A magnet blade assembly, shutter, camera module and imaging device

Abstract

This application discloses a magnetic blade assembly, a shutter, a camera module, and an imaging device, relating to the field of optical imaging equipment technology. The magnetic blade assembly includes a connecting arm, blades, a magnet, and a counterweight. The magnet is disposed in the middle of the connecting arm, and the blades and the counterweight are respectively fixedly disposed at both ends of the connecting arm. The magnet is fixedly connected to the connecting arm or the blades. A coaxial through hole is formed on the magnet and the connecting arm for a rotating shaft to pass through. The center of gravity of the magnetic blade assembly is located at the axis of the through hole, achieving gravity self-locking. When this magnetic blade assembly is applied to a shutter, the blade state can be maintained at all times, forming a self-locking mechanism. This application aims to solve the problem of low overall holding force of existing shutter blades, thereby improving the shock resistance of the shutter.

Description

Technical Field

[0001] This application relates to the field of optical imaging equipment technology, and in particular to a magnet blade assembly, shutter, mechanism module and imaging device. Background Technology

[0002] Existing infrared shutters have a compact overall structure and a large blade rotation angle. Typically, the center of gravity of the blade is far from the axis of rotation, so the blade bears a gravitational torque. The effect of the gravitational torque is opposite to the blade holding force, which reduces the overall holding force of the blade and decreases its impact resistance.

[0003] Therefore, improving the overall blade holding capacity is a technical problem that needs to be solved by those skilled in the art in response to the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this application is to provide a magnet blade assembly to improve the overall blade holding force and enhance impact resistance.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This application provides a magnet blade assembly, including a connecting arm, blades, a magnet, and a counterweight; the magnet is disposed in the middle of the connecting arm, and the blades and the counterweight are respectively fixedly disposed at both ends of the connecting arm; the magnet is fixedly connected to the connecting arm or the blades, and a coaxial through hole is opened on the magnet and the connecting arm for a rotating shaft to pass through, and the center of gravity of the magnet blade assembly is located at the center of the through hole.

[0007] Preferably, the counterweight is integrally formed with or detachably connected to the connecting arm; and / or,

[0008] The blade is integrally formed with the connecting arm or can be detachably connected.

[0009] Preferably, a first positioning post is provided on one of the counterweight and the connecting arm, and a positioning hole is provided on the other of the counterweight and the connecting arm, wherein the first positioning post cooperates with the positioning hole for positioning; and / or,

[0010] The connecting arm is provided with a second positioning post, and the blade is provided with a through hole. The second positioning post passes through the through hole and is fixedly connected to the blade.

[0011] This application also provides a shutter, including a base, a cover plate, a rotating shaft, a magnet coil assembly, and the aforementioned magnet blade assembly; the base and the cover plate are fastened together to form a receiving space, the rotating shaft and the magnet coil assembly are both disposed within the receiving space, and the rotating shaft is fixedly connected to the base or the cover plate; the magnet blade assembly is sleeved on the rotating shaft through the coaxial through hole, and the blade extends out of the receiving space; the magnet coil assembly cooperates with the magnet, and the magnet coil assembly can drive the magnet to rotate when energized.

[0012] Preferably, the magnet coil assembly is a U-shaped iron coil assembly, including a U-shaped iron and a coil wound on it; the open end of the U-shaped iron is an arc-shaped structure, which is used to cooperate with the outer edge of the magnet, so that the magnet can rotate relative to the arc-shaped structure under the action of magnetic force.

[0013] Preferably, the device further includes a drive circuit board, which is electrically connected to the coil.

[0014] Preferably, the base is fixedly connected to the cover plate.

[0015] This application also provides a movement module, including the aforementioned shutter.

[0016] This application also provides an imaging device, including the shutter described above.

[0017] Preferably, the imaging device is a thermal imager.

[0018] Compared with the prior art, the technical solution provided in this application has at least the following beneficial effects:

[0019] This application provides a magnetic blade assembly including a connecting arm, blades, a magnet, and a counterweight. The magnet is disposed in the middle of the connecting arm, and the blades and the counterweight are respectively fixedly disposed at both ends of the connecting arm. The magnet is fixedly connected to the connecting arm or the blades. A coaxial through hole is formed on the magnet and the connecting arm for a rotating shaft to pass through. The center of gravity of the magnetic blade assembly is located at the center of the through hole. By setting the center of gravity of the magnetic blade assembly at the center of the through hole, gravity self-locking is achieved. When this magnetic blade assembly is applied to a shutter, because the center of gravity of the blades is adjusted on the rotating shaft, the gravitational torque is eliminated. The blades are only subjected to the force generated by the magnet, and because the center of gravity is at the rotating shaft, no rotational torque is generated, and the blade state can always be maintained, forming self-locking.

[0020] This application also provides a shutter, a camera module, and an imaging device, all of which use the aforementioned magnet blade assembly and have a gravity self-locking function. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the magnet blade assembly structure provided in the embodiments of this application;

[0023] Figure 2 This is an exploded view of the magnet blade assembly provided in the embodiments of this application;

[0024] Figure 3 This is a bottom view of the magnet blade assembly provided in an embodiment of this application;

[0025] Figure 4 This is a top view of the magnet blade assembly provided in an embodiment of this application;

[0026] Figure 5 Exploded shutter diagrams provided for embodiments of this application;

[0027] Figure 6 A side view of the shutter provided in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the shutter blades in situ provided in an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the shutter blade in the working position provided in an embodiment of this application;

[0030] In the picture:

[0031] 1-Base; 2-Cover plate; 3-Hinge;

[0032] 4-Magnet coil assembly; 41-U-shaped iron; 42-Coil; 411-Arc-shaped structure;

[0033] 5-Magnet blade assembly; 51-Connecting arm; 52-Blade; 521-Second positioning post; 522-Through hole; 53-Magnet; 54-Counterweight; 541-First positioning post; 542-Positioning hole;

[0034] 6-Drive circuit board; 61-Pin; 7-Second bolt. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] This application provides a magnet blade assembly 5, including a connecting arm 51, a blade 52, a magnet 53, and a counterweight 54; the magnet 53 is disposed in the middle of the connecting arm 51, and the blade 52 and the counterweight 54 are respectively fixedly disposed at both ends of the connecting arm 51; the magnet 53 is fixedly connected to the connecting arm 51 or the blade 52, and a coaxial through hole is opened on the magnet 53 and the connecting arm 51 for passing through a rotating shaft 3, and the center of gravity of the magnet blade assembly 5 is located at the center of the through hole.

[0039] In the above-mentioned magnetic blade assembly 5, by setting the center of gravity of the magnetic blade assembly 5 at the center of the through hole axis, gravity self-locking is achieved. When the magnetic blade assembly 5 is applied to the shutter, since the center of gravity of the blade 52 is adjusted on the rotating shaft 3, the gravitational torque is eliminated. The blade 52 is only subjected to the force generated by the magnet 53. And because the center of gravity is at the rotating shaft 3, no rotational torque is generated. The state of the blade 52 can always be maintained, thus forming self-locking.

[0040] In this application, the magnetic blade assembly 5 is a single unit that cannot move relative to each other. The center of gravity of the magnetic blade assembly 5 is located at the pivot 3, so that the magnetic blade assembly 5 is always locked in its current position under the action of the magnet 53.

[0041] In some embodiments, the counterweight 54 is integrally formed with or detachably connected to the connecting arm 51; and / or, the blade 52 is integrally formed with or detachably connected to the connecting arm 51.

[0042] In other embodiments, a first positioning post 541 is provided on one of the counterweight 54 and the connecting arm 51, and a positioning hole 542 is provided on the other of the counterweight 54 and the connecting arm 51. The first positioning post 541 and the positioning hole 542 are engaged for positioning. Alternatively, the connecting arm 51 is provided with a threaded hole, and the blade 52 is provided with a through hole 522. A first bolt passes through the through hole 522 and is screwed into the threaded hole. Alternatively, the connecting arm 51 is provided with a second positioning post 521, and the blade 52 is provided with a through hole 522. The second positioning post 521 passes through the through hole 522 and is fixedly connected to the blade 52. Specifically, the end of the second positioning post 521 can be melted after passing through the through hole 522 to fix the blade 52, making the structure more reliable and improving the shutter's service life.

[0043] This application also provides a shutter, including a base 1, a cover plate 2, a rotating shaft 3, a magnet coil assembly 4, and the aforementioned magnet blade assembly 5; the base 1 and the cover plate 2 are fastened together to form an accommodating space, the rotating shaft 3 and the magnet coil assembly 4 are both disposed within the accommodating space, and the rotating shaft 3 is fixedly connected to the base 1 or the cover plate 2; the magnet blade assembly 5 is sleeved on the rotating shaft 3 through the coaxial through hole, and the blade 52 extends out of the accommodating space; the magnet coil assembly 4 cooperates with the magnet 53, and the magnet coil assembly 4 can drive the magnet 53 to rotate when energized.

[0044] In some embodiments, the magnet coil assembly 4 is a U-shaped iron coil assembly, including a U-shaped iron 41 and a coil 42 wound thereon; the open end of the U-shaped iron 41 is an arc-shaped structure 411, which is used to cooperate with the outer edge of the magnet 53, so that the magnet 53 can rotate relative to the arc-shaped structure 411 under the action of magnetic force.

[0045] In one embodiment, a drive circuit board 6 is further included, which is electrically connected to the coil 42.

[0046] In one embodiment, the base 1 is fixedly connected to the cover plate 2.

[0047] This application also provides a movement module that uses the aforementioned shutter.

[0048] This application also provides an imaging device, which can be a visible light imaging device, a thermal imager, a low-light imaging device, a dual-light or multi-light imaging device, etc., with the aforementioned shutter set at the location where a shutter is required.

[0049] Please refer to Figures 1 to 4This embodiment provides a magnetic blade assembly 5, including a connecting arm 51, blades 52, a magnet 53, and a counterweight 54. The magnet 53 is disposed in the middle of the connecting arm 51, and the blades 52 and the counterweight 54 are respectively fixedly disposed at both ends of the connecting arm 51. The magnet 53 is fixedly connected to the connecting arm 51 or the blades 52. A coaxial through hole is formed on the magnet 53 and the connecting arm 51 for a rotating shaft 3 to pass through. The center of gravity of the magnetic blade assembly 5 is located at the center of the through hole. Specifically, a first through hole is formed in the middle of the magnet 53, the connecting arm 51 includes a central part, and a blade mounting part and a counterweight mounting part extending from the central part. A second through hole is formed in the central part, and the first through hole and the second through hole are coaxial through holes.

[0050] In the aforementioned magnet blade assembly 5, gravity self-locking is achieved by setting the center of gravity of the magnet blade assembly 5 at the center of the through hole axis. The magnet 53 is magnetic, has a cylindrical structure, and its magnetic poles are symmetrically distributed radially.

[0051] In one embodiment, the counterweight 54 and the connecting arm 51 are integrally formed, for example, by integral machining, or by subsequent assembly and fixed connection, such as by welding or screwing; or the counterweight 54 and the connecting arm 51 are detachably connected. In another embodiment, a first positioning post 541 is provided on one of the counterweight 54 and the connecting arm 51, and a positioning hole 542 is provided on the other of the counterweight 54 and the connecting arm 51. The first positioning post 541 and the positioning hole 542 cooperate for positioning, and can be disassembled or replaced as needed. The positioning hole 542 corresponds one-to-one with the first positioning post 541, but the number is not limited and can be set as needed. For example, when the first positioning post 541 is cylindrical, there should be more than two to avoid the counterweight 54 from rotating relative to the first positioning post 541 due to inertia when there is only one first positioning post 541, which would cause a change in the center of gravity. When the first positioning post 541 is a polygonal column, prism, or other shape, the number of first positioning posts 541 is not limited if the counterweight 54 does not shift or rotate relative to the connecting arm 51. Therefore, the requirement for the installation method of the counterweight 54 and the connecting arm 51 is that during the movement, the counterweight 54 cannot shift or rotate relative to the connecting arm 51 due to inertia. There are many ways to prevent this shift, and it is not limited to the shape and number of the first positioning posts 541. The shape of the mating surface of the first positioning post 541 and the positioning hole 542 can also be changed. The first positioning post 541 and the positioning hole 542 can also be fixed with glue or screws. The purpose is to fix them together and prevent position shift. It should be noted that the core function of the counterweight 54 is to balance the entire magnet blade assembly 5 so that the center of gravity of the assembly falls at the center of the rotating shaft 3. The key is to fix the position of the counterweight relative to the connecting arm 51. The simple first positioning post 541 and positioning hole 542 are used for positioning, which is convenient for assembly and simple for processing. Of course, there are various ways to connect the counterweight 54 and the connecting arm 51, including but not limited to the methods given above. In this way, the rotation of the magnet 53 can drive the connecting arm 51 and the counterweight 54 to rotate together. The rotation of the magnet 53 is centered on the axis of rotation 3, and the rotation of the counterweight 54 is also centered on the axis of rotation 3.

[0052] In one embodiment, there is one blade 52, which is integrally formed with the connecting arm 51, such as by integral machining, or by fixing it after assembly, such as by welding, screwing, or riveting; or the blade 52 and the connecting arm 51 are detachably connected. In another embodiment, the connecting arm 51 is provided with a second positioning post 521, and the blade 52 is provided with a through hole 522. The second positioning post 521 passes through the through hole 522 and is fixedly connected to the blade 52. Specifically, after the second positioning post 521 passes through the through hole 522, the end of the second positioning post 521 can be melted to fix the blade 52, making the structure more reliable. The second positioning post 521 and the through hole 522 correspond one-to-one, and the number is not limited. Of course, there are many ways to connect the blade 52 and the connecting arm 51, including but not limited to the methods given above, as long as the blade 52 and the connecting arm 51 are fixed to each other and do not rotate or move relative to each other. Thus, the rotation of magnet 53 can drive the connecting arm 51 and blade 52 to rotate together. In turn, the rotation of blade 52 can be controlled by controlling the rotation of magnet 53. The rotation of magnet 53 is centered on shaft 3, and the rotation of blade 52 is also centered on shaft 3.

[0053] Please refer to Figures 5 to 6 This application also provides a shutter, including a base 1, a cover plate 2, a rotating shaft 3, a magnet coil assembly 4, and the aforementioned magnet blade assembly 5; the base 1 and the cover plate 2 are fastened together to form an accommodating space, and the rotating shaft 3 and the magnet coil assembly 4 are both disposed within the accommodating space. The accommodating space is provided with a limiting groove corresponding to the magnet coil assembly 4, so that the magnet coil assembly 4 can be placed therein to prevent it from moving within the accommodating space. The rotating shaft 3 is fixedly connected to the base 1, or the rotating shaft 3 is fixedly connected to the cover plate 2. It can be integrally formed or glued, screwed, etc., as long as the rotating shaft 3 is fixedly set and will not move relative to the accommodating space; the magnet blade assembly 5 is sleeved on the rotating shaft 3 through the coaxial through hole, and the base 1 and the cover plate 2 are fastened together to form an accommodating space. The accommodating space formed by the cover plate 2 has a lateral opening, allowing the blade 52 to extend out of the accommodating space. The accommodating space formed by the cover plate 2 and the base 1 also has a limiting function for the magnet coil assembly 4 and the magnet blade assembly 5 in the height direction (i.e., the axial direction of the rotating shaft), so that the counterweight 54, which is only circumferentially positioned by the first positioning post 541, is simultaneously axially limited and will not come out of the first positioning post 541. The magnet coil assembly 4 cooperates with the magnet 53. When the magnet coil assembly 4 is energized, it can drive the magnet 53 to rotate, thereby driving the blade 52 to rotate. Therefore, the size of the lateral opening of the accommodating space must ensure that the connection end of the blade 52 and the connecting arm 51 can swing back and forth within the opening range, realizing the state switching of the blade 52 between the original position and the working position. In this embodiment, the internal space of the shutter is fully utilized, making the internal structure more compact and the layout more reasonable.

[0054] In one embodiment, the magnet coil assembly 4 is a U-shaped iron coil assembly, including a U-shaped iron 41 and a dry coil 42 wound on it. The open end of the U-shaped iron 41 is close to the magnet 53, and includes two ends, each with an arc-shaped structure 411. The two arc-shaped structures 411 are coaxial with the magnet 53 and are used to simultaneously engage with the two outer edges of the magnet 53. There is a gap between the arc-shaped structure 411 and the magnet 53, so that the magnet 53 can rotate smoothly relative to the arc-shaped structure 411 under the action of magnetic force, thereby driving the opening and closing of the blade 52. When the coil 42 is energized in the forward direction, the magnet 53 rotates at a certain angle; conversely, when the coil 42 is energized in the reverse direction, the magnet 53 rotates in the reverse direction; when the coil 42 is de-energized, the magnet 53 does not rotate, and the blade also stops at the position before the power is de-energized. Since the center of gravity is at the axis of the rotating shaft, the blade 52 will not rotate due to inertia. In one embodiment, two arc-shaped structures 411 are symmetrically arranged on both sides of the magnet, where the magnetic force is optimal. In this embodiment, only one end of the U-shaped iron 41 engages with the magnet, while the other end can be extended to a certain length as needed to meet the different number of turns requirements of the coil 42.

[0055] In one embodiment, a drive circuit board 6 is also included. The drive circuit board 6 has pins 61 for external electrical connection, such as connection to an external main control circuit board. The drive circuit board 6 is also electrically connected to the coil 42 to control the energization and de-energization of the coil 42, as well as the direction of the energized current, so as to realize the switching of the blades 52 in the shutter between the home position and the working position. Since the center of gravity of the magnetic blade assembly 5 is at the pivot 3, when the blades 52 switch between the home position and the working position, they are only controlled by the current provided by the circuit board. Unlike conventional shutters, the blades 52 will not be deflected or not strictly controlled due to inertia caused by the center of gravity. Of course, the installation position of the drive circuit board 6 is not limited. For example, it can be installed on the underside of the base 1 or on the top of the cover plate 2, as long as the drive circuit board 6 is electrically connected to the coil 42 in the magnetic coil assembly 4. Preferably, the closer the drive circuit board 6 is to the coil 42 in the magnetic coil assembly 4, the shorter the connecting wire.

[0056] In one embodiment, the base 1 is fixedly connected to the cover plate 2. During assembly, the base 1 and cover plate 2 can be fixedly connected after the shutter structure is assembled as a whole. It should be noted that the connection method is not limited; riveting, bonding, or welding are all acceptable. In one embodiment, the base 1 and cover plate 2 are fixedly connected by several second bolts 7. The cover plate 2 can limit the movement of components within the accommodating space, preventing axial upward movement.

[0057] This application also provides a mechanism module that uses the above-mentioned shutter, wherein the center of gravity of the magnet blade assembly 5 is located at the axis of the through hole, and the magnet coil assembly 4 can drive the magnet 53 to rotate after being energized.

[0058] This application also provides an imaging device, which can be a visible light imaging device, a thermal imager, a low-light imaging device, a dual-light or multi-light imaging device, and sets the above-mentioned shutter at the position where the shutter is required.

[0059] The center of gravity of the magnetic blade assembly 5 is located at the center of rotation. The blade 52 and the magnet 53 are fixed together and do not move relative to each other. Only the magnet 53 at the shaft 3 of the entire magnetic blade assembly 5 is subject to holding force. Because the center of gravity is at the center of rotation, there is no longer a rotational torque caused by the center of gravity, which keeps the blade 52 in one position and achieves self-locking.

[0060] Working principle:

[0061] When no electricity is applied, the U-shaped iron 41 is non-magnetic, while the magnet 53 is magnetic. The U-shaped iron 41 and the magnet 53 remain in their original positions due to the magnetic force of the magnet 53. Figure 7 ;

[0062] When coil 42 is energized, the two sides of U-shaped iron 41 have the same magnetism as magnet 53. Like poles repel each other, magnet 53 rotates, causing blade 52 to rotate, which in turn moves blade 52 to the working position. Figure 8 Block the light-transmitting aperture (the light-transmitting aperture is in Figure 8 (Location of blade 52);

[0063] After coil 42 is de-energized, it remains in the operating position as before. When coil 42 is re-energized, the two ends of the U-shaped iron 41 have magnetic poles in the same direction as the current magnetic poles of magnet 53. Magnet 53 rotates in the opposite direction, causing blade 52 to return to its original position. Figure 7 .

[0064] Existing infrared shutters have a compact overall structure, but the blades 52 have a large rotation angle. Typically, the center of gravity of the blades 52 is far from the axis of rotation 3, thus the blades 52 bear a gravitational torque. This gravitational torque acts in the opposite direction to the holding force of the blades 52, resulting in a decrease in the overall holding force of the blades 52 and a reduction in impact resistance. The magnetic blade assembly 5 and the shutter using this magnetic blade assembly 5 provided in this application can improve the overall holding force of the blades 52, thereby enhancing impact resistance.

[0065] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0066] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A magnet blade assembly, characterized in that, It includes a connecting arm (51), a blade (52), a magnet (53), and a counterweight (54); the magnet (53) is disposed in the middle of the connecting arm (51), and the blade (52) and the counterweight (54) are respectively fixedly disposed at both ends of the connecting arm (51); the magnet (53) is fixedly connected to the connecting arm (51) or the blade (52), and a coaxial through hole is opened on the magnet (53) and the connecting arm (51) for passing through the rotating shaft (3), and the center of gravity of the magnet blade assembly is located at the center of the through hole.

2. The magnet blade assembly according to claim 1, characterized in that, The counterweight (54) is integrally formed with or detachably connected to the connecting arm (51); and / or, The blade (52) is integrally formed with the connecting arm (51) or can be detachably connected.

3. The magnet blade assembly according to claim 2, characterized in that, A first positioning post (541) is provided on one of the counterweight (54) and the connecting arm (51), and a positioning hole (542) is provided on the other of the counterweight (54) and the connecting arm (51). The first positioning post (541) and the positioning hole (542) cooperate to position the counterweight; and / or, The connecting arm (51) is provided with a second positioning post (521), and the blade (52) is provided with a through hole (522). The second positioning post (521) passes through the through hole (522) and is fixedly connected to the blade (52).

4. A shutter, characterized in that, The device includes a base (1), a cover plate (2), a rotating shaft (3), a magnet coil assembly (4), and a magnet blade assembly (5) as described in any one of claims 1 to 3; the base (1) and the cover plate (2) are fastened together to form a receiving space, the rotating shaft (3) and the magnet coil assembly (4) are both disposed in the receiving space, and the rotating shaft (3) is fixedly connected to the base (1) or the cover plate (2); the magnet blade assembly (5) is sleeved on the rotating shaft (3) through the coaxial through hole, and the blade (52) extends out of the receiving space; the magnet coil assembly (4) cooperates with the magnet (53), and the magnet coil assembly (4) can drive the magnet (53) to rotate after being energized.

5. The shutter according to claim 4, characterized in that, The magnet coil assembly (4) adopts a U-shaped iron coil assembly, including a U-shaped iron (41) and a coil (42) wound on it; the open end of the U-shaped iron (41) is an arc-shaped structure (411) for cooperating with the outer edge of the magnet (53), so that the magnet (53) can rotate relative to the arc-shaped structure (411) under the action of magnetic force.

6. The shutter according to claim 4 or 5, characterized in that, It also includes a drive circuit board (6), which is electrically connected to the coil (42).

7. The shutter according to claim 6, characterized in that, The base (1) is fixedly connected to the cover plate (2).

8. A movement module, characterized in that, Includes the shutter as described in any one of claims 4 to 7.

9. An imaging device, characterized in that, include: The shutter as described in any one of claims 4 to 7.

10. The imaging device according to claim 9, characterized in that, The imaging device is a thermal imager.

Images