Filter switching device and imaging device

Abstract

The present invention discloses a filter switching device, comprising: a housing provided with a central axis, the housing including a connecting portion surrounding the central axis; a filter group including at least two filter switching components, the at least two filter switching components being distributed around the central axis; each of the filter switching components including a bracket and a filter fixed to the bracket, the filters on different filter switching components being different from each other, the at least two brackets and the corresponding filters being located in a first plane perpendicular to the central axis, the bracket being configured to be rotatably connected to the connecting portion in the first plane; the at least two filter switching components being configured such that the filter of one of them can be rotated to coincide with the central axis, with a simple structure and capable of realizing rapid filter switching. The present invention also discloses an imaging device.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging, and particularly to a filter switching device for freely selecting filters, and an imaging device including the filter switching device. Background Art

[0002] With the development of science and technology, more and more electronic devices have entered people's lives, and photography has become increasingly popular. People's demand for the use of imaging devices is getting higher and higher. In the optical principle of imaging devices, the selection of filters is a key factor. Different filter selections can achieve different imaging effects, and filter switching devices have emerged as the times require.

[0003] Currently, there are mainly three application structures of filters in the industry:

[0004] A. The rotating wheel rotation switching structure. However, in this structure, the central axis of the filter wheel is eccentrically placed with the center line of the lens, occupying a large space and being unfavorable for the integration of products.

[0005] B. The push-pull displacement switching structure. The main disadvantage of the linear push-pull displacement switching structure is also that the product is severely eccentric, which is unfavorable for the integration of products.

[0006] C. The manual plug-in switching structure. Its main disadvantages are low product integration. For the application of multiple filters, additional filters need to be carried, which is unfavorable for the protection of filters. During use, the insertion port needs to be opened, which is unfavorable for the dust-proof and light-leakage prevention designs of products, and it is also inconvenient to use. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the present invention provides a filter switching device capable of freely selecting filters, and an imaging device including the filter switching device.

[0008] An embodiment of the present invention provides a filter switching device, including:

[0009] A housing provided with a central axis, and the housing includes a connecting portion surrounding the central axis;

[0010] A filter group including at least two filter switching components distributed around the central axis; each filter switching component includes a bracket and a filter fixed to the bracket. The filters on different filter switching components are different from each other. At least two of the brackets and the corresponding filters are located in a first plane perpendicular to the central axis, and the brackets are configured to be rotatably connected to the connecting portion in the first plane; at least two of the filter switching components are configured such that the filter of one of them can be rotated to coincide with the central axis.

[0011] Preferably, the connecting part includes an annular substrate surrounding the central axis, a rotating shaft perpendicular to the annular substrate and corresponding to the filter switching assembly. Each bracket includes a rotating arm and a mounting frame connected to one end of the rotating arm. The mounting frame fixes the corresponding filter, and a through hole adapted to the rotating shaft is provided at the end of the rotating arm away from the mounting frame.

[0012] Preferably, each bracket further includes a propping arm extending from the rotating arm towards the end away from the mounting frame. Each filter switching assembly further includes a propping member. The propping member is slidably connected to the annular substrate, and the propping member slidably props against the corresponding propping arm to rotate the bracket.

[0013] Preferably, the filter switching device further includes a filter selection ring. The connecting part further includes a limiting wall vertically extending upwards from the outer edge of the annular substrate. The filter selection ring is sleeved on the limiting wall. A retreat groove is provided on the inner side wall of the filter selection ring. The inner side wall of the filter selection ring pushes against the propping member, and the retreat groove can accommodate one of the propping members to release the propping of the propping member against the corresponding bracket.

[0014] Preferably, the filter switching assembly further includes an elastic member. The connecting part further includes a propping wall vertically extending downwards from the inner edge of the annular substrate. The propping member includes a slider slidably adapted to the annular substrate and a propping column provided on the slider. The elastic member is provided between the slider and the propping wall. The filter selection ring pushes against the slider to compress the elastic member and drives the propping column to push against the propping arm.

[0015] Preferably, the annular substrate is provided with a slideway adapted to the propping member. The extending direction of the slideway passes through the central axis. The limiting wall is provided with an opening corresponding to the slideway. The slider slides in the corresponding slideway, and the slider passes through the opening and abuts against the filter selection ring.

[0016] Preferably, the cross-section of the slider is arranged in an I-shaped structure adapted to the slideway. The end of the slider away from the central axis is arranged in a wedge-shaped structure perpendicular to the annular substrate. The retreat groove is correspondingly arranged in a wedge-shaped structure. The propping column is provided at the end. The filter selection ring simultaneously pushes against the slider and the propping column.

[0017] Preferably, the elastic member is arranged as a spring. The propping member is provided with a receiving hole along the sliding direction, and the receiving hole receives the corresponding elastic member.

[0018] Preferably, each of the filter switching components further includes a torsion spring sleeved on the corresponding rotating shaft. One connecting arm of the torsion spring is connected to the abutting support arm, and the other connecting arm of the torsion spring is connected to the connecting portion. The abutting member slidably abuts against the corresponding abutting support arm to compress the torsion spring.

[0019] Preferably, the shape of the mounting frame is set to be circular. The rotating support arm includes a supporting section connected to the mounting frame and a connecting section connecting the supporting section and the rotating shaft. The connecting section is set to be an arc corresponding to the mounting frame.

[0020] Preferably, the number of the filter sets is set to two. At least two of the brackets and the corresponding filters of one of the filter sets are located in a first plane perpendicular to the central axis, and at least two of the brackets and the corresponding filters of the other filter set are located in a second plane parallel to the first plane. The brackets of the two filter sets are distributed around the central axis, and one of the filters of the two filter sets can be rotated to coincide with the central axis.

[0021] Preferably, the housing includes a front shell, a rear shell, and a spacer disposed between the front shell and the rear shell. The number of the filter sets is set to four, and two of the filter sets are disposed on the front shell, and the other two filter sets are disposed on the rear shell.

[0022] An embodiment of the present invention further provides an imaging device, including a housing, a filter switching device according to any one of the above, and a lens mount. The housing of the filter switching device is mounted between the housing and the lens mount, and the central axis of the filter switching device coincides with the main optical axis of the imaging device.

[0023] In the above filter switching device and imaging device of the present invention, at least two filter switching components of the filter set are disposed around the central axis and rotatably respectively. The brackets and the filters of at least two filter switching components are disposed in the same plane. When it is necessary to switch and select a certain filter, rotate the bracket corresponding to the filter so that the filter coincides with the central axis, that is, the filter selection and switching are completed. The structures of the filter switching device and the imaging device are simple, the filter integration degree is high, and the filter selection and switching operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope of the present invention.

[0025] Figure 1It is a schematic diagram of the three-dimensional exploded structure of the imaging device provided by an embodiment of the present invention. The imaging device includes a filter switching device;

[0026] Figure 2 is Figure 1 a schematic diagram of the three-dimensional exploded structure of some components of the filter switching device in

[0027] Figure 3 is Figure 2 a schematic diagram of the three-dimensional assembled structure of

[0028] Figure 4 is Figure 1 a top view of the filter selection ring in

[0029] Figure 5 is Figure 1 a schematic diagram of the assembled structure of the filter switching device in

[0030] Figure 6 is Figure 5 a top view of

[0031] Figure 7 It is a top view of the assembled structure of the filter switching device provided by another embodiment of the present invention. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] The imaging device and the filter switching device embodiments according to the present invention will be described in detail below with reference to the drawings.

[0034] Please refer to Figure 1 , an embodiment of the present invention provides an imaging device 200. The imaging device 200 includes a housing 201, a filter switching device 100, and a lens mount 202 arranged in sequence. The imaging device 200 also has a main optical axis (not shown in the figure) passing through the filter switching device 100 and the lens mount 202. It can be understood that the imaging device 200 further includes an optical path component 203 provided on the main optical axis; the lens mount 202 is used to connect to an external lens (not shown in the figure), and the optical path component 203, the filter switching device 100, and the lens form the optical path of the imaging device 200.

[0035] Among them, the components between the housing 201 and the lens mount 202 form the filter switching device 100. The filter switching device 100 includes: a front shell 10, two groups of filter switching groups 20, two filter selection rings 30, a spacer 40, and a rear shell 50.

[0036] Specifically, the front shell 10 and the rear shell 70 have the same structure. One set of filter switching groups 20 and one of the filter selection rings 30 are installed on the front shell 10, and the other set of filter groups 20 and the other filter selection ring 30 are installed on the rear shell 50. The spacer 40 is arranged between the installed front shell 10 and the rear shell 70. The front shell 10 and the rear shell 50 are installed as a whole to form the complete filter switching device 100.

[0037] It can be understood that in other embodiments, the number of the filter groups 20 and the corresponding filter switching devices 30 can be set to one group. Correspondingly, the spacer 40 can be omitted, and the installation structure of one of the front shell 10 or the rear shell 70 is adaptively changed to meet the assembly requirements by cooperating with the other for installation.

[0038] Please refer to Figure 2 and Figure 3 , which shows the exploded structure schematic diagram of some components in the filter switching device 100. The front shell 10 includes an annular substrate 11, and the central axis perpendicular to the annular substrate 11 is the central axis of the filter switching device; ten slideways 12 extending from the outer edge towards the central axis are evenly distributed on the annular substrate 11. Between every two of the slideways 12, there is a boss 13. Near the slideway 12 of the boss 13, there is a vertical rotating shaft 14. The outer edge of the annular substrate 11 vertically extends upwards between every two of the slideways 12 to form a limiting wall 15. An opening 16 corresponding to and communicating with the slideway is formed inside the limiting wall 15. The limiting wall 15 bulges inwards near the rotating shaft 14 to form a connecting protrusion 151. The connecting protrusion 151 is provided with an installation hole 152 perpendicular to the annular substrate 11. The limiting wall 13 also sequentially extends downwards and then outwards to form a limiting step 17. The inner edge of the annular substrate 11 extends downwards to form an abutting wall 18.

[0039] The filter switching group 20 includes ten filter switching components 21. Each filter switching component 21 includes a filter 29, and the filters 29 of different filter switching components 21 are different from each other. Each filter switching component 21 further includes a filter bracket 22, a torsion spring 23, an abutting member 24, and an elastic member 25.

[0040] Among them, the bracket 22 includes a rotating arm 221 and a mounting frame 222 connected to one end of the rotating arm 221. The mounting frame 222 fixes the filter 29. One end of the rotating arm 221 away from the mounting frame 222 extends to form an abutting arm 223. A through hole 224 corresponding to the rotating shaft 14 is provided at the connection between the rotating arm 221 and the abutting arm 223, and a receiving groove 225 communicating with the through hole 224 and extending perpendicular to the direction of the through hole. The part of the receiving groove 225 on the abutting arm 223 is a groove, and the part on the rotating arm 221 is a through groove. The torsion spring 23 is received in the receiving groove 225. The torsion spring 23 and the through hole 224 are sleeved on the rotating shaft 14 together. One connecting arm of the torsion spring 23 is connected to the abutting arm 223, and the other connecting arm passes through the rotating arm 221 and is connected to the connecting protrusion 151 of the limiting wall 15.

[0041] The abutting member 24 includes a slider 241 and an abutting column 242 provided on the slider 241. The cross-section of the slider 241 is an I-shaped structure. The first end of the slider 241 is set as a wedge-shaped structure extending vertically. The abutting column 242 is vertically arranged at the first end of the slider 241, and the abutting column 242 is vertically flush with the wedge-shaped structure of the slider 241. A receiving hole 243 extending towards the first end is recessed in the second end of the slider 241 opposite to the first end.

[0042] The elastic member 25 is set as a spring and is received in the receiving hole 243. The slider 241 is adapted to the slideway 12 of the annular substrate 11. The abutting member 24 slides along the slideway 12. One end of the elastic member 25 away from the abutting member 24 abuts against the abutting wall 18 of the annular substrate 11, and the inner side of the abutting column 242 pushes against the abutting arm 223.

[0043] Please refer to Figure 4 , a retreat groove 31 is provided on the inner side wall of the filter selection ring 30. The filter selection ring 30 is sleeved on the limiting wall 15 and is limited by the limiting step 17. The inner side wall of the filter selection ring 30 pushes against the abutting member 24, and the retreat groove 31 can receive one of the abutting members 24. The retreat groove 31 is correspondingly set as a vertical wedge-shaped structure.

[0044] Please refer to Figure 5 and Figure 6, after the front shell 10, the ten filter switching components 21, the ten abutting members 24, the ten elastic members 25 and the filter selection ring 30 are assembled. The ten filter switching components 21 are configured such that five of the filter switching components 21 that are spaced apart from each other are disposed in a first plane, and correspondingly, the other five filter switching components 21 that are also spaced apart from each other are disposed in a second plane.

[0045] When the filter switching device 100 works, when the filter selection ring 30 is rotated so that the recessed groove 31 faces one of the abutting members 24, the abutting member 24 slides and is received in the recessed groove 31 under the action of the elastic member 25, and the corresponding abutting support arm 223 also rotates toward the recessed groove 31 under the action of the torsion spring 23, and the rotating arm 221 rotates toward the central axis accordingly. When the abutting member 24 is completely received in the recessed groove 31, the rotating arm 221 drives the mounting frame 222 to rotate to coincide with the central axis, that is, the filter 29 correspondingly rotates to the central axis position, realizing one-time switching of the filter 29. Further, when the filter selection ring 30 is rotated and the other abutting members 24 are received in the recessed groove 31, switching to other filters 29 is realized.

[0046] It can be understood that the above embodiments are the best embodiments of the present invention. In other embodiments, the elements in the above embodiments can be omitted, or the same functions can be achieved by other structures.

[0047] It can be understood that in other embodiments, the front shell 10 and the rear shell 70 can be provided as an integral housing, and the structure of the housing can be simplified. In addition, the number of the filter switching components 21 can also be changed and set to at least two, and then it can be set to a single-layer structure, and the numbers of the abutting members 24 and the elastic members 25 are set to correspond to the number of the filter switching components 21. The torsion spring 23, the abutting member 24, the elastic member 25, and the filter selection ring 30 can be selectively omitted, and the filter switching selection is achieved through other structures, such as directly operating the rotating arm 221, or controlling the rotating arm 221 by setting an operating structure, etc.

[0048] Please refer to Figure 7 , specifically, the filter switching device 100 can be set to include: a housing provided with a central axis, and the housing includes a connecting portion surrounding the central axis;

[0049] Filter assembly, including at least two filter switching components 21, and at least two of the filter switching components 10 are distributed around the central axis; each of the filter switching components 21 includes a bracket 22 and a filter 29 fixed to the bracket 22, and the filters 29 on different filter switching components 21 are different from each other. At least two of the brackets 22 and the corresponding filters 29 are located in a first plane perpendicular to the central axis, and the bracket 22 is configured to be rotatably connected to the connecting portion in the first plane; at least two of the filter switching components 21 are configured such that the filter 29 of one of them can be rotated to coincide with the central axis.

[0050] Further, the connecting portion includes an annular substrate 11 around the central axis and a rotating shaft 14 perpendicular to the annular substrate 11 and corresponding to the filter switching component 21. Each of the brackets 22 includes a rotating arm 221 and a mounting frame 222 connected to one end of the rotating arm 221. The mounting frame 222 fixes the corresponding filter 29, and a through hole 224 adapted to the rotating shaft 14 is provided at an end of the rotating arm 221 away from the mounting frame 222. In this embodiment, the structure of the annular substrate 11 is simplified, and the structures of the slideway 12, the boss 13, the opening 16, the limiting step 17, and the abutting wall 18 therein are omitted, and it is only necessary to enable the rotating arm 221 to rotate on the annular substrate 11.

[0051] Further, each of the brackets 22 further includes a abutting arm 223 extending from the rotating arm 221 away from the mounting frame 222. Each of the filter switching components 21 further includes an abutting member 24. The abutting member 24 is slidably connected to the annular substrate 11, and the abutting member 24 slidably abuts against the corresponding abutting arm 223 to rotate the bracket 22. In this embodiment, the structure of the abutting member 24 is simplified, and it is only necessary to enable the abutting member 24 to slide on the annular substrate 11. For example, the annular substrate 11 and the abutting member 24 are provided with adapted tracks.

[0052] Further, it further includes a filter selection ring 30. The connecting portion further includes a limiting wall 15 vertically extending upward from the outer edge of the annular substrate 11. The filter selection ring 30 is sleeved on the limiting wall 15; a retreat groove 31 is provided on the inner side wall of the filter selection ring 30. The inner side wall of the filter selection ring 30 abuts and pushes the abutting member 24, and the retreat groove 31 can accommodate one of the abutting members 24 to release the abutting member 24 from abutting against the corresponding bracket 22.

[0053] Further, the filter switching assembly 21 further includes an elastic member 25. The connecting portion further includes a resisting wall 18 vertically extending downward from the inner edge of the annular substrate 11. The resisting member 24 includes a slider 241 slidably adapted to the annular substrate 11 and a resisting post 242 disposed on the slider 241. The elastic member 25 is disposed between the slider 241 and the resisting wall 18. The filter selection ring 30 pushes against the slider 241 to compress the elastic member 25 and drives the resisting post 242 to push against the resisting support arm 223. In this embodiment, the elastic member 25 is made of a flexible shrinkable material, and its two ends are respectively abutted against the slider 241 and the resisting wall 18, and can be compressed by the slider 241, and when the pressure on the slider 241 is released, it provides a resilience force to the slider 241.

[0054] Further, the annular substrate 11 is provided with a slideway 12 adapted to the resisting member 24. The extending direction of the slideway 12 passes through the central axis. The limiting wall 15 is provided with an opening 16 corresponding to the slideway 12. The slider 241 slides in the corresponding slideway 12, and the slider 241 passes through the opening 16 and abuts against the filter selection ring 30. In this embodiment, the slider 241 is adapted to the slideway 12. For example, it can be set that the slider 241 is provided with a rib received in the slideway 12.

[0055] Further, the cross-section of the slider 241 is arranged in an I-shaped structure adapted to the slideway 12. The end of the slider 241 away from the central axis is arranged in a wedge-shaped structure perpendicular to the annular substrate. The retreat groove 31 is correspondingly arranged in a wedge-shaped structure. The resisting post 242 is disposed at the end portion. The filter selection ring 30 simultaneously pushes against the slider 241 and the resisting post 242.

[0056] Further, the elastic member 25 is set as a spring. The resisting member 24 is provided with a receiving hole 243 along the sliding direction, and the corresponding elastic member is received in the receiving hole 243.

[0057] Further, each filter switching assembly 21 further includes a torsion spring 23. The torsion spring 23 is sleeved on the corresponding rotating shaft 14. One connecting arm of the torsion spring 23 is connected to the resisting support arm 223, and the other connecting arm of the torsion spring 23 is connected to the connecting portion. The resisting member 24 slidably abuts against the corresponding resisting support arm 223 to compress the torsion spring 23.

[0058] Further, the shape of the mounting frame 23 is set to be circular. The rotating support arm 221 includes a support section 226 connected to the mounting frame 23 and a connecting section 227 connecting the support section 226 and the rotating shaft 14. The connecting section 227 is set to be an arc corresponding to the mounting frame 23. In this embodiment, when a filter switching assembly 21 rotates to make the corresponding filter 29 coincide with the central axis, the connecting section 227 correspondingly fits with the mounting frame 23 of an adjacent filter switching assembly 21.

[0059] Further, the number of the filter sets is set to two. At least two of the brackets 22 and the corresponding filters 29 of one of the filter sets are located in a first plane perpendicular to the central axis, and at least two of the brackets 22 and the corresponding filters 29 of the other filter set are located in a second plane parallel to the first plane. The brackets 22 of the two filter sets are distributed around the central axis, and one of the filters 29 of the two filter sets can rotate to coincide with the central axis.

[0060] In the above filter switching device and imaging device of the present invention, at least two filter switching assemblies of the filter set are respectively rotatably arranged around the central axis. The brackets of at least two filter switching assemblies and the filters are arranged in the same plane. When it is necessary to switch and select a certain filter, rotate the bracket corresponding to the filter so that the filter coincides with the central axis, and the filter selection and switching are completed. The structures of the filter switching device and the imaging device are simple, the filter integration degree is high, and the filter switching and selection operations are convenient.

[0061] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of them should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A filter switching device, characterized in that, it includes: a housing provided with a central axis, and the housing includes a connecting portion around the central axis; a filter group including at least two filter switching components, and at least two of the filter switching components are distributed around the central axis; each of the filter switching components includes a bracket and a filter fixed to the bracket, and the filters on different filter switching components are different from each other. At least two of the brackets and the corresponding filters are located in a first plane perpendicular to the central axis, and the brackets are configured to be rotatably connected to the connecting portion in the first plane; at least two of the filter switching components are configured such that the filter of one of them can be rotated to coincide with the central axis; the connecting portion includes an annular substrate around the central axis and a rotating shaft perpendicular to the annular substrate and corresponding to the filter switching component. Each of the brackets includes a rotating arm and a mounting frame connected to one end of the rotating arm. The mounting frame fixes the corresponding filter, and a through hole adapted to the rotating shaft is provided at the end of the rotating arm away from the mounting frame; the housing includes a front housing, a rear housing and a spacer disposed between the front housing and the rear housing. The number of the filter groups is set to four groups, and two of the filter groups are disposed on the front housing, and the other two filter groups are disposed on the rear housing; the front housing and the rear housing have the same structure.

2. The filter switching device according to claim 1, characterized in that, each of the brackets further includes a resisting arm extending from the rotating arm towards the end away from the mounting frame. Each of the filter switching components further includes a resisting member, and the resisting member is slidably connected to the annular substrate, and the resisting member slidably resists the corresponding resisting arm to rotate the bracket.

3. The filter switching device according to claim 2, characterized in that, it further includes a filter selection ring. The connecting portion further includes a limiting wall vertically extending upwards from the outer edge of the annular substrate, and the filter selection ring is sleeved on the limiting wall; a retreat groove is provided on the inner side wall of the filter selection ring, and the inner side wall of the filter selection ring pushes against the resisting member, and the retreat groove can accommodate one of the resisting members to release the resisting of the corresponding bracket by the resisting member.

4. The filter switching device according to claim 3, characterized in that, the filter switching component further includes an elastic member. The connecting portion further includes a resisting wall vertically extending downwards from the inner edge of the annular substrate. The resisting member includes a slider slidably adapted to the annular substrate and a resisting post provided on the slider. The elastic member is disposed between the slider and the resisting wall. The filter selection ring pushes against the slider to compress the elastic member and drives the resisting post to push against the resisting arm.

5. The filter switching device according to claim 4, characterized in that, The annular substrate is provided with a slideway adapted to the abutting member, the extending direction of the slideway passes through the central axis, the limiting wall is provided with an opening corresponding to the slideway, the slider slides in the corresponding slideway, and the slider passes through the opening and abuts against the filter selection ring.

6. The filter switching device according to claim 5, wherein, the cross-section of the slider is arranged in an I-shaped structure adapted to the slideway, the end of the slider away from the central axis is arranged in a wedge-shaped structure perpendicular to the annular substrate, the retreat groove is correspondingly arranged in a wedge-shaped structure, the abutting column is arranged at the end, and the filter selection ring simultaneously abuts and pushes the slider and the abutting column.

7. The filter switching device according to any one of claims 4-6, wherein, the elastic member is arranged as a spring, the abutting member is provided with a receiving hole along the sliding direction, and the corresponding elastic member is received in the receiving hole.

8. The filter switching device according to claim 2, wherein, each filter switching assembly further includes a torsion spring, the torsion spring is sleeved on the corresponding rotating shaft, one connecting arm of the torsion spring is connected to the abutting support arm, the other connecting arm of the torsion spring is connected to the connecting portion, and the abutting member slides and abuts against the corresponding abutting support arm to compress the torsion spring.

9. The filter switching device according to claim 1, wherein, the shape of the mounting frame is arranged as a circle, the rotating support arm includes a support section connected to the mounting frame and a connecting section connecting the support section and the rotating shaft, and the connecting section is arranged in an arc shape corresponding to the mounting frame.

10. The filter switching device according to claim 1, wherein, the number of the filter groups is arranged as two groups, at least two of the brackets and the corresponding filters of one filter group are located in a first plane perpendicular to the central axis, at least two of the brackets and the corresponding filters of the other filter group are located in a second plane parallel to the first plane, the brackets of the two filter groups are distributed around the central axis, and one of the filters of the two filter groups can rotate to coincide with the central axis.

11. An imaging device, wherein, it includes an optical path device, a housing, the filter switching device according to any one of claims 1-10, and a lens mount. The housing of the filter switching device is installed between the housing and the lens mount, and the central axis of the filter switching device coincides with the main optical axis of the imaging device.

Images