Filter assembly

Abstract

A filter assembly includes a frame with a lens mounting space for mounting filter lenses. The frame includes a first adjustment track and a second adjustment track extending circumferentially along the lens mounting space, spaced apart, with the length of the first adjustment track being less than the length of the second adjustment track. A filter connecting frame is movably connected to the frame and has an adjustment protrusion facing the frame. The adjustment protrusion can rotate relative to the first or second adjustment track to adjust the filtering effect of the filter lenses. Because the frame of the filter assembly has adjustment tracks, when assembled with the filter connecting frame, the adjustment tracks can cooperate with the adjustment protrusion of the connecting frame to guide and limit the relative rotation between the frame and the connecting frame. This allows for adjustment of the superimposed effect of the corresponding filters through rotation, enriching the shooting experience.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and specifically to a filter assembly. Background Technology

[0002] To achieve a variety of shooting effects, camera filters are often mounted on cameras in related technologies. A camera filter is an additional lens installed in front of the camera lens to meet the various needs of photographers. Depending on the requirements, photographers may need to use two or more filters in combination to add filter effects to the shot. However, the user experience of filters in related technologies is relatively limited and cannot meet the shooting needs of photographers in different scenarios. Utility Model Content

[0003] The main technical problem this invention addresses is that camera filters in related technologies offer a limited user experience and fail to meet the needs of shooting in various scenarios.

[0004] To address the aforementioned technical problems, this application provides a filter assembly, including:

[0005] The eyeglass frame has a lens mounting space for mounting filter lenses; the eyeglass frame includes a first adjustment track and a second adjustment track extending circumferentially along the lens mounting space, the first adjustment track and the second adjustment track are spaced apart, and the length of the first adjustment track is less than the length of the second adjustment track;

[0006] A filter connecting bracket is movably connected to the eyeglass frame, and the filter connecting bracket is provided with an adjusting protrusion facing the eyeglass frame; the adjusting protrusion can rotate relative to the first adjusting track or the second adjusting track to adjust the filtering effect of the filter lens.

[0007] In one embodiment, the frame has a flange at one end near the filter connector. The flange includes a body portion extending circumferentially and at least two limiting portions. One end of the limiting portion is fixed to the body portion, and the other end extends radially near the lens mounting space of the frame. The limiting portion divides the body portion into a first arc segment and a second arc segment along the circumferential direction. The first adjustment track and the second adjustment track are formed in the first arc segment and the second arc segment, respectively.

[0008] In one embodiment, at least one of the limiting portions is formed with a fixing clip having an opening facing the lens mounting space, and the shape and size of the fixing clip are matched with the adjusting protrusion.

[0009] In one embodiment, the arc angle of the first adjustment track is between 50° and 80°, and the arc angle of the second adjustment track is between 180° and 240°.

[0010] In one embodiment, the arc angle range of the first adjustment track is 72.5°.

[0011] In one embodiment, the end of the eyeglass frame facing the filter connecting frame is further provided with a receiving groove, the receiving groove being formed along the circumferential direction inside the first adjustment track and the second adjustment track, and the opening of the receiving groove facing the filter connecting frame; the end of the filter connecting frame facing the eyeglass frame is provided with a limiting protrusion, the limiting protrusion cooperating with the receiving groove.

[0012] In one embodiment, the frame further includes a circumferentially extending mounting track formed on the inner sidewall of the receiving groove, and the mounting track has an opening toward the lens mounting space of the frame; the filter connector further includes at least two snap-fit ​​structures, which are in elastic contact with the filter connector via an elastic member, the elastic member providing the snap-fit ​​structures with an elastic restoring force radially away from the lens mounting space of the frame;

[0013] The buckle structure includes an operating part and a hook part. The hook part is fixedly disposed at one end of the operating part facing the frame, and the hook part extends radially away from the lens mounting space to cooperate with the mounting track.

[0014] In one embodiment, the adjusting protrusion is disposed on at least one of the snap-fit ​​structures.

[0015] In one embodiment, the frame further includes an elastic washer disposed between the mounting track wall and the hook, the elastic washer extending circumferentially.

[0016] In one embodiment, at least two of the buckle structures are arranged at equal intervals along the circumference of the frame.

[0017] According to the filter assembly of the above embodiment, since the filter assembly has an adjustment track in its frame, when it is spliced ​​and assembled with the filter connecting frame, it can cooperate with the adjustment protrusion of the filter connecting frame. Based on the adjustment track, the relative rotation between the frame and the filter connecting frame is guided and limited, so that the superposition effect of the corresponding filter can be adjusted by rotation, thus enriching the shooting experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the filter assembly structure in an embodiment of this application.

[0019] Figure 2This is a schematic diagram of the eyeglass frame structure in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the filter connecting bracket structure in an embodiment of this application.

[0021] Figure 4 This is a cross-sectional view of the filter connector in an embodiment of this application.

[0022] Figure 5 for Figure 3 Enlarged view of part A of the middle filter connector.

[0023] Figure 6 This is a cross-sectional view of another filter connector in an embodiment of this application.

[0024] Figure 7 for Figure 5 Enlarged view of part B of the middle filter connector.

[0025] Figure 8 This is an exploded schematic diagram of the filter connector in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 101-Frame; 102-Filter connector; 121-Flange; 1211-Body part; 1212-Limiting part; 123-Fixing clamp; 124-Assembly rail; 13-Receiving groove; 14-Limiting protrusion; 14-First adjustment rail; 15-Second adjustment rail; 1011-Lens mounting space; 103-Magnet; 104-Snap-on structure; 1041-Operating part; 1042-Hook; 106-Elastic washer;

[0028] 2- Adjusting bump;

[0029] 31-First filter assembly; 32-Second filter assembly. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0031] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0033] To achieve specific shooting effects, photographers attach various types of camera filters to their camera lenses. These include PL and CPL filters to eliminate reflected light, UV filters to block ultraviolet rays, ND filters to reduce light intake and slow down shutter speeds, GND filters to balance brightness by regionally reducing light intake, and star filters to create a radiant effect. In practice, photographers may need to use two or more filters to achieve specific results. However, the current technology for using camera filters is limited and cannot fully meet the needs of photographers.

[0034] To address the limitation of single-method application of camera filters in related technologies, this application provides a filter component. Please refer to... Figures 1 to 3 The filter assembly includes:

[0035] The frame 101 and the filter connecting bracket 102 are provided. The frame 101 is provided with a lens mounting space 1011 for mounting filter lenses. The frame 101 includes a first adjustment track 14 and a second adjustment track 15 extending circumferentially along the lens mounting space 1011. The first adjustment track 14 and the second adjustment track 15 are spaced apart, and the length of the first adjustment track 14 is less than the length of the second adjustment track 15.

[0036] The filter connecting bracket 102 is movably connected to the lens frame 101, and the filter connecting bracket 102 is provided with an adjusting protrusion 2, which is set towards the lens frame 101; the adjusting protrusion 2 can rotate relative to the first adjusting track 14 or the second adjusting track 15 to adjust the filtering effect of the filter lens.

[0037] The lens frame 101 in this embodiment is used to mount filter lenses, and the lens frame 101 with the filter lenses can also be directly or indirectly mounted to a camera lens. To mount the filter lenses, the lens frame 101 in this embodiment has a hollow lens mounting space 1011, wherein the lens mounting space 1011 of the lens frame 101 is used to place the filter lenses. The lens frame 101 has a mounting position for mounting the filter lenses inside the lens mounting space 1011. The filter lenses can be fixedly connected to the mounting position and placed in the lens mounting space 1011. For example, a mounting groove matching the filter lenses can be provided inside the lens frame 101, or threaded fasteners, buckles, etc., can be used to fix the filter lenses. In addition, for ease of assembly, the frame 101 in this embodiment can be formed by splicing multiple parts. For example, based on the mounting slot of the filter lens, the frame 101 can be split into two or more parts along the axial direction, the multiple parts can be connected along the axial direction, and then the filter lens can be clamped between the multiple parts, thereby realizing the fixed connection between the filter lens and the frame 101.

[0038] In order to achieve the stacking arrangement between the eyeglass frame 101 and the filter connecting frame 102, and to enable the filter assembly to adjust the filter effect by rotating it, in this embodiment of the application, the eyeglass frame 101 is provided with at least two circumferentially extending adjustment tracks, namely a first adjustment track 14 and a second adjustment track 15. The two adjustment tracks are spaced apart, which means that the first adjustment track 14 and the second adjustment track 15 are separated from each other. When the eyeglass frame 101 rotates along one of the adjustment tracks between the eyeglass frame 101 and the filter connecting frame 102, it will not cross the first adjustment track 14 and enter the second adjustment track 15, nor will it cross the second adjustment track 15 and enter the first adjustment track 14. The difference between the first adjustment track 14 and the second adjustment track 15 is that the first adjustment track 14 is shorter. Therefore, if the adjustment is made by rotating along the first adjustment track 14, the range of relative rotation angle between the lens frame 101 and the filter connecting frame 102 is smaller, which means the adjustment range of the filter is smaller. It is more suitable for adjusting polarizing filters, such as PL (Polarizer) filters and CPL (Circular Polarizer) filters, to form a multi-level light reduction effect. Based on the characteristics of CPL and PL filters, two CPL filters need to be stacked together while distinguishing their front and back sides in order to achieve the VND effect of adjustable light intake by rotating them. Therefore, this places requirements on the filter lenses mounted on the frame 101 and the filter connecting frame 102. When two PL lenses are stacked together, it may affect the focusing effect of the camera device during shooting. Therefore, in this embodiment, when a set of frame 101 and filter connecting frame 102 are stacked, one CPL filter and one PL filter can be stacked together, so as to achieve the purpose of adjustable light intake while taking into account both assembly convenience and focusing effect.

[0039] Specifically, the filter connecting bracket 102 may include the lens frame 101 in the embodiments of this application, or it may include a connecting ring base for connecting the lens frame 101 to the camera device.

[0040] The second adjustment track 15 is longer, so if the rotation adjustment is made according to the second adjustment track 15, the relative rotation angle between the filter components is larger, and the adjustment range of the filter is larger. It is suitable for adjusting single polarizing lenses (such as PL filters or CPL filters) and other effect lenses, such as star filters, brushed filters, color filters, etc.

[0041] To allow the filter connecting bracket 102 to rotate in conjunction with the adjustment track when the frame 101 and the filter connecting bracket 102 are movably connected, including rotation based on and limited to the path provided by the adjustment track, the filter connecting bracket 102 is also provided with an adjustment protrusion 2. The adjustment protrusion 2 is positioned towards the frame 101 and protrudes along the axial direction of the filter connecting bracket 102, which is equivalent to protruding towards the frame 101. The position of the adjustment protrusion 2 matches the circumference of the first adjustment track 14 or the second adjustment track 15. When the position of the adjustment protrusion 2 matches the circumference of the first adjustment track 14, the adjustment protrusion 2 can be placed within the first adjustment track 14 and move along the first adjustment track 14. When the position of the adjustment protrusion 2 matches the circumference of the second adjustment track 15, the adjustment protrusion 2 can be placed within the second adjustment track 15 and move along the second adjustment track 15. In other words, the range of motion of the adjustment protrusion 2 depends on the track it is on. Therefore, in this embodiment of the application, by adjusting the connection between the protrusion 2 and the first adjustment track 14 or the second adjustment track 15, the relative rotation between the lens frame 101 and the filter connecting frame 102 can be achieved, which can correspond to different filter adjustment effects, including but not limited to polarization reduction, ultraviolet removal, star display, etc., enriching the shooting experience of photographers.

[0042] In this embodiment, the adjustment protrusion 2 can be directly set on the filter connecting frame 102, or the adjustment protrusion 2 can be set independently of the filter connecting frame 102, which is equivalent to the adjustment protrusion 2 being movably connected to the filter connecting frame 102.

[0043] In this embodiment, the eyeglass frame 101 can be provided with a first adjustment track 14 and a second adjustment track 15 at one end and an adjustment protrusion 2 at the other end. That is, an eyeglass frame 101 has both an adjustment track and a corresponding adjustment protrusion 2. Under this structure, eyeglass frames 101 of the same type can be stacked on top of each other, and the rotation angle can be adjusted based on the filter lens provided on each eyeglass frame 101.

[0044] In some alternative embodiments, to allow the adjusting protrusion 2 to selectively match the first adjusting track 14 or the second adjusting track 15, the first adjusting track 14 and the second adjusting track 15 can extend along the same circumference and be isolated from each other. In other words, the first adjusting track 14 and the second adjusting track 15 can be formed by splitting tracks on the same circumference, so that the adjusting protrusion 2 can selectively move within the first adjusting track 14 or the second adjusting track 15 to adapt to different types of filters, which is equivalent to increasing the types of filters that can be fitted to the frame 101 in this embodiment.

[0045] In some alternative embodiments, in order to form the first adjustment track 14 and the second adjustment track 15, a flange 121 is provided at one end of the frame 101 near the filter connecting frame 102. The flange 121 includes a body portion 1211 extending circumferentially and at least two limiting portions 1212. One end of the limiting portion 1212 is fixed to the body portion 1211, and the other end extends radially near the lens mounting space of the frame 101. The limiting portion 1212 divides the body portion 1211 circumferentially into a first arc segment and a second arc segment. The first adjustment track 14 and the second adjustment track 15 are formed in the first arc segment and the second arc segment, respectively. By providing a flange 121 in the outer edge region that is higher than the end of the frame 101, wherein the flange includes a body portion 1211 and a limiting portion 1212, a circumferential track for the movement of the adjusting protrusion 2 can be formed inside the body portion 1211; the flange 121 also has at least two limiting portions 1212, which divide the entire circumferential track inside the body portion 1211 into two separate arc segments and a second arc segment, wherein each arc segment is equivalent to an adjusting track, and therefore the first arc segment and the second arc segment correspond to the first adjusting track 14 and the second adjusting track 15, respectively, wherein the arc length corresponding to the first adjusting track 14 is smaller, and the arc length corresponding to the second adjusting track 15 is larger. In this structure, the adjusting protrusion 2 on the filter connector 102 can be selectively positioned on the first adjusting track 14 or the second adjusting track 15, and can slide under the restriction of the two limiting portions 1212. When the limiting part 1212 is set to three or more, more adjustment tracks can be formed on the first side 12, instead of being limited to only the first adjustment track 14 and the second adjustment track 15.

[0046] In the application of filter assemblies, when the frame 101 and the filter connecting bracket 102 are stacked, it is generally necessary to keep one filter lens fixed while allowing the other filter lens to rotate relative to it, so that the relative angle between the two filter lenses changes, thereby achieving effect adjustment; or, the frame 101 and the filter connecting bracket 102 can be kept in a relatively fixed position. To achieve this, in some optional embodiments, at least one limiting part 1212 is formed with a fixing clip 123, which has an opening facing the lens mounting space, and the shape and size of the fixing clip 123 matches the adjusting protrusion 2. By setting the fixing clip 123, adjacent filter lenses can be relatively fixed, thereby locking the relative position between the frame 101 and the filter connecting bracket 102.

[0047] In some optional embodiments, in order to ensure the specific filter adjustment effect, the arc angle range of the first adjustment track 14 is between 50° and 80°, for example, it can be 50°, 55°, 60°, 65°, 70°, 72.5°, 75°, 80°, etc., and the arc angle range of the second adjustment track 15 is between 180° and 240°, for example, it can be 185°, 190°, 195°, 200°, 210°, 220°, 230°, 240°, etc.

[0048] In some optional embodiments, a CPL filter and a PL filter are stacked, with the PL filter in front and closer to the target, and the CPL filter behind and closer to the camera. After fixing the CPL filter, the PL filter can be adjusted on the first adjustment track. The rotation of the PL filter and the CPL filter changes the light transmittance. The most ideal filter effect can be obtained within a range of 72.5°. Users can choose the appropriate rotation angle according to their own shooting needs.

[0049] In some optional embodiments, to improve the strength of the movable connection between the frame 101 and the filter connecting frame 102, and to ensure smooth and reliable rotation between the frame 101 and the filter connecting frame 102, a receiving groove 13 is provided at one end of the frame 101 facing the filter connecting frame 102. The receiving groove 13 is formed circumferentially inside the first adjusting track 14 and the second adjusting track 15, and the opening of the receiving groove 13 faces the filter connecting frame 102. A limiting protrusion 14 is provided at one end of the filter connecting frame 102 facing the frame 101, and the limiting protrusion 14 is connected to the receiving groove 13. The receiving groove 13 is equivalent to forming a recessed structure at the corresponding end of the frame 101, while the limiting protrusion 14 is forming a stepped structure at the corresponding end of the filter connecting frame 102. The stepped structure matches and connects with the recessed structure. Moreover, the shape of the receiving groove 13 and the shape of the protruding structure are both circular, which allows the frame 101 and the filter connecting frame 102 to further rotate relative to each other while still connected.

[0050] In some alternative embodiments, please refer to Figures 4-7 To further improve the connection reliability between the frame 101 and the filter connecting bracket 102, the frame may also have a circumferentially extending mounting track 124, wherein the mounting track 124 is formed in the inner sidewall of the receiving groove 13, and the mounting track 124 has an opening toward the lens mounting space 1011 of the frame 101.

[0051] The filter connector 102 also includes at least two snap-fit ​​structures 104. The snap-fit ​​structures 104 and the filter connector 102 are in elastic contact through an elastic member. The elastic member provides the snap-fit ​​structures 104 with an elastic restoring force along the radial direction away from the lens mounting space 1011 of the frame 101. The snap-fit ​​structure 104 includes an operating part 1041 and a hook part 1042. The hook part 1042 is fixedly disposed at one end of the operating part 1041 facing the frame 101, and the hook part 1042 extends radially away from the lens mounting space 1011 to cooperate with the mounting track 124. By providing an assembly track 124 on the inner wall of the receiving groove 13, and a snap-fit ​​structure 104 with elastic contact on the filter connecting frame 102, and a hook 1042 on the snap-fit ​​structure 104, the position of the hook 1042 can be adjusted through the elastic contact between the snap-fit ​​structure 104 and the filter connecting frame 102, so that the limiting protrusion 14 can be placed into the receiving groove 13. Then, because the snap-fit ​​structure 104 has an elastic restoring force away from the lens mounting space 1011, the snap-fit ​​structure 104 can drive the hook 1042, so that the hook 1042 extends toward the assembly track 124. The hook 1042 and the assembly track 124 cooperate to restrict the separation of the lens frame 101 and the filter connecting frame 102 in the assembly direction, thereby achieving relative fixation of the position between the lens frame 101 and the filter connecting frame 102, and thus improving the connection reliability between the lens frame 101 and the filter connecting frame 102.

[0052] In some optional embodiments, to facilitate adjustment of the position of the adjusting protrusion 2, the adjusting protrusion 2 is disposed on at least one snap-fit ​​structure 104. In this embodiment, by disposing the adjusting protrusion 2 on the snap-fit ​​structure 104 that elastically contacts the frame 101, the position of the adjusting protrusion 2 can be changed accordingly by adjusting the position of the snap-fit ​​structure 104. This allows the adjusting protrusion 2 to switch positions in the first adjusting track 14 or the second adjusting track 15, or the adjusting protrusion 2 can be moved to the fixing clamp 123 to fix the position between the frame 101 and the filter connecting bracket 102, or the adjusting protrusion 2 can be removed. In the elastic contact between the buckle structure 104 and the frame 101, the elastic contact causes the buckle structure 104 to tend to move radially away from the lens mounting space of the frame 101. This means that the buckle structure 104 will move away from the lens mounting space of the frame 101 in its natural state, and the adjusting protrusion 2 will also tend to move away from the frame 101. In this state, the adjusting protrusion 2 will abut against the edge of the adjusting track, so that the frame 101 and the filter connecting bracket 102 are tightly connected.

[0053] The operating part 1041 of the snap-fit ​​structure 104 is used by the operator to press the snap-fit ​​structure 104 based on the elastic contact between the snap-fit ​​structure 104 and the frame 101, so as to adjust the relative position between the snap-fit ​​structure 104 and the frame 101. In this way, the components provided on the snap-fit ​​structure 104, including the adjusting protrusion 2 and the hook 1042, can be adjusted, which can facilitate the assembly operation between adjacent filter components.

[0054] Additionally, please refer to Figure 7 and Figure 8 As shown, the filter assembly in this embodiment can also have a built-in magnet 103 to strengthen the connection between the filter assemblies and provide damping for the relative rotation between the filter assemblies, thereby achieving stepless adjustment and fixation of the angle between the filter assemblies.

[0055] In some alternative embodiments, to further improve assembly reliability, both individual components can be protected, and damping can be provided for rotation between filter assemblies. Please refer to [reference needed]. Figures 5 to 7 As shown, the frame 101 also includes an elastic washer 106, which is disposed between the wall of the mounting track 124 and the hook 1042, and extends circumferentially. By providing the elastic washer 106 in the mounting track 124, soft contact can be achieved between the hook 1042 and the mounting track 124, thereby preventing wear on the hook 1042 and the mounting track 124. The soft contact also provides rotational damping for the rotation between the frame 101 and the filter connecting bracket 1102, slowing down the rotation speed.

[0056] In some alternative embodiments, to maintain assembly balance between the frame 101 and the filter connector 102, at least two snap-fit ​​structures 104 can be arranged at equal intervals along the circumference of the frame 101. Specifically, the snap-fit ​​structures 104 can be arranged symmetrically, with two snap-fit ​​structures 104 arranged radially opposite each other, and three or more snap-fit ​​structures 104 arranged at equal intervals along the circumference of the frame 101. This means that every two adjacent snap-fit ​​structures 104 are equally spaced. When there are three snap-fit ​​structures 104, the line connecting adjacent snap-fit ​​structures 104 to the center of the frame 101 forms a 120-degree angle; when there are four snap-fit ​​structures 104, the line connecting adjacent snap-fit ​​structures 104 to the center of the frame 101 forms a 90-degree angle, and so on. Five snap-fit ​​structures 104 form a 72-degree angle between adjacent snap-fit ​​structures 104, and so on. For ease of operation, there are two buckle structures 104. This allows users to operate the buckle structure 104 by pinching it with two fingers, in conjunction with the elastic contact between the buckle structure 104 and the frame 101, including removing stacked frames or switching adjustment tracks, etc.

[0057] Furthermore, the filter connector 102 in this embodiment may specifically include a mounting ring base, wherein the end of the mounting ring base away from the lens frame may be provided with an assembly interface for connecting to the camera device, so that the mounting ring base and the lens frame can be connected to the camera device, thereby enabling the adjustment of the filter effect of the camera device.

[0058] Alternatively, the filter connecting frame 102 in this embodiment may include the aforementioned frame 101, meaning the filter assembly in this embodiment may be formed by splicing two identical frames 101 together. Specifically, the filter assembly in this embodiment may include at least two stacked frames 101, each frame 101 having a lens mounting space 1011 for mounting filter lenses. One end of the frame 101 is provided with a circumferentially extending first adjustment track 14 and second adjustment track 15, which are spaced apart, and the length of the first adjustment track 14 is less than the length of the second adjustment track 15. The other end is provided with an adjustment protrusion 2, which can rotate relative to the first adjustment track 14 or the second adjustment track 15 on adjacent frames 101 to adjust the filtering effect of the filter lenses.

[0059] According to the filter assembly of the above embodiment, since the filter assembly has an adjustment track in its frame 101, when it is spliced ​​and assembled with the filter connecting frame 102, it can cooperate with the adjustment protrusion of the filter connecting frame 102. Based on the adjustment track, the relative rotation between the frame 101 and the filter connecting frame 102 is guided and limited, so that the superposition effect of the corresponding filter can be adjusted by rotation, thus enriching the shooting experience.

[0060] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A filter assembly, characterized in that, include: The eyeglass frame has a lens mounting space for mounting filter lenses; the eyeglass frame includes a first adjustment track and a second adjustment track extending circumferentially along the lens mounting space, the first adjustment track and the second adjustment track are spaced apart, and the length of the first adjustment track is less than the length of the second adjustment track; A filter connecting bracket is movably connected to the eyeglass frame, and the filter connecting bracket is provided with an adjusting protrusion facing the eyeglass frame; the adjusting protrusion can rotate relative to the first adjusting track or the second adjusting track to adjust the filtering effect of the filter lens.

2. The filter assembly as claimed in claim 1, characterized in that, The frame has a flange at one end near the filter connector. The flange includes a body portion extending circumferentially and at least two limiting portions. One end of the limiting portion is fixed to the body portion, and the other end extends radially near the lens mounting space of the frame. The limiting portion divides the body portion into a first arc segment and a second arc segment along the circumferential direction. The first adjustment track and the second adjustment track are formed in the first arc segment and the second arc segment, respectively.

3. The filter assembly as described in claim 2, characterized in that, At least one of the limiting portions has a fixing clip formed thereon, the fixing clip having an opening toward the lens mounting space, and the shape and size of the fixing clip matching the adjusting protrusion.

4. The filter assembly as claimed in claim 1, characterized in that, The arc angle of the first adjustment track is between 50° and 80°, and the arc angle of the second adjustment track is between 180° and 240°.

5. The filter assembly as described in claim 4, characterized in that, The arc angle range of the first adjustment track is 72.5°.

6. The filter assembly as described in any one of claims 1-5, characterized in that, The end of the eyeglass frame facing the filter connecting frame is also provided with a receiving groove, which is formed along the circumferential direction inside the first adjustment track and the second adjustment track, and the opening of the receiving groove faces the filter connecting frame; the end of the filter connecting frame facing the eyeglass frame is provided with a limiting protrusion, which is connected to the receiving groove.

7. The filter assembly as claimed in claim 6, characterized in that, The frame also has a circumferentially extending mounting track formed on the inner sidewall of the receiving groove, and the mounting track has an opening toward the lens mounting space of the frame; the filter connecting frame further includes at least two snap-fit ​​structures, which are in elastic contact with the filter connecting frame through an elastic element, the elastic element providing the snap-fit ​​structures with an elastic restoring force radially away from the lens mounting space of the frame; The buckle structure includes an operating part and a hook part. The hook part is fixedly disposed at one end of the operating part facing the frame, and the hook part extends radially away from the lens mounting space to cooperate with the mounting track.

8. The filter assembly as claimed in claim 7, characterized in that, The adjusting protrusion is disposed on at least one of the buckle structures.

9. The filter assembly as claimed in claim 7, characterized in that, The frame also includes an elastic washer disposed between the mounting track wall and the hook, and the elastic washer extends circumferentially.

10. The filter assembly as claimed in claim 7, characterized in that, At least two of the aforementioned snap-fit ​​structures are arranged at equal intervals along the circumference of the frame.

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