Shutter structure and infrared lens

Abstract

The utility model discloses a shutter structure and an infrared lens, and relates to the technical field of optical imaging equipment, the shutter structure comprises a magnet and an electromagnet matched with the magnet and driving the magnet to rotate, the electromagnet comprises an iron core integrally in a strip shape and a plurality of coils wound around the periphery of the iron core, one end of the iron core is close to the magnet, and the other end of the iron core is close to the infrared lens. One end of the iron core close to the magnet is provided with an arc surface coaxial with the magnet, the middle part of the iron core is provided with a winding groove for accommodating a coil, the other end of the iron core extends towards the direction far away from the magnet, and two ends of the iron core are provided with positioning holes for positioning and mounting. The problems that the number of turns of coils of a traditional shutter electromagnet is difficult to adjust, positioning is difficult, the positioning effect is poor, and the occupied space is large are solved, and the design and assembly of the shutter structure are more concise and flexible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging equipment, in particular to a shutter structure and an infrared lens. BACKGROUND

[0002] The electromagnet of the existing shutter structure is usually in U-shaped or L-shaped, both the U-shaped electromagnet and the L-shaped electromagnet have magnetic poles at both ends, and a magnet is arranged at the end magnetic pole, which drives the magnet to rotate by using the principle of same polarity repulsion and different polarity attraction, thereby realizing the opening and closing of the shutter.

[0003] However, due to the limitation of the U-shaped structure of the U-shaped electromagnet, it is difficult to position and install, and a corresponding groove structure is usually needed to limit the position of the U-shaped structure, and after the U-shaped structure is shaped, the number of turns of the coil wound on the U-shaped electromagnet cannot be changed, and it is not easy to adjust the magnetic force according to the number of turns; in addition, the U-shaped electromagnet usually needs to position the coil through a wire frame when winding the coil, which increases the step of assembling the wire frame on the U-shaped electromagnet, and also needs to position the wire frame, which is complex and has poor positioning effect.

[0004] Although the L-shaped electromagnet is convenient to adjust the number of turns of the coil, and can be positioned by opening positioning holes, the L-shaped electromagnet usually needs to be used in cooperation with two, which has a certain symmetry, and the magnet is arranged between the ends of the two L-shaped electromagnets, which occupies more peripheral space of the shutter structure and limits the internal space layout of the shutter structure.

[0005] Therefore, in view of the above technical problems, how to optimize the electromagnet of the shutter structure is a technical problem to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the present application is to provide a shutter structure and an infrared lens, which solves the problems of the traditional shutter structure, such as difficult adjustment of the number of turns of the electromagnet coil, difficult positioning, poor positioning effect, and large space occupation, and makes the design and assembly of the shutter structure more simple and flexible.

[0007] To achieve the above purpose, the present application provides a shutter structure, which comprises a magnet and an electromagnet cooperating with the magnet and driving the magnet to rotate, the electromagnet comprising a strip-shaped core and a plurality of turns of coils wound on the outer periphery of the core, one end of the core being close to the magnet, and the end close to the magnet having a circular arc surface coaxial with the magnet, a winding groove for accommodating the coils being arranged in the middle of the core, the other end of the core extending away from the magnet, and positioning holes for positioning and installation being arranged at both ends of the core.

[0008] Preferably, a base is further included, the base is provided with an eccentric light hole, and the base is further provided with a receiving groove for accommodating the electromagnet and the magnet, the axis direction of the magnet is the same as the axis direction of the light hole, and the bottom of the receiving groove is provided with a plurality of positioning pins extending along the axis direction of the magnet, the positioning pins include a first positioning pin and a second positioning pin inserted into the two positioning holes.

[0009] Preferably, the number of electromagnets is two, the two electromagnets are distributed on both sides of the magnet, the two electromagnets have magnetic poles of opposite polarity at one end of the circular arc surface, and the two magnetic poles of the magnet are distributed in the radial direction.

[0010] Preferably, the positioning hole includes a circular hole and a first waist-shaped hole, the circular hole is arranged at one end of the iron core close to the circular arc surface, the first waist-shaped hole is arranged at the other end of the iron core, the opening directions of the first waist-shaped hole and the circular hole are consistent with the axis direction of the magnet, and the hole wall of the first waist-shaped hole in the length direction abuts against the outer wall of the positioning pin to limit the rotation of the iron core with the axis of the circular hole as the rotation axis.

[0011] Preferably, the positioning pin further includes a third positioning pin matched with the magnet, and the magnet is rotationally arranged on the third positioning pin.

[0012] Preferably, the magnet includes:

[0013] The magnet is cylindrical, the magnetic poles of the magnet are matched with the magnetic poles of the iron core, and a first center hole is arranged in the middle of the magnet.

[0014] The swing part includes a main body on the upper side of the magnet, the main body is provided with a connecting column extending into the first center hole and fixedly connected with the magnet, the main body is further provided with a swing shaft extending in the radial direction parallel to the magnet, and a swing pin is arranged on the extension end of the swing shaft and protrudes upward, and the connecting column is provided with a second center hole rotationally matched with the third positioning pin.

[0015] Preferably, a vane is further arranged on the upper side of the base, the vane is provided with an axis hole rotationally matched with the base, the vane is further provided with a second waist-shaped hole, the swing pin is inserted into the second waist-shaped hole to drive the vane to rotate with the axis of the axis hole as the rotation axis, so as to shield or open the light hole.

[0016] Preferably, a gasket is arranged between the vane and the base, a cover plate is arranged on the upper side of the vane and fixedly connected with the base, and the gasket and the cover plate are both provided with a light transmission hole corresponding to the position and contour of the light hole.

[0017] Preferably, the gasket and the cover plate are respectively provided with a first through hole and a second through hole corresponding to the position of the shaft hole, and the gasket and the cover plate are respectively provided with a first arc-shaped hole and a second arc-shaped hole, the swing pin penetrates the first arc-shaped hole, the second waist-shaped hole and the second arc-shaped hole in sequence, and the swing pin reciprocates within the arc-shaped range of the first arc-shaped hole and the second arc-shaped hole.

[0018] An infrared lens, comprising:

[0019] A lens barrel;

[0020] A plurality of lenses arranged in sequence along the lens barrel in the lens barrel;

[0021] A shutter structure, which is located between two adjacent lenses.

[0022] Compared with the prior art, the technical scheme provided by the application has at least the following beneficial effects:

[0023] The electromagnet of the shutter structure is in a strip shape as a whole, only one end of which cooperates with the magnet, and the other end can be extended by a certain length according to actual needs, so as to meet different coil turns, at the same time, the electromagnet is not affected by the U-shaped structure, and the coil turns can be increased by increasing the winding thickness, so that the electromagnet has the advantage of flexible adjustment of magnetic force; in addition, the winding groove is arranged in the middle of the iron core, and the wire is directly wound on the iron core, so that the iron core and the coil form an independent and inseparable module, replacing the wire rack structure of the U-shaped electromagnet, and the conventional assembly wire rack step and wire rack positioning problem are saved, so that the winding length and wire connection mode of the coil become simple and flexible. Moreover, the electromagnet of the application can be directly positioned by positioning holes at both ends, and the positioning effect is good; the strip-shaped electromagnet can also avoid the problem of large occupied space caused by the bending of the L-shaped electromagnet, so that the shutter design structure layout is more flexible. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor.

[0025] Figure 1 The shutter structure explosion diagram provided by the embodiment of the application;

[0026] Figure 2 The iron core structure schematic diagram provided by the embodiment of the application;

[0027] Figure 3A schematic diagram of a magnet structure provided by the embodiment of the present application;

[0028] Figure 4 A schematic diagram of a base structure provided by the embodiment of the present application;

[0029] Figure 5 A schematic diagram of a light hole shielding state provided by the embodiment of the present application;

[0030] Figure 6 A schematic diagram of a light hole opening state provided by the embodiment of the present application.

[0031] In the figure:

[0032] 1 - base; 11 - light hole; 12 - accommodating groove; 13 - second positioning pin; 14 - first positioning pin; 15 - third positioning pin;

[0033] 2 - electromagnet; 21 - iron core; 211 - circular arc surface; 212 - circular hole; 213 - winding groove; 214 - first waist-shaped hole;

[0034] 3 - magnet; 31 - magnet; 32 - first center hole; 33 - main body; 34 - connecting column; 35 - second center hole; 36 - swing shaft; 37 - swing pin;

[0035] 4 - gasket; 41 - first arc-shaped hole; 42 - first through hole;

[0036] 5 - blade; 51 - second waist-shaped hole; 52 - shaft hole;

[0037] 6 - cover plate; 61 - second arc-shaped hole; 62 - second through hole; 63 - light hole. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] It should be noted that in the present embodiment, the directions or position relationships indicated by "up", "down", "front", "back" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In order to make the person skilled in the art better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0041] Please refer to Figure 1 and Figure 2 In the embodiment, a shutter structure is provided, which generally comprises a magnet 3 and an electromagnet 2 matched with the magnet 3. The electromagnet 2 generates a magnetic pole after being powered on. The magnetic pole on the electromagnet 2 and the magnetic pole of the magnet 3 utilize the principle of repelling each other or attracting each other, drive the magnet 3 to rotate, and then drive the corresponding blade 5 to move through the rotation of the magnet 3, so as to achieve the purpose of opening or closing the shutter.

[0042] The electromagnet 2 of the present application is in a strip shape as a whole, comprising a core 21 and a plurality of turns of coils wound outside the core 21. One end of the core 21 is close to the magnet 3. Compared with the traditional U-shaped electromagnet and L-shaped electromagnet, only one end of the electromagnet 2 of the present application interacts with the magnet 3, and the other end can be flexibly adjusted, so as to meet the requirements of coils with different turns. In addition, compared with the technical solution that both ends of the traditional U-shaped electromagnet and L-shaped electromagnet cooperate with the magnet 3, the concentricity of the electromagnet 2 and the magnet 3 is more easily guaranteed on the basis of the interaction of one end of the electromagnet 2 with the magnet 3. The adjustment of the length of the electromagnet 2 will not cause the traditional U-shaped electromagnet and L-shaped electromagnet to fail to guarantee the concentricity with the magnet 3.

[0043] Compared with the traditional U-shaped electromagnet, the strip-shaped electromagnet is easier to position. Positioning holes can be provided at both ends of the core 21, which cooperate with the positioning pins on the base 1, so as to realize positioning installation. Compared with the traditional L-shaped electromagnet, the electromagnet 2 of the present application avoids occupying the peripheral space of the shutter structure due to bending, which is convenient for the layout of the internal space of the shutter structure.

[0044] One end of the core 21 close to the magnet 3 is provided with a circular arc surface 211 coaxial with the magnet 3. Please refer to Figure 2 The magnetic pole at the circular arc surface 211 interacts with the magnetic pole of the magnet 3; specifically, when the coil on the electromagnet 2 is not powered on, the both ends of the core 21 have no magnetism, and the magnet 3 is kept in the current state by magnetic attraction with the core 21; when the coil is powered on, the both ends of the core 21 have magnetic poles, which repel each other with the magnetic pole on the magnet 3, and make the magnet 3 rotate a certain angle on the basis of the fixed setting of the electromagnet 2; conversely, when the coil is reversely powered on, the magnet 3 reversely rotates.

[0045] Please refer to Figure 2In the middle of the iron core 21, a winding slot 213 for accommodating the coil is arranged, which replaces the traditional wire rack structure of the U-shaped electromagnet, and the conventional wire rack, the step of assembling the wire rack and the positioning problem of the wire rack are omitted, so that the shutter design structure layout, the winding length and the wire connection mode become simple and flexible. In addition, the winding is directly wound on the iron core 21, so that the iron core 21 and the coil form an independent and inseparable module.

[0046] In addition, when the arc surface 211 of the iron core 21 cooperates with the magnet 3, a certain wrap angle is formed, that is, the angle of the arc surface 211 wrapping the magnet 3, and to a certain extent, the larger the wrap angle, the better the magnetic force. When the two arc surfaces 211 are symmetrically arranged on both sides of the magnet 3, the magnetic force is optimal. The traditional U-shaped electromagnet needs to be sleeved with a wire rack on the winding arm of the U-shaped iron, so the arc surfaces 211 at both ends of the U-shaped electromagnet are not symmetrical. The arc surface 211 at one end forms a smaller wrap angle to facilitate the sleeving of the wire rack, which results in that the magnetic force cannot reach the optimal effect. And due to the need to sleeve the wire rack, the wrap angle formed by the arc surface 211 of the U-shaped electromagnet is not easy to adjust. The electromagnet 2 of the present application only has one end acting on the magnet 3 and does not need to be installed with a wire rack, so the wrap angle formed by the arc surface 211 can be adjusted according to the actual situation, and the arc surface 211 can also be symmetrically arranged on both sides of the magnet 3 to ensure the magnetic force between the electromagnet 2 and the magnet 3.

[0047] In summary of the above embodiments, the electromagnet 2 of the shutter structure of the present application is in a strip shape, only one end cooperates with the magnet 3, and the other end can be extended by a certain length according to actual needs, so as to meet different coil turns. At the same time, the electromagnet 2 is not affected by the U-shaped structure, and the coil turns can be increased by increasing the winding thickness. The electromagnet 2 has the advantage of flexible adjustment of the magnetic force. In addition, the winding slot 213 is arranged in the middle of the iron core 21, and the winding is directly wound on the iron core 21, so that the iron core 21 and the coil form an independent and inseparable module, which replaces the wire rack structure of the U-shaped electromagnet, and the conventional assembly step of the wire rack and the positioning problem of the wire rack are omitted, so that the winding length and the wire connection mode of the coil become simple and flexible. In addition, the electromagnet 2 of the present application can be directly positioned by the positioning holes arranged at both ends, and the positioning effect is good. The use of the strip-shaped electromagnet can also avoid the problem of large space occupation caused by the bending of the L-shaped electromagnet, so that the shutter design structure layout is more flexible.

[0048] Please refer to Figure 1 and Figure 4The shutter structure of the application further comprises a base 1, the base 1 is provided with an eccentric light hole 11, and the base 1 is further provided with a containing groove 12 for containing the electromagnet 2 and the magnet 3. Through the eccentric arrangement, the internal space of the shutter structure can be fully utilized, and the internal structure is more compact and the layout is more reasonable. The axial direction of the magnet 3 is the same as the axial direction of the light hole 11, and the bottom of the containing groove 12 is provided with a plurality of positioning pins extending along the axial direction of the magnet 3. The positioning pins include a first positioning pin 14 and a second positioning pin 13 inserted into two positioning holes.

[0049] In some embodiments, in order to realize the symmetrical distribution of the two circular arc surfaces 211 on both sides of the magnet 3, the number of electromagnets 2 can be set to two, and the two electromagnets 2 are distributed on both sides of the magnet 3 and embedded in the containing groove 12. The two electromagnets 2 have opposite magnetic poles at one end of the circular arc surface 211, and the two magnetic poles of the magnet 3 are distributed along the radial direction. When the coil of the electromagnet 2 is energized, the two cores 21 have different magnetic poles at one end of the circular arc surface 211, and the magnetic poles of the two cores 21 repel each other with the magnetic poles on the magnet 3, so that the magnet 3 rotates by a certain angle; on the contrary, when the coil is reversely energized, the magnet 3 reversely rotates.

[0050] Please refer to Figure 2 , the positioning hole includes a circular hole 212 and a first waist-shaped hole 214, the circular hole 212 and the first waist-shaped hole 214 are respectively inserted into the first positioning pin 14 and the second positioning pin 13, the circular hole 212 is arranged at one end of the core 21 close to the circular arc surface 211, and the first waist-shaped hole 214 is arranged at the other end of the core 21; the opening directions of the first waist-shaped hole 214 and the circular hole 212 are consistent with the axial direction of the magnet 3, the cooperation of the circular hole 212 and the first positioning pin 14 can limit the freedom of the core 21 except the rotation freedom, and the cooperation of the first waist-shaped hole 214 and the second positioning pin 13 can limit the rotation freedom of the core 21, so that the electromagnet 2 is fixedly arranged on the base 1. The hole wall of the first waist-shaped hole 214 in the length direction abuts against the outer wall of the second positioning pin 13, so as to limit the rotation of the core 21 with the axis of the circular hole 212 as the rotation axis.

[0051] Compared with the positioning mode of two round holes 212, the positioning mode of one round hole 212 and one waist-shaped hole can reduce the assembly difficulty of the positioning hole and the positioning pin. For example, the positioning mode of two round holes 212 requires that the machining precision of the two round holes 212 and the positioning pin are completely consistent. If the distance between the two round holes 212 deviates, the two round holes 212 cannot be perfectly matched with the two positioning pins, which affects the assembly of the electromagnet 2. However, the positioning mode of the round hole 212 and the waist-shaped hole can provide a certain surplus in the length direction of the waist-shaped hole, which ensures that the first waist-shaped hole 214 can reduce the assembly difficulty through the surplus on the basis of the assembly of the round hole 212 and the first positioning pin 14, and also ensures the stability of the electromagnet 2 after assembly.

[0052] In addition, please refer to Figure 4 , the positioning pin further comprises a third positioning pin 15 matched with the magnet 3, and the magnet 3 is rotatably arranged on the third positioning pin 15. Specifically, the magnet 3 comprises a magnetic stone 31 and a swing part, the magnetic stone 31 itself has magnetism, the magnetic stone 31 is in a columnar structure, and the magnetic poles of the magnetic stone 31 are symmetrically distributed along the radial direction. Therefore, the magnetic poles of the magnetic stone 31 can be matched with the magnetic poles of the electromagnet 2 to drive the magnet 3 to rotate.

[0053] A first center hole 32 is formed in the middle of the magnetic stone 31, the swing part comprises a main body 33 located on the upper side of the magnetic stone 31, the main body 33 is provided with a connecting column 34 extending into the first center hole 32 and fixedly connected with the magnetic stone 31, and the connecting column 34 can be fixed by adhesion, screw connection or the like. The connecting column 34 is provided with a second center hole 35 rotatably matched with the third positioning pin 15. Figure 3 The main body 33 is further provided with a swing shaft 36 extending along the radial direction parallel to the magnetic stone 31, and the extending end of the swing shaft 36 is provided with a swing pin 37 protruding upward. Of course, there can be various ways for the swing part and the magnetic stone 31, including but not limited to the above-mentioned way.

[0054] The shutter structure of the present application further comprises a blade 5 arranged on the upper side of the base 1. Please refer to Figure 1 The blade 5 is provided with an axial hole 52 rotatably matched with the base 1, the number of the blade 5 is one, and the blade 5 is further provided with a second waist-shaped hole 51 in which the swing pin 37 is inserted. When the magnetic stone 31 rotates to drive the swing pin 37 to swing, the swing pin 37 can drive the blade 5 to rotate around the axial hole 52, so as to realize the shielding or opening of the light passing hole 11.

[0055] And since the light passing hole 11 is eccentrically arranged on the base 1, the other side of the base 1 has enough space for temporarily storing the blade 5, so that the blade 5 can completely separate from the light passing hole 11, and the light passing hole 11 is completely opened.

[0056] In some embodiments, the base 1 can be circular or square as a whole, and the angle between the two electromagnets 2 can be set according to actual needs.

[0057] A gasket 4 is arranged between the blade 5 and the base 1, which can avoid the direct contact between the blade 5 and the base 1, and reduce the friction loss between the blade 5 and the base 1 due to relative movement. The upper side of the blade 5 is provided with a cover plate 6 fixedly connected with the base 1, which can assemble the blade 5, the gasket 4, the magnet 3, the electromagnet 2, etc. in the base 1, so as to form a complete and stable shutter structure. The gasket 4 and the cover plate 6 are both provided with a light transmission hole 63 corresponding to the position and contour of the light transmission hole 11.

[0058] It should be pointed out that the cover plate 6 can be fixed by riveting the top surface and the side edge with the base 1 at the same time. The cover plate 6 can limit the electromagnet 2 to prevent the electromagnet 2 from moving axially in the circular hole 212, thereby improving the fixing effect of the electromagnet 2.

[0059] For the fixing mode of the gasket 4, the gasket 4 can be limited by the protruding structure of the outer edge of the base 1, that is, the gasket 4 is embedded on the upper surface of the base 1, and the outer edge of the base 1 has a circumferential side wall protruding upward, which limits the gasket 4. The gasket 4 and the cover plate 6 are respectively provided with a first through hole 42 and a second through hole 62 corresponding to the position of the shaft hole 52, so that the pin shaft on the base 1 can pass through the first through hole 42, the shaft hole 52 and the second through hole 62 in sequence.

[0060] The gasket 4 and the cover plate 6 are respectively provided with a first arc-shaped hole 41 and a second arc-shaped hole 61, please refer to Figure 1 The swing pin 37 passes through the first arc-shaped hole 41, the second waist-shaped hole 51 and the second arc-shaped hole 61 in sequence, and the swing pin 37 can swing back and forth within the arc-shaped range of the first arc-shaped hole 41 and the second arc-shaped hole 61.

[0061] When the coil is energized, the two ends of the iron core 21 have magnetic poles, which repel the magnetic poles on the magnet 3, thereby driving the magnet 3 to rotate. The rotation of the magnet 3 will make the swing pin 37 swing in the first arc-shaped hole 41, and at the same time drive the blade 5 to rotate. After the blade 5 rotates by a certain angle, please refer to Figure 5 , the light transmission hole 11 can be shielded to realize image correction; if the coil is reversely energized, the magnet 3 will rotate reversely, the swing pin 37 will drive the blade 5 to reset and make the light transmission hole 11 open, please refer to Figure 6 .

[0062] Currently, most shutter structures are designed separately from infrared lenses. Dust may fall on the detector and form a circular spot when the shutter is used as an actuator. To solve this problem, a germanium window is usually added to the shutter, which increases the complexity of the shutter design and process. The present application provides an infrared lens, in which the shutter structure is integrated in the middle of the lens, solving the problem of dust falling on the detector and simplifying the shutter design. Specifically, the infrared lens comprises a lens barrel, a plurality of lenses and a shutter structure. The plurality of lenses are sequentially arranged in the lens barrel along the lens axis. The shutter structure is the shutter structure described above. The shutter structure can be arranged between two adjacent lenses, thereby solving the problem of dust falling on the detector caused by the separate design of the lens and the shutter. Meanwhile, the infrared lens also has all the advantages of the shutter structure described above.

[0063] It should be noted that the relative terms, such as first and second, in the present description are used only to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0064] The principles and implementation modes of the present application are described by applying specific examples in the present description. The above description of the examples is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A shutter structure, characterized by, The application relates to a magnet (3) and an electromagnet (2) matched with the magnet (3) and driving the magnet (3) to rotate, the electromagnet (2) comprising a strip-shaped iron core (21) and a plurality of coils wound on the outer periphery of the iron core (21), one end of the iron core (21) being close to the magnet (3) and having a circular arc surface (211) coaxial with the magnet (3) at the end close to the magnet (3), a winding groove (213) being arranged in the middle of the iron core (21) for accommodating the coils, and the other end of the iron core (21) extending away from the magnet (3) and being provided with positioning holes for positioning installation at both ends of the iron core (21).

2. The shutter structure according to claim 1, characterized in that The application further relates to a base (1) provided with an eccentric light hole (11) and a containing groove (12) for accommodating the electromagnet (2) and the magnet (3), the axis direction of the magnet (3) being the same as that of the light hole (11), and a plurality of positioning pins extending along the axis direction of the magnet (3) being arranged at the bottom of the containing groove (12), the positioning pins comprising a first positioning pin (14) and a second positioning pin (13) inserted into the positioning holes.

3. The shutter structure of claim 2, wherein The number of the electromagnets (2) is two, the two electromagnets (2) are arranged on both sides of the magnet (3), and the poles of the two electromagnets (2) at one end of the circular arc surface (211) are arranged oppositely, and the two poles of the magnet (3) are arranged along the radial direction.

4. The shutter structure of claim 2, wherein The positioning holes comprise a round hole (212) arranged at one end of the iron core (21) close to the circular arc surface (211) and a first waist-shaped hole (214) arranged at the other end of the iron core (21), the opening directions of the round hole (212) and the first waist-shaped hole (214) are consistent with the axis direction of the magnet (3), and the hole wall of the first waist-shaped hole (214) in the length direction abuts against the outer wall of the positioning pin to limit the rotation of the iron core (21) around the axis of the round hole (212).

5. The shutter structure of claim 2, wherein The positioning pins further comprise a third positioning pin (15) matched with the magnet (3), and the magnet (3) is arranged to rotate on the third positioning pin (15).

6. The shutter structure of claim 5, wherein The magnet (3) comprises: a magnet (31) in a columnar shape, the poles of the magnet (31) being matched with the poles of the iron core (21), and a first center hole (32) being arranged in the middle of the magnet (31); a swing part comprising a main body (33) arranged on the upper side of the magnet (31), a connecting column (34) arranged on the main body (33) and extending into the first center hole (32) and fixedly connected with the magnet (31), a swing shaft (36) arranged on the main body (33) and extending along the radial direction parallel to the magnet (31), a swing pin (37) arranged on the extension end of the swing shaft (36) and protruding upward, and a second center hole (35) arranged on the connecting column (34) and matched with the third positioning pin (15) in rotation.

7. The shutter structure according to claim 6, characterized in that Further comprising a vane (5) arranged on the upper side of the base (1), wherein an axial hole (52) is arranged on the vane (5) and is in rotational cooperation with the base (1), a second waist-shaped hole (51) is further arranged on the vane (5), and the swing pin (37) is inserted into the second waist-shaped hole (51) to drive the vane (5) to rotate around the axis of the axial hole (52) to shield or open the light hole (11).

8. The shutter structure according to claim 7, characterized in that The vane (5) and the base (1) are provided with a gasket (4), the upper side of the vane (5) is provided with a cover plate (6) fixedly connected with the base (1), and the gasket (4) and the cover plate (6) are both provided with a light transmission hole (63) corresponding to the position and contour of the light hole (11).

9. The shutter structure of claim 8, wherein, The gasket (4) and the cover plate (6) are respectively provided with a first through hole (42) and a second through hole (62) corresponding to the position of the axial hole (52), and the gasket (4) and the cover plate (6) are both respectively provided with a first arc-shaped hole (41) and a second arc-shaped hole (61), the swing pin (37) penetrates the first arc-shaped hole (41), the second waist-shaped hole (51) and the second arc-shaped hole (61) in sequence, and the swing pin (37) reciprocates within the arc-shaped range of the first arc-shaped hole (41) and the second arc-shaped hole (61).

10. An infrared lens characterized by, Comprise: a lens barrel; a plurality of lenses arranged in the lens barrel in sequence along the axial direction of the lens barrel; a shutter structure according to any one of claims 1-9, the shutter structure being located between two adjacent lenses.

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