Double-layer adjusting lens structure

Through the design of the double-layer adjustment lens structure, the adjustment components are used to switch between different states, and the integrated adjustment of the first lens and the second lens is achieved, solving the problem of misoperation of the existing adjustable filter during the adjustment process and improving the user experience.

CN223272765UActive Publication Date: 2025-08-26SHEN ZHEN NEEWER TECH CO LTD
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Patent Information

Application Number
CN202421991598.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-15
Publication Date
2025-08-26
Estimated Expiration
2034-08-15

AI Technical Summary

Technical Problem

During the adjustment process, the existing adjustable filters are prone to misoperation, inconvenient adjustment, and poor user experience.

Method used

A double-layer adjustment lens structure is designed, including a first mounting ring, a second mounting ring, a third mounting ring, a first lens, a second lens and an adjustment component. By switching the adjustment end of the adjustment component between different states, integrated adjustment of the first lens and the second lens is realized, and the operation process is simplified.

Benefits of technology

提高了滤光系数调节的便捷性,减少了误操作的可能性,提升了用户的操作体验。

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of camera accessories, in particular to a double-layer adjusting lens structure, which comprises a first mounting ring and a second mounting ring, the second mounting ring is rotatably connected with the first mounting ring; the first lens and the second mounting ring are coaxially arranged in the second mounting ring; the third mounting ring is rotatably arranged in the second mounting ring; the second lens and the third mounting ring are coaxially arranged in the third mounting ring; the adjusting assembly is arranged on the third mounting ring; the adjusting end of the adjusting assembly has a first state of being adjusted to abut against the second mounting ring and a second state of being adjusted to be separated from the second mounting ring. The technical problems that in the adjusting process of an existing adjustable filter, due to the fact that a user needs to observe camera shooting content, misoperation is prone to occurring when different frame bodies are adjusted, adjustment is inconvenient, and user experience is poor are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of camera accessories, in particular to a double-layer adjustment lens structure. Background Art

[0002] When shooting videos, you often encounter scenes with different brightness and darkness, or scenes that need to eliminate reflections. If you need to shoot from beginning to end, you need to install an adjustable filter and anti-reflection product and perform dimming operations on the camera. Generally, an adjustable filter is set on the camera for adjustment.

[0003] Existing adjustable filters generally include multiple frames arranged in sequence, with adjacent frames connected by rotation. Different lenses are set in the multiple frames. The filter coefficient is adjusted by adjusting each frame to different angles. However, during the adjustment process, since the user needs to observe the camera content, it is easy to make mistakes when adjusting different frames, the adjustment is inconvenient, and the user experience is poor. Utility Model Content

[0004] The utility model provides a double-layer adjustable lens structure, which solves the technical problems of the existing adjustable filter in that, during the adjustment process, the user needs to observe the camera content, which makes it easy to make mistakes when adjusting different frames, resulting in inconvenient adjustment and poor user experience.

[0005] In view of this, the present invention provides a double-layer adjustable lens structure, comprising:

[0006] a first mounting ring;

[0007] a second mounting ring, rotatably connected to the first mounting ring;

[0008] a first lens, coaxially arranged in the second mounting ring with the second mounting ring;

[0009] a third mounting ring, rotatably disposed within the second mounting ring;

[0010] a second lens, coaxially arranged in the third mounting ring;

[0011] An adjusting component is provided on the third mounting ring; an adjusting end of the adjusting component has a first state of being adjusted to abut against the second mounting ring, and a second state of being adjusted to be separated from the second mounting ring.

[0012] Optionally, the adjustment assembly includes an adjusting member and a handle; a groove is provided on the circumferential side of the second mounting ring around its axial direction, and the position of the groove corresponds to the position of the third mounting ring; one end of the adjusting member passes through the groove and is connected to the third mounting ring, and the other end is movably sleeved with the handle along its axial direction; the handle has a first state of moving to abut the second mounting ring, and a second state of moving to separate from the second mounting ring.

[0013] Optionally, the adjusting member is threadably connected to the handle.

[0014] Optionally, the adjusting member is an adjusting screw.

[0015] Optionally, the adjusting member is threadedly connected to the third mounting ring.

[0016] Optionally, it also includes:

[0017] A feedback component is provided between the first mounting ring and the second mounting ring, and is used to provide feedback on the rotation angle of the second mounting ring on the first mounting ring.

[0018] Optionally, the feedback component includes a positioning member and an elastic member;

[0019] The second mounting ring is provided with a first positioning groove, and the positioning member is movably disposed in the first positioning groove; the elastic member is disposed between the positioning member and the groove bottom of the first positioning groove, and is used to abut the positioning member and move away from the groove bottom of the first positioning groove;

[0020] The first mounting ring is provided with a plurality of second positioning grooves corresponding to the positioning member around its axial direction, and is used for adapting and clamping with one end of the positioning member.

[0021] Optionally, the positioning member is a ball.

[0022] Optionally, the elastic member is a spring.

[0023] Optionally, the first lens is a neutral density lens;

[0024] And / or, the second lens is an anti-reflective lens.

[0025] The technical solution of this utility model has the following advantages:

[0026] In the present invention, when it is necessary to perform dimming operation on the camera equipment, the adjusting end of the adjusting assembly on the third mounting ring can be adjusted to the first state of abutting the third mounting ring. At this time, the third mounting ring and the second mounting ring are in a fixed state, and the third mounting ring and the second mounting ring can be driven by the adjusting assembly to rotate relative to the first mounting ring. During this process, the first lens and the second lens rotate with the second mounting ring and the third mounting ring to adjust the filter coefficient. After the filter coefficient is adjusted when the adjusting end of the adjusting assembly is in the first state, the adjusting end of the adjusting assembly can be adjusted to the second state, that is, the second mounting ring and the third mounting ring can rotate relative to each other. At this time, the adjusting assembly only drives the third mounting ring to rotate, thereby realizing separate adjustment of the second lens, and the position of the first lens remains unchanged, thereby realizing further adjustment of the filter coefficient and improving the adjustment effect. The utility model provides an adjustment component on the third mounting ring, and switches between the first state and the second state through the adjustment end of the adjustment component, thereby integrating the adjustment operation of the first lens and the second lens on the adjustment component, making it easy to adjust the angle of the first lens and the second lens to achieve adjustment of the filter coefficient. The switching method is simple, which is convenient for users to take into account both photography and adjustment, effectively reducing the possibility of misoperation and improving the user's operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a structural schematic diagram of a double-layer adjustable lens structure provided by the utility model at a first viewing angle;

[0029] Figure 2 This is a schematic structural diagram of a double-layer adjustable lens structure provided by the present invention at a second viewing angle;

[0030] Figure 3 for Figure 2 The sectional view at AA in the figure;

[0031] Figure 4 An exploded view of a double-layer adjustable lens structure provided by the utility model at a third viewing angle;

[0032] Figure 5 An exploded view of a double-layer adjustable lens structure provided by the utility model at the fourth viewing angle;

[0033] Figure 6 for Figure 5 Enlarged view of point B in .

[0034] Description of reference numerals:

[0035] 1. First mounting ring; 2. Second mounting ring; 3. First lens; 4. Third mounting ring; 5. Second lens; 6. Adjustment assembly; 61. Adjustment member; 62. Handle; 7. Feedback assembly; 71. Positioning member; 72. Elastic member; 8. First positioning groove; 9. Second positioning groove; 10. Slot. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] See also Figures 1 to 6This embodiment provides a double-layer adjustment lens structure, including: a first mounting ring 1; a second mounting ring 2, rotatably connected to the first mounting ring 1; a first lens 3, coaxially arranged in the second mounting ring 2 with the second mounting ring 2; a third mounting ring 4, rotatably arranged in the second mounting ring 2; a second lens 5, coaxially arranged in the third mounting ring 4 with the third mounting ring 4; an adjustment component 6, arranged on the third mounting ring 4; the adjustment end of the adjustment component 6 has a first state of being adjusted to abut against the second mounting ring 2, and a second state of being adjusted to be separated from the second mounting ring 2.

[0042] It should be noted that the first mounting ring 1 , the second mounting ring 2 , the third mounting ring 4 , the first lens 3 and the second lens 5 are coaxially arranged.

[0043] In this embodiment, when it is necessary to perform a dimming operation on the camera equipment, the adjusting end of the adjusting component 6 on the third mounting ring 4 can be adjusted to the first state of abutting the third mounting ring 4. At this time, the adjusting end of the adjusting component 6 abuts against the third mounting ring 4 and applies a force, so that the third mounting ring 4 and the second mounting ring 2 are in a fixed state. The adjusting component 6 can drive the third mounting ring 4 and the second mounting ring 2 to rotate relative to the first mounting ring 1. During this process, the first lens 3 and the second lens 5 rotate along with the second mounting ring 2 and the third mounting ring 4 to adjust the filter coefficient. After the filter coefficient is adjusted in the first state when the adjusting end of the adjusting component 6 is in the first state, the adjusting end of the adjusting component 6 can be adjusted to the second state, that is, the second mounting ring 2 and the third mounting ring 4 can rotate relative to each other. At this time, the adjusting component 6 only drives the third mounting ring 4 to rotate, thereby achieving separate adjustment of the second lens 5, and the position of the first lens 3 remains unchanged, thereby achieving further adjustment of the filter coefficient and improving the adjustment effect. In this embodiment, an adjustment component 6 is provided on the third mounting ring 4, and the adjustment end of the adjustment component 6 is switched between the first state and the second state, thereby integrating the adjustment operation of the first lens 3 and the second lens 5 on the adjustment component 6, so as to facilitate adjustment of the angle of the first lens 3 and the second lens 5 to achieve adjustment of the filter coefficient. The switching method is simple, which is convenient for users to take into account both photography and adjustment, effectively reduces the possibility of misoperation, and improves the user's operating experience.

[0044] Example 2

[0045] As a further improvement to Example 1, Figures 1 to 3As shown, the adjustment assembly 6 includes an adjustment member 61 and a handle 62; a groove 10 is provided on the circumferential side of the second mounting ring 2 around its axial direction, and the position of the groove 10 corresponds to the position of the third mounting ring 4; one end of the adjustment member 61 passes through the groove 10 and is connected to the third mounting ring 4, and the other end is movably provided with a handle 62 along its axial direction; the handle 62 has a first state of moving to abut the second mounting ring 2, and a second state of moving to separate from the second mounting ring 2.

[0046] It should be noted that the adjusting member 61 is loosely fitted with the slot 10 , so that the adjusting member 61 can move in the slot 10 to drive the third mounting ring 4 to rotate in the second mounting ring 2 .

[0047] In this embodiment, a slot 10 is provided on the second mounting ring 2 to facilitate the movement of the adjusting member 61 in the slot 10, and the adjusting member 61 is connected to the third mounting ring 4. When the first lens 3 and the second lens 5 need to be adjusted and rotated simultaneously to adjust the filter coefficient, the adjusting handle 62 is moved on the adjusting member 61 toward the third mounting ring 4 until it abuts against the second mounting ring 2, and the second mounting ring 2 is clamped between the handle 62 and the third mounting ring 4 by the handle 62, so that the second mounting ring 2 and the third mounting ring 4 remain in a relatively fixed state. Then, the second mounting ring 2 and the third mounting ring 4 can be driven to rotate together by the handle 62, and rotate a preset angle relative to the first mounting ring 1, thereby realizing the adjustment of the filter coefficient of the camera device; when the second lens 3 and the second lens 5 need to be adjusted separately, the adjusting handle 62 is moved toward the third mounting ring 4 on the adjusting member 61 until it abuts against the second mounting ring 2. When the lens 5 is adjusted, the adjustment handle 62 moves away from the third mounting ring 4 on the adjustment member 61 and away from the second mounting ring 2. At this time, the handle 62 and the third mounting ring 4 no longer clamp the second mounting ring 2. Therefore, the third mounting ring 4 can rotate relatively in the second mounting ring 2. The handle 62 can drive the third mounting ring 4 to rotate in the second mounting ring 2, and then the second lens 5 can be adjusted separately. The adjustment method is simple, and it is convenient to switch between the first state and the second state through the same handle 62. The adjustment operations of the first lens 3 and the second lens 5 are integrated into one handle 62 to realize the adjustment of the rotation angle between the first lens 3 and the second lens 5, effectively reducing the possibility of misoperation during shooting and improving the user's operation feel and experience.

[0048] Specifically, the slot 10 is an arc-shaped structure with a preset arc, so that the handle 62 can drive the third mounting ring 4 to rotate a preset angle, that is, the slot 10 plays a limiting role, and the arc of the slot 10 can be determined according to actual conditions.

[0049] On the basis of the above embodiment, in a preferred embodiment, as Figure 3 As shown, the adjusting member 61 is threadedly connected to the handle 62 .

[0050] In this embodiment, the adjusting member 61 and the handle 62 are threadedly connected, which facilitates the movement of the adjusting handle 62 on the adjusting member 61 to achieve switching between the first state and the second state.

[0051] On the basis of the above embodiment, in a preferred embodiment, as Figure 1 and Figure 3 As shown, the adjusting member 61 is an adjusting screw.

[0052] In this embodiment, the adjusting member 61 is an adjusting screw. The head of the adjusting screw can be used to limit the adjusting member 61 to prevent the handle 62 from being separated from the adjusting member 61 when adjusted to the second state, thereby improving the operating experience.

[0053] On the basis of the above embodiment, in a preferred embodiment, as Figure 3 As shown, the adjusting member 61 is threadedly connected to the third mounting ring 4 .

[0054] In this embodiment, the adjusting member 61 is threadedly connected to the third mounting ring 4, which is convenient for installation and disassembly, and also easy for replacement when damaged.

[0055] On the basis of the above embodiment, in a preferred embodiment, as Figures 3 to 5 As shown, the double-layer adjustment lens structure further includes: a feedback component 7, which is arranged between the first mounting ring 1 and the second mounting ring 2, and is used to provide feedback on the rotation angle of the second mounting ring 2 on the first mounting ring 1.

[0056] In this embodiment, a feedback component 7 is provided between the first mounting ring 1 and the second mounting ring 2 so that feedback is received when the second mounting ring 2 is adjusted to rotate relative to the first mounting ring 1, thereby providing the user with a clear sense of feedback. The user can determine the current adjustment angle of the first lens and its corresponding optical parameters by feel without observing the lens. The user can simultaneously confirm the photographic content and the adjustment status of the first lens 3 and the second lens 5, which is convenient for use.

[0057] On the basis of the above embodiment, in a preferred embodiment, as Figures 3 to 6 As shown, the feedback assembly 7 includes a positioning member 71 and an elastic member 72; a first positioning groove 8 is provided on the second mounting ring 2, and the positioning member 71 is movably arranged in the first positioning groove 8; the elastic member 72 is arranged between the positioning member 71 and the bottom of the first positioning groove 8, and is used to abut the positioning member 71 and move toward the bottom of the first positioning groove 8 away from the first positioning groove 8; a plurality of second positioning grooves 9 are provided on the first mounting ring 1 around its axial direction corresponding to the positioning member 71, which are used to adapt and engage with one end of the positioning member 71.

[0058] It should be noted that when the positioning member 71 is adjusted to the second positioning slot 9 , one end of the positioning member 71 is in the first positioning slot 8 , and the other end is in the second positioning slot 9 .

[0059] In this embodiment, the positioning member 71 always abuts the first mounting ring 1 under the action of the elastic member 72. When the second mounting ring 2 is rotated to the position of the positioning member 71 corresponding to the position of the second positioning groove 9, the end of the positioning member 71 away from the first positioning groove 8 falls into the second positioning groove 9, so that when the second mounting ring 2 is further rotated, a sense of obstruction is felt. This sense of obstruction is fed back to the user, allowing the user to clearly perceive the current adjustment state. Combined with observation of the camera equipment, the adjustment effect is improved to avoid over-adjustment or under-adjustment of the filter coefficient. In addition, there are multiple second positioning grooves 9 corresponding to different filter coefficients. When it is necessary to continue to rotate the second mounting ring 2, the positioning member 71 compresses the elastic member 72 and moves toward the first positioning groove 8, and then disengages from the second positioning groove 9 to move to the next second positioning groove 9. The adjustment method is simple and convenient, providing the user with clear feedback. The current adjustment angle of the first lens and its corresponding optical parameters can be determined by feel without observing the lens. The user can simultaneously confirm the photographic content and the adjustment state of the first lens 3 and the second lens 5, which is convenient to use.

[0060] On the basis of the above embodiment, in a preferred embodiment, as Figures 3 to 6 As shown, the positioning member 71 is a ball.

[0061] It should be noted that the diameter of the ball is greater than the depth of the second positioning groove 9 .

[0062] In this embodiment, the positioning member 71 is a ball, which is convenient for the ball to escape from the second positioning groove 9 when the force is increased, so as to facilitate adjustment.

[0063] On the basis of the above embodiment, in a preferred embodiment, as Figures 3 to 5 As shown, the elastic member 72 is a spring.

[0064] In this embodiment, the elastic member 72 is a spring, which is convenient for applying a force to the positioning member 71 or the positioning member 71 compressing the spring, so that the positioning member 71 moves back and forth in the first positioning groove 8 for adjustment.

[0065] Based on the above embodiment, in a preferred embodiment, the first lens 3 is a neutral density lens.

[0066] In this embodiment, the first lens 3 is a neutral density filter, which is convenient for adjusting the amount of light entering the camera device.

[0067] Based on the above embodiment, in a preferred embodiment, the second lens 5 is an anti-reflective mirror.

[0068] Specifically, the first lens 3 is located in the first mounting ring 1 , and the third mounting ring 4 is located on a side of the second mounting ring 2 facing away from the first mounting ring 1 .

[0069] In this embodiment, the second lens 5 is an anti-reflection mirror, which can reduce reflections.

[0070] Specifically, the anti-reflection filter is a polarizing filter.

[0071] The specific working principle of the double-layer adjustment lens structure provided by this embodiment is as follows: when it is necessary to perform a dimming operation on the camera equipment, the handle 62 can be moved on the adjustment screw to the first state where it abuts the third mounting ring 4. At this time, under the clamping action of the handle 62 and the third mounting ring 4, the third mounting ring 4 and the second mounting ring 2 are in a fixed state. The handle 62 can be used to drive the third mounting ring 4 and the second mounting ring 2 to rotate relative to the first mounting ring 1. During this process, the first lens 3 and the second lens 5 rotate with the second mounting ring 2 and the third mounting ring 4 to adjust the filter coefficient. During the rotation of the second mounting ring 2 relative to the first mounting ring 1, when the position of the positioning member 71 is aligned with the second positioning groove 9, the second lens 3 and the second lens 5 rotate with the second mounting ring 2 and the third mounting ring 4. When the position of the second lens 5 corresponds to the position of the first lens 5, the end of the positioning member 71 facing away from the first positioning groove 8 falls into the second positioning groove 9, causing a sense of obstruction when the second mounting ring 2 is further rotated. This sense of obstruction is fed back to the user, allowing the user to clearly perceive the current adjustment state and, combined with observation of the camera equipment, improve the adjustment effect. After the filter coefficient is adjusted in the first state with the handle 62, the handle 62 can be adjusted to the second state, that is, the second mounting ring 2 and the third mounting ring 4 can rotate relative to each other. In this case, the handle 62 only drives the third mounting ring 4 to rotate, thereby achieving independent adjustment of the second lens 5, while the position of the first lens 3 remains unchanged, achieving further adjustment of the filter coefficient and improving the adjustment effect. In this embodiment, by providing an adjustment assembly 6 on the third mounting ring 4 and switching the handle 62 of the adjustment assembly 6 between the first and second states, the adjustment operations of the first and second lenses 3, 5 are integrated into a single handle 62, facilitating adjustment of the angles of the first and second lenses 3, 5 to achieve adjustment of the filter coefficient. The simple switching method allows the user to easily balance photography and adjustment, effectively reducing the possibility of misoperation and improving the user's operating experience. The present invention solves the technical problem that in the existing adjustable filter adjustment process, since the user needs to observe the camera content, it is easy to make mistakes when adjusting different frames, the adjustment is inconvenient, and the user experience is poor.

[0072] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A double-layer adjustment lens structure, characterized in that: include: A first mounting ring (1); a second mounting ring (2) rotatably connected to the first mounting ring (1); A first lens (3) is coaxially arranged inside the second mounting ring (2) with the second mounting ring (2); a third mounting ring (4) rotatably disposed within the second mounting ring (2); a second lens (5) coaxially arranged with the third mounting ring (4) and inside the third mounting ring (4); An adjusting component (6) is arranged on the third mounting ring (4); the adjusting end of the adjusting component (6) has a first state of being adjusted to abut against the second mounting ring (2), and a second state of being adjusted to be separated from the second mounting ring (2).

2. The double-layer adjustment lens structure according to claim 1, characterized in that: The adjustment assembly (6) comprises an adjustment member (61) and a handle (62); a slot (10) is provided on the circumferential side of the second mounting ring (2) around its axial direction, and the position of the slot (10) corresponds to the position of the third mounting ring (4); one end of the adjustment member (61) passes through the slot (10) and is connected to the third mounting ring (4), and the other end is movably sleeved with the handle (62) along its axial direction; the handle (62) has a first state of moving to abut against the second mounting ring (2), and a second state of moving to separate from the second mounting ring (2).

3. The double-layer adjustment lens structure according to claim 2, characterized in that: The adjusting member (61) is threadably connected to the handle (62).

4. The double-layer adjustment lens structure according to claim 2, characterized in that: The adjusting member (61) is an adjusting screw.

5. The double-layer adjustment lens structure according to claim 2, characterized in that: The adjusting member (61) is threadedly connected to the third mounting ring (4).

6. The double-layer adjustment lens structure according to any one of claims 1 to 5, characterized in that: Also includes: A feedback component (7) is arranged between the first mounting ring (1) and the second mounting ring (2) and is used to provide feedback on the rotation angle of the second mounting ring (2) on the first mounting ring (1).

7. The double-layer adjustment lens structure according to claim 6, characterized in that: The feedback component (7) includes a positioning member (71) and an elastic member (72); The second mounting ring (2) is provided with a first positioning groove (8), and the positioning member (71) is movably arranged in the first positioning groove (8); the elastic member (72) is arranged between the positioning member (71) and the bottom of the first positioning groove (8), and is used for contacting the positioning member (71) and moving toward the bottom away from the first positioning groove (8); The first mounting ring (1) is provided with a plurality of second positioning grooves (9) around its axial direction corresponding to the positioning member (71), and is used for adapting and snapping with one end of the positioning member (71).

8. The double-layer adjustment lens structure according to claim 7, characterized in that: The positioning member (71) is a ball.

9. The double-layer adjustment lens structure according to claim 7, characterized in that: The elastic member (72) is a spring.

10. The double-layer adjustment lens structure according to claim 1, characterized in that: The first lens (3) is a neutral density lens; And / or, the second lens (5) is an anti-reflection lens.