Camera module, camera and electronic device

Abstract

The embodiment of the present application relates to the technical field of camera devices, and discloses a camera module, a driving element is arranged on a base, the driving element is used for driving a lens supporting frame to move along an optical axis for focusing, the driving element is also used for driving a vane driving frame to rotate around the optical axis as a rotating shaft, the vane driving frame drives a vane driving ring to rotate synchronously when rotating, and the vane driving ring drives a plurality of light shielding vanes to gather or separate, so that the size of an opening surrounded by the light shielding vanes is adjusted. That is to say, the driving element for driving the light shielding vanes and the lens for focusing is the same, so that the number of elements of the camera module can be reduced, the volume and weight of the camera module are reduced, and interference between a structure for focusing and a power mechanism for driving the light shielding vanes in the camera module is avoided. The embodiment of the present application also discloses a camera and electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of camera device technology, and in particular to a camera module, camera and electronic device. Background Technology

[0002] An aperture (adjustable stop) is used to change the amount of light entering the optical system for imaging. By setting an aperture in a camera module, its size can be adjusted to adapt to shooting needs in different lighting conditions. The focusing mechanism, by changing the position of the lens, enables the camera module to focus, allowing for clearer image capture of the target object. The combined use of aperture and focusing mechanisms improves the shooting performance of the camera module. Therefore, camera modules with aperture and focusing mechanisms are widely favored by consumers in electronic devices such as smartphones and tablets.

[0003] A blade drive mechanism moves multiple blades, changing the size of the opening they form. This can be applied to various optical units in cameras, such as shutters, apertures, and filters. However, in optical systems where adjustment is achieved by moving a lens using a lens drive mechanism, the size, weight, and multi-directional protrusions caused by the blade drive mechanism's assembly orientation can hinder its operation and configuration. While smaller blade drive mechanisms made of shape memory metal can overcome the issues of weight and size, increasing the length of the shape memory metal is necessary when a large variation in the size of the opening is required. Therefore, the problems caused by the large size and weight of the blade drive mechanism remain largely unresolved.

[0004] Furthermore, to avoid interference between the blade drive mechanism and the focusing mechanism, the servo control of the focusing mechanism may be affected. Alternatively, to ensure that the blade drive mechanism can move accordingly to properly block light when the lens moves, its weight needs to be evenly distributed across the entire circumference. These design solutions are challenging, and the reliability of products based on them cannot be guaranteed.

[0005] Therefore, there is an urgent need in this field for a camera module that can solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a camera module, camera, and electronic device that can reduce the size and weight of the camera module and avoid interference between the focusing mechanism and the drive blade mechanism in the camera module.

[0007] To address the aforementioned technical problems, a first aspect of the present invention provides a camera module, comprising:

[0008] The lens comprises: a base with a driving component; a lens support frame fitted around the outer edge of the lens, the driving component driving the lens support frame to move along the optical axis for focusing; a blade drive frame rotatably mounted on the base about the optical axis and fitted around the outside of the lens, the driving component also driving the blade drive frame to rotate; a blade drive ring mounted on the blade drive frame and rotatably fitted around the outside of the lens about the optical axis, the blade drive frame rotating under the drive of the driving component causing the blade drive ring to rotate; multiple light-shielding blades spaced apart from each other along the circumference of the blade drive ring, the blade drive ring rotating causing the multiple light-shielding blades to converge or separate; and a blade support member fastened to the object side of the lens support frame, the multiple light-shielding blades located between the blade drive ring and the blade support member, the multiple light-shielding blades being rotatably connected to the blade support member, the blade support member supporting the multiple light-shielding blades.

[0009] In some embodiments, the lens support frame is provided with a first follower, and the driving member drives the lens support frame to move along the optical axis for focusing by driving the first follower to move; the blade drive frame is provided with a second follower, and the driving member drives the blade drive frame to rotate by driving the second follower to rotate.

[0010] In some embodiments, the driving element is a magnet, the first driven element is a focusing coil, and the second driven element is a blade drive coil; when the focusing coil is energized, the magnet drives the focusing coil to move along the optical axis to drive the lens support frame to focus along the optical axis; when the blade drive coil is energized, the magnet drives the blade energized coil to rotate about the optical axis to drive the blade drive frame to rotate about the optical axis.

[0011] In some embodiments, the base has at least three arc-shaped first receiving grooves on the side facing the blade drive frame, and the blade drive frame has at least three arc-shaped second receiving grooves on the side facing the base. The first receiving grooves and the second receiving grooves are arranged in a one-to-one correspondence and form a receiving space. Each receiving space has a spherical support member, which simultaneously abuts against the inner walls of the first receiving groove and the second receiving groove.

[0012] In some embodiments, a blade holding component is further included, which is fixed to the blade drive frame and is used to cooperate with the drive component to keep the blade drive frame in its initial position when the power is off.

[0013] In some embodiments, the blade drive ring is provided with a plurality of through slots, which are arranged at intervals along the circumference of the blade drive ring; each through slot extends from the outer edge to the inner edge of the blade drive ring, and the extension direction of each through slot forms an angle with the radial direction of the blade drive ring; the plurality of light-shielding blades are all arc-shaped, and one end of each of the plurality of light-shielding blades is provided with a guide portion, which is located on the image-side surface of the light-shielding blade, and the guide portions of the plurality of light-shielding blades correspond one-to-one and can slidably extend into the through slots.

[0014] In some embodiments, the blade support is provided with a plurality of positioning holes spaced apart circumferentially, and the other end of each of the plurality of light-shielding blades is provided with a positioning part, the positioning part being located on the object side of the light-shielding blade, and the positioning parts of the plurality of light-shielding blades are one-to-one corresponding and rotatably extended into the positioning holes.

[0015] In some embodiments, the blade drive ring is provided with a connecting arm, and the blade drive frame is provided with a connecting groove. The connecting arm extends slidably into the connecting groove along the optical axis to engage and connect the blade drive ring and the blade drive frame.

[0016] In some embodiments, the device further includes a housing with a receiving space, in which the base, the lens support frame, and the blade drive frame are located; the housing has a central through-hole for exposing the blade drive ring, the plurality of light-shielding blades, and the blade support; the housing is made of a magnetic material.

[0017] In some embodiments, the device further includes a stabilization mechanism and a sensor assembly disposed on the stabilization mechanism, the stabilization mechanism being located on the image side of the base, the stabilization mechanism being used to drive the sensor assembly to achieve image stabilization.

[0018] Compared to related technologies, the embodiments of this invention feature a driving component on the base. This driving component drives the lens support frame to move along the optical axis for focusing. It also drives a blade drive frame to rotate around the optical axis. When the blade drive frame rotates, it causes a blade drive ring to rotate synchronously. The blade drive ring then drives multiple light-shielding blades to converge or separate, thereby adjusting the size of the opening formed by the light-shielding blades. In other words, the driving component for both the light-shielding blades and the lens focusing mechanism is the same. This reduces the number of components in the camera module, thereby reducing its size and weight, and preventing interference between the focusing structure and the power mechanism driving the light-shielding blades within the camera module. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a three-dimensional structural diagram of a camera module according to an embodiment of the present invention;

[0021] Figure 2 This is a front view of a camera module according to an embodiment of the present invention;

[0022] Figure 3 This is an exploded view of the structure of a camera module according to an embodiment of the present invention;

[0023] Figure 4 yes Figure 2 A cross-sectional view along line AA';

[0024] Figure 5 yes Figure 2 A cross-sectional view along line BB';

[0025] Figure 6 This is a three-dimensional structural schematic diagram of the blade drive frame of a camera module according to an embodiment of the present invention;

[0026] Figure 7a This is a schematic diagram of the state of a camera module according to an embodiment of the present invention when multiple light-shielding blades are brought together to their extreme positions;

[0027] Figure 7b This is a schematic diagram of the state of multiple light-shielding blades of a camera module according to an embodiment of the present invention during the separation process;

[0028] Figure 7c This is a schematic diagram of the state of a camera module according to an embodiment of the present invention when multiple light-shielding blades are separated to their extreme positions;

[0029] Figure 8 This is a three-dimensional structural schematic diagram of the blade drive ring of a camera module according to an embodiment of the present invention;

[0030] Figure 9 This is a three-dimensional structural schematic diagram of the light-shielding blades of a camera module according to an embodiment of the present invention;

[0031] Figure 10 This is a front view of the light-shielding blades of a camera module according to an embodiment of the present invention;

[0032] Figure 11 This is a three-dimensional structural schematic diagram of the blade support member of a camera module according to an embodiment of the present invention;

[0033] Figure 12This is a three-dimensional structural diagram of a camera module according to another embodiment of the present invention;

[0034] Figure 13 This is a front view of a camera module according to another embodiment of the present invention;

[0035] Figure 14 This is an exploded view of the structure of a camera module according to another embodiment of the present invention;

[0036] Figure 15 This is an exploded view of the image stabilization mechanism of a camera module according to another embodiment of the present invention.

[0037] Symbol Explanation

[0038] 100mm lens

[0039] 110 lenses

[0040] 120mm lens tube

[0041] 200 bases

[0042] 210 Drive Unit

[0043] 220 First receiving slot

[0044] 230 Spherical Support

[0045] 300 Lens Support Frame

[0046] 310 First follower

[0047] 320 First Flexible Circuit Board

[0048] 321 First sensing element

[0049] 330 First Position Detection Component

[0050] 340 First Leaf Spring

[0051] 350 Second Leaf Spring

[0052] 400 blade drive frame

[0053] 410 Second receiving slot

[0054] 420 Second follower

[0055] 430 Second Flexible Circuit Board

[0056] 431 Second sensing element

[0057] 440 Connection Slot

[0058] 450 Blade Holding Components

[0059] 500 blade drive ring

[0060] 510 Connecting Arm

[0061] 520 through slot

[0062] 521 Limiting Part

[0063] 600 shaded blades

[0064] 610 Guidance Department

[0065] 620 Positioning Department

[0066] 700 blade support

[0067] 710 positioning hole

[0068] 720 First Central Through Hole

[0069] 730 Drive Ring Pressure Plate

[0070] 740 Blade Chamber

[0071] 800 casing

[0072] 810 Second Central Through Hole

[0073] 820 bottom shell

[0074] 900 image stabilization mechanism

[0075] 910 Sensor Assembly

[0076] 920 Image Stabilization Base

[0077] 921 Image Stabilization Magnet

[0078] 922 First Receiving Tank

[0079] 922a First gasket

[0080] 923 mounting holes

[0081] 923a Damping Component

[0082] 930 Movable Stand

[0083] 931 Fixed magnetic yoke

[0084] 932a Second Gasket

[0085] 933 ball bearing

[0086] 940 Coil Support

[0087] 950 circuit board

[0088] 1000 camera modules Detailed Implementation

[0089] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0090] In embodiments of the present invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0091] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0092] Furthermore, the terms "installation," "setting," "equipped with," "opening," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0093] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0094] One embodiment of the present invention relates to a camera module 1000, such as... Figures 1 to 5As shown, it includes: a lens 100; a base 200, on which a driving member 210 is provided; a lens support frame 300, sleeved on the outer edge of the lens 100, the driving member 210 driving the lens support frame 300 to move along the optical axis for focusing; a blade drive frame 400, rotatably mounted on the base 200 about the optical axis and sleeved on the outer side of the lens 100, the driving member 210 also used to drive the blade drive frame 400 to rotate; and a blade drive ring 500, mounted on the blade drive frame 400 and rotatably sleeved on the outer side of the lens 100 about the optical axis. When the drive member 210 rotates, it drives the blade drive ring 500 to rotate; a plurality of light-shielding blades 600 are arranged on the blade drive ring 500 along the circumference and spaced apart from each other. When the blade drive ring 500 rotates, it drives the plurality of light-shielding blades 600 to converge or separate; and a blade support member 700 is fastened and fixed to the object side of the lens support frame 300. The plurality of light-shielding blades 600 are located between the blade drive ring 500 and the blade support member 700. The plurality of light-shielding blades 600 are rotatably connected to the blade support member 700. The blade support member 700 is used to support the plurality of light-shielding blades 600.

[0095] Compared to the prior art, in the embodiments of the present invention, the base 200 is provided with a driving member 210. The driving member 210 is used to drive the lens support frame 300 to move along the optical axis for focusing. The driving member 210 is also used to drive the blade driving frame 400 to rotate about the optical axis. When the blade driving frame 400 rotates, it drives the blade driving ring 500 to rotate synchronously. The blade driving ring 500 then drives the plurality of light-shielding blades 600 to converge or separate, thereby adjusting the size of the opening formed by the plurality of light-shielding blades 600. That is to say, the driving member 210 that drives the plurality of light-shielding blades 600 and drives the lens 100 to focus is the same. In this way, the number of components in the camera module 1000 can be reduced, thereby reducing the size and weight of the camera module 1000 and avoiding interference between the focusing structure and the power mechanism driving the light-shielding blades 600 in the camera module 1000.

[0096] The implementation details of the camera module in this embodiment are described below. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0097] In this embodiment, the base 200, the blade drive frame 400, the blade drive ring 500, the plurality of light-shielding blades 600 and the blade support 700 are arranged sequentially from the image side to the object side of the camera module 1000, that is, these components are arranged sequentially along the optical axis, so that the camera module 1000 can be assembled along the extension direction of the optical axis, reducing the assembly difficulty and avoiding multi-directional protrusion.

[0098] It is understood that the lens 100 includes a lens element 110 and a lens barrel 120. The lens element 110 is fixed on the inner wall of the lens barrel 120. The lens barrel 120 is used to protect the lens element 110 and prevent damage to the lens element 110. In addition, the lens barrel 120 can also provide space for connection with the lens support frame 300, that is, the lens support frame 300 is fitted and fixed on the outer wall of the lens barrel 120.

[0099] Please refer to this as well. Figure 6 In this embodiment, the base 200 has at least three arc-shaped extending first receiving grooves 220 on the side facing the blade drive frame 400, and the blade drive frame 400 has at least three arc-shaped extending second receiving grooves 410 on the side facing the base 200. The first receiving grooves 220 and the second receiving grooves 410 are arranged in a one-to-one correspondence and form a receiving space. Each receiving space has a spherical support member 230, which abuts against the inner walls of both the first receiving groove 220 and the second receiving groove 410. That is, when the drive member 410 drives the blade drive frame 400 to rotate, the spherical support member 230 can support the blade drive frame 400, and at the same time, it can also make the blade drive frame 400 rotate smoothly by its own rolling. Optionally, the first receiving groove 220 and the second receiving groove 410 can both be set to four, and the first receiving groove 220 and the second receiving groove 410 can be arranged opposite each other in a one-to-one correspondence. The spherical support member 230 can also be set to four accordingly.

[0100] Specifically, the first receiving groove 220 and the second receiving groove 410 are both arranged at intervals around the optical axis. The plurality of first receiving grooves 220 may or may not be arranged on the same circular trajectory, but preferably they are arranged on the same circular trajectory; the plurality of second receiving grooves 410 are arranged in the same way as the first receiving grooves 220.

[0101] In other feasible embodiments, the first receiving slot 220 and the second receiving slot 410 can both be configured as three, and the spherical support member 230 can also be configured as three, with one spherical support member 230 accommodated in each receiving space. In this way, while ensuring that the blade drive frame 400 can rotate relative to the base 200 under force, it can still remain stable and prevent the blade drive frame 400 from flipping in the extension direction of the optical axis; in addition, the number of spherical support members 230 can be further reduced, thereby further reducing the weight of the camera module 1000.

[0102] It should be noted that the specific number and position of the first receiving groove 220, the second receiving groove 410 and the spherical support member 230, as well as the number of spherical support members 230 provided in one receiving groove, can be arranged by those skilled in the art according to actual force requirements under the guidance of this invention, and all of these are part of the concept of this invention. This invention does not make any specific limitations on these aspects.

[0103] In this embodiment, the lens support frame 300 is provided with a first follower 310, and the driving member 210 drives the lens support frame 300 to move along the optical axis for focusing by driving the first follower 310 to move. The blade drive frame 400 is provided with a second follower 420, and the driving member 210 drives the blade drive frame 400 to rotate by driving the second follower 420 to rotate. That is, the focusing movement of the lens 100 is achieved by the driving member 210 applying force to the first follower 310. Since the first follower 310 is fixed on the lens support frame 300, the lens support frame 300 is driven to move, and the lens 100 is fixedly mounted on the lens support frame 300, so that the lens 100 also moves with the lens support frame 300 to achieve focusing. The driving member 210 applies force to the second driven member 420, causing the blade driving frame 400 to rotate around the optical axis. The forces on the first driven member 310 and the second driven member 420 do not interfere with each other, thus avoiding mutual influence between the focusing movement and the blade movement.

[0104] Furthermore, the driving component 210 is a magnet, the first driven component 310 is a focusing coil, and the second driven component 420 is a blade drive coil. When the focusing coil is energized, the magnet drives the focusing coil to move along the optical axis, thereby causing the lens support frame 300 to move along the optical axis for focusing. When the blade drive coil is energized, the magnet drives the blade drive coil to rotate about the optical axis, thereby causing the blade drive frame 400 to rotate about the optical axis. Specifically, when the focusing coil and the blade drive coil are energized, a Lorentz force is generated between them and the magnet, which drives the focusing coil and the blade drive coil to move. Energization is only required when focusing and blade movement are needed, improving the controllability of the camera module 1000.

[0105] In this embodiment, the focusing coil is arranged circumferentially around the outer edge of the lens support frame 300. In this embodiment, the lens support frame 300 is annular, and the focusing coil is wound around the outer wall of the lens support frame 300. When the focusing coil is energized, a Lorentz force is generated between the focusing coil and the magnet. Since the magnet is fixed on the base 200, the focusing coil drives the lens support frame 300 to move.

[0106] More specifically, there are multiple magnets, which are arranged at intervals around the optical axis on the base 200 and located on the side of the base 200 facing the lens support frame 300.

[0107] Alternatively, in other feasible embodiments, there may be multiple focusing coils, which are spaced apart circumferentially on the lens support frame 300. For example, there may be four focusing coils, which are arranged at equal intervals around the outer periphery of the lens support frame 300. When the focusing coils are energized, all four focusing coils are subjected to force, driving the lens support frame 300 to move. It is understood that the number of focusing coils may also be other, such as two, three, or more. Preferably, multiple focusing coils are arranged at equal intervals around the optical axis on the lens support frame 300, which can make the force on the lens support frame 300 more balanced and improve the stability and reliability of the camera module.

[0108] Furthermore, there are multiple blade drive coils, which are spaced apart circumferentially on the blade drive frame 400. Similarly, there can be four blade drive coils, which are spaced apart on the blade drive frame 400. When a blade drive coil is energized, a Lorentz force is generated between the blade drive coil and the magnet. The four blade drive coils are driven by this force to rotate the blade drive frame 400 about the optical axis.

[0109] It should be noted that the lens support frame 300 translates along the optical axis under the action of the Lorentz force, while the blade drive frame 400 rotates about the optical axis under the action of the Lorentz force. This is because the directions of the Lorentz forces acting on the lens support frame 300 and the blade drive frame 400 are different, due to the different configurations of the focusing coil and the blade drive coil. Specifically, this can be determined using the left-hand rule.

[0110] Furthermore, the lens support frame 300 is provided with a first flexible circuit board 320, and the blade drive frame 400 is provided with a second flexible circuit board 430. The first flexible circuit board 320 and the second flexible circuit board 430 are electrically connected. Thus, when power is applied, power can be applied to both the first flexible circuit board 320 and the second flexible circuit board 430 simultaneously to achieve synchronous adjustment of focus and aperture size.

[0111] Please refer to this again. Figure 3 In this embodiment, it is also necessary to detect the amount of focusing movement of the lens support frame 300 and the amount of rotation of the blade drive frame 400 to precisely control the focusing and aperture adjustment of the camera module. Specifically, the lens support frame 300 is provided with a first position detection component 330, and the first flexible circuit board 320 is electrically connected to a first sensing element 321. When the lens support frame 300 moves, the first sensing element 321 determines the amount of focusing movement of the lens support frame 300 by detecting the change in the relative position of the first position detection component 330. For example, the first position detection component 330 can be a magnet, and the first sensing element 321 can be a Hall element. When the lens support frame 300 moves along the optical axis, the magnet moves with the lens support frame 300, while the position of the Hall element is relatively fixed, causing the magnetic field at the position of the Hall element to change continuously, mainly reflected in the continuous change of the magnetic flux passing through the Hall element, thereby detecting the amount of movement of the lens support frame 300.

[0112] A second sensing element 431 is electrically connected to the second flexible circuit board 430. When the blade drive frame 400 rotates, the second sensing element 431 determines the rotation angle of the blade drive frame 400 by detecting the relative position of the drive member 210. For example, when the drive member 210 is a magnetic element (i.e., a magnet), the second sensing element 431 can be a Hall element. When the drive member 210 drives the blade drive frame 400 to rotate and moves the second sensing element 431, the second sensing element 431 determines the rotation angle of the blade drive frame 400 by detecting the change in magnetic flux caused by the drive member 210 at different positions.

[0113] Furthermore, the lens support frame 300 is also provided with a first leaf spring 340 and a second leaf spring 350. The first leaf spring 340 and the second leaf spring 350 are respectively fixed to the object-side surface and the image-side surface of the lens support frame 300. At the same time, the first leaf spring 340 and the first leaf spring 350 are also respectively fixed to the object-side surface and the image-side surface of the base 200, thereby suspending and fixing the lens support frame 300 on the base 200.

[0114] In this embodiment, to avoid interference between the blade drive ring 500 and the lens 100 during focusing, the blade drive ring 500 needs to be movable along the optical axis. Specifically, the blade drive ring 500 is provided with a connecting arm 510, and the blade drive frame 400 is provided with a connecting groove 440. The connecting arm 510 slidably extends into the connecting groove 440 along the optical axis to engage the blade drive ring 500 and the blade drive frame 400. Specifically, the connecting groove 440 passes through the blade drive frame 400 in the direction along the optical axis, but engages the connecting arm 510 in the direction perpendicular to the optical axis. That is, the connecting groove 440 is a through groove extending along the optical axis. In this way, when the blade drive frame 400 rotates, it can drive the blade drive ring 500 to rotate around the optical axis without affecting the movement of the blade drive ring 500 in the extension direction of the optical axis. Since the blade drive ring 500 is sleeved on the outside of the lens 100, when the lens 100 moves along the optical axis away from the base 200 under the drive of the lens support frame 300, the outer edge of the lens barrel 120 pushes the blade drive ring 500 to move, and at this time the connecting arm 510 slides in the connecting groove 440.

[0115] Optionally, there are multiple connecting arms 510 and multiple connecting slots 440, with each connecting arm 510 and each connecting slot 440 corresponding to and engaging with the other. Preferably, there can be two connecting arms 510, respectively located on opposite sides of the blade drive ring 500, and two connecting slots 440, respectively located on opposite sides of the blade drive frame 400. This improves the stability between the blade drive frame 400 and the blade drive ring 500 without increasing the manufacturing difficulty of the camera module.

[0116] Please refer to this as well. Figures 7a to 7c Driven by the blade drive frame 400, the blade drive ring 500 rotates and drives the multiple light-blocking blades 600 to converge or separate, thereby adjusting the aperture size. Figure 7a This is a schematic diagram of the state of the camera module 1000 when the multiple light-shielding blades 600 are brought together to their extreme positions. Figure 7b This is a schematic diagram showing the state of the plurality of light-shielding blades 600 of the camera module 1000 during the separation process; Figure 7c This is a schematic diagram of the state of the camera module 1000 when the multiple light-shielding blades 600 are separated to their extreme positions.

[0117] It is understood that the blade drive ring 500, the plurality of light-shielding blades 600, and the blade support 700 together constitute an adjustable aperture. When the blade drive ring 500 is driven to rotate, it drives the plurality of light-shielding blades 600 to move, thereby changing the aperture of the adjustable aperture and adjusting the light flux that can pass through it. When the blade drive coil is energized, the rotation of the blade drive frame 400 can drive the blade drive ring 500 to rotate. The blade drive ring 500 drives the plurality of light-shielding blades 600 to converge, causing the opening formed by the plurality of light-shielding blades 600 to become smaller, reducing the amount of light entering the camera module 1000. Alternatively, the blade drive ring 500 drives the plurality of light-shielding blades 600 to separate, causing the opening formed by the plurality of light-shielding blades 600 to become larger, increasing the amount of light entering the camera module 1000. In some cases, the blade drive frame 400 may rotate due to undesirable actions or vibrations, causing unexpected changes in the amount of light entering the camera module 1000. To avoid such situations, the camera module 1000 in this embodiment also includes a blade holding component 450, which is fixed to the blade drive frame 400. The blade holding component 450 cooperates with the drive member 210 to keep the blade drive frame 400 in its initial position when the power is off. Thus, even if the blade drive frame 400 rotates due to undesirable vibrations when the blade drive coil is not energized, causing the plurality of blades 600 to move, the blade holding component 450 and the drive member 210 can cooperate to keep the blade drive frame 400 in its initial position, thereby stabilizing the position of the plurality of light-shielding blades 600 and making the size and shape of the opening formed by the plurality of light-shielding blades 600 relatively stable, thereby stabilizing the amount of light entering the camera module 1000.

[0118] Specifically, both the blade holding component 450 and the driving component 210 are magnetic components. The driving component 210 attracts the blade holding component 450 to maintain the angle of the blade driving frame 400 relative to the base 200. More specifically, in this embodiment, the driving component 210 is a magnet, and the blade holding component 450 is a magnetic yoke. The magnet attracts the magnetic yoke through magnetic force, keeping the position of the blade driving frame 400 stable relative to the base 200. In the power-off state, when undesired actions or vibrations cause the blade driving frame 400 to rotate, the blade driving frame 400 will automatically reset under the attraction of the magnet and the magnetic yoke, keeping the multiple light-shielding blades 600 in a relatively stable position, thereby maintaining the size of the aperture.

[0119] It is understood that in this embodiment, the base 200 and the blade drive frame 400 are relatively fixed in the optical axis extension direction via the attraction between the drive member 210 and the blade holding member 450. Specifically, the drive member 210 attracts the blade holding member 450, and since the blade holding member 450 is fixed to the blade drive frame 400, the blade drive frame 400 is driven by the blade holding member 450 and fixed relative to the base 200. As can be seen from the above, a plurality of spherical support members 230 are sandwiched between the base 200 and the blade drive frame 400. The spherical support members 230 can roll relative to the base 200 and the blade drive frame 400. Since the movement trajectory of the spherical support members 230 is constrained by the first receiving groove 220 and the second receiving groove 410, when the blade drive frame 400 is subjected to the Lorentz force between the drive member 210 and the second driven member 420, the blade drive frame 400 can rotate relative to the base 200 in a plane perpendicular to the optical axis with the optical axis as the rotation axis.

[0120] Optionally, there can be multiple blade holding components 450, circumferentially spaced around the blade drive frame 400. This increases the attractive force between the magnet and the yoke, improving the positional stability of the multiple light-shielding blades 600. Preferably, the length of the blade holding component 450 is not less than 20% of the length of the drive member 210. This increases the attractive force between each pair of yokes and magnets, improving the positional stability of the multiple light-shielding blades 600. Furthermore, by adjusting the length of the yoke, the magnitude of the attractive force can be changed, thereby altering the aperture's reset capability. More preferably, when the blade holding component 450 and the drive member 210 are facing each other, the line connecting the geometric center of the blade holding component 450 and the geometric center of the drive member 210 is parallel to the optical axis. This arrangement of the yoke and magnet allows for more effective utilization of magnetic force than other arrangements.

[0121] For the drive member 210 and the blade holding member 450, the magnetic force of the two is used to fix the position of the blade drive frame 400, which is similar to fixing with an elastic element (such as a spring). Therefore, the interaction force between the drive member 210 and the blade holding member 450 can be adjusted by adjusting the size, shape, position and material of the drive member 210 and the blade holding member 450, similar to adjusting the elastic coefficient of the elastic element, thereby changing the ability of the blade drive frame 400 to reset when vibrating or shaking.

[0122] It is understood that, in this embodiment, in order to reduce the manufacturing and testing difficulty of the camera module 1000, the magnets used in the drive member 210 can be magnets with completely identical specifications (such as size, shape, and material); when there are multiple first followers 310, the focusing coils used in the first followers 310 can be coils with completely identical specifications; the blade driving coils used in the second follower 420 can also be coils with completely identical specifications, and when there are multiple first followers 310, the first follower 310 and the second follower 420 can be coils with completely identical specifications; the magnetic yoke used in the blade holding member 450 can also be a magnetic yoke with completely identical specifications. In some cases, when the drive member 210 needs to use different magnets, their specifications, number, and position configuration can be adjusted by those skilled in the art according to the force conditions, and the same applies to the first follower 310, the second follower 420, and the blade holding member 450, which will not be elaborated here.

[0123] Furthermore, in order to improve the positional stability of the driving component 210, grooves with a number and contour corresponding to the driving component 210 can be provided on the base 200, and the driving component 210 can be set in the grooves one by one. The inner wall of the groove can be used to limit and fix the driving component 210. Furthermore, the connection strength between the driving component 210 and the base 200 can be strengthened by adhesive bonding. Regarding the first follower 310, when the first follower 310 is a focusing coil arranged around the outer periphery of the lens support frame 300, the lens support frame 300 can be provided with a circumferentially extending groove on its outer edge, and the first follower 310 can be placed in the circumferentially extending groove; when the first follower 310 is a plurality of focusing coils arranged at intervals around the optical axis on the lens support frame 300, a plurality of grooves with a number and contour corresponding to the plurality of focusing coils can be provided on the lens support frame 300, and the first follower 310 can be placed in the grooves one by one, with the inner wall of the groove limiting and fixing the first follower 310. Regarding the second follower 420, a plurality of grooves with a number and contour corresponding to the second follower 420 can be provided on the blade drive frame 400, and the second follower 420 can be placed in the grooves one by one, with the inner wall of the groove limiting and fixing the second follower 420. The blade holding member 450 can have the same configuration as the second follower 420. In addition, in general, the size of the blade holding member 450 is smaller than that of the second follower 420. Therefore, a groove for installing the blade holding member 450 can be opened on the inner wall of the groove for installing the second follower 420. In this way, while meeting the installation requirements of the second follower 420 and the blade holding member 450, the second follower 420 can also be used to limit the blade holding member 450 to prevent the blade holding member 450 from detaching from the blade drive frame 400.

[0124] In other feasible embodiments, the magnetic yoke can also be replaced by a magnetic fluid, the principle of which is the same as that of using a magnetic yoke, and will not be described in detail here.

[0125] Please refer to this as well. Figures 8 to 10In this embodiment, the blade drive ring 500 is provided with a plurality of through slots 520, which are arranged at intervals along the circumference of the blade drive ring 500; each through slot 520 extends from the outer edge to the inner edge of the blade drive ring 500, and the extension direction of each through slot 520 forms an angle with the radial direction of the blade drive ring 500; the plurality of light-shielding blades 600 are all arc-shaped, and one end of each of the plurality of light-shielding blades 600 is provided with a guide portion 610, which is located on the image side of the light-shielding blade 600. The guide portions 610 of the plurality of light-shielding blades 600 correspond one-to-one and can slidably extend into the through slots 520. Thus, when the blade drive ring 500 rotates, the guide part 610 slides along the through groove 520 under the constraint of the inner wall of the through groove 520, thereby changing the size and shape of the opening formed by the plurality of light-shielding blades 600, and thus changing the amount of light entering the camera module 1000.

[0126] Furthermore, the inner walls of the plurality of through slots 520 are each provided with a limiting portion 521 near the optical axis. The limiting portion 521 is used to restrict the movement range of the guide portion 610. In effect, the limiting portion 521 reduces the size of the through slot 520 near the optical axis. When the guide portion 610 moves to the limiting portion 521, it is blocked by the limiting portion 521, preventing the guide portion 610 from detaching from the through slot 520. Furthermore, the through slot 520 can also be provided with a limiting portion 521 at a position away from the optical axis, ensuring that the guide portion 610 can only slide within the through slot 520.

[0127] Optionally, the guide portion 610 may be a protrusion extending from the surface of the light-shielding blade 600. The specific shape and size of the protrusion can be set according to the actual situation. Considering the influence of resistance, the guide portion 610 can preferably be a cylindrical structure; in other feasible embodiments, the guide portion 610 can also be appropriately adjusted to other shapes.

[0128] Please refer to this as well. Figure 11In this embodiment, the blade support 700 is provided with a plurality of positioning holes 710 spaced apart along the circumference, and the other end of each of the plurality of light-shielding blades 600 is provided with a positioning part 620. The positioning part 620 is located on the object-side surface of the light-shielding blade 600, and the positioning parts 620 of the plurality of light-shielding blades 600 correspond one-to-one and can be rotatably extended into the positioning holes 710. In other words, each of the light-shielding blades 600 has a positioning part 620 on its object-side surface. The positioning part 620 can be rotatably inserted into the positioning hole 710. When the blade drive ring 500 rotates, the inner wall of the through groove 520 applies force to the guide part 610, thereby driving the light-shielding blade 600 to move. Since the other end of the light-shielding blade 600 is constrained by the blade support member 700 via the positioning part 620, but can still rotate, the multiple light-shielding blades 600 rotate around the axis of their respective positioning holes 710 to converge or separate, thereby realizing the change of aperture size.

[0129] In this embodiment, the blade drive ring 500 is circular, the light-shielding blade 600 is arc-shaped, and the length of the light-shielding blade is 30% to 60% of the circumference of the blade drive ring. This allows the light-shielding blade 600 to have sufficient length while maintaining a relatively light weight, preventing interference between different light-shielding blades 600 during their movement. In this embodiment, the plurality of light-shielding blades 600 are stacked sequentially and arranged in a ring. Specifically, the guide portion 610 of the first light-shielding blade 600 extends into one of the through grooves 520, while the positioning portion 620 at the other end extends into the positioning hole 710. The object-side surface of the end of the second light-shielding blade 600 with the guide portion 610 is attached to the image-side surface of the end of the first light-shielding blade 600 with the positioning portion 710. The guide portion 610 of the second light-shielding blade 600 extends into another through groove 520, and the positioning portion 620 of the second light-shielding blade 600 extends into another positioning hole 710. And so on, with all the light-shielding blades 600 forming a ring.

[0130] Furthermore, the orthographic projection area of ​​the light-shielding blade 600 on a plane perpendicular to the optical axis is the first area, and the orthographic projection area of ​​the fan-shaped arc formed by the edge of the light-shielding blade 600 away from the optical axis on the plane perpendicular to the optical axis is the second area; the first area is 40% to 70% of the second area. This allows for a lighter weight for the plurality of light-shielding blades 600 and also avoids interference between different light-shielding blades 600.

[0131] Optionally, the number of light-shielding blades 600 can be adjusted according to actual needs. Generally speaking, the more light-shielding blades 600 there are, the closer the opening formed by these light-shielding blades 600 will be to a circle. Considering the weight and manufacturing cost of the camera module, the number of light-shielding blades 600 can be set to five to seven.

[0132] Please refer to this again. Figure 4 and Figure 5 In this embodiment, the blade support 700 is a groove with a first central through hole 720. The groove opening of the blade support 700 faces the lens support frame 300. A drive ring pressure plate 730 is fixedly provided on the edge of the blade support 700 surrounding the groove opening. The drive ring pressure plate 730 and the blade support 700 form a blade chamber 740. The blade drive ring 500 and the plurality of light-shielding blades 600 are all located in the blade chamber 740. The drive ring pressure plate 730 is used to limit the position of the blade drive ring 500 in the optical axis direction to prevent the blade drive ring 500 from interfering with the lens 100 and hindering the rotation of the blade drive ring 500.

[0133] In this embodiment, the driving member 210, the first driven member 310, and the lens support frame 300 can constitute a focusing mechanism, and the driving member 210, the second driven member 420, the blade drive frame 400, the blade drive ring 500, and the blade support member 700 can constitute a blade drive mechanism. The driving source for both the focusing mechanism and the blade drive mechanism is the driving member 210.

[0134] In this embodiment, the camera module 1000 further includes a housing 800 with a receiving space, in which the base 200, the lens support frame 300, and the blade drive frame 400 are located. The housing 800 has a second central through-hole 810, which exposes the blade drive ring 500, the plurality of light-shielding blades 600, and the blade support member 700. The housing 800 is made of a magnetic material. The use of a magnetic material in the housing 800 allows the focusing coil, the blade drive coil, and the magnet to be enclosed in a closed magnetic circuit, improving overall magnetism.

[0135] Another embodiment of the present invention relates to a camera module 1000, such as Figure 12 As shown, the camera module 1000 in this embodiment is largely the same as that in the previous embodiment. The main difference is that the camera module 1000 in this embodiment further includes a stabilization mechanism 900 and a sensor assembly 910 disposed on the stabilization mechanism 900. The stabilization mechanism 900 is located on the image side of the base 200, and the stabilization mechanism 900 is used to drive the sensor assembly 910 to achieve stabilization.

[0136] Compared to the previous embodiment, this embodiment, in addition to enabling focusing along the optical axis and aperture adjustment via the multiple light-blocking blades 600, also utilizes the image stabilization mechanism 900 to correct shake of the sensor assembly 910 in a direction perpendicular to the optical axis, further improving the shooting effect of the camera module 1000. Furthermore, since the driving of the sensor assembly 910 by the image stabilization mechanism 900 and the driving of the lens 100 by the driving member 210 are independent of each other, changes in the driving of the driving member 210 in focusing and aperture do not affect the driving of the image stabilization mechanism 900 in image stabilization. In other words, the shake correction of the sensor assembly 910 by the image stabilization mechanism 900 does not affect the driving of the driving member 210. Thus, in the performance evaluation of the camera module 1000, the performance of the focusing mechanism, the blade driving mechanism, and the image stabilization mechanism 900 can be tested independently, reducing the testing difficulty of the camera module 1000. The camera module 1000 of the present invention improves reliability due to its simplified structure, and reduces the failure rate by improving the configuration of components.

[0137] Please refer to this as well. Figure 15 Specifically, the camera module 1000 further includes a bottom shell 820, which cooperates with the outer shell 800 to surround and fix the lens 100, focusing mechanism, blade drive mechanism, and image stabilization mechanism 900. Preferably, the bottom shell 820 may also be made of magnetic material.

[0138] In this embodiment, the image stabilization mechanism 900 includes an image stabilization base 920 and a movable bracket 930. The movable bracket 930 is located on the object side of the image stabilization base 920 and is movable relative to the image stabilization base 920 in a direction perpendicular to the optical axis. The sensor assembly 910 is fixed to the movable bracket 930. Thus, the movement of the movable bracket 930 drives the movement of the sensor assembly 910, thereby realizing the image stabilization function of the camera module 1000.

[0139] Specifically, the image stabilization base 920 is provided with a plurality of image stabilization magnets 921 spaced apart around the optical axis, and the movable bracket 930 is provided with a plurality of fixing yokes 931 spaced apart around the optical axis. At least three ball bearings 933 are sandwiched between the image stabilization base 920 and the movable bracket 930. The image stabilization magnets 921 and the fixing yokes 931 attract each other to bring the image stabilization base 920 and the movable bracket 930 closer together, thereby clamping all the ball bearings 933. The ball bearings 933 are spherical, so when the ball bearings 933 roll, the movable bracket 930 is movable relative to the image stabilization base 920.

[0140] More specifically, the image stabilization base 920 is provided with multiple first receiving slots 922, and the movable bracket 930 is provided with multiple second receiving slots (not shown in the figure). Multiple balls 933 correspond one-to-one with the multiple first receiving slots 922 and are located within the first receiving slots 922. The multiple second receiving slots also correspond one-to-one with the multiple first receiving slots 922. By using the receiving slots to accommodate the balls 933, the range of motion of the balls 933 can be limited, preventing the balls 933 from falling out and improving the stability of the camera module 1000.

[0141] In this embodiment, each of the first receiving slots 922 is provided with a first gasket 922a, and each of the second receiving slots is provided with a second gasket 932a. Both the first gasket 922a and the second gasket 932a are used to support the ball 933.

[0142] In this embodiment, the image stabilization mechanism 900 includes a coil bracket 940 fixed to the movable bracket 930. The coil bracket 940 has multiple image stabilization coils (not shown) spaced apart around the optical axis. These coils and magnets 921 correspond one-to-one and are arranged opposite each other. When energized, the image stabilization coils generate a Lorentz force with the magnets 922, causing the coil bracket 940 to move in a direction perpendicular to the optical axis. This, in turn, drives the movable bracket 930 to move synchronously. As the movable bracket 930 moves, the sensor assembly 910 follows the movement of the movable bracket 930, thereby achieving image stabilization of the camera module 1000.

[0143] In other words, the stabilization base 920 and the movable bracket 930 are relatively fixed in the optical axis extension direction by the attraction between the stabilization magnet 921 and the fixing yoke 931, while the ball bearing 933 can roll in the first receiving groove 922 and the second receiving groove, that is, the ball bearing 933 can roll relative to the stabilization base 920 and the movable bracket 930. When the movable bracket 930 is subjected to the Lorentz force between the stabilization magnet 921 and the stabilization coil, the movable bracket 930 can move relative to the stabilization base 920 in a plane perpendicular to the optical axis, thereby causing the sensor assembly 910 to move in a plane perpendicular to the optical axis, thereby achieving image stabilization.

[0144] Specifically, in this embodiment, the camera module 1000 supplies power to the plurality of image stabilization coils through the circuit board 950.

[0145] In this embodiment, the image stabilization base 920 is provided with a mounting hole 923, and a damping element 923a is provided within the mounting hole 923. The damping element 923a passes through the mounting hole 923 and contacts the bottom shell 820 and the sensor assembly 910 respectively. More specifically, the bottom shell 820 and the sensor assembly 910 clamp the damping element 923a, causing the damping element 923a to deform slightly. In this way, the damping element 923a can provide resistance when the sensor assembly 910 moves, slowing down the movement speed of the sensor assembly 910, thereby avoiding unnecessary vibration caused by the sensor assembly 910 moving too fast during image stabilization.

[0146] For example, in this embodiment, there are four mounting holes 923 and four damping elements 923a, all spaced apart around the optical axis. The damping elements 923a are made of rubber. It is understood that the number of mounting holes 923 and damping elements 923a can be other than those specified, and the damping elements 923a can also be made of silicone or other materials with a certain elasticity and capable of providing frictional resistance.

[0147] Another embodiment of the present invention provides a camera, the camera including a camera body and a camera module as described in either of the two embodiments above, the camera module being disposed on the camera body.

[0148] Another embodiment of the present invention provides an electronic device, the electronic device including a device body and a camera module as described in either of the two embodiments above, the camera module being disposed on the device body.

[0149] It is understood that the electronic device in this embodiment may be a portable terminal such as a smartphone, tablet computer, laptop computer, or smartwatch.

[0150] The camera module, camera, and electronic device provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the idea of ​​the present invention. There may be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A camera module, characterized in that, include: Lens; A base, on which a driving component is provided; A lens support frame is fitted onto the outer edge of the lens, and the driving component drives the lens support frame to move along the optical axis for focusing. A blade drive frame is rotatably mounted on the base with the optical axis as the pivot and sleeved on the outside of the lens. The drive component is also used to drive the blade drive frame to rotate. A blade drive ring is disposed on the blade drive frame and rotatably sleeved on the outside of the lens with the optical axis as the rotation axis. When the blade drive frame rotates under the drive of the drive component, it drives the blade drive ring to rotate. Multiple light-shielding blades are arranged on the blade drive ring along the circumference and spaced apart from each other. When the blade drive ring rotates, it drives the multiple light-shielding blades to converge or separate. as well as A blade support is fastened and fixed to the object side of the lens support frame. The plurality of light-shielding blades are located between the blade drive ring and the blade support. The plurality of light-shielding blades are rotatably connected to the blade support. The blade support is used to support the plurality of light-shielding blades. The base has at least three arc-shaped extending first receiving grooves on the side facing the blade drive frame, and the blade drive frame has at least three arc-shaped extending second receiving grooves on the side facing the base. The first receiving grooves and the second receiving grooves are arranged in a one-to-one correspondence and form a receiving space. Each receiving space has a spherical support member, which abuts against the inner walls of both the first receiving groove and the second receiving groove.

2. The camera module according to claim 1, characterized in that, The lens support frame is provided with a first follower, and the driving member drives the lens support frame to move along the optical axis for focusing by driving the first follower to move; the blade driving frame is provided with a second follower, and the driving member drives the blade driving frame to rotate by driving the second follower to rotate.

3. The camera module according to claim 2, characterized in that, The driving component is a magnet, the first driven component is a focusing coil, and the second driven component is a blade driving coil; When the focusing coil is energized, the magnet drives the focusing coil to move along the optical axis, thereby causing the lens support frame to move along the optical axis for focusing; when the blade drive coil is energized, the magnet drives the blade drive coil to rotate about the optical axis, thereby causing the blade drive frame to rotate about the optical axis.

4. The camera module according to claim 1, characterized in that, It also includes a blade holding component, which is fixed to the blade drive frame and is used to cooperate with the drive component to keep the blade drive frame in its initial position when the power is off.

5. The camera module according to claim 1, characterized in that, The blade drive ring is provided with multiple through slots, which are arranged at intervals along the circumference of the blade drive ring. Each through slot extends from the outer edge to the inner edge of the blade drive ring, and the extension direction of each through slot forms an angle with the radial direction of the blade drive ring. The multiple light-shielding blades are all arc-shaped, and one end of each of the multiple light-shielding blades is provided with a guide portion. The guide portion is located on the image-side surface of the light-shielding blade, and the guide portions of the multiple light-shielding blades correspond one-to-one and can slide into the through slots.

6. The camera module according to claim 5, characterized in that, The blade support is provided with a plurality of positioning holes spaced apart along the circumference. The other end of each of the plurality of light-shielding blades is provided with a positioning part. The positioning part is located on the object side of the light-shielding blade. The positioning parts of the plurality of light-shielding blades correspond one to one and can be rotatably extended into the positioning holes.

7. The camera module according to claim 1, characterized in that, The blade drive ring is provided with a connecting arm, and the blade drive frame is provided with a connecting groove. The connecting arm can slide into the connecting groove along the optical axis so that the blade drive ring and the blade drive frame are locked together.

8. The camera module according to claim 1, characterized in that, It also includes a housing with a receiving space, in which the base, the lens support frame, and the blade drive frame are located; the housing has a central through hole for exposing the blade drive ring, the plurality of light-shielding blades, and the blade support; the housing is made of a magnetic material.

9. The camera module according to any one of claims 1-8, characterized in that, It also includes an image stabilization mechanism and a sensor assembly disposed on the image stabilization mechanism, the image stabilization mechanism being located on the image side of the base, the image stabilization mechanism being used to drive the sensor assembly to achieve image stabilization.

10. A camera, characterized in that, It includes a camera body and a camera module as described in any one of claims 1-9, wherein the camera module is disposed on the camera body.

11. An electronic device, characterized in that, It includes a main body of the device and a camera module as described in any one of claims 1-9, wherein the camera module is disposed on the main body of the device.

Images