CN109089033A - Camera module - Google Patents
Camera module Download PDFInfo
- Publication number
- CN109089033A CN109089033A CN201811227549.9A CN201811227549A CN109089033A CN 109089033 A CN109089033 A CN 109089033A CN 201811227549 A CN201811227549 A CN 201811227549A CN 109089033 A CN109089033 A CN 109089033A
- Authority
- CN
- China
- Prior art keywords
- voice coil
- coil motor
- ois
- control driver
- hall sensors
- 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.)
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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
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
-
- 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
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Abstract
The present invention discloses a kind of camera module comprising RFPC plate；Gyroscope, OIS set on RFPC plate control driver and voice coil motor part；Voice coil motor part includes voice coil motor and the shell that is sheathed on outside voice coil motor；Gyroscope and voice coil motor are connect with OIS control driver respectively；Camera lens in voice coil motor, camera lens are leaked in outside shell；And two Hall sensors being set in the housing；Two Hall sensors are located at the two sides of voice coil motor；Two Hall sensors are connect with OIS control driver.The setting that present invention passes through Hall sensor, two displacement parameters that can mutually confirm of driver are controlled to OIS, and the small displacement measured with gyroscope compares so that camera lens because shake generate bit shift compensation it is more accurate, it is ensured that shooting picture it is clear.
Description
Technical field
The present invention relates to camera technical fields, and in particular, to a kind of camera module.
Background technique
The principle of OIS (Optical image stabilization), the stabilization in camera lens shooting are camera lens quilts
Magnetic force package, is in suspended state, and when shooting photo shake, gyroscope detects small movement, then by the letter of shake
Breath is converted into electric signal and gives OIS control driver, and driver calculates the displacement for needing to compensate immediately, then passes through driving IC
Driving voice coil motor control camera lens movement come compensate shake caused by image, with ensure shake will not filming image effect,
Hall sensor, which has, simultaneously feeds back to OIS control driver the location information of camera lens, to form closed-loop control.Wherein, sound
Coil motor to the driving of camera lens is carried out by coil and the magnetic field interaction of magnet generation, wherein magnet is fixed
, coil be it is movable, the magnetic field of magnet forms active force to coil when coil is powered, and then realizes driving to camera lens, and
Hall sensor is the small measurement that camera lens is carried out according to the changes of magnetic field of magnet, additional feedback operation, so that compensation displacement
It is accurate as far as possible, and Hall sensor in the prior art is independent one, and the single side of magnet is arranged in detect
The changes of magnetic field of magnet, when camera lens generates small shifting amount, the variation in magnetic field is very subtle, other electricity in camera module
Electric current flowing can generate small magnetic field in subcomponent, these magnetic fields can interfere the measurement of Hall sensor, and then lead
Cause the detection of single Hall sensor small displacement error occur, for example, application number CN201420820058.6 and
The relevant patent of stabilization camera disclosed in inside two patents of CN201420536455.0 does not consider this problem.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of camera module.
A kind of camera module disclosed by the invention includes RFPC plate；
Gyroscope, OIS set on RFPC plate control driver and voice coil motor part；Voice coil motor part includes voice coil motor
And it is sheathed on the shell outside voice coil motor；Gyroscope and voice coil motor are connect with OIS control driver respectively；
Camera lens in voice coil motor, camera lens are leaked in outside shell；And
Two Hall sensors being set in the housing；Two Hall sensors are located at the two sides of voice coil motor；Two
Hall sensor is connect with OIS control driver.
According to an embodiment of the present invention, two Hall sensors are located at the opposite two sides of voice coil motor.
According to an embodiment of the present invention, two Hall sensors are located at the adjacent two sides of voice coil motor.
It according to an embodiment of the present invention, further include two miniature magnet；
Two miniature magnet are respectively arranged on the coil brace of voice coil motor, and opposite with two Hall sensors respectively
It answers.
According to an embodiment of the present invention, OIS controls driver by driving IC to connect with voice coil motor.
The camera module of the application passes through the setting of two Hall sensors, and controlling driver two to OIS can be mutual
The displacement parameter of confirmation, and the small displacement measured with gyroscope compares, so that camera lens is mended because of the displacement that shake generates
Repay more accurate, it is ensured that shooting picture it is clear.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of camera module in the present embodiment；
Fig. 2 is voice coil motor, Hall sensor and miniature magnet arrangement schematic diagram in the present embodiment；
Fig. 3 is voice coil motor, Hall sensor and miniature magnet arrangement schematic diagram in another embodiment.
Specific embodiment
Multiple embodiments of the invention will be disclosed with schema below, as clearly stated, the details in many practices
It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Also
It is to say, in some embodiments of the invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema,
Some known usual structures and component will be painted it in the drawings in simply illustrative mode.
It is to be appreciated that the directional instruction such as up, down, left, right, before and after ... of institute is only used in the embodiment of the present invention
Relative positional relationship, the motion conditions etc. in the case where a certain particular pose is as shown in the picture between each component are explained, if this is specific
When posture changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, not especially censure
The meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique term
Or operation, it is not understood to indicate or imply its relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.In addition, each
Technical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the art
Plinth will be understood that the combination of this technical solution is not present when conflicting or cannot achieve when occurs in the combination of technical solution,
Also not the present invention claims protection scope within.
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
Embodiment 1
Referring to Figures 1 and 2, Fig. 1 is the structural schematic diagram of camera module in the present embodiment, and Fig. 2 is the present embodiment middle pitch
Coil motor, Hall sensor and miniature magnet arrangement schematic diagram.Camera module includes RFPC plate 1, gyro in the present embodiment
Instrument 2, OIS control driver 3, voice coil motor part 4, camera lens 5, Hall sensor 6, and wherein the quantity of Hall sensor 6 is two.
RFPC plate 1, i.e., the wiring board of soft or hard combination is a kind of novel wiring board, hardboard part as pcb board,
With certain thickness and intensity, mountable electronic component simultaneously bears certain mechanical force, and soft board part makes wiring board locally can be with
Bending, may be implemented three-dimensional installation；Camera module in the present embodiment is just allowing for camera mould using Rigid Flex
Group will appear three-dimensional installation scenario in specific installation application, for example, smart phone, the dress of the smart electronics product such as tablet computer
Match, while it has to be ensured that remaining electronic component of camera module assembly.It is corresponding that camera module is printed on RFPC plate 1
Control circuit, convenient for the connecting move control of each electronic component on RFPC plate 1.
Gyroscope 2, OIS control driver 3 and voice coil motor part 4 are set on RFPC plate 1, specifically, 2 He of gyroscope
OIS control driver 3 is assemblied in side by side on RFPC plate 1, and voice coil motor part 4 is assemblied in gyroscope 2 and OIS controls 3 liang of driver
The side of person；Gyroscope 2 is connect with OIS control driver 3, is connected specifically, the two is formed by the printed circuit of RFPC plate 1
It connects；When shooting photo, when there is fine jitter situation, gyroscope 2 is used to detect these small displacements, and these
Small displacement is transferred to OIS control driver 3.Voice coil motor part 4 includes voice coil motor 41 and shell 42, and shell 42 assembles
It on RFPC plate 1, and is sheathed on outside voice coil motor 41, voice coil motor 41 is connect with OIS control driver 3 respectively, specifically, sound
Coil motor 41 controls driver 3 with OIS by the driving IC (drawing does not provide) on RFPC plate 1 and connect, and driving IC is set to shell
41 inside, it is possible to reduce the volume of entire camera module, driving IC cooperation OIS control driver 3 realize electric current together
Accurate control.Camera lens 5 is set in voice coil motor 4, and is leaked in outside shell 42, and camera lens 5 is used for image taking, specifically, camera lens 5 is
The AF module group lens of auto-focusing can be achieved, camera lens 5 is set on the coil brace (not providing mark in figure) of voice coil motor 4, when
When the coil of voice coil motor 4 passes through electric current, hot-wire coil will receive active force in magnetic field, and the magnet of voice coil motor 4 (is in figure
Provide mark) active force is generated to coil, and then realize the movement of camera lens 5, the cutting magnetic field movement of 4 coil of voice coil motor can draw
The variation of magnetizing field.Two Hall sensors 6 are set in shell 42；Two Hall sensors 6 are located at 4 phase of voice coil motor
Pair two sides, two Hall sensors 6 with OIS control driver 3 connect, specifically, Hall sensor 6 pass through RFPC plate 1
Printed circuit and OIS control driver 3 connect；Hall sensor 6 is by the variation in magnetic field come 5 micro-displacement of detector lens
Amount, and transmit the information of small displacement and control driver 3 to OIS.
The operation principles of the application are as follows: when camera module jitter phenomenon occurs when shooting, gyroscope 2 is detected
The small displacement of shake is simultaneously transferred to OIS control driver 3, and OIS controls driver 3 and calculated according to the small displacement of shake
The displacement for needing to compensate out, then OIS controls driver 3 and controls the electric current of 4 coil of voice coil motor by driving IC to control
The movement of camera lens 5 completes the movement of camera lens 5 to complete the compensation of small displacement, and Hall sensor 6 can calculate camera lens at this time
5 actual displacement amount controls driver 3 to feed back OIS, to realize accurate control, and when only one Hall sensor 6,
The detection of changes of magnetic field is carried out positioned at the side of voice coil motor 4, the variation in magnetic field at this time is easy to receive remaining electronics in mould group
Magnetic interference caused by curent change in component, by the way that two Hall sensors 6 are arranged, in the not ipsilateral of voice coil motor 4
While being detected, two groups of data are transferred to OIS control driver 3, and OIS control driver 3 is detected according to two Hall sensors 6
Change in displacement mutually confirmed, and then realize precise measurement detection so that OIS control driver 3 displacement supplement more
Accurately.
- Fig. 2 referring to Fig.1 is answered, camera module further includes two miniature magnet 7 in the present embodiment, and two miniature magnet 7 divide
She Yu not be on the coil brace of voice coil motor 4, two miniature magnet 7 are corresponding with two Hall sensors 6 respectively, specifically,
Two miniature magnet 7 are permanent magnet.Two miniature magnet 7 can be moved with the movement of the coil of voice coil motor 4, and two suddenly
The changes of magnetic field of your sensor 6 two miniature magnet 7 of used detection carries out detection small displacement, the small displacement be also with
The displacement for the camera lens 5 that 4 coil of voice coil motor moves together；Benefit by the way that miniature magnet 7 is additionally arranged is, permanent magnet
Caused changes of magnetic field is more stable regular after changes of magnetic field is powered relative to coil, and two Hall sensors 6 are micro- by detecting
The changes of magnetic field of type magnet 7, obtain data it is more accurate, moreover, because permanent magnet changes of magnetic field be it is regular, by
It when to other magnetic interferences, can be easy to filter out the shape in remaining interference magnetic field, and keep the changes of magnetic field shape of its own, suddenly
Your sensor 6 can obtain the test data of more accurate small displacement by the miniature magnet 7 of monitoring permanent magnet.
Embodiment 2
Referring to Figure 1 and Figure 3, Fig. 3 is voice coil motor in another embodiment, Hall sensor and the signal of miniature magnet arrangement
Figure.Camera module and a upper embodiment in the present embodiment the difference is that, two Hall sensors 6 are located at voice coil
The adjacent two sides of motor 4.
Upper is only embodiments of the present invention, is not intended to restrict the invention.To those skilled in the art,
The invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention, equivalent replacement,
Improve etc., it should all be included within scope of the presently claimed invention.
Claims (5)
1. a kind of camera module characterized by comprising
RFPC plate (1)；
Gyroscope (2), OIS set on the RFPC plate (1) control driver (3) and voice coil motor part (4)；The voice coil horse
Include voice coil motor (41) up to part (4) and is sheathed on the shell (42) of the voice coil motor (41) outside；The gyroscope (2) with
And voice coil motor (41) is connect with OIS control driver (3) respectively；
Camera lens (5) in voice coil motor (4), the camera lens (5) are leaked in the shell (42) outside；And
Two Hall sensors (6) in shell (42)；Two Hall sensors (6) are located at the voice coil horse
Up to the two sides of (4)；Two Hall sensors (6) connect with OIS control driver (3).
2. camera module according to claim 1, which is characterized in that two Hall sensors (6) are located at
The opposite two sides of the voice coil motor (4).
3. camera module according to claim 1, which is characterized in that two Hall sensors (6) are located at
The adjacent two sides of the voice coil motor (4).
4. camera module according to claim 1, which is characterized in that it further includes two miniature magnet (7)；
Two miniature magnet (7) are respectively arranged on the coil brace of the voice coil motor (4), and pass respectively with two Halls
Sensor (6) is corresponding.
5. camera module according to claim 1, which is characterized in that OIS control driver (3) passes through driving IC
It is connect with the voice coil motor (41), driving IC is set to the inside of the shell (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227549.9A CN109089033A (en) | 2018-10-22 | 2018-10-22 | Camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227549.9A CN109089033A (en) | 2018-10-22 | 2018-10-22 | Camera module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109089033A true CN109089033A (en) | 2018-12-25 |
Family
ID=64844024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227549.9A Pending CN109089033A (en) | 2018-10-22 | 2018-10-22 | Camera module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109089033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382144A (en) * | 2021-06-09 | 2021-09-10 | 重庆市天实精工科技有限公司 | Anti-shake camera module, camera anti-shake system and mobile terminal of sensor displacement formula |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204119344U (en) * | 2014-09-18 | 2015-01-21 | 深圳市四季春科技有限公司 | A kind of optical anti-vibration moves camera module |
| CN204462606U (en) * | 2014-12-31 | 2015-07-08 | 佛山航研精密电子有限公司 | Optic axis hang down improvement anti-hand shaking voice coil motor |
| CN204679702U (en) * | 2015-04-30 | 2015-09-30 | 南昌欧菲光电技术有限公司 | Camera module and camera head |
| CN107615160A (en) * | 2015-05-29 | 2018-01-19 | 三美电机株式会社 | Actuator, camara module and camera carrying device |
| CN108024068A (en) * | 2016-11-03 | 2018-05-11 | 华为技术有限公司 | Dual camera equipment and terminal device |
| CN108353131A (en) * | 2016-10-17 | 2018-07-31 | 华为技术有限公司 | Obtain the method and terminal device of image |
| CN209151240U (en) * | 2018-10-22 | 2019-07-23 | 惠州市桑莱士智能科技股份有限公司 | Camera module |
-
2018
- 2018-10-22 CN CN201811227549.9A patent/CN109089033A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204119344U (en) * | 2014-09-18 | 2015-01-21 | 深圳市四季春科技有限公司 | A kind of optical anti-vibration moves camera module |
| CN204462606U (en) * | 2014-12-31 | 2015-07-08 | 佛山航研精密电子有限公司 | Optic axis hang down improvement anti-hand shaking voice coil motor |
| CN204679702U (en) * | 2015-04-30 | 2015-09-30 | 南昌欧菲光电技术有限公司 | Camera module and camera head |
| CN107615160A (en) * | 2015-05-29 | 2018-01-19 | 三美电机株式会社 | Actuator, camara module and camera carrying device |
| CN108353131A (en) * | 2016-10-17 | 2018-07-31 | 华为技术有限公司 | Obtain the method and terminal device of image |
| CN108024068A (en) * | 2016-11-03 | 2018-05-11 | 华为技术有限公司 | Dual camera equipment and terminal device |
| CN209151240U (en) * | 2018-10-22 | 2019-07-23 | 惠州市桑莱士智能科技股份有限公司 | Camera module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382144A (en) * | 2021-06-09 | 2021-09-10 | 重庆市天实精工科技有限公司 | Anti-shake camera module, camera anti-shake system and mobile terminal of sensor displacement formula |
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