Variable aperture lens structure

Abstract

The utility model relates to optical imaging technical field discloses a variable aperture lens structure, including front lens group, rear lens group and the diaphragm adjusting assembly of setting between front lens group and rear lens group, diaphragm adjusting assembly includes carrier assembly and two pieces of shading blade, is provided with first light hole on carrier assembly, two pieces of shading blade are along first direction and are slidably arranged in carrier assembly, two pieces of shading blade can be close to each other or away from each other, two pieces of shading blade close to each other in the first light hole inner circumference form second light hole, two shading blades can be stopped in the outer circumference of first light hole away from each other, preliminary convergence light, correction aberration through front lens group, fine imaging, eliminate residual effect through rear lens group, through two pieces of shading blade along first direction and be slidably arranged in carrier assembly, with adjusting the size of diaphragm, be applicable to different shooting scene, not only simple structure, but also avoid the stagnation.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging technology, and in particular to a variable aperture lens structure. Background Technology

[0002] Currently, electronic devices typically incorporate lens structures to facilitate shooting. These lens structures include variable apertures; by changing the size of the aperture opening, the amount of light entering the variable aperture can be adjusted to suit different usage scenarios. In related technologies, variable apertures include a rotating component and multiple blades (usually six or more). The rotating component drives the blades to rotate, thus changing the size of the aperture opening formed by the blades. However, current variable apertures have a large number of blades, resulting in a complex structure and a tendency to jam during rotation, negatively impacting the user experience. Utility Model Content

[0003] The purpose of this invention is to propose a variable aperture lens structure that solves the technical problem in the prior art where multiple blades are rotated by rotating components, resulting in a complex structure that is prone to jamming and affecting the user experience.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a variable aperture lens structure, including a front lens group, a rear lens group, and an aperture adjustment component disposed between the front lens group and the rear lens group, the aperture adjustment component comprising:

[0006] A carrier assembly is disposed between the front lens group and the rear lens group, and the carrier assembly is provided with a first light-transmitting hole;

[0007] Two light-blocking blades are slidably disposed on the carrier assembly along a first direction. The two light-blocking blades can move closer to each other or further away from each other. When the two light-blocking blades move closer to each other, they form a second light-transmitting hole on the inner periphery of the first light-transmitting hole. When the two light-blocking blades move further away from each other, they can stop on the outer periphery of the first light-transmitting hole.

[0008] This variable aperture lens structure includes a front lens group, a rear lens group, and an aperture adjustment assembly positioned between them. The front lens group initially converges light and corrects aberrations; the rear lens group refines the image and eliminates residual aberrations; the aperture adjustment assembly in the middle works in conjunction with the front and rear lens groups to optimize aberrations and flexibly balance light transmission and depth of field. The aperture adjustment assembly includes a carrier assembly and light-blocking blades. The carrier assembly has a first light-transmitting hole, and two light-blocking blades are slidably positioned on the carrier assembly along a first direction. The two light-blocking blades can move closer or further apart to adjust the aperture size. When the two light-blocking blades are close together, they form a second light-transmitting hole within the first light-transmitting hole, resulting in a small aperture suitable for shooting in strong light, macro, and group photos. When the two light-blocking blades are far apart, they can stop at the outer periphery of the first light-transmitting hole, resulting in a large aperture suitable for shooting in low light and high-speed motion. The sliding arrangement of the two light-blocking blades in this variable aperture lens structure is not only simple in structure but also less prone to movement jamming.

[0009] As a preferred embodiment of the aforementioned variable aperture lens structure, the carrier component includes:

[0010] A support carrier is provided with clearance through holes, and the light-shielding blades are slidably disposed on the support carrier;

[0011] A light-shielding cover is disposed on the side of the light-shielding blade away from the supporting carrier. The light-shielding cover is provided with a first light-transmitting hole, which is correspondingly disposed with the avoidance through hole, and the diameter of the first light-transmitting hole is less than or equal to the diameter of the avoidance through hole.

[0012] The supporting carrier supports the sliding of the light-shielding blades. The light-shielding cover is located on the side of the light-shielding blades away from the supporting carrier. The first light-transmitting hole and the avoidance hole are correspondingly set on the light-shielding cover, and the diameter of the first light-transmitting hole is less than or equal to the diameter of the avoidance hole, thereby limiting the critical edge of the light through the first light-transmitting hole and forming a large aperture.

[0013] As a preferred embodiment of the above-mentioned variable aperture lens structure, the supporting carrier is provided with a groove on the side facing the light-shielding cover plate. The groove extends along the first direction, and the two side walls of the groove along the first direction are recessed with embedding grooves. The two light-shielding blades are slidably disposed in the groove along the first direction, and at least part of the structure is slidably disposed in the corresponding embedding groove. The light-shielding cover plate covers the supporting carrier and can seal the groove opening.

[0014] The grooves and recesses provide space for the sliding installation of the shading blades. The shading cover plate covers the support carrier and can seal the groove opening to prevent the shading blades from falling out of the groove.

[0015] As a preferred embodiment of the above-mentioned variable aperture lens structure, the groove is a rectangular groove, the long side of the groove extends in the first direction, the short side of the groove extends in the second direction, and the light-shielding blade is confined in the groove and the corresponding embedding groove along the second direction.

[0016] The light-shielding blade is confined to the groove and the corresponding embedding slot along the second direction, so that the light-shielding blade can only move along the first direction.

[0017] As a preferred embodiment of the aforementioned variable aperture lens structure, when the two light-blocking blades form the second light-passing hole, the structures of the two light-blocking blades are partially non-coplanar and overlap each other.

[0018] The above configuration allows the two light-shielding blades to open and close within a limited space, and effectively prevents light leakage.

[0019] As a preferred embodiment of the above-mentioned variable aperture lens structure, a support portion extending along the first direction is provided in the groove and the mounting slot. The support portion includes a connected first support section and a second protrusion. Both the first support section and the second protrusion extend along the first direction. The height of the first protrusion is higher than that of the second protrusion. One of the light-shielding blades is slidably disposed on the first support section, and the other light-shielding blade is slidably disposed on the second protrusion. The light-shielding blade supported on the first support section is the first light-shielding blade, and the light-shielding blade supported on the second protrusion is the second light-shielding blade. The height of the first light-shielding blade is higher than that of the second light-shielding blade, so that when the second light-transmitting hole is formed, the ends of the two light-shielding blades that are close to each other overlap.

[0020] The support section can support the two shading blades and also facilitates the non-coplanar overlapping of the two shading blades.

[0021] As a preferred embodiment of the above-mentioned variable aperture lens structure, the end face of the first support section connected to the second protrusion forms a first limiting structure, and the second light-shielding blade can abut against the first limiting structure.

[0022] The sidewall of the groove is provided with a second limiting structure, and the first light-shielding blade can abut against the second limiting structure;

[0023] The second light-shielding blade abuts against the first limiting structure. When the first light-shielding blade abuts against the second limiting structure, the first light-shielding blade and the second light-shielding blade form the second light-transmitting hole.

[0024] The first and second limiting structures can limit the distance between the two light-shielding blades, preventing excessive movement.

[0025] As a preferred embodiment of the above-mentioned variable aperture lens structure, the ends of the two light-blocking blades that are close to each other are provided with arc-shaped grooves, and the two light-blocking blades are close to each other, forming the second light-transmitting hole by the two arc-shaped grooves.

[0026] By setting an arc-shaped groove at the end of the two light-blocking blades that are close to each other, the arc-shaped groove can form a second light-passing hole when the two light-blocking blades are close to each other, so as to form a small aperture.

[0027] As a preferred embodiment of the above-mentioned variable aperture lens structure, the front lens group includes a lens barrel and a front lens element, the front lens element being disposed inside the lens barrel and connected to the lens barrel;

[0028] The rear lens assembly includes a base and a rear lens element. The rear lens element is disposed within the base and connected to the base. The lens barrel is connected to the base, and an accommodating space is formed between the lens barrel and the base. The aperture adjustment assembly is disposed within the accommodating space and is located between the front lens element and the rear lens element.

[0029] The front lens assembly is mounted and fixed to the front lens via the lens barrel. The front lens can converge light and correct image aberrations. The rear lens assembly is mounted and fixed to the rear lens via the base. The rear lens can perform fine imaging and eliminate residual aberrations. The space between the lens barrel and the base is used to accommodate the aperture adjustment assembly.

[0030] As a preferred embodiment of the aforementioned variable aperture lens structure, one of the lens barrel and the base is provided with an outer arc edge in the circumferential direction, and the other is provided with an inner arc edge, with the outer arc edge positioned and installed outside the inner arc edge.

[0031] The lens barrel and base are positioned and installed by positioning the outer curved edge on the outside of the inner curved edge.

[0032] The beneficial effects of this utility model are:

[0033] This invention proposes a variable aperture lens structure, which includes a front lens group, a rear lens group, and an aperture adjustment component disposed between them. The front lens group initially converges light and corrects aberrations; the rear lens group refines the image and eliminates residual aberrations; the aperture adjustment component in the middle works in conjunction with the front and rear lens groups to optimize aberrations and flexibly balance light transmission and depth of field. The aperture adjustment component includes a carrier component and light-blocking blades. The carrier component has a first light-transmitting hole, and two light-blocking blades are slidably disposed on the carrier component along a first direction. The two light-blocking blades can move closer or further apart to adjust the aperture size. When the two light-blocking blades are close together, they form a second light-transmitting hole within the inner circumference of the first light-transmitting hole. In this case, the aperture formed through the second light-transmitting hole is a small aperture, suitable for shooting in environments with strong light, macro, and group photos. When the two light-blocking blades are far apart, they can stop at the outer circumference of the first light-transmitting hole. In this case, a large aperture is formed through the first light-transmitting hole, suitable for shooting in environments with low light and high-speed movement. The sliding arrangement of the two light-shielding blades in this variable aperture lens structure is not only simple in structure, but also less prone to jamming. Attached Figure Description

[0034] Figure 1 This is a first structural schematic diagram of the variable aperture lens structure provided by this utility model;

[0035] Figure 2 This is a second structural schematic diagram of the variable aperture lens structure provided by this utility model;

[0036] Figure 3 yes Figure 2 Sectional view along line BB;

[0037] Figure 4 yes Figure 2 A cross-sectional view along the CC line;

[0038] Figure 5 This is an exploded view of the variable aperture lens structure provided by this utility model;

[0039] Figure 6 This is a first structural schematic diagram of the aperture adjustment assembly provided by this utility model;

[0040] Figure 7 This is a schematic diagram of the second structure of the aperture adjustment assembly provided by this utility model;

[0041] Figure 8 This is a schematic diagram of the third structure of the aperture adjustment assembly provided by this utility model;

[0042] Figure 9 yes Figure 8 Sectional view along line AA;

[0043] Figure 10This is a schematic diagram of the aperture adjustment assembly provided by this utility model after removing the light-shielding cover.

[0044] Figure 11 This is a schematic diagram of the aperture adjustment component provided by this utility model after removing the light-shielding cover plate and a light-shielding blade.

[0045] Figure 12 This is a schematic diagram of the first structure of the support carrier provided by this utility model;

[0046] Figure 13 This is a schematic diagram of the second structure of the support carrier provided by this utility model;

[0047] Figure 14 This is a schematic diagram of the structure of the light-shielding blade provided by this utility model.

[0048] In the diagram: 1. Front lens assembly; 11. Lens barrel; 111. Externally mounted arc edge; 12. Front lens element; 2. Rear lens assembly; 21. Base; 211. Internally mounted arc edge; 212. Cylindrical reinforcing rib; 22. Rear lens element; 3. Aperture adjustment assembly; 31. Support carrier; 310. Clearance through hole; 311. Groove; 3111. Embedding groove; 312. Support part; 3121. First protrusion; 3122. Second protrusion; 3123. First limiting structure; 313. Second limiting structure; 314. Positioning post; 315. Limiting groove; 32. Light-shielding blade; 320. Second light-transmitting hole; 321. Arc groove; 33. Light-shielding cover plate; 331. First light-transmitting hole; 34. Locking component. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0053] like Figures 1-6 As shown, this utility model provides a variable aperture lens structure, including a front lens group 1, a rear lens group 2, and an aperture adjustment component 3 disposed between the front lens group 1 and the rear lens group 2. The aperture adjustment component 3 includes a carrier component and two light-blocking blades 32. The carrier component is disposed between the front lens group 1 and the rear lens group 2, and a first light-transmitting hole 331 is provided on the carrier component. The two light-blocking blades 32 are slidably disposed on the carrier component along a first direction. The two light-blocking blades 32 can move closer to each other or further away from each other. When the two light-blocking blades 32 move closer to each other, they form a second light-transmitting hole 320 on the inner periphery of the first light-transmitting hole 331. When the two light-blocking blades 32 move further away from each other, they can stop on the outer periphery of the first light-transmitting hole 331.

[0054] The variable aperture lens structure features a front lens group 1 that initially converges light and corrects aberrations; a rear lens group 2 that refines imaging and eliminates residual aberrations; and a central aperture adjustment component that works in conjunction with the front and rear lens groups 1 and 2 to optimize aberrations and flexibly balance light transmission and depth of field. The aperture adjustment component 3 includes a carrier component and light-blocking blades 32. The carrier component has a first light-transmitting hole 331. Two light-blocking blades 32 slide along a first direction on the carrier component, and can move closer or further apart to adjust the aperture size. When the two light-blocking blades 32 are close together, they form a second light-transmitting hole 320 within the inner circumference of the first light-transmitting hole 331. In this case, the aperture formed through the second light-transmitting hole 320 is a small aperture, suitable for shooting in strong light, macro, and group photos. When the two light-blocking blades 32 are far apart, they can stop at the outer circumference of the first light-transmitting hole 331, forming a large aperture, suitable for shooting in low light and high-speed motion environments. The variable aperture lens structure has two adjustable settings, namely a large aperture and a small aperture. Two light-blocking blades 32 slide to adjust the size of the aperture stop. It is not only simple in structure, but also less prone to movement jamming.

[0055] like Figures 5-9 As shown, the carrier assembly includes a supporting carrier 31 and a light-shielding cover 33. The supporting carrier 31 is provided with an obstacle avoidance through hole 310 (see...). Figure 12 A light-shielding blade 32 is slidably mounted on a supporting carrier 31. A light-shielding cover plate 33 is located on the side of the light-shielding blade 32 away from the supporting carrier 31. The light-shielding cover plate 33 has a first light-transmitting hole 331, which corresponds to an avoidance hole 310, and the diameter of the first light-transmitting hole 331 is less than or equal to the diameter of the avoidance hole 310. The supporting carrier 31 supports the sliding of the light-shielding blade 32. The light-shielding cover plate 33, located on the side of the light-shielding blade 32 away from the supporting carrier 31, with its first light-transmitting hole 331 corresponding to the avoidance hole 310 and its diameter less than or equal to the diameter of the avoidance hole 310, restricts the light at the critical edge through the first light-transmitting hole 331, forming a large aperture. This design of the light-shielding cover plate 33 not only ensures the roundness of the large aperture and optimizes light control at the aperture edge, but also protects the aperture mechanism, reduces wear, and enhances structural performance.

[0056] Optionally, the light-shielding blade 32 uses SOMA material (SOMA material is a black light-shielding roll material made by precision processing on both sides of a black PET substrate), which can effectively prevent light leakage and can achieve high-precision processing and adapt to precision requirements.

[0057] like Figure 5 As shown, the supporting carrier 31 has a cuboid structure, as... Figure 3 and Figure 9As shown, a groove 311 is provided on the side of the support carrier 31 facing the light-shielding cover plate 33. The groove 311 extends along a first direction, and both sides of the groove 311 along the first direction are recessed with embedding grooves 3111. Two light-shielding blades 32 are slidably disposed in the groove 311 along the first direction, and at least part of their structure is slidably disposed in the corresponding embedding grooves 3111. The light-shielding cover plate 33 covers the support carrier 31 and can seal the opening of the groove 311. The groove 311 and the embedding grooves 3111 provide space for the sliding installation of the light-shielding blades 32. The light-shielding cover plate 33 covers the support carrier 31 and can seal the opening of the groove 311, preventing the light-shielding blades 32 from falling out of the groove 311.

[0058] In this embodiment, the groove 311 is a rectangular groove. The long side of the groove 311 extends in the first direction, and the short side of the groove 311 extends in the second direction. The light-shielding blade 32 is confined in the groove 311 and the corresponding embedding groove 3111 along the second direction, so that the light-shielding blade 32 can only move along the first direction.

[0059] Optionally, such as Figure 10 and Figure 14 As shown, when the two light-blocking blades 32 form the second light-transmitting hole 320, the non-coplanar structures of the two light-blocking blades 32 overlap each other, allowing the two light-blocking blades 32 to open and close within a limited space, and effectively preventing light leakage at the contact point of the two light-blocking blades 32.

[0060] Specifically, such as Figures 10-12 As shown, a support portion 312 extending along a first direction is provided in the groove 311 and the embedding groove 3111. The support portion 312 includes a first protrusion 3121 and a second protrusion 3122 connected together. Both the first protrusion 3121 and the second protrusion 3122 extend along the first direction. The height of the first protrusion 3121 is higher than that of the second protrusion 3122. One light-shielding leaf 32 is slidably disposed on the first protrusion 3121, and the other light-shielding leaf 32 is slidably disposed on the second protrusion 3122. The light-shielding leaf 32 supported on the first protrusion 3121 is the first light-shielding leaf, and the light-shielding leaf 32 supported on the second protrusion 3122 is the second light-shielding leaf. The height of the first light-shielding leaf is higher than that of the second light-shielding leaf, so that when the second light-transmitting hole 320 is formed, the ends of the two light-shielding leaves 32 that are close to each other overlap. The support portion 312 can support the two light-shielding blades 32, and also facilitates the non-coplanar overlapping of the two light-shielding blades 32 (see...). Figure 14 ).

[0061] In this embodiment, support portions 312 are provided on both sides of the long side of the groove 311 to ensure that the light-shielding blade 32 slides stably.

[0062] Optionally, the end face of the end where the first protrusion 3121 connects to the second protrusion 3122 forms a first limiting structure 3123, and the second light-shielding leaf can abut against the first limiting structure 3123; the side wall of the groove 311 is provided with a second limiting structure 313, and the first light-shielding leaf can abut against the second limiting structure 313; when the second light-shielding leaf abuts against the first limiting structure 3123, the first light-shielding leaf and the second light-shielding leaf form a second light-transmitting hole 320. The first limiting structure 3123 and the second limiting structure 313 can limit the distance between the two light-shielding leaves 32, preventing excessive movement.

[0063] Optionally, such as Figure 13 As shown, a limiting groove 315 is provided on the side of the support carrier 31 away from the light shield 33. The rear lens group 2 extends into the limiting groove 315 and is limited by the limiting groove 315.

[0064] Optionally, such as Figure 14 As shown, the two light-blocking blades 32 have arc-shaped grooves 321 at their ends closest to each other. The two light-blocking blades 32 approach each other, and the two arc-shaped grooves 321 form a second light-transmitting hole 320. By providing arc-shaped grooves 321 at the ends of the light-blocking blades 32 that are close to each other, the arc-shaped grooves 321 can form a second light-transmitting hole 320 when the two light-blocking blades 32 approach each other, so as to form a small aperture.

[0065] To achieve the sliding of the light-shielding blades 32, the light-shielding blades 32 are driven by a drive device to reciprocate along a first direction. The light-shielding blades 32 are connected to the output end of the drive device, which drives the light-shielding blades 32 to move along the first direction. The specific structure of the drive device is not limited, as long as it can achieve the movement of the light-shielding blades 32 along the first direction. Two light-shielding blades 32 can be moved closer or further apart by one set of drive devices, or each set of light-shielding blades 32 can be driven by a separate set of drive devices.

[0066] Optionally, the front lens assembly 1 includes a lens barrel 11 and a front lens element 12, with the front lens element 12 disposed within and connected to the lens barrel 11; the rear lens assembly 2 includes a base 21 and a rear lens element 22, with the rear lens element 22 disposed within and connected to the base 21. The lens barrel 11 is connected to the base 21, and a receiving space is formed between the lens barrel 11 and the base 21. The aperture adjustment assembly 3 is disposed within the receiving space and located between the front lens element 12 and the rear lens element 22. The front lens assembly 1 mounts and fixes the front lens element 12 via the lens barrel 11, through which light can be converged and image aberration corrected; the rear lens assembly 2 mounts and fixes the rear lens element 22 via the base 21, through which fine imaging and residual aberration elimination are achieved. The receiving space between the lens barrel 11 and the base 21 is used to accommodate the aperture adjustment assembly 3.

[0067] Furthermore, such as Figure 5 As shown, one of the lens barrel 11 and the base 21 has an outer arc-shaped edge 111 circumferentially mounted, and the other has an inner arc-shaped edge 211 mounted. The outer arc-shaped edge 111 is positioned and installed on the outside of the inner arc-shaped edge 211. By positioning and installing the outer arc-shaped edge 111 on the outside of the inner arc-shaped edge 211, the lens barrel 11 and the base 21 are positioned and installed.

[0068] In this embodiment, an outer arc-shaped edge 111 is mounted on the lens barrel 11, and an inner arc-shaped edge 211 is mounted on the base 21. A rectangular support carrier 31 is provided between the lens barrel 11 and the base 21 for installation. To ensure installation strength and resistance to deformation, cylindrical reinforcing ribs 212 are provided on both sides of the inner arc-shaped edge 211. The support carrier 31 is fixed to the lens barrel 11 by locking components 34. In this embodiment, the locking components 34 are M1.4 screws, with positioning posts 314 extending from three M1.4 screw support seats, serving to assist in positioning and enhance connection stability. This method ensures installation strength with only three screws, saves space and reduces production and maintenance costs, and ensures the aperture assembly is fixed within the lens barrel 11, precisely locking the aperture on the designed optical axis, allowing light to pass symmetrically through the center of the aperture.

[0069] It should be noted that the assembly gap between the aperture adjustment assembly 3 and the lens barrel 11 must be ≤0.1mm to prevent stray light from entering the optical system through the gap.

[0070] The center of the aperture adjustment assembly 3 must coincide with the optical axis of the front lens group 1 and the rear lens group 2 (the coaxiality error requirement is ≤0.02mm).

[0071] The axial installation position of the aperture adjustment assembly 3 within the lens barrel 11 must ensure that the distance between it and the front lens group 1 and the rear lens group 2 is accurate (error ≤ ±0.05mm) to avoid changing the focal length or focal plane of the optical system.

[0072] When securing the aperture adjustment assembly 3 to the lens barrel 11 with the 3×M1.4 screws, ensure it is tightened securely and not loose.

[0073] The variable aperture lens structure has fewer light-shielding blades (32), resulting in a lower load on the drive mechanism and faster opening and closing action. The built-in design makes the aperture adjustment assembly (3) more compact with the front lens group (1) and rear lens group (2), saving internal space and providing strong resistance to external impacts, making it suitable for miniaturized and lightweight lenses. The fewer parts and lower assembly difficulty significantly reduce production and maintenance costs.

[0074] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A variable aperture lens structure, characterized in that, The system includes a front lens group (1), a rear lens group (2), and an aperture adjustment assembly (3) disposed between the front lens group (1) and the rear lens group (2). The aperture adjustment assembly (3) includes: A carrier assembly is disposed between the front lens group (1) and the rear lens group (2), and the carrier assembly is provided with a first light-transmitting hole (331). Two light-blocking blades (32) are slidably disposed on the carrier assembly along a first direction. The two light-blocking blades (32) can move closer to each other or further away from each other. When the two light-blocking blades (32) move closer to each other, they form a second light-transmitting hole (320) on the inner periphery of the first light-transmitting hole (331). When the two light-blocking blades (32) move further away from each other, they can stop on the outer periphery of the first light-transmitting hole (331).

2. The variable aperture lens structure according to claim 1, characterized in that, The carrier component includes: A support carrier (31) is provided with an avoidance through hole (310), and the light-shielding blade (32) is slidably disposed on the support carrier (31). A light-shielding cover plate (33) is disposed on the side of the light-shielding blade (32) away from the support carrier (31). The light-shielding cover plate (33) is provided with a first light-transmitting hole (331). The first light-transmitting hole (331) is correspondingly disposed with the avoidance through hole (310), and the diameter of the first light-transmitting hole (331) is less than or equal to the diameter of the avoidance through hole (310).

3. The variable aperture lens structure according to claim 2, characterized in that, The support carrier (31) has a groove (311) on the side facing the light-shielding cover (33). The groove (311) extends along the first direction. The two side walls of the groove (311) along the first direction are recessed with embedding grooves (3111). The two light-shielding blades (32) are slidably disposed in the groove (311) along the first direction, and at least part of the structure is slidably disposed in the corresponding embedding groove (3111). The light-shielding cover (33) covers the support carrier (31) and can block the opening of the groove (311).

4. The variable aperture lens structure according to claim 3, characterized in that, The groove (311) is a rectangular groove. The long side of the groove (311) extends in the first direction, and the short side of the groove (311) extends in the second direction. The light-shielding blade (32) is located in the groove (311) and the corresponding embedding groove (3111) along the second direction.

5. The variable aperture lens structure according to claim 3, characterized in that, When the two light-blocking blades (32) form the second light-transmitting hole (320), the structures of the two light-blocking blades (32) are partially non-coplanar and overlap each other.

6. The variable aperture lens structure according to claim 5, characterized in that, The groove (311) and the embedding slot (3111) are provided with a support portion (312) extending along the first direction. The support portion (312) includes a first protrusion (3121) and a second protrusion (3122) connected together. Both the first protrusion (3121) and the second protrusion (3122) extend along the first direction. The height of the first protrusion (3121) is higher than that of the second protrusion (3122). One of the light-shielding blades (32) is slidably disposed on the first protrusion. Part (3121), another light-shielding blade (32) is slidably disposed on the second protrusion (3122). The light-shielding blade (32) supported on the first protrusion (3121) is the first light-shielding blade, and the light-shielding blade (32) supported on the second protrusion (3122) is the second light-shielding blade. The height of the first light-shielding blade is higher than that of the second light-shielding blade, so that when the second light-transmitting hole (320) is formed, the ends of the two light-shielding blades (32) that are close to each other overlap.

7. The variable aperture lens structure according to claim 6, characterized in that, The end face of the first protrusion (3121) connected to the second protrusion (3122) forms a first limiting structure (3123), and the second light-shielding leaf can abut against the first limiting structure (3123). The sidewall of the groove (311) is provided with a second limiting structure (313), and the first light-shielding blade can abut against the second limiting structure (313). When the second light-shielding blade abuts against the first limiting structure (3123), and the first light-shielding blade abuts against the second limiting structure (313), the first light-shielding blade and the second light-shielding blade form the second light-transmitting hole (320).

8. The variable aperture lens structure according to any one of claims 1-7, characterized in that, The two light-shielding blades (32) are provided with arc-shaped grooves (321) at their ends that are close to each other, and the two light-shielding blades (32) are close to each other to form the second light-transmitting hole (320) by the two arc-shaped grooves (321).

9. The variable aperture lens structure according to any one of claims 1-7, characterized in that, The front lens assembly (1) includes a lens barrel (11) and a front lens (12). The front lens (12) is disposed inside the lens barrel (11) and connected to the lens barrel (11). The rear lens assembly (2) includes a base (21) and a rear lens (22). The rear lens (22) is disposed in the base (21) and connected to the base (21). The lens barrel (11) is connected to the base (21), and an accommodating space is formed between the lens barrel (11) and the base (21). The aperture adjustment assembly (3) is disposed in the accommodating space and is located between the front lens (12) and the rear lens (22).

10. The variable aperture lens structure according to claim 9, characterized in that, One of the lens barrel (11) and the base (21) is provided with an outer arc edge (111) in the circumferential direction, and the other is provided with an inner arc edge (211). The outer arc edge (111) is positioned and installed on the outside of the inner arc edge (211).

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