CN207718059U - A kind of camera module of drive component, lens assembly and its auto-focusing - Google Patents

Abstract

The utility model discloses the camera modules of a kind of drive component, lens assembly and its auto-focusing; the driving component includes by the fixed protection eyeglass of supporting mechanism; the deformation eyeglass that setting is driven by driving mechanism below protective glass piece; it is equipped with support ring between the driving mechanism and deformation eyeglass, driving mechanism drives support ring close or leaves protection eyeglass；The driving mechanism includes the bias layer being sequentially overlapped, heating layer and driving layer, and the coefficient of thermal expansion of layer material is driven to be more than the coefficient of thermal expansion of biasing layer material, and layer is driven to be heated along the bedding angle expansion of driving layer；Driving mechanism one end is fixed in fixed ring, and the other end is fixed on support ring, and driving mechanism of two bias layers towards support ring is symmetrical arranged between fixed ring and support ring.Using the drive component of the utility model, zoom stroke is shortened, the shoulder height and overall volume of camera module is effectively reduced, keeps modular construction compacter, be conducive to the miniaturization of camera module.

Description

A kind of camera module of drive component, lens assembly and its auto-focusing

Technical field

The utility model belongs to camera module design field, more particularly to a kind of drive component, lens assembly and The camera module of its auto-focusing.

Background technology

In recent years, as smart mobile phone gradually gos deep into people’s lives, it is greatly promoted the fast development of mobile phone industry, Therefore the fast development with the relevant camera module industry of smart mobile phone is also promoted.As mobile phone the more does the more thin, camera module It is also smaller and smaller using space, promoting research staff not turn off, to send out the comprehensive performances such as small low energy consumption, low noise excellent Different camera module.

In order to improve pickup quality, need to set up drive component in camera module to drive camera motion to realize focusing.It is existing There is drive component in technology routinely to use motor configuration, so that camera module is realized auto-focusing, to enable people to clap Higher-quality camera shooting picture is taken out, and the mainstream way that auto-focusing is also current is realized using motor configuration.But pass through When motor configuration realizes auto-focusing, camera lens can carry out longitudinal movement under the induced effect of motor carrier, this is just needed for mirror Head reserves certain longitudinal movement space, increases the fore-and-aft distance of camera module, simultaneously because drive motor carrier movement Driver and coil are also required to occupy certain space, cause the volume of motor larger, and then lead to automatic focusing camera module Volume also be difficult to reduce, become current mobile phone and do a thin limitation.Volume smaller is further developed, performance is more excellent Auto-focusing module have become Important Problems of current camera module industry.

It is disclosed in the International Application that international publication number is 2017/148434 A1 of WO a kind of for lens barrel positioning In this device, smart machine, microdrive heated bending, phase are positioned at by microdrive by MEMS devices for lens barrel Lens barrel is moved for pedestal, to control the three axis positioning of lens barrel.But since the periphery that microdrive is set to lens barrel is used for Lens barrel is driven, therefore certain accommodation space is needed for microdrive to be arranged, therefore where lens barrel in the periphery of lens barrel The volume of camera module is difficult to reduce.

Utility model content

The utility model provides a kind of drive component, shortens the focusing stroke of autofocus mechanism so that modular construction It is compacter, reduce the shoulder height and overall volume of camera module.

A kind of drive component, including fixed ring and above the fixed ring by the fixed protection eyeglass of supporting mechanism, it is described Fixed ring be fixed on supporting mechanism, the deformation eyeglass that is driven by driving mechanism, institute are set between fixed ring and protection eyeglass Support ring is equipped between the driving mechanism stated and deformation eyeglass, driving mechanism drives support ring close or leaves protection eyeglass.

The driving mechanism includes the bias layer being sequentially overlapped, heating layer and driving layer, drives the thermal expansion of layer material Coefficient is more than the coefficient of thermal expansion of biasing layer material, and drives the bedding angle expansion of the heated edge driving layer of layer；Driving mechanism one End is fixed in fixed ring, and the other end is fixed on support ring, and two bias layer courts are symmetrical arranged between fixed ring and support ring To the driving mechanism of support ring.

Preferably, the deformation eyeglass can fit in protective glass piece lower surface.

Protection eyeglass is located above distorting lens piece, has high intensity and high light transmittance, shields, prevents to deformation eyeglass Eyeglass structural failure under external force is only deformed, while nor affecting on light and entering module internal.When focusing, driving mechanism Drive support ring close to protection eyeglass, support ring juxtaposition metamorphose eyeglass simultaneously squeezes, and protection eyeglass can be to deforming upper lens surface Barrier effect is played, so that distorting lens piece lower surface deforms upon under the extruding of driving mechanism, to realize auto-focusing.

Preferably, the deformation eyeglass can fit in support ring upper surface, and as support ring moves together.Driving Mechanism drives support ring to be squeezed close to protection eyeglass when the deformation eyeglass in support ring reaches protective glass piece lower surface, It deforms upon.

The effect of support ring is so that deformation eyeglass uniform force, avoids the excessive influence zoom rate of local pressure and zoom Effect, while also avoiding deformation eyeglass local pressure is excessive deformation eyeglass is caused to be damaged.

Preferably, the driving mechanism is set as arc, and arcuate structure increases the length of each driving mechanism, to Increase the deformation quantity of driving mechanism, enabling effectively increase the driving trip of driving mechanism.

In driving mechanism, bias layer and the driving layer material that can to select two kinds of coefficient of thermal expansion different drive layer material Coefficient of thermal expansion be more than biasing layer material coefficient of thermal expansion.

Preferably, the bias layer is silicon materials, and the driving layer is spaced silicon materials and SU-8 materials.

Silicon materials have good thermal conductivity, therefore the heat that heating layer generates can more quickly be conducted to SU-8 materials Material.Since the thermal expansivity of SU-8 materials is better than the thermal expansivity of silicon, works as SU-8 material expanded by heating, interval can be set The silicon structure set struts, and makes driving mechanism to bias layer direction warpage, and then forming driving layer can drive bias layer realization curved Song, and then push support ring, crimp eyeglass so that deformation eyeglass deforms upon and then changes focal length, realizes auto-focusing.

When needing focusing, the heating layer of driving mechanism is heated in control, and bias layer and driving layer are received and come from After the heat of heating layer, driving layer is deformed upon mainly along driving layer and bias layer fitting direction, drives the deformation quantity of layer big In the deformation quantity of bias layer, and squeeze bias layer so as to bias layer warpage occurs for driving mechanism, and drives support ring close to guarantor Protecting lens realize auto-focusing so that deformation eyeglass is squeezed and deforms upon.

After focusing, stops heating heating layer, wait for heating layer gradually to cool down, to keep driving mechanism gradual It is restored to initial position, and support ring is driven to leave protection eyeglass, deformation eyeglass restPoses.

Preferably, two bias layers drive layer direction towards two arranged symmetrically between the driving mechanism of support ring The driving mechanism of support ring.After focusing, stop to the first two driving mechanism heat, and to two driving layers towards support The heating layer of the driving mechanism of ring heats, and so that driving layer is squeezed bias layer and warpage occurs downwards, support ring is driven to move downward, from Protection eyeglass is opened, initial position is quickly returning to.Shorten deformation eyeglass and return to original state the required time, improves focusing Response efficiency.

Preferably, two bias layers more than two and are even number towards setting between the driving mechanism of support ring Driving mechanism, and the bias layer of the adjacent driving mechanism of any two is towards opposite.Multiple driving mechanism cooperations so that driving Mechanism, which drives support ring close or leaves, protects the speed of eyeglass all to further speed up, while making Zoom control more flexible, Can there are more selections and fit system.

Further, the direction driving machine opposite with oneself of a bias layer is closely arranged in each driving mechanism Structure constitutes driving mechanism pair, and the bias layer of the adjacent driving mechanism of any two is towards on the contrary.By individually controlling each drive The heating layer of motivation structure, the driving mechanism that when focusing can control multiple bias layers towards support ring heat so that support ring is leaned on Nearly protection eyeglass, crimp eyeglass realize focusing；After the cessation of the heating, immediately to all driving drivings of the layer towards support ring The heating layer of mechanism heats, and drives support ring quickly to leave protection eyeglass, moves back down to initial position, further shortens and becomes Shape eyeglass returns to original state the required time, improves the response efficiency of focusing.

Preferably, the heating layer of each driving mechanism individually controls heating time and heating temperature, according to heating layer The control of heating temperature and heating time, additionally it is possible to adjust the deformation quantity and speed of deformation of driving mechanism.

The utility model additionally provides a kind of lens assembly, including camera lens, and drive component is provided with above the camera lens.

Preferably, the fixed ring of the driving mechanism lower part can be fixed on camera lens upper surface.

Preferably, the fixed ring of the driving mechanism lower part can be fixed on supporting mechanism.

Preferably, the fixed ring of the driving mechanism lower part can be with camera lens one, and driving mechanism one end is directly anchored to Camera lens upper surface, the other end are fixed in support ring.

Preferably, the lens assembly can also include microscope base, and the lower part of the supporting mechanism of the driving component is fixed On microscope base, top is fixed with protection eyeglass.

Further, the supporting mechanism is cylinder, and the lower part of cylinder is fixed on microscope base, and top and protection eyeglass are solid It is fixed.

Further, the protection eyeglass is integrally formed with supporting mechanism, and protective glass piece lower part is fixed on microscope base.

Preferably, the lower part of the supporting mechanism can directly be fixed with camera lens, and top is fixed with protection eyeglass.Pass through It reduces supporting mechanism and so that modular construction is compacter.For traditional module for driving camera lens by voice coil motor, Motor configuration can be saved, the overall volume of module is effectively reduced.

Preferably, the supporting mechanism is cylinder, and lower part and the camera lens of cylinder are fixed, and top is fixed with protection eyeglass. After supporting mechanism is installed on camera lens at this time, can with camera lens upper surface formed an accommodation space, for accommodate deformation eyeglass and Driving mechanism and support ring between the two.

Preferably, the protection eyeglass is integrally formed with supporting mechanism, and protective glass piece lower part is fixed with camera lens.

Preferably, the lower part of the supporting mechanism is fixed on the side of camera lens.For the ease of actual production and assembling, Camera lens side can be a plane or inclined surface so that support construction can more be stably mounted at camera lens side, improve mould The structural stability of group.

The utility model additionally provides a kind of camera module of auto-focusing, including lens assembly, wiring board, sensitive chip And filter element, the wiring board are connect by conducting element with the heating layer of driving mechanism in lens assembly, the lens group Part is located on the photosensitive path of the sensitive chip, and the filter element is between sensitive chip and lens assembly, photosensitive core Piece attaches in the circuit board.

It is electrically connected between the heating layer of driving mechanism and wiring board by being realized in conductive original paper built in microscope base, or passes through mirror The external conducting wire that directly leads out of head realizes electrical connection, so that wiring board can provide electric current for heating layer, heating layer is biasing Layer and driving layer provide heat.

The heating layer of driving mechanism passes through insert molding (insert molding technology) or LDS (laser direct forming skills Art) it realizes and is electrically connected with wiring board, the volume that circuit occupies in module is reduced, conducive to the miniaturization of module.

The utility model is installed on by that will deform eyeglass above driving mechanism, drives deformation eyeglass to realize with driving mechanism Auto-focusing shortens zoom stroke；So that modular construction is compacter by reducing supporting mechanism, eliminate motor configuration, The shoulder height and overall volume for effectively reducing camera module, are conducive to the miniaturization of module.

Description of the drawings

Fig. 1 is the structural schematic diagram of the drive component of the utility model；

Fig. 2 is the internal structure schematic diagram of the driving mechanism of the utility model；

Fig. 3 is that the lens assembly of the utility model fixes supporting mechanism using first way and fixed ring and camera lens are integrated Structural schematic diagram；

Fig. 4 is that the lens assembly of the utility model fixes supporting mechanism using first way and fixed ring is seperated with camera lens Structural schematic diagram；

Fig. 5 is the utility model using the structural schematic diagram after two driving mechanism assemblings；

Fig. 6 is the utility model using the structural schematic diagram after four driving mechanism assemblings；

Fig. 7 is the utility model using the structural schematic diagram after four pairs of driving mechanism assemblings；

Fig. 8 is that the lens assembly of the utility model fixes the structural schematic diagram of supporting mechanism using the second way；

Fig. 9 is that the lens assembly of the utility model fixes the structural schematic diagram of supporting mechanism using the third mode；

Figure 10 is the structural schematic diagram of the camera module of the auto-focusing of the utility model.

Specific implementation mode

The embodiment of the utility model is described with reference to the accompanying drawings of the specification.

As shown in Figure 1, the drive component of the utility model, including fixed ring 7 and positioned at 7 top of fixed ring by supporting mechanism 2 fixed protection eyeglasses 3, fixed ring 7 are fixed on supporting mechanism 2, are arranged by driving mechanism 4 between fixed ring 7 and protection eyeglass 3 The deformation eyeglass 5 of driving is equipped with support ring 6 between driving mechanism 4 and deformation eyeglass 5, and driving mechanism 4 can drive support ring 6 It is close or leave protection eyeglass 3.

As shown in Fig. 2, the structural schematic diagram of the driving mechanism 4 for the utility model.Driving mechanism 4 includes being sequentially overlapped Bias layer 41, heating layer 42 and driving layer 43, driving layer 43 are the silicon materials of comb teeth-shaped, are filled out by SU-8 materials at broach It fills, forms silicon SU-8 stacked structures；Bias layer 41 is silicon materials.Heating layer 42 is directly between circuit board by built in microscope base Conductive original paper realizes electrical connection, or is electrically connected with circuit realization by directly leading out conducting wire outside camera lens.Silicon has good lead It is hot, therefore the heat that heater generates can more quickly be conducted to SU-8 materials.When SU-8 materials are heated, the master of SU-8 It is that laterally, i.e., X-direction expands along Fig. 2 to want expansion direction.Since the thermal expansivity of SU-8 materials is better than the thermal expansivity of silicon, Therefore the SU-8 materials after expanding can strut the silicon structure of comb teeth-shaped, make driving layer to bias layer direction warpage, then shape Bias layer 41 can be driven to realize bending at driving layer 43, and then push support ring 6, crimp eyeglass 5 so that deformation eyeglass 5 deform upon and then change focal length, realize auto-focusing.

Lens assembly includes drive component and camera lens.Supporting mechanism in lens assembly has several fixed form, driving Also there are many kinds of assembling modes between camera lens and support ring for mechanism.

Embodiment 1

The lens assembly of the present embodiment uses the first supporting mechanism fixed form, and fixed ring and camera lens one, such as Fig. 3 It is shown, including camera lens 1, supporting mechanism 2, protection eyeglass 3, driving mechanism 4, deformation eyeglass 5 and support ring 6.Supporting mechanism 2 will be protected Protecting lens 3 are fixed on right over camera lens 1, and 2 bottom of supporting mechanism is fixed on microscope base.Camera lens 1 and protection eyeglass 3 between setting by The deformation eyeglass 5 that driving mechanism 4 drives is equipped with support ring 6 between driving mechanism 4 and deformation eyeglass 5.Fixed ring 7 and camera lens 1 one Body, 4 one end of driving mechanism are directly anchored to 1 upper surface of camera lens.Fixed ring 7 and 1 integral structure of camera lens, since fixed ring 7 is straight It connects and is fixed on 1 top of camera lens, therefore the avoiding space even ignored between fixed ring 7 and camera lens 1 can be reduced, reduce camera lens Height of the component in optical axis direction.

Further, fixed ring 7 and camera lens 1 or split structure, as shown in figure 4, driving mechanism 4 is fixed on Determine between ring 7 and support ring 6, fixed ring 7 is fixed on supporting mechanism 2.

The present embodiment assembles two driving mechanisms between camera lens 1 and support ring 6, as shown in figure 5, showing three in figure altogether A donut, wherein the donut of the inside two indicates that the position that driving mechanism 4 is installed, innermost annulus indicate camera lens 1, Intermediate annulus indicates that support ring 6, outmost annulus indicate the outer diameter of protection eyeglass 3.In the present embodiment, in 6 He of support ring 2 driving mechanisms are symmetrically fixed between camera lens 1, respectively driving mechanism a and driving mechanism c, 2 driving mechanism one end are fixed on Camera lens upper end, the other end are fixed on 6 lower end of support ring, and drive layer 43 towards camera lens 1, and bias layer 41 is towards support ring 6.

Two driving mechanisms are arc-shaped to be mounted between camera lens 1 and support ring 6, and arcuate structure increases each driving mechanism Length, to increase the deformation quantity of driving mechanism, enabling effectively increase driving mechanism driving trip.

When needing focusing, the heating layer 42 of driving mechanism a and driving mechanism c are heated, when bias layer 41 and driving After layer 43 receives the heat from heating layer 42, the deformation quantity of driving layer 43 is more than the deformation quantity of bias layer 41, and drives layer 43 thermal expansion direction is lateral expansion, i.e., is expanded to X-direction so that the gap between the comb teeth-shaped structure of bias layer 41 becomes Greatly, it squeezes bias layer 41 and warpage occurs, since bias layer 41 can when warpage occurs for bias layer 41 towards support ring 6 It pushes support ring 6 to move, and extruding is generated to deformation eyeglass 5, so that deformation 5 stress of eyeglass deforms upon, realize automatic Focusing.

Wherein heating layer 42 is made using the preferable material of heat conductivility, can generate heat after conducting wire galvanization, The heating that other materials was realized to bias layer 41 and driven layer 43 by input current may be used.When the different electric current of input When, different heats can be generated, therefore the deformation quantity that driving mechanism 4 occurs also can be different, therefore can be by controlling input electricity The size of stream controls the deformation quantity of driving mechanism 4, to drive deformation eyeglass 5 to occur different degrees of deformation.

After focusing, stop heating, waits for heating layer 42 gradually to cool down, to enable driving mechanism 4 gradually to restore To initial position, and support ring 6 is driven to leave deformation eyeglass 5, deformation eyeglass 5 restores reset condition.

Further, setting support ring 6 is to be able to make support ring 6 and become between deformation eyeglass 5 and driving mechanism 4 Contact area with bigger between shape eyeglass 5 prevents driving mechanism 4 to be in direct contact deformation eyeglass 5 and will produce unbalance stress, leads The damaged situation of mutagens shape eyeglass 5.

The present embodiment driving mechanism drives deformation eyeglass to realize auto-focusing, shortens zoom stroke, eliminates motor Structure makes lens assembly structure compacter by reducing supporting mechanism, effectively reduces the shoulder height of camera module and whole body Product, is conducive to the miniaturization of module.

Embodiment 2

The present embodiment on the basis of lens assembly uses the first fixed form supporting mechanism, camera lens and support ring it Between assemble four driving mechanisms 4.As shown in fig. 6, between driving mechanism a and driving mechanism c the two identical driving mechanisms The driving layer 43 of driving mechanism b and driving mechanism d, driving mechanism b and driving mechanism d are symmetrical arranged towards support ring 6, bias layer 41 towards camera lens 1.4 driving mechanisms 4 are evenly arranged between support ring 6 and camera lens 1, and be centrosymmetric setting.

Further, the heating layer 42 of each driving mechanism corresponds to an individual controller respectively so that Mei Gejia Thermosphere 42 can be controlled by respective controller and be heated, and individually control each driving mechanism 4, when camera module is in difference When state, it can make driving mechanism 4 that different deformation quantities occur, to be adapted to not by individually controlling each driving mechanism 4 With the module under state.

When needing focusing, the heating layer 42 of driving mechanism a and driving mechanism c are heated, when bias layer 41 and driving After layer 43 receives the heat from heating layer 42, driving mechanism 4 and 1 fixed one end of camera lens are motionless, drive the deformation of layer 43 Amount is more than the deformation quantity of bias layer 41, and it is lateral expansion to drive the thermal expansion direction of layer 43, i.e., is expanded to X-direction so that partially The gap set between the comb teeth-shaped structure of layer 41 becomes larger, and squeezes bias layer 41 and warpage occurs, since bias layer 41 is towards support ring 6, therefore when warpage occurs for bias layer 41, support ring 6 can be pushed to move, and extruding is generated to deformation eyeglass 5, so that Deformation 5 stress of eyeglass deforms upon, and realizes auto-focusing.

After focusing, stop heating the heating layer 42 of driving mechanism a and driving mechanism c, to driving mechanism b and driving The heating layer 42 of mechanism d heats.Since the driving layer 43 of driving mechanism b and driving mechanism d is towards support ring 6,41 court of bias layer To camera lens 1, when warpage occurs for bias layer 41, driving mechanism 4 can be in the same direction with support ring 6 one with 6 fixed one end of support ring Lower warpage makes support ring 6 be moved to 1 direction of camera lens, deformation eyeglass 5 is made to be restored to initial position.

In the present embodiment, by driving layer 43 and the setting of the interval of bias layer 41 so that driving mechanism 4 can be stuck up to different directions Song, while also making driving mechanism 4 when driving deformation eyeglass 5 moves, deformation eyeglass 5 can be made to be in a relatively stable position It sets, prevents deformation 5 unilateral stress of eyeglass or unbalance stress from causing deformation eyeglass 5 that uncontrollable deformation occurs.

After driving mechanism a and driving mechanism c drivings support ring 6, which move upwards crimp eyeglass 5, completes auto-focusing, Heat up to driving mechanism b and driving mechanism d so that driving mechanism b and driving mechanism d downsaggings, drive support ring 6 to Lower movement, quickly returns to initial position, can effectively improve response efficiency, shortens the response time, improves the user experience Sense.

When module needs autozoom, the heating layer of driving mechanism a and driving mechanism c are heated, driving machine is made Structure a and driving mechanism c generates upward thrust to deformation eyeglass 5, so that deformation eyeglass 5 is deformed upon and completes auto-focusing, is driving Under the action of motivation structure a and driving mechanism c drives up power, driving mechanism b and driving mechanism d and 6 fixed one end of support ring Also can be upturned, driving mechanism a and driving mechanism c plays active role at this time, and driving mechanism b and driving mechanism d rise from action With.It, need to be by the work temperature of driving mechanism 4 since driving mechanism 4 can deform upon at room temperature and be bent accordingly Degree be set above room temperature, at this point, when driving mechanism a and driving mechanism c be heated to operating temperature and it is upturned when, driving Without being heated, driving mechanism b and driving mechanism d can drive mechanism b and driving mechanism d with 6 fixed one end of support ring It is upturned therewith under the drive of motivation structure a and driving mechanism c.

When module completes auto-focusing, and deformation eyeglass 5 needs to be restored to initial position, stop to driving mechanism a and drive The heating layer of motivation structure c heats, and is heated to the heating layer of driving mechanism b and driving mechanism d, makes driving mechanism b and driving After mechanism d is heated, with 6 fixed one end downsagging of support ring, downward pulling force is generated to support ring 6, keeps deformation eyeglass 5 extensive Initial position is arrived again, and under the driving of driving mechanism b and driving mechanism d, driving mechanism a and driving mechanism c are fixed with support ring 6 One end can also restore to the original state therewith, driving mechanism b and driving mechanism d plays active role, driving mechanism a and driving mechanisms at this time C plays slaved operation.

The present embodiment increases the response speed of drive component focusing while keeping lens assembly structure compacter.

Embodiment 3

The present embodiment is on the basis of embodiment 2, by the setting of software in controller to driving mechanism heating layer 42 Heating temperature and heating time are controlled.Make driving mechanism since heating layer 42 needs certain heating-up time that can reach 4 temperature deformed upon, therefore can be set by software, when being heated to work to driving mechanism a and driving mechanism c While temperature, heat temperature raising also carried out to driving mechanism b and driving mechanism d, but the temperature of driving mechanism b and driving mechanism d Degree will be less than operating temperature, and driving mechanism b and driving mechanism d still being capable of sticking up with driving mechanism a and driving mechanism c at this time Qu Fangxiang is deformed upon, but after driving mechanism a and driving mechanism c driving deformation eyeglasses 5 complete auto-focusing, needs to become Shape eyeglass 5 restores to initial position, stops, to driving mechanism a and driving mechanism c heating, starting to driving mechanism b and drive at this time Motivation structure d heating, since the temperature of driving mechanism b and driving mechanism d scripts is already close to operating temperature, at this time to driving The heating time of motivation structure b and driving mechanism d are shorter, and driving mechanism b and driving mechanism d are enable to respond quickly, and support is circumferential Lower pulling, and deformation eyeglass 5 is made to be restored to initial position, it completes this time to focus.

It is intervally installed to the driving mechanism 4 of different directions warpage, can allow and deform 5 uniform force of eyeglass, avoid out Now there is a phenomenon where local deformations for deformation eyeglass 5, have both helped to improve zoom efficiency, it helps imaging effect when zoom.

Heating layer 42 in 4 driving mechanisms does not interfere with each other, and independently controls, and can effectively improve heating speed Rate is also prevented from there is a phenomenon where heating unevenness, while can improve the flexibility of heating, when driving mechanism quantity is more, also Software can be set in the controller, and according to actual needs the case where zoom, pointedly selection control is to all driving machines Structure 4 is heated, or is heated to part driving mechanism 4.

When compared to driving mechanism a and driving mechanism c work, not to driving mechanism b and driving mechanism d heat temperature raisings, originally Temperature-rising method in embodiment can allow deformation eyeglass after completing auto-focusing, more be rapidly restored to initial position, contract The short time completed needed for single focusing, effectively improve respective rate of the module in auto-focusing.

Embodiment 4

The present embodiment on the basis of embodiment 3, four driving mechanisms 4 all closely be arranged a bias layer 41 towards with Oneself opposite driving mechanism constitutes four driving mechanisms pair, amounts to eight driving mechanisms, and the driving machine that any two is adjacent The bias layer 41 of structure 4 is towards opposite.As shown in fig. 7, being close to driving mechanism a setting driving drivings of the layer 43 towards support ring 6 Mechanism A is close to driving mechanism b setting driving driving mechanism Bs of the layer 43 towards camera lens 1, is close to driving mechanism c setting drivings Layer 43 is close to driving mechanism D of the driving mechanism d setting driving layers 43 towards camera lens 1 towards the driving mechanism C of support ring 6.

When module needs autozoom, the heating layer 42 of driving mechanism a and driving mechanism c are heated (or it is right The heating layer 42 of driving mechanism B and driving mechanism D is heated), upward thrust is generated to support ring 6, and deformation eyeglass 5 is made to send out Auto-focusing is completed in raw deformation.

When module completes auto-focusing, and deformation eyeglass 5 needs to be restored to initial position, stop to driving mechanism a and drive The heating of motivation structure c is carried out at the same time heating to the heating layer of driving mechanism A, driving mechanism C, driving mechanism b and driving mechanism d, So that four driving mechanisms generate downward pulling force simultaneously to four positions of support ring 6, deformation eyeglass 5 is made to quickly recover to just Beginning position.

Coordinate control software, the control by controller to heating layer, to driving mechanism A, driving mechanism C, driving mechanism b It is preheated in advance with driving mechanism d, the response speed of focusing can be further increased.

Embodiment 5

The present embodiment is the lens assembly using second of supporting mechanism fixed form, as shown in figure 8, supporting mechanism 2 is Cylinder, lower part and 1 top of camera lens of cylinder are fixed, and top is fixed with protection eyeglass 5.

Protection eyeglass 3 can be also integrally formed with supporting mechanism 2, at this point, protection 3 lower part of eyeglass is fixed with camera lens 1.Support machine Structure 2, protection eyeglass 3 and camera lens 1 forms an accommodation space, for accommodating deformation eyeglass 5 and driving mechanism 4 and therebetween Support ring 6.

In the present embodiment, the mounting means of driving mechanism can select as Figure 4-Figure 6 in one kind.

The present embodiment makes lens assembly structure compacter by reducing supporting mechanism.Pass through voice coil compared to traditional For motor drives the camera module of camera lens, motor configuration can be saved, effectively reduces the overall volume of camera module.

Embodiment 6

The present embodiment is the lens assembly using the third supporting mechanism fixed form, as shown in figure 9, supporting mechanism 2 Lower part is fixed on the side of camera lens 1, and 1 side of camera lens is an inclined surface.

For the ease of actual production and assembling, the inclined surface of 1 side of camera lens is equipped with a transition plane so that supporting mechanism 2 can more be stably mounted at 1 side of camera lens, improve the structural stability of module.

In the present embodiment, the mounting means of driving mechanism can select as Figure 4-Figure 6 in one kind.

Further, can also be arranged in embodiment 5 and embodiment 6, between camera lens 1 and driving mechanism 4 as shown in Figure 1 Fixed ring 7, driving mechanism 4 are fixed in by fixed ring 7 above camera lens, and by the fixed function of fixed ring 7, are realized opposite In the warpage of camera lens 1, deformation eyeglass 5 is generated and is squeezed to make deformation eyeglass 5 deform upon, and realizes auto-focusing.

As shown in Figure 10, it is the utility model camera module, including lens assembly, wiring board 8, sensitive chip 9 and optical filtering Element 10, wiring board 8 are connect by conducting element with the heating layer of driving mechanism in lens assembly, and lens assembly is located at photosensitive 9 On the photosensitive path of chip, for filter element 10 between sensitive chip 9 and lens assembly, sensitive chip 9 attaches assist side 8 On.

Entire camera module eliminates motor configuration, and lens assembly structure is compacter.Pass through voice coil compared to traditional For motor drives the camera module of camera lens, the shoulder height and overall volume of camera module are effectively reduced.

It these are only the statement carried out to the main principle and spirit of the utility model, it is new to be not limited to this practicality Type, for those skilled in the art, the present invention may have various modifications and changes, all essences in the utility model God and principle within any modification, equivalent replacement, improvement and so on, should be included in the scope of protection of the utility model it It is interior.

Claims (22)

1. a kind of drive component, which is characterized in that including fixed ring and positioned at fixed ring top by the fixed protection of supporting mechanism Eyeglass, the fixed ring are fixed on supporting mechanism, the deformation driven by driving mechanism are arranged between fixed ring and protection eyeglass Eyeglass, is equipped with support ring between the driving mechanism and deformation eyeglass, driving mechanism drives support ring close or leaves protection Eyeglass；

The driving mechanism includes the bias layer being sequentially overlapped, heating layer and driving layer, drives the coefficient of thermal expansion of layer material More than the coefficient of thermal expansion of biasing layer material, and drive layer heated along the bedding angle expansion for driving layer；Driving mechanism one end is solid It is scheduled in fixed ring, the other end is fixed on support ring, and two bias layers are symmetrical arranged between fixed ring and support ring towards branch The driving mechanism of pushing out ring.

2. drive component according to claim 1, which is characterized in that the deformation eyeglass fits in protective glass piece following table Face.

3. drive component according to claim 1, which is characterized in that the deformation eyeglass fits in support ring upper table Face, and as support ring moves together.

4. drive component according to claim 1, which is characterized in that the driving mechanism is set as arc.

5. drive component according to claim 1, which is characterized in that the bias layer is silicon materials, the driving Layer is spaced silicon materials and SU-8 materials.

6. the drive component according to any claim in Claims 1 to 5, which is characterized in that two biasings Layer drives driving mechanism of the layer towards support ring towards two arranged symmetrically between the driving mechanism of support ring.

7. the drive component according to any claim in Claims 1 to 5, which is characterized in that two biasings Layer is towards driving mechanism of the setting more than two and for even number, and the drive that any two is adjacent between the driving mechanism of support ring The bias layer of motivation structure is towards on the contrary.

8. drive component according to claim 7, which is characterized in that a biasing is closely arranged in each driving mechanism The direction driving mechanism opposite with oneself of layer constitutes driving mechanism pair, and the bias layer of the adjacent driving mechanism of any two Towards on the contrary.

9. drive component according to claim 8, which is characterized in that the heating layer of each driving mechanism individually controls heating Time and heating temperature.

10. a kind of lens assembly, including camera lens, which is characterized in that it is any to be provided with claim 1~9 above the camera lens The drive component.

11. lens assembly according to claim 10, which is characterized in that the fixed ring of the driving mechanism lower part is fixed on Camera lens upper surface.

12. lens assembly according to claim 10, which is characterized in that the fixed ring and camera lens of the driving mechanism lower part One, driving mechanism one end are fixed on camera lens upper surface, and the other end is fixed in support ring.

13. the lens assembly according to any claim in claim 10~12, which is characterized in that the lens group Part further includes microscope base, and the lower part of supporting mechanism is fixed on microscope base, and top is fixed with protection eyeglass.

14. lens assembly according to claim 13, which is characterized in that the supporting mechanism is cylinder, under cylinder Portion is fixed on microscope base, and top is fixed with protection eyeglass.

15. lens assembly according to claim 13, which is characterized in that the protection eyeglass and supporting mechanism one at Type, protective glass piece lower part are fixed on microscope base.

16. according to the lens assembly described in claim 10~12 any claim, which is characterized in that the supporting mechanism Lower part fixed with camera lens, top with protection eyeglass fix.

17. lens assembly according to claim 16, which is characterized in that the supporting mechanism is cylinder, under cylinder Portion is fixed with camera lens, and top is fixed with protection eyeglass.

18. lens assembly according to claim 16, which is characterized in that the protection eyeglass and supporting mechanism one at Type, protective glass piece lower part are fixed with camera lens.

19. the lens assembly according to claim 17 or 18, which is characterized in that the lower part of the supporting mechanism is fixed on The side of camera lens.

20. a kind of camera module of auto-focusing, including lens assembly, wiring board, sensitive chip and filter element, feature exist In the lens assembly uses the lens assembly described in any claim in claim 10~19, the wiring board logical Conducting element is crossed to connect with the heating layer of driving mechanism in lens assembly.

21. the camera module of auto-focusing according to claim 20, which is characterized in that the wiring board and driving machine The heating layer of structure realizes electrical connection by insert molding mode.

22. the camera module of auto-focusing according to claim 20, which is characterized in that the wiring board and driving machine The heating layer of structure is realized by LDS and is electrically connected.