CN111999846A - Lens driving device - Google Patents
Lens driving device Download PDFInfo
- Publication number
- CN111999846A CN111999846A CN202010868401.4A CN202010868401A CN111999846A CN 111999846 A CN111999846 A CN 111999846A CN 202010868401 A CN202010868401 A CN 202010868401A CN 111999846 A CN111999846 A CN 111999846A
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- China
- Prior art keywords
- lens
- magnetic steel
- ball
- driving
- holder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The present invention provides a lens driving device, including: the lens module, the transmission module and the driving device are accommodated in the accommodating space by the shell; the drive assembly includes a first drive assembly and a second drive assembly. Through all setting up the first magnet steel on the first drive assembly, the second magnet steel on the second drive assembly on the surface of keeping away from drive assembly on the lens support, compare in the traditional structure that sets up first drive assembly and second drive assembly respectively at the top and the bottom of lens subassembly, the drive arrangement of this application has compact structure's advantage.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of optical devices, in particular to a lens driving device.
[ background of the invention ]
A high performance lens module configured in an existing portable terminal generally has an auto-Adjusting Function (AF) and an Optical Image Stabilization (OIS). The optical anti-shake function (OIS) can reduce image blur caused by external vibration or hand shake of a user. In order to realize the automatic adjustment function, the optical anti-shake lens module of the related art must apply a proper current to the AF coil to realize the lifting movement of the lens. In order to supply power to the AF coil outside the lens module, a component such as a suspension wire is necessary. However, it is very difficult to add a suspension wire in the process of stacking and combining many parts in series.
Therefore, it is necessary to provide a lens driving apparatus with a new structure to solve the above problems.
[ summary of the invention ]
The invention aims to provide a lens driving device with a first magnetic steel and a second magnetic steel both positioned on the surface of a lens bracket far away from a transmission assembly.
The technical scheme of the invention is as follows:
a lens driving apparatus, comprising: the lens module comprises a shell with a containing space, a lens module, a transmission module and a driving device, wherein the shell contains the lens module, the transmission module and the driving device in the containing space;
the lens assembly comprises a lens bracket arranged on the shell and a lens supported on the lens bracket;
the transmission assembly is arranged between the lens assembly and the shell and is used for supporting and guiding the lens assembly to move;
the driving device is used for driving the lens assembly to move relative to the shell; the driving device comprises a circuit board connected with the inner wall of the shell, a first driving component for driving the lens component to move along a first direction, and a second driving component for driving the lens component to move along a second direction, wherein the first driving component and the second driving component are respectively connected with the circuit board;
the first driving assembly comprises a first coil fixed on the circuit board and electrically connected with the circuit board, and first magnetic steel fixed on the lens bracket and arranged corresponding to the first coil; the second driving assembly comprises a second coil fixed on the circuit board and electrically connected with the circuit board, and second magnetic steel fixed on the lens bracket and arranged corresponding to the second coil; the first magnetic steel and the second magnetic steel are both arranged on the surface of the lens support far away from the transmission assembly.
As an improvement, a partition wall for separating the first magnetic steel and the second magnetic steel is formed on a side of the lens holder close to the driving assembly in a protruding manner.
As an improvement, the whole symmetrical structure that is of lens holder, including being located the lens installation department at lens holder middle part, and be located a plurality of magnet steel installation departments of lens installation department both sides, first magnet steel with the second magnet steel sets up in turn in the magnet steel installation department, the division wall sets up between the magnet steel installation department.
As an improvement, the transmission assembly comprises a ball support and a base, the lens driving device comprises a return magnetic steel arranged between the base and the lens support, and the return magnetic steel comprises a first return magnetic steel arranged on the base and facing the ball support and a second return magnetic steel arranged on the lens support and facing the ball support; the first return magnetic steel and the second return magnetic steel are oppositely arranged so as to attract each other to mutually press the base, the ball support and the lens support.
As an improvement, one side of the first magnetic steel and/or the second magnetic steel, which is close to the lens holder, is provided with a magnetic conductive plate, and the magnetic conductive plate is used for weakening the interference of the first magnetic steel and/or the second magnetic steel on the return magnetic steel.
As an improvement, the transmission assembly further comprises balls, the balls comprise a first ball, a second ball and a third ball, the transmission assembly comprises a base and a ball support,
the first ball is arranged between the base and the ball support and used for guiding the ball support to drive the lens component to move along a first direction;
the second ball is arranged between the ball support and the lens support and used for guiding the lens assembly to move along a second direction, and the second direction is perpendicular to the first direction;
the third ball is arranged between the base and the lens bracket and used for guiding the lens component to move along the first direction and the second direction relative to the base.
As an improvement, a first guide groove for installing the third ball is arranged on the base, and a second guide groove corresponding to the first guide groove and used for installing the third ball is arranged on the lens support.
As an improvement, the first direction is along the optical axis direction of the lens assembly, the base is further provided with a plurality of first V-shaped grooves for mounting the first balls, and the first V-shaped grooves extend along the optical axis direction; one side of the ball support, which is close to the base, is provided with a third V-shaped groove which is correspondingly arranged with the first V-shaped groove.
As an improvement, be equipped with a plurality of installations on the lens holder the second V type groove of second ball, perpendicular to is followed in second V type groove the optical axis direction extends, the ball holder is close to one side of lens holder be equipped with the fourth V type groove that second V type groove corresponds the setting.
As an improvement, the shell comprises an upper cover plate, a lower cover plate, a first limiting frame and a second limiting frame, wherein the first limiting frame is connected with the second limiting frame; the first limiting frame and the second limiting frame are used for limiting the movement range of the lens assembly along the first direction and the second direction.
The invention has the beneficial effects that: through all setting up the first magnet steel on the first drive assembly, the second magnet steel on the second drive assembly on the surface of keeping away from drive assembly on the lens support, compare in the traditional structure that sets up first drive assembly and second drive assembly respectively at the top and the bottom of lens subassembly, the drive arrangement of this application has compact structure's advantage.
[ description of the drawings ]
FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at I-I of FIG. 1;
FIG. 3 is an exploded view of a portion of the lens driving apparatus of FIG. 1;
FIG. 4 is a bottom view of the circuit board, first coil and second coil of FIG. 3;
FIG. 5 is a schematic view of the lens holder of FIG. 3;
FIG. 6 is a schematic view of the lens holder of FIG. 3 from another perspective;
FIG. 7 is a cross-sectional view taken at II-II of FIG. 1;
FIG. 8 is a bottom view of the ball retainer of FIG. 3;
FIG. 9 is a bottom view of the lens holder of FIG. 3;
fig. 10 is an exploded view of the lens driving apparatus.
In the figure: 1-a shell; 10-a housing space; 101-inner wall; 102-a bottom wall; 103-a top wall; 11-an upper cover plate; 12-a lower cover plate; 13-a first limit frame; 14-a second limit frame; 2-a lens assembly; 21-a lens holder; 211-a second guide slot; 212-second V-shaped groove; 213-lens mount; 214-a magnetic steel mounting part; 22-lens; 23-restoring magnetic steel; 231-first recovery magnetic steel; 232-second return magnetic steel; 3-a transmission assembly; 31-a ball support; 311-third V-shaped groove; 312-fourth V-groove; 32-a base; 321-a first guide groove; 322-first V-groove; 4-a drive device; 41-a circuit board; 42-a first drive assembly; 421-a first coil; 422-first magnetic steel; 43-a second drive assembly; 431-a second coil; 432-second magnetic steel; 44-partition walls; 45-magnetic conductive plate. 5-rolling balls; 51-a first ball; 52-a second ball; 53-third ball.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 10, the lens driving apparatus includes a housing 1 having an accommodating space 10, a lens assembly 2, a transmission assembly 3, and a driving apparatus 4, wherein the housing 1 accommodates the lens assembly 2, the transmission assembly 3, and the driving apparatus 4 in the accommodating space 10 and protects components therein.
As shown in fig. 2 and 10, the housing 1 includes an upper cover plate 11, a lower cover plate 12, a first limit frame 13 and a second limit frame 14, the first limit frame 13 is connected to the second limit frame 14, the upper cover plate 11 is covered on the first limit frame 13 and the second limit frame 14, the lower cover plate 12 is covered on the first limit frame 13 and the second limit frame 14 and is arranged opposite to the upper cover plate 11 at an interval, and the upper cover plate 11, the lower cover plate 12, the first limit frame 13 and the second limit frame 14 enclose the accommodating space 10 of the housing 1. The first limit frame 13 and the second limit frame 14 are used for limiting the movement range of the lens assembly 2 along the first direction and the second direction. Specifically, the first limit frame 13 and the second limit frame 14 enclose an inner wall 101 forming the accommodating space 10, the upper cover plate 11 has a top wall 103 facing the accommodating space 10, and the lower cover plate 12 has a bottom wall 102 facing the accommodating space 10.
The lens assembly 2 includes a lens holder 21 mounted to the inner wall 101 of the housing 1 and a lens 22 supported by the lens holder 21. The transmission assembly 3 is disposed between the lens assembly 2 and the bottom wall 102 of the housing 1 for supporting and guiding the movement of the lens assembly 2. The driving device 4 is disposed between the lens assembly 2 and a top wall 103 of the housing 1 for driving the lens assembly 2 to move relative to the housing 1. Specifically, the driving device 4 includes a circuit board 41 connected to an inner wall 101 of the housing 1, a first driving component 42 for driving the lens assembly 2 to move along a first direction, and a second driving component 43 for driving the lens assembly 2 to move along a second direction, the first driving component 42 and the second driving component 43 are respectively electrically connected to the circuit board 41, the circuit board 41 drives the first driving component 42 and the second driving component 43 to respectively generate a lorentz force to push the lens assembly 2 to move, wherein the inner wall 101 is a wall facing the accommodating space, the first direction is a direction parallel to an optical axis of the lens assembly 2, and the second direction is a direction perpendicular to the first direction. The first driving assembly 42 includes a first coil 421 fixed on the circuit board 41 and electrically connected to the circuit board 41, and a first magnetic steel 422 fixed on the lens holder 21 and corresponding to the first coil 421; the second driving assembly 43 includes a second coil 431 fixed to the circuit board 41 and electrically connected to the circuit board 41, and a second magnetic steel 432 fixed to the lens holder 21 and disposed corresponding to the second coil 431; first magnet steel 422 and second magnet steel 432 are both arranged on the surface of lens support 21 far away from transmission assembly 3, and compared with the existing structure that first magnet steel 422 and second magnet steel 432 are respectively arranged at the bottom and the top of the lens assembly, the structure of the lens driving device is more compact and smaller.
Preferably, a partition wall 44 for partitioning the first driving assembly 42 and the second driving assembly 43 is formed on the lens holder 21 protruding from a side close to the driving assembly 3, so as to weaken mutual interference between the first driving assembly 42 and the second driving assembly 43 during operation and ensure reliability of movement of the lens assembly 2 in the first direction and the second direction.
Preferably, the lens holder 21 is a symmetrical structure, and includes a lens mounting portion 213 located in the middle of the lens holder 21 and a plurality of magnetic steel mounting portions 214 located on two sides of the lens mounting portion 213, the first magnetic steel 422 and the second magnetic steel 432 are alternately disposed in the magnetic steel mounting portions 214, and the partition wall 44 is disposed between the magnetic steel mounting portions 214.
Preferably, the first driving assembly 42 includes a first coil 421 fixed on the circuit board 41 and electrically connected to the circuit board 41, and a first magnetic steel 422 fixed on the lens holder 21 and disposed corresponding to the first coil 421, where the circuit board 41 applies current to the first coil 421, and generates a lorentz force under the action of the first magnetic steel 422 to push the lens assembly 2 to move along the first direction; the second driving assembly 43 includes a second coil 431 fixed to the circuit board 41 and electrically connected to the circuit board 41, and a second magnetic steel 432 fixed to the lens holder 21 and disposed corresponding to the second coil 431, wherein the circuit board 41 supplies current to the second coil 431 to generate a lorentz force under the action of the second magnetic steel 432, so as to push the lens assembly 2 to move along the second direction.
Preferably, the first magnetic steel 422 is symmetrically disposed at two sides of the second magnetic steel 432, and the first magnetic steel 422 and the second magnetic steel 432 are integrally symmetrically disposed at two sides of the lens 22, so that the lens component 2 is uniformly stressed.
Preferably, the transmission assembly 3 of the lens driving device includes a ball holder 31 and a base 32, the lens driving device further includes a restoring magnetic steel 23 disposed between the base 32 and the lens holder 21, and referring to fig. 3 and 6 together, the restoring magnetic steel 23 includes a first restoring magnetic steel 231 disposed on the base 32 and facing the ball holder 31, and a second restoring magnetic steel 232 disposed on the lens holder 21 and facing the ball holder 31; first answer magnet steel 231 and the relative setting of second answer magnet steel 232, reply the mutual appeal between magnet steel 231 and the second and compress tightly base 32, ball support 31 and lens holder 21 each other through first answer magnet steel 231, the quick assembly disassembly operation between the three of ball support 31 and the lens holder 21 of being convenient for.
Preferably, one side of the first magnetic steel 422 close to the lens holder 21 is provided with a magnetic conductive plate 45, and the magnetic conductive plate 45 is used for weakening the interference of the first magnetic steel 422 on the recovery magnetic steel 23 arranged on the back surface of the first magnetic steel 422, so that the first magnetic steel 422 and the recovery magnetic steel 23 can work relatively independently to a certain extent. Certainly, a magnetic conduction plate 45 may be further disposed on one side of the second magnetic steel 432 close to the lens holder 21, so as to weaken the interference of the second magnetic steel 432 on the return magnetic steel 23.
Preferably, the lens module further comprises a ball 5, the ball 5 comprises a first ball 51, a second ball 52 and a third ball 53, the transmission assembly 3 comprises a ball support 31 and a base 32, and the first ball 51 is arranged between the base 32 and the ball support 31 and used for guiding the ball support 31 to move the lens module 2 along the first direction; the second ball 52 is disposed between the ball holder 31 and the lens holder 21 for guiding the lens assembly 2 to move along a second direction, wherein the first direction is an optical axis direction of the lens assembly 2, and the second direction is perpendicular to the first direction; the third ball 53 is disposed between the base 32 and the lens holder 21, and is used for guiding the movement of the lens assembly 2 relative to the base 32 in the first direction and the second direction.
Preferably, the base 32 is further provided with a first guide groove 321 for mounting the third ball 53, the lens holder 21 is provided with a second guide groove 211 corresponding to the first guide groove 321 for mounting the third ball 53, and the base 32 and the lens holder 21 are slidably connected by mutual compression joint among the first guide groove 321, the third ball 53 and the second guide groove 211.
Preferably, the first direction is an optical axis direction of the lens assembly 2, the base 32 is further provided with a plurality of first V-shaped grooves 322 for mounting the first balls 51, and the first V-shaped grooves 322 extend along the optical axis direction; one side of the ball support 31 close to the base 32 is provided with a third V-shaped groove 311 correspondingly arranged with the first V-shaped groove 322, and the base 32 and the ball support 31 are connected in a sliding manner by mutual compression joint among the first V-shaped groove 322, the first ball 51 and the third V-shaped groove 311.
Preferably, a plurality of second V-shaped grooves 212 for mounting the second balls 52 are formed in the lens holder 21, the second V-shaped grooves 212 extend in a direction perpendicular to the optical axis, a fourth V-shaped groove 312 corresponding to the second V-shaped grooves 212 is formed in one side of the lens holder 31 close to the lens holder 21, and the lens holder 21 and the ball holder 31 are slidably connected by mutual compression joint among the second V-shaped grooves 212, the second balls 52 and the fourth V-shaped grooves 312.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A lens driving apparatus, comprising: the lens module comprises a shell with a containing space, a lens module, a transmission module and a driving device, wherein the shell contains the lens module, the transmission module and the driving device in the containing space;
the lens assembly comprises a lens bracket arranged on the shell and a lens supported on the lens bracket;
the transmission assembly is arranged between the lens assembly and the shell and is used for supporting and guiding the lens assembly to move;
the driving device is used for driving the lens assembly to move relative to the shell; the driving device comprises a circuit board connected with the inner wall of the shell, a first driving component for driving the lens component to move along a first direction, and a second driving component for driving the lens component to move along a second direction, wherein the first driving component and the second driving component are respectively connected with the circuit board;
the first driving assembly comprises a first coil fixed on the circuit board and electrically connected with the circuit board, and first magnetic steel fixed on the lens bracket and arranged corresponding to the first coil; the second driving assembly comprises a second coil fixed on the circuit board and electrically connected with the circuit board, and second magnetic steel fixed on the lens bracket and arranged corresponding to the second coil; the first magnetic steel and the second magnetic steel are both arranged on the surface of the lens support far away from the transmission assembly.
2. The lens driving apparatus according to claim 1, wherein a partition wall for partitioning the first magnetic steel and the second magnetic steel is formed on a side of the lens holder adjacent to the driving unit.
3. The lens driving device according to claim 2, wherein the lens holder is a symmetrical structure including a lens mounting portion located in a middle portion of the lens holder and a plurality of magnetic steel mounting portions located on both sides of the lens mounting portion, the first magnetic steel and the second magnetic steel are alternately disposed in the magnetic steel mounting portions, and the partition wall is disposed between the magnetic steel mounting portions.
4. The lens driving apparatus as claimed in claim 1, wherein the transmission assembly comprises a ball holder and a base, the lens driving apparatus comprises a return magnetic steel disposed between the base and the lens holder, the return magnetic steel comprises a first return magnetic steel disposed on the base and facing the ball holder, and a second return magnetic steel disposed on the lens holder and facing the ball holder; the first return magnetic steel and the second return magnetic steel are oppositely arranged so as to attract each other to mutually press the base, the ball support and the lens support.
5. The lens driving apparatus according to claim 4, wherein a magnetic conductive plate is disposed on a side of the first magnetic steel and/or the second magnetic steel close to the lens holder, and the magnetic conductive plate is used to reduce interference of the first magnetic steel and/or the second magnetic steel with the return magnetic steel.
6. The lens driving apparatus according to claim 1, further comprising balls including a first ball, a second ball and a third ball, the transmission assembly including a base and a ball holder,
the first ball is arranged between the base and the ball support and used for guiding the ball support to drive the lens component to move along a first direction;
the second ball is arranged between the ball support and the lens support and used for guiding the lens assembly to move along a second direction, and the second direction is perpendicular to the first direction;
the third ball is arranged between the base and the lens bracket and used for guiding the lens component to move along the first direction and the second direction relative to the base.
7. The lens driving apparatus as claimed in claim 6, wherein the base has a first guide groove for receiving the third ball, and the lens holder has a second guide groove corresponding to the first guide groove for receiving the third ball.
8. The lens driving apparatus as claimed in claim 7, wherein the first direction is along an optical axis of the lens assembly, and the base further has a plurality of first V-grooves for receiving the first balls, the first V-grooves extending along the optical axis; one side of the ball support, which is close to the base, is provided with a third V-shaped groove which is correspondingly arranged with the first V-shaped groove.
9. The lens driving apparatus as claimed in claim 8, wherein the lens holder has a plurality of second V-shaped grooves for receiving the second balls, the second V-shaped grooves extend in a direction perpendicular to the optical axis, and a fourth V-shaped groove corresponding to the second V-shaped grooves is formed on a side of the ball holder adjacent to the lens holder.
10. The lens driving device according to claim 9, wherein the housing includes an upper cover plate, a lower cover plate, a first limit frame, and a second limit frame, the first limit frame is connected to the second limit frame, the upper cover plate is covered on the first limit frame and the second limit frame, and the lower cover plate is covered on the first limit frame and the second limit frame; the first limiting frame and the second limiting frame are used for limiting the movement range of the lens assembly along the first direction and the second direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868401.4A CN111999846A (en) | 2020-08-26 | 2020-08-26 | Lens driving device |
| PCT/CN2020/113527 WO2022041310A1 (en) | 2020-08-26 | 2020-09-04 | Lens driving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868401.4A CN111999846A (en) | 2020-08-26 | 2020-08-26 | Lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111999846A true CN111999846A (en) | 2020-11-27 |
Family
ID=73470874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010868401.4A Pending CN111999846A (en) | 2020-08-26 | 2020-08-26 | Lens driving device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111999846A (en) |
| WO (1) | WO2022041310A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041310A1 (en) * | 2020-08-26 | 2022-03-03 | 诚瑞光学(常州)股份有限公司 | Lens driving apparatus |
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| CN107924064A (en) * | 2016-07-07 | 2018-04-17 | 核心光电有限公司 | Linear ball for folding optics guides voice coil motor |
| CN107979259A (en) * | 2018-01-12 | 2018-05-01 | 河南省皓泽电子有限公司 | A kind of memory alloy driven micromachine |
| CN110139013A (en) * | 2019-06-01 | 2019-08-16 | 瑞声科技(新加坡)有限公司 | Camera module and periscopic camera |
| CN110703538A (en) * | 2019-10-15 | 2020-01-17 | 瑞声通讯科技(常州)有限公司 | Lens module |
| US20200150380A1 (en) * | 2016-12-08 | 2020-05-14 | Samsung Electronics Co., Ltd. | Camera device including aperture and electronic device including the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020071273A (en) * | 2018-10-29 | 2020-05-07 | ソニーセミコンダクタソリューションズ株式会社 | Image capturing device |
| CN210381049U (en) * | 2019-09-12 | 2020-04-21 | 格科微电子（上海）有限公司 | Camera module |
| CN111338048B (en) * | 2020-05-18 | 2020-09-01 | 昆山联滔电子有限公司 | Lens pushing device |
| CN111999846A (en) * | 2020-08-26 | 2020-11-27 | 诚瑞光学(常州)股份有限公司 | Lens driving device |
-
2020
- 2020-08-26 CN CN202010868401.4A patent/CN111999846A/en active Pending
- 2020-09-04 WO PCT/CN2020/113527 patent/WO2022041310A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107924064A (en) * | 2016-07-07 | 2018-04-17 | 核心光电有限公司 | Linear ball for folding optics guides voice coil motor |
| US20200150380A1 (en) * | 2016-12-08 | 2020-05-14 | Samsung Electronics Co., Ltd. | Camera device including aperture and electronic device including the same |
| CN107979259A (en) * | 2018-01-12 | 2018-05-01 | 河南省皓泽电子有限公司 | A kind of memory alloy driven micromachine |
| CN110139013A (en) * | 2019-06-01 | 2019-08-16 | 瑞声科技(新加坡)有限公司 | Camera module and periscopic camera |
| CN110703538A (en) * | 2019-10-15 | 2020-01-17 | 瑞声通讯科技(常州)有限公司 | Lens module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041310A1 (en) * | 2020-08-26 | 2022-03-03 | 诚瑞光学(常州)股份有限公司 | Lens driving apparatus |
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| Publication number | Publication date |
|---|---|
| WO2022041310A1 (en) | 2022-03-03 |
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Application publication date: 20201127 |