Filter mechanism

Abstract

The utility model discloses a filter mechanism which comprises a connecting ring, a first filter assembly and a second filter assembly, the first filter assembly comprises a first filter ring and a first filter fixedly arranged on the first filter ring, and the second filter assembly comprises a second filter ring and a second filter fixedly arranged on the second filter ring. The first mirror ring, the second mirror ring and the connecting ring are coaxially arranged, the first mirror ring is rotationally connected with the second mirror ring and the connecting ring, and the first filter and the second filter are oppositely arranged at an interval. When a user rotates the first lens ring, the first filter is driven to rotate together, so that the position of the first filter is changed, and the function of the first filter assembly is adjusted, and when the user rotates the second lens ring, the second filter is driven to rotate together, so that the position of the second filter is changed, and the function of the second filter assembly is adjusted. A user can adjust the corresponding function of the filter mechanism only by rotating the corresponding filter ring without replacing different filter assemblies, so that the use of the user is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic equipment, in particular to a filter mechanism. Background Art

[0002] With the improvement of people's requirements for shooting quality, in some shooting scenarios, people will choose to install photographic and video shooting auxiliary equipment in front of the lens to assist shooting and achieve the effect of improving shooting quality. CPL mirror (Circular-Polarizing Filters) and VND mirror (Variable Neutral Density) are two commonly used filters on cameras. Among them, the polarizing mirror mainly functions as a polarizer to weaken reflected light and is commonly used to filter out reflected light from water surfaces, glass, etc., making the image clearer; the variable neutral density mirror mainly functions as a neutral density filter to reduce the amount of transmitted light. When shooting outdoors in strong sunlight or when a longer exposure time is required under normal light conditions, a neutral density filter is needed.

[0003] However, existing polarizing mirrors and variable neutral density mirrors are usually installed on the camera separately. When it is necessary to switch between the polarizing function of the polarizing mirror and the neutral density function of the variable neutral density mirror, one of them needs to be removed from the camera first, and then the other needs to be installed on the camera. The switching operation is cumbersome and inconvenient for users. Summary of the Utility Model

[0004] In view of this, the utility model provides a new filter mechanism to solve the problem that the switching operation of different filters in the prior art is cumbersome and inconvenient for users.

[0005] On the one hand, the present application provides a filter mechanism, including a connecting ring, a first filter component, and a second filter component. The first filter component includes a first lens ring and a first filter fixedly installed on the first lens ring. The second filter component includes a second lens ring and a second filter fixedly installed on the second lens ring. The first lens ring, the second lens ring, and the connecting ring are coaxially arranged, and the first lens ring is rotatably connected to the second lens ring and the connecting ring respectively. The first filter and the second filter are arranged opposite to each other at intervals.

[0006] In some embodiments, a first operation part is convexly provided on the outer side of the first lens ring, and the first operation part is relatively fixed to the first lens ring.

[0007] In some embodiments, a second operation part is convexly provided on the outer side of the second lens ring, and the second operation part is relatively fixed to the second lens ring.

[0008] In some embodiments, when the first operating portion and the second operating portion are in circumferential abutment, the first lens ring and the second lens ring can be rotated synchronously through the first operating portion and the second operating portion.

[0009] In some embodiments, the first operating portion and the second operating portion are arranged along the circumference of the first lens ring, the first operating portion is spaced from the second lens ring, and the second operating portion is spaced from the first lens ring.

[0010] In some embodiments, uneven structures for increasing friction are provided on the outer sides of both the first operating portion and the second operating portion.

[0011] In some embodiments, the second lens ring includes a main body portion and an edge portion surrounding the outer periphery of the main body portion. At least a part of the main body portion is located radially inside the first lens ring and is rotatably connected to the first lens ring. The edge portion is located axially outside the first lens ring, and the second operating portion is connected to the edge portion.

[0012] In some embodiments, the first operating portion includes a first operating main body and an extension portion. The first operating main body is fixedly connected to the first lens ring and extends along the circumference of the first lens ring. The first operating main body is located radially outside the first lens ring and the edge portion. The extension portion is connected to the radially inner side of the first operating main body, and the edge portion is located between the first lens ring and the extension portion.

[0013] In some embodiments, the second operating portion includes a second operating main body and a connecting portion connected to the second operating main body. The second operating main body is located radially outside the edge portion and the first lens ring. The connecting portion is located axially outside the edge portion and is fixedly connected to the edge portion; or

[0014] The first operating portion is fixed axially outside the edge portion.

[0015] In some embodiments, one of the second operating portion and the edge portion is provided with a protruding portion, and the other is correspondingly provided with a recessed portion. The protruding portion is inserted into the recessed portion so that the second operating portion and the edge portion are relatively fixed in the circumferential direction.

[0016] In some embodiments, the recessed portion is provided on the edge portion and penetrates the edge portion in the radial direction of the second lens ring.

[0017] In some embodiments, the number of both the first operating portion and the second operating portion is one; or

[0018] The number of the first operation parts is multiple, and the multiple first operation parts are arranged at intervals along the circumferential direction of the first lens ring, and the second operation part is located between two adjacent first operation parts.

[0019] In some embodiments, the damping force between the first lens ring and the second lens ring is less than the damping force between the first lens ring and the connecting ring.

[0020] On the other hand, the present application provides a filter mechanism, including a connecting ring, a first filter assembly and a second filter assembly. The first filter assembly includes a first lens ring and a first filter fixedly installed on the first lens ring. The second filter assembly includes a second lens ring and a second filter fixedly installed on the second lens ring. The first lens ring, the second lens ring and the connecting ring are coaxially arranged, and the first lens ring is respectively rotatably connected to the second lens ring and the connecting ring. The first filter and the second filter are arranged opposite to each other at intervals;

[0021] The first lens ring is provided with a first operation part, and the second lens ring is provided with a second operation part. The first lens ring and the second lens ring can form a following rotation state through the cooperation of the first operation part and the second operation part. In the following rotation state, the first lens ring is relatively fixed to the second lens ring in one direction, and the second lens ring can rotate relative to the first lens ring in this direction.

[0022] In some embodiments, the first operation part is fixedly arranged on the outer side of the first lens ring, the second operation part is fixedly arranged on the outer side of the second lens ring, and the first operation part and the second operation part are arranged along the circumferential direction of the first lens ring. In the following rotation state, the first operation part abuts against the second operation part.

[0023] The filter mechanism provided by the utility model includes a connecting ring, a first filter assembly and a second filter assembly, so that the filter mechanism has the functions of the first filter assembly and the second filter assembly at the same time. Moreover, the first lens ring of the first filter assembly is respectively rotatably connected to the connecting ring and the second lens ring of the second filter assembly, so that both the first lens ring and the second lens ring can rotate relative to the connecting ring. When the user rotates the first lens ring, the first filter is driven to rotate together, so that the position of the first filter changes, thereby adjusting the function of the first filter assembly. When the second lens ring is rotated, the second filter is driven to rotate together, so that the position of the second filter changes, thereby adjusting the function of the second filter assembly. The user only needs to rotate the corresponding lens ring to adjust the corresponding function of the filter mechanism, and there is no need for the user to replace different filter assemblies, which is convenient for the user to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a filter mechanism provided by an embodiment of the present utility model;

[0025] Figure 2 is Figure 1 an exploded view diagram of the filter mechanism shown in

[0026] Figure 3 is Figure 1 a cross-sectional view of the filter mechanism shown in

[0027] Figure 4 is Figure 2 a structural diagram of the first lens ring and the first operating part shown in

[0028] Figure 5 is Figure 2 a structural diagram of the second lens ring shown in

[0029] Figure 6 is Figure 2 a structural diagram of the second operating part shown in

[0030] In the figure: 10, filter mechanism; 12, connecting ring; 14, first filter component; 16, second filter component; 18, connection port; 26, first lens ring; 28, first filter; 30, second lens ring; 32, second filter; 34, main body part; 36, edge part; 38, first operating part; 40, concave-convex structure; 42, first operating body; 44, extension part; 46, second operating part; 48, second operating body; 50, connection part; 52, protruding part; 54, recessed part. Specific embodiments

[0031] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0032] It should be noted that all the directional indications (such as up, down, left, right, front, back, inside, outside, top, bottom...) in the embodiments of the present utility model are only used to explain the relative position relationship between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0033] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, the element can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0034] Please refer to Figures 1 to 3, a filter mechanism 10 provided by an embodiment of the present utility model is used to be installed on a photographic or video camera to assist in shooting and improve the shooting quality. In this application, a sports camera is taken as an example of the photographic or video camera for illustration.

[0035] The filter mechanism 10 includes a connecting ring 12, a first filter component 14, and a second filter component 16. The connecting ring 12 is used to connect with the sports camera to install the filter mechanism 10 on the sports camera. The first filter component 14 is rotatably connected to the connecting ring 12 and the second filter component 16 respectively, so that both the first filter component 14 and the second filter component 16 can rotate relative to the connecting ring 12 to adjust the positions of the first filter component 14 and the second filter component 16, thereby adjusting the functions of the first filter component 14 and the second filter component 16.

[0036] Specifically, please refer to Figure 2 , a connection port 18 is provided on the connecting ring 12. The central axis of the connection port 18 is collinear with the central axis of the connecting ring 12. The connecting ring 12 is connected to the sports camera through this connection port 18.

[0037] The specific type of the connection port 18 is not limited and can be set according to the specific structure of the corresponding connection part on the sports camera, such as a T-mount, a threaded port, etc.

[0038] The specific types of the first filter component 14 and the second filter component 16 are not limited. For example, a UV filter component (UltraViolet, ultraviolet filter), a CPL filter component (Circular-Polarizing Filters, polarizing filter), a VND filter (Variable Neutral Density, adjustable neutral density filter), a GND filter component (Graduated Neutral Density Filters, graduated neutral density filter), etc. In this application, the first filter component 14 is an adjustable neutral density filter component, and the second filter component 16 is a polarizing filter component.

[0039] In one embodiment, the first filter component 14 and the second filter component 16 can rotate synchronously or relatively, so that the user can rotate the first filter component 14 and the second filter component 16 synchronously or relatively according to needs, which is convenient for the user to adjust the functions of the first filter component 14 and the second filter component 16.

[0040] Please refer to Figure 3, the damping force between the first filter component 14 and the connection ring 12 is greater than the damping force between the first filter component 14 and the second filter component 16. Therefore, the external force required to drive the first filter component 14 to rotate is greater than the external force required to drive the second filter component 16 to rotate. When the external force for driving the second filter component 16 to rotate is greater than the damping force between the first filter component 14 and the second filter component 16 and less than the damping force between the first filter component 14 and the connection ring 12, the second filter component 16 can rotate relative to the first filter component 14. When the external force for driving the first filter component 14 to rotate is greater than the damping force between the first filter component 14 and the connection ring 12, the first filter component 14 rotates relative to the connection ring 12 and can drive the second filter component 16 to rotate.

[0041] In one embodiment, the first filter component 14 includes a first lens ring 26 and a first filter 28. The first lens ring 26 rotates with the connection ring 12 and the second filter component 16 respectively, and the first filter 28 is fixedly installed inside the first lens ring 26. When the user rotates the first lens ring 26, the first filter 28 is driven to move together, thereby adjusting the position of the first filter 28. In this application, the first filter 28 is a polarizing filter, and when the user rotates the first lens ring 26, the polarization function of the filter mechanism 10 can be adjusted.

[0042] The second filter component 16 includes a second lens ring 30 and a second filter 32. The second lens ring 30 is rotatably connected to the first lens ring 26, and the second filter 32 is fixedly installed inside the second lens ring 30. The first lens ring 26, the second lens ring 30, and the connection ring 12 are coaxially arranged, that is, the central axes of the first lens ring 26, the second lens ring 30, and the connection ring 12 are collinear. The first filter 28 and the second filter 32 are arranged opposite to each other at intervals and correspond to the connection port on the connection ring 12, so that after the filter mechanism 10 is installed on the camera, the first filter 28 and the second filter 32 correspond to the camera lens. When the user rotates the second lens ring 30, the second filter 32 can be driven to move together, thereby adjusting the position of the second filter 32. In this application, the second filter 32 is an adjustable neutral density filter, and when the user rotates the second lens ring 30, the neutral density function of the filter mechanism 10 can be adjusted.

[0043] In this embodiment, please refer to Figure 3 and Figure 4 , the connection ring 12 at least partially surrounds the outer periphery of the first lens ring 26 and is rotatably connected to the first lens ring 26. The first lens ring 26 at least partially surrounds the outer periphery of the second lens ring 30 and is rotatably connected to the second lens ring 30, and the connection ring 12, the first lens ring 26, and the second lens ring 30 are coaxially arranged to enhance the overall structural compactness. The first filter 28 and the second filter 32 are arranged at intervals along the axial direction of the first lens ring 26.

[0044] Please refer to Figure 3 and Figure 5The second mirror ring 30 includes a main body 34 and an edge portion 36 surrounding the outer circumference of the main body 34. The main body 34 is at least partially located on the radial inner side of the first mirror ring 26 and is rotatably connected to the first mirror ring 26. The edge portion 36 is located on the axial outer side of the first mirror ring 26. That is, the second mirror ring 30 is partially located on the inner side of the first mirror ring 26 and is rotatably connected to the first mirror ring 26, and partially protrudes outside the first mirror ring 26 to be connected to other components. The second filter 32 is fixed on the inner side of the main body 34.

[0045] Preferably, the main body portion 34 and the edge portion 36 are integrally formed to enhance the overall strength of the second mirror ring 30 .

[0046] In one embodiment, see Figure 4 A first operating portion 38 protrudes from the outside of the first lens ring 26. The first operating portion 38 is fixed relative to the first lens ring 26 so that the first operating portion 38 and the first lens ring 26 can rotate synchronously. Since the first operating portion 38 protrudes from the outside of the first lens ring 26, when a user needs to adjust the position of the first filter 28, the user can press the first operating portion 38 with his hand, and then use the first operating portion 38 to drive the first lens ring 26 to rotate, and the first filter 28 to rotate together. The user can also turn the first operating portion 38 to drive the first lens ring 26 to rotate. When the user needs to adjust the position of the second filter 32, the user can firmly press the first operating portion 38 with his finger to keep the first lens ring 26 and the connecting ring 12 relatively fixed, and then rotate the second lens ring 30. This prevents the second lens ring 30 from rotating and affecting the function of the first filter assembly 14 during the rotation process, thereby facilitating user operation.

[0047] Specifically, the first filter 28 is a polarizing filter, and the second filter 32 is a neutral density filter. During the rotation of the second filter ring 30, the first operating part 38 is pressed to keep the first filter ring 26 and the connecting ring 12 relatively fixed, so that the second filter ring 30 rotates relative to the first filter ring 26, thereby avoiding affecting the polarization function during the adjustment of the neutral density function.

[0048] The specific connection method between the first mirror ring 26 and the first operating portion 38 is not limited, and can be mechanically connected, integrally formed, glued, etc., as long as the first mirror ring 26 and the first operating portion 38 can rotate synchronously. In this embodiment, the first operating portion 38 is integrally formed with the first mirror ring 26 to achieve a fixed effect.

[0049] The first operating portion 38 is fixed to the first mirror ring 26 and is spaced apart from the second mirror ring 30, that is, the first operating portion 38 does not contact the second mirror ring 30, so no additional friction is generated between the two, thereby preventing the first mirror ring 26 and the second mirror ring 30 from being interfered with by the first operating portion 38 when they rotate relative to each other.

[0050] See alsoFigure 3 and Figure 4 On the outside of the first operation part 38, there is a concavo-convex structure 40 for increasing friction. When the user's finger presses or holds down on the first operation part 38, the finger will contact the concavo-convex structure 40 on the outside of the first operation part 38. The concavo-convex structure 40 can increase the frictional force between the first operation part 38 and the finger, and reduce the risk of slipping when rotating the first lens ring 26 or keeping the first lens ring 26 relatively fixed with respect to the connecting ring 12.

[0051] The first operation part 38 includes a first operation main body 42 and an extension part 44. The first operation main body 42 is fixedly connected to the first lens ring 26 and extends along the circumferential direction of the first lens ring 26. The first operation main body 42 is located radially outside the first lens ring 26 and the edge part 36. The extension part 44 is connected to the radially inner side of the first operation main body 42 and is axially spaced from the second lens ring 30. The edge part 36 of the second lens ring 30 is located between the first lens ring 26 and the extension part 44. By providing that the first operation part 38 includes the first operation main body 42 and the extension part 44, such that part of the first operation part 38 is located radially outside the first lens ring 26 and the edge part 36, and part is located axially outside the edge part 36, the volume of the first operation part 38 can be increased, facilitating contact with the user's finger. Moreover, the first operation main body 42 and the extension part 44 are respectively located on different sides of the first lens ring 26, which can avoid the problem that the first operation part 38 has too large a dimension in a certain direction.

[0052] The first operation main body 42 and the extension part 44 are respectively spaced from the corresponding surfaces of the edge part 36, such that the first operation part 38 does not contact the edge part 36, avoiding the problem that the relative rotation of the first lens ring 26 and the second lens ring 30 is affected due to friction caused by the contact.

[0053] Preferably, the first operation main body 42, the extension part 44, and the first lens ring 26 are integrally formed.

[0054] In an embodiment, please refer to Figure 5 and Figure 6 , on the outside of the second lens ring 30, a second operation part 46 protrudes. The second operation part 46 is relatively fixed to the second lens ring 30, such that the second operation part 46 and the second lens ring 30 can rotate synchronously. Since the second operation part 46 protrudes outside the second lens ring 30, when the user needs to rotate the second lens ring 30, the user can press on the first operation part 38 with a finger to keep the first lens ring 26 relatively fixed with respect to the connecting ring 12, and then press on the second operation part 46 with another finger. By rotating the second lens ring 30 through the second operation part 46 and driving the second filter 32 to rotate together, the second lens ring 30 rotates relative to the first lens ring 26, reducing the risk that the user contacts the first lens ring 26 during the process of rotating the second lens ring 30 and facilitating the user's operation.

[0055] The second operation part 46 is fixed on the second lens ring 30 and spaced from the first lens ring 26, that is, the second operation part 46 does not contact the first lens ring 26, so no additional frictional force is generated between the two, avoiding interference of the second operation part 46 when the first lens ring 26 and the second lens ring 30 rotate relative to each other.

[0056] An uneven structure 40 for increasing friction is provided on the outer side of the second operation part 46. When the user's finger presses on the second operation part 46, the finger will contact the uneven structure 40 on the outer side of the second operation part 46, and the uneven structure 40 can increase the frictional force between the second operation part 46 and the finger, reducing the risk of slipping during the rotation of the second lens ring 30.

[0057] It can be understood that the uneven structure 40 on the outer side of the first operation part 38 and the uneven structure 40 on the outer side of the second operation part 46 can be the same or different, as long as they can achieve the effect of increasing friction. In this embodiment, the uneven structure on the outer side of the first operation part 38 and the uneven structure 40 on the outer side of the second operation part 46 are different.

[0058] Along the circumferential direction of the first lens ring 26, the length of the first operation part 38 is greater than the length of the second operation part 46, facilitating the user to press the first operation part 38, so that the first lens ring 26 and the connection ring 12 are kept relatively fixed.

[0059] The specific connection method between the second lens ring 30 and the second operation part 46 is not limited. For example, mechanical connection, integral molding, glue fixation, etc., as long as the second lens ring 30 and the second operation part 46 can rotate synchronously. In this embodiment, the second operation part 46 is detachably connected to the second lens ring 30 and remains relatively fixed in the circumferential direction of the second lens ring 30.

[0060] The specific position of the second operation part 46 is not limited. For example, it can be entirely located axially and radially outside the edge part 36, or partially located radially outside the edge part 36 and partially located axially outside the edge part 36. In one embodiment, the second operation part 46 includes a second operation main body 48 and a connection part 50 connected to the second operation main body 48. The second operation main body 48 is located radially outside the edge part 36 and the first lens ring 26, and the connection part 50 is located axially outside the edge part 36 and fixedly connected to the edge part 36. By providing that the second operation part 46 includes two parts, namely the second operation main body 48 and the connection part 50, where the connection part 50 is used to connect to the edge part 36 of the second lens ring 30, and the second operation main body 48 is located radially outside the edge part 36 for contact with the user's finger, facilitating the user to rotate the second lens ring 30 through the second operation main body 48.

[0061] In this embodiment, please refer to Figure 6, a protruding portion 52 is provided on the second operating portion 46, and a recessed portion 54 is correspondingly provided on the edge portion 36. The protruding portion 52 is inserted into the recessed portion 54 so that the second operating portion 46 and the edge portion 36 are relatively fixed in the circumferential direction. Specifically, the protruding portion 52 is provided on the connecting portion 50 of the second operating portion 46. The cooperation mode of the protruding portion 52 and the recessed portion 54 is simple in assembly operation and can reduce the assembly difficulty of the second operating portion 46 and the second lens ring 30.

[0062] It can be understood that, in order to reduce the risk of separation between the second operating portion 46 and the edge portion 36, the protruding portion 52 of the second operating portion 46 and the recessed portion 54 of the edge portion 36 can be in interference fit, or an adhesive can be provided between the inner walls of the protruding portion 52 and the recessed portion 54.

[0063] Preferably, the second operating body 48, the connecting portion 50 and the protruding portion 52 are integrally formed to enhance the overall strength of the second operating portion 46.

[0064] The recessed portion 54 penetrates the edge portion 36 along the radial direction of the second lens ring 30, so that the protruding portion 52 on the connecting portion 50 can be inserted into the recessed portion 54 from the radial outside of the edge portion 36.

[0065] In another embodiment, the positions of the protruding portion and the recessed portion can also be interchanged, that is, a recessed portion is provided on the second operating portion, and a corresponding protruding portion is provided on the edge portion.

[0066] In one embodiment, please refer to Figure 3, the first operation part 38 and the second operation part 46 are arranged along the rotation direction of the first mirror ring 26 and the second mirror ring 30, so that the first operation part 38 and the second operation part 46 can be abutted against each other by the rotation of the first mirror ring 26 and / or the second mirror ring 30. Specifically, a part of the second operation part 46 extends axially along the second mirror ring 30 to the outside of the first mirror ring 26, increasing the axially extending area of the second operation part 46, facilitating the user to toggle or drive, and at the same time enabling the first operation part 38 and the second operation part 46 to form an arrangement effect along the circumferential direction of the first mirror ring 26. Since the damping force between the first mirror ring 26 and the connecting ring 12 is greater than the damping force between the first mirror ring 26 and the second mirror ring 30, the first mirror ring 26 will drive the second mirror ring 30 to rotate together when rotating. However, only relying on the damping force to drive the second mirror ring 30 to rotate cannot ensure that the two rotate completely synchronously. There may be a slight relative movement between the first mirror ring 26 and the second mirror ring 30 when the first mirror ring 26 drives the second mirror ring 30 to rotate. In this application, by setting the first operation part 38 and the second operation part 46, and arranging the first operation part 38 and the second operation part 46 along the circumferential direction of the first mirror ring 26, the first operation part 38 can be abutted against the second operation part 46. When the first operation part 38 and the second operation part 46 are abutted, when driving the first operation part 38 to move towards the second operation part 46, the first operation part 38 will be blocked by the second operation part 46, and the first operation part 38 will push the second operation part 46 to move together. The first operation part 38 and the second operation part 46 are relatively fixed to the first mirror ring 26 and the second mirror ring 30 respectively, so that the first mirror ring 26 and the second mirror ring 30 rotate synchronously, preventing relative rotation between the two when the first mirror ring 26 and the second mirror ring 30 need to rotate synchronously. Similarly, when the first operation part 38 and the second operation part 46 are abutted against each other, when driving the second operation part 46 to move towards the first operation part 38, the second operation part 46 will be blocked by the first operation part 38, so that the second operation part 46 will push the first operation part 38 to move together, and finally the first mirror ring 26 and the second mirror ring 30 form a synchronous rotation effect. When it is necessary to drive the second mirror ring 30 to rotate relative to the first mirror ring 26, the first operation part 38 can be pressed with a finger to keep the first mirror ring 26 relatively fixed to the connecting ring 12, and then the second operation part 46 can be driven by another finger to move in a direction away from the first operation part 38. At this time, the second operation part 46 will not be blocked by the first operation part 38, so the second mirror ring 30 can be rotated relative to the first mirror ring 26.

[0067] The specific number of the first operation part 38 and the second operation part 46 is not limited, and can be one or multiple. Moreover, the number of the first operation part 38 and the second operation part 46 can be the same or different.

[0068] In one embodiment, the number of the first operation part 38 and the second operation part 46 is both one. The second operation part 46 can rotate within the space between the two ends of the first operation part 38. Therefore, by controlling the length of the first operation part 38, the rotation angle of the second operation part 46 can be restricted.

[0069] In another embodiment, the number of the first operation parts 38 is multiple. The multiple first operation parts 38 are arranged at intervals along the circumferential direction of the first mirror ring 26. The second operation part 46 is located between two adjacent first operation parts 38. The second operation part 46 can move between two adjacent first operation parts 38. Therefore, by controlling the distance between two adjacent first operation parts 38, the rotation angle of the second operation part 46 can be restricted.

[0070] In another embodiment, the second operation part 46 does not axially extend to the outside of the first mirror ring 26, that is, the second operation part 46 is only arranged along the circumferential direction of the second mirror ring 30, or can axially extend away from the outside of the first mirror ring 26. The first operation part 38 and the second operation part 46 are in contact with each other along the circumferential direction of the second mirror ring 30. The second operation part 46 is in contact with the extension part 44, or the second operation part 46 is in contact with the first operation main body 42 and the extension part 44.

[0071] The present utility model further provides a filter mechanism, which includes a connecting ring 12, a first filter assembly 14 and a second filter assembly 16. The first filter assembly 14 includes a first mirror ring 26 and a first filter 28 fixedly installed on the first mirror ring 26. The second filter assembly 16 includes a second mirror ring 30 and a second filter 32 fixedly installed on the second mirror ring 30. The first mirror ring 26, the second mirror ring 30 and the connecting ring 12 are coaxially arranged, and the first mirror ring 26 is respectively rotationally connected to the connecting ring 12 and the second mirror ring 30. The first filter 28 and the second filter 32 are arranged oppositely at intervals along the axial direction of the first mirror ring 26. A first operation part 38 is provided on the first mirror ring 26, and a second operation part 46 is provided on the second mirror ring 30. The first mirror ring 26 and the second mirror ring 30 can form a following rotation state through the first operation part 38 and the second operation part 46. In the following rotation state, the first mirror ring 26 is relatively fixed to the second mirror ring 30 in one direction, and the second mirror ring 30 can rotate relative to the first mirror ring 26 in this direction. That is, in the same direction, the cooperation of the first operation part 38 and the second operation part 46 can limit one of the first mirror ring 26 and the second mirror ring 30, and has no limiting effect on the other one, so that the first mirror ring 26 and the second mirror ring 30 can not only form a synchronous rotation effect, but also form a relative rotation effect, which is convenient for users to use.

[0072] The specific cooperation mode of the first operating part 38 and the second operating part 46 is not limited, as long as it can limit one of the first lens ring 26 and the second lens ring 30 in the same direction and not limit the other. For example, the first operating part 38 and the second operating part 46 are respectively bumps. When the two bumps abut against each other, one of the bumps can be limited in the same direction, and the other bump is not limited. Or, one of the first operating part 38 and the second operating part 46 is a slider, and the other is a chute. When the slider slides in the chute in one direction and moves to one end of the chute, the slider cannot move relative to the chute in this direction, so as to limit the lens ring provided with the slider, and no limiting effect is formed on the lens ring provided with the chute.

[0073] In this embodiment, the first operating part 38 is fixedly arranged on the outer side of the first lens ring 26, and the second operating part 46 is fixedly arranged on the outer side of the second lens ring 30. The first operating part 38 and the second operating part 46 are arranged along the circumferential direction of the first lens ring 26. In the following-rotation state, the first operating part 38 and the second operating part 46 abut against each other. That is, when the first operating part 38 and the second operating part 46 abut against each other, the first lens ring 26 and the second lens ring 30 are in a following-rotation state. By arranging the first operating part 38 and the second operating part 46 on the outer sides of the first lens ring 26 and the second lens ring 30, the first operating part 38 and the second operating part 46 can not only be used to form a following-rotation state to make the first lens ring 26 and the second lens ring 30 rotate synchronously, but also be used to contact with the user's finger to facilitate the user to rotate the first lens ring 26 and the second lens ring 30, which is convenient for the user to use.

[0074] In summary, during the use of the filter mechanism 10, the filter mechanism 10 can be first installed on the action camera by using the connection port 18 on the connection ring 12, so that the first filter 28 and the second filter 32 of the filter mechanism 10 correspond to the lens of the action camera. Then, according to the need, the first lens ring 26 or the second lens ring 30 can be rotated to adjust the position of the first filter 28 or the second filter 32. When the user needs to adjust the polarization function, the first lens ring 26 and the second lens ring 30 can be first rotated relative to each other until the first operating part 38 and the second operating part 46 abut against each other. Then, the user can press the first operating part 38 with a finger to make the first operating part 38 move towards the direction of the second operating part 46, and finally make the first lens ring 26 and the second lens ring 30 rotate together. When the user needs to adjust the neutral density function, the user can press the first operating part 38 with a finger to keep the first lens ring 26 relatively fixed with respect to the connection ring 12, and then press the second operating part 46 with another finger to drive the second lens ring 30 to rotate relative to the first lens ring 26, so as to prevent the first lens ring 26 from rotating along with the second lens ring 30 during the rotation of the second lens ring 30.

[0075] The above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A filter mechanism, characterized in that, It includes a connecting ring, a first filter component, and a second filter component. The first filter component includes a first lens ring and a first filter fixedly installed on the first lens ring. The second filter component includes a second lens ring and a second filter fixedly installed on the second lens ring. The first lens ring, the second lens ring, and the connecting ring are coaxially arranged, and the first lens ring is rotatably connected to the second lens ring and the connecting ring respectively. The first filter and the second filter are arranged opposite to each other with a gap.

2. The filter mechanism according to claim 1, wherein A first operation part is convexly provided on the outer side of the first lens ring, and the first operation part is fixedly relative to the first lens ring.

3. The filter mechanism according to claim 2, wherein, A second operation part is convexly provided on the outer side of the second lens ring, and the second operation part is fixedly relative to the second lens ring.

4. The filter mechanism according to claim 3, characterized in that, When the first operation part and the second operation part are in circumferential contact with each other, the first lens ring and the second lens ring can be rotated synchronously through the first operation part and the second operation part.

5. The filter mechanism according to claim 3, wherein The first operation part and the second operation part are arranged along the circumference of the first lens ring. The first operation part is spaced from the second lens ring, and the second operation part is spaced from the first lens ring.

6. The filter mechanism according to claim 3, characterized in that Convex-concave structures for increasing friction are provided on the outer sides of the first operation part and the second operation part.

7. The filter mechanism according to claim 3, characterized in that, The second lens ring includes a main body part and an edge part surrounding the outer periphery of the main body part. At least part of the main body part is located radially inside the first lens ring and is rotatably connected to the first lens ring. The edge part is located axially outside the first lens ring, and the second operation part is connected to the edge part.

8. The filter mechanism according to claim 7, wherein The first operation part includes a first operation main body and an extension part. The first operation main body is fixedly connected to the first lens ring and extends along the circumference of the first lens ring. The first operation main body is located radially outside the first lens ring and the edge part. The extension part is connected to the radially inner side of the first operation main body, and the edge part is located between the first lens ring and the extension part.

9. The filter mechanism according to claim 7, wherein The second operation part includes a second operation main body and a connecting part connected to the second operation main body. The second operation main body is located radially outside the edge part and the first lens ring. The connecting part is located axially outside the edge part and is fixedly connected to the edge part; or The first operation part is fixed axially outside the edge part.

10. The filter mechanism according to claim 7, characterized in that, One of the second operation part and the edge part is provided with a protruding part, and the other is correspondingly provided with a recessed part. The protruding part is inserted into the recessed part so that the second operation part and the edge part are relatively fixed in the circumferential direction.

11. The filter mechanism according to claim 10, wherein, The recessed part is provided on the edge part and penetrates the edge part along the radial direction of the second lens ring.

12. The filter mechanism according to claim 3, characterized in that, [[ID= ​ 13. The filter mechanism according to claim 1, wherein, ​ 14. A filter mechanism, characterized in that, It includes a connecting ring, a first filter component and a second filter component. The first filter component includes a first lens ring and a first filter fixedly installed on the first lens ring. The second filter component includes a second lens ring and a second filter fixedly installed on the second lens ring. The first lens ring, the second lens ring and the connecting ring are coaxially arranged, and the first lens ring is rotatably connected to the second lens ring and the connecting ring respectively. The first filter and the second filter are arranged opposite to each other at intervals. A first operating part is provided on the first lens ring, and a second operating part is provided on the second lens ring. The first lens ring and the second lens ring can form a following rotation state through the cooperation of the first operating part and the second operating part. In the following rotation state, the first lens ring is relatively fixed to the second lens ring in one direction, and the second lens ring can rotate relative to the first lens ring in this direction.

15. The filter mechanism according to claim 14, wherein The first operating part is fixedly installed on the outer side of the first lens ring, and the second operating part is fixedly installed on the outer side of the second lens ring. The first operating part and the second operating part are arranged along the circumferential direction of the first lens ring. In the following rotation state, the first operating part abuts against the second operating part.

Images