CN104820272A - Lens driving device, auto-focusing camera, and mobile terminal device with camera - Google Patents
Lens driving device, auto-focusing camera, and mobile terminal device with camera Download PDFInfo
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- CN104820272A CN104820272A CN201510266707.1A CN201510266707A CN104820272A CN 104820272 A CN104820272 A CN 104820272A CN 201510266707 A CN201510266707 A CN 201510266707A CN 104820272 A CN104820272 A CN 104820272A
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- coil
- lens
- magnetite
- lens supports
- yoke
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- 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
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- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention provides a lens driving device, an automatic focusing camera and a mobile terminal device with a camera, which have the advantages that the structure is simple, and a lens supporting body can move and sway along the an optical axis direction for correcting movement. The plane of a first coil 19 which is wound at the periphery of the lens supporting body 5 is in a quadrilateral shape observed from one side of the optical axis direction; second coils 16a-16d are arranged at the periphery of the lens supporting body at 90 degrees interval; and the second coils 16a-16d are arranged on edges of the quadrilateral shape formed by the first coil 19 to form an annular shape observed from the outer side of the radial direction of the lens supporting body 5. A first magnet 17 is arranged oppositely to the edges of the quadrilateral shape formed by the first coil 19 to form the same magnetic pole on the inner peripheral face; and the first magnet 17 is opposite to the second coils 16a-16d at the position of the second coils 16a-16d. The first coil 19 is electrified when the lens supporting body moves in the optical axis direction, and certain current is applied to the second coils 16a-16d when the lens supporting body moves along an X-Y direction.
Description
The divisional application that this case is application number is " 201210043428.5 ", the applying date is " on February 24th, 2012 ", name is called the application for a patent for invention of " mobile terminal apparatus of lens driver, automatic focusing camera and band camera ".
Technical field
The present invention is the mobile terminal apparatus of relevant a kind of lens driver, auto-focus camera and having camera.
Background technology
Patent documentation 1 (patent is disclosed on JP2002-373435 publication) discloses one to be had about daylighting actuator, coil is in the form of a ring interval with viewed from outer circumferential side with 90 degree in the outer peripheral face circumferential direction of lens supports body, outside the direction, footpath of lens supports body, be configured with the magnetite being in subtend position with each coil, move to optical axis direction (focus direction) and traffic direction (X-direction) by making lens supports body to coil electricity.
On the other hand, in minicam, lens supports body only moves to optical axis direction, for rolling normal moveout correction, when X-Y direction moves it, by the motor that drives to X-direction with make lens driver move integrally to the motor of Y-direction driving.
In lens driver on minicam, only mobile lens supporter carries out this point is do not have in the past for and the movement of X-Y direction (rolling normal moveout correction) mobile to lens supports body optical axis direction (Z-direction).
In addition, even if can adopt the technology of patent documentation 1 to realize to the movement of lens supports body optical axis direction, but the technology of patent documentation 1 can only provide and moves to X-direction, and normal moveout correction (X-Y direction, the i.e. movement in optical axis orthogonal face) of shaking then cannot realize.
Summary of the invention
Therefore, the object of the invention is to provide that a kind of structure is simple, lens supports physical efficiency moves to optical axis direction and shakes the lens driver of normal moveout correction movement, auto-focus camera and the mobile terminal apparatus with camera.
For realizing the lens driver of described object, have: the lens supports body of support of lens in inner circumferential; The fixed body of random movable support lens supports body on inner circumferential side; Be wound on the 1st coil on lens supports external week; With the 2nd coil of 90 degree of interval configurations at least 2 on the periphery of lens supports body; Be arranged on the 1st magnetite on fixed body.It is characterized by: the 1st coil is square shape from its plane viewed from the side of optical axis direction; 2nd coil configuration on the dimetric limit that the 1st coil is formed while, see in the form of a ring outside the direction, footpath of lens supports body.1st magnetite is arranged in each limit subtend in dimetric 1st coil, and inner peripheral surface makes same pole simultaneously, with the 2nd coil subtend on the position that the 2nd coil is arranged.To the 1st coil electricity when lens supports body moves to optical axis direction.When lens supports body is moved to X-Y direction orthogonal with the optical axis, logical certain electric current on the 2nd set coil.
The further feature of this lens driver is, fixed body has the yoke of band outer peripheral sidewall, and the outer peripheral sidewall of yoke is square shape from its plane of optical axis direction side.1st magnetite is corner ring-type, is fitted together in the inner side of the outer peripheral sidewall of yoke.
The further feature of this lens driver is, yoke has and is positioned at the 1st coil and the madial wall on the 2nd position, coil inner circumferential side and the connecting wall being connected madial wall and lateral wall on each bight of its outer peripheral sidewall.
The further feature of this lens driver is, on each bight of the 1st magnetite, within it all sides have the 2nd magnetite.
The further feature of this lens driver is, the 1st coil and the 2nd coil form coil case, the cylindrical shape of lens supports body, and the smooth fixed part of the tangential direction of the side face arranged in its periphery is fixed wtih coil case.
For the feature realizing the auto-focus camera of described object is, the lens driver with aforementioned any record and the sensor be arranged on the lens imaging side of lens supports body.
For the feature realizing the mobile terminal apparatus of the having camera of described object is the auto-focus camera being equipped with foregoing description.
Called mobile terminal device, what say is mobile phone, information carried terminal (PDA), notebook computer etc.
Lens driver historically, lens supports body is to the movement of focusing direction (optical axis direction), and according to after the 1st coil electricity and the axial thrust of lens light produced between magnetite, lens supports is known from experience and moved to optical axis direction.Normal moveout correction of shaking is then that lens supports body then can move to X-Y direction by after arbitrary 2nd coil electricity and the thrust of the radial direction of the lens supports body produced between magnetite.Thus, lens supports body just can realize focusing movement and rolling normal moveout correction moves.
Magnetite double as optical axis direction move with and X-Y direction move use.By 1 the 1st coil and at least 2 the 2nd coils, lens supports body just can realize moving to optical axis direction and X-Y direction, by formation easily and a small amount of component count, the focusing that just can realize lens supports body is moved and is shaken normal moveout correction.
The limit of the 1st coil of magnetite and square shape is relative to the configuration, so plate object can be adopted to realize simple structure.
1st coil viewed from the side of optical axis direction in dimetric ring-type, magnetite is provided with owing to corresponding on the 1st position, coil dimetric each limit, so with the 1st coil is done compared with conglobate occasion, the interval of the 1st coil and magnetite can keep certain, and the subtend area of relative broad range can be obtained, the optical axis direction thrust of lens driver can be improved.
Equally, because the 2nd coil configuration is on the limit of the 1st coil of square shape, so compared with the 1st coil to be done conglobate situation by it, and the interval between magnetite can keep certain, and can obtain the subtend area of relative broad range.
According to described lens driver, because its outer peripheral sidewall has been made square shape by yoke, the 1st magnetite can be embedded assembling, so easily manufacture by all sides within it.
In addition, the magnetic flux that can be reduced magnetite by yoke is revealed, and can improve the thrust in optical axis direction and X-Y direction.
According to described lens driver, on the bight of the 1st magnetite of corner ring-type, owing to clamping the 1st magnetite, the 1st coil and the 2nd coil by the madial wall of yoke and outer peripheral sidewall.So, bight magnetic density can be improved, improve the thrust acting on the 1st coil and the 2nd coil further.In addition, around the entirety of the 1st coil and the 2nd coil, can act on and produce slightly homogeneous thrust.
According to described lens driver, on each bight of the 1st magnetite, within it all sides have the 2nd magnetite, can improve the magnetic flux acting on the 1st coil on yoke bight and the 2nd coil and the thrust improving optical axis direction and X-Y direction.
Accompanying drawing explanation
The exploded perspective view of the lens driver of [Fig. 1] relevant 1st example.
[Fig. 2] is a kind of lens driver of relevant 1st example, is the A-B sectional view shown in Fig. 5.
[Fig. 3] is the horizontal sectional view in the main portion of the lens driver of relevant 1st example.
[Fig. 4] medelling demonstrates the schematic diagram of K portion effect in Fig. 3.
The lens driver of [Fig. 5] relevant 1st example is from the planimetric map viewed from front side.
[Fig. 6] is relevant to the exploded perspective view of the 2nd example lens driver.
On the A-C position that [Fig. 7] illustrates in Fig. 5 of the 1st example, the sectional view after the lens driver that the 2nd example is correlated with is blocked.
The exploded perspective view of the lens driver of [Fig. 8] relevant 3rd example.
The lens driver that 3rd example is correlated with, on the A-C position shown by Fig. 5 of the 1st example, is blocked rear shown sectional view by [Fig. 9].
1 lens driver
3 yokes
3a outer shaft sidewall
3b madial wall
3d front side wall
5 lens supports bodies
16a ~ 16d the 2nd coil
17 the 1st magnetites
19 the 1st coils
27 the 2nd coils
Embodiment
Below with reference to annex, example of the present invention is illustrated.First, with reference to Fig. 1 ~ Fig. 5 in annex drawing, the 1st example of the present invention is described in detail.The lens driver 1 of this example relevant is a kind of lens driver of the auto-focus camera be assembled in mobile phone.
In this lens driver 1, as shown in Figure 1, in inner circumferential by the lens supports body 5 of support of lens (not shown), on inner circumferential side, lens supports body 5 is freely carried out movable support the yoke 3 as a fixed body part, in yoke 3 inner circumferential, after front side pad (insulation material) 7, front side spring 9, the 1st magnetite 17, rear side pad 15 (insulation material), rear side spring 11, portion of terminal material 18 are piled up successively, firm banking 8.Anticipate as shown in Figures 1 and 2, coil case 4 is fixed in the periphery of lens supports body 5, front side spring 9 and rear side spring 11 is fixed in front side portion and rear lateral portion respectively.
As shown in Figures 1 and 5, the front side wall 3d of yoke 3 its profile viewed from front side, slightly in square shape, along the profile of square shape, is provided with all sidewall 3a.The peristome 2 of configuration lens supports body 5 is arranged on the central part of yoke 3.
As shown in Figures 1 and 2, front side pad 7 is connected to front side wall 3d, is accommodated into the inner circumferential side of yoke 3.As previously mentioned, on the rear side of front side pad 7, front side spring the 9, the 1st magnetite 17, rear side pad 15, rear side spring 11, portion of terminal material 18 and base 8 are fixed successively, form fixed body.
1st magnetite 17 its plane viewed from front side is corner ring-type, and in this example, 4 tabular magnetites 14 form framework.The magnetic pole of the inner circumferential side of each tabular magnetite 14 is made identical.Such as, inner circumferential side is made N pole, outer circumferential side is made S pole.Each tabular magnetite 14 is configured in the inner face of the inner circumferential sidewall 3a of yoke 3.
As shown in Figure 1, the slightly cylindrical shape of lens supports body 5.On the smooth fixed part 5a of the tangential direction of all planes arranged in 4 places of its periphery, be fixed wtih coil case 4.The coil case 4 that the periphery of lens supports body 5 is fixed is made up of the 1st coil 19 and the 2nd coil 16a, 16b, 16c, 16d.
1st coil 19 and the 1st magnetite 17 subtend, be configured on the inner circumferential side of the 1st magnetite 17, in 4 square ring shapes.
Further, 4 the 2nd coil 16a ~ 16d are configured in each edge of four square rings on the periphery of the 1st coil 19.Each 2nd coil 16a ~ 16d is outside the radial direction of lens supports body 5, and side in the form of a ring.Along each longer sides configured in one piece of the 1st coil 19.
Each 2nd coil 16a ~ 16d overlaps on the lateral surface of the 1st coil 19, the rear side edge 25 of the front side edge 22 on front side of optical axis direction, rear side and left and right sides edge 24,26 is overlapped in the 1st coil 19.
1st magnetite 17 is arranged on the opposite of the 2nd coil 16a ~ 16d, and the inner circumferential side 17a of the 1st magnetite 17 is configured in each edge 22,24,25,26 opposite of the 2nd coil 16a ~ 16d.The size on one side of the 1st magnetite 17 of square shape is slightly identical with the circumferential direction size of the 2nd coil 16a ~ 16d, and the area of inner circumferential side 17a of the 1st magnetite 17 is also slightly identical with the area of the 2nd coil 16a ~ 16d on opposite simultaneously.
In addition, form the 1st magnetite 17 each tabular magnetite 14 get involved subtend the 2nd coil 16a ~ 16d after, with the 1st coil 19 subtend.In the form of this enforcement, the 1st magnetite 17 in its circumferential direction on the whole, relative 1st coil 19 and the 2nd coil 16a ~ 16d subtend.
As shown in Figure 4, in the inner peripheral surface 17a of the 1st magnetite 17, the magnetic flux that sends of (afterwards) sidepiece is towards the part containing inner and front (afterwards) direction of radial direction in the past for 2nd coil 16a ~ 16d.More away from inner peripheral surface 17a (afterwards) lateral bend more forward of magnetite 17.In other words, the composition towards the inside and fore-and-aft direction that cover radial direction of magnetic flux.
Such as, from front side, feed anticlockwise electric current I to the 1st coil 19
1, radial direction inside give interlinkage flux composition after will produce thrust to optical axis direction front according to Fleming, John Ambrose rule.Lens supports body 5 will move to optical axis direction.See from the outside, to the 2nd coil 16a once feed anticlockwise electric current I
2, the front side edge 22 (rear side edge 25) of each 2nd coil 16a then can give the interlinkage flux composition in optical axis direction front (rear), produce thrust in radial direction inside.For this reason, for making the 2nd coil 16a mobile to radial direction inside, lens supports body 5 moves.2nd coil 16b ~ 16d is also identical.
Namely, 2nd coil 16a, 16c is in the magnetic line of force of magnetite 17, according to the magnetic force be orthogonal on the 2nd coil 16a, 16c composition and the electric current flowed on the 2nd coil 16a, 16c, by Fleming, John Ambrose lefft-hand rule, as shown in Figure 3, thrust X acts on the radial direction of lens supports body 5, and the 2nd coil 16b, 16d is also same, and thrust Y acts on the radial direction of lens supports body 5.Thrust X and thrust Y is mutually orthogonal.
As shown in Figure 3, the 1st coil 19 is connected on Z drive division 32, and the 2nd each coil 16a ~ 16d is connected on X-Y drive division 33, passes to the electric current of certain value from each drive division 32,33.In addition, on Fig. 3, with connecting line between the Z drive division 32 gone out represented by dotted line and the 1st coil 19 and the connecting line between X-Y drive division 33 and the 2nd coil 16a ~ 16d, expression be only the connection that electric current inputs or outputs.
In this example, the 2nd coil 16a and 16c, 16b and 16d are connected in series.Coil 16a and 16c drives to thrust X-direction, 16b and 16d to thrust Y-direction.
Such as, on Z drive division 32, when lens supports body 5 moves to focusing position, pass to current value Z to the 1st coil 19.
Equally, rock correction occasion, be electrified stream X by X-Y drive division 33 to the 2nd coil 16a and 16c, lens supports body 5 is moved in the X direction.2nd coil 16b and 16d is electrified stream Y, lens supports body 5 is moved to Y-direction.Accordingly, lens supports body 5 carries out rocking correction after moving to X-Y direction.
Even, among Fig. 2 and Fig. 4, demonstrate according to symbols Z, X, Y institute galvanization, the thrust direction produced and size.The direction of display is that Z is optical axis direction, X and Y is the two-dimensional directional orthogonal with each optical axis direction.
As shown in Figure 1, front side spring 9 is the state of nature before assembling is tabular.It is that the inner circumferential side 9b of circular shape and 4 wrist 9c connecting periphery sidepiece 9a and inner periphery side portion 9b formed by the periphery sidepiece 9a forming plane corner ring-type, the plane that is configured in periphery sidepiece 9a inner circumferential.Z-direction and X-Y direction can comfortable be out of shape.
Rear side spring 11 state of nature is before assembling tabular.It is that the inner circumferential side 11b of circular shape and 4 wrist 11c connecting periphery sidepiece 11a and inner periphery side portion 11b formed by the periphery sidepiece 11a forming plane corner ring-type, the plane that is configured in periphery sidepiece 11a inner circumferential.
The periphery sidepiece 9a of front side spring 9 is clamped between front side pad 7 and the 1st magnetite 17, and inner circumferential side 9b is fixed on the front end of lens supports body 5.The periphery sidepiece 11a of rear side spring 11 is clamped between base 8 and rear side pad 15.Inner periphery side portion 11b is fixed on the rear end of lens supports body 5.Accordingly, lens supports body 5, according to front side spring 9 and rear side spring 11, can be supported to the property of can move freely on optical axis direction (Z-direction) and X-Y direction.Rear side spring 11 is divided into 2 parts, and divided one is connected respectively on the 1st coil 19 with another, passes into DC current from rear side spring 11.
On the periphery sidepiece 9a of rear side spring 11, overlap has the portion of terminal material 18 of slightly same shape therewith.Directly electric current is fed from the power supply terminal 18a continued on outside.
Then, according to the electric current passed into the 1st coil 19, lens supports body 5 moves to optical axis direction front, and the equilibrium locations reached between the electromagnetic force produced between the precompression of lens supports body in the Z-direction of front side spring 9 and rear side spring 11 and the 1st coil 19 and magnetite 17 stops.
Lens supports body 5 is moving to the occasion in X-Y direction, according to the electric current leading to upper certain value to the 2nd set coil 16a ~ 16d, the equilibrium locations of making a concerted effort and reaching between the electromagnetic force produced between the 1st magnetite 17 of the 2nd coil 16a ~ 16d and each correspondence of the spring on the X-Y direction of front side spring 9 and rear side spring 11 stops.
Next, the assembling of the lens driver 1 be relevant in example of the present invention, functions and effects are described.The assembling of lens driver 1 takes the lead in being then fixed by the 2nd coil 16a ~ 16d on the outer peripheral face of the 1st coil 19, forms coil case 4, is fixed on fixed part set on the periphery of lens supports body 5.
The assembling of lens driver 1 as shown in Figure 1, front side pad 7 butts up against on front side wall 3d by the inner circumferential side of yoke 3 and is configured, then successively rear side spring 11 fixing after front side spring 9, the 1st magnetite 17, pad 15, overlapping portion of terminal material 18 and base 8 are assembled on the rear side of front side pad 7.
Then, relative coil 16a and 16c, 16b and 16d are carried out connect the 2nd formed coil 16a ~ 16d, by the coil case 4 be fixed on the 1st coil 19, the lens supports body 5 secured is inserted from the rear side of peristome 2 after, the inner circumferential side 9b of front side the spring 9 and inner periphery side portion 11b of rear side spring 11 is fixed.Fixed form such as can be carried out with solid.
Then, after lens driver 1 is assembled and ended, the 1st coil 19 is connected on Z drive division 32, and the 2nd coil 16a ~ 16d is connected on X-Y drive division 33.
Shown in Fig. 2, the driving of the lens driver 1 of this example relevant, the peak value of the radio-frequency component (contrast) that the portrait sensor (not shown) that the rear end side from base 8 sets by Z drive division 32 receives compares one by one, and lens supports body moves linearly to focal position to Z-direction.
When lens supports body 5 moves linearly to Z-direction, according to the electromagnetic force produced between the current value Z that the 1st coil 19 passes into and magnetite 17 with front side spring 9 and rear side spring 11 precompression make a concerted effort stop when equilibrium locations.
In addition, the X-Y of lens supports body 5 controls (rolling normal moveout correction), receive the high low signal of the rolling dynamic correction value in X-Y direction according to gyro module, after the rolling dynamic correction value of X-direction and Y-direction is calculated, determine amount of movement X, Y of lens supports body 5 respectively.Be energized to the 2nd coil 16a, 16c and the 2nd coil 16b, 16d.
According to this example, the focusing of lens supports body 5 is moved and is, by being energized to the 1st coil 19, lens supports body moves to optical axis direction, rock the electric current being corrected to and leading to upper certain value to arbitrary 2nd coil 16a ~ 16d, lens supports body 5 will move to X-Y direction.Accordingly, the focusing that just can realize lens supports body 5 is moved and is shaken normal moveout correction.
According to this example, the 1st magnetite doubles as the mobile magnetite used and shake normal moveout correction of focusing.By this 1st magnetite and 1 the 1st coil, 19 and 4 the 2nd coil 16a ~ 16d, just can realize lens supports body 5 and move to optical axis direction and X-Y direction.
1st magnetite 17 and rising rocks and corrects the 2nd coil 16a ~ 16d of function viewed from front side, be configured at plane be dimetric each edge, be provided with thus and rock correction function, the lens driver having and rock and correct function need not be carried simultaneously, just can realize identical size and the compact that a small amount of component is counted constructs.
1st magnetite 17 is configured at subtend on the limit of the 1st coil 19 of square shape, so can adopt plate object, and forms simple.
1st coil 19 is from optical axis direction side, in tetragonal ring-type, on the position, quadrangle each limit corresponding to the 1st coil 19, be provided with the 1st magnetite 17, so be compared to, the 1st coil 19 is done circular, just the interval of the 1st coil 19 and magnetite 17 can be realized to make necessarily, and broader subtend area can be obtained, so the raising of the optical axis direction thrust of lens supports body 5 can be realized.
Equally, the 2nd coil 16a ~ 16d is configured on the limit of the 1st coil 19 of square shape, compares so the 1st coil 19 is done conglobate occasion, can and the interval of magnetite 17 make necessarily, and broader subtend area can be obtained
Outer peripheral sidewall 3a is made quadrangle by yoke 3, the 1st magnetite 17 is embedded rear assembling, so easily manufacture by all sides within it.In addition, according to yoke 3, the leakage of the magnetic flux of the 1st magnetite 17 can be reduced, the thrust by the optical axis direction of lens supports body 5 and X-Y direction can be realized.
Below, other example of the present invention is described, in the example of following explanation, the part of identical action effect is played with the 1st above-mentioned example, represent with agreement symbol, omit the explanation of its part, following master is noted that the explanation with the 1st example difference.
With reference to figure 6 ~ Fig. 8, the lens driver 1 in the 2nd example is described.In this 2nd example, on the edge of the peristome 2 of yoke 3, see on the bight in dimetric yoke 3 on front side of it, be provided with projecting madial wall 3b from front side wall 3d to rear direction.The bight that madial wall 3b corresponds to yoke is set as 4, and on the outer circumferential side of each madial wall 3b, be fixed wtih the 2nd magnetite 27.In this 2nd example and the 3rd example described later, front side wall 3d becomes the connecting wall connecting outer peripheral sidewall 3a and madial wall 3b.
The magnetic pole far from it with the magnetic of the 1st magnetite 17 subtend is made in side with the 1st magnetite 17 subtend by this 2nd magnetite 27.In this example, the inner circumferential side of the 1st magnetite 17 is N pole, and the 2nd magnetite 27 is S pole, inner side is N pole.
In addition, madial wall 3b is the outer peripheral face along lens supports body 5, makes arc-shaped, and medial surface is made arc-shaped along the madial wall of yoke by the 2nd magnetite 17, and lateral surface is along the outer peripheral sidewall 3a rectangular face mutually of yoke 3.
According to this 2nd example, in the bight of yoke 3,1st magnetite 17 and coil case 4 are passed through madial wall 3b and the outer peripheral sidewall 3a clamping of yoke 3, so the magnetic density in yoke 3 bight can be improved, can improve further and act on formation the 1st coil 19 of coil case 4 and the thrust of the 2nd coil 16a ~ 16d.In addition, around the 1st coil 19 and the 2nd coil 16a ~ 16d entirety, slightly homogeneous thrust can be made to act on.
Further, the 2nd magnetite 27 is arranged on each bight of yoke 3, can improve the magnetic flux acted on the 1st coil 19 and the 2nd coil 16a ~ 16d, can improve the thrust in optical axis direction and X-Y direction further.
With reference to figure 8 and Fig. 9, the lens driver 1 being relevant to the 3rd example is described.In this 3rd example, front side spring 9 and front side pad 7 are configured at the front side of the front side wall 3d of yoke 3, front side pad 7, front side spring 9, yoke 3, rear side pad 15, rear side spring 11 and base 8 are accommodated in magnetism shielding 29.
In addition, on yoke 3, correspond to the bight of coil case 4, be provided with the inner circumferential sidewall 3b of the inner circumferential side being positioned at coil case 4.Madial wall 3b is along the shape of coil case 4 and the 1st magnetite 17, and in the circumferential direction, 2, left and right is rectangular.
In this 3rd example, corresponding to the bight of coil case 4, the bight of yoke 3 is provided with madial wall, so the magnetic flux of the 1st coil 19 and the 2nd coil 16a ~ 16d acted in yoke 3 bight can be improved.The thrust in optical axis direction and X-Y direction can be improved.
In addition, according to magnetism shielding 29, prevent magnetic flux leakage externally, so, reduce the impact because magnetic flux causes the electronic equipment of periphery and electronic component.
The invention is not restricted to above-mentioned example, only may otherwise do all distortion in the scope of disengaging main idea of the present invention.Such as, spaced 90 degree of the 2nd coil 16a ~ 16d, adjacent setting 2 is also passable.
1st magnetite 17, is not limited to the framework of 4 tabular magnetites 14, does not need framework, corresponding to 4 limits, also tabular magnetite 14 can be configured on 4 corresponding limits, also can adopt 1 annular magnetite in corner.
2nd coil 16a ~ 16d also can be configured in the inner circumferential side of the 1st coil 19.
In 2nd and the 3rd example, the inner circumferential sidewall 3c of yoke 3 also can set continuously round circumferential direction.
In the form of above-mentioned enforcement, lens driver 1 possesses zoom lens, also can make it to have zoom function.
Claims (4)
1. lens driver, has:
The lens supports body of support of lens in inner circumferential;
Reel and be fixed on the 1st coil on lens supports external week;
Lens supports body freely carries out the yoke as a fixed body part of movable support by inner circumferential side;
Be arranged on the 1st magnetite on fixed body; And
Connect the spring of lens supports body and fixed body;
It is characterized in that,
Yoke has front side wall from its profile viewed from the front side of optical axis direction slightly in square shape, and outer peripheral sidewall is along the profile of square shape to the rear side of optical axis direction;
Spring has the front end that inner periphery side portion is fixed on lens supports body, and periphery sidepiece is fixed between the front side wall of yoke and the 1st magnetite and forms fixed body, and wrist connects periphery sidepiece and inner periphery side portion;
1st coil is square shape from its plane viewed from the side of optical axis direction;
1st magnetite is formed at tabular magnetite, and each tabular magnetite faces toward to each limit of dimetric 1st coil, and each tabular magnetite is configured in only each limit inner face of the outer peripheral sidewall of dimetric yoke;
The slightly cylindrical shape of lens supports body, and on the smooth fixed part of the tangential direction of all planes arranged in 4 places of its periphery, be fixed wtih each limit central portion of the 1st coil.
2. lens driver as claimed in claim 1, is characterized in that,
On yoke, correspond to the bight of the 1st coil, be provided with the madial wall of the inner circumferential side being positioned at the 1st coil.
3. auto-focus camera, is characterized in that, the sensor having the lens driver described in claim 1 or 2 and be arranged on the lens imaging side of lens supports body.
4. the mobile terminal apparatus of having camera, is characterized in that the auto-focus camera being equipped with claim 3 record.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011038628A JP2012173713A (en) | 2011-02-24 | 2011-02-24 | Lens drive device, autofocus camera and mobile terminal device with camera |
| JP2011-038628 | 2011-02-24 | ||
| CN201210043428.5A CN102650722B (en) | 2011-02-24 | 2012-02-24 | Lens driving device, auto-focusing camera, and mobile terminal device with camera |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210043428.5A Division CN102650722B (en) | 2011-02-24 | 2012-02-24 | Lens driving device, auto-focusing camera, and mobile terminal device with camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104820272A true CN104820272A (en) | 2015-08-05 |
| CN104820272B CN104820272B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200637707U Withdrawn - After Issue CN202472098U (en) | 2011-02-24 | 2012-02-24 | Lens driving device, automatic focusing camera and mobile terminal device with camera |
| CN201210043428.5A Active CN102650722B (en) | 2011-02-24 | 2012-02-24 | Lens driving device, auto-focusing camera, and mobile terminal device with camera |
| CN201510266707.1A Active CN104820272B (en) | 2011-02-24 | 2012-02-24 | Lens driver, automatic focusing camera and the mobile terminal apparatus with camera |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200637707U Withdrawn - After Issue CN202472098U (en) | 2011-02-24 | 2012-02-24 | Lens driving device, automatic focusing camera and mobile terminal device with camera |
| CN201210043428.5A Active CN102650722B (en) | 2011-02-24 | 2012-02-24 | Lens driving device, auto-focusing camera, and mobile terminal device with camera |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012173713A (en) |
| CN (3) | CN202472098U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931875A (en) * | 2017-05-27 | 2018-12-04 | 新思考电机有限公司 | Bi-axial tilt head, photographic means, Optical devices and electronic equipment |
| CN109143721A (en) * | 2017-06-27 | 2019-01-04 | 新思考电机有限公司 | Tilting action device, photographic device, Optical devices and electronic equipment used for optical part |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012173713A (en) * | 2011-02-24 | 2012-09-10 | Shicoh Engineering Co Ltd | Lens drive device, autofocus camera and mobile terminal device with camera |
| JP2013033186A (en) * | 2011-07-01 | 2013-02-14 | Shicoh Engineering Co Ltd | Lens drive device, autofocus camera and portable terminal device |
| US20140179371A1 (en) * | 2012-12-12 | 2014-06-26 | Somasundaram Ramkumar | Electronic Camera Comprising Mobile Phone Apparatus |
| KR101498356B1 (en) * | 2013-03-14 | 2015-03-11 | 엘지이노텍 주식회사 | Lens actuator |
| JP5765362B2 (en) * | 2013-04-11 | 2015-08-19 | Tdk株式会社 | Lens holding device |
| JP5765361B2 (en) * | 2013-04-11 | 2015-08-19 | Tdk株式会社 | Lens holding device |
| CN106062605A (en) | 2013-10-04 | 2016-10-26 | 郑国星 | Lens driving apparatus |
| TWI468769B (en) | 2013-12-11 | 2015-01-11 | Tdk Taiwan Corp | An apparatus having a spring plate connecting with 3d circuit terminals |
| CN103728712A (en) * | 2013-12-30 | 2014-04-16 | 上海比路电子有限公司 | Lens driving motor structure |
| CN104914547A (en) * | 2015-06-18 | 2015-09-16 | 河南省皓泽电子有限公司 | Novel voice coil motor lens driving device |
| KR20170141523A (en) * | 2016-06-15 | 2017-12-26 | 자화전자(주) | Actuator for ois with integral yoke |
| CN115167062A (en) * | 2022-06-24 | 2022-10-11 | 东莞华贝电子科技有限公司 | Lens anti-shake assembly, anti-shake device and electronic equipment |
| WO2024014714A1 (en) * | 2022-07-15 | 2024-01-18 | 엘지이노텍 주식회사 | Lens driving device, camera device and optical device |
| KR20240043544A (en) * | 2022-09-27 | 2024-04-03 | 엘지이노텍 주식회사 | A lens driving device, a camera device and an optical apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007068273A (en) * | 2005-08-30 | 2007-03-15 | Neomax Co Ltd | Actuator |
| US20110039599A1 (en) * | 2009-08-17 | 2011-02-17 | Shicoh Co., Ltd. | Lens driving device, autofocus camera, and camera-equipped mobile terminal |
| CN202472098U (en) * | 2011-02-24 | 2012-10-03 | 思考电机（上海）有限公司 | Lens driving device, automatic focusing camera and mobile terminal device with camera |
-
2011
- 2011-02-24 JP JP2011038628A patent/JP2012173713A/en not_active Withdrawn
-
2012
- 2012-02-24 CN CN2012200637707U patent/CN202472098U/en not_active Withdrawn - After Issue
- 2012-02-24 CN CN201210043428.5A patent/CN102650722B/en active Active
- 2012-02-24 CN CN201510266707.1A patent/CN104820272B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007068273A (en) * | 2005-08-30 | 2007-03-15 | Neomax Co Ltd | Actuator |
| US20110039599A1 (en) * | 2009-08-17 | 2011-02-17 | Shicoh Co., Ltd. | Lens driving device, autofocus camera, and camera-equipped mobile terminal |
| CN202472098U (en) * | 2011-02-24 | 2012-10-03 | 思考电机（上海）有限公司 | Lens driving device, automatic focusing camera and mobile terminal device with camera |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931875A (en) * | 2017-05-27 | 2018-12-04 | 新思考电机有限公司 | Bi-axial tilt head, photographic means, Optical devices and electronic equipment |
| CN108931875B (en) * | 2017-05-27 | 2023-09-29 | 新思考电机有限公司 | Biaxial tilting movement device, photographing device, optical device, and electronic apparatus |
| CN109143721A (en) * | 2017-06-27 | 2019-01-04 | 新思考电机有限公司 | Tilting action device, photographic device, Optical devices and electronic equipment used for optical part |
| CN109143721B (en) * | 2017-06-27 | 2024-03-15 | 新思考电机有限公司 | Tilting device for optical component, imaging device, optical device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202472098U (en) | 2012-10-03 |
| JP2012173713A (en) | 2012-09-10 |
| CN102650722B (en) | 2015-05-13 |
| CN104820272B (en) | 2017-09-29 |
| CN102650722A (en) | 2012-08-29 |
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