CN109061979A - Lens module - Google Patents
Lens module Download PDFInfo
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- CN109061979A CN109061979A CN201810677782.0A CN201810677782A CN109061979A CN 109061979 A CN109061979 A CN 109061979A CN 201810677782 A CN201810677782 A CN 201810677782A CN 109061979 A CN109061979 A CN 109061979A
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- magnetic
- movable carrier
- circuit board
- excitation coil
- lens module
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- 230000005284 excitation Effects 0.000 claims abstract description 116
- 230000003287 optical effect Effects 0.000 claims abstract description 47
- 238000004804 winding Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- H04N23/60—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
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
A kind of lens module, including camera lens, imager chip, circuit board, movable carrier, magnetic excitation coil and magnetic element, imager chip is set on circuit board, movable carrier is movably connected in circuit board, and camera lens is fixed on movable carrier, magnetic excitation coil is set on movable carrier, and magnetic element is set on circuit board, and magnetic excitation coil can interact with magnetic element generates driving force to drive movable carrier to move in the plane perpendicular to optical axis direction.A kind of lens module provided by the invention, increase the mechanical structure of this realization optical anti-vibration of movable carrier in module internal, by controlling the current direction and size that are loaded into the magnetic excitation coil being mounted on movable carrier, the moving direction and moving distance of movable carrier can be controlled, and then drive camera lens towards the mobile specific distance in specific direction, camera lens minute movement caused by being shaken when compensation is taken pictures because of hand, stablize optical path, solve the problems, such as to take pictures it is middle because hand shake cause it is blurred image.
Description
Technical field
The present invention relates to optical imaging fields, and in particular to a kind of lens module.
Background technique
Currently, smart phone has become part indispensable in for people's lives with the development of mobile communication technology,
Mobile phone camera has become the standard configuration of smart phone, and requirement of the mobile phone user to mobile phone camera shooting effect also becomes to get over
Come higher.Common lens module is by the autofocus lens mould group being made of camera lens, VCM motor, imager chip and pcb board
With the tight shot mould group being made of camera lens, imager chip and pcb board, but while being shot with these two types of lens modules equal nothing
Method solves the problems, such as blurred image caused by shaking in shooting process because of hand.In this regard, general solution is directly in tradition
Add optical anti-vibration motor in lens module, but this will lead to lens module production cost it is excessively high, and then influence corresponding produce
The market competitiveness of product, therefore, it is necessary to design a kind of new lens module for having optical anti-vibration function.
Summary of the invention
Present invention aim to solve the deficiencies in the prior art, a kind of lens module is provided, realizes camera lens vertical
Moved in the plane of optical axis direction, with solve the problems, such as during taking pictures because hand shake cause it is blurred image.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of lens module of the present invention, including camera lens, imager chip and circuit board, the imager chip are set to
On the circuit board, the lens module further includes movable carrier, magnetic excitation coil and magnetic element, and the movable carrier can
It is movably connected in the circuit board, and the camera lens is fixed on the movable carrier, the magnetic excitation coil is set to institute
It states on movable carrier, the magnetic element is set on the circuit board, and the magnetic excitation coil can be mutual with the magnetic element
Effect generates driving force to drive the movable carrier to move in the plane perpendicular to optical axis direction.
A kind of lens module provided by the invention increases movable carrier this realization optical anti-vibration in module internal
Mechanical structure, by controlling the current direction and size that are loaded into the magnetic excitation coil being mounted on movable carrier, so that it may
The moving direction and moving distance of movable carrier are controlled, and then drives camera lens towards the mobile specific distance in specific direction, compensation
Camera lens minute movement caused by shaking when taking pictures because of hand stablizes optical path, solves during taking pictures because hand shake leads to figure
As fuzzy problem.
In one embodiment, the lens module includes at least two magnetic excitation coils, and described two magnetic swash
It encourages coil to be arranged in mutually perpendicular directions, relatively each magnetic excitation coil is correspondingly provided with an institute on the circuit board
State magnetic element, the driving force direction phase that two magnetic excitation coils are generated with the corresponding magnetic element interaction
It is mutually vertical.
In one embodiment, the lens module includes four magnetic excitation coils and four magnetic members
Part, four magnetic excitation coils are divided into two groups and are arranged in mutually perpendicular directions, and every group of two magnetic excitation coils
Mutually spaced and parallel setting, four magnetic elements are located at the surrounding of the imager chip.
In one embodiment, the magnetic excitation coil is square coil made of core wire winding, including the first long side
It is parallel to camera lens optical axis with the axis direction of the second long side, the core wire winding of the magnetic excitation coil, first long side is located at
The top of the magnetic element, second long side are located at the side of the magnetic element；One magnetic pole of the magnetic element
It is disposed adjacent with the magnetic excitation coil, another magnetic pole of the magnetic element is set far from the magnetic excitation coil.
In one embodiment, the magnetic excitation coil is square coil made of core wire winding, including the first long side
With the second long side, the axis direction of the core wire winding of the magnetic excitation coil is perpendicular to camera lens optical axis, and described two magnetic pumpings
The axis direction of the core wire winding of coil is mutually perpendicular to, and first long side is located at the top of the magnetic element, and described second
Long side is located at the top of first long side；One magnetic pole of the magnetic element is disposed adjacent with the magnetic excitation coil, institute
Another magnetic pole for stating magnetic element is set far from the magnetic excitation coil.
In one embodiment, the movable carrier is equipped with the corresponding camera lens for installing the camera lens and holds seat,
The camera lens holds seat through the camera lens and is fixed on the movable carrier；Alternatively, the lens module further includes voice coil motor,
The camera lens is mounted in the voice coil motor, and can be moved under the driving of the voice coil motor along camera lens optical axis direction, institute
The pedestal for stating voice coil motor is fixedly connected with the movable carrier.
In one embodiment, the lens module further includes vibration sensing element and controller, the vibration sensing
The shake of camera lens described in element sensing, the controller receive the signal of the vibration sensing element sensing and calculate each
The current direction and size of required load on the magnetic excitation coil, and then it is mobile described to compensate to control the movable carrier
The shake of camera lens.
In one embodiment, the movable carrier is movably connected by connection structure in the circuit board,
In, the connection structure includes multiple pull rods, and relatively the multiple pull rod of the movable carrier is correspondingly provided with multiple connection positions,
One end of each pull rod is fixedly connected on the circuit board, and the other end is fixedly connected with the connection position；Alternatively, described
Connection structure includes multiple groups tension spring roll structure, and tension spring one end in tension spring roll structure described in every group and the circuit board are solid
Fixed connection, the other end are fixedly connected with the movable carrier, and the ball in tension spring roll structure described in every group is mounted on the work
The side towards the circuit board of dynamic load body is to support the movable carrier；Alternatively, the connection structure includes plane spring
Piece, the plane spring piece include the first connecting portion being fixedly connected with the movable carrier and fix company with the circuit board
The second connecting portion connect is connected between the first connecting portion and the second connecting portion by the spring portion of elastically deformable,
The relatively described plane spring piece is correspondingly provided with support column on the circuit board, the support column and the corresponding plane spring
The second connecting portion of piece, which is fixedly connected, makes the movable carrier be suspended on the circuit board.
In one embodiment, the lens module further includes bracket and the optical filter for being fixed on the bracket, described
Optical filter is located at the camera lens close to the side of the imager chip, and the bracket is fixedly connected on the magnetic element, institute
Optical filter is stated to be fixedly mounted on above the imager chip by the bracket.
In one embodiment, the lens module further includes shield, and the shield includes being fixedly connected on institute
Four rectangular side panels on circuit board are stated, four rectangular side panels connect two-by-two is located on the periphery of the magnetic element, institute
The top for stating four rectangular side panels, which is bent upwards, extends to form overhead gage, and the overhead gage covers the movable carrier surrounding
Fringe region the magnetic element, the imager chip and the movable carrier are successively housed in the lens module
Inside, and four rectangular side panels come with the movable carrier circumferentially-spaced.
Further advantage of the invention will be described in detail in conjunction with attached drawing in the following detailed description section.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention is schematic
Examples and descriptions thereof are used to explain the present invention, does not constitute improper limitations of the present invention.
Fig. 1 is first embodiment of the invention lens module schematic perspective view；
Fig. 2 is the first angle stereogram exploded view of lens module shown in Fig. 1；
Fig. 3 is the second angle stereogram exploded view of lens module shown in Fig. 1；
Fig. 4 is the partial structure diagram of lens module shown in Fig. 1；
Fig. 5 is lens module internal structure top view shown in Fig. 1；
Fig. 6 is sectional structure chart of the lens module internal structure shown in Fig. 5 along A-A；
Fig. 7 is the positional diagram of magnetic excitation coil and magnetic element in lens module shown in Fig. 1；
Fig. 8 is magnetic excitation coil and another angle schematic diagram of magnetic element positional relationship shown in Fig. 5；
Fig. 9 is the magnetic excitation coil and magnetic element interaction principle figure of positional relationship shown in Fig. 7；
Figure 10 is the sectional structure chart of lens module shown in Fig. 1；
Figure 11 is another example structure schematic diagram of movable carrier in lens module of the present invention；
Figure 12 is the another location relation schematic diagram of magnetic excitation coil and magnetic element in lens module of the present invention
Figure 13 is the magnetic excitation coil and magnetic element interaction principle figure of positional relationship shown in Figure 12；
Figure 14 is second embodiment of the invention lens module schematic perspective view；
Figure 15 is the first angle stereogram exploded view of lens module shown in Figure 14；
Figure 16 is the second angle stereogram exploded view of lens module shown in Figure 14；
Figure 17 is the sectional structure chart of lens module shown in Fig. 9.
Description of symbols: 10, camera lens 13, voice coil motor 20, imager chip 30, circuit board 33, connection structure 35, magnetic
Property element 40, movable carrier 41, camera lens hold seat 43, connection position 45, magnetic excitation coil 451, the first long side 453, the second long side
50, bracket 55, optical filter 60, shield 63, rectangular side panels 65, overhead gage
Specific embodiment
For technical solution of the present invention is explained further, next with reference to the accompanying drawing the present invention will be described in detail, attached
Identical reference label indicates identical component in figure.
A kind of lens module provided by the invention, in conjunction with to Fig. 3, the lens module of first embodiment includes mirror refering to fig. 1
First 10, imager chip 20, circuit board 30, magnetic element 35, movable carrier 40 and magnetic excitation coil 45, wherein imager chip 20
On circuit board 30, movable carrier 40 is movably connected by connection structure 33 in circuit board 30, and the fixation of camera lens 10 is set
In on movable carrier 40, magnetic excitation coil 45 is set on movable carrier 40, and magnetic element 35 is set on circuit board 30, magnetic pumping
Coil 45 and magnetic element 35, which can interact, generates driving force to drive movable carrier 40 perpendicular to optical axis direction
It is moved in plane.
In the present embodiment, which includes at least two magnetic excitation coils 45, and two magnetic excitation coils 45 are in activity
It is arranged in mutually perpendicular directions on carrier 40, corresponding lens module includes at least two magnetic elements 35, on circuit board 30
Relatively each magnetic excitation coil 45 is correspondingly provided with a magnetic element 35, when the loading current in magnetic excitation coil 45, each
Magnetic excitation coil 45 distinguishes the corresponding interaction of magnetic element 35 and generates driving force, is arranged in mutually perpendicular directions
Two magnetic excitation coils 45 on driving force direction be mutually perpendicular to, to drive movable carrier 40 perpendicular to optical axis direction
It is moved in plane.In lens module provided by the invention, the magnetic excitation coil 45 on movable carrier 40 is not limited to along activity
Two groups of opposite side of carrier 40 are arranged, and two magnetic excitation coils 45 are distinguished the corresponding interaction of magnetic element 35 and generated
Driving force direction be also not necessarily limited to be mutually perpendicular to, can also be according to respectively generating between two or more magnetic excitation coils 45
Driving force direction is arranged at the mode of certain acute angle, as long as the resultant force of driving force suffered by magnetic excitation coil 45 can drive movable load
Body 40 is mobile in the plane perpendicular to optical axis direction.
Fig. 1 to Fig. 4 is please referred to, the lens module in the present embodiment is tight shot mould group, in movable carrier 40
Heart position is equipped with the opening passed through for light, is provided in the opening with the camera lens for installing camera lens 10 and holds seat 41, camera lens 10 passes through
Camera lens holds seat 41 and is fixed on movable carrier 40, and it is solid that camera lens 10 can hold seat 41 in such a way that dispensing or screw thread are tightened with camera lens
Fixed connection.Movable carrier 40 towards setting on the side of circuit board 30 there are four magnetic excitation coil 45, as shown in figure 3, activity carries
The rectangular configuration of opening is equipped with centered on body 40, four magnetic excitation coils 45 are divided into two groups respectively along two groups of movable carrier 40
Opposite side setting, i.e., the setting direction of two groups magnetic excitation coils 45 is mutually perpendicular to, and every group two magnetic excitation coils 45 mutually
Spaced and parallel setting.Correspondingly, being set on circuit board 30 there are four magnetic element 35, four magnetic elements 35 are located at imager chip
20 surrounding, magnetic element 35 are arranged in a one-to-one correspondence with magnetic excitation coil 45.With reference to Fig. 4 to Figure 10, wherein living in Fig. 4
This structure of dynamic load body 40 has carried out transparency process, so as to show be installed on movable carrier 40 towards circuit board 30
The relative positional relationship of magnetic excitation coil 45 and magnetic element 35 on side；The direction that Z axis is directed toward in Fig. 7 is camera lens optical axis
Direction, and Z axis is perpendicular to the plane where X-axis, Y-axis.Specifically, in the present embodiment, the magnetic pumping on movable carrier 40
As shown in figs. 4 and 7, magnetic excitation coil 45 is core to the relative positional relationship of magnetic element 35 on coil 45 and circuit board 30
Square coil made of line winding, the first long side 451 and the second long side 453 including opposite side each other, the core of magnetic excitation coil 45
The axis direction of line winding is parallel to camera lens optical axis, and the plane where magnetic excitation coil 45 is parallel to the flat of 30 place of circuit board
Face.Wherein, the first long side 451 of magnetic excitation coil 45 is located at the top of magnetic element 35, and the second long side 453 is far from magnetic member
Part 35 and the side for being located at magnetic element 35 is only located at the first of 35 top of magnetic element for each magnetic excitation coil 45
Long side 451 is within the scope of the magnetic action of its corresponding magnetic element 35, when magnetic excitation coil 45 is powered, the first long side 451
It interacts with magnetic element 35 and generates driving force, driving movable carrier 40 moves in the plane perpendicular to optical axis direction.This
In embodiment, principle that magnetic excitation coil 45 and magnetic element 35 interact is as shown in figure 9, magnetic excitation coil 45 in Fig. 9
For one in one group of magnetic excitation coil 45 being arranged along the x axis in Fig. 7, Z-direction indicates the direction of camera lens optical axis, magnetic
The magnetic north of property element 35 is disposed adjacent with the first long side 451 of magnetic excitation coil 45, and the magnetic south of magnetic element 35 is remote
It is arranged from magnetic excitation coil 45, when being powered to magnetic excitation coil 45, persistently has in the first long side 451 of magnetic excitation coil 45
Electric current passes through, and current direction is that vertical paper is inside in the first long side 451 in Fig. 9, the magnetic of magnetic north on magnetic element 35
Field direction can determine whether that the first long side 451 is acted on by the Ampere force of X-direction as shown in magnetic induction line according to left hand rule；Work as Fig. 9
In in the first long side 451 current direction be changed to vertical paper it is outside when, the direction for the Ampere force that the first long side 451 is subject to becomes X
Direction opposite direction.It similarly, can be by along Y-direction or the side Y after another group of magnetic excitation coil 45 being arranged along the y axis is powered
It is acted on to the Ampere force of opposite direction, movable carrier 40 can be moved in X/Y plane by ampere power drive.It follows that passing through control
Make the current direction and size being loaded into each magnetic excitation coil 45, so that it may the direction of displacement of accurate control movable carrier 40
And displacement, move movable carrier 40 in the plane perpendicular to optical axis direction.It is readily apparent that, it can also be by magnetic element 35
Magnetic south be disposed adjacent with magnetic excitation coil 45, the magnetic north of magnetic element 35 is arranged far from magnetic excitation coil 45.
In lens module provided by the invention, movable carrier 40 is movably connected by connection structure 33 in circuit
Plate 30.
In the present embodiment, movable carrier 40 is movably connected by four pull rods in circuit board 30.As shown in Fig. 2,
Movable carrier 40 is equipped with connection position 43 in four vertex, and one end of pull rod is fixedly connected on circuit board 30, the other end and company
Position 43 is connect to be fixedly connected by way of soldering.When loading current in magnetic excitation coil 45, movable carrier 40 is driven by Ampere force
Dynamic, opposing circuit board 30 moves in the plane perpendicular to optical axis direction, when magnetic excitation coil 45 powers off, movable carrier 40
Restore under the traction of pull rod to home position.In other embodiments, the quantity of pull rod can be increased and decreased according to specific needs,
The number of pull rod is not limited solely to four, as long as the holding of movable carrier 40 can be made evenly to be suspended on 30 top of circuit board；It draws
Bar can be also fixedly connected by way of injection molding or laser welding with connection position 43, and according to the difference of connection type, connection position
43 can accordingly be designed to different forms.
In the present embodiment, sensing 10 jitter direction of camera lens and big is correspondingly provided on the circuit board 30 of tight shot mould group
Small vibration sensing element (not shown), camera lens caused by vibration sensing element is sensed during taking pictures because of hand shake
10 minute movement, microprocessor (not shown) receive the sensing signal of vibration sensing element and are calculated according to this sensing signal
Need direction and the size of loading current on each magnetic excitation coil 45 out, so control movable carrier 40 moving direction and
Moving distance, to compensate the shake of camera lens 10, and then solve the problems, such as during taking pictures because hand shake cause it is blurred image.
In the present embodiment, tight shot mould group further includes bracket 50 and the optical filter 55 that is fixed on bracket 50, is filtered
Piece 55 is located at camera lens 10 close to the side of imager chip 20, specifically, between movable carrier 40 and magnetic element 35, props up
Frame 50 is fixedly connected on magnetic element 35, and optical filter 55 is fixedly mounted on 20 top of imager chip by bracket 50, is taken pictures
When, light enters from camera lens 10, and central opening and optical filter 55 through movable carrier 40 are finally incident on imager chip 20.
In the present embodiment, tight shot mould group further includes the shield 60 of metal material, and shield 60 includes fixed connects
Four rectangular side panels 63 being connected on circuit board 30, four rectangular side panels 63 connect two-by-two is located on the periphery of magnetic element 35,
The top of four rectangular side panels 63, which is bent upwards, extends to form overhead gage 65, and overhead gage 65 covers 40 surrounding of movable carrier
Fringe region magnetic element 35, imager chip 20 and movable carrier 40 to be successively housed in inside lens module, meanwhile, prevent
Four rectangular side panels 63 of shield 60 come with 40 circumferentially-spaced of movable carrier, to ensure movable carrier 40 in shield 60
It is interior that there is enough movable spaces, keep the movement in the plane perpendicular to optical axis direction of movable carrier 40 unobstructed.
In another embodiment, magnetic element 35 on the magnetic excitation coil 45 and circuit board 30 on movable carrier 40
Relative positional relationship is as shown in figure 11, and installation of the corresponding magnetic excitation coil 45 on movable carrier 40 is as shown in figure 12, activity
40 edge of carrier extends downwardly out four side plates, and four magnetic excitation coils 45 are separately mounted on the side of four side plates,
Magnetic excitation coil 45 is square coil made of core wire winding, the first long side 451 and the second long side 453 including opposite side each other,
The axis direction of the core wire winding of four magnetic excitation coils 45 is each perpendicular to camera lens optical axis.Specifically, four magnetic excitation coils
45 are divided into two groups is arranged along two groups of opposite side of movable carrier 40 respectively, and then the axis of the core wire winding of two groups of magnetic excitation coils 45
Line direction is mutually perpendicular to, and the plane where four magnetic excitation coils 45 is each perpendicular to the plane where circuit board 30.Such as Figure 11 institute
Show, the first long side 451 of magnetic excitation coil 45 is located at the top of magnetic element 35, and the second long side 453 is located at the first long side 451
Top and far from magnetic element 35, for each magnetic excitation coil 45, only close to the first long side 451 of magnetic element 35
Within the scope of the magnetic action of its corresponding magnetic element 35, when magnetic excitation coil 45 is powered, the first long side 451 and magnetism
The interaction of element 35 generates driving force, and driving movable carrier 40 moves in the plane perpendicular to optical axis direction.The present embodiment
In, magnetic excitation coil 45 and the principle that magnetic element 35 interacts are as shown in figure 13, and magnetic excitation coil 45 is Figure 11 in Figure 13
In one in one group of magnetic excitation coil 45 being arranged along the x axis, Z-direction indicates the direction of camera lens optical axis, magnetic element
35 magnetic north is disposed adjacent with the first long side 451 of magnetic excitation coil 45, and the magnetic south of magnetic element 35 swashs far from magnetic
The setting of coil 45 is encouraged, when being powered to magnetic excitation coil 45, persistently has electric current logical in the first long side 451 of magnetic excitation coil 45
It crosses, current direction is that vertical paper is inside in the first long side 451 in Figure 13, the magnetic direction of magnetic north on magnetic element 35
It as shown in magnetic induction line, can determine whether according to left hand rule, the first long side 451 is acted on by the Ampere force of X-direction；When in Figure 13
In one long side 451 current direction be changed to vertical paper it is outside when, the direction for the Ampere force that the first long side 451 is subject to becomes X-direction
Opposite direction.It similarly, can be by along Y-direction or Y-direction after another group of magnetic excitation coil 45 being arranged along the y axis is powered
The Ampere force of opposite direction acts on, and movable carrier 40 can be moved in X/Y plane by ampere power drive.It follows that passing through control
The current direction and size being loaded into each magnetic excitation coil 45, so that it may the direction of displacement of accurate control movable carrier 40 and
Displacement moves movable carrier 40 in the plane perpendicular to optical axis direction.It is readily apparent that, it can also be by magnetic element 35
Magnetic south is disposed adjacent with magnetic excitation coil 45, and the magnetic north of magnetic element 35 is arranged far from magnetic excitation coil 45.
In the lens module provided in the present invention, movable carrier 40 can also pass through the connection structure of tension spring ball-type
Or the connection structure of plane spring chip is suspended on circuit board 30.Specifically, movable carrier 40 can pass through four groups of tension spring balls
Structure is suspended on circuit board 30, and tension spring one end in every group of tension spring roll structure is fixedly connected with circuit board 30, the other end with
Movable carrier 40 is fixedly connected, the ball in every group of tension spring roll structure be mounted on movable carrier 40 towards circuit board 30
Side, between movable carrier 40 and bracket 50 or between movable carrier 40 and other pedestals, to support movable carrier 40
Play the role of maximum height limit after sliding simultaneously.When loading current in magnetic excitation coil 45, movable carrier 40 is driven by Ampere force
Dynamic, by the sliding of ball in a groove, opposing circuit board 30 moves in the plane perpendicular to optical axis direction, works as magnetic pumping
When the electric current loaded in coil 45 removes, movable carrier 40 restores under the traction of tension spring to home position.Implement in others
In example, the group number of tension spring roll structure can be increased and decreased according to specific needs, the quantity of tension spring roll structure is not limited solely to four groups,
As long as being able to achieve the holding of movable carrier 40 is evenly suspended on 30 top of circuit board.
In another embodiment, movable carrier 40 is suspended on circuit board 30 by four plane spring pieces, plane spring
Piece includes the first connecting portion being fixedly connected with movable carrier 40 and the second connecting portion that is fixedly connected with circuit board 30, and first
It is connected between interconnecting piece and second connecting portion by the spring portion of elastically deformable, relatively each plane spring on circuit board 30
Piece is correspondingly provided with a support column, and each support column is fixedly connected with the second connecting portion of corresponding flat spring leaf makes movable load
Body 40 is suspended on 30 top of circuit board.When loading current in magnetic excitation coil 45, movable carrier 40 is by ampere power drive, phase
Circuit board 30 is moved in the plane perpendicular to optical axis direction, when magnetic excitation coil 45 powers off, movable carrier 40 is in bullet
Restore under the traction in spring portion to home position.In other examples, plane spring piece can be designed to the shape of whole piece
Formula, can also be designed to the form of two panels, as long as being able to achieve the holding of movable carrier 40 is evenly suspended on 30 top of circuit board simultaneously
It can be moved in the plane perpendicular to optical axis direction.
In lens module provided by the invention, connection structure 33 also acts as the effect of conductive connection, on movable carrier 40
Energization lead one end of magnetic excitation coil 45 be electrically connected with connection structure 33, and then magnetic excitation coil 45 passes through connection structure
33 are electrically connected to realize and be electrically connected with circuit board 30 with circuit board 30.It is readily apparent that, can also be realized by setting conducting wire
Magnetic excitation coil 45 is electrically connected with circuit board 30.
It is the schematic perspective view of second embodiment of the invention lens module, second embodiment and the shown in Figure 14
The difference of one embodiment is that lens module includes voice coil motor 13, and camera lens 10 is mounted on voice coil motor 13, voice coil motor 13
It is fixedly connected with movable carrier 40.Lens module in the present embodiment is autofocus lens mould group, in conjunction with refering to fig. 14 to figure
17, camera lens 10 is mounted on voice coil motor 13, under the driving of voice coil motor 13 camera lens 10 can be moved along camera lens optical axis direction with
Realize focus function, the pedestal of voice coil motor 13 is fixedly connected with movable carrier 40.
Voice coil motor 13 in autofocus lens mould group is electrically connected by electric connection structure and movable carrier 40, living
Dynamic load body 40 is electrically connected further through the connection structures such as pull rod or plane spring piece 33 and circuit board 30, and then realizes voice coil
Motor 13 and circuit board 30 are electrically connected, by controlling the current direction being loaded into voice coil motor 13 and size and work respectively
Current direction and size on dynamic load body 40 in magnetic excitation coil 45, so that it may make the autofocus lens mould group while realize certainly
Dynamic focus function and optical anti-vibration function improve the quality of captured image.
In lens module provided by the invention, movable carrier 40 can be metalwork or plastic is also possible to metal and adds
Plastic parts；Magnetic excitation coil 45 can etch coil using copper wire winding or using FPCB；Movable carrier 40 and magnetic pumping
Patch coil type, coil can be used around PIN formula or bracket coiling injection molding type in the combination of coil 45.
Lens module provided by the invention increases the machinery of this realization optical anti-vibration of movable carrier in module internal
Structure, by controlling the current direction and size that are loaded into the magnetic excitation coil being mounted on movable carrier, so that it may control
The moving direction and moving distance of movable carrier, and then drive camera lens towards the mobile specific distance in specific direction, compensation is taken pictures
When because hand shake caused by camera lens minute movement, stablize optical path, solve during taking pictures because hand shake lead to image mould
The problem of paste, and cost is relatively low, it is easier to it realizes.
More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although
The present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of lens module, including camera lens (10), imager chip (20) and circuit board (30), the imager chip (20) are set to
On the circuit board (30), which is characterized in that the lens module further includes movable carrier (40), magnetic excitation coil (45) and magnetic
Property element (35), the movable carrier (40) is movably connected in the circuit board (30), and the camera lens (10) fixation is set
In on the movable carrier (40), the magnetic excitation coil (45) is set on the movable carrier (40), the magnetic element
(35) it is set on the circuit board (30), the magnetic excitation coil (45) and the magnetic element (35) can interact and generate drive
Power is to drive the movable carrier (40) to move in the plane perpendicular to optical axis direction.
2. lens module as described in claim 1, which is characterized in that the lens module includes at least two magnetic pumpings
Coil (45), described two magnetic excitation coils (45) are arranged in mutually perpendicular directions, relatively each on the circuit board (30)
The magnetic excitation coil (45) is correspondingly provided with the magnetic element (35), two magnetic excitation coils (45) with it is corresponding
The driving force direction that magnetic element (35) interaction generates is mutually perpendicular to.
3. lens module as claimed in claim 2, which is characterized in that the lens module includes four magnetic excitation coils
(45) it is divided into two groups with four magnetic elements (35), four magnetic excitation coils (45) and sets in mutually perpendicular directions
It sets, and every group of two magnetic excitation coil (45) mutually spaced and parallel settings, four magnetic elements (35) are located at
The surrounding of the imager chip (20).
4. lens module as claimed in claim 2, which is characterized in that the magnetic excitation coil (45) is made of core wire winding
Square coil, including the first long side (451) and the second long side (453), the axis of the core wire winding of the magnetic excitation coil (45)
It is oriented parallel to camera lens optical axis, first long side (451) is located at the top of the magnetic element (35), second long side
(453) it is located at the side of the magnetic element (35)；A magnetic pole and the magnetic excitation coil for the magnetic element (35)
(45) it is disposed adjacent, another magnetic pole of the magnetic element (35) is set far from the magnetic excitation coil (45).
5. lens module as claimed in claim 2, which is characterized in that the magnetic excitation coil (45) is made of core wire winding
Square coil, including the first long side (451) and the second long side (453), the axis of the core wire winding of the magnetic excitation coil (45)
Direction is perpendicular to camera lens optical axis, and the axis direction of the core wire winding of described two magnetic excitation coils (45) is mutually perpendicular to, described
First long side (451) is located at the top of the magnetic element (35), and second long side (453) is located at first long side
(451) top；One magnetic pole of the magnetic element (35) is disposed adjacent with the magnetic excitation coil (45), the magnetic member
Another magnetic pole of part (35) is set far from the magnetic excitation coil (45).
6. lens module as described in claim 1, which is characterized in that the movable carrier (40) is equipped with corresponding for pacifying
The camera lens for filling the camera lens (10) is held seat (41), and the camera lens (10) holds seat (41) through the camera lens and is fixed on the movable carrier
(40) on；Alternatively,
The lens module further includes voice coil motor (13), and the camera lens (10) is mounted in the voice coil motor (13), and can
It is moved under the driving of the voice coil motor (13) along camera lens optical axis direction, the pedestal of the voice coil motor (13) and the activity
Carrier (40) is fixedly connected.
7. lens module as described in claim 1, which is characterized in that the lens module further includes vibration sensing element and control
Device processed, the shake of camera lens (10) described in the vibration sensing element sensing, the controller receive the vibration sensing element sense
The signal of survey and the current direction and size for calculating required load on each magnetic excitation coil (45), and then described in control
The mobile shake to compensate the camera lens (10) of movable carrier (40).
8. lens module as described in claim 1, which is characterized in that the movable carrier (40) can by connection structure (33)
It is movably connected in the circuit board (30), wherein the connection structure (33) includes multiple pull rods, the movable carrier (40)
Relatively the multiple pull rod is correspondingly provided with multiple connection positions (43), and one end of each pull rod is fixedly connected on the circuit board
(30), the other end is fixedly connected with the connection position (43)；Alternatively,
The connection structure (33) includes multiple groups tension spring roll structure, tension spring one end and institute in tension spring roll structure described in every group
It states circuit board (30) to be fixedly connected, the other end is fixedly connected with the movable carrier (40), in tension spring roll structure described in every group
Ball be mounted on the side towards the circuit board (30) of the movable carrier (40) to support the movable carrier (40)；
Alternatively,
The connection structure (33) includes plane spring piece, and the plane spring piece includes and the movable carrier (40) fixed company
The first connecting portion connect and the second connecting portion being fixedly connected with the circuit board (30), the first connecting portion and described second
It is connected between interconnecting piece by the spring portion of elastically deformable, the relatively described plane spring piece is accordingly set on the circuit board (30)
There is support column, the support column is fixedly connected with the second connecting portion of the corresponding plane spring piece carries the activity
Body (40) is suspended on above the circuit board (30).
9. lens module as described in claim 1, which is characterized in that the lens module further includes bracket (50) and is fixed on
The optical filter (55) of the bracket (50), the optical filter (55) are located at the camera lens (10) close to the imager chip (20)
Side, the bracket (50) are fixedly connected on the magnetic element (35), and the optical filter (55) passes through the bracket (50)
It is fixedly mounted on above the imager chip (20).
10. lens module as described in claim 1, which is characterized in that the lens module further includes shield (60), described
Shield (60) includes four rectangular side panels (63) being fixedly connected on the circuit board (30), four rectangular side panels
(63) connect two-by-two and be located on the periphery of the magnetic element (35), the top of four rectangular side panels (63) is bent upwards
It extends to form overhead gage (65), the overhead gage (65) covers the fringe region of the movable carrier (40) surrounding with by the magnetic
Property element (35), the imager chip (20) and the movable carrier (40) are successively housed in inside the lens module, and institute
Four rectangular side panels (63) are stated to come with the movable carrier (40) circumferentially-spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677782.0A CN109061979A (en) | 2018-06-27 | 2018-06-27 | Lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677782.0A CN109061979A (en) | 2018-06-27 | 2018-06-27 | Lens module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109061979A true CN109061979A (en) | 2018-12-21 |
Family
ID=64821302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810677782.0A Pending CN109061979A (en) | 2018-06-27 | 2018-06-27 | Lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109061979A (en) |
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| CN110933266A (en) * | 2019-07-15 | 2020-03-27 | 华为技术有限公司 | Image pickup apparatus, method and adjustment element |
| CN111556239A (en) * | 2020-05-25 | 2020-08-18 | 维沃移动通信有限公司 | Photographing device, electronic apparatus, and control method |
| CN112394594A (en) * | 2019-08-16 | 2021-02-23 | 三星电机株式会社 | Camera module |
| CN112637469A (en) * | 2020-12-23 | 2021-04-09 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN112804423A (en) * | 2020-12-29 | 2021-05-14 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN112887553A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Camera shooting assembly and electronic equipment |
| WO2021238849A1 (en) * | 2020-05-27 | 2021-12-02 | 维沃移动通信有限公司 | Photographing apparatus, electronic device, and control method for photographing apparatus |
| WO2022116769A1 (en) * | 2020-12-01 | 2022-06-09 | 北京三快在线科技有限公司 | Camera module and unmanned vehicle |
| WO2023025126A1 (en) * | 2021-08-25 | 2023-03-02 | 维沃移动通信有限公司 | Camera assembly and electronic device |
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| CN112887553A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Camera shooting assembly and electronic equipment |
| WO2023025126A1 (en) * | 2021-08-25 | 2023-03-02 | 维沃移动通信有限公司 | Camera assembly and electronic device |
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