CN109901275A

CN109901275A - The method of SMA wire is wound on optical module

Info

Publication number: CN109901275A
Application number: CN201711299077.3A
Authority: CN
Inventors: 陈振宇; 涂洪德; 方银丽; 邱辉
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2019-06-18
Anticipated expiration: 2037-12-08
Also published as: CN109901275B; WO2019109733A1

Abstract

The method that this application discloses a kind of to wind SMA wire on optical module, wherein, optical module includes having the lens module of outer framework and the fixation device of one group of diagonal zones of lens module being arranged in, the described method includes: around outer framework installation SMA wire to form four sides facing each other, wherein, on each side, SMA wire includes the first SMA wire and the second SMA wire, first SMA wire and the second SMA wire are arranged to intersected with each other but do not contact, wherein, SMA wire is in tensioned state during the installation process.

Description

The method of SMA wire is wound on optical module

Technical field

This application involves the sides that marmem (Shape Memory Alloys, SMA) line is wound on optical module Method.

Background technique

Optical module on existing smart machine is essentially all to drive camera lens longitudinal movement come real by motor mechanism Existing auto-focusing, but motor carrier, which drives camera lens to carry out longitudinal movement, needs certain movement travel, therefore in smart machine It is middle to need to reserve reserved space for the longitudinal movement of camera lens.By taking smart phone as an example, as smart phone becomes thin, in mobile phone The smaller and smaller using space of optical module can be left for, and motor carrier needs magnetite driving coil to generate certain thrust Camera lens can be driven to realize longitudinal movement, wherein magnetite occupies biggish volume inside motor, and in order to which thrust can Reach certain value, the volume of magnetite is difficult to reduce again, and therefore, it is necessary to improve motor knot under the premise of not reducing magnetite volume Structure reduces the volume of motor, and then reduces the volume of mobile phone optical module.

Marmem, Shape Memory Alloys, abbreviation SMA.SMA wire can be eliminated after capable of heating up compared with The deformation occurred under low temperature, the original-shape before restoring its deformation, thus can replace motor that camera lens is driven to carry out by SMA wire Movement.SMA wire has smaller volume for traditional motor, can be effectively reduced the overall dimensions of mould group, is conducive to The miniaturization of mould group.

Summary of the invention

The application is directed to a kind of method that SMA wire is wound on optical module, it is expected that the optical module being consequently formed With with the optical module camera module and smart machine there is lesser volume and can realize oneself under the driving of SMA wire Dynamic focusing and optical anti-vibration.

According to the application, a kind of method that SMA wire is wound on optical module is provided, wherein optical module includes tool There is the lens module of outer framework and the fixation device of one group of diagonal zones of lens module is set, which comprises surrounds Outer framework installs SMA wire to form four sides facing each other, wherein on each side, SMA wire includes the first SMA Line and the second SMA wire, the first SMA wire and the second SMA wire are arranged to intersected with each other but do not contact, wherein SMA wire was being installed Tensioned state is in journey.

In one embodiment, four sides are formed rectangle.

In one embodiment, outer framework includes the first bearing corresponding to another group of diagonal zones of each side Portion and the second supporting part；Fixed device all has and the first supporting part and second on stationary plane corresponding with each side respectively Corresponding first fixed part of supporting part and the second fixed part include: when lens module is close around outer framework installation SMA wire It is every in two adjacent sides in an angular zone of outer framework when an angular zone in another group of diagonal zones It is a, the movable end of the first SMA wire is supported on the first supporting part, it is fixed that two fixing ends of the first SMA wire are fixed on first Portion, and the movable end of the second SMA wire is supported on the second supporting part, two fixing ends of the second SMA wire are fixed on second and are consolidated Determine portion；And when another angular zone in another group of diagonal zones of lens module, another is in outer framework The movable end of first SMA wire is supported on the first supporting part by each of two adjacent sides of angular zone, by the first SMA wire Two fixing ends be fixed on the first fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by the 2nd SMA Two fixing ends of line are fixed on the second fixed part.

In one embodiment, the first fixed part includes the first power supply fixed part and the first ground wire fixed part, and second is solid Determining portion includes second source fixed part and the second ground wire fixed part, wherein installing SMA wire around outer framework includes: when camera lens mould When an angular zone of the block in another group of diagonal zones, in two adjacent sides in an angular zone of outer framework Each of, the movable end of the first SMA wire is supported on the first supporting part, two fixing ends of the first SMA wire are separately fixed at First power supply fixed part and the first ground wire fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by second Two fixing ends of SMA wire are separately fixed at second source fixed part and the second ground wire fixed part；And when lens module is close When another angular zone in another group of diagonal zones, in two in another angular zone adjacent side of outer framework Each, the movable end of the first SMA wire is supported on the first supporting part, two fixing ends of the first SMA wire is separately fixed at One power supply fixed part and the first ground wire fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by the 2nd SMA Two fixing ends of line are separately fixed at second source fixed part and the second ground wire fixed part.

In one embodiment, first between the first supporting part and the first power supply fixed part of the first SMA wire Line segment and the second line segment between the first supporting part and the first ground wire fixed part are arranged to parallel to each other, the second SMA wire Third line segment between the second supporting part and second source fixed part and fixed positioned at the second supporting part and the second ground wire The 4th line segment between portion is arranged to parallel to each other.

In one embodiment, in the adjacent side of outer framework, set symmetrical for SMA wire.

In one embodiment, on each side of outer framework, that are set by the first SMA wire and the second SMA wire This length symmetrical and having the same.

In one embodiment, on each side of outer framework, by the movable end of the first SMA wire and the second SMA wire It is set as with each side at a distance from different.

In one embodiment, on each side of outer framework, by the fixing end of the first SMA wire and the second SMA wire It is set as with each side at a distance from different.

In one embodiment, the movable end of the first SMA wire and the second SMA wire wind or be fixed on the first supporting part and On second supporting part.

In one embodiment, at least the first SMA wire in the first SMA wire and the second SMA wire includes two SMA sub-lines Section, installing the first SMA wire around outer framework includes: to fix at the both ends of every SMA sub-line section in two SMA sub-line sections respectively In the first supporting part and the first fixed part, wherein the interconnecting piece of the first supporting part and every root line segment is conductive structure, to make Two SMA sub-line sections are electrically connected at the first supporting part.

In one embodiment, the first fixed part includes the first power supply fixed part and the first ground wire fixed part, wherein is enclosed Installing the first SMA wire around outer framework includes: that the both ends of the first SMA sub-line section in two SMA sub-line sections are individually fixed in the The both ends of the 2nd SMA sub-line section in two SMA sub-line sections are individually fixed in first by one supporting part and the first power supply fixed part Supporting part and the first ground wire fixed part.

In one embodiment, this method further comprises: the SMA wire for being fixed on the first fixed part is fixed from first Portion is led to outward to be connected with circuit board, wherein the SMA wire drawn outward from the first fixed part is relaxed state.

According to method provided by the present application, auto-focusing and optical anti-vibration can be conveniently realized.

Detailed description of the invention

Exemplary embodiment is shown in reference attached drawing.Embodiment and attached drawing disclosed herein should be considered illustrative , and not restrictive.

Figure 1A shows the solid according to the optical module of one illustrative embodiments of the application when providing SMA wire Figure；

Figure 1B shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；

Fig. 2 is the partial enlarged view of the fixation device in embodiment shown in figure 1A；

Fig. 3 A shows the schematic diagram of the winding section in embodiment shown in figure 1A；

Fig. 3 B shows the schematic diagram of the winding section in embodiment shown in Figure 1B；

Fig. 4 A shows the schematic diagram of the coiling shape according to one illustrative embodiments of the application；

Fig. 4 B shows the schematic diagram of the coiling shape according to the application another illustrative embodiments；

Fig. 5 shows the vertical view according to the optical module of one illustrative embodiments of the application when providing SMA wire Figure；

Fig. 6 A shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；

Fig. 6 B shows the partial enlarged view of the movable end fixing piece in embodiment shown in Fig. 6 A；

Fig. 6 C shows the schematic diagram of internal structure of the movable end fixing piece in embodiment shown in Fig. 6 A；

Fig. 7 shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；

Fig. 8 shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；

Fig. 9 A shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；

Fig. 9 B shows the embodiment according to shown in 9A in the side view of a side；

Figure 10 schematically shows the perspective according to the optical module of the application embodiment when being wound with SMA wire Figure.

Specific embodiment

Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute Any and all combinations of one or more of list of items.

It should be noted that in the present specification, the first, second equal statement is only used for a feature and another feature differentiation It comes, without indicating any restrictions to feature.Therefore, discussed below without departing substantially from teachings of the present application First main body is also known as the second main body.

In the accompanying drawings, for ease of description, thickness, the size and shape of object are slightly exaggerated.Attached drawing is merely illustrative And it is and non-critical drawn to scale.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory In bright book use when indicate exist stated feature, entirety, step, operations, elements, and/or components, but do not exclude the presence of or It is attached with one or more of the other feature, entirety, step, operation, component, assembly unit and/or their combination.In addition, ought be such as When the statement of at least one of " ... " appears in after the list of listed feature, entire listed feature is modified, rather than is modified Individual component in list.In addition, when describing presently filed embodiment, use " can with " indicate " one of the application or Multiple embodiments ".Also, term " illustrative " is intended to refer to example or illustration.

As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and Be not used as the term of table degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or calculated value In inherent variability.

Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and It will not be explained with idealization or excessively formal sense, unless clear herein so limit.

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Figure 1A shows the solid according to the optical module of one illustrative embodiments of the application when providing SMA wire Figure.

It as shown in Figure 1A, include lens module 10, pedestal according to the optical module of one illustrative embodiments of the application 20 and fixed device 30.Before optical module is mounted to smart machine, also SMA wire 40 is installed on optical module.

Lens module 10 includes the outer framework 12 of the rectangle of camera lens 11 and encirclement camera lens 11.The outer framework 12 of rectangle has four A side.In perspective view shown in figure 1A, it can be seen that the structure setting of two sides of outer framework 12.It should be appreciated that In Figure 1A on other two side of unshowned outer framework 12, it may have similar structure setting.

It include two winding sections on each side of outer framework 12, that is, the first winding section 13 and the second winding section 14, often The first winding section 13 and the second winding section 14 of a side are respectively positioned on one group of diagonal zones 12A of outer framework 12.First winding section 13 and second winding section 14 may be integrally formed on the outer framework 12 of lens module 10.

The lower section of lens module 10 is arranged in pedestal 20, is used to support lens module 10.Lens module 10 is on pedestal 20 Substantially centrally it is arranged.When being driven, lens module 10 can the optical axis under the support of pedestal 20 along camera lens 11 move, with And it is moved in the plane perpendicular to optical axis.Hereinafter, by combine the application optical module structure it is driven and Movement under driving is described in detail.

Another group of diagonal zones 12B of the outer framework 12 of lens module 10 is arranged in fixed device 30.Fixed device 30 is solid It is scheduled on pedestal 20.As shown, fixed device 30 has stationary plane corresponding with each side of outer framework 12 respectively, also It is that fixed device 30 has four stationary planes corresponding with four sides of outer framework 12.At each diagonal zones 12B There are two stationary planes for tool.Although showing two stationary planes at each diagonal zones 12B in figure is integrally formed into L shape, But optionally, two stationary planes at each diagonal zones 12B are also possible to completely separated or partially separated.

On stationary plane corresponding with each side of outer framework 12 respectively, fixed device 30 includes the first power supply fixing end 31, ground wire fixing end 32 and second source fixing end 33.The setting of first power supply fixed part 311 corresponding with the first winding section 13 exists In first power supply fixing end 31, second source fixed part 331 corresponding with the second winding section 14 is arranged in second source fixing end On 33.And the corresponding first ground wire fixed part 321 in the first winding section 13 and second ground wire corresponding with the second winding section 14 are fixed Portion 322 is arranged in ground wire fixing end 32.Including the first power supply fixing end 31, ground wire fixing end 22, second source fixing end 33 fixation device 30 is fixed on pedestal 20, and the first power supply fixing end 31, ground wire fixing end 22 and second source fixing end Each of 33 with pedestal 20 have be electrically connected.First power supply fixing end 31, ground wire fixing end 32 and second source fixing end 33 It separates, is electrically isolated to be formed each other, and 33 quilt of the first power supply fixing end 31 and second source fixing end each other It powers respectively.Above-mentioned power supply fixed part and ground wire fixed part can be power supply fixing end and fixed point in ground wire fixing end or Person is the fixing element in fixed point.

It will be appreciated that though showing first ground wire fixed part 321 corresponding with the first winding section 13 in Figure 1A and with The corresponding second ground wire fixed part 322 in two winding section 14 is all disposed in identical ground wire fixing end 32, but the two can also divide It is not arranged in different ground wire fixing ends.

Fig. 2 is the partial enlarged view of the fixation device 30 in embodiment shown in figure 1A, which corresponds to One stationary plane of fixed device 30.From fig. 2 it can be seen that ground wire fixing end 32 is located at the first power supply fixing end 31 and second Between power supply fixing end 33, thus first ground wire fixed part 321 corresponding with the first winding section 13 and right with the second winding section 14 The the second ground wire fixed part 322 answered can be arranged in sharedly in same ground wire fixing end 32.First power supply fixing end 31, ground wire are solid Fixed end 32 and second source fixing end 33 are separated by a certain distance, to ensure mutual electric isolution.As described above, solid Determining device 30 may also comprise two ground wire fixing ends, and first ground wire corresponding with the first winding section 13 is respectively set on it and fixes Portion 321 and second ground wire fixed part 322 corresponding with the second winding section 14.It should be appreciated that power supply fixing end and ground wire fixing end It may also be distinct from that the other modes setting of diagram and provide.

Figure 1A and Fig. 2 also shows the SMA wire 40 that the outside of lens module 10 and fixed device 30 is arranged in.What is shown In embodiment, there are two fixing end and a movable ends for the every tool of SMA wire 40.Two fixing ends of every SMA wire 40 (are located at Two ends) it is individually fixed in one group of power supply fixed part and ground wire fixed part, a movable end (being located at middle part) is wound around pair It should be on the winding section of this group of power supply fixed part and ground wire fixed part.

First winding section 13, the first power supply fixed part 311 and the first ground wire fixed part 321 are provided so that: both ends point It is not fixed on the first power supply fixed part 311 and the first ground wire fixed part 321, movable end is wound around SMA on the first winding section 13 Two line segments that line 40 is formed after coiling are substantially parallel.Having on first winding section 13 will be substantially parallel with two respectively The position of SMA wire section contact, is referred to as the first winding position and the second winding position.It is, on the first winding section 13 On the first line and the first winding section 13 between fixation position on first winding position and the first power supply fixed part 311 The second line between fixation position on two winding positions and the first ground wire fixed part 321 is parallel to each other.Second winding section 14, Second source fixed part 331 and the second ground wire fixed part 322 are provided so that: both ends are individually fixed in second source fixed part 331 and formed after coiling two of the SMA wire 40 that is wound around on the second winding section 14 of the second ground wire fixed part 322, movable end Line segment is substantially parallel；It is, the third winding position on the second winding section 14 and the fixed bit on second source fixed part 331 The fixation position on the 4th winding position and the second ground wire fixed part 322 on third line and the second winding section 14 between setting Between the second line be parallel to each other.Above-mentioned winding section and fixed part are also configured to so that the first line being parallel to each other and Two lines intersect but do not contact each other with the third line and the 4th line being parallel to each other, to fix and be wound around above-mentioned two groups Two SMA wires of winding section and fixed part are formed as intersecting but not contact each other.

For example, on each side of outer framework 12, the first winding position and the second winding position of the first winding section 13 With it is identical or approximately uniform at a distance from the corresponding side surface of outer framework 12.The third winding position of second winding section 14 and the 4th around Line position is also identical or approximately uniform at a distance from the corresponding side surface of outer framework 12.First winding position of the first winding section 13 With the second winding position at a distance from the corresponding side surface of outer framework 12 with the third winding position and the 4th of the second winding section 14 Winding position is different at a distance from the corresponding side surface of outer framework 12.

In another example on each stationary plane of fixed device 30, fixation position on the first power supply fixed part 311 and described Fixation position on first ground wire fixed part 321 is separated by a distance identical or approximately uniform as the stationary plane.Second source is fixed The fixation position on fixation position and the second ground wire fixed part 322 in portion 331 is separated by a distance identical or close as the stationary plane Patibhaga-nimitta is same.The fixation position on fixation position and the first ground wire fixed part 321 on first power supply fixed part 311 is solid with this Determine the fixation position on the fixation position and the second ground wire fixed part 322 separated by a distance on second source fixed part 331 of face With stationary plane difference separated by a distance.

It installs to be set to by above-mentioned winding position and/or fixed bit and be separated by a distance from different with side or stationary plane, so that It is fixed and be wound around two groups of winding sections and two SMA wires of fixed part are formed as intersecting but not contact each other.In fixed and winding In the case where two SMA wires of two groups of winding sections and fixed part are formed as intersecting but not contacting each other, in different SMA wire quilts In the case where electric drive, camera lens 11 can be realized and be moved along optical axis, and be moved in the plane perpendicular to optical axis.

In the embodiment shown in Figure 1A, the first winding section 13 and the second winding section 14 are set perpendicular to the optical axis of lens 11 It sets, and there is the winding structure for being parallel to optical axis.Optionally, winding section itself can also be not orthogonal to optical axis, but after coiling First line and the second line, which are formed by plane, will be parallel to optical axis, i.e., the first winding structure 131 and second described hereinafter 141 center of winding structure is perpendicular to optical axis.

It will be appreciated that though the outer framework 12 being shown in the accompanying drawings is rectangle, but outer framework be also possible to rectangle with Outer any other suitable shape, as long as the position and structure of winding section and fixed part are provided so that SMA wire can be formed For in quadrangle (preferably, being in rectangle) winding, the four edges of quadrangle correspond respectively to side of the outer framework on four direction Face, and thus, it is possible to drive lens module to move according to mode described below.For example, outer framework is also possible to arc Shape, winder is arranged in arc-shaped outer surface, and winder can be fixed with the power supply fixing end and ground wire for being set to fixed device End forms quadrangle, preferably rectangle；For another example fixed device can be circular arc type, in the outer surface of circular arc, setting power supply is fixed End and ground wire fixing end, the shape and size corresponding change of power supply fixing end and ground wire fixing end, so as to total with winder With the quadrangle form for forming similar rectangle.

In fact, the outer framework of lens module can have four sides divided according to angular range, on each side Winding section and corresponding fixed part are configured to form above-mentioned quadrangle.It answers four sides that angularly range divides When being interpreted as, point (center of circle) divides four quadrants centered on the center of outer framework, and the angular range of each quadrant is corresponding In a side.For example, four sides thus divided correspond to the four edges of rectangle for the outer framework of rectangle；For circle The outer framework of shape, four sides thus divided correspond to four sections of quarter circular arcs.That is, the outer framework of lens module It can be arbitrary shape, as long as according to corresponding solid on the winding section being arranged on each side of angular divisions and fixed device Determine portion and cooperatively forms required quadrilateral structure.

It will also be understood that the pedestal in above embodiment nor is it necessary that for the optical module of the application. For example, the bottom of fixed device can laterally extend a support portion to replace pedestal.

Fig. 3 A shows the schematic diagram of the winding section in embodiment shown in figure 1A.As shown in Figure 3A, the first winding section 13 and second winding section 14 extended vertically from the side of outer framework 12, therefore perpendicular to the optical axis of lens 11.In the first winding section 13 and second on winding section 14, are respectively set the first winding structure 131 and the second winding structure 141 for being parallel to optical axis.Example Such as, the first winding structure 131 and the second winding structure 141 are separately positioned on the first winding section 13 and the second winding section 14 Groove structure is wound with for SMA wire.As shown, the first winding structure 131 and the second winding structure 141 are separately positioned on With the side place separated by different distances of outer framework 12, the fixed part on fixed device 30 is arranged identical away from stationary plane as a result, Apart from when, fixed as described above and winding two SMA wires 40 intersect without contacting.First winding section 13 shown in Fig. 3 A There is roughly the same length with the second winding section 14, and the first winding structure 131 and the second winding structure 141 are respectively formed at Head away from the first winding section 13 and the second winding section 14 or at the different location of distal portion.It should be appreciated that the structure of winding section It is without being limited thereto, for example, the first winding section 13 and the second winding section 14 with different length, the first winding structure 131 can be used The head away from the first winding section and the second winding section or the same position of distal portion are respectively formed at the second winding structure 141 Place, as long as the first winding structure and the second winding structure are respectively formed at the side of outer framework 12 place separated by different distances i.e. It can.In various embodiments, the first winding structure 131 and the second winding structure 141 also may be formed at and outer framework 12 Side is separated by same distance, and the correspondence fixed part fixed on device be formed in it is separated by different distances with corresponding stationary plane.

Figure 1B shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure.Compared with embodiment shown in figure 1A, the main distinction of embodiment shown in Figure 1B is the structure of winding section.Figure The first winding section 15 and the second winding section 16 in 1B, which have, is similar to L-shaped structure, the body parallel with winding structure in The optical axis of lens 11 is arranged, and has the winding structure 151 and 161 perpendicular to the optical axis.

In the above-described embodiment, for the ease of installation SMA wire, the height of power supply fixing end and corresponding ground wire fixing end May be configured as it is different from each other, that is, the fixation position on fixation position and the first ground wire fixed part on the first power supply fixed part The distance of corresponding side surface apart from outer framework is different, on the fixation position and the second ground wire fixed part on second source fixed part The distance of the corresponding side surface of fixed positional distance outer framework is different.At this point it is possible to be the whole of power supply fixing end and ground wire fixing end Body height is different, and the fixed bit being also possible in power supply fixing end and ground wire fixing end installs at different height.

It should be appreciated that winding section itself shape and structure can also not perpendicular or parallel to optical axis, as long as thereon around Cable architecture is as described in the embodiments above parallel or perpendicular to optical axis.It further, can also be according to actual needs by coiling Structure setting is to have angle between optical axis, by the presence of angle, so that SMA has higher consistency when shrinking.

Fig. 3 B shows the schematic diagram of the winding section in embodiment shown in Figure 1B.As shown in Figure 3B, the first winding section 15 and second winding section 16 body parallel in the optical axis of lens 11, and the first winding section 15 and the second winding section 16 have from Its main body extends to the connection structure of the side of outer framework 12.Optionally, be parallel to optical axis the first winding section 15 and second around Line portion 16 can be connected to the side of outer framework 12 by additional connector.On the side of outer framework 12, it is respectively arranged with vertical Directly in the first winding structure 151 of optical axis and the second winding structure 161.As shown, the first winding structure 151 and the second coiling Structure 161 be separately positioned on the side of outer framework 12 place separated by different distances, the fixed part on fixed device 30 is set as a result, It sets when away from stationary plane same distance, fixed and winding two SMA wires 40 intersect without contacting as described above.Different In embodiment, the first winding structure and the second winding structure also may be formed at and be separated by same distance with the side of outer framework 12 Place, and the correspondence fixed part fixed on device be formed in it is separated by different distances with corresponding stationary plane.

Winding structure shown in Fig. 3 A and 3B is I-shaped, that is, both ends are wider, interphase has centainly both ends The structure for the distance that is recessed.The recess portion that recess distance is constituted limits SMA wire and generates the not phase in driving period for accommodating SMA wire The movement of prestige.Optionally, the winding structure that T-type can also be used, prevents SMA wire from falling off in driving period.Further, also One can be increased on winding structure prevents SMA wire de- from winder for limiting the position of SMA wire similar to the structure of mushroom head It falls, such structure, which is also possible to be similar into screw hole, twists screw, or positioning pin is inserted into location hole.It is screwed to last spiral shell There can be an annular gap between hole and screw, annular gap is for installing SMA wire.Since the head of screw is bigger, thus Enhance the limit effect to SMA wire.

Fig. 4 A and 4B show two kinds of coiling shapes according to the application illustrative embodiments.Specifically, Fig. 4 A is shown Schematic diagram of the SMA wire 40 with U-shaped structure winding, Fig. 4 B show SMA wire with the schematic diagram of O/ α shape structure winding.

In the embodiment as shown, every SMA wire is formed as the double-deck cable architecture of U-shaped or O/ α shape after coiling, relatively For existing single line structure, the double-deck cable architecture have better structural strength, higher stability, smaller posture difference with And higher focusing precision etc..The structural strength of SMA wire is enhanced by the double-deck cable architecture, additionally it is possible to keep SMA wire carrying heavier Camera lens, such as glass lens, or compared to present camera lens, the camera lens with more eyeglasses further increases entire mould group Quality.

Fig. 5 shows the vertical view according to the optical module of one illustrative embodiments of the application when providing SMA wire Figure.Next, the mobile progress in conjunction with Fig. 5 to the optical module according to the application under the drive of SMA wire in all directions Description.

As shown in figure 5, being each provided with SMA wire in each side according to the optical module of the application.Although not showing in Fig. 5 Out, but it should be appreciated that according to description above and all have two SMA for intersecting but not contacting each other in each side Line, rather than an only SMA wire.The winding section 13,14 for being set to the diagonal zones 12A of outer framework 12 is shown in Fig. 5, and It is set to the fixation device 30 of diagonal zones 12B.Although the winding section shown in Fig. 5 is parallel to optical axis, it should be understood that winding section It can be perpendicular to optical axis.For ease of description, four sides of the outer framework of optical module are widdershins compiled respectively as shown in Figure 5 Number be first side 1, second side 2, third side 3 and the 4th side 4.Meanwhile as shown in figure 5, it will be perpendicular to the flat of optical axis Face right-angle coordinate representation shows x and y-axis in Fig. 5.Based on coordinate system shown in fig. 5, the side of x/y plane can be will be perpendicular to It is the direction z+ perpendicular to the plane upwardly direction to z-axis is considered as, is the direction z- perpendicular to the plane downwardly direction.

As shown in figure 5, four sides are divided into two groups, two opposite sides are one group.Specifically, 1 He of first side Third side 3 is one group, for controlling camera lens 11 in the movement in the direction x.Second side 2 and the 4th side 4 are one group, for controlling Movement of the camera lens 11 processed in the direction y.

As described above, fixed device 30 is fixed on pedestal 20 in the camera module of the application, and therefore, fixed device 30 And the holding position in the motion process of camera lens 11 of fixed part thereon is constant.When needing to drive camera lens mobile to the direction x+, Electric current is applied to two SMA wires of third side, the SMA wire of third side increases the temperature of predetermined amount after powered up, thus receives The length of contracting predetermined amount.Because fixed device 30 is fixed at the both ends of SMA wire, the position at the both ends of SMA wire is to maintain not Become.In two SMA wire Length Contractions, it is wound around the movable end of winding section and power to the direction x+ is applied to winding section jointly, Make camera lens 11 to the mobile scheduled distance in the direction x+.SMA wire in third side applies the power to the direction x+ and drives camera lens to x In the case that+direction is mobile, the SMA wire of first side is with lens module moving and be stretched to the direction x+.When camera lens mould After block reaches desired location and keeps stable state, cool down to the SMA wire of third side, to make lens module steadily It is maintained at desired location and realizes corresponding focusing or zoom function.

Similarly, when needing to drive lens module mobile to the direction x-, electric current is applied to the SMA wire of first side, is made The SMA wire of first side shrinks and drives camera lens mobile to the direction x-.At this point, the SMA wire of third side with lens module to It moves and is stretched in the direction x-.

When needing to drive camera lens mobile to the direction y+, electric current is applied to two SMA wires of the 4th side, the 4th side SMA wire increases the temperature of predetermined amount after powered up, thus shrinks the length of predetermined amount.Because fixation is fixed at the both ends of SMA wire Device 30, thus the position at the both ends of SMA wire be to maintain it is constant.In two SMA wire Length Contractions, it is wound around winding section Movable end applies the power to the direction y+ to winding section jointly, makes camera lens 11 to the mobile scheduled distance in the direction y+.In the 4th side SMA wire apply the power to the direction y+ and drive camera lens to the direction y+ it is mobile in the case where, the SMA wire of second side is with camera lens Module is moved and is stretched to the direction y+.After lens module reaches desired location and keeps stable state, to the 4th side SMA wire cool down, to make lens module be stably maintained at desired location and realize corresponding focusing or zoom function.

Similarly, when needing to drive lens module mobile to the direction y-, electric current is applied to the SMA wire of second side, is made The SMA wire of second side shrinks and drives camera lens mobile to the direction y-.At this point, the SMA wire of the 4th side with lens module to It moves and is stretched in the direction y-.

It will be appreciated that though be not shown in Fig. 5, the edge of lens module is supported on pedestal with fixed device at a distance of appropriate Distance so that lens module can be in the mobile appropriately distance in the direction x and y, to realize that optics is anti-under the driving of SMA wire The function of trembling.

In order to remain unchanged lens module when to the direction x and the mobile direction y in the axial position of optical axis, each side Two SMA wires may be configured as it is substantially symmetric relative to the crossover location of the two, thus being applied roughly the same electric current In the case of, the power applied to winding section is also roughly the same, and the axial component for the power that thus the two applies is substantially balanced out.

It is arranged to intersect two SMA wires of each side the foregoing describe winding section and fixed part but does not contact.? That is a winding section setting corresponding to top fixed part and on the lower in two SMA wires of each side, Ling Yigen Corresponding on the lower fixed part and the setting of top winding section, the cross reference of two SMA wires is consequently formed.

When needing that camera lens is driven to move on the direction z+, fixed part is top in two SMA wires of each side one SMA wire is applied electric current.It is, four top SMA wires of fixed part are applied electric current altogether, the SMA wire heating of energization is simultaneously Thus the length of predetermined amount is shunk.In four SMA wire Length Contractions, the movable end for being wound around winding section jointly applies winding section Add the power to the direction z+, makes camera lens 11 to the mobile scheduled distance in the direction z+.When lens module reaches desired location and keeps steady After determining state, cool down to the SMA wire of the 4th side, to make lens module be stably maintained at desired location and realize phase The focusing answered or zoom function.

Similarly, when needing to drive lens module mobile to the direction z-, to fixed part in two SMA wires of each side A SMA wire on the lower applies electric current, shrinks the SMA wire being powered and drives camera lens mobile to the direction z- jointly.It as a result, can be real The automatic focusing function of existing camera lens.

In order to remain unchanged lens module when mobile to the direction z in the position in the direction x and the direction y, adjacent side SMA wire may be configured as it is substantially symmetric relative to the boundary line of adjacent side, thus the case where being applied roughly the same electric current Under, component of the power in the direction x and the direction y that winding section applies is substantially balanced out.

Fig. 6 A shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure.Difference with embodiment shown in figure 1A is, fixes on the outer framework 12 of lens module 10 provided with movable end Portion replaces winding section.As shown in Figure 6A, on the outer framework of lens module 10, the first movable end fixed part 17 and are provided The U-shaped structure of SMA wire is clamped and is fixed by two movable end fixed parts 18, thus can avoid SMA wire when camera lens is mobile with around Line device generates friction.

Fig. 6 B shows the partial enlarged view of the movable end fixing piece in embodiment shown in Fig. 6 A；Fig. 6 C is shown The schematic diagram of internal structure of movable end fixing piece in embodiment shown in Fig. 6 A.

Using movable end fixed part substitution winding section, two sections for being equivalent to the formation of U-shaped winding structure are parallel Each of SMA wire section at least one point of SMA wire section near winding structure be fixed on movable end fixed part.This In the case of, it is first solid to can be movable end fixed part for the first winding position and the second winding position of winding section described above Positioning is set and the second fixed position.

At this point, being powered movement of the deformation occurred for camera lens due to being fixed on internal SMA wire by movable end fixed part There is no direct or positive effect, therefore, optionally, SMA wire can be separate structure at U-shaped structure, that is, can remove SMA Line is fixed on interior part by movable end fixed part.In fact, be equivalent to will be in the embodiment of Figure 1A to Fig. 4 for such structure A SMA wire be divided into two SMA wires and provide, two SMA wires have one end to be connected to movable end fixed part, two SMA wires The other end is connected to power supply fixed part corresponding with the movable end fixed part and ground wire fixed part.

In this case, be connected between two ends of movable end fixed part can be by common conduction for two SMA wires Element realizes electrical connection, since the resistance of common conductive element is less than the resistance of SMA wire, thus, it is real by common conductive element Now electrical connection can reduce the voltage that the SMA wire being fixed at the fixed original part of movable end is assigned to, and reduce electric energy loss, improve Utilization rate of electrical.

It is the equal of the first SMA wire and the second SMA wire is both threads in the present embodiment, and the both ends of the first SMA wire point It is not fixed in movable end and fixing end, the second SMA wire is also such.

In one embodiment, two SMA wires can be installed simultaneously, and reserve slightly larger length.It, can in movable end fixed part The wire length of needs is intercepted according to actual needs.The position contacted inside movable end fixed part with SMA wire, which can be, is capable of conduction Metal structure, to make the line being clipped in inside movable end fixed part that can directly be short-circuited, electric current is directly from movable end fixed part stream Dynamic, to realize the electrical connection between two SMA wires, forming circuit enables SMA wire to work normally.

By U-shaped structure by the way that it is solid to be fixed on same movable end in the fixed scheme of movable end fixed part shown in Fig. 6 A Determine two SMA wires can be enabled more preferable each other only at a distance of the distance of about line footpath between two SMA wires in portion Ground moves synchronously.Optionally, be fixed between two SMA wires of same movable end fixed part can also it is apart it is bigger away from From avoiding mutual friction so that being not in contact with each other each other.

As shown in Figure 6A, two movable end fixed parts of same side have different sizes, so that an activity Hold the fixed position of movable end and the side on fixed part separated by a distance and another movable end fixed part on movable end consolidate Positioning is set and side difference separated by a distance.

Fig. 7 shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure.It is similar with embodiment shown in Fig. 6 A, in the embodiment of Fig. 7, movable end fixed part is also used to replace coiling Portion.Unlike the embodiment of Fig. 6 A, in the embodiment of Fig. 7, similar fixation is also used on fixed device 30 Component.As shown in fig. 7, fixed device 30 no longer includes power supply fixing end and ground wire fixing end electrically isolated from one, but solid Determine that the first fixing piece 34 and the second fixing piece 35 are arranged on device.First power supply fixed part 311 and the first ground wire fixed part 312 that It is fixed in the first fixing piece 34 to this electrical isolation.Second source fixed part 331 and the second ground wire fixed part 322 are electrically insulated from each other Ground is fixed in the second fixing piece 35.It is, the both ends that movable end is fixed on every SMA wire of movable end fixed part pass through together One insulation fixing piece be fixed, the spacing at the line both ends fixed by the fixing piece can be equal to or greater than line diameter, and will The both ends of SMA wire are drawn outward respectively, and are electrically connected with wiring board realization, to replace directly being electrically connected with wiring board by fixing end The mode connect.SMA wire can be made to be fixed in fixed device by the way that glue is Nian Jie between SMA wire and fixed device, it can also be by solid Determine conducting element built in inside device, being electrically connected between SMA wire and wiring board is realized by conducting element, other can also be passed through Mode realizes being electrically connected between SMA wire and wiring board.

In the embodiment shown in figure, two SMA wires of intersection have the length being equal or approximately equal, to avoid The phase mutual friction of SMA wire when camera motion.When fixing end is directly electrically connected with wiring board realization by SMA wire, it is located at and fixes The route that the SMA wire of end top extends downwardly is not limited to show situation in figure.

As a kind of selection, two SMA wires of intersection also can have different length.As shown in figure 8, two intersected SMA wire also can have different length.In this case, the SMA wire drawn by the fixing piece on fixed device can be with Extend directly down, and is electrically connected with wiring board realization.

In Fig. 7 and embodiment shown in Fig. 8, the SMA wire and line drawn outward by the fixing piece on fixed device Road plate is connected, and since SMA wire has the characteristic of heat shrinkable, SMA wire needs to reserve certain length during installation, to prevent Only line can be broken.As a kind of selection, SMA wire can also terminate in fixing piece, and pass through conventional conducting wire or insert Molding realizes electrical connection.

Fig. 9 A shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application Body figure；And Fig. 9 B shows the embodiment according to shown in 9A in the side view of a side.

The difference of embodiment and embodiment shown in figure 1A shown in Fig. 9 A and Fig. 9 B is, the first winding section and Two winding sections are formed by being parallel in the same shaft member 19 of optical axis two parts, the first winding section of formation and the second winding section Shaft member is arranged in from the outwardly extending supporting element 191 of corresponding side surface of outer framework.When the first winding section and the second winding section When being formed in this way, shaft member 19 and supporting element 191 can pass through the camera lens and outer framework 12 of Shooting Technique and camera module It is integrally formed, to simplify manufacturing process.

It should be appreciated that the winding section and movable end fixed part in above embodiment also are embodied as other bearing parts, As long as supporting role can be provided the movable end of SMA wire and drive camera lens in the case where SMA wire applied force due to contraction Module is moved with the contraction of SMA wire.

There is supporting role using the movable end to SMA and can driven and mobile branch when SMA wire is shunk by SMA In the case where bearing portion, bearing position corresponds to the winding position in embodiments described above.Therefore, in some embodiments In, the first line and first between the fixation position on the first bearing position and the first power supply fixed part on the first supporting part The second line between the fixation position on the second bearing position and the first ground wire fixed part on supporting part is parallel to each other, and second The third line and the second supporting part between fixation position on third bearing position on supporting part and second source fixed part On the 4th bearing position and the second ground wire fixed part on fixation position between the 4th line be parallel to each other, be parallel to each other First line and the second line intersect but do not contact each other with the third line and the 4th line being parallel to each other.In some embodiment party In formula, on each side of outer framework, what the corresponding side surface of the first bearing position and the second bearing position and outer framework was separated by Distance is different from third bearing position and the 4th bearing position and the corresponding side surface of outer framework is separated by a distance.

Figure 10 schematically shows the perspective according to the optical module of the application embodiment when being wound with SMA wire Figure.Specifically, Figure 10 shows and is respectively provided with two SMA wires 40 on four sides of outer framework 12, and every SMA wire is consolidated Fixed end is fixed on fixed device 30, and movable end is supported on supporting part 13,14.

As described above and the structure that is shown in the accompanying drawings, present invention also provides the camera modules with SMA wire Embodiment.

According to one embodiment, camera module can include: there is the lens module of outer framework, lens module is set Lower section and the SMA wire for being used to support the pedestal of lens module and being arranged in quadrangle around the outer framework of lens module, In, the four edges of quadrangle correspond respectively to side of the outer framework on four direction, on each side of outer framework, SMA Line includes the first SMA wire and the second SMA wire, wherein the first SMA wire and the second SMA wire are arranged to intersected with each other but do not connect Touching.In this embodiment, for the above embodiment in fixation device and supporting part (including winding section and movable end are fixed Portion) structure and position can be not particularly limited, as long as the SMA that the outer framework side of lens module is arranged in is enclosed in quadrangle Around lens module outer framework setting and two SMA wires of each edge of quadrangle can not contact intersected with each other but from And camera lens can be driven mobile to the direction of needs under different drivings, the purpose of the application can be realized.

In one embodiment, above-mentioned quadrangle is rectangle.

In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire all have fixation End and movable end, fixing end are arranged at position corresponding with one end of each side of outer framework, and movable end is supported on outline border The other end of each side of frame, fixing end relative to pedestal be it is fixed, movable end relative to outer framework be it is fixed, For SMA wire when deformation occurs, movable end drives lens module to be moved relative to pedestal.It has described in detail above in camera lens The SMA wire of the outer framework side of module carries out which kind of contraction and movement respectively under different drive modes to realize optical anti-vibration With the specific situation of auto-focusing, therefore it is not repeated to describe herein.Above in association in each embodiment of attached drawing description All technical features are suitable for the camera module embodiment with SMA wire in the case where not having conflict.

For example, in one embodiment, at least one of the first SMA wire and the second SMA wire are to fold, to have There are two fixing end and a movable end, two fixing ends of at least one of the first SMA wire and second SMA wire are the bottom of relative to Fixed and adjacent position is arranged in seat.The both ends SMA wire folded as a result, is formed as generally parallel to each other.

In one embodiment, the movable end of at least one of the first SMA wire and second SMA wire is supported in camera lens On the outer framework of module.As described above, movable end can be is supported on the outer of lens module by way of winding or fixing On frame, and support pattern of the movable end on outer framework is not limited to wind and fix.

In one embodiment, at least one of the first SMA wire and the second SMA wire are folded into two SMA wire sections, Two SMA wire sections are parallel to each other and length having the same.In various embodiments, two SMA wire sections also can have Different length.

In one embodiment, the SMA wire in the adjacent side of outer framework is symmetrically arranged, thus in order to realize Optical anti-vibration and in the case where being applied roughly the same electric current, the two is at the bearing on outer framework or power that supporting part applies Component in the direction x and the direction y is substantially balanced out.In one embodiment, on each side of outer framework, the first SMA wire It is arranged to be mutually symmetrical with the second SMA wire and length having the same, to be applied during the focusing process roughly the same In the case where electric current, at the bearing on outer framework or power that supporting part applies is also roughly the same, the power both thus applied Axial component is substantially balanced out.In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire quilt It is set as at least part being mutually symmetrical.

In one embodiment, on each side of outer framework, the movable end of the first SMA wire and the second SMA wire with Each side is at a distance of different distances.In one embodiment, on each side of outer framework, the first SMA wire and second The fixing end of SMA wire and each side are at a distance from different.Thus, it is ensured that two SMA wires of each side are due to contraction In mobile process, it will not occur to rub and adversely affect the position of lens module each other.

In one embodiment, lens module all has the first supporting part and second on each side of outer framework Bearing portion, the first supporting part and the second supporting part support the first SMA wire and the second SMA wire respectively.

In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is winding section, the One SMA wire is wrapped on winding section.

In one embodiment, winding section perpendicular to lens module optical axis be arranged, and have be parallel to optical axis around Cable architecture is wrapped on winding structure so that the first SMA wire is parallel to optical axis.In one embodiment, winding section is parallel to The optical axis of lens module is arranged, and has the winding structure perpendicular to optical axis, thus the first SMA wire perpendicular to optical axis be wrapped in around In cable architecture.In one embodiment, winding section has the winding structure of T shape or work shape, and the first SMA wire is wrapped in winding section T shape or work shape winding structure on.

In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is that movable end is fixed Portion, the first SMA wire are fixed on movable end fixed part.In one embodiment, the first SMA wire includes the SMA of two-phase seperation Line segment, the inside of movable end fixed part further include conducting element, and conducting element is arranged between the SMA wire section of two-phase seperation.By It is greater than the resistivity of SMA in the resistivity of common conductive element, therefore SMA wire can get more voltages, improves electric energy benefit With rate.In various embodiments, the first SMA wire may also comprise whole SMA wire, rather than the two sections of SMA wire sections separated；? In this case, without using additional conducting element in movable end fixed part.

It should be appreciated that in the case where not having conflict, the technical characteristic described in any above embodiment Entirely or partly it can be used in other embodiments.For example, a winding section can be replaced in embodiment described in Figure 1A It is changed to movable end fixed part, and another winding section keeps the winding section using winding section shown in figure 1A or other structures.

Further, the embodiment based on optical module described above and winding structure, the application also proposed one The method that kind winds marmem SMA wire on optical module, wherein optical module includes the camera lens mould with outer framework The fixation device of block and one group of diagonal zones that lens module is set, this method comprises: around outer framework installation SMA wire with shape At four sides facing each other (for example, four sides be rectangle), wherein the SMA wire being arranged on each side includes First SMA wire and the second SMA wire, and the first SMA wire and the second SMA wire are arranged to intersected with each other but do not contact, wherein SMA wire is in tensioned state during the installation process, and thus the position of lens module can preferably be kept.

In one embodiment, outer framework includes the first bearing corresponding to another group of diagonal zones of each side Portion and the second supporting part；Fixed device is all had on stationary plane corresponding with each side respectively with the first supporting part and with the It includes: when lens module is leaned on that corresponding first fixed part of two supporting parts and the second fixed part, which install SMA wire around outer framework, When an angular zone in nearly another group of diagonal zones (for example, upper right corner of Fig. 5), in outer framework in angular zone The movable end of first SMA wire is supported on the first supporting part by each of two adjacent sides, solid by two of the first SMA wire Fixed end is fixed on the first fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by two of the second SMA wire Fixing end is fixed on the second fixed part；And (the example when another angular zone in another group of diagonal zones of lens module Such as, the lower left corner of Fig. 5), in each of two in another angular zone adjacent side of outer framework, by the first SMA The movable end of line is supported on the first supporting part, and two fixing ends of the first SMA wire are fixed on the first fixed part, and by second The movable end of SMA wire is supported on the second supporting part, and two fixing ends of the second SMA wire are fixed on the second fixed part.

In embodiments, the first fixed part may include the first power supply fixed part and the first ground wire fixed part, and second is fixed Portion may include second source fixed part and the second ground wire fixed part.At this point, including: when camera lens mould around outer framework installation SMA wire When an angular zone of the block in another group of diagonal zones, in two adjacent sides in an angular zone of outer framework Each of, the movable end of the first SMA wire is supported on the first supporting part, two fixing ends of the first SMA wire are separately fixed at First power supply fixed part and the first ground wire fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by second Two fixing ends of SMA wire are separately fixed at second source fixed part and the second ground wire fixed part；And when lens module is close When another angular zone in another group of diagonal zones, in two in another angular zone adjacent side of outer framework Each of, the movable end of the first SMA wire is supported on the first supporting part, two fixing ends of the first SMA wire are separately fixed at First power supply fixed part and the first ground wire fixed part, and the movable end of the second SMA wire is supported on the second supporting part, by second Two fixing ends of SMA wire are separately fixed at second source fixed part and the second ground wire fixed part.

It, should although being not shown between lens module and fixed device in figure has gap for example, with reference to Fig. 5 Understand that there is gap appropriate between the region that the outer rim of lens module and fixed device limit.The gap is exactly utilized, it is real Displacement needed for existing above-mentioned optical anti-vibration.According to the method for winding of the application, lens module is set to first and is close to or leans on Fixed device closely corresponding with first side 1 and second side 2, that is, close to the upper right comer region shown in Fig. 5.By first side 1 It is wrapped on the first winding section with the movable end of the first SMA wire in second side 2, it will be in first side 1 and second side 2 The movable end of second SMA wire is wrapped on the second winding section.The step of movable end is wrapped in winding section can be by camera lens mould Block be set to be close to or the step of the close 2 corresponding fixed device with first side 1 and second side before or after execute all It is possible.It is close to or close fixed device corresponding with first side 1 and second side 2, simultaneously lens module to be set to And the movable end of the SMA wire of first side 1 and second side 2 is wrapped in after corresponding winding section, by first side 1 and second Two fixing ends of the first SMA wire on side 2 are fixed on the first power supply fixed part and the first ground wire fixed part of corresponding side surface, And two fixing ends of the second SMA wire are separately fixed to the second source fixed part and the second ground wire fixed part of corresponding side surface.

Then, it is as above provided with after SMA wire in first side 1 and second side 2, lens module is set to and is leaned on Tight or close fixed device corresponding with third side 3 and the 4th side 4, that is, close to the lower left corner region shown in Fig. 5.By The movable end of three sides 3 and the first SMA wire on the 4th side 4 is wrapped on the first winding section, by first side 1 and second side The movable end of the second SMA wire on face 2 is wrapped on the second winding section.Equally, the step of movable end being wrapped in winding section can With lens module is set to be close to or it is close with third side 3 and the 4th 4 corresponding fixed device of side the step of before Or it executes all be possible later.It is close to or close corresponding with third side 3 and the 4th side 4 lens module to be set to The movable end of fixed device and the SMA wire of third side 3 and the 4th side 4 is wrapped in after corresponding winding section, by third Two fixing ends of side 3 and the first SMA wire on the 4th side 4 are fixed on the first power supply fixed part and first of corresponding side surface Ground wire fixed part, and two fixing ends of the second SMA wire are separately fixed to the second source fixed part and second of corresponding side surface Ground wire fixed part.The coiling setting of SMA wire is completed as a result,.

By above method, there are two SMA wires in each side of the outer framework of lens module, every SMA wire is all The arrangement of the double-deck line.Shunk under driving as a result, and the SMA wire that drives camera lens mobile have compared with the prior art it is bigger strong Degree.

Further, the distance moved in the plane perpendicular to optical axis due to camera lens in order to realize optical anti-vibration is very Small, usually in micron dimension, therefore, the spacing between range that the outer framework of lens module and fixed device are formed is minimum.Phase It is often more loose than in the SMA wire being arranged in the prior art, the effect being more tensioned is had according to the SMA wire of above method setting Fruit.

In one embodiment, in the adjacent side of outer framework, set symmetrical for SMA wire.Implement at one In mode, on each side of outer framework, the first SMA wire and the second SMA wire are set as being mutually symmetrical and having the same Length.In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire are arranged to have that This symmetrical at least part.

In one embodiment, on each side of outer framework, by the movable end of the first SMA wire and the second SMA wire It is set as with each side at a distance from different.In one embodiment, on each side of outer framework, by first The fixing end of SMA wire and the second SMA wire is set as with each side at a distance from different.

When the movable end of the first SMA wire is fixed on corresponding supporting part, the first SMA wire includes two SMA sub-line sections.? In this case, installing the first SMA wire around outer framework includes: by the both ends of every SMA sub-line section in two SMA sub-line sections point It is not fixed on the first supporting part and the first fixed part, wherein the interconnecting piece of the first supporting part and every root line segment is conductive structure, To make two SMA sub-line sections be electrically connected at the first supporting part.It specifically, can be by the first SMA in two SMA sub-line sections The both ends of line segment are individually fixed in the first supporting part and the first power supply fixed part, by the 2nd SMA sub-line in two SMA sub-line sections The both ends of section are individually fixed in the first supporting part and the first ground wire fixed part.

When the movable end of the first SMA wire is fixed on corresponding supporting part, it can will also be fixed on the first of the first fixed part SMA wire is led to outward from the first fixed part to be connected with external circuit board, wherein the SMA drawn outward from the first fixed part Line is relaxed state, is broken to avoid in contraction later.

Above description is only the better embodiment of the application and the explanation to institute's application technology principle.Art technology Personnel should be appreciated that protection scope involved in the application, however it is not limited to skill made of the specific combination of above-mentioned technical characteristic Art scheme, while should also cover in the case where not departing from the application design, it is carried out by above-mentioned technical characteristic or its equivalent feature Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims

1. a kind of method for winding SMA wire on optical module, wherein the optical module includes the camera lens mould with outer framework The fixation device of block and one group of diagonal zones that the lens module is set, which comprises

Around outer framework installation SMA wire to form four sides facing each other, wherein on each side, the SMA Line includes the first SMA wire and the second SMA wire, and first SMA wire and second SMA wire are arranged to intersected with each other but not Contact, wherein the SMA wire is in tensioned state during the installation process.

2. the method for claim 1, wherein four sides are formed rectangle.

3. the method for claim 1, wherein

The outer framework includes the first supporting part and the second supporting part corresponding to another group of diagonal zones of each side；

The fixed device all has and first supporting part and institute on stationary plane corresponding with each side respectively Corresponding first fixed part of the second supporting part and the second fixed part are stated,

Include: around outer framework installation SMA wire

When an angular zone of the lens module in another group of diagonal zones, institute is in the outer framework The movable end of first SMA wire is supported on first bearing by each of two adjacent sides for stating an angular zone Two fixing ends of first SMA wire are fixed on first fixed part by portion, and by the movable end of second SMA wire It is supported on second supporting part, two fixing ends of second SMA wire are fixed on second fixed part；And

When another angular zone in another group of diagonal zones of the lens module, in being in for the outer framework The movable end of first SMA wire is supported on described first by each of two adjacent sides of another angular zone Two fixing ends of first SMA wire are fixed on first fixed part by supporting part, and by the work of second SMA wire Moved end is supported on second supporting part, and two fixing ends of second SMA wire are fixed on second fixed part.

4. method as claimed in claim 3, wherein first fixed part includes that the first power supply fixed part and the first ground wire are solid Determine portion, second fixed part includes second source fixed part and the second ground wire fixed part, wherein install around the outer framework SMA wire includes:

When an angular zone of the lens module in another group of diagonal zones, institute is in the outer framework The movable end of first SMA wire is supported on first bearing by each of two adjacent sides for stating an angular zone Two fixing ends of first SMA wire are separately fixed at the first power supply fixed part and first ground wire are fixed by portion Portion, and the movable end of second SMA wire is supported on second supporting part, by two fixing ends of second SMA wire It is separately fixed at the second source fixed part and the second ground wire fixed part；And

When another angular zone in another group of diagonal zones of the lens module, in being in for the outer framework The movable end of first SMA wire is supported on described first by each of two adjacent sides of another angular zone Two fixing ends of first SMA wire are separately fixed at the first power supply fixed part and first ground wire by supporting part Fixed part, and the movable end of second SMA wire is supported on second supporting part, it is solid by two of second SMA wire Fixed end is separately fixed at the second source fixed part and the second ground wire fixed part.

5. method as claimed in claim 4, wherein first SMA wire is located at first supporting part and described first The first line segment between power supply fixed part and the second line between first supporting part and the first ground wire fixed part Section be arranged to parallel to each other, second SMA wire between second supporting part and the second source fixed part Third line segment and the 4th line segment between second supporting part and the second ground wire fixed part be arranged to each other In parallel.

6. the method for claim 1, wherein in the adjacent side of the outer framework, set the SMA wire to pair Claim.

7. the method for claim 1, wherein on each side of the outer framework, by first SMA wire and institute The second SMA wire is stated to be set as being mutually symmetrical and length having the same.

8. method as claimed in claim 3, wherein on each side of the outer framework, by first SMA wire and institute The movable end for stating the second SMA wire is set as with each side at a distance from different.

9. method as claimed in claim 3, wherein on each side of the outer framework, by first SMA wire and institute The fixing end for stating the second SMA wire is set as with each side at a distance from different.

10. method as claimed in claim 3, wherein the movable end of first SMA wire and second SMA wire winding or It is fixed on first supporting part and second supporting part.

11. method as claimed in claim 3, wherein at least described in first SMA wire and second SMA wire One SMA wire includes two SMA sub-line sections, installs first SMA wire around the outer framework and includes:

The both ends of every SMA sub-line section in two SMA sub-line section are individually fixed in first supporting part and described First fixed part, wherein the interconnecting piece of first supporting part and every root line segment is conductive structure, to make described two SMA sub-line section is electrically connected at first supporting part.

12. method as claimed in claim 11, wherein first fixed part includes the first power supply fixed part and the first ground wire Fixed part, wherein installing first SMA wire around the outer framework includes:

The both ends of the first SMA sub-line section in two SMA sub-line section are individually fixed in first supporting part and described The both ends of the 2nd SMA sub-line section in two SMA sub-line section are individually fixed in described first by the first power supply fixed part Bearing portion and the first ground wire fixed part.

13. method as claimed in claim 3 further comprises:

The SMA wire for being fixed on first fixed part is led to outward from first fixed part and is connected with circuit board, wherein The SMA wire drawn outward from first fixed part is relaxed state.