CN108121046A - A kind of camera module of drive component, lens assembly and its auto-focusing - Google Patents
A kind of camera module of drive component, lens assembly and its auto-focusing Download PDFInfo
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- CN108121046A CN108121046A CN201711483403.6A CN201711483403A CN108121046A CN 108121046 A CN108121046 A CN 108121046A CN 201711483403 A CN201711483403 A CN 201711483403A CN 108121046 A CN108121046 A CN 108121046A
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- 230000007246 mechanism Effects 0.000 claims abstract description 273
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 230000008450 motivation Effects 0.000 claims description 8
- 239000002210 silicon-based material Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
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- 235000012489 doughnuts Nutrition 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
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- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 239000003471 mutagenic agent Substances 0.000 description 1
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
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Abstract
The invention discloses the camera modules of a kind of drive component, lens assembly and its auto-focusing; the driving component is included by the fixed protection eyeglass of supporting mechanism; the deformation eyeglass driven by driving mechanism is set below protective glass piece; support ring is equipped 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 layer is driven to be heated and is expanded along the bedding angle of driving layer；Driving mechanism one end is fixed in retainer ring, and the other end is fixed on support ring, and driving mechanism of two bias layers towards support ring is symmetrical arranged between retainer ring and support ring.Using the drive component of the present invention, zoom stroke is shortened, the shoulder height and overall volume of camera module is effectively reduced, makes modular construction compacter, be conducive to the miniaturization of camera module.
Description
Technical field
The invention belongs to camera module design field, more particularly to a kind of drive component, lens assembly and its from
The camera module of dynamic focusing.
Background technology
In recent years, as smart mobile phone gradually gos deep into people’s lives, the fast development of mobile phone industry is greatly promoted,
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 less and less using space, research staff is promoted not turn off, and to send 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 camera motion to be driven to realize focusing.It is existing
There is drive component in technology routinely using motor configuration, camera module to be enable to realize auto-focusing, so as to enable people to clap
Higher-quality camera shooting picture is taken out, and realizes that auto-focusing is also current mainstream way 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, and the volume for causing motor is larger, and then cause 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.
International publication number be 2017/148434 A1 of WO International Application in disclose it is 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, so as to which three axis of lens barrel be controlled to position.But since the periphery that microdrive is arranged at lens barrel is used for
Lens barrel is driven, therefore certain accommodation space is needed for setting microdrive, therefore where lens barrel in the periphery of lens barrel
The volume of camera module is difficult to reduce.
The content of the invention
The present invention provides a kind of drive component, shorten the focusing stroke of autofocus mechanism so that modular construction is more
It is compact, reduce the shoulder height and overall volume of camera module.
A kind of drive component, it is described by the fixed protection eyeglass of supporting mechanism including retainer ring and above retainer ring
Retainer ring be fixed on supporting mechanism, retainer ring and protection eyeglass between set by driving mechanism drive deformation eyeglass, institute
Support ring is equipped between the driving mechanism and deformation eyeglass stated, 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 layer is driven to be heated along the bedding angle expansion for driving layer；Driving mechanism one
End is fixed in retainer ring, and the other end is fixed on support ring, and two bias layer courts are symmetrical arranged between retainer 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
Only deform eyeglass structural failure, while nor affect on light and enter module internal under external force.During focusing, driving mechanism
Driving support ring, support ring juxtaposition metamorphose eyeglass simultaneously squeezes close to protection eyeglass, 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, so as to fulfill auto-focusing.
Preferably, the deformation eyeglass can fit in support ring upper surface, and as support ring moves together.Driving
Mechanism drives support ring, when the deformation eyeglass in support ring reaches protective glass piece lower surface, to be squeezed close to eyeglass is protected,
It deforms upon.
The effect of support ring is so that deformation eyeglass uniform force, avoids local pressure is excessive from influencing zoom rate and zoom
Effect, while also avoid deformation eyeglass local pressure is excessive deformation eyeglass is caused to be damaged.
Preferably, the driving mechanism is arranged to arc, and arcuate structure adds the length of each driving mechanism, so as to
Increase the deformation quantity of driving mechanism, enabling the effectively driving trip of increase 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 be more quickly conducted to SU-8 materials
Material.Since the thermal expansivity of SU-8 materials is better than the thermal expansivity of silicon, when SU-8 material expanded by heating, interval can be set
The silicon structure put struts, and making driving mechanism, then forming driving layer can drive bias layer realization curved to bias layer direction warpage
Song, and then promote support ring, crimp eyeglass so that deformation eyeglass deforms upon and then changes focal length, realizes auto-focusing.
It when needing focusing, controls and the heating layer of driving mechanism is heated, 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, and the deformation quantity for driving layer is 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 so that deformation eyeglass is squeezed and deforms upon, realize auto-focusing.
After focusing, stop heating heating layer, heating layer is waited gradually to cool down, so that driving mechanism can be gradual
Initial position is restored to, 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 heating of the driving mechanism of ring makes driving layer squeeze bias layer and warpage occurs downwards, support ring is driven to move downward, from
Protection eyeglass is opened, is quickly returning to initial position.Shorten deformation eyeglass and return to original state the required time, improve 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 so that Zoom control is more flexible,
Can there are more selections and fit system.
Further, each driving mechanism closely sets the direction of the bias layer driving machine opposite with oneself
The bias layer of the adjacent driving mechanism of structure, composition driving mechanism pair, and any two is towards on the contrary.By individually controlling each drive
The heating layer of motivation structure, when focusing, can control the driving mechanism of multiple bias layers towards support ring to 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 heating of mechanism, 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
Heating temperature and the control of heating time, additionally it is possible to adjust the deformation quantity and speed of deformation of driving mechanism.
The present invention also provides a kind of lens assemblies, and including camera lens, drive component is provided with above the camera lens.
Preferably, the retainer ring of the driving mechanism lower part can be fixed on camera lens upper surface.
Preferably, the retainer ring of the driving mechanism lower part can be fixed on supporting mechanism.
Preferably, the retainer 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 is consolidated with protection eyeglass
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 that camera lens is driven by voice coil motor,
Motor configuration can be saved, effectively reduces the overall volume of module.
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 therebetween.
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 present invention also provides a kind of camera module of auto-focusing, including lens assembly, wiring board, sensitive chip and filter
Optical element, the wiring board are connected by conducting element with the heating layer of driving mechanism in lens assembly, the lens assembly position
In on the photosensitive path of the sensitive chip, the filter element is between sensitive chip and lens assembly, sensitive chip patch
It is attached in the circuit board.
By being electrically connected in conductive original paper realization built in microscope base or passing through mirror between the heating layer of driving mechanism and wiring board
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 diminution circuit occupies in module, beneficial to the miniaturization of module.
The present invention is installed on by that will deform eyeglass above driving mechanism, with driving mechanism deformation eyeglass is driven to realize automatic
Focusing, shortens zoom stroke；It is compacter by reducing supporting mechanism modular construction, motor configuration is eliminated, effectively
The shoulder height and overall volume of camera module are reduced, is conducive to the miniaturization of module.
Description of the drawings
Fig. 1 is the structure diagram of the drive component of the present invention；
Fig. 2 is the internal structure schematic diagram of the driving mechanism of the present invention；
Fig. 3 is the lens assembly of the present invention using first way fixation supporting mechanism and the knot of retainer ring and camera lens one
Structure schematic diagram；
Fig. 4 is the lens assembly of the present invention using first way fixation supporting mechanism and retainer ring and the knot of camera lens split
Structure schematic diagram；
Fig. 5 is the present invention using the structure diagram after two driving mechanism assemblings；
Fig. 6 is the present invention using the structure diagram after four driving mechanism assemblings；
Fig. 7 is the present invention using the structure diagram after four pairs of driving mechanism assemblings；
Fig. 8 is that the lens assembly of the present invention fixes the structure diagram of supporting mechanism using the second way；
Fig. 9 is that the lens assembly of the present invention fixes the structure diagram of supporting mechanism using the third mode；
Figure 10 is the structure diagram of the camera module of the auto-focusing of the present invention.
Specific embodiment
Embodiments of the present invention are described with reference to Figure of description.
As shown in Figure 1, the drive component of the present invention, is consolidated including retainer ring 7 and above retainer ring 7 by supporting mechanism 2
Fixed protection eyeglass 3, retainer ring 7 are fixed on supporting mechanism 2, set between retainer ring 7 and protection eyeglass 3 and driven by driving mechanism 4
Dynamic deformation eyeglass 5 is equipped with support ring 6 between driving mechanism 4 and deformation eyeglass 5, and driving mechanism 4 can drive support ring 6 to lean on
It is near or leave protection eyeglass 3.
As shown in Fig. 2, the structure diagram of the driving mechanism 4 for the present invention.Driving mechanism 4 includes the biasing being sequentially overlapped
Layer 41, heating layer 42 and driving layer 43, driving layer 43 are the silicon materials of comb teeth-shaped, are filled at broach by SU-8 materials,
Form silicon SU-8 stacked structures；Bias layer 41 is silicon materials.Heating layer 42 is directly between circuit board by being led built in microscope base
Electric original copy is realized electrical connection or is electrically connected by directly leading out conducting wire outside camera lens with circuit realization.Silicon has good heat conduction
Property, therefore the heat that heater generates can be more quickly conducted to SU-8 materials.When SU-8 materials are heated, SU-8's is main
Expansion direction is laterally, i.e., X-direction expands along Fig. 2.Since the thermal expansivity of SU-8 materials is better than the thermal expansivity of silicon, because
SU-8 materials after this expansion can strut the silicon structure of comb teeth-shaped, and driving layer is made then to be formed to bias layer direction warpage
Driving layer 43 can drive bias layer 41 to realize bending, and then promote support ring 6, crimp eyeglass 5 so that deformation eyeglass 5
It deforms upon and then changes 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 retainer 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 directly over camera lens 1, and 2 bottom of supporting mechanism is fixed on microscope base.Camera lens 1 and protection eyeglass 3 between set by
The deformation eyeglass 5 that driving mechanism 4 drives is equipped with support ring 6 between driving mechanism 4 and deformation eyeglass 5.Retainer ring 7 and camera lens 1 one
Body, 4 one end of driving mechanism are directly anchored to 1 upper surface of camera lens.Retainer ring 7 and 1 integral structure of camera lens, since retainer ring 7 is straight
It connects and is fixed on 1 top of camera lens, therefore the avoiding space even ignored between retainer ring 7 and camera lens 1 can be reduced, reduce camera lens
Component is in the height of optical axis direction.
Further, retainer 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, retainer 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 represents the position that driving mechanism 4 is installed, innermost annulus represents camera lens 1,
Intermediate annulus represents support ring 6, and outmost annulus represents 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, are respectively that 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 adds each driving mechanism
Length, so as 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, squeeze bias layer 41 and warpage occurs, it, can when warpage occurs for bias layer 41 since bias layer 41 is towards support ring 6
Support ring 6 is promoted to move, and extruding is generated to deformation eyeglass 5, so that deformation 5 stress of eyeglass deforms upon, is realized 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 employed.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 control input electricity can be passed through
The size of stream controls the deformation quantity of driving mechanism 4, so as to which deformation eyeglass 5 be driven to occur different degrees of deformation.
After focusing, stop heating, heating layer 42 is waited gradually to cool down, so that driving mechanism 4 can gradually be recovered
To initial position, and support ring 6 is driven to leave deformation eyeglass 5, deformation eyeglass 5 recovers reset condition.
Further, support ring 6 is set to be to be able to make support ring 6 and become between deformation eyeglass 5 and driving mechanism 4
Between shape eyeglass 5 there is the contact area of bigger, prevent driving mechanism 4 from contacting directly deformation eyeglass 5 and can generate unbalance stress, lead
The damaged situation of mutagens shape eyeglass 5.
The present embodiment drives deformation eyeglass to realize auto-focusing with driving mechanism, shortens zoom stroke, eliminates motor
Structure, it is compacter by reducing supporting mechanism lens assembly structure, effectively reduce the shoulder height of camera module and whole body
Product is conducive to the miniaturization of module.
Embodiment 2
The present embodiment in lens assembly using on the basis of 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 heated, and individually control each driving mechanism 4, when camera module is in difference
During state, it can make driving mechanism 4 that different deformation quantities occur, so as 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 the thermal expansion direction of layer 43 is driven to be expanded for lateral expansion to X-direction so that partially
The gap put 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 promoted 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, driving layer 43 and bias layer 41 are arranged at intervals so that driving mechanism 4 can be stuck up to different directions
Song, while driving mechanism 4 is also made when driving deformation eyeglass 5 moves deformation eyeglass 5 can be made to be in a relatively stable position
It puts, 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 moves 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 user experience
Sense.
When module needs autozoom, the heating layer of driving mechanism a and driving mechanism c are heated, make driving machine
Structure a and driving mechanism c generates upward thrust to deformation eyeglass 5, deforms upon deformation eyeglass 5 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 are risen 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 bend 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
Mechanism b and driving mechanism d need not be heated, and driving mechanism b and driving mechanism d can drive 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 heating of motivation structure c, heats 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, makes 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 adds the response speed of drive component focusing while making 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 is 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, it is necessary to will become after driving mechanism a and driving mechanism c driving deformation eyeglasses 5 complete auto-focusing
Shape eyeglass 5 recovers 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 is heated, 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
The phenomenon that local deformation occurs for eyeglass 5 is now deformed, had both helped to improve zoom efficiency, it helps imaging effect during 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 that the phenomenon that heating is uneven occurs, while can improve the flexibility of heating, when driving mechanism quantity is more, also
Software can be set in the controller, according to actual needs the situation of zoom, pointedly selection control is to all driving machines
Structure 4 is heated or part driving mechanism 4 is heated.
When working compared to driving mechanism a and driving mechanism c, not to driving mechanism b and driving mechanism d heat temperature raisings, sheet
Temperature-rising method in embodiment can allow deformation eyeglass to be more rapidly restored to initial position after auto-focusing is completed, 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 set a bias layer 41 towards with
Oneself opposite driving mechanism forms 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 sets driving driving of the layer 43 towards support ring 6
Mechanism A is close to driving mechanism b and sets driving driving mechanism B of the layer 43 towards camera lens 1, is close to driving mechanism c and sets driving
Layer 43 is close to driving mechanism d and sets driving mechanism D of the driving layer 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, sends out deformation eyeglass 5
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, by control of the 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 improved.
Embodiment 5
The present embodiment is using the lens assembly of 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 form an accommodation space, for receiving 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 is compacter by reducing supporting mechanism lens assembly structure.Pass through voice coil compared to traditional
For the camera module of motor driving 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 set in embodiment 5 and embodiment 6, between camera lens 1 and driving mechanism 4 as shown in Figure 1
Retainer ring 7, driving mechanism 4 is fixed in by retainer ring 7 above camera lens, and passes through the fixation of retainer ring 7, is realized opposite
In the warpage of camera lens 1, deformation eyeglass 5 is generated and is squeezed so that deformation eyeglass 5 deforms upon, and realizes auto-focusing.
As shown in Figure 10, it is camera module of the present invention, including lens assembly, wiring board 8, sensitive chip 9 and filter element
10, wiring board 8 is connected by conducting element with the heating layer of driving mechanism in lens assembly, and lens assembly is located at photosensitive 9 chip
Photosensitive path on, filter element 10 between sensitive chip 9 and lens assembly, sensitive chip 9 attach assist side 8 on.
Entire camera module eliminates motor configuration, and lens assembly structure is compacter.Pass through voice coil compared to traditional
For the camera module of motor driving 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 present invention, be not intended to limit the invention, for this
For the technical staff in field, the invention may be variously modified and varied, is made within the spirit and principles of the invention
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (22)
1. a kind of drive component, which is characterized in that by the fixed protection of supporting mechanism including retainer ring and above retainer ring
Eyeglass, the retainer ring are fixed on supporting mechanism, the deformation driven by driving mechanism are set between retainer 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 layer is driven to be heated and is expanded along the bedding angle of driving layer；Driving mechanism one end is consolidated
It is scheduled in retainer ring, the other end is fixed on support ring, and two bias layers are symmetrical arranged between retainer 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 arranged to arc.
5. drive component according to claim 1, which is characterized in that the bias layer be 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 between the driving mechanism of support ring towards setting more than two and for the driving mechanism of even number, and the drive that any two is adjacent
The bias layer of motivation structure is towards on the contrary.
8. drive component according to claim 7, which is characterized in that each driving mechanism closely sets a biasing
The direction driving mechanism opposite with oneself of layer, forms 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 retainer 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 retainer 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 into
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 into
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 exists
In the lens assembly uses the lens assembly described in any claim, the wiring board in claim 10~19 to lead to
The heating layer that conducting element is crossed with driving mechanism in lens assembly is connected.
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483403.6A CN108121046A (en) | 2017-12-29 | 2017-12-29 | A kind of camera module of drive component, lens assembly and its auto-focusing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711483403.6A CN108121046A (en) | 2017-12-29 | 2017-12-29 | A kind of camera module of drive component, lens assembly and its auto-focusing |
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Application publication date: 20180605 |