A lens barrel and a lens assembly

Abstract

The invention discloses a lens barrel and a lens assembly, and relates to the technical field of zoom lenses, wherein the lens barrel comprises a frame, a magnetic structure, a moving part and a sensor; the frame defines a mounting groove extending along a first direction, and the notch of the mounting groove is used to mount a lens group; the magnetic structure is arranged on the inner side wall of the mounting groove, and the magnetic structure forms a constant magnetic field in the mounting groove; the moving part is movably arranged in the lens barrel along the first direction, and an excitation coil is arranged on the moving part, and the excitation coil generates a dynamic magnetic field when energized, so as to interact with the constant magnetic field and drive the moving part to move; the sensor is installed on the moving part and staggered with the excitation coil, and is used to receive incident light to generate an electrical signal; the technical solution of the invention uses an electromagnetically driven sensor for rapid focusing, which greatly improves the speed and stability of zooming.

Description

Technical Field

[0001] The present invention relates to the technical field of zoom lenses, and in particular to a lens barrel and a lens assembly. Background Art

[0002] Sensor-shift zoom components usually refer to a technology used in some camera systems to achieve optical zoom. This technology is different from traditional lens zoom. Instead of adjusting the focal length by changing the position of the lens group, it achieves a similar effect by moving the image sensor.

[0003] In some compact digital cameras or smartphones, due to space constraints, traditional optical zoom lenses may be too bulky or impossible to use. Designers will use sensor movement to achieve the zoom function. This technology can reduce the thickness of the device and maintain the quality of optical zoom to a certain extent, but the sensor movement requires very precise and stable control, otherwise it will cause blurry images.

[0004] Therefore, how to improve the accuracy and stability of sensor movement has become an urgent problem to be solved in this field. Summary of the invention

[0005] The main purpose of the present invention is to provide a lens barrel and a lens assembly, aiming to improve the accuracy and stability of sensor movement.

[0006] To achieve the above-mentioned purpose, the lens barrel proposed in the present invention includes a frame, a magnetic structure, a moving part and a sensor; the frame defines a mounting groove extending along a first direction, and the notch of the mounting groove is used to mount the lens group; the magnetic structure is arranged on the inner side wall of the mounting groove, and the magnetic structure forms a constant magnetic field in the mounting groove; the moving part is movably arranged in the lens barrel along the first direction, and an excitation coil is arranged on the moving part. The excitation coil generates a dynamic magnetic field when energized, so as to interact with the constant magnetic field and drive the moving part to move; the sensor is installed on the moving part and staggered with the excitation coil, and is used to receive incident light to generate an electrical signal.

[0007] In one embodiment, a shielding member is provided between the excitation coil and the sensor.

[0008] In one embodiment, the magnet structure includes a mounting assembly and a magnetic member; the mounting assembly is fixedly mounted on the inner wall of the mounting groove; the magnetic member is fixedly connected to the mounting assembly to form a constant magnetic field in the mounting groove.

[0009] In one embodiment, the excitation coil has a coil hole extending in a first direction; the mounting assembly includes a limiting frame and a sealing member; the limiting frame is fixedly mounted on the inner wall of the mounting groove and has an opening provided in the first direction; the sealing member is adapted to the shape of the opening and is inserted through the opening, and the sealing member and the limiting frame form a limiting channel extending in a second direction; a part of the excitation coil is movably inserted through the limiting channel in the first direction.

[0010] In one embodiment, a magnetic member is disposed on the inner wall of the limiting channel, and at least a part of the mounting assembly is made of a magnetically conductive material to concentrate the constant magnetic field formed by the magnetic member.

[0011] In one embodiment, a mounting hole is provided in the side wall of the mounting groove and is offset from the excitation coil; the lens barrel further includes a locking structure, and the locking structure includes a mounting base, a limiting member, and a driving assembly; the mounting base is mounted in the mounting hole and extends towards the center of the mounting groove; the limiting member is movably mounted in the first direction to the mounting base and is located in the mounting groove for limiting the moving member when power is off; the driving assembly is drivingly connected to the limiting member for driving the limiting member to move along the first direction following the sensor and fixing the limiting member at the current position when power is off.

[0012] In one embodiment, the driving assembly includes a lead screw structure, a worm and worm gear structure, and a motor; the lead screw structure has a lead screw rotatably mounted on the mounting base and a lead screw nut for mounting the limiting member, and the lead screw extends in the first direction; the worm and worm gear structure is mounted on the mounting base, and the worm wheel of the worm and worm gear structure is drivingly connected to the lead screw; the motor is mounted on the mounting base and is drivingly connected to the worm of the worm and worm gear structure.

[0013] In one embodiment, the limiting member has two limiting portions spaced apart in the first direction, and the two limiting portions are respectively disposed on both sides of the moving member in the first direction to jointly clamp the moving member.

[0014] In one embodiment, the lens barrel further includes an image processing unit, and the image processing unit is mounted on the bottom of the mounting groove and is connected to the sensor through a flexible cable.

[0015] The present invention also provides a lens assembly, and the lens assembly includes the above lens barrel and a lens group, and the lens group is mounted at the notch of the mounting groove.

[0016] The technical solution of the present invention forms a constant magnetic field in the mounting groove through a magnet structure, and generates a dynamic magnetic field by energizing the excitation coil on the moving member. The dynamic magnetic field interacts with the constant magnetic field to drive the moving member to move. The movement of the moving member drives the sensor to move for zooming, and the electromagnetic drive is used to quickly focus the sensor, which greatly improves the speed and stability of zooming. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for describing the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 Schematic structural diagram of an embodiment of the lens barrel provided by the present invention;

[0019] Figure 2 is Figure 1 Schematic structural diagram of the internal structure of the middle lens barrel;

[0020] Figure 3 is Figure 1 Schematic structural diagram of the locking structure in.

[0021] Explanation of the reference numerals in the drawings:

[0022] 100, lens barrel; 1, frame; 11, installation groove; 111, installation hole; 2, magnet structure; 21, installation component; 211, limiting frame; 212, sealing piece; 22, magnetic force piece; 3, moving piece; 31, excitation coil; 32, shielding piece; 33, guide shaft; 4, sensor; 5, locking structure; 51, mounting seat; 52, limiting piece; 53, driving component; 531, lead screw structure; 531A, lead screw; 531B, lead screw nut; 532, worm and worm gear structure; 532A, worm gear; 532B, worm; 533, motor; 6, image processing unit; 61, flexible cable.

[0023] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Sensor-shift zoom assembly usually refers to a technology used in some camera systems to achieve optical zoom. This technology is different from traditional lens zoom. It does not adjust the focal length by changing the position of the lens group, but achieves a similar effect by moving the image sensor.

[0028] In some compact digital cameras or smartphones, due to space constraints, traditional optical zoom lenses may be too bulky or unusable. Designers will use sensor movement to achieve the zoom function. This technology can reduce the thickness of the device and maintain the quality of optical zoom to a certain extent. However, sensor movement requires very precise and stable control, otherwise it will cause blurred images. Frequent movement of the sensor may cause wear of mechanical parts, thus affecting the service life and stability of the device.

[0029] Based on this, the present invention provides a lens barrel 100. Figure 1 In one embodiment of the present invention, a lens barrel 100 includes a frame 1, a magnetic structure 2, a moving part 3 and a sensor 4; the frame 1 defines a mounting groove 11 extending along a first direction, and the notch of the mounting groove 11 is used to mount the lens group; the magnetic structure 2 is arranged on the inner side wall of the mounting groove 11, and the magnetic structure 2 forms a constant magnetic field in the mounting groove 11; the moving part 3 is movably arranged in the lens barrel 100 along the first direction, and an excitation coil 31 is arranged on the moving part 3. The excitation coil 31 generates a dynamic magnetic field when powered on, so as to interact with the constant magnetic field to drive the moving part 3 to move; the sensor 4 is installed on the moving part 3 and staggered with the excitation coil 31, and is used to receive incident light to generate an electrical signal.

[0030] The technical solution of the present invention forms a constant magnetic field in the installation groove 11 through the magnet structure 2, and generates a dynamic magnetic field by energizing the excitation coil 31 on the moving member 3. The dynamic magnetic field interacts with the constant magnetic field to drive the moving member 3 to move, and the moving member 3 drives the sensor 4 to move for zooming. Using electromagnetic drive to drive the sensor 4 for rapid focusing greatly improves the focusing speed, accuracy and stability of the sensor 4.

[0031] It should be noted that the lens group is an optical system composed of at least one lens, and these lenses cooperate together to achieve specific optical performance. Incident light enters from the notch of the installation groove 11, is refracted by the lens group and then reaches the sensor 4, and the sensor 4 receives the incident light to generate an electrical signal.

[0032] Among them, the installation groove 11 is a square groove, having two side walls opposite to each other along the second direction (perpendicular to the first direction) and two side walls opposite to each other along the third direction (perpendicular to the first direction and the second direction). There are two excitation coils 31, which are respectively arranged at the two end edges of the moving member 3 distributed along the third direction. There are two magnet structures 2, and they are respectively arranged on the two side walls of the installation groove 11 distributed along the third direction. With such a setting, the two symmetric excitation coils 31 and magnet structures 2 enable the moving member 3 to maintain the uniformity of force during the driven stroke.

[0033] The excitation coil 31 is a cylindrical or flat coil wound by an energizable enameled copper wire. When current passes through the excitation coil 31, a dynamic magnetic field will be generated. The dynamic magnetic field interacts with the constant magnetic field to make the coil move linearly along the first direction. Among them, the magnet structure 2 and the excitation coil 31 are the main structures of the VCM motor. Using the VCM motor can stably drive and improve the moving speed and accuracy of the moving member 3. Other structures of the VCM motor will not be elaborated one by one.

[0034] The incident light enters from the notch of the installation groove 11 and reaches the sensor 4 along the first direction. The sensor 4 is responsible for converting the light intensity distribution on its surface into an electrical signal and outputting the electrical signal. However, in the narrow space of the lens barrel 100, the dynamic magnetic field will generate electromagnetic interference on the electronic components on the sensor 4, thus affecting the imaging quality. For this reason, in an embodiment of the present invention, a shielding member 32 is arranged between the excitation coil 31 and the sensor 4 to reduce the influence of the dynamic magnetic field on the sensor 4.

[0035] Specifically, the material of the shielding member 32 is copper, aluminum or other magnetic conductive materials, or a mixture or stack of one or several of the above materials. The shielding member 32 is fixedly arranged on the moving member 3 and surrounds at least part of the excitation coil 31 and does not contact the excitation coil 31.

[0036] Please refer to Figure 2, in an embodiment of the present invention, the magnet structure 2 includes a mounting component 21 and a magnetic member 22; the mounting component 21 is fixedly installed on the inner wall of the mounting groove 11; the magnetic member 22 is fixedly connected to the mounting component 21 to form a constant magnetic field in the mounting groove 11. The magnetic member 22 is fixedly installed in the mounting groove 11 through the mounting component 21, so that the magnetic member 22 forms a stable constant magnetic field for stable driving.

[0037] Specifically, the magnetic member 22 is a strong magnet, and the magnetic member 22 has a strong magnetic force and can provide a stable constant magnetic field. Specifically, the strong magnet can be a neodymium iron boron magnet, a cobalt boron magnet, an alnico magnet or a soft magnet, etc. These strong magnet materials have different characteristics and application ranges. The specific selection needs to be comprehensively considered according to factors such as magnetic field strength requirements, operating temperature range, and long-term stability. In practical applications, the most suitable strong magnet material is usually selected according to specific requirements.

[0038] In an embodiment of the present invention, the exciting coil 31 has a coil hole extending in a first direction; the mounting component 21 includes a limiting frame 211 and a sealing member 212; the limiting frame 211 is fixedly installed on the inner wall of the mounting groove 11 and has an opening arranged in the first direction; the sealing member 212 is adapted to the shape of the opening and is inserted through the opening. The sealing member 212 and the limiting frame 211 form a limiting channel extending in a second direction; a part of the exciting coil 31 is movably inserted through the limiting channel in the first direction. With such a setting, the entire lens barrel 100 is made more compact, reducing the volume and size of the system, and improving the integration and space utilization rate of the system; the extending direction of the coil hole is perpendicular to that of the limiting channel, and the coil hole and the limiting channel penetrate each other, so the energy transmission and conversion efficiency is higher, reducing energy loss and waste, enabling the action of the electromagnetic force to be transmitted more quickly, and improving the fast response ability of the system.

[0039] Furthermore, the limiting frame 211 includes two extending segments extending in the first direction and a connecting segment connecting the two extending segments, forming a U-shaped frame body. Among the two extending segments, one extending segment is fixedly installed on the inner wall of the mounting groove 11, and the other extending segment is for the exciting coil 31 to be sleeved; the shape of the sealing member 212 is cross-shaped, having two end portions in a third direction and two end portions in a second direction. Grooves are provided at the end portions of each extending segment close to the opening for the two end portions of the sealing member 212 in the third direction to pass through. With such a setting, when it is necessary to install or replace the sensor 4, the sealing member 212 is taken out from the groove, the exciting coil 31 is sleeved on one extending segment of the limiting frame 211, and then the sealing member 212 is placed into the groove.

[0040] In an embodiment of the present invention, the magnetic member 22 is disposed on the inner wall of the limiting channel, and at least a part of the mounting assembly 21 is made of a magnetic conductive material to guide and concentrate the constant magnetic field formed by the magnetic member 22. With this arrangement, it can be ensured that the exciting coil 31 generates sufficient force in the constant magnetic field to achieve precise displacement control.

[0041] Among them, the magnetic conductive material is a material with high magnetic permeability. Under the action of the constant magnetic field, the tiny magnetic fields in the magnetic conductive material tend to be arranged in the same direction as the constant magnetic field direction, thereby guiding and concentrating the constant magnetic field formed by the magnetic member 22 and enhancing the effect of the constant magnetic field.

[0042] It should be noted that the magnetic conductive material can be a sodium calcium perovskite material, which has excellent magnetic permeability and low magnetic hysteresis loss, and can effectively reduce the energy loss of the magnetic field. The magnetic conductive material can also be a ferrite material with good magnetic properties and high magnetic induction intensity. The magnetic conductive material can also be a nickel-iron alloy material with high magnetic permeability and high saturation magnetic induction intensity. In low-frequency and medium-frequency electromagnetic drive applications, the magnetic conductive material can also be an iron-based soft magnetic material.

[0043] Furthermore, please refer to Figure 1 , the moving member is limited by arranging a guide shaft 33. A guide shaft 33 extending in the first direction is fixedly arranged at the bottom of the mounting groove 11. The moving member 3 is a rectangular plate. Parts of both ends of the body of the moving member 3 arranged in the second direction extend in the second direction, and the extending directions are opposite to form two wings. The two wings and the body of the moving member 3 form a Z-shaped plate. The guide shaft 33 passes through the wings to limit the moving member 3, so that the moving member 3 and the sensor 4 thereon only move in the first direction, reducing the error caused by the offset of the sensor 4.

[0044] In another embodiment, the moving member 3 is limited by arranging a guiding mechanism. The guiding mechanism includes a guide rail, a slider and a rolling part. The guide rail is arranged on the inner wall of the mounting groove 11 and extends in the first direction. The slider is arranged on the moving member 3 and is recessed with a chute slidably matched with the guide rail. The rolling part is arranged between the inner wall of the chute and the guide rail, making the moving member 3 move more smoothly relative to the frame 1 in the first direction. It should be noted that the rolling part can be a ball, or a needle roller, a roller, etc. These rolling parts are all devices that use rolling motion to transmit force and reduce friction.

[0045] When the exciting coil 31 is energized, it drives the moving member 3. When the power is off, the dynamic magnetic field disappears, and the moving member 3 will shake in the first direction at this time, resulting in contact and friction between the exciting coil 31 and the magnetic member 22. Long-term use will cause wear, which will in turn affect the performance and life of the motor. Based on this, please refer to Figures 1 to 3In one embodiment of the present invention, the side wall of the mounting groove 11 is provided with a mounting hole 111 staggered from the excitation coil 31; the lens barrel 100 also includes a locking structure 5, the locking structure 5 includes a mounting seat 51, a stopper 52 and a driving assembly 53; the mounting seat 51 is installed in the mounting hole 111 and extends toward the center of the mounting groove 11; the stopper 52 is movably installed to the mounting seat 51 along a first direction and is located in the mounting groove 11, so as to limit the moving member 3 when the power is off; the driving assembly 53 drives the connection stopper 52, so as to drive the stopper 52 to follow the sensor 4 to move along the first direction and fix the stopper 52 at the current position when the power is off. When the excitation coil 31 is energized, the stopper 52 moves with the moving member 3, and when the power is off, the stopper 52 can reduce the shaking of the moving member 3, and the embedded structure of the mounting seat 51 is arranged in the mounting hole 111 to reduce the internal volume occupied by the lens barrel 100, thereby reducing the volume of the lens barrel 100, saving materials and costs.

[0046] Specifically, the mounting hole 111 is opened on a side wall of the mounting slot 11 arranged along the second direction to be staggered with the excitation coil 31 .

[0047] In one embodiment of the present invention, the driving assembly 53 includes a lead screw structure 531, a worm gear structure 532 and a motor 533; the lead screw structure 531 has a lead screw 531A rotatably mounted on the mounting seat 51 and a lead screw nut 531B for mounting the limiter 52, and the lead screw 531A extends along a first direction; the worm gear structure 532 is mounted on the mounting seat 51, and the worm wheel 532A of the worm gear structure 532 is drivingly connected to the lead screw 531A; the motor 533 is mounted on the mounting seat 51, and is drivingly connected to the worm 532B of the worm gear structure 532. When the excitation coil 31 is energized to drive the moving part 3 to move, the motor 533 rotates synchronously and drives the limiter 52 to move with the moving part 3 through the transmission of the worm gear structure 532 and the lead screw structure 531. When the excitation coil 31 is powered off, the worm gear structure 532 locks the moving part 3, thereby limiting the moving part 3 and reducing the shaking of the moving part 3.

[0048] In one embodiment of the present invention, the limiting member 52 has two limiting portions spaced apart along the first direction, and the two limiting portions are disposed on both sides of the moving member 3 along the first direction to jointly clamp the moving member 3. The limiting member 52 is configured in a clamping claw shape to better fix the moving member 3.

[0049] In one embodiment, the distance between the two limiting parts is greater than the thickness of the moving member 3 along the first direction to prevent the limiting member 52 driven by the motor 533 from being out of sync with the limiting member 52 driven by the excitation coil 31 and the magnetic structure 2.

[0050] Furthermore, a buffer portion is provided on the surface of the moving member 3 , and the buffer portion can be set to rubber to play a role of buffering and shock absorption to avoid the phenomenon of the moving member 3 and the limiting member 52 being out of sync due to insufficient precision of the motor 533 .

[0051] In another embodiment, the two limiting portions are relatively movable and are offset from the moving part 3 when the excitation coil 31 is energized, and are close to each other to clamp the moving part 3 together when the excitation coil 31 is de-energized.

[0052] In one embodiment of the present invention, the lens barrel 100 further includes an image processing unit 6, which is mounted at the bottom of the mounting slot 11 and connected to the sensor 4 via a flexible cable 61. In this way, the image processing unit 6 receives the electrical signal generated by the moving sensor 4 and performs a series of processing on the electrical signal to generate a final image.

[0053] The flexible cable 61 refers to a type of cable that can be bent and moved within a certain range without affecting its electrical performance. The design of this type of cable allows it to be used in mechanical movements while maintaining the reliability and integrity of signal transmission. Specifically, it is a soft flat cable, which is composed of one or more layers of flexible insulating material and one or more layers of conductive material and can be bent and folded freely. In this way, when the moving member 3 moves along the first direction, the sensor 4 can always be electrically and stably connected to the image processing unit 6.

[0054] In addition, the lens barrel 100 further includes a feedback unit 7 for sensing the position of the moving part 3. In one embodiment, the feedback unit 7 includes a magnetic scale installed on the inner wall of the installation slot 11 and a reader installed on the moving part 3. The reader detects the magnetic field change on the magnetic scale, converts the magnetic field change into an electrical signal, and then calculates the specific position information. The position feedback unit 7 measures the position of the moving part 3 in real time to obtain the current position of the moving part 3 for feedback adjustment. When the moving part 3 moves to the target position, the excitation coil 31 is controlled to be de-energized.

[0055] The present invention also provides a lens assembly, which includes the lens barrel 100 and a lens group. The specific structure of the lens barrel 100 refers to the above embodiment. Since the lens assembly adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the lens group is installed in the notch of the installation groove 11.

[0056] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lens barrel, characterized in that, include: The frame defines a mounting groove extending along a first direction, wherein the notch of the mounting groove is used for mounting the lens assembly; A magnet structure, disposed on the inner side wall of the installation slot, the magnet structure forms a constant magnetic field in the installation slot; A moving member is movably disposed in the lens barrel along a first direction, and an excitation coil is disposed on the moving member. When energized, the excitation coil generates a dynamic magnetic field to interact with the constant magnetic field to drive the moving member to move; and A sensor, mounted on the moving part and staggered with the excitation coil, for receiving incident light to generate an electrical signal; The side wall of the mounting groove is provided with a mounting hole staggered with the excitation coil; The lens barrel further comprises a locking structure, wherein the locking structure comprises: A mounting seat, mounted in the mounting hole and extending toward the center of the mounting slot; a limiting member, movably mounted to the mounting seat along a first direction and located in the mounting groove, for limiting the moving member when power is off; and A driving assembly, drivingly connected to the limiting member, for driving the limiting member to follow the sensor to move along the first direction and to fix the limiting member at a current position when power is off; The drive assembly comprises: A lead screw structure, comprising a lead screw rotatably mounted on the mounting seat and a lead screw nut for mounting the limiter, wherein the lead screw extends along a first direction; A worm gear structure is mounted on the mounting seat, wherein the worm gear of the worm gear structure is drivingly connected to the lead screw; and A motor, mounted on the mounting seat, and drivingly connected to the worm of the worm gear structure; The limiting member has two limiting parts spaced apart along a first direction, the distance between the two limiting parts is greater than the thickness of the moving member along the first direction, and a buffer part is provided on one side of each limiting part facing the other limiting part.

2. The lens barrel according to claim 1, characterized in that, A shielding member is arranged between the excitation coil and the sensor.

3. The lens barrel according to claim 1, wherein The magnet structure comprises: An installation component is fixedly installed on the inner wall of the installation groove; and A magnetic member is fixedly connected to the mounting assembly to form a constant magnetic field in the mounting groove.

4. The lens barrel according to claim 3, characterized in that, The excitation coil has a coil hole extending along a first direction; The installation assembly includes: a limiting frame, fixedly mounted on the inner wall of the mounting groove, having an opening arranged along a first direction; and A sealing member, adapted to the shape of the opening, and inserted into the opening, wherein the sealing member and the limiting frame form a limiting channel extending along the second direction; A part of the excitation coil is movably arranged in the limiting channel along a first direction.

5. The lens barrel according to claim 4, wherein The magnetic piece is arranged on the inner wall of the limiting channel, and the mounting assembly is at least partially arranged to be a magnetic conductive material to concentrate the constant magnetic field formed by the magnetic piece.

6. The lens barrel according to claim 1, wherein, The limiting member has two limiting portions spaced apart along a first direction, and the two limiting portions are arranged at two sides of the moving member along the first direction to jointly clamp the moving member.

7. The lens barrel according to claim 1, characterized in that, The lens barrel further comprises an image processing unit, which is installed at the bottom of the installation slot and connected to the sensor via a flexible cable.

8. A lens assembly, characterized in that, The lens assembly comprises: The lens barrel according to any one of claims 1 to 7, and The mirror assembly is installed in the notch of the installation slot.

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