CN107197124A - A kind of camera module and electronic equipment - Google Patents
A kind of camera module and electronic equipment Download PDFInfo
- Publication number
- CN107197124A CN107197124A CN201710357912.8A CN201710357912A CN107197124A CN 107197124 A CN107197124 A CN 107197124A CN 201710357912 A CN201710357912 A CN 201710357912A CN 107197124 A CN107197124 A CN 107197124A
- Authority
- CN
- China
- Prior art keywords
- camera module
- control unit
- camera lens
- hall element
- unit
- 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.)
- Pending
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Classifications
-
- 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
-
- 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
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a kind of camera module, including PCB and the Hall element being arranged in the PCB, the Hall element is connected with the control unit being arranged in the PCB, and the position for the magnetic part for being arranged on camera lens being subject to according to sensing exports induced-current, described control unit controls to be output to the driving current of the coil of voice coil motor according to the induced-current, controls the position of the camera lens.In addition, the invention also discloses a kind of electronic equipment, including camera module as described above.The camera module and electronic equipment, by the way that Hall element is arranged in PCB, it is connected with control unit, because Hall element is no longer provided separately within inside voice coil motor, it need to be only connected by pin with control unit, so that the processing technology of voice coil motor becomes simple, yields is improved so that the manufacturing cost of camera module and electronic equipment is reduced.
Description
Technical field
The present invention relates to digital photographing technique field, more particularly to a kind of camera module and electronic equipment.
Background technology
With making constant progress for society, people are continuously increased to the demand taken a picture and imaged, digital vedio recording
Using more and more extensive, such as mobile phone, computer camera.
Because common camera module is in electrophotographic process, if operator shakes so that camera module is being clapped
It is moved during taking the photograph, shooting effect will be reduced, therefore, typically can be all increased focusing motor, improve shooting effect.
The focusing motor (closed loop motor, optical anti-vibration motor) that current existing mobile phone camera module is used, hall sensing
Device is built in VCM (Voice Coil Motor's writes a Chinese character in simplified form, voice coil motor).The camera of smart mobile phone, can be with by VCM motor
The position of camera lens is adjusted to change focal length so that most clearly state is presented in shooting.Because hall sensor is typically built in VCM
Interior, this just makes VCM processing technology thicken, and processing yields is low, and mobile phone module factory is because the increase of motor pin so that mould
The processing technology of group is complicated, and use cost is high.
The content of the invention
It is an object of the invention to provide a kind of camera module and electronic equipment, yields is improved, production cost is reduced.
In order to solve the above technical problems, the embodiments of the invention provide a kind of camera module, including PCB and setting
Hall element in the PCB, the Hall element and the control unit being arranged in the PCB connect
Connect, and the position for the magnetic part for being arranged on camera lens being subject to according to sensing exports induced-current, described control unit is according to institute
The driving current that induced-current control is output to the coil of voice coil motor is stated, the position of the camera lens is controlled.
Wherein, the magnetic part is the ambipolar magnet of strip.
Wherein, in addition to the guide rail ball of the camera lens is arranged on, the moving direction for controlling the camera lens makes the mirror
Head is vertically moved.
Wherein, in addition to the memory cell of the PCB is arranged on, the memory cell connects with described control unit
Connect, for preserving the control information of described control unit and the initial setting of register.
Wherein, in addition to compensate than unit, the compensating unit and PID unit, the compensating unit and Hall member
Part is connected, and the PID unit is connected with the compensating unit, described control unit, for what is exported according to described control unit
The position for the camera lens that target location instruction to the camera lens senses with the Hall element obtains and exports difference value.
Wherein, in addition to the output end of the PID unit predrive unit that is connected and connect with the predrive unit
The H-bridge drive circuit connect, the difference value driving that the predrive element circuit is exported according to the PID exports the electricity of correspondence direction
Stream, and the driving current is inputted to the coil after H-bridge drive circuit processing.
In addition, the embodiment of the present invention additionally provides a kind of electronic equipment, including camera module as described above.
Camera module and electronic equipment that the embodiment of the present invention is provided, compared with prior art, with advantages below:
Camera module provided in an embodiment of the present invention, including PCB and the Hall being arranged in the PCB
Element, the Hall element is connected with the control unit being arranged in the PCB, and according to being arranged on that sensing is subject to
The position output induced-current of the magnetic part of camera lens, described control unit is output to voice coil loudspeaker voice coil horse according to induced-current control
The driving current of the coil reached, controls the position of the camera lens.
Electronic equipment provided in an embodiment of the present invention, including camera module as described above.
The camera module and electronic equipment, by the way that Hall element is arranged in PCB, connect with control unit
Connect, because Hall element is no longer provided separately within inside voice coil motor, need to be only connected by pin with control unit so that voice coil loudspeaker voice coil
The processing technology of motor becomes simple, improves yields so that the manufacturing cost of camera module and electronic equipment is dropped
It is low.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of embodiment of camera module provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is a kind of structural representation of embodiment of camera module provided in an embodiment of the present invention
Figure.
In a kind of embodiment, the camera module, including PCB 10 and it is arranged on the PCB circuits
Hall element 11 on plate 10, the Hall element 11 is connected with the control unit 12 being arranged in the PCB 10, and
The position for the magnetic part 21 for being arranged on camera lens 20 being subject to according to sensing exports induced-current, and described control unit 12 is according to institute
The driving current that induced-current control is output to the coil 31 of voice coil motor 30 is stated, the position of the camera lens 20 is controlled.
By the way that Hall element 11 is arranged in PCB 10, it is connected with control unit 12, due to Hall element 11 not
It is provided separately within inside voice coil motor 30, need to be only connected by pin with control unit 12 so that the processing of voice coil motor 30 again
Technique becomes simple, the reducing work technique of camera module, improves yields, reduces production cost.
In the present invention, Hall element 11 (is generally permanent magnetism by the magnet component sensed in real time installed in the end of camera lens 20
Iron), because magnetic part 21 is under diverse location, the magnetic field intensity that Hall element 11 is sensed is different, and the electric current of output is different.
The magnetic field intensity of the magnetic part 21 sensed is converted to electric current output by Hall element 11, and such control unit 12 is according to acquisition
The induced-current that Hall element 11 is exported, it becomes possible to the good accurate physical location for obtaining camera lens 20, is then output to control unit
12, there is control unit 12 to be modified, control camera lens 20 is moved to target location, thus made by the feedback of Hall element 11
With realizing the function of auto-focusing.
It is preferred that, the magnetic part 21 is the ambipolar magnet of strip, the magnetic field distribution one of the ambipolar magnet of strip
As be middle weak, two is strong so that the Hall element 11 of small volume can accurately sense magnetic part 21 with camera lens 20
Change in location, reaches accurate feedback, realizes the purpose of rapid focus.
It is pointed out that the present invention is big to the shape of the magnetic part 21, type, magnetic field distribution and magnetic field
It is small, it is not specifically limited in the mounting means of camera lens 20.
In the present invention, the effect of the coil 31 of voice coil motor 30 is after powered up, to produce magnetic field, and in camera lens 20
Magnetic part 21 produce magnetic field interact, reach promote camera lens 20 movement purpose, the electric current that coil 31 passes through
Bigger, magnetic field is stronger.The electric current that coil 31 passes through is related to the control instruction to camera lens 20 that control unit 12 is exported.
It is pointed out that the present invention is not specifically limited to coil 31 and its magnetic field intensity produced, mounting means.
The run-off the straight in moving process in order to avoid camera lens 20, realizes the accuracy of focusing, and the camera module is also wrapped
The guide rail ball for being arranged on the camera lens 20 is included, the moving direction for controlling the camera lens 20 makes the camera lens 20 along vertical side
To movement.
Certainly, the voice coil motor 30 coordinated with camera lens 20 can also set guide rail, by the guide rail ball of camera lens 20 in voice coil motor
Moved in 30 guide rail, define that the moving direction of camera lens 20 in the range of the guide rail of voice coil motor 30 is limited, improves mirror
The stationarity and accuracy of first 20 motion.
It is pointed out that the present invention is not limited the part for limiting the direction of motion of camera lens 20.
Due in the focus adjustment of the camera lens 20 of camera module, it is necessary to certain some particular focal length position and some ginseng
Number is stored so that camera lens 20 directly can be adjusted into defined location etc..Therefore, the camera module also includes setting
In the memory cell of the PCB 10, the memory cell is connected with described control unit 12, for preserving the control
The control information of unit 12 and the initial setting of register.
It is pointed out that the present invention is to the storage mode of memory cell, the storage size of memory cell and storage
Content is not specifically limited.
It is typically not straight because the induced-current that Hall element 11 is exported according to the magnetic part 21 to camera lens 20 is current value
Input control unit 12 is connect, but carries out certain conversion.
Control unit 12 is usually that directly the position of camera lens 20 is set, and face taking-up (or is changed such as from memory cell
Calculate) enter the corresponding current data of data from what input was inputted.Because the electric current that Hall element 11 senses can not be directly obtained
The physical location of camera lens 20, it is therefore desirable to changed by some, induced-current is converted to the flux information of magnetic part 21,
Then be amplified and A/D conversion after export.Therefore the camera module also include compensation than unit, the compensating unit and
PID unit, the compensating unit is connected with the Hall element 11, the PID unit and the compensating unit, the control list
Member 12 is connected, and the target location to the camera lens 20 for being exported according to described control unit 12 is instructed and the Hall element
The position of the camera lens 20 of 11 sensings obtains and exports difference value.The effect of compensating unit is that Hall element 11 is implemented into sensing
Induced-current is converted to the flux information of magnetic part 21, converses the physical location of current camera lens 20.Due to PID unit
Target location and physical location with reference to the camera lens 20 of the setting of control unit 12, obtain the difference value of the two, according to the difference
Value is adjusted so that camera lens 20 reaches target location.
In a kind of embodiment, the camera module is pre- also including what is be connected with the output end of the PID unit
Driver element and the H-bridge drive circuit being connected with the predrive unit, the predrive element circuit are exported according to the PID
Difference value driving output correspondence direction electric current, and by the H-bridge drive circuit handle after the coil 31 is inputted it is described
Driving current.
After the difference value compared by predrive unit reception PID unit, the electric current of driving output respective direction, i.e.,
Current camera lens 20 will reach the electric current of target location needs, and determine output current direction by H-bridge drive circuit, if that is,
Through more than target location, it is necessary to which camera lens 20 is moved back, otherwise continuation drives camera lens 20 is outer to move.
It is pointed out that in the present invention, being driven to the PID unit, compensating unit, predrive unit and H bridges
Circuit is not specifically limited, and can be fed back the induced-current of Hall element 11 with other circuit structures in the present invention
The physical location of camera lens 20 is controlled, the target location that control unit 12 is initially required the arrival of camera lens 20 is reached.
In the present invention, control unit 12 can also be used by receiving the induced-current of Hall element 11, with camera lens 20
The electric current that Hall element 11 should feed back when reaching target location is made comparisons, and then inputs electricity for the coil 31 of voice coil motor 30
Stream, the identical position of the induced-current of feedback when electric current and camera lens 20 the arrival target location that Hall element 11 feeds back
Realize auto-focusing.
In addition, the embodiment of the present invention additionally provides a kind of electronic equipment, including camera module as described above.
Because the electronic equipment includes camera module as described above, and the Hall element of camera module is arranged on PCB electricity
On the plate of road, without as being arranged in the prior art inside voice coil motor, reducing the technology difficulty of voice coil motor so that sound
The processing yields of coil motor gets a promotion.Hall element is set in PCB simultaneously, not influenceed to the magnetic through vomiting
While the sensing of property component, hardly increase technology difficulty.So, the manufacturing cost of electronic equipment is due to the system of camera module
Cause this reduction and reduce accordingly.
In summary, camera module and electronic equipment provided in an embodiment of the present invention, by the way that Hall element is arranged on
In PCB, it is connected with control unit, only need to be by drawing because Hall element is no longer provided separately within inside voice coil motor
Pin is connected with control unit so that the processing technology of voice coil motor becomes simple, improves yields so that camera module and
The manufacturing cost of electronic equipment is reduced.
Camera module provided by the present invention and electronic equipment are described in detail above.Tool used herein
Body example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands this hair
Bright method and its core concept.It should be pointed out that for those skilled in the art, not departing from the present invention
On the premise of principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention
It is required that protection domain in.
Claims (7)
1. a kind of camera module, it is characterised in that including PCB and the Hall element being arranged in the PCB,
The Hall element is connected with the control unit being arranged in the PCB, and is arranged on camera lens according to what sensing was subject to
Magnetic part position output induced-current, described control unit according to the induced-current control be output to voice coil motor
The driving current of coil, controls the position of the camera lens.
2. camera module as claimed in claim 1, it is characterised in that the magnetic part is the ambipolar magnet of strip.
3. camera module as claimed in claim 2, it is characterised in that also including the guide rail ball for being arranged on the camera lens, for controlling
The moving direction of the camera lens is made, the camera lens is vertically moved.
4. camera module as claimed in claim 3, it is characterised in that also including the memory cell for being arranged on the PCB,
The memory cell is connected with described control unit, for preserve described control unit control information and register it is initial
Arranges value.
5. camera module as claimed in claim 4, it is characterised in that also including compensating than unit, the compensating unit and PID are mono-
Member, the compensating unit is connected with the Hall element, and the PID unit is connected with the compensating unit, described control unit,
For the mirror sensed to the target location instruction of the camera lens with the Hall element exported according to described control unit
The position of head obtains and exports difference value.
6. camera module as claimed in claim 5, it is characterised in that also including the output end with the PID unit be connected it is pre-
Driver element and the H-bridge drive circuit being connected with the predrive unit, the predrive element circuit are exported according to the PID
Difference value driving output correspondence direction electric current, and by the H-bridge drive circuit handle after to the coil input it is described drive
Streaming current.
7. a kind of electronic equipment, it is characterised in that including camera module as claimed in any one of claims 1 to 6.
Priority Applications (1)
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CN201710357912.8A CN107197124A (en) | 2017-05-19 | 2017-05-19 | A kind of camera module and electronic equipment |
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CN201710357912.8A CN107197124A (en) | 2017-05-19 | 2017-05-19 | A kind of camera module and electronic equipment |
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CN201710357912.8A Pending CN107197124A (en) | 2017-05-19 | 2017-05-19 | A kind of camera module and electronic equipment |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107797488A (en) * | 2017-09-30 | 2018-03-13 | 维沃移动通信有限公司 | A kind of displacement control system and its control method, mobile terminal |
CN107820168A (en) * | 2017-11-17 | 2018-03-20 | 瑞声科技(南京)有限公司 | The control method and electronic equipment of electronic equipment |
CN111182175A (en) * | 2018-11-13 | 2020-05-19 | 北京小米移动软件有限公司 | Camera module and electronic equipment |
CN112616002A (en) * | 2020-12-30 | 2021-04-06 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN112616003A (en) * | 2020-12-30 | 2021-04-06 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN113873170A (en) * | 2021-10-29 | 2021-12-31 | 上海艾为电子技术股份有限公司 | Optical anti-shake control system and method and electronic equipment |
CN114577099A (en) * | 2020-11-16 | 2022-06-03 | 深圳市万普拉斯科技有限公司 | Position detection system, lens, zooming method and terminal |
CN115086646A (en) * | 2022-06-09 | 2022-09-20 | 昆山丘钛微电子科技股份有限公司 | Anti-shake control method and system, test fixture and handheld device |
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CN101959012A (en) * | 2009-07-17 | 2011-01-26 | 鸿富锦精密工业(深圳)有限公司 | Camera module |
CN105980921A (en) * | 2014-02-12 | 2016-09-28 | 富士胶片株式会社 | Imaging module and electronic device |
CN205750072U (en) * | 2016-05-19 | 2016-11-30 | 深圳市世尊科技有限公司 | Autofocus motor for camera module |
CN106200211A (en) * | 2015-05-28 | 2016-12-07 | 三星电机株式会社 | Actuator drive apparatus and driving method, camera model and electronic equipment |
CN106468846A (en) * | 2015-08-14 | 2017-03-01 | 三星电机株式会社 | Actuator drive and the camera model including actuator drive |
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Patent Citations (5)
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CN101959012A (en) * | 2009-07-17 | 2011-01-26 | 鸿富锦精密工业(深圳)有限公司 | Camera module |
CN105980921A (en) * | 2014-02-12 | 2016-09-28 | 富士胶片株式会社 | Imaging module and electronic device |
CN106200211A (en) * | 2015-05-28 | 2016-12-07 | 三星电机株式会社 | Actuator drive apparatus and driving method, camera model and electronic equipment |
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CN205750072U (en) * | 2016-05-19 | 2016-11-30 | 深圳市世尊科技有限公司 | Autofocus motor for camera module |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107797488A (en) * | 2017-09-30 | 2018-03-13 | 维沃移动通信有限公司 | A kind of displacement control system and its control method, mobile terminal |
CN107820168A (en) * | 2017-11-17 | 2018-03-20 | 瑞声科技(南京)有限公司 | The control method and electronic equipment of electronic equipment |
CN111182175B (en) * | 2018-11-13 | 2022-02-15 | 北京小米移动软件有限公司 | Camera module and electronic equipment |
CN111182175A (en) * | 2018-11-13 | 2020-05-19 | 北京小米移动软件有限公司 | Camera module and electronic equipment |
US11089194B2 (en) | 2018-11-13 | 2021-08-10 | Beijing Xiaomi Mobile Software Co., Ltd. | Pop-up camera module and electronic device |
CN114577099B (en) * | 2020-11-16 | 2023-11-28 | 深圳市万普拉斯科技有限公司 | Position detection system, lens, zooming method and terminal |
CN114577099A (en) * | 2020-11-16 | 2022-06-03 | 深圳市万普拉斯科技有限公司 | Position detection system, lens, zooming method and terminal |
CN112616002A (en) * | 2020-12-30 | 2021-04-06 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN112616003B (en) * | 2020-12-30 | 2022-05-06 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN112616002B (en) * | 2020-12-30 | 2022-07-15 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN112616003A (en) * | 2020-12-30 | 2021-04-06 | 维沃移动通信有限公司 | Camera module and electronic equipment |
CN113873170A (en) * | 2021-10-29 | 2021-12-31 | 上海艾为电子技术股份有限公司 | Optical anti-shake control system and method and electronic equipment |
CN113873170B (en) * | 2021-10-29 | 2023-09-01 | 上海艾为电子技术股份有限公司 | Optical anti-shake control system and method and electronic equipment |
CN115086646A (en) * | 2022-06-09 | 2022-09-20 | 昆山丘钛微电子科技股份有限公司 | Anti-shake control method and system, test fixture and handheld device |
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Application publication date: 20170922 |