-06-26 | 2021-08-24 | 北京旷视科技有限公司 | Image acquisition device and face identity verification method based on image acquisition device |
| CN108875472A (en) * | 2017-06-26 | 2018-11-23 | 北京旷视科技有限公司 | Image collecting device and face auth method based on the image collecting device |
| CN107172338A (en) * | 2017-06-30 | 2017-09-15 | 联想(北京)有限公司 | A kind of camera and electronic equipment |
| CN107172338B (en) * | 2017-06-30 | 2021-01-15 | 联想(北京)有限公司 | Camera and electronic equipment |
| CN107516066B (en) * | 2017-07-20 | 2021-03-09 | Oppo广东移动通信有限公司 | Detection method and related product |
| CN107516066A (en) * | 2017-07-20 | 2017-12-26 | 广东欧珀移动通信有限公司 | detection method and related product |
| CN109508588A (en) * | 2017-09-15 | 2019-03-22 | 杭州海康威视数字技术股份有限公司 | Monitoring method, device, system, electronic equipment and computer readable storage medium |
| US11275952B2 (en) | 2017-09-15 | 2022-03-15 | Hangzhou Hikvision Digital Technology Co., Ltd. | Monitoring method, apparatus and system, electronic device, and computer readable storage medium |
| CN109672763A (en) * | 2017-10-16 | 2019-04-23 | 康达智株式会社 | Photographic device |
| CN110231672B (en) * | 2018-02-28 | 2021-08-10 | 张家港康得新光电材料有限公司 | Preparation method and preparation system of optical filter module |
| CN111163244A (en) * | 2018-11-08 | 2020-05-15 | 宁波舜宇光电信息有限公司 | Camera module and application thereof |
| CN111163244B (en) * | 2018-11-08 | 2022-02-22 | 宁波舜宇光电信息有限公司 | Camera module and application thereof |
| CN110245627A (en) * | 2019-06-19 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN112188046A (en) * | 2019-07-05 | 2021-01-05 | 杭州海康威视数字技术股份有限公司 | Imaging assembly of camera, camera and filtering control method thereof |
| CN112188046B (en) * | 2019-07-05 | 2021-09-10 | 杭州海康威视数字技术股份有限公司 | Imaging assembly of camera, camera and filtering control method thereof |
| CN110955098A (en) * | 2020-02-25 | 2020-04-03 | 杭州美迪凯光电科技股份有限公司 | Camera switching module and manufacturing method thereof |
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