Lens aperture adjusting device

Abstract

The invention belongs to the technical field of electronic equipment, and particularly relates to a lens aperture adjusting device, which comprises a base; the movable seat is rotatably arranged on the base in the first direction, and the movable seat and the base are provided with lens avoiding holes matched with the lens in the first direction; the two shielding blades are arranged above the base and the movable seat and are respectively provided with an aperture groove, the two aperture grooves are oppositely arranged above the lens avoiding hole to form an aperture hole, the shielding blades are rotatably connected to the base around a first direction, and when the movable seat rotates around the first direction to drive the two shielding blades to rotate, the aperture hole is formed in the aperture hole. And the area of the aperture hole changes. The shielding blades are simple in design, and the two shielding blades rotate along with the rotation of the movable seat through the design that the aperture grooves oppositely formed in the two shielding blades form the aperture hole, so that the shielding of the lens and the adjustment of the size of the aperture of the lens are realized, and the purpose of variable aperture is realized.

Description

Technical Field

[0001] This invention belongs to the field of electronic equipment technology, and specifically relates to a lens aperture adjustment device. Background Technology

[0002] Regarding camera aperture, in well-lit environments, a smaller aperture allows for greater depth of field and sharper images; conversely, in low-light conditions, a larger aperture increases light intake, resulting in cleaner images with higher exposure and lower noise. In the realm of electronic devices, cameras typically lack adjustable aperture sizes, making it difficult to adapt to various shooting scenarios. This leads to overexposure in bright sunlight outdoors and underexposure, resulting in dark, noisy, and detail-laden images at night. To meet user shooting needs, a physically variable aperture is crucial for effective photography.

[0003] Therefore, researchers in this field need to develop novel variable apertures to solve the aforementioned technical challenges. Summary of the Invention

[0004] The present invention addresses the aforementioned technical problems by providing a lens aperture adjustment device.

[0005] A lens aperture adjustment device, the lens aperture adjustment device comprising:

[0006] Base;

[0007] A movable seat is rotatably mounted on the base about a first direction, and the movable seat and the base are provided with lens clearance holes that cooperate with the lens along the first direction.

[0008] Two blocking blades are disposed above the base and the movable seat and are respectively provided with aperture grooves. The two aperture grooves are disposed opposite each other above the lens clearance hole to form an aperture hole. The blocking blades are rotatably connected to the base around a first direction. When the movable seat rotates around the first direction, causing the two blocking blades to rotate, the area of ​​the aperture hole changes accordingly.

[0009] Optionally, the base edge is provided with a fixing protrusion;

[0010] The lens aperture adjustment device also includes:

[0011] The top cover is fixedly connected to the fixed protrusion to form an active space. The top cover, the active seat, and the base are provided with lens clearance holes that cooperate with the lens along the first direction. The active seat and the two blocking blades are all disposed in the active space and can rotate within the active space.

[0012] Optionally, the lens aperture adjustment device further includes:

[0013] A light-absorbing sheet is provided, which blocks the lens clearance hole on the base. The light-absorbing sheet has a central hole and is located below the two blocking blades. When the movable seat rotates around the first direction, causing the two blocking blades to rotate, the aperture hole changes in area above the light-absorbing sheet.

[0014] Optionally, the base is provided with a support protrusion around the lens clearance hole, and the light-absorbing sheet is provided at the top of the support protrusion.

[0015] Optionally, the shielding blade is provided with a fixing pin hole, the base edge is provided with a fixing protrusion, the top of the fixing protrusion is provided with a fixing pin, and the fixing pin is connected to the fixing pin hole pin shaft;

[0016] The shielding blade is provided with a movable pin hole, and the movable seat is provided with a movable pin. The movable pin is connected to the movable pin hole. When the movable seat rotates, the movable pin can slide in the movable pin hole along the length direction of the movable pin hole. The movable pin drives the shielding blade to rotate around the axis of the fixed pin shaft. The two shielding blades move closer or further apart, thereby causing the area of ​​the aperture hole to change.

[0017] Optionally, the two shielding blades are arranged in an alternating overlapping configuration.

[0018] Optionally, the movable pin hole is an oblong hole.

[0019] Optionally, the movable pin hole is an oblong hole that extends along or is parallel to the tangent direction of the lens clearance hole.

[0020] Optionally, the fixing pin hole is a circular hole.

[0021] Optionally, the movable pin holes on the two shielding blades are arranged opposite to each other, and the two shielding blades share the same movable pin.

[0022] Optionally, an anti-detachment baffle is provided at the top of the movable pin, and the blocking blade is located between the anti-detachment baffle and the movable seat.

[0023] Optionally, the base is provided with a movable seat mounting shaft, the axial direction of the movable seat mounting shaft is a first direction, the bottom of the movable seat is provided with a connecting sleeve, the connecting sleeve is provided with a connecting hole and is sleeved on the outside of the movable seat mounting shaft through the connecting hole, and a magnet is sleeved on the outside of the connecting sleeve. When the magnet rotates, the connecting sleeve and the movable seat rotate around the movable seat mounting shaft.

[0024] Optionally, the outer wall of the connecting sleeve is provided with a limiting protrusion, the magnet has a ring structure, and the inner wall of the magnet is provided with a keyway. The connecting sleeve and the magnet are connected by inserting into the keyway through the limiting protrusion to achieve a key connection.

[0025] Optionally, a movable arm is provided on one side of the movable seat, and a movable pin is provided at the top end of the movable arm. The movable pin is connected to a movable pin hole provided on the blocking blade. When the movable seat rotates, the movable pin drives the two blocking blades to move closer or further apart, thereby causing the area of ​​the aperture to change.

[0026] Optionally, the lens aperture adjustment device further includes an electromagnet structure, the electromagnet structure comprising:

[0027] Coil bushing;

[0028] A coil, the coil being wound around the outside of the coil sleeve;

[0029] A magnetic conductive element is provided, which is connected to the coil sleeve through it. Both ends of the magnetic conductive element protrude from the coil sleeve and have arc-shaped ends. The arc-shaped ends of the magnetic conductive element are arranged opposite to each other on the outer periphery of the magnet in the annular structure.

[0030] After the coil is energized, the magnet and the movable seat rotate under the action of the magnetic conductor.

[0031] Optionally, a circuit board is fixedly connected to the top of the base, the coil sleeve is disposed on the circuit board, and the coil is powered by the circuit board.

[0032] Optionally, the circuit board is an FPC board.

[0033] Beneficial effects: The present invention has at least one or more of the following advantages:

[0034] 1. The design of the blocking blade involved in this invention is simple. It uses the aperture slots arranged opposite to each other on two blocking blades to construct the aperture hole. When the movable seat rotates, the two blocking blades rotate synchronously, thereby achieving the blocking of the lens and the adjustment of the lens aperture size, and finally achieving the goal of variable aperture.

[0035] 2. The present invention provides a light-absorbing plate with a light-absorbing effect between the base and the blocking blade. The light-absorbing plate can limit the maximum aperture aperture range and prevent excess light from entering the lens, thereby improving the aperture adjustment effect. In other words, the central hole of the light-absorbing plate limits the maximum aperture aperture.

[0036] 3. The single-blade shading design of this invention is unique, comprising only three main parts: half an aperture slot, a fixed pin hole, and a movable pin hole. Its structure is extremely simple and clear, making the manufacturing process highly convenient and efficient. By cleverly combining two such shading blades, an adjustable aperture can be easily formed, thereby achieving flexible control over light flux. This design not only simplifies the production process but also greatly enhances the flexibility and practicality of aperture adjustment.

[0037] 4. This invention employs a driving method combining a magnet and an electromagnet structure for the rotation of the movable base. By supplying a forward or reverse current to the coil, the magnet and the movable base can be driven to rotate or reverse, thereby changing the area of ​​the aperture formed by the two blocking blades. This driving method has several advantages: First, it has a fast response speed, rapidly adjusting the rotation based on current changes to quickly change the aperture area and meet the immediate needs of aperture adjustment under different lighting conditions. Second, it offers high control precision; by precisely controlling the magnitude and direction of the current supplied to the coil, the rotation angle of the movable base can be precisely controlled, thus precisely adjusting the size of the aperture to achieve ideal light throughput control. Third, it provides strong stability; the magnet and electromagnet structure is less affected by external interference during operation, maintaining a relatively stable rotation state, ensuring the stability and reliability of aperture adjustment, and providing strong support for high-quality image capture. Attached Figure Description

[0038] Figure 1 This is an exploded view of the structure of the lens at its maximum aperture according to the present invention;

[0039] Figure 2 This is an exploded view of the structure of the lens at its smallest aperture according to the present invention;

[0040] Figure 3 This is an exploded view of a structure according to the present invention;

[0041] Figure 4 This is a schematic diagram of one structure of the two shielding blades of the present invention;

[0042] Figure 5 This is a schematic diagram of one structure of the base of the present invention;

[0043] Figure 6 for Figure 5 Partial structural diagram;

[0044] Figure 7 This is an exploded view of one possible structure of the electromagnet of the present invention;

[0045] Figure 8 This is a diagram showing the positional relationship between the electromagnet structure and the magnet of the present invention;

[0046] Figure 9 This is a schematic diagram of one structure of the movable seat of the present invention;

[0047] Figure 10 This is another schematic diagram of the movable seat of the present invention. Detailed Implementation

[0048] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0049] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0050] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0051] In the following description, in order to clearly demonstrate the structure and operation of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0052] Reference Figures 1 to 10 This invention provides a lens aperture adjustment device, which is mounted on a lens motor for adjusting the lens aperture size. The lens aperture adjustment device includes a base 10, a movable seat 20, and two blocking blades 30.

[0053] The base 10 is used to fix it to the housing of the lens motor.

[0054] The movable base 20 is rotatably mounted on the base 10 around a first direction. Both the movable base 20 and the base 10 have lens clearance holes along the first direction to mate with the lens. These lens clearance holes are typically circular. The diameters of the lens clearance holes on the movable base 20 and the base 10 may be the same or different. The lens clearance holes are located at the center of both the movable base 20 and the base 10, and their centers correspond to the lens on the lens motor, allowing light to enter the lens. The first direction is parallel to or overlaps with the center line of the combined base 10 and movable base 20; that is, the first direction is parallel to or overlaps with the axis of the lens clearance hole.

[0055] Two blocking blades 30 are disposed above the base 10 and the movable seat 20. The blocking blades 30 are provided with aperture grooves 31, which are semi-circular grooves. The two aperture grooves 31 are disposed opposite each other above the lens clearance hole to form an aperture hole 30a. The blocking blades 30 are rotatably connected to the base 10 in a first direction. When the movable seat 20 rotates in the first direction, causing the two blocking blades 30 to rotate, the area of ​​the aperture hole 30a changes accordingly.

[0056] Specifically, the movable base 20 is connected to each of the blocking blades 30. When the movable base 20 rotates around the first direction, it drives the two blocking blades 30 to rotate, causing them to move closer or further apart, thus changing the aperture opening 30a formed by them. As the opening size of the aperture opening 30a changes, the light entering the lens changes accordingly, thereby achieving the blocking of the lens and the adjustment of the lens aperture.

[0057] like Figure 1 As shown, when the two blocking blades 30 are at their furthest distance from each other, the aperture hole 30a has its largest opening. At this time, the size of the lens aperture is the diameter of the lens clearance hole. When the present invention has a light-absorbing plate 40, the size of the lens aperture is the diameter of the light-absorbing plate 40. Figure 2 As shown, when the two blocking blades 30 are closest to each other, the aperture of the aperture hole 30a is at its smallest, and the size of the lens aperture at this time is the aperture of the aperture hole 30a. In other words, when the aperture of the aperture hole 30a is not larger than the aperture of the lens clearance hole or the aperture of the light-absorbing plate 40, the size of the lens aperture is the aperture of the aperture hole 30a; when the aperture of the aperture hole 30a is larger than the aperture of the lens clearance hole or the aperture of the light-absorbing plate 40, the size of the lens aperture is the aperture of the lens clearance hole or the aperture of the light-absorbing plate 40.

[0058] In one embodiment, reference is made to Figures 1 to 3The base 10 has a fixed protrusion 11 on its edge. The lens aperture adjustment device also includes a top cover 50, which is fixedly connected to the fixed protrusion 11 to form a movable space. The movable seat 20 and the two blocking blades 30 are all disposed in the movable space and can rotate within the movable space. The top cover 50, the movable seat 20, and the base 10 are provided with lens clearance holes that cooperate with the lens along a first direction. The lens clearance holes on the top cover 50 can be the same size or different from the lens clearance holes on the movable seat 20 and the lens clearance holes on the base 10. Of course, when the present invention has a light-absorbing plate 40, each lens clearance hole is not smaller than the center hole 40a of the light-absorbing plate 40.

[0059] In practice, each lens clearance hole is located at the center of each component, and the center of the base 10, movable seat 20, light-absorbing plate 40 and top cover 50 are all corresponding to the lens on the lens motor.

[0060] In one embodiment, reference is made to Figure 1 , Figure 3 , Figure 5 and Figure 6 The lens aperture adjustment device also includes a light absorber 40, which blocks the lens clearance hole on the base 10. The light absorber 40 has a central hole 40a and is located below two blocking blades 30. When the movable base 20 rotates around the first direction, causing the two blocking blades 30 to rotate, the aperture hole 30a changes in area above the light absorber 40.

[0061] In this embodiment, a light-absorbing plate 40 with a light-absorbing effect is provided between the base 10 and the blocking blade 30. The light-absorbing plate 40 can limit the range of the maximum aperture 30a and prevent excess light from entering the lens, thereby improving the aperture adjustment effect. In other words, the center hole 40a of the light-absorbing plate 40 limits the maximum value of the aperture 30a.

[0062] In one embodiment, reference is made to Figure 3 A support protrusion 12 is provided on the base 10 around the lens clearance hole, and a light-absorbing plate 40 is provided at the top of the support protrusion 12. That is to say, the light-absorbing plate 40 is located directly above the lens clearance hole on the base 10, and the diameter of the central hole 40a of the light-absorbing plate 40 is not larger than the diameter of the lens clearance hole on the base 10.

[0063] In one embodiment, reference is made to Figure 4 The shielding blade 30 is provided with a fixed pin hole 33 and a movable pin hole 34.

[0064] Reference Figure 3 , Figure 5 and Figure 6 The base 10 has a fixing protrusion 11 on its edge, and two fixing pins 13 are provided at the top of the fixing protrusion 11. Each fixing pin 13 is connected to a corresponding fixing pin hole 33 pin shaft.

[0065] Reference Figure 9 The movable seat 20 is provided with a movable pin 24, which is connected to the movable pin hole 34. For example... Figure 1 and Figure 2 As shown, when the movable seat 20 rotates, the movable pin 24 can slide along the length of the movable pin hole 34 within the movable pin hole 34. The movable pin 24 drives the blocking blade 30 to rotate around the axis of the fixed pin 13. The two blocking blades 30 move closer or further apart, thereby causing the aperture hole 30a to change in area.

[0066] In one embodiment, two shielding blades 30 are arranged in an alternating overlapping manner.

[0067] In other words, the two blocking blades 30 partially overlap during rotation.

[0068] Reference Figure 1 and Figure 2 When the movable base 20 rotates clockwise, the overlapping portion of the two blocking blades 30 gradually decreases, and the aperture 30a gradually increases. When the movable base 20 rotates counterclockwise, the overlapping portion of the two blocking blades 30 gradually increases, and the aperture 30a gradually decreases.

[0069] In one embodiment, reference is made to Figure 4 The movable pin hole 34 is a waist-shaped hole.

[0070] In one embodiment, the movable pin hole 34 is an oblong hole that extends along or is parallel to the tangent direction of the lens clearance hole.

[0071] In one embodiment, the fixing pin hole 33 is a circular hole.

[0072] In one embodiment, the movable pin holes 34 on the two blocking blades 30 are arranged opposite to each other, and the two blocking blades 30 share the same movable pin 24.

[0073] In other words, by setting only one movable pin 24 on the movable seat 20, the two blocking blades 30 can be driven to move relative to each other when the movable seat 20 rotates.

[0074] In one embodiment, reference is made to Figure 9 and Figure 10 An anti-detachment baffle 25 is provided at the top of the movable pin 24, and the blocking blade 30 is located between the anti-detachment baffle 25 and the movable seat 20. The anti-detachment baffle 25 is provided to prevent the blocking blade 30 from detaching.

[0075] In one embodiment, reference is made to Figure 3 , Figure 5 and Figure 6 The base 10 is provided with a movable seat mounting shaft 14, and the axial direction of the movable seat mounting shaft 14 is the first direction.

[0076] Reference Figure 9 and Figure 10 The bottom of the movable seat 20 is provided with a connecting sleeve 21. The connecting sleeve 21 is provided with a connecting hole 211 and is sleeved on the outside of the movable seat mounting shaft 14 through the connecting hole 211. A magnet 22 is sleeved on the outside of the connecting sleeve 21. When the magnet 22 rotates, the connecting sleeve 21 and the movable seat 20 rotate around the movable seat mounting shaft 14.

[0077] In a specific implementation, a connecting hole 211 is provided in the middle of the connecting sleeve 21 along the first direction for fitting onto the outside of the movable seat mounting shaft 14. A magnet top insertion groove 26 is also provided on the movable seat 20. When the magnet 22 is fitted onto the outside of the connecting sleeve 21, the top of the magnet 22 is embedded in the magnet top insertion groove 26 to achieve the installation and positioning of the magnet 22.

[0078] In one embodiment, reference is made to Figure 9 and Figure 10 The outer wall of the connecting sleeve 21 is provided with a limit protrusion 212, and the magnet 22 has a ring structure, as shown in the reference. Figure 3 The inner wall of the magnet 22 is provided with a keyway 221. The connecting sleeve 21 and the magnet 22 are connected by a limiting protrusion 212 into the keyway 221. The key connection enables the connecting sleeve 21 and the movable seat 20 to rotate with the magnet 22.

[0079] In specific implementation, two limiting protrusions 212 can be symmetrically set on the outer wall of the connecting sleeve 21, and the length direction of the limiting protrusions 212 and the keyway is the first direction.

[0080] In one embodiment, reference is made to Figure 9 and Figure 10 A movable arm 20a is provided on one side of the movable base 20. A movable pin 24 is provided at the top end of the movable arm 20a. The movable pin 24 is connected to the movable pin hole 34 provided on the blocking blade 30. When the movable base 20 rotates, the movable pin 24 drives the two blocking blades 30 to move closer or further apart, thereby causing the aperture hole 30a to change in area.

[0081] In one embodiment, reference is made to Figure 3 , Figures 5 to 8 The lens aperture adjustment device also includes an electromagnet structure 60, which drives the magnet 22 to rotate around a first direction.

[0082] The electromagnet structure 60 includes a coil sleeve 61, a coil 62, and a magnetic conductor 63.

[0083] A coil 62 is wound around the outside of the coil sleeve 61, and a magnetic conductor 63 is provided inside the coil sleeve 61. The magnetic conductor 63 is connected to the coil sleeve 61 through it, and both ends of the magnetic conductor 63 protrude from the coil sleeve 61. The ends of the magnetic conductor 63 are arc-shaped structures 63a, and the arc-shaped structures 63a at both ends of the magnetic conductor 63 are arranged opposite to each other on the outer periphery of the magnet 22 of the annular structure.

[0084] When the coil 62 is energized, the two ends of the magnetic conductor 63 generate N / S magnetic poles. The N / S magnetic poles generated by the magnetic conductor 63 have a certain deviation angle from the S / N magnetic poles of the ring magnet 22. After the coil 62 is energized, the N / S magnetic poles on the magnetic conductor 63 and the S / N magnetic poles of the ring magnet 22 approach each other, causing the ring magnet 22 and the movable seat 20 to rotate. When a reverse current is applied to the coil 62, the N / S magnetic poles on the magnetic conductor 63 reverse and repel the S / N magnetic poles of the ring magnet 22, causing the ring magnet 22 and the movable seat 20 to rotate in the opposite direction.

[0085] In specific implementation, such as Figure 7 As shown, a magnetic guide hole 611 is provided in the middle of the coil sleeve 61, which extends through its axial direction. The magnetic guide 63 passes through the magnetic guide hole 611 and extends out of the magnetic guide hole 611 at both ends.

[0086] In one embodiment, reference is made to Figures 1 to 3 , Figure 5 and Figure 6 A circuit board 70 is fixedly connected to the top of the base 10, and a coil sleeve 61 is set on the circuit board 70. The coil 62 is powered by the circuit board 70.

[0087] In practice, the base 10 is provided with a circuit board mounting protrusion 15, and the circuit board 70 is fixedly connected to the base 10 by being fixedly connected to the circuit board mounting protrusion 15.

[0088] In one embodiment, the circuit board 70 is an FPC board.

[0089] In one embodiment, the circuit board is provided with pins that connect to external circuits. When the top cover 50 is provided in this invention, the circuit board is located within the active space and the pins extend out of the active space.

[0090] The lens aperture adjustment device of the present invention, in addition to being installed on the lens motor of mobile devices such as mobile phones or cameras to adjust the lens aperture size, can also be used on the camera of terminal devices, specifically integrated into the shutter of the terminal device, to adjust the lens aperture size on the terminal device. The terminal device includes a laptop computer.

[0091] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A lens aperture adjustment device, characterized in that, The lens aperture adjustment device includes: Base; A movable seat is rotatably mounted on the base about a first direction, and the movable seat and the base are provided with lens clearance holes that cooperate with the lens along the first direction. Two blocking blades are disposed above the base and the movable seat and are respectively provided with aperture grooves. The two aperture grooves are disposed opposite each other above the lens clearance hole to form an aperture hole. The blocking blades are rotatably connected to the base around a first direction. When the movable seat rotates around the first direction, causing the two blocking blades to rotate, the area of ​​the aperture hole changes accordingly.

2. The lens aperture adjustment device as described in claim 1, characterized in that, The base edge is provided with a fixing protrusion; The lens aperture adjustment device also includes: The top cover is fixedly connected to the fixed protrusion to form an active space. The top cover, the active seat, and the base are provided with lens clearance holes that cooperate with the lens along the first direction. The active seat and the two blocking blades are all disposed in the active space and can rotate within the active space.

3. The lens aperture adjustment device as described in claim 1, characterized in that, The lens aperture adjustment device also includes: A light-absorbing sheet is provided, which blocks the lens clearance hole on the base. The light-absorbing sheet has a central hole and is located below the two blocking blades. When the movable seat rotates around the first direction, causing the two blocking blades to rotate, the aperture hole changes in area above the light-absorbing sheet.

4. The lens aperture adjustment device as described in claim 3, characterized in that, The base has a support protrusion around the lens clearance hole, and the light-absorbing sheet is provided at the top of the support protrusion.

5. The lens aperture adjustment device as described in claim 1, characterized in that, The shielding blade is provided with a fixing pin hole, the base edge is provided with a fixing protrusion, the top of the fixing protrusion is provided with a fixing pin, and the fixing pin is connected to the fixing pin hole pin shaft. The shielding blade is provided with a movable pin hole, and the movable seat is provided with a movable pin. The movable pin is connected to the movable pin hole. When the movable seat rotates, the movable pin can slide in the movable pin hole along the length direction of the movable pin hole. The movable pin drives the shielding blade to rotate around the axis of the fixed pin shaft. The two shielding blades move closer or further apart, thereby causing the area of ​​the aperture hole to change.

6. The lens aperture adjustment device as described in claim 5, characterized in that, The two shielding blades are arranged in an alternating overlapping configuration; And / or, the movable pin hole is an oblong hole; And / or, the movable pin hole is an oblong hole extending along or parallel to the tangential direction of the lens clearance hole; And / or, the fixing pin hole is a circular hole; And / or, the movable pin holes on the two shielding blades are arranged opposite to each other, and the two shielding blades share the same movable pin; And / or, the top of the movable pin is provided with an anti-detachment baffle, and the blocking blade is located between the anti-detachment baffle and the movable seat.

7. The lens aperture adjustment device as described in any one of claims 1 to 6, characterized in that, The base is provided with a movable seat mounting shaft, the axis of which is a first direction. The bottom of the movable seat is provided with a connecting sleeve, which has a connecting hole and is fitted onto the outside of the movable seat mounting shaft through the connecting hole. A magnet is fitted onto the outside of the connecting sleeve. When the magnet rotates, the connecting sleeve and the movable seat rotate around the movable seat mounting shaft.

8. The lens aperture adjustment device as described in claim 7, characterized in that, The outer wall of the connecting sleeve is provided with a limiting protrusion, the magnet has a ring structure, and the inner wall of the magnet is provided with a keyway. The connecting sleeve and the magnet are connected by inserting the limiting protrusion into the keyway to achieve a key connection.

9. The lens aperture adjustment device as described in claim 7, characterized in that, A movable arm is provided on one side of the movable seat, and a movable pin is provided at the top end of the movable arm. The movable pin is connected to the movable pin hole provided on the blocking blade. When the movable seat rotates, the movable pin drives the two blocking blades to move closer or further apart, thereby causing the area of ​​the aperture to change.

10. The lens aperture adjustment device as described in claim 7, characterized in that, The lens aperture adjustment device further includes an electromagnet structure, which includes: Coil bushing; A coil, the coil being wound around the outside of the coil sleeve; A magnetic conductive element is provided, which is connected to the coil sleeve through it. Both ends of the magnetic conductive element protrude from the coil sleeve and have arc-shaped ends. The arc-shaped ends of the magnetic conductive element are arranged opposite to each other on the outer periphery of the magnet in the annular structure. After the coil is energized, the magnet and the movable seat rotate under the action of the magnetic conductor. Preferably, a circuit board is fixedly connected to the top of the base, the coil sleeve is disposed on the circuit board, and the coil is powered by the circuit board; More preferably, the circuit board is an FPC board.

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