CN106842487A - Voice coil motor, lens driver and the electronic equipment with camera - Google Patents
Voice coil motor, lens driver and the electronic equipment with camera Download PDFInfo
- Publication number
- CN106842487A CN106842487A CN201710071524.3A CN201710071524A CN106842487A CN 106842487 A CN106842487 A CN 106842487A CN 201710071524 A CN201710071524 A CN 201710071524A CN 106842487 A CN106842487 A CN 106842487A
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- CN
- China
- Prior art keywords
- magnet
- group
- emission
- voice coil
- coil motor
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The present invention provides a kind of voice coil motor to be included：At least first group magnet being set up in parallel and second group of magnet, the first coil of correspondence first group of magnet and the second coil of correspondence second group of magnet, first group of magnet is annularly set and with first surface of emission, second group of magnet is annularly set and with second surface of emission, the direction of first surface of emission is opposite with the direction of second surface of emission, reciprocation two is produced to first group of magnet and second group of magnet when the first coil and second coil electricity and first is produced, second driving force, so as to drive first and second coil to move up and down.The voice coil motor small volume, efficiency high, the electronic equipment for being adapted to twin-lens and double optics stabilization (OIS) driving.
Description
Technical field
Driven the present invention relates to electronic device field, more particularly to a kind of voice coil motor, the lens with the voice coil motor
Device and the electronic equipment with the lens driver.
Background technology
Voice coil motor has high frequency response, high-precision feature, and it is mainly used in mobile phone camera, main operational principle
Be in a permanent-magnetic field, by the stretch position for changing the DC current size of motor interior loop to control spring leaf, from
And drive and move up and down.Mobile phone camera is widely used voice coil motor and realizes auto-focusing (AF) function, by voice coil motor
The position of camera lens can be adjusted, clearly image is presented.
Current dual camera has turned into the standard configuration of the intelligent mobile terminal such as mobile phone instantly, and two voice coil motors pass through other portions
Part is combined together, and makes two each self-driven corresponding camera lenses of voice coil motor.But it has that a technical bottleneck is exactly mesh
The design of preceding optical anti-vibration (OIS) voice coil motor (VCM), is mostly the translation mode for taking moving-magnetic type.If two OIS
When VCM puts together, when wherein one VCM is moved by electric current drive magnet group, another of side can be interfered with also in fortune
Dynamic group of magnets.So the in the market of current dual camera, is hardly visible the product of double OIS.
Although domestic some people propose to solve this problem with two DYN dynamic VCM, the drive that coil is moved
Flowing mode, can cause auto-focusing (AF) coil, wherein while near the surface of emission of magnet, another side is but away from the transmitting of magnet
Face so that the stress of AF coils is inconsistent, it is high low on one side on one side to cause to occur during AF coil movements camera lens, produces inclined coupling
Problem.Because dual camera is that the technology synthesized using two images developed, so two depth of parallelisms of camera lens optical axis
It is extremely important, if drive when it is uncontrollable if, bigger problem can be caused like that.
It would therefore be highly desirable to a kind of improved voice coil motor, lens driver and electronic equipment are overcoming drawbacks described above.
The content of the invention
It is an object of the invention to provide a kind of small volume, efficiency high, it is adapted to the voice coil motor that twin-lens drives.
Another object of the present invention is to providing a kind of small volume, efficiency high, being adapted to the lens driving dress that twin-lens drives
Put.
It is still another object of the present invention to provide a kind of small volume, efficiency high, it is adapted to the electronic equipment that twin-lens drives.
To achieve the above object, the voice coil motor that the present invention is provided includes：At least first group magnet being set up in parallel and
Second coils of two groups of magnet, the first coils of correspondence first group of magnet and correspondence second group of magnet, described the
One group of magnet is annularly set and with first surface of emission, and second group of magnet is annularly set and with second surface of emission,
The direction of the direction of first surface of emission and second surface of emission is conversely, when the first coil and second coil are logical
Reciprocation is produced to first group of magnet and second group of magnet when electric and the first and second driving forces are produced, so as to drive
Dynamic first and second coil moves up and down.
Compared with prior art, voice coil motor of the invention uses two groups while relative first, second group of magnet is along optical axis
The first coil of up and down motion and the second coil are realizing automatic focusing function.Most of all, two groups of configuration modes of magnet
For the transmitting of one of which magnet is inward-facing, the transmitting of another group of magnet is faced out, so that the magnetic field for providing voice coil motor uses
Efficiency, realizes that two groups of magnet are moved simultaneously, therefore the problem of magnetic interference will not occur between two groups of magnet.And, the sound
Coil motor small volume, efficiency high, low cost, adapt to the electronic equipment of twin-lens or many camera lenses, such as thin camera, twin-lens hand
Machine etc..
It is preferred that also include the tertiary coil below first group of magnet and second group of magnet, described the
Three-winding is used to drive first group of magnet to make the consistent translational motion in direction with second group of magnet, so as to realize optics
Stabilization function.
It is preferred that first group of magnet includes multiple the first independent magnet, second group of magnet includes multiple only
The second vertical magnet, wherein adjacent first magnet in the middle of first group of magnet and second group of magnet
The second magnet described with one is two independent magnet units or the shared magnet unit of an integral type.
It is preferred that each first magnet and each second magnet are rectangular strip magnet, each first magnet
Inwardly, second transmitting of each second magnet is faced outwardly first surface of emission.
Alternatively, first magnet has first surface of emission and adjacent with first surface of emission at least described in one
Left and right side, the left and right side is at an acute angle with the south poles line direction of first magnet, the second magnet at least described in one
With second surface of emission and the left and right side adjacent with second surface of emission, the left and right side and second magnetic
The south poles line direction of iron is at an acute angle.It is preferred that multiple tertiary coils are located at first magnet and second magnet
Make the consistent translational motion in direction with second group of magnet to drive first group of magnet in the side of left surface or right flank.
It is preferred that the axis direction and first surface of emission of the heart yearn winding of the first coil and second coil
It is parallel with second surface of emission, axis direction and the left side for being located at adjacent side of the winding of the heart yearn of the tertiary coil
Face or the right flank are vertical.
It is preferred that first group of magnet and second group of magnet are fixed by a magnet bearing.
The present invention provides a kind of lens driver, including carries the lens bearing of an at least lens and for driving
The voice coil motor of lens bearing is stated, the voice coil motor is as described above.
The present invention provides a kind of electronic equipment with camera, and the camera has an at least lens and for driving
The lens driver of the lens is moved, the lens driver has voice coil motor as described above.
Brief description of the drawings
Fig. 1 is the stereogram of the first embodiment of voice coil motor of the present invention, and its displaying one has automatic focusing function
Voice coil motor.
Fig. 2 is position and the polarity schematic diagram of the magnet of the voice coil motor shown in Fig. 1.
Fig. 3 is the stereogram of the second embodiment of voice coil motor of the present invention, and its displaying one has auto-focusing and optics
The voice coil motor of stabilization function.
Fig. 4 is the stereogram of the 3rd embodiment of voice coil motor of the present invention, and it shows that another has auto-focusing and light
Learn the voice coil motor of stabilization function.
Fig. 5 is the stereogram of the first embodiment of lens driver of the present invention.
Fig. 6 is the sectional view of Fig. 5.
Fig. 7 is the exploded view of the second embodiment of lens driver of the present invention.
Specific embodiment
The several different most preferred embodiments of the present invention are illustrated below with reference to the accompanying drawings, wherein identical label generation in different figures
Table identical part.Essence of the invention is that provide a kind of small volume, efficiency high, be adapted to twin-lens drive voice coil motor and
Its application.
As shown in figure 1, the first embodiment of voice coil motor of the invention 100 includes：First group of magnet 110 being set up in parallel
With second group of magnet 120, the line of the first coil being respectively arranged in first group of magnet 110 and second group of magnet 120 130 and second
Circle 140, when 130 and second coil of first coil 140 is powered, can respectively to first group of magnet 110 or second group of magnet 120
Reciprocation is produced, and produces the first and second driving forces, so as to drive the coil of the first coil 130 and second about 140
Motion..
Specifically, incorporated by reference to Fig. 1 and Fig. 2, first group of magnet 110 and second group of magnet 120 are annularly set, at this
In embodiment, first group of magnet 110 is surround by multiple the first independent magnet 111,112,113,114 and constituted, second group of magnet
120 by multiple the second independent magnet 114,115,116,117 around constituting, wherein being two positioned at a middle magnet 114
Group magnet share, share same magnet 114 benefit can with optical axis distance between reduces cost and two camera lenses that further so that
Reach more preferable optical effect.In other examples, or two independent magnet.Wherein, first group of magnet 110
In the surface of emission direction with second group of direction of the surface of emission of magnet 120 conversely, for example, the first magnet 111,112,113,
Inwardly, the surface of emission (N) of the second magnet 114,115,116,117 is outwardly for 114 surface of emission (N).In the present embodiment, two groups of magnet
In each magnet be rectangular strip magnet, alternatively, the ringshaped magnet of first group of magnet 110 or radial magnetizing, second
The ringshaped magnet of group magnet 120 or radial magnetizing.
First group of magnet 110 and second group of magnet 120 are fixed by magnet bearing 190, it is preferred that the magnet bearing 190 is in
Integral structure, it can be made up of the yoke of magnetic conduction, or be made of non-magnetic material and also may be used.Specifically, first group of magnet 110
Inner side with second group of magnet 120 is located at magnet bearing 190, for example, be fixed by modes such as bondings.
First coil 130 is located at first group of inner side of magnet 110, and the second coil 140 is located within second group of magnet 120
Side, wherein, the axis direction of the heart yearn winding of first coil 130 is parallel with the surface of emission N of first group of magnet 110, the second coil
The axis direction of 140 heart yearn winding is parallel with the surface of emission N of second group of magnet 120, that is, the line of first coil 130 and second
The axis direction of the heart yearn winding of circle 140 is in the same direction with optical axis Z.When first coil 130 is powered, friendship is produced to first group of magnet 110
During interaction, the First Driving Force of Z-direction is produced, promote the camera lens in first coil 130 to move up and down.When the second coil 140
It is powered, when producing reciprocation to second group of magnet 120, can also produces the second driving force of Z-direction, promotes the second coil 140
Interior camera lens, moves up and down independently along optical axis and drives, so as to realize two camera lenses independently auto-focusing in application.
As shown in figure 3, the voice coil motor 100 ' is controlled for three axles, while having the sound of auto-focusing and optical anti-vibration function
Coil motor.Specifically, configuring tertiary coil on the basis of voice coil motor 100 in upper one embodiment to realize voice coil motor
Translational motion.Specifically, the tertiary coil 150 is configured in the lower section of first group of magnet 110 and second group of magnet 120.Compared with
Goodly, a coil unit 151, the heart yearn of each coil unit 151 are respectively configured in the lower section of the surface of emission of each magnet 111~117
The axis direction of winding is mutually perpendicular to the surface of emission of each magnet 111~117.By by the driving current in tertiary coil 150
With the reciprocal force produced by each magnet 111~117, voice coil motor 100 ' can be concurrently or separately promoted to make translational motion.Specifically,
The tertiary coil 150 is divided into two groups with different directions driving force, and one of which coordinates to drive with first group of magnet 110
First group of magnet 110 makees translational motion, and another group coordinates to drive second group of magnet 120 to make translation fortune with second group of magnet 120
It is dynamic, equally, positioned at middle coil unit for two groups of coils are shared.Two groups of magnet 110 thus, being fixed by magnet bearing 190,
120 make unidirectional translational motion simultaneously, so as to realize two optical anti-vibrations of camera lens in application.
In another embodiment of voice coil motor, become the thickness of voice coil motor by the optimal design-aside of tertiary coil
It is small, so as to cater to the demand of light and thin type.As shown in figure 4, the voice coil motor 100 in the present embodiment " control of three axles is similarly, while
Voice coil motor with auto-focusing and optical anti-vibration function, be with upper embodiment difference：Each magnet 111 '~
117 ' and the configuration of tertiary coil 150 '.Specifically, the first magnet 111 ', 112 ' and 113 ' of first group of magnet 110 ' has
The prism adjacent with surface of emission N, specifically, the prism is at an acute angle with the south poles line direction of magnet, that is, magnet
One side sectional view is trapezoidal, rather than the rectangle in first embodiment.Similarly, second group of second magnetic of magnet 120 '
Iron, 115 ', 116 ' and 117 ' equally have the prism adjacent with surface of emission N, specifically, the south poles of the prism and magnet
Line direction is at an acute angle.In Fig. 4, the shared magnet 114 ' in centre can not have inclined-plane, this be due to the present embodiment in the 3rd
Coil 150 ' is not set in middle part.However, in other examples, the magnet 114 ' equally can be set inclined-plane.
It is preferred that tertiary coil 150 ' sets first group of magnet 110 ' and second group of the four of magnet 120 ' corner, and folder
It is located between first group of left and right side of adjacent two magnet of magnet 110 ', and is folded in the adjacent of the second magnet 120 '
Two left and right sides of magnet between.The axis direction of the heart yearn winding of each tertiary coil 150 ' and the surface of emission N phases of magnet
Hand over, and it is vertical with adjacent magnet left and right side.By magnetic field and corner that first group of side of the magnet of magnet 110 ' is flowed back
Tertiary coil 150 ' in the reciprocal force that produces of driving current, first group of magnet 110 can be promoted to be moved in X/Y plane, similarly,
Produced by driving current in tertiary coil 150 ' of the magnetic field with corner that second group of side of the magnet of magnet 120 ' is flowed back
Reciprocal force, second group of magnet 120 can be promoted to be moved in X/Y plane.
Fig. 5,6,7 are voice coil motor 100 " it is assembled into stereogram, sectional view and the exploded view of lens driver 200.
The lens driver 200 is except above-mentioned voice coil motor 100 " in addition to, also including with voice coil motor 100 " match
Lens bearing 211,212, gluing lens bearing 211,212 shell fragment 221,222, be arranged on around lens bearing and and shell fragment
Connected insulator 229 and the base 228 being arranged under lens bearing, two lens 231,232 are arranged on lens bearing
211st, in 212, it is covered in the housing 227 of top.The insulator 229 can be used to prevent electric current to be short-circuited when driving, housing
227 be used for protect voice coil motor 100 " etc. element to prevent falling into for dust.Pass through between base 228 and shell fragment 221,222
Many strings of a musical instrument 241 realize suspention, and limit magnet bearing and can only be moved on X/Y plane.The effect of the string of a musical instrument 241 is except suspending it in midair
Outward, also reside in and provide driving current to realize auto-focusing for the coil on both sides.Alternatively, the lens bearing 211,212 is outstanding
Hang supporting way and be not limited to this, also can otherwise as slide rail or the floating mode of magnetic are realized.And the suspention of magnet bearing
Mode is also not limited to four strings of a musical instrument 241, also can otherwise as the string of a musical instrument of more than four or the ball of more than come
Realize, will not be described in detail herein.
When first coil 130, the second coil 140 are powered, the driving force of generation causes in lens bearing 211,212 two
Individual lens 231,232, each make (Z-direction) up and down and move, to realize the function of auto-focusing along its optical axis direction.Work as tertiary coil
150 ' when being applied in electric current, and its driving force for producing also can simultaneously be such that the image of focusing is moved up in the side of XY, so as to reach
The effect of optical anti-vibration.
Because the voice coil motor 100 ' in lens driver of the invention 200 is using two groups of first group of magnetic of motion simultaneously
Iron 110 ' and second group of magnet 120 ', two groups produce reciprocation to first, second group of magnet 110 ', 120 ' respectively, along optical axis
The coil 140 of first coil 130 and second of self-movement, and drive the translational motion of first, second group of magnet 110 ', 120 '
Tertiary coil 150 ', realizes the function of auto-focusing and optical anti-vibration, it is most important that, two groups of configuration modes of magnet are for wherein
The transmitting of one group of magnet is inward-facing, and the transmitting of another group of magnet is faced out, so that the magnetic field service efficiency of voice coil motor is provided, it is real
Existing two groups of magnet are moved simultaneously, therefore the problem of magnetic interference will not occur between two groups of magnet.And, the voice coil motor
100 " small volume, efficiency high, low cost, adapt to the electronic equipment of twin-lens or many camera lenses, such as thin camera, twin-lens mobile phone
Deng.Other parts of these electronic equipments are not described in detail one by one herein.
It should be noted that magnet, the size of coil, quantity are made to change in response to inventive concept of the invention belonging to
Protection scope of the present invention, also can be by the design side of every group of coil movement (moving-coil type) or magnet movement (moving-magnetic type) in actuator
Formula is exchanged mutually.Above disclosed is only presently preferred embodiments of the present invention, can not limit the present invention's with this certainly
Interest field, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (10)
1. a kind of voice coil motor, including：At least first group magnet and second group of magnet, correspondence first group of magnetic being set up in parallel
The first coil of iron and the second coil of correspondence second group of magnet, it is characterised in that：First group of magnet is annular in shape
Set and with first surface of emission, second group of magnet is annularly set and with second surface of emission, first surface of emission
Direction and second surface of emission direction conversely, when the first coil and second coil electricity to described first
Group magnet and second group of magnet produce reciprocation and produce first, second driving force, so as to drive the first coil
Moved up and down with second coil.
2. voice coil motor as claimed in claim 1, it is characterised in that：Also include being located at first group of magnet and described second
Tertiary coil below group magnet, the tertiary coil is used to drive first group of magnet and second group of magnet to make direction
Consistent translational motion.
3. voice coil motor as claimed in claim 1, it is characterised in that：First group of magnet includes multiple the first independent magnetic
Iron, second group of magnet includes multiple the second independent magnet, wherein positioned at first group of magnet and second group of magnetic
Adjacent first magnet and second magnet are two independent magnet units or an one in the middle of iron
The shared magnet unit of formula.
4. voice coil motor as claimed in claim 3, it is characterised in that：Each first magnet and each second magnet are square
Shape bar magnet, first surface of emission of each first magnet inwardly, second surface of emission of each second magnet
Outwardly.
5. voice coil motor as claimed in claim 3, it is characterised in that：First magnet has first transmitting at least described in one
Face and the left and right side adjacent with first surface of emission, the south poles line side of the left and right side and first magnet
To at an acute angle, second magnet has second surface of emission and adjacent with second surface of emission left and right at least described in one
Side, the left and right side is at an acute angle with the south poles line direction of second magnet.
6. voice coil motor as claimed in claim 5, it is characterised in that：Multiple tertiary coils are located at first magnet and described
The left surface of the second magnet or the side of right flank are consistent to drive first group of magnet and second group of magnet to make direction
Translational motion.
7. voice coil motor as claimed in claim 6, it is characterised in that：The heart yearn of the first coil and second coil is twined
Around axis direction it is parallel with first surface of emission and second surface of emission, the axis of the heart yearn of tertiary coil winding
Direction is vertical with the left surface or the right flank positioned at adjacent side.
8. voice coil motor as claimed in claim 1, it is characterised in that：Voice coil motor as claimed in claim 1, its feature exists
In：First group of magnet and second group of magnet are fixed by a magnet bearing.
9. a kind of lens driver, including for carrying the lens bearing of an at least lens and for driving the lens to hold
The voice coil motor of seat, it is characterised in that：The voice coil motor is as described in claim any one of 1-8.
10. a kind of electronic equipment with camera, the camera has an at least lens and for driving the lens
Lens driver, it is characterised in that：The lens driver is as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071524.3A CN106842487A (en) | 2017-02-09 | 2017-02-09 | Voice coil motor, lens driver and the electronic equipment with camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071524.3A CN106842487A (en) | 2017-02-09 | 2017-02-09 | Voice coil motor, lens driver and the electronic equipment with camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106842487A true CN106842487A (en) | 2017-06-13 |
Family
ID=59122331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710071524.3A Pending CN106842487A (en) | 2017-02-09 | 2017-02-09 | Voice coil motor, lens driver and the electronic equipment with camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106842487A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107561826A (en) * | 2017-10-11 | 2018-01-09 | 绵阳安和光电科技有限公司 | A kind of double lens drive device |
| WO2018107725A1 (en) * | 2016-12-14 | 2018-06-21 | 华为技术有限公司 | Camera unit, camera module, and mobile terminal |
| CN109901276A (en) * | 2017-12-07 | 2019-06-18 | 台湾东电化股份有限公司 | More lens camera systems and its driving mechanism |
| CN112540053A (en) * | 2020-09-27 | 2021-03-23 | 杭州春来科技有限公司 | Open type gas detection device |
| TWI724464B (en) * | 2019-07-04 | 2021-04-11 | 新煒科技有限公司 | Multi-lens module structure and electronic device |
| CN112649930A (en) * | 2020-10-29 | 2021-04-13 | 江西联益光学有限公司 | Structured light projection module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018107725A1 (en) * | 2016-12-14 | 2018-06-21 | 华为技术有限公司 | Camera unit, camera module, and mobile terminal |
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| CN109901276A (en) * | 2017-12-07 | 2019-06-18 | 台湾东电化股份有限公司 | More lens camera systems and its driving mechanism |
| CN109901276B (en) * | 2017-12-07 | 2022-08-26 | 台湾东电化股份有限公司 | Multi-lens camera system and driving mechanism thereof |
| TWI724464B (en) * | 2019-07-04 | 2021-04-11 | 新煒科技有限公司 | Multi-lens module structure and electronic device |
| CN112540053A (en) * | 2020-09-27 | 2021-03-23 | 杭州春来科技有限公司 | Open type gas detection device |
| CN112649930A (en) * | 2020-10-29 | 2021-04-13 | 江西联益光学有限公司 | Structured light projection module |
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Application publication date: 20170613 |