CN218158491U - Lens group driving device and automatic focusing lens - Google Patents
Lens group driving device and automatic focusing lens Download PDFInfo
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- CN218158491U CN218158491U CN202222712058.1U CN202222712058U CN218158491U CN 218158491 U CN218158491 U CN 218158491U CN 202222712058 U CN202222712058 U CN 202222712058U CN 218158491 U CN218158491 U CN 218158491U
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Abstract
The utility model discloses a battery of lens drive arrangement and auto focus camera lens, include: the driving coil is fixedly connected with the lens group; the driving coil penetrates through the closed magnetic ring to form a cross structure; the at least two guide rods are used for limiting the moving direction of the lens group, and any guide rod is parallel to the optical axis of the lens group; the driving coil drives the lens group to be movable along the guide rod in the energized state. When the driving coil is electrified and drives the lens group, the driving coil does not contact with the closed magnetic ring, so that noise caused by friction or vibration is reduced, and noise generated during zooming or focusing is reduced. Compare step motor and lead to the focusing speed slow scheduling problem that noise and step motor drive frequency limit lead to because of self high frequency vibrations, utilize the interact power between the magnetic field that drive coil and closed magnetic ring produced in this application, promote the drive coil and produce in the motion of closed magnetic ring contactless, can effectively avoid the noise and promote the speed of focusing.
Description
Technical Field
The utility model relates to an optical imaging device especially relates to a battery of lens drive arrangement and auto focus camera lens.
Background
In recent years, because of the influence factor of epidemic situation, video equipment uses more and more generally in human life, along with imaging chip technique, image processing, the development of network transmission technique, video conference equipment, the net broadcast, education recorded broadcast equipment is also higher and higher to the requirement of formation of image, because the object of shooing is mainly the personage, and need the pronunciation to record, consequently direct requirement camera lens is gradually towards high pixel, big light ring, quick focusing and low noise development, in order to satisfy this trend, also further require performances such as quick accurate focus and low noise to the focus structure of the optical lens of carrying on products such as video conference equipment, live broadcast equipment, education recorded broadcast equipment.
In a traditional optical lens automatic focusing mode, a screw rod connection guide structure of a stepping motor is generally adopted to drive a lens to realize linear motion, and the automatic focusing transmission function is realized; the position detection function is realized by adopting the optical coupling element, although the mode has simple design, the stepping motor has larger vibration when actuated, thereby generating unavoidable noise; the stepping motor drives the automatic focusing structure, the inherent transmission back clearance of the motor and the inherent step-out phenomenon of the stepping motor exist, the focusing precision is influenced, the focusing speed of the stepping motor cannot be further improved due to the inherent driving frequency of the stepping motor, and in addition, the response speed of the optical coupler also influences the focusing speed.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a lens group drive arrangement and automatic focusing lens, this kind of lens group drive arrangement and automatic focusing lens can reduce the noise of focusing production and promote the speed of focusing.
An object of the utility model is to provide a lens group drive arrangement, include: the driving coil is fixedly connected with the lens group; the driving coil penetrates through the closed magnetic ring to form a cross structure; the guide rods are arranged on two sides of the lens group in parallel with the optical axis of the lens group respectively and used for limiting the moving direction of the lens group; the driving coil drives the lens group to be movable along the guide rod in the electrified state.
In some embodiments, the lens group driving device is provided with a precision device, the precision device further comprising: the array magnetic stripe is fixed on the lens group; and the giant magneto-resistance sensor is used for detecting the position change of the array magnetic stripe.
In some embodiments, the closed magnetic ring comprises: the opening direction of the two U-shaped iron plates is opposite to the buckling direction, a limiting rod used for limiting the driving coil is arranged between the two U-shaped iron plates, and the two U-shaped iron plates and the limiting rod form a Chinese character 'ri';
and the two permanent magnets are respectively arranged in the two U-shaped iron plates.
The utility model also provides an automatic focusing lens, include: a lens barrel; the zoom lens group and the focusing lens group are arranged in the lens barrel, and the zoom lens group and the focusing lens group are both provided with the lens group driving device; and the controller is used for controlling the zoom lens group to move and controlling the focusing lens group to move according to the moving distance of the zoom lens group.
In some embodiments, further comprising: the lens barrel comprises three groups of fixed lens groups arranged in the lens barrel, wherein the fixed lens groups are a first lens group, a second lens group and a third lens group respectively along the direction from the object side surface to the image side surface of an optical axis; the focusing lens group is arranged between the third lens fixing group and the second lens fixing group; the zoom lens group is arranged between the first lens fixing group and the second lens fixing group; and the diaphragm is arranged between the zoom lens group and the second lens fixing group.
Furthermore, the lens cone comprises a first lens cone for fixing the first lens fixing group, a second lens cone for fixing the second lens fixing group and a third lens cone for fixing the third lens fixing group, and the first lens cone, the second lens cone and the third lens cone are fixed in sequence through screw locking.
In some embodiments, the focusing lens group is disposed within a focusing housing; the lens group driving device for driving the focusing lens is a first driving device, and a driving coil corresponding to the first driving device is fixed on the focusing shell; the zoom lens group is arranged in the zoom shell; and the lens group driving device for driving the zoom lens is a second driving device, and a driving coil corresponding to the second driving device is fixed on the zoom shell.
Further, the number of the guide rods is two, and the guide rods include a first guide rod and a second guide rod, and the first guide rod and the second guide rod are arranged between the first lens barrel and the third lens barrel.
In some embodiments, the number of the guide rods is four, and the guide rods include a first guide rod, a second guide rod, a third guide rod and a fourth guide rod, and the first guide rod and the third guide rod are arranged between the first lens barrel and the second lens barrel and used for guiding the zoom lens group; the second guide rod and the fourth guide rod are arranged between the second lens barrel and the third lens barrel and used for guiding the focusing lens group.
In some embodiments, any one of the guide rods is fixed to the lens barrel, guide arms are configured on the focusing lens group and the zooming lens group, a U-shaped groove is formed in the guide arms, and the guide rod penetrates through the U-shaped groove.
When the driving coil is electrified and drives the lens group, the driving coil does not contact with the closed magnetic ring, so that noise caused by friction or vibration is reduced, and noise generated during zooming or focusing is reduced. Compare step motor and lead to the focusing speed slow scheduling problem that noise and step motor drive frequency limit lead to because of self high frequency vibrations, utilize the interact power between the magnetic field that drive coil and closed magnetic ring produced in this application, promote the drive coil and produce in the motion of closed magnetic ring contactless, can effectively avoid the noise and promote the speed of focusing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a focus driving apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a lens structure in an embodiment provided by the present invention;
fig. 3 is a schematic diagram of an optical principle in an embodiment provided by the present invention;
fig. 4 is a schematic diagram of an array magnetic stripe according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an output signal of a giant magnetoresistance sensor according to an embodiment of the present invention.
Reference numerals are as follows:
an autofocus lens 100; a lens group driving device 10; a driving coil 11; a lens group 12; a closed magnetic ring 13; a guide rod 14; an array magnetic stripe 15; a giant magnetoresistive sensor 16; a first barrel 21; a second barrel 22; a third barrel 23; a zoom lens group 30; a zoom housing 31; a focusing lens group 40; a focus housing 41; a diaphragm 50; a first lens group 60; a second lens group 70; a third lens group 80.
Detailed Description
The description of the embodiments of this specification should be taken in conjunction with the accompanying drawings, which are to be considered part of the entire written description. In the drawings, the shape or thickness of the embodiments may be exaggerated and simplified for convenience. Further, the components of the structures in the drawings are described separately, and it should be noted that the components not shown or described in the drawings are well known to those skilled in the art.
Any reference to directions and orientations in the description of the embodiments herein is merely for convenience of description and should not be construed as limiting the scope of the present invention in any way. The following description of the preferred embodiments refers to combinations of features which may be present independently or in combination, and the present invention is not particularly limited to the preferred embodiments. The scope of the present invention is defined by the claims.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not described herein in detail, but the present invention is not limited to the following embodiments.
A lens group driving apparatus 10 and an automatic focus lens 100 according to an embodiment of the present invention are described with reference to fig. 1 to 5.
As shown in fig. 1, the lens group drive apparatus 10 includes: a driving coil 11 fixedly connected with the lens group 12, wherein the lens group 12 at least comprises a lens and an outer shell, and the driving coil 11 is fixedly connected with the lens group 12 through the outer shell; the driving coil 11 penetrates through the closed magnetic ring 13 to form a cross structure, and the cross structure is generally vertical, namely, the surface formed by any circle of the driving coil 11 is vertical to the magnetic field of the closed magnetic ring 13; the optical axes of the parallel lens 12 groups are respectively arranged on two sides of the lens group 12, and the guide rods 14 are used for limiting the moving direction of the lens group 12; the driving coil 11 drives the lens group 12 movably along the guide bar 14 in the energized state.
The driving coil 11 fixed with the lens group 12 and the closed magnetic ring 13 form a cross structure, a magnetic field is formed around the closed magnetic ring 13, when the coil is electrified, the magnetic field generated by the closed magnetic ring 13 interacts with the magnetic field generated by the driving coil 11 to generate driving force, and the driving coil 11 and the lens group 12 fixed on the driving coil 11 move. When the lens group 12 is disposed on the guide bar 14 and the guide bar 14 is disposed parallel to the optical axis of the lens group 12, the lens group 12 can move along the guide bar 14, and when the lens group driving device 10 is powered on, the mutual force between the magnetic fields causes the driving coil 11 together with the lens group 12 to move along the guide bar 14. It can be understood that by changing the direction and magnitude of the current passing through the driving coil 11, the magnitude of the magnetic field generated by the driving coil 11 can be changed, thereby changing the driving direction and the moving speed of the driving coil 11 to the lens group 12. The direction and magnitude of the current in the driving coil 11 can be adjusted according to the magnitude of the actually small driving force.
When the lens group 12 is powered on and driven, the driving coil 11 is not in contact with the closed magnetic ring 13, so that noise caused by friction or vibration is reduced, and noise generated during zooming or focusing is reduced. Compare step motor and lead to the focusing speed slow scheduling problem that noise and step motor drive frequency limit lead to because of self high frequency vibrations, utilize the interact power between the magnetic field that drive coil 11 and closed magnetic ring 13 produced in the application, promote drive coil 11 and produce in the motion of closed magnetic ring 13 contactless, can effectively avoid the noise and promote the speed of focusing.
In some embodiments, the lens group driving device 10 is configured with a precision device, the precision device further comprising: the array magnetic strip 15, the arrangement mode of the array magnetic strip 15 is shown in fig. 4, fixed on the lens group 12; a giant magnetoresistive sensor 16 for detecting a change in position of the array magnetic stripe 15.
When the driving coil 11 is powered and moves, the array magnetic stripe 15 fixed on the lens group 12 also moves along the guide rod 14 along with the lens group 12, and when each magnetic pole of the array magnetic stripe 15 passes through the giant magnetoresistance sensor 16, a two-phase magnetic field gaussian curve is generated, as shown in fig. 5, the gaussian curve is a sine wave. The back-end circuitry and algorithms of the giant magnetoresistive sensor 16 amplify and process the gaussian curve signal. The phase difference of the two-phase sine waves is divided into several parts, and the parts are identified by a back-end algorithm to obtain higher displacement accuracy, for example, in some embodiments, the interval of the array magnetic strips 15 is selected to be 264um, the phase difference of the sine waves is fed back to be 66um, and the back-end algorithm divides the phase difference into 64 parts, and the accuracy of each part is 66um/64=1.03um. The focusing precision reaches 1um focusing precision, and the problem that the precision is insufficient due to the stepping precision, the screw transmission precision and the inherent backlash of the stepping motor in the traditional stepping motor transmission is effectively solved. It is understood that in some embodiments, the number of portions of the back-end circuit that the phase difference is divided may be determined according to the required accuracy, and is not limited to 64 portions.
In some embodiments, closed magnetic ring 13 includes: the two U-shaped iron plates are arranged in a manner that the opening directions are opposite to each other and buckled, a limiting rod used for limiting the driving coil 11 is arranged between the two U-shaped iron plates, the limiting rod is used for quickly positioning when the closed magnetic ring 13 and the driving coil 11 are assembled, the driving coil 11 can be prevented from falling off at the same time, and the two U-shaped iron plates and the limiting rod form a Chinese character 'ri';
and the two permanent magnets are respectively arranged in the two U-shaped iron plates.
Two U type iron plates are just right the lock back with the opening direction, and two permanent magnets set up respectively in two U type iron plates and form magnetic field, and wherein, U type iron plate includes a horizontal part and two vertical portions, and arbitrary permanent magnet sets up in the horizontal part of the U type iron plate that corresponds, is located the inboard of U type iron plate. The magnetic field in the closed magnetic ring 13 interacts with the magnetic field formed by the energized driving coil 11, the driving coil 11 is driven to move along the optical axis, and the limiting rod is parallel to the optical axis.
The driving coil 11 can be installed into the closed magnetic ring 13 through the opening of the two U-shaped iron plates, and forms a cross structure with the closed magnetic ring 13, and the two permanent magnets are arranged on the corresponding horizontal portions of the U-shaped iron plates, that is, the two permanent magnets are arranged opposite to each other to generate a vertical magnetic field.
The utility model discloses still provide an automatic focusing lens 100, as shown in FIG. 3, include: a lens barrel; a zoom lens group 30 and a focus lens group 40 which are arranged in the lens barrel, wherein the zoom lens group 30 and the focus lens group 40 are both provided with the lens group driving device 10; and a controller for controlling the movement of the zoom lens group 30 and controlling the movement of the focus lens group 40 according to the movement distance of the zoom lens group 30.
The zoom lens group 30 and the focus lens group 40 equipped with the lens group driving device 10 are capable of linear motion parallel to the optical axis, and when the image plane and the object distance are fixed and the position of the zoom lens group 30 is determined, the focus lens group 40 has a unique position corresponding to the image plane and the object distance in optical theory, so that a clear image is obtained. And when the zoom lens group 30 moves, the focus lens group 40 also changes according to the position and the moving distance of the zoom lens group 30 to obtain a clear presentation image. By arranging the lens group driving device 10 on the zoom lens group 30 and the focus lens group 40, the driving force formed by the interaction between the driving coil 11 of the lens group driving device 10 and the magnetic field generated by the closed magnetic ring 13 drives the zoom lens group 30 and the focus lens group 40 to move, and because the driving coil 11 and the closed magnetic ring 13 are not in contact during the movement, the noise generated by friction or vibration is prevented, and the noise problem of the lens in the zooming and focusing processes is effectively relieved. And because lens drive arrangement does not have transmission back clearance and step-out phenomenon, so the precision of focusing improves, produces the drive power for the interact between the magnetic field between drive coil 11 and the closed magnetic ring 13, has also effectively improved because of the unable problem that promotes of focusing speed that traditional step motor caused because of inherent drive frequency and the response speed of opto-coupler are slow.
It is understood that the driving device of the zoom lens group 30 can be configured according to practical situations, and those skilled in the art can select the lens group driving device 10 or a common stepping motor according to practical situations.
The realization of automatic focusing is realized through a software algorithm of a controller, when the camera finds virtual focus, the controller controls a lens driving device to search a focus clearest point according to the set algorithm requirement, and drives the focusing lens group 40 to a specified position according to the position and the difference between the current position and the target position of the focusing lens group 40 fed back by a displacement feedback device.
In some embodiments, further comprising: three fixed lens groups arranged in the lens barrel, as shown in fig. 3, the fixed lens groups are a first lens group 60, a second lens group 70 and a third lens group 80 along the direction from the object side to the image side of the optical axis; the focusing lens group 40 is disposed between the third lens group 80 and the second lens group 70; the zoom lens assembly 30 is disposed between the first lens group 60 and the second lens group 70; and a diaphragm 50 disposed between the zoom lens group 30 and the second lens group 70.
The distance between the first lens group 60 and the zoom lens group 30 is L1, and the distance between the third lens group 80 and the focus lens group 40 is L2. When the image plane and the object distance are fixed, and L1 is changed, L2 has a unique corresponding value in the optical theory so as to achieve the best imaging resolution, and the whole lens has a corresponding focal length value; when the shot object distance changes, the L2 distance can be adjusted to obtain a clear image again.
Further, as shown in fig. 3, the lens barrel includes a first lens barrel 21 for fixing the first lens fixing group 60, a second lens barrel 22 for fixing the second lens fixing group 70, and a third lens barrel 23 for fixing the third lens fixing group 80, and the first lens barrel 21, the second lens barrel 22, and the third lens barrel 23 are sequentially fixed by screw locking.
The first lens cone 21, the second lens cone 22 and the third lens cone 23 are fixed by locking, so that the first lens fixing lens group 60, the second lens fixing lens group 70 and the third lens fixing lens group 80 are mutually fixed and protect the fixed lens groups, and the fixed lens groups are prevented from being damaged due to collision. Meanwhile, the distance among the first lens group 60, the second lens group 70 and the third lens group 80 is fixed, and a supporting and moving space is provided for the focusing lens group 40 and the zooming lens group 30. Wherein the giant magnetoresistance sensor 16 is provided on the third barrel 23.
In some embodiments, the focus lens group 40 is disposed within a focus housing 41; a lens group driving device 10 for driving the focusing lens is a first driving device, and a driving coil 11 corresponding to the first driving device is fixed on the focusing housing 41; the zoom lens group 30 is disposed in a zoom housing 31; the lens group driving device 10 for driving the zoom lens is a second driving device, and the driving coil 11 corresponding to the second driving device is fixed to the zoom housing 31.
The focusing housing 41 and the zooming housing 31 protect the focusing lens assembly 40 and the lens assembly in the zooming lens assembly 30, and also have the function of supporting lenses, so as to prevent the focusing lens assembly 40 and the zooming lens from being damaged or destroyed due to collision or friction of external parts or devices, and meanwhile, the focusing housing 41 and the zooming housing 31 are beneficial to the quick assembly of the focusing lens assembly 40 and the zooming lens assembly 30, so that the installation of a driving device is convenient.
Further, when the focusing lens assembly 40 and the zooming lens assembly 30 have different masses and sizes, the driving coil corresponding to the first driving device and the driving coil corresponding to the second driving device also have different size parameters, and similarly, the corresponding closed magnetic rings also have different size parameters.
Further, the two guide rods 14 include a first guide rod and a second guide rod, and the first guide rod and the second guide rod are disposed between the first barrel 21 and the third barrel 23.
The first guide bar is used for guiding the zoom lens group 30, the second guide bar is used for guiding the focusing lens group 40, and the focusing lens group 40 and the zoom lens group 30 enable the zoom lens group 30 and the focusing lens group 40 to move between the first lens barrel 21 and the third lens barrel 23, so that the moving range of the zoom lens group 30 and the focusing lens group 40 is limited.
In some embodiments, the number of the guide bars 14 is four, and includes a first guide bar, a second guide bar, a third guide bar, and a fourth guide bar, which are disposed between the first barrel 21 and the second barrel 22, for guiding the zoom lens group 30; a second guide bar and a fourth guide bar are disposed between the second barrel 22 and the third barrel 23 for guiding the focusing lens group 40.
The first guide rod, the second guide rod, the third guide rod and the fourth guide rod are arranged in parallel with the optical axis of the lens, and when the zoom lens group 30 and the focus lens group 40 are guided, the moving routes of the zoom lens group 30 and the focus lens group 40 are fixed, so that the zoom lens group 30 and the focus lens group 40 can move along the direction of the optical axis of the lens, and the optical axes of the zoom lens group 30 and the focus lens group 40 coincide with the optical axis of the whole lens, so as to meet the requirements of the optical system.
In some embodiments, any one of the guiding rods 14 is fixed to the lens barrel, and the focusing lens group 40 and the zooming lens group 30 are provided with a guiding arm, and a U-shaped groove is formed on the guiding arm, and the guiding rod 14 passes through the U-shaped groove.
By arranging the guide arm and the U-shaped groove, the focusing lens group 40 and the zooming lens group 30 are set on the guide rod 14, so that the focusing lens group 40 and the zooming lens group 30 are fixed more stably with the guide rod 14, and the requirement that the focusing lens group 40 and the zooming lens group 30 move on the guide rod 14 is met.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A lens group driving apparatus, comprising:
a driving coil (11) fixedly connected with the lens group (12);
the driving coil (11) penetrates through the closed magnetic ring (13) to form a cross structure;
the guide rods (14) are parallel to the optical axis of the lens group (12) and are respectively arranged on two sides of the lens group (12), and the guide rods (14) are used for limiting the moving direction of the lens group (12);
the driving coil (11) drives the lens group (12) to move along the guide rod (14) in a power-on state.
2. The lens group driving apparatus according to claim 1, characterized in that the lens group driving apparatus is provided with a precision apparatus, the precision apparatus further comprising:
the array magnetic strip (15) is fixed on the lens group (12);
a giant magneto-resistive sensor (16) for detecting a change in position of the array magnetic stripe (15).
3. A lens group drive arrangement as claimed in claim 1, characterized in that the closed magnetic ring (13) comprises:
the opening direction of the two U-shaped iron plates is opposite to the buckling direction, a limiting rod used for limiting the driving coil (11) is arranged between the two U-shaped iron plates, and the two U-shaped iron plates and the limiting rod form a Chinese character 'ri';
and the two permanent magnets are respectively arranged in the two U-shaped iron plates.
4. An autofocus lens, comprising:
a lens barrel;
a zoom lens group (30) and a focus lens group (40) provided within the lens barrel, the zoom lens group (30) and the focus lens group (40) each being configured with the lens group driving apparatus according to any one of claims 1 to 3;
a controller for controlling the zoom lens group (30) to move, and controlling the focus lens group (40) to move according to a moving distance of the zoom lens group (30).
5. The autofocus lens of claim 4, further comprising:
the lens barrel comprises three groups of fixed lens groups arranged in the lens barrel, wherein the fixed lens groups are a first lens group (60), a second lens group (70) and a third lens group (80) respectively along the direction from the object side surface to the image side surface of an optical axis;
the focusing lens group (40) is arranged between the third lens fixing group (80) and the second lens fixing group (70);
the zoom lens group (30) is arranged between the first lens fixing group (60) and the second lens fixing group (70);
and the diaphragm (50) is arranged between the zoom lens group (30) and the second lens fixing group (70).
6. The autofocus lens of claim 5, wherein the lens barrel includes a first lens barrel (21) for fixing the first lens group (60), a second lens barrel (22) for fixing the second lens group (70), and a third lens barrel (23) for fixing the third lens group (80), and the first lens barrel (21), the second lens barrel (22), and the third lens barrel (23) are sequentially fixed by screw locking.
7. Autofocus lens according to claim 4, characterized in that the focusing lens group (40) is arranged in a focusing housing (41);
the lens group driving device for driving the focusing lens is a first driving device, and a driving coil (11) corresponding to the first driving device is fixed on the focusing shell (41);
the zoom lens group (30) is arranged in a zoom shell (31);
the lens group driving device for driving the zoom lens is a second driving device, and a driving coil (11) corresponding to the second driving device is fixed on the zoom shell (31).
8. Auto-focus lens according to claim 6, characterized in that the two guide rods (14) comprise a first guide rod and a second guide rod, which are arranged between the first barrel (21) and the third barrel (23).
9. Autofocus lens according to claim 6, characterized in that the guide rods (14) are four, comprising a first guide rod, a second guide rod, a third guide rod and a fourth guide rod,
the first guide rod and the third guide rod are arranged between the first lens barrel (21) and the second lens barrel (22) and used for guiding the zoom lens group (30);
the second guide rod and the fourth guide rod are arranged between the second lens barrel (22) and the third lens barrel (23) and used for guiding the focusing lens group (40).
10. The autofocus lens assembly of claim 4, wherein any of the guide rods (14) is fixed to the barrel, and guide arms are disposed on the focusing lens group (40) and the zooming lens group (30), and have U-shaped grooves through which the guide rods (14) pass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222712058.1U CN218158491U (en) | 2022-10-14 | 2022-10-14 | Lens group driving device and automatic focusing lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222712058.1U CN218158491U (en) | 2022-10-14 | 2022-10-14 | Lens group driving device and automatic focusing lens |
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| CN218158491U true CN218158491U (en) | 2022-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508974A (en) * | 2022-10-14 | 2022-12-23 | 舜宇光学(中山)有限公司 | Lens group driving device and auto focus lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508974A (en) * | 2022-10-14 | 2022-12-23 | 舜宇光学(中山)有限公司 | Lens group driving device and auto focus lens |
| CN115508974B (en) * | 2022-10-14 | 2025-08-08 | 舜宇光学(中山)有限公司 | Lens group driving device and autofocus lens |
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