CN208921950U - A kind of lens driving structure and camera module - Google Patents
A kind of lens driving structure and camera module Download PDFInfo
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- CN208921950U CN208921950U CN201821729224.6U CN201821729224U CN208921950U CN 208921950 U CN208921950 U CN 208921950U CN 201821729224 U CN201821729224 U CN 201821729224U CN 208921950 U CN208921950 U CN 208921950U
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- lower cover
- lens
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Abstract
The utility model embodiment provides a kind of lens driving structure, and the camera lens including accommodating camera lens carries seat and lower cover；The camera lens, which carries, has Piezoelectric Driving component between seat and lower cover, the Piezoelectric Driving component and lower cover contact position have fixing end, and it is free end that the Piezoelectric Driving component and camera lens, which carry seated connection synapsis,；The Piezoelectric Driving component is the multiple piezoelectric patches being distributed between camera lens load seat and lower cover, and the piezoelectric patches is carried in camera lens and is evenly distributed between seat and lower cover；Second state of warpage when there is the piezoelectric patches first state and piezoelectric patches to be electrically connected with external electrical field.The utility model embodiment additionally provides a kind of camera module, including camera lens and foregoing lens driving structure.The utility model, instead of the structure of traditional voice coil motor coil and magnet, carries seat using piezoelectric effect driving camera lens and realizes the linear motion of camera lens, to reduce the packaging technology step of camera module driving structure, reduce production cost using Piezoelectric Driving component.
Description
Technical field
The utility model relates to the lens driving technical field of camera module, particularly a kind of lens driving structure and
Camera module.
Background technique
As the driving structure of traditional camera module, the camera module being especially applied in intelligent electronic device such as mobile phone
Driving structure, generally driven using voice coil motor VCM, traditional voice coil motor generallys use magnet assembly and mutually tie with coil
The driving structure of conjunction.Since the structure of voice coil motor becomes small, can coiling space also just it is smaller, it is possible to will lead to drive
It is short of power.Furthermore in the camera module of twin-lens, easily there is the problems such as magnetic disturbance.
Utility model content
The purpose of the utility model embodiment is in view of the above problems, providing a kind of lens driving structure and camera shooting mould
Group.
The utility model embodiment provides a kind of lens driving structure, the camera lens load seat including accommodating camera lens, and under
Lid；The camera lens, which carries, has Piezoelectric Driving component between seat and lower cover.The Piezoelectric Driving component and lower cover contact position have solid
It is free end that fixed end, the Piezoelectric Driving component and camera lens, which carry seated connection synapsis,.Piezoelectric Driving component makes electric field after accessing electric field
Electric energy be converted into mechanical energy, i.e. inverse piezoelectric effect, thus for camera lens carry seat driving force.The utility model utilizes piezoelectric drive groups
Part carries the straight line that seat realizes camera lens using piezoelectric effect driving camera lens instead of the structure of traditional voice coil motor coil and magnet
Movement reduces production cost to reduce the packaging technology step of camera module driving structure.And lens driving structure does not need
Lower elastic slice, Piezoelectric Driving component carry seat for camera lens and provide the driving force of support and linear motion.
Drive mechanism is the multiple piezoelectric patches being distributed between camera lens load seat and lower cover, and piezoelectric patches carries seat in camera lens
It is evenly distributed between lower cover.Warpage when there is the piezoelectric patches first state and piezoelectric patches to be electrically connected with external electrical field
Second state.When by electric field action, piezoelectric patches becomes the second state, piezoelectric patches warpage from first state, and piezoelectric patches is consolidated
Fixed end is fixed at lower cover, and free end is subjected to displacement with the buckling deformation of piezoelectric patches, so that carrying seat 1 for camera lens provides driving
Power.Piezoelectric patches is similar to a lever in this way, if only one individual whole piezoelectric patches, drives required for independent piezoelectric patches
Power is larger, and it is difficult to ensure that camera lens carries seat by the balanced driving force for carrying the seat direction of motion along camera lens when deformation.By setting
Multiple piezoelectric patches are set, and piezoelectric patches is evenly distributed, driving force provided by multiple piezoelectric patches is larger, it can be ensured that camera lens carries seat
Rated travel.Meanwhile equally distributed piezoelectric patches carries seat for camera lens and provides balanced driving force.
Further, the piezoelectric patches is strip.
Further, the piezoelectric patches is sheet.Change obtained when strip and the piezoelectric patches of sheet are by electric field action
The block-like piezoelectric patches of shape Amplitude Ratio is bigger.
Further, the piezoelectric patches has a first end and a second end, and the first end is fixedly connected with lower cover, institute
It states second end and camera lens carries seated connection touching and second end is free end.
Further, the second state after there is the piezoelectric patches first state and piezoelectric patches to be electrically connected with external electrical field,
The piezoelectric patches in the second state, the amplitude of variation of second end in height after the piezoelectric patches buckling deformation is 0.25 ~
0.3mm。
As a preferred option, the quantity of the piezoelectric patches is more than or equal to 3, and piezoelectric patches carries between seat and lower cover in camera lens
It is evenly distributed.Multiple equally distributed piezoelectric patches carry seat for camera lens and provide balanced driving force.
Further, the lower cover has bottom plate, has through-hole among the bottom plate, and through hole tool is closed on the bottom plate
There is convex bone protruding upward, the side wall of the convex bone is the limit plate of piezoelectric patches；The piezoelectric patches is fixedly connected with bottom plate.
Further, the through-hole is circle, and the shape of the piezoelectric patches is arc and matches with the sidewall shape of convex bone.
Further, the piezoelectric patches is made of high resiliency substrate and piezoelectric thick.
The utility model embodiment additionally provides a kind of camera module, including camera lens and foregoing lens driving knot
Structure.
Compared with prior art, the beneficial effects of the utility model are as follows:
A kind of lens driving structure provided by the utility model and camera module, using Piezoelectric Driving component instead of tradition
Voice coil motor coil and magnet structure, using piezoelectric effect driving camera lens carry seat realize camera lens linear motion, to subtract
The packaging technology step of few camera module driving structure, reduces production cost.And lens driving structure does not need lower elastic slice, piezoelectricity
Driving assembly carries seat for camera lens and provides the driving force of support and linear motion.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of cross-sectional view of lens driving structure provided by the utility model embodiment；
Fig. 2 is a kind of structural representation of the lower cover, piezoelectric patches of lens driving structure provided by the utility model embodiment
Figure；
Fig. 3 is that the camera lens in Fig. 1 at A carries the schematic diagram of seat, lower cover, Piezoelectric Driving component three in first state；
Fig. 4 is that the camera lens in Fig. 1 at A carries the schematic diagram of seat, lower cover, Piezoelectric Driving component three in the second state；
Fig. 5 is a kind of explosive view of camera module of the utility model embodiment.
Appended drawing reference:
1- camera lens carries seat, 2- lower cover, 21- bottom plate, the convex bone of 22-, 23- through-hole, 221- side wall, 3- Piezoelectric Driving component, 31-
Piezoelectric patches, 311- first end, 312- second end.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
With reference to the accompanying drawings and examples, the structurally and functionally principle of the utility model is described further:
Embodiment one
As shown in Figure 1, the utility model embodiment provides a kind of lens driving structure, the camera lens including accommodating camera lens is carried
Seat 1 and lower cover 2；The camera lens, which carries, has Piezoelectric Driving component 3 between seat 1 and lower cover 3.Piezoelectric Driving component 3, under
2 contact position of lid has fixing end, and it is free end that the Piezoelectric Driving component and camera lens, which carry seated connection synapsis,.
Piezoelectric Driving component 3 is, for example, piezoelectric patches 31, is made of high resiliency substrate and piezoelectric thick.High resiliency substrate can be with
It is made by beallon thin slice or macromolecule compounded nitrile rubber class material.Piezoelectric thick for example when PZT piezoelectric thick, be
On high resiliency substrate chemically repeatedly spraying plating lead zirconate titanate chemical material and it is manufactured.
As a preferred option, as shown in Fig. 2, drive mechanism 3 is to be distributed in camera lens to carry between seat 1 and lower cover 2
Multiple piezoelectric patches 31, and piezoelectric patches 31 is carried in camera lens and is evenly distributed between seat 1 and lower cover 2.The utility model is driven using piezoelectricity
Dynamic component 3 carries seat 1 using piezoelectric effect driving camera lens and realizes camera lens instead of the structure of traditional voice coil motor coil and magnet
Linear motion reduce production cost to reduce the packaging technology step of camera module driving structure.And lens driving structure
Lower elastic slice is not needed, Piezoelectric Driving component 3 is that camera lens load seat 1 provides the driving force of support and linear motion.
Piezoelectric patches 31 has two states, when the first state of piezoelectric patches 31 is that piezoelectric patches 31 is not electrically connected with external electrical field
State, as shown in Figure 3.Second state of piezoelectric patches 31 is the state of warpage after piezoelectric patches 31 is electrically connected with external electrical field, such as
Shown in Fig. 4.
After accessing electric field, piezoelectric patches becomes the second state from first state, and piezoelectric patches 31 is by electric field action Shi Huifa
Raw warpage, makes the electric energy of electric field be converted into mechanical energy, i.e. inverse piezoelectric effect.The fixing end of piezoelectric patches 31 is fixed at lower cover 2,
The free end of piezoelectric patches 31 is subjected to displacement with the buckling deformation of piezoelectric patches 31, so that carrying seat 1 for camera lens provides driving force.
As a preferably scheme, the piezoelectric patches is strip, and when by electric field action, the piezoelectric patches of strip occurs
Buckling deformation.Strip can be straight bar shaped, be also possible to the bar shaped etc. of arc, this is not restricted.
As another preferred scheme, the piezoelectric patches is sheet, and when by electric field action, the piezoelectric patches of sheet is sent out
Raw buckling deformation.When the shape of piezoelectric patches is blocky, the piezoelectricity not as good as strip and sheet is deformed when by electric field action
Piece amplitude of deformation obtained is bigger.
Specifically, one of embodiment is, piezoelectric patches is 4.It is understood that multiple piezoelectric patches, finger pressure electricity
The quantity of piece is more than or equal to 2.When by electric field action, 31 warpage of piezoelectric patches, free end can change, and piezoelectric patches is similar to one
Lever.If only one individual whole piezoelectric patches, driving force required for independent piezoelectric patches is larger, and is difficult to protect when deformation
It demonstrate,proves camera lens and carries seat by the balanced driving force for carrying the seat direction of motion along camera lens.By the way that multiple piezoelectric patches 31, and piezoelectric patches is arranged
31 are evenly distributed, and driving force provided by multiple piezoelectric patches 31 is larger, it can be ensured that the rated travel of camera lens load seat 1.Meanwhile
Equally distributed piezoelectric patches 31 is that camera lens load seat 1 provides balanced driving force.Being uniformly distributed, which for example can be, is symmetrically distributed,
Or the distribution of array, the effect of distribution are to obtain the balance of linearly driving force.
As a preferred option, the quantity of the piezoelectric patches 31 is more than or equal to 3, and piezoelectric patches 31 carries seat and lower cover in camera lens
Between be evenly distributed.
Preferably, second end 312 change in height of the piezoelectric patches 31 in the second state, after 31 buckling deformation of piezoelectric patches
Change amplitude is 0.25 ~ 0.3mm.
As shown in figure 4, each piezoelectric patches 31 has first end 311 and second end 312.First end 311 and lower cover 2 carry out
It is fixedly connected, such as first end 311 is fixed with lower cover 2 by dispensing.Second end 312 carries seat 1 with camera lens and contacts, but second end
312 be free end, does not fix and connect between camera lens load seat 1, after piezoelectric patches 31 deforms, 31 second end 312 of piezoelectric patches hair
It is raw to be displaced and the camera lens above piezoelectric patches 31 is driven to carry the linear motion of seat 1.
Piezoelectric patches 31 is not shown in the figure, is attached with external electrical field by two connecting pins (PIN).
As shown in Fig. 2, having bottom plate 21 on lower cover 2, bottom plate 21 is that piezoelectric patches 31 provides support, and the first of piezoelectric patches 31
End 311 is fixedly connected with bottom plate 21.There is through-hole 23 among bottom plate 21, closed on bottom plate 21 at through-hole 23 with protruding upward
Convex bone 22, the side wall 221 of convex bone 22 are the limit plate of piezoelectric patches 31, provide limit for piezoelectric patches 31.
Further, the shape of piezoelectric patches is matched with the sidewall shape of convex bone.
Further, through-hole is circle, and the shape of the piezoelectric patches is arc and matches with the sidewall shape of convex bone.
Embodiment two
The utility model embodiment additionally provides a kind of camera module, as shown in figure 5, including camera lens and mirror as described above
Head driving structure.As it will be appreciated by persons skilled in the art that camera module further comprises upper cover 4, picture processing chip
Deng therefore not to repeat here.
Compared with prior art, the beneficial effects of the utility model are as follows:
A kind of lens driving structure provided by the utility model and camera module, using Piezoelectric Driving component instead of tradition
Voice coil motor coil and magnet structure, using piezoelectric effect driving camera lens carry seat realize camera lens linear motion, to subtract
The packaging technology step of few camera module driving structure, reduces production cost.And lens driving structure does not need lower elastic slice, piezoelectricity
Driving assembly carries seat for camera lens and provides the driving force of support and linear motion.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of lens driving structure, the camera lens including accommodating camera lens carries seat and lower cover；It is characterized in that, the camera lens carries
There is Piezoelectric Driving component, the Piezoelectric Driving component and lower cover contact position have fixing end, the piezoelectricity between seat and lower cover
It is free end that driving assembly and camera lens, which carry seated connection synapsis,；The Piezoelectric Driving component is to be distributed in camera lens to carry between seat and lower cover
Multiple piezoelectric patches, the piezoelectric patches are carried in camera lens and are evenly distributed between seat and lower cover；The piezoelectric patches has first state, and
Second state of warpage when piezoelectric patches is electrically connected with external electrical field.
2. lens driving structure according to claim 1, which is characterized in that the piezoelectric patches is strip.
3. lens driving structure according to claim 1, which is characterized in that the piezoelectric patches is sheet.
4. lens driving structure according to claim 1, which is characterized in that the piezoelectric patches has first end and second
End, the first end are fixedly connected with lower cover, and the second end and camera lens load seated connection touching and second end are free end.
5. lens driving structure according to claim 4, which is characterized in that the piezoelectric patches is described in the second state
The amplitude of variation of the second end of piezoelectric patches in height is 0.25 ~ 0.3mm.
6. lens driving structure according to claim 1, which is characterized in that the quantity of the piezoelectric patches is more than or equal to 3.
7. lens driving structure according to claim 1, which is characterized in that the lower cover has bottom plate, in the bottom plate
Between there is through-hole, through hole is closed on the bottom plate with convex bone protruding upward, the side wall of the convex bone is the limit of piezoelectric patches
Position plate；The piezoelectric patches is fixedly connected with bottom plate.
8. lens driving structure according to claim 7, which is characterized in that the through-hole is circle, the piezoelectric patches
Shape is arc and matches with the sidewall shape of convex bone.
9. lens driving structure according to claim 1, which is characterized in that the piezoelectric patches is by high resiliency substrate and piezoelectricity
Thick film composition.
10. a kind of camera module, which is characterized in that including camera lens and such as the described in any item lens driving knots of claim 1 ~ 9
Structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821729224.6U CN208921950U (en) | 2018-10-24 | 2018-10-24 | A kind of lens driving structure and camera module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729224.6U CN208921950U (en) | 2018-10-24 | 2018-10-24 | A kind of lens driving structure and camera module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111399164A (en) * | 2020-03-27 | 2020-07-10 | 睿恩光电有限责任公司 | Piezoelectric sheet type focusing device, camera device, and electronic apparatus |
| CN112311977A (en) * | 2019-07-26 | 2021-02-02 | 中芯集成电路（宁波）有限公司 | Imaging module, forming method thereof and lens assembly |
| CN112351158A (en) * | 2019-08-06 | 2021-02-09 | 中芯集成电路（宁波）有限公司 | Imaging module, forming method thereof and lens assembly |
| WO2022000540A1 (en) * | 2020-06-30 | 2022-01-06 | 诚瑞光学(常州)股份有限公司 | Lens module |
| CN114727003A (en) * | 2021-01-05 | 2022-07-08 | 北京小米移动软件有限公司 | Camera module, terminal equipment and anti-shake method of camera |
-
2018
- 2018-10-24 CN CN201821729224.6U patent/CN208921950U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112311977A (en) * | 2019-07-26 | 2021-02-02 | 中芯集成电路（宁波）有限公司 | Imaging module, forming method thereof and lens assembly |
| CN112351158A (en) * | 2019-08-06 | 2021-02-09 | 中芯集成电路（宁波）有限公司 | Imaging module, forming method thereof and lens assembly |
| CN112351158B (en) * | 2019-08-06 | 2022-12-09 | 中芯集成电路（宁波）有限公司 | Imaging module, forming method thereof and lens assembly |
| CN111399164A (en) * | 2020-03-27 | 2020-07-10 | 睿恩光电有限责任公司 | Piezoelectric sheet type focusing device, camera device, and electronic apparatus |
| WO2022000540A1 (en) * | 2020-06-30 | 2022-01-06 | 诚瑞光学(常州)股份有限公司 | Lens module |
| CN114727003A (en) * | 2021-01-05 | 2022-07-08 | 北京小米移动软件有限公司 | Camera module, terminal equipment and anti-shake method of camera |
| CN114727003B (en) * | 2021-01-05 | 2023-11-24 | 北京小米移动软件有限公司 | Camera module, terminal equipment and camera anti-shake method |
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