CN202256835U - Lens drive device, automatic focusing camera, and mobile terminal equipped with camera - Google Patents
Lens drive device, automatic focusing camera, and mobile terminal equipped with camera Download PDFInfo
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- CN202256835U CN202256835U CN2011203832694U CN201120383269U CN202256835U CN 202256835 U CN202256835 U CN 202256835U CN 2011203832694 U CN2011203832694 U CN 2011203832694U CN 201120383269 U CN201120383269 U CN 201120383269U CN 202256835 U CN202256835 U CN 202256835U
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Abstract
Provided are a lens drive device, an automatic focusing camera, and a mobile terminal equipped with a camera, wherein the lens drive device is easy to be manufactured, hardly allows driving of a lens support body to be obstructed, enables the lens support body to move toward an optical axis direction, and enables handshaking correction to be realized for moving. Among four springs 12a to 12d for supporting a lens support body 5 in a free and mobile manner, one end of a first coil 19 is connected with the spring 12b on the side of a power supply; one end of a second coil 16a, 16c and one end of another second coil 16b, 16d are respectively connected with the spring 12a and the spring 12c on the side of the power supply; the other ends of each coil including 19, 16a to 16d are respectively connected with the spring 12d on the side of a reference potential portion; and the coils including 19, 16a to 16d are together connected with the four springs 12a to 12d.
Description
Technical field
The utility model is the portable terminal of focusing camera and having camera about lens driver, automatically.
Background technology
Following content is disclosed in the patent documentation 1 (TOHKEMY 2009-80217 communique).That is, be provided with and be arranged on the optical axis direction rear side of lens supports body and support the rear side spring of lens supports body at optical axis direction with moving freely along the 1st coil of the circumferential coiling of lens supports body.This rear side spring body is made up of side's spring section and these two springs of other party spring section; One side's coil line end of the 1st coil is connected side's spring section; The other party coil line end of the 1st coil is connected the other party spring section; Via the rear side spring body to the 1st coil electricity, thereby the lens supports body is moved to optical axis direction.
On the other hand, the utility model people has developed following technology.That is, be provided with along the 1st coil of the circumferential coiling of lens supports body, and along circumferential interval 90 degree of lens supports body 2 the 2nd coils be set, through to the 1st coil electricity the lens supports body is moved to optical axis direction, it is mobile to focus; Predetermined coil electricity through in 2 the 2nd coils makes the lens supports body move to the X-Y direction, trembles correction thereby the lens supports body is carried out hand.
The utility model content
But, be arranged on 2 the 2nd coils on the lens supports body, and to the occasion of each the 2nd coil electricity, as to the electrical path of the 2nd coil and be used for the rear side spring of the 1st coil, just be done for.This occasion can be considered from lens driver, to guide to the outside to an end of the winding wire of the 2nd coil and his end, and is directly connected to outside power supply terminal or control part.
, from lens driver, guide to the outside to an end of the winding wire of the 2nd coil and his end, and be directly connected to outside power supply terminal or control part, this needs time-consuming outwards to draw each bar line, connection power supply terminal or control part.Simultaneously, the lead-in wire of coil can be in the way, and has the problem of the driving that hinders the lens supports body.
Therefore; The purpose of the utility model provides easy manufacturing and can not hinder the driving of lens supports body, can moving and can carry out hand and tremble the lens driver that moves of correction, focus camera and with the portable terminal of camera automatically to the optical axis direction of lens supports body.
The lens driver of described utility model comprises: lens supports body, its support of lens; Fixed body, it is arranged on the outer circumferential side of lens supports body; 4 springs, it is arranged at least one side of optical axis direction of lens supports body, and an end is installed on the fixed body, and the other end is installed on the lens supports body, and is supporting the lens supports body with moving freely; The 1st coil, it is along the periphery that circumferentially is wound on the lens supports body; 2 the 2nd coils, it is along circumferentially with the arranged spaced of the 90 degree periphery at the lens supports body; And at least 1 magnetite, it is arranged on fixed body, and is positioned at the outer circumferential side of the 1st coil; Wherein, The outer peripheral face of magnetite and the 1st coil is relative, and is simultaneously relative with the 2nd coil in the position of the 2nd coil, and 3 springs in 4 springs are connecting power supply; A remaining spring is connecting reference potential portion; One end of each coil is connecting the spring of different mains sides respectively, and his end of each coil connecting the spring of reference potential portion side, feeds electric current via amounting to 4 springs to each coil; Make the lens supports body when optical axis direction moves, feed DC current to the 1st coil; Make the lens supports body when the X-Y direction with light shaft positive cross moves, feed predetermined DC current to the 2nd predetermined coil.
The focusing of lens supports body move be through to the 1st coil electricity and and magnetite between produce the thrust of optical axis direction, this thrust is to optical axis direction mobile lens supporter; Hand tremble revise be through to the 2nd coil electricity arbitrarily and and magnetite between produce the thrust of the radial direction of lens supports body, this thrust makes the lens supports body move to the X-Y direction with light shaft positive cross.So just can focus and move and hand is trembled to revise and moved the lens supports body.
In 4 springs of support of lens supporter; Through being connected to side's coil line end of side's coil line end of the 1st coil and 2 the 2nd coils on 3 different springs of difference of mains side; Be connected to the spring of reference potential portion side to the other party coil line end of the other party coil line end of the 1st coil and 2 the 2nd coils, switch on individually to each coil with amounting to 4 springs.Like this, need not to draw the winding wire of each coil to the outside simple structure and manufacturing easily.
Be not drawn out to the coil line end outside of lens driver, hinder moving of lens supports body so can prevent winding wire.
The lens driver of utility model, its further characteristics be, the circumferential array that each spring in 4 springs all flushes along the lens supports body, and have: the interior all side fixed parts that are fixed on the lens supports body; Be fixed on the outer circumferential side fixed part on the fixed body; And the arm between all side fixed parts and the outer circumferential side fixed part in being arranged on, arm circumferentially has bend.
4 springs are high the arranging such as circumferential along the lens supports body, become big so can prevent the size of optical axis direction.Also have, the arm of each spring has the bend at circumferential skewing, and such formation can be dwindled the space of arm, can make 4 spring miniaturizations, and volume is little.
To 4 springs of coil electricity is along the circumferential array of lens supports body, thus be configured in the lens supports body around coil line end and the attended operation of spring of each coil just can compile, this further makes easy to manufacture.
Described lens driver; Its further characteristics are; Each the 2nd coil has 2 coiler parts that connecting of series connection, and each coiler part is provided with 4 along the periphery of lens supports body is equally spaced, and 1 the 2nd coil is disposing 2 coiler parts on the position relative to each other.Need not to increase the quantity of the spring of connecting coil line end, just can improve the driving force of X-Y direction.
The automatic focusing camera of described utility model is characterized in, comprising: arbitrary aforesaid lens driver; And has the 1st power supply; The control part of the 2nd power supply and reference potential portion; Wherein, Control part and 2 the 2nd coils constitute 2 T type bridgt circuits, and 2 T type bridgt circuits are connected between the 1st power supply and the 2nd power supply side by side, each T type bridgt circuit series connection connecting 2 on-off elements; One end of one the 2nd coil and the spring that is connected between 2 on-off elements of a T type bridgt circuit are connected; One end of another the 2nd coil and the spring that is connected between 2 on-off elements of another T type bridgt circuit are connected, and an end of the 1st coil is connected with spring on being connected the 1st power supply or the 2nd power supply, and his end of each coil is connected with the spring on being connected reference potential portion.
When the focusing camera possesses each advantage of aforementioned lens driver automatically; Also but 2 of Xiang Yifang and other party the 2nd coils feed the positive and negative electric current of direction respectively; Make the lens supports body when the directions X with the optical axis direction quadrature moves, can to+directions X and-directions X moves, and is same; For the Y direction, also can to+Y and-the Y direction moves.
Described portable terminal with camera is characterized in that it is carrying aforesaid automatic focusing camera.
Portable terminal is meant, such as, terminal devices such as mobile phone, palm PC (PDA), PC.
Description of drawings
Fig. 1 is the planimetric map of the annexation of rear side spring body and each coil in the lens driver in the utility model example.
Fig. 2 is the circuit diagram of each coil and each control part in the utility model example.
(a) of Fig. 3 is the horizontal sectional view of the lens driver in the utility model example; (b) be the mode chart that shows the effect of the B portion in (a).
Fig. 4 is lens driver, the A-A sectional view shown in Figure 7 in the utility model example.
Fig. 5 is the calcspar of the relation of the magazine coil case of automatic focusing and drive division in this example.
Fig. 6 has shown the exploded perspective view of the lens driver in this example.
Fig. 7 has shown the oblique view of the outward appearance of the lens driver in this example.
1 lens driver
5 lens supports bodies
8 bases
11 rear side springs
12a～12d spring
19 the 1st coils
16a～16d the 2nd coil
17 magnetites
Embodiment
Below, be elaborated with reference to the example of accompanying drawing with regard to the utility model.Drive unit 1 in this example is the lens driver that is assembled in the automatic focusing camera in the mobile phone.
As shown in Figure 6, this lens driver 1 has: the lens supports body 5 that is positioned at week and support of lens (not shown); Can move freely the yoke 3 of ground lens mounting supporter 5 in interior all sides; Be configured in the framework 7 and the front side spring body 9 of the optical axis direction front side of yoke 3; Be configured in the base 8 and the rear side spring body 11 of the rear side of yoke 3.Disposing rear side pad 15 between rear side spring body 11 and the yoke 3 with insulativity.The periphery of lens supports body 5 is being fixed coil case 4.Fixed body comprises yoke 3, framework 7 and base 8.
The planimetric map of yoke 3 its periphery from the front side is quadrangle, and the planimetric map in interior week is circular ring-type.Like Fig. 4 and shown in Figure 6, this yoke 3 is made up of outer peripheral sidewall 3a and radial direction wall 3c, and it is the L word shape that outer peripheral sidewall 3a and radial direction wall 3c form the cross section together.
Like Fig. 3 (a) and shown in Figure 6,, fixing magnetite 17 on the inner peripheral surface of outer peripheral sidewall 3a in each bight 14 of yoke 3.17 of magnetites are arranged on bight 14.In addition, dimetric bight 14 is chamfer shape.
Its plane is trapezoidal generally along the bight 14 of the chamfering of yoke 3 to each magnetite 17 from the front side, and all sides are circular-arc along the outer peripheral face of the 1st coil 19 (afterwards stating) in it.Also have, magnetite 17 is inequality at the magnetic pole of interior all sides and outer circumferential side, and for example, interior all sides are the N utmost point, and outer circumferential side is the S utmost point.In addition, Fig. 3 (a) is the horizontal section of lens supports body 1, but has but omitted lens supports body 5.
It is approximately cylindric that lens supports body 5 is, and fixing coil case 4 on the periphery.Coil case 4 is made up of 1 the 1st coil 19 and 4 the 2nd coiler part 16a～16d.(16a～16d) is along circumferentially by uniformly-spaced (intervals of 90 degree) configuration by this order for 4 the 2nd coiler part 16a～16d.Outboard profile is in the form of a ring along the radial direction of lens supports body 5 outside respectively for each the 2nd coiler part 16a～16d.
In this example, be connected in series 2 coiler part 16a and 16c, thereby constitute a side the 2nd coil; Be connected in series 2 coiler part 16b and 16d, thereby constitute other party the 2nd coil.That is to say that coil case 4 is being provided with 2 the 2nd coils of quadrature.
The 1st coil 19 is on the circumferential whole week of lens supports body 5, reel circular.
Like Fig. 3 (a) and shown in Figure 5; Each the 2nd coiler part 16a～16d overlaps the outer peripheral face of the 1st coil 19, and the front side edge portion 22 of optical axis direction front side, the back side edge portion 25 of optical axis direction rear side and the left and right sides side portion 24,26 that is parallel to optical axis direction overlap on the 1st coil 19.
Shown in Fig. 3 (a); It is relative with the 2nd coiler part 16a～16d that each magnetite 17 is configured to; The circumferential size of magnetite 17 is approximately identical with the circumferential size of the 2nd coiler part 16a～16d; Simultaneously, the area of the area of the inner peripheral surface 17a of magnetite 17 and relative the 2nd coiler part 16a～16d is approximately identical.
In addition, each magnetite 17 is relative with the 1st coil 19 via the 2nd relative coiler part 16a～16d.
Shown in Fig. 3 (b); The direction of the magnetic lines of flux that the right side (left side) sidepiece of the 2nd coiler part 16a～16d from the inner peripheral surface 17a of magnetite 17 comes out has the composition of side and circumferencial direction right (left side) side in the radial direction, and to leave the inner peripheral surface 17a of magnetite 17 more just more crooked for (left side) side to the right.Same, the magnetic lines of flux that comes out from the optical axis direction front side portion among the inner peripheral surface 17a of magnetite 17 leaves inner peripheral surface 17a more with regard to more forwards lateral bending is bent.Also have, the direction of the magnetic lines of flux that comes out from the optical axis direction rear sides among the inner peripheral surface 17a of magnetite 17 have radius square in the composition at side and optical axis direction rear, leave inner peripheral surface 17a lateral bending song more rearward more.
For example; When feeding to the 1st coil 19 when being seen as anticlockwise electric current I 1 from the front side; The magnetic linkage composition of side just works in the radial direction; According to fleming ' s left hand rule (husband Luo engrave left-hand rule), just produce thrust to optical axis direction the place ahead, lens supports body 5 just moves to optical axis direction the place ahead.When feeding to the 2nd coiler part 16a～16d when foreign side is seen as anticlockwise electric current I 2; Front side edge portion 22 in the optical axis direction front side of each the 2nd coiler part 16a～16d; The magnetic linkage composition in optical axis direction the place ahead just works, and produces the thrust of side in radial direction.Same, also produce the thrust of side in radial direction in back side edge portion 25, right edge portion 26, the left side portion 24 of the 2nd coiler part 16a～16d.Just because of this, lens supports body 5 side in radial direction moves.
That is to say, at a side the 2nd coiler part 16a, 16c, the magnetic flux in the magnetic lines of flux of magnetite 17 along the composition of radial direction and the 2nd coiler part 16a, 16c quadrature; With through to a side the 2nd coiler part 16a, 16c feeds electric current, according to fleming ' s left hand rule; Like Fig. 3 (a) and shown in Figure 5; Thrust E is just in the radial direction effect of lens supports body 5, other party the 2nd coiler part 16b, 16d too, thrust F is in the radial direction effect of lens supports body 5.Thrust E and thrust F mutually orthogonal.
As shown in Figure 5, the 1st coil 19 is connecting Z drive division 32, and each the 2nd coiler part 16a～16d is connecting X-Y drive division 33, comes the electric current of predetermined value from each drive division 32,33 streams.In addition, in Fig. 5, the connecting line of Z drive division 32 shown in the dotted line and the 1st coil 19, and the connecting line of X-Y drive division 33 and the 2nd coiler part 16a～16d has only shown and is included in the figure that the power supply of Z drive division with the X-Y drive division is connected.
In this example; The 2nd coiler part 16a and the 16c that constitute a side the 2nd coil are connected in series; The 2nd coiler part 16b and the 16d that constitute other party the 2nd coil are connected in series; Like Fig. 3 (a) and shown in Figure 5, a side the 2nd coiler part 16a and 16c drive along the direction of thrust E together, and other party the 2nd coiler part 16b and 16d drive along the direction of thrust F together.
As shown in Figure 5, for example,, lens supports body 5 is moved to focal position under the occasion of (moving to optical axis direction) at Z drive division 32, feed electric current Z to the 1st coil 19.
Equally, carry out hand and tremble when revising,, feed electric current E to a side the 2nd coiler part 16a and 16c, to E direction mobile lens supporter 5 at X-Y drive division 33; Feed electric current F to other party the 2nd coiler part 16b and 16d, to F direction mobile lens supporter 5.Like this, lens supports body 5 just moves to carry out hand to the E-F direction and trembles correction.
In addition, like Fig. 3 (a) and shown in Figure 5, symbols Z, E, F have shown the direction and the size of the thrust that produces according to the electric current that feeds.
But; Shown in Fig. 3 (a), in this example, directions X is an edge direction that is seen as the yoke 3 of square shape from the front; The Y direction is the direction on adjacent limit that is seen as the yoke 3 of square shape from the front; About thrust E, the F that produces in the diagonal of yoke 3, the component EX of directions X and FX's and act on, the component EY of Y direction and FY's and act on as the thrust of Y direction as the thrust of directions X.X-Y drive division 33 control like this so that: the component of each directions X with EX+FX just as directions X thrust, the component of each Y direction with EY+FY just as Y direction thrust.
As shown in Figure 6, the state of nature of front side spring body 9 before assembling is tabular, and it is made up of following: the periphery sidepiece 9a of the ring-type that plan view is rectangular; Be configured in the interior week of periphery sidepiece 9a, and plan view is circular-arc interior all sidepiece 9b; And 4 arm 9c that connect periphery sidepiece 9a and interior all sidepiece 9b.Front side spring body 9 is freely to the distortion of Z direction and X-Y direction.
Rear side spring body 11 is to constitute 4 spring 12a～12d along circumferential array, and the state of nature before assembling is a tabular on the whole, the ring-type that the periphery plan view is rectangular, and interior all plan views are rounded.
As shown in Figure 1,4 spring 12a～12d have respectively: be fixed on the interior all side fixed part 11b on the lens supports body 5; Be installed in the outer circumferential side fixed part 11a on the base 8; And the arm 11c between all side fixed part 11b and the outer circumferential side fixed part 11a in being arranged on.Arm 11c can be to Z direction and X-Y direction elastic deformation at the circumferential bend 20 that bending is being set of lens supports body.
In Fig. 1, the profile of rear side spring body 11 is about square shape, and be split into 4 so that dimetric 4 angles be separated, relative spring 12a and 12c, the shape of 12b and 12d is identical, and is point symmetry.
At rear side spring body 11,2 the 2nd coiler part 16a that connecting of series connection, the end of 16c are connecting interior all side fixed part 11b of spring 12a; 2 the 2nd coiler part 16b that connecting of series connection, the end of 16d is connecting interior all side fixed part 11b of spring 12c, and an end of the 1st coil 19 is connecting interior all side fixed part 11b of spring 12b.The 2nd coiler part 16a, his end of 16c, the 2nd coiler part 16b, his end of 16d and his end of the 1st coil 19 are connecting interior all side fixed part 11b of spring 12d.
Like Fig. 1 and shown in Figure 2, spring 12a, each outer circumferential side fixed part 11a of 12c links to each other with X-Y drive division 33 respectively, and each outer circumferential side fixed part 11a of spring 12b links to each other with Z drive division 32.The outer circumferential side fixed part 11a of spring 12d is set to reference potential, is connecting the common reference potential portion 35 that is provided with on Z drive division 32, the X-Y drive division 33.In this example, reference potential is a ground connection.
Here, with reference to Fig. 2, describe with regard to the circuit of X-Y drive division 33.This circuit comprises: the 1st power supply 34; The 2nd power supply 36; Reference potential portion 35; And 2 T type bridgt circuit 38a, 38b.2 T type bridgt circuit 38a, 38b is connected in parallel between the 1st power supply 34 and the 2nd power supply 36.One of them T type bridgt circuit 38a is 2 on-off element Q1, and Q2 is connected in series, and 2 on-off element Q1 are connecting the spring 12a of mains side between the Q2.Same, wherein another T type bridgt circuit 38b is 2 on-off element Q3, and Q4 is connected in series, and 2 on-off element Q3 are connecting the spring 12c of mains side between the Q4.The end of the 2nd coiler part 16a is connected on-off element Q1 via spring 12a; Between the Q2, his end of the 2nd coiler part 16c is connected reference potential portion 35 via spring 12d, like this; The 2nd coiler part 16a, 16c have just constituted the part of T type bridgt circuit 38a.The 2nd coiler part 16b, 16d also are same.
The voltage of the 1st power supply 34 is V
EE, voltage V
EEIt is negative voltage.The voltage of the 2nd power supply 36 is V
CC, voltage V
CCIt is positive voltage.Negative voltage V
EEWith positive voltage V
CCAbsolute value be identical.On-off element Q1～Q4 is a transistor.
On the other hand, in Z drive division 32, there is no need to carry bridgt circuit.Can be connected the 1st power supply 34 to an end of the 1st coil 19 via spring 12b, he is connected reference potential portion 35 via spring 12d by end.Also can be the 1st power supply 34 as the 2nd power supply.
Each outer circumferential side fixed part 11a of 4 spring 12a～12d is installed on the base 8, simultaneously, is being pressed by yoke 3 through pad 15.Also have, all side fixed part 11b are fixed on the rear end of lens supports body 5 in each.
In addition, the periphery sidepiece 9a of front side spring body 9 is clamped between framework 7 and the yoke 3, and interior all sidepiece 9b are fixed on the front end of lens supports body 5.
As shown in Figure 4, lens supports body 5 passes through front side spring body 9 and rear side spring body 11, is supported on along optical axis direction (Z direction) and X-Y direction to move freely.
Then; Through feeding electric current to the 1st coil 19; When lens supports body 5 when move in optical axis direction the place ahead, lens supports body 5 stops at the position that the 1st power (application of force of the fore-and-aft direction of front side spring body 9 and rear side spring body 11 make a concerted effort) and the 2nd power (electromagnetic force of generation between the 1st coil 19 and the magnetite 17) balance each other.
The occasion that lens supports body 5 moves to the X-Y direction; Through feed the electric current of predetermined value to predetermined the 2nd coiler part 16a～16d, just stop at the position that the 1st power (making a concerted effort of the spring of the X-Y direction of front side spring body 9 and rear side spring body 11) and the 2nd power (electromagnetic force that produces between the 2nd coiler part 16a～16d and the magnetite 17) balance each other.
Below, describe with regard to assembling, effect and the effect of the lens driver in the utility model example 1.Before the assembling of lens driver 1, thereby form coil case 4 to the outer peripheral face that each the 2nd coiler part 16a～16d is bonded and fixed at the 1st coil 19, be fixed on the periphery of lens supports body 5 again.In addition, coiler part 16a is being connected of series connection with 16c, and coiler part 16b is being connected with the 16d series connection.
About the assembling of lens driver 1, as shown in Figure 6, assemble according to following order.Rear side spring body 11, rear side pad 15, coil case 4 be fixed in the lens supports body 5 of its periphery, yoke 3, front side spring body 9 and the framework 7 that each magnetite 17 is fixed on the bight 14 of outer peripheral sidewall 3a is fixed on the base 8 successively.
Fixing the lens supports body 5 of coil case 4 and fixing the assembling of the yoke 3 of magnetite 17 with inner peripheral surface, is to insert lens supports body 5 from side direction front side thereafter in interior week of yoke 3.
Be connected each coil line end of the 1st coil 19 and the 2nd coiler part 16a～16d each spring 12a～12d that constitutes rear side spring body 11.Specifically, as shown in Figure 1, be connected interior all side fixed part 11b of spring 12b to an end of the 1st coil case 19, be connected his end interior all side fixed part 11b of spring 12d.The 2nd coiler part 16a that is connecting of series connection, the end of 16c are connected interior all side fixed part 11b of spring 12a, are connected his end interior all side fixed part 11b of spring 12d.The 2nd coiler part 16b that is connecting of series connection, the end of 16d are connected interior all side fixed part 11b of spring 12c, are connected his end interior all side fixed part 11b of spring 12d.Each connection for example, can be carried out through welding.
In addition, the outer circumferential side fixed part 11a of spring 12b and the mains side of Z drive division 32 are connected, and each outer circumferential side fixed part 11a of spring 12a, 12c and the mains side of X-Y drive division 33 are connected.Also have, the outer circumferential side fixed part 11a of spring 12d is connected with the reference potential portion 35 of Z drive division, X-Y drive division 33.
The driving of the lens driver 1 in this example, in Fig. 5, the peak value of the high pass composition (contrast) that Z drive division 32 just receives from imageing sensor 31 compare, and meanwhile lens supports body 5 to the focal position, the Z direction is carried out straight line and is moved.
Lens supports body 5 carries out straight line when moving to the Z direction, just stop at the 1st power (making a concerted effort of the application of force of front side spring body 9 and rear side spring body 11) and the 2nd power (through feed electric current that current values are Z to the 1st coil 19 and magnetite 17 between the electromagnetic force of generation) position of balance.
The X-Y control (hand is trembled correction) of lens supports body 5 is; Tremble signal through receptions such as gyro modules as the hand of XY direction; The hand of directions X and Y direction is trembled correction to perform calculations; Will be to the current value E of the 2nd coiler part 16a～16d energising, F feeds the 2nd coiler part 16a, 16c and the 2nd coiler part 16b, 16d.
Among T type bridgt circuit 38a, if apply voltage to the base stage (base) of on-off element Q1, on-off element Q1 is with regard to conducting therein, and electric current is just from voltage V
CCPower supply flow to on-off element Q1 successively, the 2nd coiler part 16a, 16c, reference potential portion 35.If the base stage (base) to on-off element Q2 applies voltage, on-off element Q2 is with regard to conducting, and electric current just flows to the 2nd coiler part 16a from reference potential portion 35 successively, 16c, on-off element Q2, the 1st power supply 34.
That is to say,,, can feed electric current among the 16c, also can feed backward electric current along direction at the 2nd coiler part 16a through using T type bridgt circuit 38a.Like this, state in the early stage when lens supports body 5 is positioned near the center of E direction, through changing sense of current, can make lens supports body 5 move to+E direction, and lens supports body 5 is moved to-E direction.
Another T type bridgt circuit 38b is to replace with on-off element Q3 to on-off element Q1 too, and on-off element Q2 replaces with on-off element Q4; Spring 12a replaces with spring 12c; The 2nd coiler part 16a, 16c replace with the 2nd coiler part 16b, the flow direction of the electric current during 16d.Like this, state in the early stage when lens supports body 5 is positioned near the center of F direction, through changing sense of current, can make lens supports body 5 move to+F direction, and lens supports body 5 is moved to-F direction.
According to this example, it is to optical axis direction mobile lens supporter 5 through switching on to the 1st coil 19 that the focusing of lens supports body 5 is moved; Hand is trembled and revised is that electric current through feed predetermined value to the 2nd coiler part 16a, 16c and the 2nd coiler part 16b, 16d arbitrarily makes lens supports body 5 move to the X-Y direction.So just can focus and move and hand is trembled to revise and moved lens supports body 5.
Rear side spring body 11 is made up of 4 spring 12a～12d; 2 coil line ends of 2 the coil line ends of 2 coil line ends of the 1st coil 19, a side the 2nd coiler part 16a, 16c and other party the 2nd coiler part 16b, 16d; Amount to 6 coil line ends and only be connected to 4 spring 12a～12d that constitute rear side spring body 11; So, need not to draw the winding wire of each coil to the outside of lens driver 1 simple structure and manufacturing easily.
Be arranged on optical axis direction one side of lens supports body 5 to the rear side spring body 11 of the 1st coil 19 and the 2nd coiler part 16a～16d energising; So; Be configured in the 1st coil 19 on every side of lens supports body 5; Each coil line end of 2 the 2nd coiler part 16a～16d and the attended operation of spring 12a～12d just can pool together, and this further makes easy to manufacture.
Be not drawn out to the outside of lens driver 1 to each coil line end of the 1st coil 19, the 2 coiler part 16a～16d, hinder moving of lens supports body so can prevent winding wire.
Connecting each coil 19,4 spring 12a～12d of the coil line end of 16a～16d are along the arrangement of circumferentially the flushing of lens supports body 5 height such as () flush, become big so can prevent the size of optical axis direction.Also have, each arm 11c of each spring 12a～12d has in the such formation of the bend of circumferential skewing 20, so can dwindle the space of each arm 11c, can make 4 spring 12a～12d miniaturizations, and volume is little.
Each outer circumferential side fixed part 11a of 4 spring 12a～12d is pressed on the base 8 by yoke 3 through the rear side pad 15 of insulation, so, can being pressed in 4 spring 12a～12d simultaneously on the base 8 through yoke 3, assembling is simple, and is easy to manufacture.
The 2nd coiler part 16a～16d uniformly-spaced is provided with 4 along the outer periderm of lens supports body 5; In opposite directions and right 2 the 2nd coiler part 16a and 16c, 16b and 16d be connected in series respectively; So; Need not to increase the quantity of the spring of the coil line end that connects each coil, just can improve the driving force of X-Y direction.
The utility model is not limited to above-mentioned example, in the scope that does not break away from the utility model main idea, can do all distortion.For example; Can make the profile of rear side spring body 11 circular for approximately; The profile of the outer circumferential side fixed part 11a of the spring 12a～12d of formation rear side spring body 11 is a circular shape, base 8, and the profile of pad 15 and yoke 3 is come the outer circumferential side fixed part 11a of pressing spring 12a～12d for circle.
The 2nd coiler part 16a～16d is not limited to be provided with 4, also can make a side and other party the 2nd coil have only 1 coiler part to amount to 2 coiler parts respectively, and make it apart from one another by 90 degree.
In 4 the 2nd coiler part 16a～16d, also can make: the 2nd coil 16a, the 16c that are being connected in series dispose along directions X, through to coiler part 16a, and 16c energising and lens supports body 5 is moved to directions X; The 2nd coil 16b that is being connected in series, 16d be along Y direction configuration, through to coiler part 16b, and 16d energising and lens supports body 5 is moved to the Y direction.
Though magnetite 17 circumferentially is being provided with 4,, also can be arranged to 1 ring-type magnetite.Also have, except the magnetite relative, also magnetite can be set, make it relative with the outer peripheral face of the 1st coil 19 with each the 2nd coil.
Also can dispose magnetite 17 like this so that the 2nd coiler part 16a～16d, for example, with the face of light shaft positive cross in winding, the magnetic lines of flux of intersection becomes optical axis direction.
Though 4 spring 12a～12d just utilize rear side spring body 11 to constitute,, also utilize front side spring body 9 to constitute.For example, also can be 3 spring 12a～12c as rear side spring body 11, spring 12d as front side spring body 9, or 4 spring 12a～12d together as front side spring body 9.
Claims (5)
1. lens driver comprises:
The lens supports body, its support of lens;
Fixed body, it is arranged on the outer circumferential side of lens supports body;
4 springs, it is arranged at least one side of the optical axis direction of lens supports body, and an end is installed on the fixed body, and the other end is installed on the lens supports body, and is supporting the lens supports body with moving freely;
The 1st coil, it is along the periphery that circumferentially is wound on the lens supports body;
2 the 2nd coils, it is along circumferentially with the arranged spaced of the 90 degree periphery at the lens supports body; And
At least 1 magnetite, it is arranged on fixed body, and is positioned at the outer circumferential side of the 1st coil; It is characterized in that,
The outer peripheral face of magnetite and the 1st coil is relative; Simultaneously relative with the 2nd coil in the position of the 2nd coil; 3 springs in 4 springs are connecting power supply, and 1 remaining spring is connecting reference potential portion, and an end of each coil is connecting the spring of different mains sides respectively; And his end of each coil is connecting the spring of reference potential portion side, feeds electric current via amounting to 4 springs to each coil; The 1st coil feeds DC current, and the lens supports body is moved to optical axis direction; The 2nd predetermined coil feeds predetermined DC current, and the lens supports body is moved to the X-Y direction with light shaft positive cross.
2. lens driver as claimed in claim 1 is characterized in that,
The circumferential array that each spring in 4 springs all flushes along the lens supports body, and have: the interior all side fixed parts that are fixed on the lens supports body; Be fixed on the outer circumferential side fixed part on the fixed body; And the arm between all side fixed parts and the outer circumferential side fixed part in being arranged on, arm circumferentially has bend.
3. lens driver as claimed in claim 2 is characterized in that,
Each the 2nd coil has 2 coiler parts that connecting of series connection, and each coiler part is provided with 4 along the periphery of lens supports body is equally spaced, and 1 the 2nd coil is disposing 2 coiler parts on the position relative to each other.
4. the camera of focusing automatically is characterized in that, comprising:
Each described lens driver like claim 1～3; And
Control part, it has the 1st power supply, the 2nd power supply and reference potential portion,
Wherein,
Control part and 2 the 2nd coils constitute 2 T type bridgt circuits; 2 T type bridgt circuits are connected between the 1st power supply and the 2nd power supply side by side; The series connection of each T type bridgt circuit connecting 2 on-off elements; One end of one the 2nd coil and the spring that is connected between 2 on-off elements of a T type bridgt circuit are connected; One end of another the 2nd coil and the spring that is connected between 2 on-off elements of another T type bridgt circuit are connected, and an end of the 1st coil is connected with spring on being connected the 1st power supply or the 2nd power supply, and his end of each coil is connected with the spring on being connected reference potential portion.
5. the portable terminal with camera is characterized in that, is carrying automatic focusing camera as claimed in claim 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010223603A JP2012078555A (en) | 2010-10-01 | 2010-10-01 | Lens drive device, autofocus camera, and mobile terminal with camera |
| JP2010-223603 | 2010-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256835U true CN202256835U (en) | 2012-05-30 |
Family
ID=46008413
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203832694U Expired - Lifetime CN202256835U (en) | 2010-10-01 | 2011-10-10 | Lens drive device, automatic focusing camera, and mobile terminal equipped with camera |
| CN201110305130.2A Active CN102445743B (en) | 2010-10-01 | 2011-10-10 | Lens driving device, automatic focusing camera and mobile terminal with attached camera |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110305130.2A Active CN102445743B (en) | 2010-10-01 | 2011-10-10 | Lens driving device, automatic focusing camera and mobile terminal with attached camera |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012078555A (en) |
| CN (2) | CN202256835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445743A (en) * | 2010-10-01 | 2012-05-09 | 思考电机（上海）有限公司 | Lens driving device, automatic focusing camera and mobile terminal with attached camera |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102311663B1 (en) * | 2015-03-18 | 2021-10-13 | 엘지이노텍 주식회사 | A lens moving unit and a camera module including the same |
| US10935752B2 (en) | 2016-07-21 | 2021-03-02 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device, which include same |
| KR102575584B1 (en) * | 2016-07-21 | 2023-09-06 | 엘지이노텍 주식회사 | A lens moving unit, and camera module and optical instrument including the same |
| KR102575585B1 (en) * | 2018-09-20 | 2023-09-06 | 엘지이노텍 주식회사 | Lens moving apparatus, camera module and optical instrument including the same |
| CN113669565A (en) * | 2020-04-30 | 2021-11-19 | 新思考电机有限公司 | Two-axis tilting device, camera device, and electronic apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008052196A (en) * | 2006-08-28 | 2008-03-06 | Alps Electric Co Ltd | Lens driving unit |
| JP4495741B2 (en) * | 2006-10-04 | 2010-07-07 | 日本電産サンキョー株式会社 | Lens drive device |
| JP5004579B2 (en) * | 2006-12-28 | 2012-08-22 | 日本電産サンキョー株式会社 | Lens drive device |
| JP2009080217A (en) * | 2007-09-26 | 2009-04-16 | Shicoh Engineering Co Ltd | Lens driving device, camera and mobil phone with camera |
| JP5140573B2 (en) * | 2008-04-30 | 2013-02-06 | 日本電産サンキョー株式会社 | Optical unit with shake correction function |
| WO2009139543A1 (en) * | 2008-05-14 | 2009-11-19 | (주)하이소닉 | Photography device with anti-shake function |
| JP5571089B2 (en) * | 2008-10-14 | 2014-08-13 | ホンコン・アプライド・サイエンス・アンド・テクノロジー・リサーチ・インスティテュート・カンパニー・リミテッド | Compound drive lens actuator |
| JP2012078555A (en) * | 2010-10-01 | 2012-04-19 | Shicoh Engineering Co Ltd | Lens drive device, autofocus camera, and mobile terminal with camera |
-
2010
- 2010-10-01 JP JP2010223603A patent/JP2012078555A/en active Pending
-
2011
- 2011-10-10 CN CN2011203832694U patent/CN202256835U/en not_active Expired - Lifetime
- 2011-10-10 CN CN201110305130.2A patent/CN102445743B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445743A (en) * | 2010-10-01 | 2012-05-09 | 思考电机（上海）有限公司 | Lens driving device, automatic focusing camera and mobile terminal with attached camera |
| CN102445743B (en) * | 2010-10-01 | 2014-10-29 | 思考电机（上海）有限公司 | Lens driving device, automatic focusing camera and mobile terminal with attached camera |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012078555A (en) | 2012-04-19 |
| CN102445743B (en) | 2014-10-29 |
| CN102445743A (en) | 2012-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |