Expansion support, filter assembly and camera shooting auxiliary system

Abstract

The utility model discloses an expansion support, a filter assembly and a camera shooting auxiliary system, the expansion support comprises a first support body, the first support body is used for being detachably connected with a camera shooting device, and the first support body is provided with a first light transmission part for light transmission; the second frame body is used for detachably installing a camera shooting auxiliary device, the second frame body is arranged at one axial end of the first frame body, and a second light-transmitting part which is opposite to the first light-transmitting part and is used for light transmission is formed on the second frame body; the connecting component is connected with the first frame body and the second frame body so as to lock the second frame body to the first frame body, and the connecting component is connected with one of the first frame body and the second frame body in the mode that the connecting position can be adjusted. According to the expansion support, structural modularization is achieved, a user can disassemble or install the expansion support according to use requirements, assembly is convenient, the installation position of each module can be flexibly adjusted, the position of a camera shooting auxiliary device relative to a camera shooting device can be flexibly adjusted, adjustment is convenient, and compatibility and adaptability are high.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic equipment, and in particular to an expansion bracket, a filter assembly and a camera auxiliary system. Background Art

[0002] In some shooting scenes, people usually install auxiliary photography equipment in front of the lens of the photographic equipment to assist the shooting through the auxiliary photography equipment to achieve the purpose of improving the shooting effect, etc.

[0003] In order to change or improve the image effect, photographers usually set filters in front of the lens of a camera or camcorder. The filters are installed in front of the lens through an expansion bracket. The filters are mainly used to intercept ultraviolet rays, protect the lens, and adjust the photographic effect.

[0004] In the prior art, the expansion bracket is an integrated design and cannot be detached and installed separately. It lacks flexibility in use and needs to adapt to different lens positions by adjusting the position of the photographic equipment, resulting in poor compatibility and inconvenience in adjustment, resulting in a poor user experience. Utility Model Content

[0005] The main purpose of the utility model is to provide an expansion bracket, a filter assembly and a camera auxiliary system, aiming to solve the problem that the existing expansion bracket cannot be disassembled and installed separately and is inconvenient to adjust.

[0006] To achieve the above-mentioned purpose, the utility model provides an expansion bracket, which is used to detachably install the camera auxiliary device in front of the camera lens of the camera device, and the expansion bracket includes:

[0007] A first frame, the first frame is used for detachably connecting with the camera device, and the first frame is formed with a first light-transmitting portion for light to pass through;

[0008] a second frame, the second frame being used for detachably mounting the auxiliary camera device, and the second frame being arranged at one axial end of the first frame, and the second frame being formed with a second light-transmitting portion which is directly opposite to the first light-transmitting portion and is used for light to pass through;

[0009] A connecting member is provided, wherein the connecting member is respectively connected to the first frame and the second frame to lock the second frame to the first frame, and the connecting member is connected to one of the first frame and the second frame in a manner in which the connection position can be adjusted.

[0010] In some embodiments, one of the first frame and the second frame is provided with a slide groove, and the other is provided with a slider that slidably cooperates with the slide groove;

[0011] The connecting member passes through the sliding groove and locks the second frame to the first frame.

[0012] In some embodiments, the first frame is provided with the slide groove, and the second frame is provided with a through hole facing the slide groove;

[0013] The connecting member includes a first fastener and a limit block, the first fastener includes a screw and a nut, the screw is sequentially penetrated by the through hole and the slide groove, the nut is located on a side of the second frame away from the first frame, and the nut is connected to one end of the screw;

[0014] The limiting block is located at a side of the first frame body away from the second frame body, and the limiting block is threadedly connected to an end of the screw rod away from the nut.

[0015] In some embodiments, the slide grooves are provided with two, the two slide grooves are respectively arranged on the first frame at intervals and opposite to each other, the sliders are correspondingly provided with two, each of the sliders is slidably matched with one of the slide grooves, and the limit block is arranged adjacent to one of the sliders; and / or,

[0016] The outer periphery of the nut is provided with an anti-slip portion; and / or,

[0017] A limiting groove is arranged on a side of the first frame body facing away from the second frame body. The limiting groove is communicated with the sliding groove. The sliding block and the limiting block are respectively located in the limiting groove.

[0018] In some embodiments, the first light-transmissive portion is a first through hole penetrating through the first frame, and the second light-transmissive portion is a second through hole penetrating through the second frame and directly opposite to the first through hole.

[0019] In some embodiments, the second frame is provided with a magnetic attraction member on the periphery of the second through hole for magnetically engaging with the camera auxiliary device;

[0020] Alternatively, the second through hole is at least partially provided with an internal thread for cooperating with the thread of the outer wall of the camera auxiliary device.

[0021] The utility model also provides a filter assembly, comprising a filter and the aforementioned expansion bracket, wherein the filter is the camera auxiliary device.

[0022] The utility model also provides a camera assist system, which is used to be detachably mounted on a mobile terminal having a camera device, and the camera assist system includes:

[0023] A connecting bracket, the connecting bracket being provided with a connecting structure for detachably connecting to the mobile terminal and at least two connecting holes arranged at intervals;

[0024] and the expansion bracket as described above or the filter assembly as described above;

[0025] At least two second fasteners, each of which is disposed through and connected to one of the connection holes.

[0026] In some embodiments, the connection structure is a cavity for being sleeved outside the mobile terminal.

[0027] In some embodiments, a hook and a hook groove for the hook to be hooked are provided between the expansion bracket and the connection bracket.

[0028] The technical solution of the utility model has the beneficial effects:

[0029] The expansion bracket of the utility model connects the first frame and the second frame respectively by setting a connecting component, and locks the second frame to the first frame, so that the expansion bracket of the utility model realizes structural modularization, and the user can disassemble or install it according to the use requirements, and the assembly is convenient. The installation position of each module can be flexibly adjusted, and the connecting component is connected to one of the first frame and the second frame in a manner that the connection position can be adjusted, so that the position of the camera auxiliary device relative to the camera device can be adjusted, the adjustment is convenient, and the compatibility and adaptability are strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of an embodiment of the expansion bracket of the utility model;

[0031] Figure 2 This is a structural schematic diagram of another angle of an embodiment of the expansion bracket of the utility model;

[0032] Figure 3 This is a disassembled schematic diagram of a part of the structure of an embodiment of the expansion bracket of the utility model;

[0033] Figure 4 It is a structural schematic diagram of an embodiment of the first frame of the utility model;

[0034] Figure 5 This is a structural schematic diagram of an embodiment of a slider of the utility model;

[0035] Figure 6 It is a structural schematic diagram of an embodiment of the camera auxiliary system of the utility model;

[0036] Figure 7 It is a disassembly diagram of an embodiment of the camera auxiliary system of the utility model.

[0037] Description of Figure Numbers:

[0038]

[0039]

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0044] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] The utility model proposes an expansion bracket 100, which is used to detachably install a camera auxiliary device in front of a camera lens of a camera device. In this embodiment, the camera device is a device with a camera lens, which can be a camera or a mobile phone, etc.; the camera auxiliary device can be a filter or a sunshade, etc., wherein the filter, as one of the commonly used camera auxiliary devices, can be used to intercept ultraviolet rays, protect the lens and improve the photographic effect; the filter can be a UV (ultraviolet) filter, a skylight filter, a polarizing filter, a gray filter (ND), a fogging filter, etc., which can be selected according to the application environment, imaging requirements, etc. to meet people's different needs for shooting; when the camera auxiliary device is a sunshade, it can block the light leakage area to achieve the purpose of anti-glare.

[0046] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the expansion bracket 100 includes:

[0047] The first frame 10 is used for detachably connecting with the camera device, and the first frame 10 is formed with a first light-transmitting portion 11 for light to pass through.

[0048] In this embodiment, the first light-transmitting portion 11 is located in front of the camera lens for light to pass through.

[0049] The second frame 20 is used for detachably installing the camera auxiliary device, and the second frame 20 is arranged at one axial end of the first frame 10. The second frame 20 is formed with a second light-transmitting portion 21 that is opposite to the first light-transmitting portion 11 for light to pass through.

[0050] In this embodiment, the second light-transmitting portion 21 is located in front of the camera lens for light to pass through, and the camera auxiliary device is installed at the second light-transmitting portion 21. When the camera auxiliary device is a filter, it can be used to filter light, such as to eliminate the influence of ultraviolet rays and stray light in natural light on the photosensitivity of the film, and at the same time protect the camera lens.

[0051] Among them, the detachable installation method of the first frame 10 and the camera device, and the second frame 20 and the camera auxiliary device can be a snap connection, a threaded connection, a magnetic connection, etc., which is convenient for quick disassembly and installation and convenient for users.

[0052] The connecting member 30 is connected to the first frame 10 and the second frame 20 respectively to lock the second frame 20 to the first frame 10, so that the expansion bracket 100 of the utility model realizes structural modularization, and the user can disassemble or install according to the use requirements, and the assembly is convenient, and the installation position of each module can be flexibly adjusted. Moreover, the connecting member 30 is connected to one of the first frame 10 and the second frame 20 in a manner in which the connection position can be adjusted, and the position of the camera auxiliary device relative to the camera device can be adjusted, which is convenient to adjust and has strong compatibility and adaptability.

[0053] In some embodiments, one of the first frame 10 and the second frame 20 is provided with a slide groove 12, and the other is provided with a slider 22 that slidably cooperates with the slide groove 12;

[0054] The connecting member 30 passes through the sliding groove 12 and locks the second frame 20 to the first frame 10 .

[0055] In this embodiment, the position between the first frame 10 and the second frame 20 is adjusted by the cooperation of the slider 22 and the slide groove 12, and the adjustment is smooth and labor-saving. After the slider 22 slides along the slide groove 12 so that the position of the second frame 20 reaches the preset range, the connecting member 30 passes through the slide groove 12 and locks the second frame 20 to the first frame 10, thereby realizing the position adjustment between the camera auxiliary device and the camera device, which is convenient and quick to operate and convenient for users to use.

[0056] In some embodiments, please refer to Figure 3 and Figure 4 , the first frame 10 is provided with a slide groove 12, and the second frame 20 is provided with a through hole 23 facing the slide groove 12;

[0057] The connecting member 30 includes a first fastener 31 and a stopper 32. The first fastener 31 includes a screw 311 and a nut 312. The screw 311 is sequentially provided with a through hole 23 and a slide slot 12. The nut 312 is located on a side of the second frame 20 away from the first frame 10, and the nut 312 is connected to one end of the screw 311. In this embodiment, the screw 311 is vertically provided with a through hole 23 and a slide slot 12, and the nut 312 and the stopper 32 are relatively parallel.

[0058] The limit block 32 is located on the side of the first frame 10 away from the second frame 20, and the limit block 32 is threadedly connected to the end of the screw rod 311 away from the nut 312. The top end surface of the limit block 32 abuts against the bottom surface of the first frame 10 and cooperates with the first fastener 31 to lock the second frame 20 on the first frame 10. The connection is stable and not easy to loosen.

[0059] In some embodiments, two slide grooves 12 are provided, and the two slide grooves 12 are respectively arranged on the first frame 10 with an interval and relative to each other. Two sliders 22 are correspondingly provided, and each slider 22 is slidably matched with a slide groove 12, and the limit block 32 is arranged adjacent to one of the sliders 22.

[0060] In this embodiment, the slide groove 12 is extended along the length direction of the first frame 10. Since the two slide grooves 12 are arranged on the first frame 10 at intervals and opposite to each other, the second frame 20 can only slide along the length direction of the first frame 10. Therefore, the utility model only needs to set a first fastener 31 to lock the second frame 20 on the first frame 10, which has a simple structure, convenient and fast operation, and saves time and effort.

[0061] In some embodiments, the outer periphery of the nut 312 is provided with an anti-slip portion 313. In this embodiment, the anti-slip portion 313 may be an uneven surface provided on the outer periphery of the nut 312, which fits the hand-held part of the human body and is convenient for the user to grasp, so as to realize the tightening and loosening of the first fastener 31, and facilitate the user to adjust the position between the camera auxiliary device and the camera device. The anti-slip portion 313 is uneven as a whole, which increases the roughness of the user's holding part, increases the friction, and plays an anti-slip role.

[0062] In some embodiments, a limiting groove 13 is provided on the side of the first frame 10 facing away from the second frame 20, the limiting groove 13 is connected to the slide groove 12, and the slider 22 and the limiting block 32 are respectively located in the limiting groove 13, which plays a role in limiting the sliding range of the slider 22. The slider 22 and the limiting block 32 can be spaced apart or in abutment contact.

[0063] Specifically, please refer to Figure 5 The slider 22 includes a sliding portion 221 and a connecting portion 222 protruding from the sliding portion 221. The width of the sliding portion 221 is greater than the opening width of the slide slot 12, so as to prevent the sliding portion 221 from sliding out of the slide slot 12, thereby ensuring a stable connection between the first frame 10 and the second frame 20. The sliding portion 221 slides in the limiting groove 13, and the connecting portion 222 penetrates the slide slot 12 and is connected to the second frame 20. The connecting portion 222 slides in the slide slot 12, playing a guiding role, guiding the sliding direction of the second frame 20 to avoid deviation.

[0064] In some embodiments, the first light-transmitting portion 11 is a first through hole 14 that passes through the first frame 10, and the second light-transmitting portion 21 is a second through hole 24 that passes through the second frame 20 and is directly opposite to the first through hole 14. The first through hole 14 and the second through hole 24 are respectively for light to pass through, and the camera auxiliary device is installed at the second through hole 24. Among them, the first frame 10 and the second frame 20 are both hollow structures, which saves structural materials and has low cost. In this embodiment, the first through hole 14 and the second through hole 24 are respectively arranged in a square shape. Of course, in other embodiments, the first through hole 14 and the second through hole 24 can also be other shapes, such as circular, elliptical, polygonal, etc., but are not limited to this.

[0065] In some embodiments, the second frame 20 is provided with a magnetic member 25 for magnetically matching with the camera auxiliary device on the outer periphery of the second through hole 24. In this embodiment, the magnetic member 25 can be a magnet or a magnet, the camera auxiliary device is a magnetic camera auxiliary device, the magnetic camera auxiliary device can include a magnetic matching part, the magnetic matching part can be a magnet or a magnetic metal material, the magnetic metal material can be a magnetic metal such as iron, cobalt, nickel and its alloy, and the magnetic camera auxiliary device and the second frame 20 are magnetically connected by the magnetic member 25 and the magnetic matching part, so as to achieve quick installation and disassembly, and simple and convenient operation.

[0066] Of course, in other embodiments, the magnetic component 25 can be made of magnetic metal material (such as iron, iron alloy, etc.), the camera auxiliary device is a magnetic camera auxiliary device, and the magnetic matching part can also be a magnet or a magnet, which can be specifically set according to actual conditions.

[0067] In this embodiment, a plurality of magnetic members 25 (e.g., 5) are provided, which are evenly distributed around the outer circumference of the second through hole 24 to improve the magnetic attraction stability between the second frame 20 and the magnetic camera auxiliary device; in this embodiment, the magnetic member 25 is arranged in an arc shape. Of course, in other embodiments, the magnetic member 25 can also be in other shapes, such as round, square, polygonal, etc., without limitation thereto.

[0068] In some embodiments, the second through hole 24 is at least partially provided with an internal thread for cooperating with the thread of the outer wall of the camera auxiliary device. The outer wall of the camera auxiliary device, such as a filter, is provided with an external thread. The camera auxiliary device and the expansion bracket 100 are connected by screwing together the external thread and the internal thread. The structure is simple, the disassembly and assembly are convenient, the connection is stable, and the stability of the camera is guaranteed.

[0069] The present invention also provides a filter assembly, including a filter and the above-mentioned extension bracket 100, wherein the filter is a camera auxiliary device. Since the present filter assembly adopts all the technical solutions of all the embodiments of the above-mentioned extension bracket 100, the filter assembly of the present invention also has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments of the extension bracket 100, which will not be described one by one here.

[0070] The connection between the filter and the expansion bracket 100 can be a snap connection, a threaded connection, a magnetic connection, etc., and the user can choose according to the use requirements. The filter can be a UV (ultraviolet) filter, a skylight filter, a polarizing filter, a gray filter (ND), a fog filter, etc., and can be selected according to the application environment, imaging requirements, etc. to meet people's different shooting needs.

[0071] The present invention also provides a camera assist system 200, which is used to be detachably mounted on a mobile terminal with a camera device. In this embodiment, the mobile terminal can be an electronic device with a camera device, such as a mobile phone, an iPad or a camera.

[0072] Please refer to Figure 6 and Figure 7 , the camera assist system 200 includes:

[0073] A connecting bracket 201, wherein the connecting bracket 201 is provided with a connecting structure 202 for detachably connecting to a mobile terminal and at least two connecting holes 203 arranged at intervals;

[0074] and the expansion bracket 100 as before or the filter assembly as before;

[0075] At least two second fasteners 204 are provided, and each second fastener 204 is connected to a connecting hole 203 .

[0076] In this embodiment, the connecting hole 203 can be a sliding hole for the second fastener 204 to slide therein, and is extended along the length direction of the connecting bracket 201, so that the extension bracket 100 can slide relative to the connecting bracket 201 to adjust the position of the camera auxiliary device relative to the camera device, thereby being compatible with different camera devices.

[0077] Since the above-mentioned camera assisting system 200 adopts all technical solutions of all embodiments of the above-mentioned extension bracket 100, the camera assisting system 200 of the present utility model also has at least all the beneficial effects brought by the technical solutions of the above-mentioned extension bracket 100 embodiments, which will not be repeated here one by one.

[0078] In some embodiments, the connection structure 202 is a cavity 205 for being mounted on the outside of the mobile terminal. The camera auxiliary system 200 can be directly mounted on the outside of the mobile terminal through the cavity 205, which has a simple structure and is convenient and quick to disassemble and assemble. Of course, in other embodiments, the connection structure 202 can also adopt other structures, such as using a mobile phone back clip to be mounted on the back of the mobile phone, but is not limited thereto.

[0079] In some embodiments, a hook 101 and a hook groove 206 for the hook 101 to be hooked are provided between the expansion bracket 100 and the connection bracket 201 .

[0080] In this embodiment, a hook 101 is provided on the expansion bracket 100, and a hook groove 206 is provided on the connecting bracket 201. The hook 101 and the second fastener 204 are respectively located on opposite sides of the expansion bracket 100; of course, in other embodiments, the hook 101 may be provided on the connecting bracket 201, and the hook groove 206 may be provided on the expansion bracket 100, according to actual conditions.

[0081] When the expansion bracket 100 is assembled with the connection bracket 201, the hook 101 is first hooked with the hook groove 206 to achieve assembly alignment between the two, and then the second fastener 204 is penetrated and connected to a connection hole 203 to achieve quick connection and locking. In the locked state, the hook 101 plays a role of supporting and buckling the components it hooks, and a stable connection is achieved between the two components.

[0082] In summary, the expansion bracket 100 of the utility model is detachably connected to the first frame 10 and the second frame 20 by setting a connecting member 30, and the second frame 20 is locked to the first frame 10, so that the expansion bracket 100 of the utility model realizes structural modularization, and the user can disassemble or install it according to the use requirements. The assembly is convenient, and the installation position of each module can be flexibly adjusted. Moreover, the connecting member 30 is connected to one of the first frame 10 and the second frame 20 in a manner that the connection position can be adjusted, so that the position of the camera auxiliary device relative to the camera device can be adjusted, the adjustment is convenient, and the compatibility and adaptability are strong.

[0083] The above embodiments of the utility model are merely examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the utility model are still within the scope of protection of the utility model.

Claims

1. An expansion bracket, used for detachably mounting a camera auxiliary device in front of a camera lens of a camera device, characterized in that: The expansion bracket comprises: A first frame, the first frame is used for detachably connecting with the camera device, and the first frame is formed with a first light-transmitting portion for light to pass through; a second frame, the second frame being used for detachably mounting the auxiliary camera device, and the second frame being arranged at one axial end of the first frame, and the second frame being formed with a second light-transmitting portion which is directly opposite to the first light-transmitting portion and is used for light to pass through; A connecting member is provided, wherein the connecting member is respectively connected to the first frame and the second frame to lock the second frame to the first frame, and the connecting member is connected to one of the first frame and the second frame in a manner in which the connection position can be adjusted.

2. The expansion bracket according to claim 1, characterized in that: One of the first frame and the second frame is provided with a slide groove, and the other is provided with a slider slidably matched with the slide groove; The connecting member passes through the sliding groove and locks the second frame to the first frame.

3. The expansion bracket according to claim 2, characterized in that: The first frame is provided with the slide groove, and the second frame is provided with a through hole facing the slide groove; The connecting member includes a first fastener and a limit block, the first fastener includes a screw and a nut, the screw is sequentially penetrated by the through hole and the slide groove, the nut is located on a side of the second frame away from the first frame, and the nut is connected to one end of the screw; The limiting block is located at a side of the first frame body away from the second frame body, and the limiting block is threadedly connected to an end of the screw rod away from the nut.

4. The expansion bracket according to claim 3, characterized in that: There are two slide grooves, which are arranged on the first frame at intervals and opposite to each other, and there are two corresponding sliders, each of which is slidably matched with one slide groove, and the limit block is arranged adjacent to one of the sliders; and / or, The outer periphery of the nut is provided with an anti-slip portion; and / or, A limiting groove is arranged on a side of the first frame body facing away from the second frame body. The limiting groove is communicated with the sliding groove. The sliding block and the limiting block are respectively located in the limiting groove.

5. The expansion bracket according to claim 1, characterized in that: The first light-transmitting portion is a first through hole penetrating through the first frame, and the second light-transmitting portion is a second through hole penetrating through the second frame and directly opposite to the first through hole.

6. The expansion bracket according to claim 5, characterized in that: The second frame is provided with a magnetic attraction member on the outer periphery of the second through hole for magnetically engaging with the camera auxiliary device; Alternatively, the second through hole is at least partially provided with an internal thread for cooperating with the thread of the outer wall of the camera auxiliary device.

7. A filter assembly, characterized in that: It comprises a filter and an expansion bracket as described in any one of claims 1 to 6, wherein the filter is the camera auxiliary device.

8. A camera assist system, which is detachably mounted on a mobile terminal having a camera device, characterized in that: The camera assistance system comprises: A connecting bracket, the connecting bracket being provided with a connecting structure for detachably connecting to the mobile terminal and at least two connecting holes arranged at intervals; and the expansion bracket according to any one of claims 1 to 6 or the filter assembly according to claim 7; At least two second fasteners, each of which is disposed through and connected to one of the connection holes.

9. The camera assist system according to claim 8, characterized in that: The connection structure is a concave cavity for being sleeved outside the mobile terminal.

10. The camera assist system according to claim 8, characterized in that: A hook and a hook groove for the hook to be hooked are arranged between the expansion bracket and the connection bracket.

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