Lens driving device and camera module

Abstract

The invention discloses a lens driving device and a camera module. The lens driving device comprises: a base; a frame, wherein the frame is movably arranged on the base; the carrier is used for bearing an optical lens, and the carrier is movably arranged on the frame; the lens driving assembly is configured to drive the carrier to move relative to the base along a first direction and a second direction perpendicular to the first direction, and the lens driving assembly comprises a driving magnet part and a driving coil part arranged opposite to the driving magnet part; and a focusing position sensing assembly, and the focusing position sensing assembly and the driving magnet part are arranged at different sides of the lens driving device. In this way, the performance of the lens driving device is optimized.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a lens driving device and a camera module. Background Art

[0002] As living standards improve, consumers have an increasing demand for camera quality, and accordingly, the requirements for the lens driving device in the camera module increase accordingly.

[0003] In addition to the common optical focus and optical image stabilization functions, the demand for variable aperture is also gradually increasing. How to set the aperture device in a smaller camera module without hindering the optical focus and optical image stabilization functions has put forward new requirements for the structural design of the lens drive device.

[0004] Therefore, it is hoped to propose a new lens driving device and camera module design to make the driving of the optical lens more stable and improve the imaging quality of the camera module. Summary of the invention

[0005] One purpose of the present application is to provide a lens driving device and a camera module, which overcome the shortcomings of the prior art, optimize the structure of the lens driving device, and improve the imaging quality of the camera module having the lens driving device.

[0006] According to one aspect of the present application, a lens driving device is provided, comprising:

[0007] Pedestal;

[0008] a frame, the frame being movably disposed on the base;

[0009] A carrier, the carrier is used to carry the optical lens, and the carrier is movably arranged on the frame;

[0010] a lens driving assembly, the lens driving assembly being configured to drive the carrier to move relative to the base along a first direction and a second direction perpendicular to the first direction, the lens driving assembly comprising a driving magnet portion and a driving coil portion disposed opposite to the driving magnet portion; and

[0011] A focus position sensing component, wherein the focus position sensing component and the driving magnet portion are arranged on different sides of the lens driving device.

[0012] In some embodiments, the focus position sensing component includes a focus position sensing element and a focus position sensing magnet arranged relatively along the first direction, the first direction is parallel to the optical axis of the optical lens, the focus position sensing element is fixed to the carrier, and the focus position sensing magnet is fixed to the frame.

[0013] In some embodiments, the driving magnet portion is disposed on the frame, and the driving magnet portion includes a first driving magnet, a second driving magnet and a third driving magnet, the second driving magnet and the third driving magnet are disposed on both sides of the first driving magnet, and the focus position sensing magnet is disposed on the opposite side of the first driving magnet.

[0014] In some embodiments, the bottom surface of the first driving magnet is flush with the bottom surfaces of the second driving magnet and the third driving magnet, the top surface of the first driving magnet is higher than the top surfaces of the second driving magnet and the third driving magnet, and the bottom surface of the focus position sensing magnet is lower than the top surfaces of the second driving magnet and the third driving magnet.

[0015] In some embodiments, the driving coil portion includes a focusing coil portion and an anti-shake coil portion, wherein the focusing coil portion is arranged on the carrier and opposite to the driving magnet portion, and the focusing coil portion includes a focusing coil arranged opposite to the first driving magnet; the anti-shake coil portion is arranged on the base and opposite to the driving magnet portion, and the anti-shake coil portion includes a first anti-shake coil, a second anti-shake coil and a third anti-shake coil respectively arranged opposite to the first driving magnet, the second driving magnet and the third driving magnet.

[0016] In some embodiments, the lens driving device also includes a driving conductive component, which includes a carrier conductive part arranged on the carrier, a base conductive part arranged on the base, and a conductive connecting part electrically connecting the carrier conductive part and the base conductive part, wherein the carrier conductive part includes a first coil conductive part, a second coil conductive part and a carrier circuit board fixed to the carrier, the focus position sensing element is fixed and electrically connected to the carrier circuit board, the first coil conductive part and the second coil conductive part electrically connect the focus coil and the carrier circuit board, and the anti-shake coil part is electrically connected to the base conductive part.

[0017] In some embodiments, the lens driving device also includes a focus support portion and a focus magnetic portion, wherein the focus support portion is arranged between the carrier and the frame along a first direction, and the focus magnetic portion is used to adsorb the carrier to the frame so that the carrier is supported on the side of the frame close to the optical axis through the focus support portion.

[0018] In some embodiments, the lens driving device also includes an anti-shake support portion and an anti-shake magnetic portion, the anti-shake support portion is arranged between the frame and the base along the second direction, and the anti-shake magnetic portion is used to adsorb the frame to the base so that the frame is supported on the top surface of the base through the anti-shake support portion.

[0019] In some embodiments, the anti-shake support part includes at least three anti-shake balls, and any two of the at least three anti-shake balls are used as bearing axes. The torque exerted on the frame by the magnetic attraction force between the anti-shake magnetic attraction part and the driving magnet part is greater than the torque exerted on the frame by the gravity of the frame and other camera module components supported by the frame.

[0020] In some embodiments, the anti-shake support portion includes three anti-shake balls, and when viewed along the first direction, one of the anti-shake balls and the focus position sensing magnet at least partially overlap.

[0021] In some embodiments, the driving conductive component is also used to be electrically connected to an aperture device, and the aperture device includes a first electrical conduction tape and a second electrical conduction tape, the first electrical conduction tape and the second electrical conduction tape respectively extend outward from opposite sides of the aperture device and are fixed to the top surface of the carrier, and the first electrical conduction tape and the second electrical conduction tape are respectively electrically connected to the driving conductive component.

[0022] In some embodiments, the first electroconductance belt extends from the aperture device to above the second drive magnet, and the second electroconductance belt extends from the aperture device to above the third drive magnet. When viewed along the first direction, at least a portion of the first electroconductance belt overlaps with the second drive magnet, and at least a portion of the second electroconductance belt overlaps with the third drive magnet.

[0023] In some embodiments, the lens driving device also includes a cover body fixed to the base, the aperture device is arranged above the cover body, the first electrical conduction belt and the second electrical conduction belt pass through the cover body through hole of the cover body and are fixed to the top surface of the carrier and electrically connected to the carrier conductive part and the conductive connecting part fixed to the carrier.

[0024] In some embodiments, the carrier conductive portion further includes two aperture conductive parts, a first aperture conductive part and a second aperture conductive part, and the first electrical conduction lead-out band and the second electrical conduction lead-out band are electrically connected to the two aperture conductive parts and the conductive connection portion, respectively.

[0025] According to another aspect of the present application, a camera module is provided, comprising:

[0026] An optical lens having an optical axis;

[0027] A photosensitive device, the photosensitive device is used to receive the light emitted by the optical lens to perform imaging; and

[0028] A lens driving device as described in any of the above, wherein the driving device is suitable for driving the optical lens to move.

[0029] In some embodiments, the camera module also includes an aperture device fixed to the optical lens, the aperture device includes an aperture fixed part, an aperture movable part, a blade assembly, an aperture driving part and an aperture conductive part, the aperture movable part is movably arranged on the aperture fixed part, the blade assembly is linked to the aperture movable part, the aperture driving part is arranged between the aperture movable part and the aperture fixed part, the aperture conductive part is configured to provide driving power to the aperture driving part, the aperture driving part drives the aperture movable part to move relative to the aperture fixed part, the blade assembly has an adjustable aperture hole, and the blade assembly changes the size of the aperture hole as the aperture movable part moves.

[0030] Other embodiments and features are partially described in the following description, and those skilled in the art will understand after reviewing the specification or learn these embodiments and features through practice of the disclosed subject matter. A further understanding of the features and advantages of the present disclosure can be achieved by reference to the remainder of the specification and drawings which constitute a part of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional schematic diagram of a camera module according to the present application;

[0032] Figure 2 and Figure 3 is a schematic cross-sectional view of a camera module according to the present application in two vertical directions;

[0033] Figure 4 is an exploded schematic diagram of an aperture device according to the present application being deployed;

[0034] Figure 5 is an exploded schematic diagram of the lens driving device according to the present application;

[0035] Figure 6 is a three-dimensional schematic diagram of a carrier and a frame according to the present application;

[0036] Figure 7 is a three-dimensional schematic diagram of the lens driving device according to the present application after removing the carrier, frame, base and some other components;

[0037] Figure 8 is a top view schematic diagram of the lens driving device according to the present application with the cover removed;

[0038] Fig. 9 It is a three-dimensional schematic diagram of the camera module according to the present application after the cover is removed.

[0039] Fig.10It is a top view schematic diagram of the driving magnet part, the anti-shake magnetic attraction part and the anti-shake support part according to the present application. DETAILED DESCRIPTION

[0040] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0041] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps.

[0042] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0044] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0045] It should be noted that, as used in this application, the terms "substantially", "approximately" and similar terms are used as terms to express approximation rather than as terms to express degree, and are intended to account for the inherent deviations in measurements or calculations that would be recognized by a person of ordinary skill in the art.

[0046] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, a contact connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] "Configured to" various units, circuits, or other components may be described or recited as "configured to" perform one or more tasks. In such contexts, "configured to" is used to imply a structure (e.g., circuitry) by indicating that the unit / circuit / component includes the structure that performs the one or more tasks during operation. In addition, "configured to" may include general structures (e.g., general circuitry) manipulated by software and / or firmware to operate in a manner that is capable of performing the one or more tasks to be solved. "Configured to" may also include adjusting a manufacturing process (e.g., a semiconductor fabrication facility) to manufacture a device (e.g., an integrated circuit) suitable for implementing or performing one or more tasks.

[0048] The terms used in the description herein are only for describing specific embodiments and are not intended to be limiting. As used in the specification and the appended claims, the singular forms of "one", "a kind of" and "the" are intended to also cover the plural forms, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" used herein refers to and covers any and all possible combinations of one or more items in the items listed in association. It will also be understood that the terms "including" and / or "comprising" when used in this specification specify the presence of stated features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or their grouping.

[0049] In order to control the amount of incident light entering the camera module to adapt to shooting in different environments, an aperture device can be provided in the camera module to adjust the size of the aperture of the camera module. The aperture device needs to be set on the light path of the camera module and needs to be powered on to adjust the aperture. Therefore, when configuring the aperture device in the camera module, it is necessary to consider the setting position and power-on method of the aperture device. In particular, for a camera module with a lens driving device, it is also necessary to consider the coordination between the lens driving device and the aperture device to reduce the adverse effects caused by the configuration of the aperture device.

[0050] Based on this, the present application provides a lens driving device and a camera module having the lens driving device. The camera module is configured with an aperture device, and the lens driving device is suitable for adapting to the aperture device so that the interference problem between the function of the aperture device and the function of the lens driving device is reduced, providing a good shooting effect.

[0051] Accordingly, Figures 1 to 9 The lens driving device 20 and the camera module 1 having the lens driving device 20 according to some embodiments of the present application are shown. Figures 1 to 9 As shown, the camera module 1 includes an optical lens 10, a lens driving device 20, a photosensitive device 30 and an aperture device 40. The optical lens 10 is held on the photosensitive path of the photosensitive device 30 by the lens driving device 20, and the photosensitive device 30 is used to receive the light emitted by the optical lens 10 for imaging to obtain an image of the subject. The lens driving device 20 is suitable for driving the optical lens 10 to move to achieve optical performance adjustment (for example, for achieving optical focus, optical image stabilization and other functions), and the aperture device 40 is arranged on the object side of the optical lens 10 to adjust the amount of light incident on the optical lens 10, thereby adjusting the imaging effect of the image formed by the photosensitive device 30.

[0052] The optical lens 10 includes a lens barrel 12 and at least one optical lens 11 installed in the lens barrel 12. The optical lens 10 has an optical axis O, which is also the optical axis of the plurality of optical lenses 11. At least one optical lens 11 is arranged in the lens barrel 12 along the optical axis, and the photosensitive device 30 is arranged opposite to the optical lens 10 along the optical axis. For ease of description, the side of the camera module 1 facing the object is the object side, and the side of the camera module 1 facing the photosensitive device 30 is the image side. The optical axis direction includes the direction along the optical axis pointing to the image side and the direction along the optical axis pointing to the object side. The horizontal direction is the direction perpendicular to the optical axis direction, and the height direction is the direction along the optical axis direction.

[0053] In some embodiments of the present application, the lens barrel 12 is an integrated lens barrel, and all optical lenses 11 are installed in one integrated lens barrel; in other embodiments of the present application, the lens barrel 12 is a split lens barrel, which includes a first lens barrel 121 and a second lens barrel 122, the first lens barrel 121 is fixed to the object side of the second lens barrel 122 by bonding with an adhesive medium, some optical lenses 11 are installed in the first lens barrel 121, and other optical lenses 11 are installed in the second lens barrel 122. It should be understood that the optical lens 10, whether it is an integrated lens barrel or a split lens barrel, can be used in the camera module 1 of the present application.

[0054] Continue to refer to Figure 2 and Figure 3The optical lens 10 is fixed in the lens driving device 20, and the photosensitive device 30 is fixed on the image side of the lens driving device 20. Then, the optical lens 10 can be maintained on the photosensitive path of the photosensitive device 30 by the lens driving device 20. The optical lens 10 is suitable for being driven by the lens driving device 20 to realize functions such as optical image stabilization and optical focus.

[0055] The aperture device 40 is fixed to the lens barrel 12 of the optical lens 10, so that the relative position of the aperture device 40 and the optical lens 10 remains fixed. In this way, when the optical lens 10 is driven by the lens driving device 20, the aperture device 40 can move with the movement of the optical lens 10, and the movement of the optical lens 10 does not affect the adjustment of the aperture device 40 on the amount of light entering the optical lens 10.

[0056] Specifically, the photosensitive device 30 includes a photosensitive component 31 and a filter component 32. The photosensitive component 31 includes a chip circuit board 312, a photosensitive chip 311 electrically connected to the chip circuit board 312, and at least one electronic component 313. The photosensitive chip 311 is used to receive the light reflected by the subject collected by the optical lens 10 for imaging and is electrically connected to an external electronic device through the chip circuit board 312. The chip circuit board 312 can be a rigid circuit board (PCB), a flexible circuit board (FPC) or a rigid-flexible board. The electronic component 313 can be one or more of passive electronic devices such as resistors and capacitors, or one or more of active electronic devices such as driver chips and storage chips.

[0057] The filter assembly 32 includes a filter element 321 and a filter bracket 322. The filter element 321 is mounted and fixed on the filter bracket 322 and corresponds to the photosensitive chip 311, so that the filter element 321 is maintained on the photosensitive path of the photosensitive chip 311. The filter bracket 322 has a light hole, and the incident light passing through the optical lens 10 is incident on the photosensitive chip 311 through the light hole. The filter element 321 is arranged between the optical lens 10 and the photosensitive chip 311, and filters the incident light to filter out the incident light, such as infrared light, and other stray light that is not necessary for imaging. The filter bracket 322 is fixed to the chip circuit board 312. It should be understood that the filter bracket 322 can be prefabricated and then fixed to the chip circuit board 312 by, for example, bonding with an adhesive medium; or it can be directly fixed to the chip circuit board 312 by, for example, an integrated molding process such as a molding process, and the present application is not limited thereto. It is worth mentioning that, in one example, the photosensitive component 31 can be fixed to the image side of the lens driving device 20 through the filter bracket 322; in another example, the photosensitive component 31 can also be fixed to the image side of the lens driving device 20 through the chip circuit board 312.

[0058] refer to Figures 2 to 4As shown, the aperture device 40 includes an aperture fixed part 41, an aperture movable part 42, a blade assembly 43, an aperture driving part 44 and an aperture conductive part 47. The aperture movable part 42 is movably arranged on the aperture fixed part 41, the blade assembly 43 is linked to the aperture movable part 42, the aperture driving part 44 is arranged between the aperture movable part 42 and the aperture fixed part 41, the aperture conductive part 47 is configured to provide a driving power supply for the aperture driving part 44, the aperture driving part 44 drives the aperture movable part 42 to move relative to the aperture fixed part 41, the blade assembly 43 has an adjustable aperture hole, and the blade assembly 43 changes the size of the aperture hole as the aperture movable part 42 moves. It should be understood that the aperture driving part 44 can be implemented as a plurality of types of driving elements such as a coil-magnet pair, an SMA wire, a piezoelectric actuator, etc., and the present application is not limited thereto.

[0059] The aperture fixing part 41 and the aperture movable part 42 each have a through hole to allow light to pass through the aperture device 40. Specifically, the aperture fixing part 41 includes an aperture fixing seat 411 and an aperture upper cover 412 fixed to the aperture fixing seat 411, and the aperture fixing seat 411 and the aperture upper cover 412 each have a corresponding through hole to allow light to pass through the aperture fixing part 41. The aperture fixing seat 411 and the aperture upper cover 412 are mutually buckled to form an accommodating cavity for accommodating the aperture movable part 42, the blade assembly 43 and the aperture driving part 44. The aperture movable part 42 also has a through hole to allow light to pass through the aperture movable part 42.

[0060] Furthermore, the aperture device 40 is directly or indirectly fixed to the optical lens 10 through the aperture fixing seat 411 of the aperture fixing portion 41, and the relative position between the aperture device 40 and the optical lens 10 can be kept fixed. Even if the optical lens 10 moves, the aperture device 40 can move with the optical lens 10 without affecting the aperture adjustment effect. Specifically, in one example, Figure 2 and Figure 3As shown, the aperture fixing seat 411 is fixed to the lens barrel 12 of the optical lens 10, so that the aperture device 40 is directly fixed to the optical lens 10. The lens barrel 12 has an aperture mounting surface, the optical lens 10 has a radial dimension that gradually increases along the incident direction of light, the portion of the optical lens 10 above the aperture mounting surface extends into the aperture device 40, and the aperture fixing seat 411 is fixed to the aperture mounting surface by, for example, bonding with an adhesive medium. In another example, the lens barrel 12 can be the aforementioned split lens barrel, the aperture mounting surface is located on the second lens barrel 122, the aperture fixing seat 411 is fixed to the aperture mounting surface of the second lens barrel 122, the first lens barrel 121 is fixed to the aperture device 40, so that the aperture device 40 is arranged between the first lens barrel 121 and the second lens barrel 122, so that the aperture device 40 can change the size of the aperture hole between the multiple optical lenses 11 of the optical lens 10. In another example, the aperture fixing seat 411 is fixed to a component in the lens driving device 20 for holding the optical lens 10. For example, the aperture fixing seat 411 is fixed to the carrier 24 of the lens driving device 20, and the optical lens 10 is fixed in the carrier 24, so that the aperture device 40 can be indirectly fixed to the optical lens 10.

[0061] As mentioned above, the aperture device 40 is fixed to the optical lens 10. When the lens driving device 20 drives the optical lens 10 to move, it also drives the aperture device 40 to move accordingly, which leads to an increase in the driving force required for the lens driving device 20. At the same time, it is also necessary to consider how the aperture conductive part 47 of the aperture device 40 can conduct electricity without affecting the normal operation of other functions of the camera module 1, for example, to avoid affecting the movement of the optical lens 10 driven by the lens driving device 20 due to the setting of the aperture conductive part 47.

[0062] To solve at least one of the above problems, the present application provides an optimized lens driving device 20. The lens driving device 20 of the present application can drive the optical lens 10 to move along the optical axis direction to adjust the distance between the optical lens 10 and the photosensitive device 30 to achieve the focusing function; the lens driving device 20 can drive the optical lens 10 to move along the direction perpendicular to the optical axis to make the optical lens 10 translate relative to the photosensitive device 30 to achieve the anti-shake function.

[0063] like Figures 1 to 9As shown, the lens driving device 20 includes a base 22, a frame 23, a carrier 24 and a lens driving assembly 25. The carrier 24 is used to carry the optical lens 10, and the carrier 24 is movably arranged in the frame 23. The lens driving assembly 25 drives the carrier 24 to move relative to the frame 23 along a first direction, so that the carrier 24 and the optical lens 10 fixed to the carrier 24 can move along the first direction under the drive of the lens driving assembly 25. For example, the optical lens 10 can be fixed to the carrier 24 by bonding or welding with an adhesive medium, or by making the lens barrel 12 of the optical lens 10 and the carrier 24 integrally formed, and the present application is not limited thereto. The frame 23 is movably arranged in the base 22, and the lens driving assembly 25 drives the frame 23 to move relative to the base 22 along a second direction perpendicular to the first direction, so that the frame 23 and the carrier 24 arranged in the frame 23 can move along the second direction perpendicular to the first direction under the drive of the lens driving assembly 25. It should be understood that, since the carrier 24 is disposed in the frame 23, when the frame 23 moves relative to the base 22 along the second direction, the carrier 24 and the optical lens 10 also move along the second direction with the frame 23. In one example, the first direction is parallel to the optical axis of the optical lens 10, and the movement of the optical lens 10 along the first direction can realize the focus function of the camera module; the second direction is perpendicular to the optical axis direction of the optical lens 10, and the movement of the frame 23, the carrier 24 and the optical lens 10 along the second direction can realize the anti-shake function of the camera module.

[0064] It should be understood that the base 22 is the stator part of the lens driving device 20. When the lens driving device 20 drives the optical lens 10 to move, the base 22 as the stator part remains relatively fixed, and other components and the optical lens 10 move relative to the base 22. In one example, the base 22 is fixed to the photosensitive device 30, so that the lens driving device 20 is fixed to the photosensitive device 30 through the base 22. For example, the base 22 can be directly fixed to the photosensitive component 31 by being fixed to the chip circuit board 312 of the photosensitive component 31; the base 22 can also be fixed to the photosensitive component 31 indirectly by being fixed to the filter bracket 322.

[0065] In one example, the carrier 24 has a carrier through hole 246, the frame 23 has a frame through hole 235, the base 22 has a base through hole 226, and the optical lens 10 is accommodated in the carrier through hole 246 of the carrier 24, so that the imaging light can enter the photosensitive device 30 through the carrier through hole 246, the frame through hole 235 and the base through hole 226. It should be understood that the carrier 24, the frame 23 and the base 22 do not have through holes, and the imaging light can also pass through the carrier 24, the frame 23 and the base 22, for example, the carrier 24, the frame 23 and the base 22 are not formed on the light path of the imaging light, so as not to block the passage of the imaging light. In one example, the carrier 24 is formed on a part of the side surface of the optical lens 10, the frame 23 is formed outside the part of the side surface of the carrier 24, and the base 22 is formed below a part of the bottom surface of the frame 23, so that the carrier 24, the frame 23 and the base 22 do not form corresponding through holes and do not block the passage of the imaging light.

[0066] In one example, the lens driving device 20 further includes a focus support portion 262, a focus magnetic attraction portion 261, an anti-shake support portion 264, and an anti-shake magnetic attraction portion 263. The focus support portion 262 is disposed between the carrier 24 and the frame 23 along the first direction, and the focus magnetic attraction portion 261 is used to adsorb the carrier 24 to the frame 23 so that the carrier 24 and the frame 23 clamp the focus support portion 262, so that the carrier 24 is supported on the side of the frame 23 close to the optical axis through the focus support portion 262. The focus support portion 262 is clamped between the carrier 24 and the frame 23, and the focus support portion 262 moves relative to at least one of the carrier 24 and the frame 23 in a sliding friction or rolling friction manner, so that the carrier 24 can move relative to the frame 23 along the first direction with a small friction resistance. The anti-shake support part 264 is disposed between the frame 23 and the base 22 along the second direction, and the anti-shake magnetic suction part 263 is used to attract the frame 23 to the base 22 so that the frame 23 and the base 22 clamp the anti-shake support part 264, so that the frame 23 is supported on the top surface of the base 22 through the anti-shake support part 264. Here, the top surface of the base 22 refers to the side facing the object side. The anti-shake support part 264 is clamped between the frame 23 and the base 22, and the anti-shake support part 264 moves relative to at least one of the frame 23 and the base 22 in a sliding friction or rolling friction manner, so that the frame 23 can move relative to the base 22 along the second direction with a small friction resistance.

[0067] In one example, the lens driving device 20 also includes a position sensing component, which is communicatively connected to the lens driving component 25, and the position sensing component is used to obtain position information of the carrier 24 and the optical lens 10 fixed to the carrier 24, thereby controlling the carrier 24 and the optical lens 10 to move along the first direction and / or the second direction.

[0068] In one example, the lens driving device 20 further includes a driving conductive component 27, which is used to electrically conduct the various electrical components in the camera module 1. Specifically, the driving conductive component 27 is electrically connected to the lens driving component 25 and the position sensing component in the lens driving device 20. Further, the driving conductive component 27 can also be electrically connected to the aperture device 40 and the photosensitive device 30, so that the aperture device 40 and the lens driving device 20 can be electrically connected to the photosensitive device 30 through the driving conductive component 27 and electrically connected to the external electronic device through the chip circuit board 312 of the photosensitive device 30.

[0069] In one example, the lens driving device 20 further includes a cover 21 fixed to the base 22, and the cover 21 and the base 22 are mutually buckled to form a receiving cavity to accommodate the frame 23, the carrier 24, the lens driving assembly 25, the focus support part 262, the focus magnetic attraction part 261, the anti-shake support part 264, the anti-shake magnetic attraction part 263, the position sensing assembly, and the driving conductive assembly 27. On the one hand, dust can be prevented from entering, and on the other hand, the components can be prevented from being damaged when impacted. It should be understood that the cover 21 has a cover through hole 211, so that the optical lens 10 can extend from the cover 21 through the cover through hole 211.

[0070] Furthermore, the specific structure and position of each component are described in order to more clearly describe the advantages of the lens driving device 20 of the present application.

[0071] Specifically, the lens driving assembly 25 includes a driving magnet part 252 and a focusing coil part 251 and an anti-shake coil part 253 respectively arranged opposite to the driving magnet part 252. Among them, the driving magnet part 252 is arranged on the frame 23, and the focusing coil part 251 is arranged on the carrier 24 and opposite to the driving magnet part 252. When the focusing coil part 251 generates a magnetic field under the excitation of current, the focusing coil part 251 and the carrier 24 fixed to the focusing coil part 251 move relative to the driving magnet part 252 and the frame 23 fixed to the driving magnet part 252 along the first direction (optical axis direction) to achieve the optical focusing function. The anti-shake coil part 253 is arranged on the base 22 and opposite to the driving magnet part 252. When the anti-shake coil part 253 generates a magnetic field under current excitation, the driving magnet part 252 and the frame 23 fixed to the driving magnet part 252 move relative to the anti-shake coil part 253 and the base 22 fixed to the anti-shake coil part 253 in a second direction perpendicular to the first direction to achieve the optical image stabilization function. That is, the lens driving assembly 25 is configured to drive the carrier 24 to move relative to the base 22 in a first direction and a second direction perpendicular to the first direction. It should be understood that the focus coil part 251 and the anti-shake coil part 253 can also be combined and referred to as the drive coil part. In other words, the lens driving assembly 25 includes a driving magnet part 252 and a drive coil part arranged opposite to the drive magnet part 252, and the drive coil part includes a focus coil part 251 for a focus function and an anti-shake coil part 253 for an anti-shake function.

[0072] More specifically, in one example, the driving magnet portion 252 includes three driving magnets, namely a first driving magnet 2521, a second driving magnet 2522 and a third driving magnet 2523, the focusing coil portion 251 includes a focusing coil 2511 arranged opposite to the first driving magnet 2521 along the second direction, and the anti-shake coil portion 253 includes three anti-shake coils, namely a first anti-shake coil 2531, a second anti-shake coil 2532 and a third anti-shake coil 2533, which are respectively arranged opposite to the first driving magnet 2521, the second driving magnet 2522 and the third driving magnet 2523 along the first direction, wherein the first anti-shake coil 2531 is arranged opposite to the first driving magnet 2521 along the first direction, the second anti-shake coil 2532 is arranged opposite to the second driving magnet 2522 along the first direction, and the third anti-shake coil 2533 is arranged opposite to the third driving magnet 2523 along the first direction. Further, the second driving magnet 2522 and the third driving magnet 2523 are disposed on both sides of the first driving magnet 2521, and correspondingly, the second anti-shake coil 2532 and the third anti-shake coil 2533 are disposed on both sides of the first anti-shake coil 2531. It should be understood that in other examples of the present application, the number of focus coils, driving magnets, and anti-shake coils may be more or less. For example, in one example, the third driving magnet 2523 and the third anti-shake coil 2533 are not included.

[0073] Next, for the sake of convenience, the side of the lens driving device 20 where the first driving magnet 2521 is disposed is referred to as the first side 51. In the clockwise direction, the four sides of the lens driving device 20 are respectively the first side 51, the second side 52, the third side 53 and the fourth side 54. The focus coil 2511, the first driving magnet 2521 and the first anti-shake coil 2531 are disposed on the first side 51 of the lens driving device 20, the second driving magnet 2522 and the second anti-shake coil 2532 are disposed on the second side 52 of the lens driving device 20, the third driving magnet 2523 and the third anti-shake coil 2533 are disposed on the fourth side 54 of the lens driving device 20, and the third side 53 of the lens driving device 20 is not provided with a driving magnet portion 252, a focus coil portion 251 or an anti-shake coil portion 253. That is, in one example of the present application, the focus coil unit 251 is only provided on one side of the lens driving device 20 , and the anti-shake coil unit 253 and the driving magnet unit 252 are only provided on three sides of the lens driving device 20 .

[0074] Correspondingly, the carrier 24 includes four interconnected carrier side portions, namely a first carrier side portion 241, a second carrier side portion 242, a third carrier side portion 243 and a fourth carrier side portion 244. The first carrier side portion 241, the second carrier side portion 242, the third carrier side portion 243 and the fourth carrier side portion 244 are arranged on the first side 51, the second side 52, the third side 53 and the fourth side 54 of the lens driving device 20 in a clockwise direction.

[0075] The carrier 24 further includes two winding posts 2411 formed on the first carrier side portion 241, and the two winding posts 2411 are arranged at both ends of the top surface of the first carrier side portion 241. The focus coil 2511 is fixed to the outer side surface of the first carrier side portion 241, and the axis direction of the focus coil 2511 is perpendicular to the optical axis. The two lead wires at both ends of the focus coil 2511 are respectively wound on the two winding posts 2411. It should be understood that the outer side surface of the first carrier side portion 241 refers to the side surface of the first carrier side portion 241 away from the optical axis.

[0076] The frame 23 includes four interconnected frame sides, namely a first frame side 231, a second frame side 232, a third frame side 233 and a fourth frame side 234. The first frame side 231, the second frame side 232, the third frame side 233 and the fourth frame side 234 are arranged on the first side 51, the second side 52, the third side 53 and the fourth side 54 of the lens driving device 20 in a clockwise direction, so that the first frame side 231 is relatively arranged on the outer side of the first carrier side 241, the second frame side 232 is relatively arranged on the outer side of the second carrier side 242, the third frame side 233 is relatively arranged on the outer side of the third carrier side 243, and the fourth frame side 234 is relatively arranged on the outer side of the fourth carrier side 244.

[0077] The first driving magnet 2521 is arranged on the first frame side 231, the second driving magnet 2522 is arranged on the second frame side 232, and the third driving magnet 2523 is arranged on the fourth frame side 234. In a specific example, the three driving magnets are respectively arranged in three driving magnet grooves, the first frame side 231 has a first driving magnet groove 2311, the second frame side 232 has a second driving magnet groove 2321, and the fourth frame side 234 has a third driving magnet groove 2341. Among them, the opening of the first driving magnet groove 2311 is at least arranged toward the carrier 24 and the base 22, and the first driving magnet 2521 is fixed in the first driving magnet groove 2311; the opening of the second driving magnet groove 2321 is at least arranged toward the base 22, the second driving magnet 2522 is fixed in the second driving magnet groove 2321, and the third driving magnet 2523 is fixed in the third driving magnet groove 2341. Further, the frame 23 is located on the side of the carrier 24 away from the optical axis, in other words, the carrier 24 is located on the inner side of the frame 23, and the frame 23 is located on the outer side of the carrier 24. Accordingly, the focus coil 2511 is located on the inner side of the first driving magnet 2521, in other words, the focus coil 2511 is located on the side of the first driving magnet 2521 close to the optical axis.

[0078] The base 22 includes a base body 221 and four extension columns 222 extending upward from four corners of the base body 221. The first anti-shake coil 2531 is arranged on the first side of the base body 221, the second anti-shake coil 2532 is arranged on the second side of the base body 221, and the third anti-shake coil 2533 is arranged on the fourth side of the base body 221. Further, the base body 221 is located on the lower side of the frame 23. In other words, the base body 221 is located on the side of the frame 23 close to the photosensitive device 30, that is, the base body 221 is located on the image side of the frame 23. Accordingly, the anti-shake coil part 253 including the first anti-shake coil 2531, the second anti-shake coil 2532 and the third anti-shake coil 2533 is located on the lower side (image side) of the driving magnet part 252 including the first driving magnet 2521, the second driving magnet 2522 and the third driving magnet 2523. Correspondingly, the axial directions of the windings of the first anti-shake coil 2531 , the second anti-shake coil 2532 and the third anti-shake coil 2533 are parallel to the optical axis.

[0079] Here, when the first anti-shake coil 2531 generates a magnetic field under current excitation, the first driving magnet 2521 and the frame 23 are driven to move relative to the first anti-shake coil 2531 and the base 22 along a first anti-shake direction, and the first anti-shake direction is perpendicular to the first direction. When the second anti-shake coil 2532 and the third anti-shake coil 2533 generate a magnetic field under current excitation, the second driving magnet 2522, the third driving magnet 2523 and the frame 23 are driven to move relative to the base 22 along a second anti-shake direction, and the second anti-shake direction is perpendicular to the first anti-shake direction and the first direction. In this way, through the magnetic force between the first anti-shake coil 2531 and the first driving magnet 2521, the magnetic force between the second anti-shake coil 2532 and the second driving magnet 2522, and the magnetic force between the third anti-shake coil 2533 and the third driving magnet 2523, the base 22 is driven to move relative to the frame 23 in any direction perpendicular to the first direction (optical axis direction) to achieve the optical anti-shake function. It should be understood that the first anti-shake direction and the second anti-shake direction are two of the second directions perpendicular to the first direction, and the second direction is also synthesized by the first anti-shake direction and the second anti-shake direction under the action of forces of different magnitudes. For example, when the first anti-shake coil 2531 is not energized, no force is generated between the first anti-shake coil 2531 and the first driving magnet 2521 to drive the frame 23 to move along the first anti-shake direction, and when the second anti-shake coil 2532 and the third anti-shake coil 2533 are energized and a force is generated between the second driving magnet 2522 and the third driving magnet 2523 to drive the frame 23 to move along the second anti-shake direction, the second direction is the same direction as the second anti-shake direction.

[0080] It is worth mentioning that in the technical solution of the present application, the first driving magnet 2521 in the driving magnet part 252 is reused, and the first driving magnet 2521 is used to interact with the focusing coil 2511 in the process of realizing the focusing function, and is also used to interact with the first anti-shake coil 2531 part 253 in the process of realizing the anti-shake function, so that the structural design of the lens driving device 20 is intensive and miniaturized. It is worth mentioning that since the first driving magnet 2521 is shared in optical focusing and optical anti-shake, the first driving magnet 2521 has a larger size in the optical axis direction, that is, in the direction of the optical axis, the size of the first driving magnet 2521 is larger than the size of the second driving magnet 2522 and the size of the third driving magnet 2523. In other words, the bottom surface of the first driving magnet 2521 is flush with the bottom surface of the second driving magnet 2522 and the bottom surface of the third driving magnet 2523, and the top surface of the first driving magnet 2521 is higher than the top surface of the second driving magnet 2522 and the top surface of the third driving magnet 2523. In one example, the second driving magnet 2522 and the third driving magnet 2523 are equal in height.

[0081] It is worth mentioning that since the first driving magnet 2521 needs to be used for both optical focus and optical image stabilization, the first driving magnet 2521 is a multi-pole magnet (e.g., a quadrupole magnet), which can be formed in one step by multi-pole magnetization, or can be formed by fixing multiple bipolar magnets. The second driving magnet 2522 and the third driving magnet 2523 can be multi-pole magnets or bipolar magnets. It should be understood that in the present application, a bipolar magnet refers to a magnet that includes only one N pole and one S pole, and a multi-pole magnet refers to a magnet that includes two or more N poles and two or more S poles.

[0082] Furthermore, in an example of the present application, the frame 23 may also include a first magnetic conductive component, a second magnetic conductive component and a third magnetic conductive component (not shown in the drawings), wherein the first magnetic conductive component, the second magnetic conductive component and the third magnetic conductive component may be respectively fixed to the first frame side 231, the second frame side 232 and the third frame side 233 by processes such as insert molding. Specifically, the first magnetic conductive member is disposed on the side of the first driving magnet 2521 away from the focus coil 2511 and the side of the first anti-shake coil 2531, so as to enhance the magnetic field strength of the first driving magnet 2521 facing the focus coil 2511 and the side facing the first anti-shake coil 2531; the second magnetic conductive member is disposed on the side of the second driving magnet 2522 away from the second anti-shake coil 2532, so as to enhance the magnetic field strength of the second driving magnet 2522 facing the second anti-shake coil 2532; the third magnetic conductive member is disposed on the side of the third driving magnet 2523 away from the third anti-shake coil 2533, so as to enhance the magnetic field strength of the third driving magnet 2523 facing the third anti-shake coil 2533. The second magnetic conductive member and the third magnetic conductive member are disposed on both sides of the first magnetic conductive member, and the second magnetic conductive member and the third magnetic conductive member can be extended integrally with both ends of the first magnetic conductive member respectively. It should be understood that the three magnetic conductive members are made of a material having magnetic conductive properties (such as stainless steel). The three magnetic conductive members are arranged in the frame 23 , which can also enhance the structural strength of the frame 23 .

[0083] Further, in order to keep the carrier 24 movable in the frame 23 with a small friction resistance, the focus support part 262 is arranged between the carrier 24 and the frame 23 along the first direction, and the carrier 24 is supported on the frame 23 by the focus support part 262. The focus support part 262 provides an air gap of a fixed size between the carrier 24 and the frame 23, so that when the carrier 24 moves relative to the frame 23 in the first direction, the contact and friction between the carrier 24 and the frame 23 are avoided, and the carrier 24 is movably supported on the frame 23. In the process of the carrier 24 moving relative to the frame 23, the focus support part 262 can always support the carrier 24, and the focus support part 262 is not easy to deform, so that the carrier 24 can move smoothly. Specifically, the focus support part 262 is arranged between the first carrier side part 241 and the first frame side part 231.

[0084] In one example, the focus support part 262 is implemented as a ball bearing, and includes at least three focus balls 2621 , which are clamped between the first carrier side portion 241 of the carrier 24 and the first frame side portion 231 of the frame 23 . Specifically, two inner support grooves 2412 are formed on the side of the first carrier side portion 241 facing the first frame side portion 231, and the two inner support grooves 2412 are located on both sides of the first driving magnet 2521. Two outer support grooves 2312 are formed on the side of the first frame side portion 231 facing the first carrier side portion 241, and the two outer support grooves 2312 are located on both sides of the focusing coil 2511. The positions of the two inner support grooves 2412 and the two outer support grooves 2312 are respectively arranged correspondingly, and at least three focus balls 2621 are arranged in the two inner support grooves 2412 and the two outer support grooves 2312, and there are at least three contact points between the focus balls 2621 and the inner support grooves 2412 and the outer support grooves 2312. In a specific example, the number of focus balls 2621 is implemented as four, wherein two focus balls 2621 are disposed between one group of inner support grooves 2412 and outer support grooves 2312 , and the other two focus balls 2621 are disposed between another group of inner support grooves 2412 and outer support grooves 2312 .

[0085] More specifically, a first ball baffle is formed on the top surface of one of the inner supporting groove 2412 and the outer supporting groove 2312, and a second ball baffle is formed on the bottom surface of the other, and the first ball baffle and the second ball baffle are arranged to prevent the focus ball 2621 from being separated from the inner supporting groove 2412 and the outer supporting groove 2312. Since the carrier 24 moves relative to the frame 23, the height dimension of the carrier 24 is smaller than the height dimension of the frame 23, the top surface of the inner supporting groove 2412 is formed with a first ball baffle 2413, and the bottom surface of the outer supporting groove 2312 is formed with a second ball baffle 2313, so that the focus ball 2621 is restricted between the inner supporting groove 2412 and the outer supporting groove 2312.

[0086] It should be understood that in the present application, the focus support part 262 can also be implemented as other structures. For example, the focus support part 262 can be implemented as two guide rods, and the two guide rods are clamped between the two inner support grooves 2412 of the first carrier side part 241 and the two outer support grooves 2312 of the first frame side part 231; the focus support part 262 can also be implemented as two sets of sliders, and the two sets of sliders are fixed to the first carrier side part 241 or the first frame side part 231, so as to slide in contact with the outer support groove 2312 of the first frame side part 231 or the inner support groove 2412 of the first carrier side part 241, and here, the slider can be integrally formed with the first carrier side part 241 or the first frame side part 231, or can be formed separately and then fixed by glue.

[0087] In order to ensure that the carrier 24 can be supported on the frame 23 through the focus support part 262, the focus magnetic attraction part 261 is fixed to the first carrier side part 241 of the carrier 24 and is arranged opposite to the first driving magnet 2521. A magnetic attraction force is generated between the focus magnetic attraction part 261 and the first driving magnet 2521 to clamp the focus support part 262 between the frame 23 and the carrier 24. Specifically, the focus magnetic attraction part 261 includes a focus magnetic attraction member 2611, and the focus magnetic attraction member 2611 is made of a material suitable for generating a magnetic attraction force with a magnet. For example, the focus magnetic attraction member 2611 can be made of a material that can be attracted by a magnet, such as iron, nickel, cobalt, etc., and the focus magnetic attraction member 2611 can also be directly made of a magnet.

[0088] The focusing magnetic member 2611 is disposed on a side of the focusing coil 2511 away from the first driving magnet 2521, and the focusing coil 2511 is disposed between the focusing magnetic member 2611 and the first driving magnet 2521. The focusing magnetic member 2611 can be embedded in the first carrier side portion 241 by an insert molding process, or fixed to the first carrier side portion 241 by gluing or welding.

[0089] Similarly, in order to keep the frame 23 movable in the base 22 with a small friction resistance, the anti-shake support part 264 is arranged between the frame 23 and the base 22 along the second direction, and the frame 23 is supported on the base 22 by the anti-shake support part 264. The anti-shake support part 264 provides an air gap of a fixed size between the frame 23 and the carrier 24, so that when the frame 23 moves relative to the carrier 24 in the second direction, contact and friction between the frame 23 and the base 22 are avoided, and the frame 23 is movably supported on the base 22. In the process of the frame 23 moving relative to the base 22, the anti-shake support part 264 can always support the frame 23, and the anti-shake support part 264 is not easy to deform, so that the frame 23 can move smoothly. Specifically, the anti-shake support part 264 is arranged between the bottom surface of the frame 23 and the top surface of the base body 221.

[0090] In one example, the anti-shake support part 264 is implemented as a ball. The anti-shake support part 264 includes at least three anti-shake balls 2641, and the at least three anti-shake balls 2641 are clamped between the frame 23 and the base body 221. Correspondingly, at least three upper support grooves are formed on the bottom surface of the frame 23 facing the base 22, and at least three lower support grooves are formed on the top surface of the base body 221 facing the carrier 24. The at least three upper support grooves and the at least three lower support grooves correspond to each other, and the at least three anti-shake balls 2641 are respectively arranged in the at least three upper support grooves and the at least three lower support grooves.

[0091] In a specific example, the number of anti-shake balls 2641 is implemented as three, the anti-shake support part 264 includes three anti-shake balls 2641, the bottom surface of the frame 23 is formed with three upper support grooves, namely, the first upper support groove 2332, the second upper support groove 2323 and the third upper support groove 2343, and the top surface of the base body 221 is formed with three lower support grooves, namely, the first lower support groove 223, the second lower support groove 224 and the third lower support groove 225. The first upper support groove 2332 and the first lower support groove 223 are arranged correspondingly, the second upper support groove 2323 and the second lower support groove 224 are arranged correspondingly, and the third upper support groove 2343 and the third lower support groove 225 are arranged correspondingly, and the three anti-shake balls 2641 are respectively arranged between the three upper support grooves and the three lower support grooves. The three anti-shake balls 2641 form a support plane to support the frame 23. In order to improve the stability of the support of the frame 23, the distance between the three anti-shake balls 2641 is set larger so that a larger support plane can be provided. Specifically, considering that no driving magnet is provided on the third frame side 233, the first upper support groove 2332 is provided in the middle of the bottom surface of the third frame side 233, the second upper support groove 2323 is provided on the side of the bottom surface of the second frame side 232 close to the first frame side 231, the third upper support groove 2343 is provided on the side of the bottom surface of the fourth frame side 234 close to the first frame side 231, and three anti-shake balls 2641 are provided in the shape of a roughly isosceles triangle between the frame 23 and the base body 221.

[0092] It should be understood that in the present application, the anti-shake support part 264 can also be implemented as other structures. For example, the anti-shake support part 264 can be implemented as at least three sliders, and at least three sliders are fixed to the bottom surface of the frame 23 or the top surface of the base body 221, so as to slide in contact with the base 22 or the frame 23. Here, the sliders can be integrally formed with the frame 23 or the base 22, or they can be formed separately and then fixed by glue.

[0093] To ensure that the frame 23 can be supported on the base body 221 of the base 22 through the anti-shake support part 264, the anti-shake magnetic suction part 263 is fixed to the base body 221 and arranged opposite to the driving magnet part 252. The anti-shake magnetic suction part 263 and the driving magnet part 252 are mutually attracted to generate magnetic attraction so that the anti-shake support part 264 is clamped between the frame 23 and the base 22. Specifically, the anti-shake magnetic suction part 263 includes four anti-shake magnetic suction parts, namely, a first anti-shake magnetic suction part 2631, a second anti-shake magnetic suction part 2632, a third anti-shake magnetic suction part 2633 and a fourth anti-shake magnetic suction part 2634. The four anti-shake magnetic suction parts are made of a material suitable for generating magnetic attraction with a magnet. For example, the four anti-shake magnetic suction parts can be made of materials that can be attracted by a magnet, such as iron, nickel, cobalt, etc., or the four anti-shake magnetic suction parts can be directly made of a magnet.

[0094] The four anti-shake magnetic parts are respectively arranged on the side of the anti-shake coil part 253 away from the driving magnet part 252, and the anti-shake coil part 253 is arranged between the driving magnet part 252 and the four anti-shake magnetic parts. Specifically, the four anti-shake magnetic parts are respectively arranged at the four corners of the base body 221, so that the frame 23 can be balanced and stably supported in the base 22. Among them, the four anti-shake magnetic parts can be embedded in the base body 221 through the insert molding process, and can also be fixed to the base body 221 by gluing or welding.

[0095] It should be understood that the number of anti-shake magnetic components can also be three or more. For example, when the anti-shake magnetic components are implemented as three, the three anti-shake magnetic components are respectively arranged on the side of the first anti-shake coil 2531, the second anti-shake coil 2532 and the third anti-shake coil 2533 away from the first driving magnet 2521, the second driving magnet 2522 and the third driving magnet 2523.

[0096] It is worth mentioning that when designing the anti-shake support part 264 and the anti-shake magnetic part 263, it is necessary to consider that the setting of the anti-shake support part 264 and the anti-shake magnetic part 263 may cause the frame 23 to tilt relative to the base 22. When the magnetic attraction force action point of the magnetic attraction force between the anti-shake magnetic part 263 and the driving magnet part 252 is located outside the support plane formed by at least three anti-shake balls 2641 included in the anti-shake support part 264, the frame 23 has the risk of tilting relative to the base 22 under the action of the magnetic attraction force. However, even if the magnetic attraction force action point of the magnetic attraction force between the anti-shake magnetic part 263 and the driving magnet part 252 is located within the support plane formed by at least three anti-shake balls 2641 included in the anti-shake support part 264, it is necessary to further consider that when the camera module 1 is in a tilted state, the frame 23 may tilt relative to the base 22 due to the gravity of the frame 23 and other camera module components supported by the frame 23. Specifically, when the gravity direction of the camera module 1 is not consistent with (parallel to) the optical axis direction of the camera module 1 (i.e., when the gravity direction of the camera module 1 intersects the optical axis direction of the camera module 1 at a certain angle), the gravity component of the frame 23 and other camera module components supported by the frame 23 in the direction perpendicular to the optical axis may cause the frame 23 to rotate relative to the base 22. In other words, if the magnetic attraction between the anti-shake magnetic attraction portion 263 and the driving magnet portion 252 has a small effect on suppressing the rotation of the frame 23, it is difficult to avoid the tilt problem of the frame 23. Therefore, in order to avoid the occurrence of this problem, the design of the anti-shake support portion 264 and the anti-shake magnetic attraction portion 263 can be further optimized.

[0097] It should be understood that the anti-shake magnetic suction part 263 includes a plurality of anti-shake magnetic suction parts that are dispersedly arranged. Accordingly, the magnetic suction force between the anti-shake magnetic suction part 263 and the driving magnet part 252 refers to the combined force of the magnetic suction forces of the plurality of anti-shake magnetic suction parts, and the magnetic suction force application point of the magnetic suction force between the anti-shake magnetic suction part 263 and the driving magnet part 252 refers to the combined force application point of the magnetic suction force of the combined force of the magnetic suction forces of the plurality of anti-shake magnetic suction parts. Also, other camera module components supported by the frame 23 may include the driving magnet part 252 fixed to the frame 23, the focus support part 262, the carrier 24, the focus magnetic suction part 261, the optical lens 10, the aperture device 40, a portion of the driving conductive component 27, and the focus position sensing component 28.

[0098] Specifically, since the frame 23 is supported on the base 22 through at least three anti-shake balls 2641 included in the anti-shake support portion 264, any two of the at least three anti-shake balls 2641 can form a bearing axis for the frame 23 to rotate relative to the base 22, and thus the frame 23 may rotate relative to the base 22. When the magnetic attraction between the anti-shake magnetic attraction portion 263 and the driving magnet portion 252 acts on the bearing axis, the distance between the magnetic attraction and the bearing axis is 0, and it is difficult to produce the function of inhibiting the rotation of the frame 23. In other words, when the point of action of the magnetic attraction force is located on the supporting axis, the distance between the point of action of the magnetic attraction force and the supporting axis is 0, and the torque of the magnetic attraction force on the frame 23 is 0. The center of gravity of the frame 23 and other camera module components supported by the frame 23 are located on the object side of the supporting axis, and the distance between the point of action of the gravity force and the supporting axis is greater than 0. The torque of the gravity of the frame 23 and other camera module components supported by the frame 23 on the frame 23 is greater than 0. Therefore, when the gravity direction of the camera module 1 is not consistent with the optical axis direction of the camera module 1, the frame 23 will inevitably rotate relative to the base 22, resulting in a tilt problem.

[0099] However, when the magnetic attraction between the anti-shake magnetic attraction part 263 and the driving magnet part 252 deviates from the bearing axis, but the magnetic attraction point of the magnetic attraction is closer to the bearing axis, or when the magnetic attraction is small, the moment of the magnetic attraction on the frame 23 is also small. Therefore, the moment of the magnetic attraction on the frame 23 is smaller than the moment of the gravity of the frame 23 and other camera module components supported by the frame 23 on the frame 23, and the frame 23 may still rotate relative to the base 22.

[0100] In summary, when the point of action of the magnetic attraction force between the anti-shake magnetic part 263 and the driving magnet part 252 is located on the line connecting any two of the at least three anti-shake balls 2641, the torque of the magnetic attraction force on the frame 23 is 0. When the gravity of the frame 23 and other camera module components supported by the frame 23 intersects with the optical axis of the camera module at a certain angle, under the influence of gravity, the frame 23 may rotate relative to the base 22. Therefore, the point of action of the magnetic attraction force cannot be located on the line connecting any two of the at least three anti-shake balls 2641; secondly, even if the point of action of the magnetic attraction force is not on the line connecting any two of the at least three anti-shake balls 2641, the magnetic attraction force is too small or the vertical distance between the point of action of the magnetic attraction force and the line connecting any two balls is too short, which will make the torque of the magnetic attraction force on the frame 23 too small, and it is difficult to counteract the rotational effect of gravity. Therefore, the torque of the magnetic attraction force cannot be too small.

[0101] Accordingly, in order to reduce the risk of the frame 23 tilting relative to the base 22, the magnetic attraction force application point of the magnetic attraction force between the anti-shake magnetic attraction part 263 and the driving magnet part 252 is set in the support plane of the anti-shake support part 264, and the magnetic attraction force application point of the magnetic attraction force between the anti-shake magnetic attraction part 263 and the driving magnet part 252 is not on the line connecting any two anti-shake balls 2641 in the anti-shake support part 264 (at least three anti-shake balls 2641), and the magnetic attraction force application point deviates from the line connecting any two anti-shake balls 2641. Further, with any two anti-shake balls 2641 in the anti-shake support part 264 (at least three anti-shake balls 2641) as the bearing axis, the moment of the magnetic attraction force between the anti-shake magnetic attraction part 263 and the driving magnet part 252 on the frame is greater than the moment of the gravity of the frame 23 and other camera module components supported by the frame 23 on the frame 23. In this regard, the position of the magnetic attraction point of the magnetic attraction force generated by the anti-shake magnetic attraction part 263 can be changed by adjusting the direction or magnitude of the magnetic attraction forces generated by the multiple anti-shake magnetic suction parts in the anti-shake magnetic suction part 263, or the risk of the frame 23 tilting relative to the base 22 can be reduced by adjusting the positions of at least three anti-shake balls 2641 included in the anti-shake support part 264. Among them, adjusting the direction or magnitude of the magnetic attraction forces generated by the multiple anti-shake magnetic suction parts in the anti-shake magnetic suction part 263 can be achieved by changing the position or size of each anti-shake magnetic suction part. In one example, the multiple anti-shake magnetic suction parts in the anti-shake magnetic suction part 263 are arranged asymmetrically.

[0102] It should be understood that a large number of anti-shake balls 2641 can provide more support points for the frame 23. However, due to the problem of manufacturing tolerance, it is difficult to keep the sizes of multiple anti-shake balls 2641 completely consistent. In actual products, only three anti-shake balls 2641 that are not in a straight line form a support plane to support the frame 23. Therefore, the risk that the magnetic attraction point of the magnetic attraction between the anti-shake magnetic attraction part 263 and the driving magnet part 252 is close to the line connecting any two anti-shake balls 2641 can be reduced by reducing the number of anti-shake balls 2641. For example, the number of anti-shake balls 2641 in the anti-shake support part 264 can be set to three. However, due to the reduction in the number of anti-shake balls 2641, the support area of ​​the anti-shake support part 264 for the frame is reduced as a whole. When the camera module 1 is disturbed by external force and the frame 23 is tilted relative to the base 22, the frame 23 has a larger rotatable angle relative to the base 22, which increases the risk of damage to the frame 23 and other camera module components supported by the frame 23. Therefore, in one example, two support portions smaller than the anti-shake ball 2641 may be further provided on both sides of the anti-shake ball 2641 provided between the third frame side portion 233 and the base 22, so as to prevent the frame 23 from rotating at a large angle relative to the base 22. The two support portions may be fixed to the third frame side portion 233 or the base 22, or the two support portions may be movably provided between the third frame side portion 233 or the base 22.

[0103] In another example of the present application, at least three anti-shake balls 2641 are only arranged on three sides of the lens driving device 20. For example, when the anti-shake support portion 264 includes four anti-shake balls 2641, two anti-shake balls 2641 are arranged between the second frame side portion 232 and the base 22 and between the fourth frame side portion 234 and the base 22, and the other two anti-shake balls 2641 are arranged between the third frame side portion 233 and the base 22, so that the four anti-shake balls 2641 are arranged in a trapezoidal shape between the frame 23 and the base 22. Preferably, the four anti-shake balls 2641 are arranged in an isosceles trapezoidal shape between the frame 23 and the base 22.

[0104] More specifically, refer to Fig.10 As shown in the figure, A, B, C, and D respectively indicate four anti-shake balls arranged in an isosceles trapezoid shape, and the four anti-shake balls A, B, C, and D form a support plane of the anti-shake support part 264. Point O is the optical axis, and point M is the magnetic attraction point of the magnetic attraction between the anti-shake magnetic attraction part 263 and the driving magnet part 252. The magnetic attraction point M is located in the support plane of the anti-shake support part 264, and the vertical distance L1 between the magnetic attraction point M and the bearing axis formed by the anti-shake balls A and C is the shortest. Accordingly, in Fig.10In the example shown, with the anti-shake balls A and C as the bearing axes, the torque exerted on the frame by the magnetic attraction force between the anti-shake magnetic attraction part 263 and the driving magnet part 252 should be greater than the torque exerted on the frame 23 by the gravity of the frame 23 and other camera module components supported by the frame 23.

[0105] Further, the position sensing component is used to obtain the position information of the carrier 24, thereby obtaining the position information of the optical lens 10 fixed to the carrier 24. Accordingly, the position sensing component includes a focus position sensing component 28 for obtaining the position change information of the carrier 24 in the first direction and an anti-shake position sensing component 29 for obtaining the position change information of the frame 23 in the second direction.

[0106] Further, it should be understood that when the anti-shake support portion 264 is implemented as at least three anti-shake sliders, the same problems and solutions also exist, and this application will not further elaborate on them.

[0107] Specifically, refer to Figure 2 and Figure 5 As shown, the focus position sensing component 28 includes a focus position sensing element 281 and a focus position sensing magnet 282, and the focus position sensing element 281 and the focus position sensing magnet 282 are arranged on the third side of the lens driving device 20 along the first direction (optical axis direction), wherein the focus position sensing element 281 is arranged above the focus position sensing magnet 282. Specifically, the focus position sensing component 28 includes a focus position sensing element 281 and a focus position sensing magnet 282 which are relatively arranged along a first direction. The focus position sensing element 281 is fixed to the carrier 24 and electrically connected to the driving conductive component 27. The focus position sensing magnet 282 is fixed to the frame 23. When the carrier 24 moves in the first direction relative to the frame 23, the focus position sensing element 281 moves away from the focus position sensing magnet 282 in the first direction, so that the magnetic field of the focus position sensing magnet 282 acting on the focus position sensing element 281 changes, and then the focus position sensing element 281 can obtain the change in position information of the carrier 24 relative to the frame 23.

[0108] More specifically, the third carrier side portion 243 of the carrier 24 has a first side extension portion 2431 extending outward, the focus position sensing element 281 is fixed to the first side extension portion 2431, and the third frame side portion 233 of the frame 23 has a sensing magnet groove 2331 opening toward the focus position sensing element 281, and the focus position sensing magnet 282 is fixed in the sensing magnet groove 2331, so that the focus position sensing element 281 and the focus position sensing magnet 282 are arranged relative to each other along the first direction. It should be understood that the focus position sensing element 281 can be arranged above the first side extension portion 2431, and the focus position sensing element 281 can also be arranged below the first side extension portion 2431 or embedded in the first side extension portion 2431. Here, extending outward refers to extending in a direction away from the optical axis. It is worth mentioning that in the technical solution of the present application, when viewed along the first direction, the focus position sensing element 281 and the focus position sensing magnet 282 at least partially overlap, that is, in the first direction, the projection of the focus position sensing element 281 at least partially falls within the projection of the focus position sensing magnet 282; when viewed along the second direction perpendicular to the first direction, the focus position sensing element 281 and the focus position sensing magnet 282 do not overlap. In a specific example, when viewed from the first direction, the projection of the focus position sensing element 281 completely falls within the projection of the focus position sensing magnet 282, so that the focus position sensing element 281 can have a better detection effect.

[0109] It is worth mentioning that in the technical solution of the present application, no other driving magnets are arranged on the opposite side of the first driving magnet 2521, and the focus position sensing magnet 282 is arranged on the opposite side of the first driving magnet 2521. Accordingly, the focus position sensing assembly 28 and the driving magnet portion 252 are arranged on different sides of the lens driving device 20, and the focus position sensing magnet 282 is arranged on the third side 53 of the lens driving device 20 where the driving magnet portion 252 is not arranged. Therefore, in the first direction, the arrangement of the focus position sensing magnet 282 is not limited to the driving magnet portion 252. Accordingly, the bottom surface (image side) of the focus position sensing magnet 282 can be lower than the top surface (object side) of all the driving magnets in the driving magnet portion 252. In other words, the bottom surface of the focus position sensing magnet 282 is lower than the top surface of the second driving magnet 2522 and the third driving magnet 2523.

[0110] It is worth mentioning that, in a specific example, viewed along the first direction, one of the anti-shake balls 2641 and the focus position sensing magnet 282 at least partially overlap. The anti-shake ball 2641 is actually arranged on the third frame side 233, that is, viewed along the first direction, the anti-shake ball 2641 and the focus position sensing magnet 282 arranged on the third frame side 233 at least partially overlap.

[0111] Reference Figure 2 and Figure 3 As shown, the anti-shake position sensing component 29 includes a first anti-shake position sensing element 291 and a second anti-shake position sensing element 292. The first anti-shake position sensing element 291 is disposed below the first driving magnet 2521 to sense the magnetic field change information of the first driving magnet 2521, and the second anti-shake position sensing element 292 is disposed below the second driving magnet 2522 or the third driving magnet 2523 to sense the magnetic field change information of the second driving magnet 2522 or the third driving magnet 2523, thereby obtaining the position change information of the frame 23 in the second direction.

[0112] Specifically, the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292 are respectively fixed to two adjacent sides of the base body 221 and are respectively electrically connected to the driving conductive component 27. Among them, the first anti-shake position sensing element 291 is arranged below the first anti-shake coil 2531, and the second anti-shake position sensing element 292 is arranged below the second anti-shake coil 2532 or the third anti-shake coil 2533. For example, a groove is respectively provided at the position where the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292 are arranged on the base body 221, and the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292 are respectively accommodated in the two grooves.

[0113] It should be understood that in the technical solution of the present application, any one of the focus position sensing element 281, the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292 can be implemented as an element that can sense magnetic fields, such as a Hall element, a driver IC, or a TMR.

[0114] Furthermore, the driving conductive component 27 is used to electrically connect the lens driving component 25 and the position sensing component in the lens driving device 20 and to electrically connect the lens driving device 20 with the photosensitive device 30, so that the lens driving device 20 can obtain driving power and control signals through the photosensitive device 30, and the lens driving component 25 can obtain the control signal of the position sensing component. And, when the camera module 1 further includes an aperture device 40, the driving conductive component 27 is also used to electrically connect to the aperture device 40, and the aperture device 40 is also electrically connected to the photosensitive device 30 through the driving conductive component 27 disposed in the lens driving device 20 and further electrically connected to an external electronic device. Further combined Figure 7 and Figure 8 As shown, the driving conductive component 27 includes a carrier conductive portion 271 disposed on the carrier 24 , a base conductive portion 273 disposed on the base 22 , and a conductive connecting portion 272 electrically connecting the carrier conductive portion 271 and the base conductive portion 273 .

[0115] The carrier conductive part 271 includes a carrier circuit board 2711 and two coil conductive parts, namely, a first coil conductive part 2712 and a second coil conductive part 2713. The carrier circuit board 2711 is disposed on the first side extension part 2431, the focus position sensing element 281 is fixed and electrically connected to the carrier circuit board 2711, and the two coil conductive parts electrically connect the focus coil 2511 and the carrier circuit board 2711. Specifically, the carrier circuit board 2711 can be fixed on the top of the first side extension part 2431 by, for example, bonding with an adhesive medium, and a plurality of circuit board pads are provided on the carrier circuit board 2711 for electrical connection with other components; the two coil conductive parts can be fixed to the carrier 24 by insert molding, the first coil conductive part 2712 is located on the second side of the carrier 24 and extends from the first side of the carrier 24 to the third side, and the second coil conductive part 2713 is located on the fourth side of the carrier 24 and extends from the first side of the carrier 24 to the third side. The two connecting ends of the first coil conductive member 2712 are respectively exposed on the top surface of the carrier 24 on the first side and the third side of the carrier 24, and the two connecting ends of the second coil conductive member 2713 are respectively exposed on the top surface of the carrier 24 on the first side and the third side of the carrier 24, so that the connecting ends of the first coil conductive member 2712 and the second coil conductive member 2713 located on the first side are respectively electrically connected to the two lead-out wires of the focusing coil 2511 wound on the two winding poles 2411, and the connecting ends of the first coil conductive member 2712 and the second coil conductive member 2713 located on the third side are respectively electrically connected to the two circuit board pads of the carrier circuit board 2711, so that the focusing coil 2511 is electrically connected to the focusing position sensing element 281, and then the focusing position sensing element 281 can adjust the current direction and / or current magnitude in the focusing coil 2511 to control the movement of the carrier 24.

[0116] The base conductive portion 273 includes a plurality of base conductive parts 2731 . The base conductive portion 273 is fixed to the base 22 by insert molding to provide a base 22 with a conductive function. Only a portion of the base conductive portion 273 is wrapped by the base 22, and the portion of the base conductive portion 273 extending toward the image side and protruding from the base 22 forms a plurality of pins, which are used to be electrically connected to the chip circuit board 312 of the photosensitive device 30; the portion of the base conductive portion 273 exposed to the base 22 facing the object side forms a plurality of base pads, and the first anti-shake position sensing element 291, the second anti-shake position sensing element 292, the first anti-shake coil 2531, the second anti-shake coil 2532 and the third anti-shake coil 2533 are electrically connected to the plurality of base pads, respectively, so that the anti-shake coil portion 253 is electrically connected to the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292, and then the first anti-shake position sensing element 291 and the second anti-shake position sensing element 292 can adjust the current direction and / or current magnitude in the anti-shake coil portion 253 to control the movement of the frame 23. It should be understood that the first anti-shake coil 2531 , the second anti-shake coil 2532 and the third anti-shake coil 2533 of the anti-shake coil portion 253 are electrically connected to the base conductive portion 273 .

[0117] It is worth mentioning that, since at least part of the base conductive part 273 is also located below the driving magnet part 252, in order to avoid the base conductive part 273 from having an adverse effect on the magnetic attraction function of the anti-shake magnetic attraction part 263, the base conductive part 273 and the anti-shake magnetic attraction part 263 are made of different materials, and the base conductive part 273 is made of non-magnetic material to avoid the generation of magnetic attraction between the base conductive part 273 and the driving magnet part 252. Further, the anti-shake magnetic attraction part 263 and the lateral extension part of the base conductive part 273 have a certain height difference in the base 22 to reduce the probability of interference between the two and avoid the anti-shake magnetic attraction part 263 from having an adverse effect on the conductive function of the base conductive part 273. For example, in one example, the anti-shake magnetic attraction part 263 is higher than the lateral extension part of the base conductive part 273, so that the space in the base 22 can be fully utilized and the distance between the anti-shake magnetic attraction part 263 and the driving magnet part 252 can be closer.

[0118] The conductive connection part 272 is used to electrically connect the carrier conductive part 271 and the base conductive part 273, so as to electrically connect the focus coil 2511 and the focus position sensing element 281 with the photosensitive device 30. The conductive connection part 272 includes four electrical connectors: a first electrical connector 2721, a second electrical connector 2722, a third electrical connector 2723 and a fourth electrical connector 2724. The first electrical connector 2721, the second electrical connector 2722, the third electrical connector 2723 and the fourth electrical connector 2724 are electrically connected to the base conductive part 273 and the carrier circuit board 2711, respectively. Specifically, the first electrical connector 2721 includes a first external fixing end 27211, a first connecting wire 27212 and a first internal fixing end 27213, and the first connecting wire 27212 electrically connects the first external fixing end 27211 and the first internal fixing end 27213; the second electrical connector 2722 includes a second external fixing end 27221, a second connecting wire 27222 and a second internal fixing end 27223, and the second connecting wire 27222 electrically connects the second external fixing end 27221 and the second internal fixing end 2722 3; the third electrical connector 2723 includes a third external fixing end 27231, a third connecting wire 27232 and a third internal fixing end 27233, the third connecting wire 27232 electrically connects the third external fixing end 27231 and the third internal fixing end 27233; the fourth electrical connector 2724 includes a fourth external fixing end 27241, a fourth connecting wire 27242 and a fourth internal fixing end 27243, the fourth connecting wire 27242 electrically connects the fourth external fixing end 27241 and the fourth internal fixing end 27243. Among them, the first outer fixing end 27211, the second outer fixing end 27221, the third outer fixing end 27231 and the fourth outer fixing end 27241 are respectively fixed to the object side of the base 22, and the first inner fixing end 27213, the second inner fixing end 27223, the third inner fixing end 27233 and the fourth inner fixing end 27243 are respectively fixed to the object side of the carrier 24, thereby realizing the physical connection between the carrier 24 and the base 22, and then realizing the circuit conduction between the two. It should be understood that the four inner fixing ends and the four outer fixing ends can be fixed to the carrier 24 and the base 22 respectively by bonding with an adhesive medium or by hot riveting.

[0119] It is worth mentioning that, through the conduction of the conductive connection part 272, the carrier conductive part 271 and the base conductive part 273 are electrically connected across the frame 23, and the focus position sensing element 281 is arranged on the carrier 24 instead of the frame 23, thereby avoiding the need to set a circuit for the frame 23, thereby simplifying the overall structure of the lens driving device 20 and avoiding the increase in resistance caused by the setting of the circuit during the movement of the frame 23. In other words, in the technical solution of the present application, the frame 23 does not have an electrical function and cannot conduct electricity.

[0120] Specifically, four of the plurality of base conductive members 2731 included in the base conductive portion 273 extend upward along the four extension columns 222 at the four corners of the base body 221, and are exposed from the top surfaces of the four extension columns 222. The first outer fixed end 27211, the second outer fixed end 27221, the third outer fixed end 27231 and the fourth outer fixed end 27241 of the four electrical connectors are respectively fixed to the four extension columns 222 and are respectively electrically connected to the four base conductive members 2731. It should be understood that in the present application, the four base conductive members 2731 respectively extend upward along the four extension columns 222 in a manner of being respectively embedded in the four extension columns 222, or in a manner of being respectively attached to the surfaces of the four extension columns 222.

[0121] The second carrier side portion 242 of the carrier 24 has a second side extension portion 2421 extending outward, and the fourth carrier side portion 244 of the carrier 24 has a third side extension portion 2441 extending outward. Here, extending outward refers to extending in a direction away from the optical axis. Correspondingly, the first inner fixed end 27213 is fixed to the second side extension 2421 and electrically connected to the carrier circuit board 2711, for example, the first inner fixed end 27213 can be electrically connected to a circuit pad on the carrier circuit board 2711; the second inner fixed end 27223 is fixed to the first side extension 2431 and electrically connected to the carrier circuit board 2711, for example, the second inner fixed end 27223 can be electrically connected to a circuit pad on the carrier circuit board 2711; the third inner fixed end 27233 is fixed to the first side extension 2431 and electrically connected to the carrier circuit board 2711, for example, the third inner fixed end 27233 can be electrically connected to a circuit pad on the carrier circuit board 2711; the fourth inner fixed end 27243 is fixed to the third side extension 2441 and electrically connected to the carrier circuit board 2711, for example, the fourth inner fixed end 27243 can be electrically connected to a circuit pad on the carrier circuit board 2711. It should be understood that, since the four electrical connectors are electrically connected to the carrier circuit board 2711 located on the third side, at least part of the first inner fixed end 27213, the second inner fixed end 27223, the third inner fixed end 27233 and the fourth inner fixed end 27243 of the four electrical connectors are located on the third side for electrical connection with the four circuit pads on the carrier circuit board 2711. Among them, the second inner fixed end 27223 and the third inner fixed end 27233 are fixed to the third side, part of the first inner fixed end 27213 extends to the third side, and part of the fourth inner fixed end 27243 extends to the third side. Accordingly, at least six circuit pads are provided on the carrier circuit board 2711, four of which are used to be electrically connected to the conductive connection part 272, and two of which are used to be electrically connected to the focus coil part 251.

[0122] Accordingly, since the first electrical connector 2721, the second electrical connector 2722, the third electrical connector 2723 and the fourth electrical connector 2724 are only used for conducting electricity, the elastic coefficient (K value) of the first connecting wire 27212, the second connecting wire 27222, the third connecting wire 27232 and the fourth connecting wire 27242 is relatively low, so that the existence of the first electrical connector 2721, the second electrical connector 2722, the third electrical connector 2723 and the fourth electrical connector 2724 will not cause a certain resistance to the movement of the carrier 24 relative to the frame 23 in the first direction. In one example, the first connecting wire 27212, the second connecting wire 27222, the third connecting wire 27232 and the fourth connecting wire 27242 extend in a horizontal plane perpendicular to the first direction, respectively, so as to increase the length of the first connecting wire 27212, the second connecting wire 27222, the third connecting wire 27232 and the fourth connecting wire 27242 in a limited space. In a specific example, the first connecting wire 27212 , the second connecting wire 27222 , the third connecting wire 27232 , and the fourth connecting wire 27242 extend along two vertical directions in a horizontal plane perpendicular to the first direction, respectively.

[0123] In order to prevent the carrier 24 from moving beyond a preset stroke during the movement, the carrier 24 has four carrier limiting protrusions 245 extending from the four corners of the carrier 24 toward the object side, so that the stroke of the carrier 24 moving toward the object side in the first direction is limited by the collision between the four carrier limiting protrusions 245 and the cover 21. Preferably, the top surface heights of the four carrier limiting protrusions 245 are the same. Further, viewed along the first direction, the first side extension 2431, the second side extension 2421, and the third side extension 2441 overlap with the frame 23 at least partially, in other words, the first side extension 2431, the second side extension 2421, and the third side extension 2441 are at least partially located on the object side of the frame 23, so that the stroke of the carrier 24 moving toward the image side in the first direction is limited by the collision between the first side extension 2431, the second side extension 2421, and the third side extension 2441 and the frame 23.

[0124] Similarly, to prevent the frame 23 from falling off relative to the base 22, the frame 23 has two frame limiting protrusions (2322, 2342) extending from the second frame side portion 232 and the fourth frame side portion 234 toward the object side, respectively, so that the frame 23 is limited to move away from the base 22 toward the object side in the first direction through the collision between the frame limiting protrusions (2322, 2342) and the cover 21, thereby preventing the frame 23 from falling off. Preferably, the top surfaces of the two frame limiting protrusions (2322, 2342) are at the same height.

[0125] To further describe the electrical connection relationship and structure between the aperture device 40 and the lens driving device 20, the specific structure of the aperture device 40 is supplemented. Figure 4 ,as well as, Fig. 9 As shown, the blade assembly 43 includes a plurality of aperture blades 431, and the plurality of aperture blades 431 are stacked to form an aperture hole of the blade assembly 43. The blade assembly 43 is arranged on the object side of the aperture movable part 42 and the aperture fixed seat 411, and a plurality of blade guide shafts 421 are formed on the object side surface of the aperture movable part 42, and a plurality of blade rotation shafts 4111 are formed on the object side surface of the aperture fixed seat 411, and each aperture blade 431 is respectively formed with a guide hole 4311 corresponding to the blade guide shaft 421 and a rotation hole 4312 corresponding to the blade rotation shaft 4111, wherein the guide hole 4311 is located on the side of the rotation hole 4312 closer to the optical axis. The guide holes 4311 and the rotation holes 4312 on the multiple aperture blades 431 are respectively mounted on the multiple blade guide shafts 421 of the aperture movable part 42 and the multiple blade rotation shafts 4111 of the aperture fixed seat 411, so that when the aperture movable part 42 rotates, several aperture blades 431 of the blade assembly 43 rotate around the rotation axis, thereby changing the size of the aperture hole, changing the amount of light entering the camera module 1, and realizing the function of adjusting the aperture size.

[0126] More specifically, when the aperture driving section 44 drives the aperture movable section 42 to rotate relative to the aperture fixed section 41 in response to the driving power provided by the aperture conductive section 47, each blade guide shaft 421 drives each aperture blade 431 in the blade assembly 43 to rotate around the blade rotation shaft 4111 sleeved by the rotation hole 4312 of the aperture blade 431 through the guide hole 4311 on each aperture blade 431. That is, the aperture driving section 44 drives the aperture movable section 42 to rotate so as to drive the plurality of aperture blades 431 rotatably disposed on the aperture movable section 42 to rotate, thereby changing the size of the aperture hole of the blade assembly 43.

[0127] Furthermore, the aperture device 40 may further include an aperture gasket 49, which is disposed between the blade assembly 43 and the aperture movable portion 42, and has a light hole in the middle for light to pass through. The aperture gasket 49 is usually made of black material to reduce stray light.

[0128] In one example, the aperture driving unit 44 is implemented as a voice coil motor. The aperture driving unit 44 includes at least one aperture driving magnet 441 and at least one aperture driving coil 443 which are arranged opposite to each other, the at least one aperture driving magnet 441 being fixed to one of the aperture movable unit 42 and the aperture fixed unit 41, the at least one aperture driving coil 443 being fixed to the other of the aperture movable unit 42 and the aperture fixed unit 41, and the at least one aperture driving coil 443 being electrically connected to the aperture conductive unit 47 to obtain driving power from the aperture conductive unit 47. In a specific example, the aperture driving unit 44 includes two aperture driving magnets 441 and two aperture driving coils 443, the two aperture driving magnets 441 are fixed to the outer side of the aperture movable part 42 at an interval of 180 degrees, and the two aperture driving coils 443 are respectively opposite to the two aperture driving magnets 441 in a horizontal direction perpendicular to the optical axis and fixed to the aperture fixing seat 411, so that the two aperture driving coils 443 interact with the two aperture driving magnets 441 when generating a magnetic field under current excitation, and drive the aperture movable part 42 to rotate. Further, the aperture driving unit 44 may also include two aperture magnetic conductive parts 442, the two aperture magnetic conductive parts 442 are fixed to the aperture movable part 42 by, for example, insert molding, and are respectively arranged on the side of the two aperture driving magnets 441 away from the two aperture driving coils 443, so as to enhance the magnetic field strength of the two aperture driving magnets 441 facing the two aperture driving coils 443.

[0129] Furthermore, in order to enable the movable aperture part 42 to be movably disposed in the fixed aperture part 41 and prevent the movable aperture part 42 from falling off, the aperture device 40 further includes an aperture support part 45 and an aperture magnetic attraction part 46. The aperture support part 45 is disposed between the movable aperture part 42 and the fixed aperture part 41, and the aperture magnetic attraction part 46 is used to attract the movable aperture part 42 to the fixed aperture part 41 so that the movable aperture part 42 and the fixed aperture part 41 clamp the aperture support part 45, so that the movable aperture part 42 is supported on the fixed aperture part 41 through the aperture support part 45. The aperture support part 45 moves relative to at least one of the movable aperture part 42 and the fixed aperture part 41 in a sliding friction or rolling friction manner, so that the movable aperture part 42 can move relative to the fixed aperture part 41 with a smaller friction resistance.

[0130] In one example, the aperture support part 45 includes at least three aperture balls 451, and the at least three balls are arranged on the bottom surface (image side) of the aperture movable part 42 and the top surface (object side) of the aperture fixed seat 411. In a specific example, the aperture support part 45 includes three aperture balls 451, the bottom surface of the aperture movable part 42 is formed with three arc-shaped upper grooves 422, and the side of the aperture fixed seat 411 facing the bottom surface of the aperture movable part 42 is formed with three arc-shaped lower grooves 4112, and the three arc-shaped upper grooves 422 are respectively arranged corresponding to the three arc-shaped lower grooves 4112, and the three aperture balls 451 are respectively arranged between the three arc-shaped upper grooves 422 and the three arc-shaped lower grooves 4112. The three arc-shaped upper grooves 422 extend along the circumference of the bottom surface of the aperture movable part 42 and are arranged at equal intervals on the bottom surface of the aperture movable part 42, so as to facilitate the rotation of the aperture movable part 42 relative to the aperture fixed part 41.

[0131] The aperture magnetic portion 46 includes at least one aperture magnetic component 461 and at least one aperture magnetic magnet 462 arranged along a first direction, and at least one aperture magnetic component 461 is fixed to one of the aperture movable portion 42 and the aperture fixed seat 411, until at least one aperture magnetic magnet 462 is fixed to the other of the aperture movable portion 42 and the aperture fixed portion 41, so that the aperture movable portion 42 is attracted to the aperture fixed portion 41 by the magnetic attraction between the aperture magnetic component 461 and the aperture magnetic magnet 462 so that the aperture movable portion 42 and the aperture fixed portion 41 clamp the aperture support portion 45. In a specific example, the aperture magnetic part 46 includes two aperture magnetic parts 461 and two aperture magnetic magnets 462. The two aperture magnetic magnets 462 are fixed to the aperture movable part 42. The two aperture magnetic parts 461 correspond to the two aperture magnetic magnets 462 respectively and are fixed to the aperture fixing seat 411.

[0132] In one example, the aperture device 40 further includes an aperture position detection element 48. The aperture position detection element 48 is fixed to the aperture fixing seat 411 and electrically connected to the aperture conductive portion 47, and is used to obtain position change information of a magnet (which may be an aperture driving magnet 441 or an aperture magnetic magnet 462, or other additional magnets) fixed to the aperture movable portion 42, and then obtain position change information of the aperture movable portion 42.

[0133] The aperture conductive part 47 is electrically connected to the carrier conductive part 271, so as to be electrically connected to the aperture device 40 through the electrical connection between the carrier conductive part 271 and the conductive connection part 272 and the base conductive part 273, so as to realize the electrical connection between the aperture device 40 and the external electronic device. The aperture conductive part 47 includes an aperture circuit board body 471, a first electrical lead-out tape 472 and a second electrical lead-out tape 473, the first electrical lead-out tape 472 and the second electrical lead-out tape 473 are electrically connected to the aperture circuit board body 471, respectively, and the first electrical lead-out tape 472 and the second electrical lead-out tape 473 are electrically connected to the driving conductive component 27, so as to be electrically connected to the driving conductive component 27 from both ends of the aperture circuit board body 471 through the first electrical lead-out tape 472 and the second electrical lead-out tape 473. The aperture circuit board body 471 is fixed to the aperture fixing seat 411 of the aperture fixing part 41 , the two aperture driving coils 443 of the aperture driving part 44 are electrically connected to the aperture circuit board body 471 , and the aperture position detection element 48 is electrically connected to the aperture circuit board body 471 .

[0134] Furthermore, the carrier conductive part 271 also includes two aperture conductive parts, a first aperture conductive part 2714 and a second aperture conductive part 2715. The first aperture conductive part 2714 is fixed to the second side of the carrier 24, and the second aperture conductive part 2715 is fixed to the fourth side of the carrier 24. The two aperture conductive parts can be fixed to the carrier 24 by insert molding. The first electrical lead-out tape 472 extends outward from the second side of the aperture device 40, and is electrically connected to one end of the first aperture conductive member 2714 and the first inner fixed end 27213 of the first electrical connector 2721, and the other end of the first aperture conductive member 2714 is directly or indirectly electrically connected to the second electrical connector 2722, for example, the other end of the first aperture conductive member 2714 can be electrically connected to the carrier circuit board 2711 and then indirectly electrically connected to the second electrical connector 2722; the second electrical lead-out tape 473 extends outward from the fourth side of the aperture device 40, and is electrically connected to one end of the second aperture conductive member 2715 and the fourth inner fixed end 27243 of the fourth electrical connector 2724, and the other end of the second aperture conductive member 2715 is directly or indirectly electrically connected to the third electrical connector 2723, for example, the other end of the second aperture conductive member 2715 can be electrically connected to the carrier circuit board 2711 and then indirectly electrically connected to the third electrical connector 2723. Correspondingly, the first electrical lead-out belt 472 and the second electrical lead-out belt 473 are electrically connected to the two aperture conductive members and the conductive connecting portion 272 , respectively, so as to realize the electrical connection between the aperture device 40 and the driving conductive assembly 27 .

[0135] In one example, the first electroconductor lead 472 and the second electroconductor lead 473 extend outward from opposite sides of the aperture device 40 and are fixed to the top surface of the carrier 24. Specifically, the first electroconductor lead 472 extends from the aperture device 40 to the upper side (object side) of the second driving magnet 2522, and the second electroconductor lead 473 extends from the aperture device 40 to the upper side (object side) of the third driving magnet 2523. When viewed along the first direction, at least a portion of the first electroconductor lead 472 overlaps with the second driving magnet 2522, and at least a portion of the second electroconductor lead 473 overlaps with the third driving magnet 2523.

[0136] More specifically, the first electrical lead-out tape 472 extends outward from the second side of the aperture device 40 and is fixed to the second side of the carrier 24; the second electrical lead-out tape 473 extends outward from the fourth side of the aperture device 40 and is fixed to the fourth side of the carrier 24. It should be understood that the aperture device 40 is disposed above the cover 21 (object side), and the first electrical lead-out tape 472 and the second electrical lead-out tape 473 pass through the cover through hole 211 of the cover 21, are fixed to the top surface of the carrier 24, and are electrically connected to the carrier conductive portion 271 and the conductive connecting portion 272 fixed to the carrier 24.

[0137] It is worth mentioning that in the camera module 1 of the present application, the carrier circuit board 2711 for electrically connecting the focus coil 2511 and the focus position sensing element 281 and the aperture conductive part 47 for electrically connecting to the two aperture drive coils 443 and the aperture position detection element 48 are both electrically connected to the base conductive part 273 through the conductive connecting part 272, and are electrically connected to the photosensitive device 30 through the base conductive part 273, thereby realizing electrical conduction among the focus coil 2511, the focus position sensing element 281, the two aperture drive coils 443 and the aperture position detection element 48 and the photosensitive device 30 and the external electronic device. In other words, the focus driving component composed of the focus coil 2511 and the focus position sensing element 281 and the aperture driving component composed of the two aperture driving coils 443 and the aperture position detecting element 48 share the conductive connection part 272, and both obtain the driving power supply and the driving signal through the electrical connection between the conductive connection part 272 and the base conductive part 273, so that the overall circuit is integrated, the complexity of the circuit design is reduced, and the excessive influence on the movement of the optical lens 10 in the first direction due to the circuit setting of the aperture device 40 is avoided. In the present application, although the focus driving component and the aperture driving component share the conductive connection part 272, the circuit of the focus driving component and the circuit of the aperture driving component are in parallel, and accordingly, the aperture device 40 and the lens driving device 20 are controlled separately.

[0138] It should be understood that in the present application, since an aperture device 40 fixed to the optical lens 10 is provided in the camera module, the weight of the object to be driven by the lens driving device 20 is significantly increased, and how to movably set the aperture device 40 and the optical lens 10 in the lens driving device 20 becomes an urgent problem to be solved. The use of shrapnel to suspend the aperture device 40 and the optical lens 10 in the lens driving device 20 requires extremely high performance of the shrapnel. To solve this problem, the technical solution of the present application movably supports the carrier 24 in the frame 23 through the focus support part 262, and movably supports the frame 23 in the base 22 through the anti-shake support part 264. The carrier 24 used to carry the optical lens 10 and the aperture device 40 is movably supported in the lens driving device 20 using support parts such as balls, guide rods, and sliders, thereby avoiding the problem of the shrapnel being difficult to load due to the setting of the aperture device 40.

[0139] Furthermore, since the focusing function of the lens driving device 20 realizes the movable support of the carrier 24 through the focusing support part 262, the magnet used for focusing (the first driving magnet 2521) is only arranged on one side (the first side) of the lens driving device 20. Since the magnet used for anti-shake needs to realize the movement of the frame 23 in the horizontal direction (the second direction), the magnet used for anti-shake needs to be arranged on at least two sides. In order to reduce the overall size of the lens driving device 20, the first driving magnet 2521 is also used for anti-shake, and another magnet used for anti-shake (the second driving magnet 2522) needs to be arranged on the adjacent side (for example, the second side) of the first driving magnet 2521. Considering the increase in the driving force for anti-shake, more magnets for anti-shake (the third driving magnet 2523) can be further arranged on other sides.

[0140] The focus position sensing element 281 and the focus position sensing magnet 282 in the focus position sensing component 28 are arranged in the lens driving device 20 along the first direction. In order to avoid the driving magnet part 252 from causing adverse effects on the position sensing function of the focus position sensing element 281, the focus position sensing element 281 and the focus position sensing magnet 282 are arranged on the side of the lens driving device 20 where the driving magnet part 252 is not arranged, that is, the focus position sensing component 28 and the driving magnet part 252 are arranged on different sides of the lens driving device 20. Preferably, the focus position sensing element 281 and the focus position sensing magnet 282 are arranged on the third side, and the driving magnet portion 252 is not arranged on the third side of the lens driving device 20, which not only avoids the magnetic force of the driving magnet portion 252 from affecting the focus position sensing element 281, but also allows sufficient space for the focus position sensing magnet 282 to be arranged, so that the height design of the driving magnet portion 252 is not limited by the focus position sensing magnet 282, thereby reducing the problem of increased height size of the lens driving device 20 due to the arrangement of the focus position sensing component 28.

[0141] Since the first side 51 of the carrier 24 is provided with the focus coil 2511 and the third side 53 is provided with the focus position sensing element 281, the space for the first side 51 and the third side 53 of the carrier 24 to further electrically connect the aperture device 40 is small. Accordingly, it is preferred that the first and second electrical lead-out belts 472 and 473 of the aperture device 40 are respectively led out from the second and fourth sides 52 and 54 that are oppositely arranged, and are respectively fixed to the second and fourth sides 52 and 54 of the carrier 24, thereby avoiding the first side 51 provided with the focus coil 2511 and the third side 53 provided with the focus position sensing element 281.

[0142] On the other hand, a focusing coil 2511 is provided on the first side 51 of the carrier 24, and the space for electrically connecting the first side 51 of the carrier 24 to the aperture device 40 is small, while the first and second electrical lead-out belts 472 and 473 of the aperture device 40 extend outward from opposite sides of the aperture device 40. Therefore, the first and second electrical lead-out belts 472 and 473 preferably extend outward from the second side 52 and the fourth side 54, thereby avoiding being arranged on the first side 51.

[0143] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A lens driving device, characterized in that: include: Pedestal; a frame, the frame being movably disposed on the base; A carrier, the carrier is used to carry the optical lens, and the carrier is movably arranged on the frame; a lens driving assembly, the lens driving assembly being configured to drive the carrier to move relative to the base along a first direction and a second direction perpendicular to the first direction, the lens driving assembly comprising a driving magnet portion and a driving coil portion disposed opposite to the driving magnet portion; as well as A focus position sensing component, wherein the focus position sensing component and the driving magnet portion are arranged on different sides of the lens driving device.

2. The lens driving device according to claim 1, characterized in that: The focus position sensing component includes a focus position sensing element and a focus position sensing magnet arranged relatively along the first direction, the first direction is parallel to the optical axis of the optical lens, the focus position sensing element is fixed to the carrier, and the focus position sensing magnet is fixed to the frame.

3. The lens driving device according to claim 2, characterized in that: The driving magnet portion is arranged on the frame, and the driving magnet portion includes a first driving magnet, a second driving magnet and a third driving magnet. The second driving magnet and the third driving magnet are arranged on both sides of the first driving magnet, and the focus position sensing magnet is arranged on the opposite side of the first driving magnet.

4. The lens driving device according to claim 3, characterized in that: The bottom surface of the first driving magnet is flush with the bottom surfaces of the second driving magnet and the third driving magnet, the top surface of the first driving magnet is higher than the top surfaces of the second driving magnet and the third driving magnet, and the bottom surface of the focus position sensing magnet is lower than the top surfaces of the second driving magnet and the third driving magnet.

5. The lens driving device according to claim 3, characterized in that: The driving coil portion includes a focusing coil portion and an anti-shake coil portion, wherein the focusing coil portion is arranged on the carrier and opposite to the driving magnet portion, and the focusing coil portion includes a focusing coil arranged opposite to the first driving magnet; the anti-shake coil portion is arranged on the base and opposite to the driving magnet portion, and the anti-shake coil portion includes a first anti-shake coil, a second anti-shake coil and a third anti-shake coil which are respectively arranged opposite to the first driving magnet, the second driving magnet and the third driving magnet.

6. The lens driving device according to any one of claims 3 to 5, characterized in that: The lens driving device also includes a driving conductive component, which includes a carrier conductive part arranged on the carrier, a base conductive part arranged on the base, and a conductive connecting part electrically connecting the carrier conductive part and the base conductive part, wherein the carrier conductive part includes a first coil conductive part, a second coil conductive part and a carrier circuit board fixed to the carrier, the focus position sensing element is fixed and electrically connected to the carrier circuit board, the first coil conductive part and the second coil conductive part electrically connect the focus coil and the carrier circuit board, and the anti-shake coil part is electrically connected to the base conductive part.

7. The lens driving device according to claim 6, characterized in that: The lens driving device also includes a focus support portion and a focus magnetic attraction portion, wherein the focus support portion is arranged between the carrier and the frame along a first direction, and the focus magnetic attraction portion is used to adsorb the carrier to the frame so that the carrier is supported on the side of the frame close to the optical axis through the focus support portion.

8. The lens driving device according to claim 6, characterized in that: The lens driving device also includes an anti-shake support part and an anti-shake magnetic part. The anti-shake support part is arranged between the frame and the base along the second direction, and the anti-shake magnetic part is used to adsorb the frame to the base so that the frame is supported on the top surface of the base through the anti-shake support part.

9. The lens driving device according to claim 8, characterized in that: The anti-shake support part includes at least three anti-shake balls, and any two of the at least three anti-shake balls are used as bearing axes. The torque exerted on the frame by the magnetic attraction force between the anti-shake magnetic attraction part and the driving magnet part is greater than the torque exerted on the frame by the gravity of the frame and other camera module components supported by the frame.

10. The lens driving device according to claim 9, characterized in that: The anti-shake support portion includes three anti-shake balls, and viewed along the first direction, one of the anti-shake balls and the focus position sensing magnet at least partially overlap.

11. The lens driving device according to claim 6, characterized in that: The driving conductive component is also used to be electrically connected to the aperture device, and the aperture device includes a first electrical lead-out belt and a second electrical lead-out belt, the first electrical lead-out belt and the second electrical lead-out belt respectively extend outward from opposite sides of the aperture device and are fixed to the top surface of the carrier, and the first electrical lead-out belt and the second electrical lead-out belt are respectively electrically connected to the driving conductive component.

12. The lens driving device according to claim 11, characterized in that: The first electroconductance belt extends from the aperture device to above the second driving magnet, and the second electroconductance belt extends from the aperture device to above the third driving magnet. When viewed along the first direction, at least part of the first electroconductance belt overlaps with the second driving magnet, and at least part of the second electroconductance belt overlaps with the third driving magnet.

13. The lens driving device according to claim 11, characterized in that: The lens driving device also includes a cover body fixed to the base, the aperture device is arranged above the cover body, the first electrical conduction belt and the second electrical conduction belt pass through the cover body through hole of the cover body and are fixed to the top surface of the carrier and are electrically connected to the carrier conductive part and the conductive connecting part fixed to the carrier.

14. The lens driving device according to claim 13, characterized in that: The carrier conductive part also includes two aperture conductive parts, a first aperture conductive part and a second aperture conductive part. The first electrical conduction lead-out belt and the second electrical conduction lead-out belt are electrically connected to the two aperture conductive parts and the conductive connection part respectively.

15. A camera module, characterized in that: include: An optical lens having an optical axis; A photosensitive device, the photosensitive device is used to receive the light emitted by the optical lens to perform imaging; as well as The lens driving device according to any one of claims 1 to 14, wherein the driving device is suitable for driving the optical lens to move.

16. The camera module according to claim 15, characterized in that: The camera module also includes an aperture device fixed to the optical lens, the aperture device includes an aperture fixed part, an aperture movable part, a blade assembly, an aperture driving part and an aperture conductive part, the aperture movable part is movably arranged on the aperture fixed part, the blade assembly is linked to the aperture movable part, the aperture driving part is arranged between the aperture movable part and the aperture fixed part, the aperture conductive part is configured to provide driving power to the aperture driving part, the aperture driving part drives the aperture movable part to move relative to the aperture fixed part, the blade assembly has an adjustable aperture hole, and the blade assembly changes the size of the aperture hole as the aperture movable part moves.

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