Optical filter wheel structure, optical filter switching assembly, lens and camera device

Abstract

The application provides a filter wheel structure, a filter switching assembly, a lens and a camera device. The filter wheel structure comprises at least a first wheel body and a second wheel body arranged coaxially, the first wheel body and the second wheel body are rotationally connected, the first wheel body is provided with a first mounting slot for mounting a filter, the second wheel body is provided with a second mounting slot for mounting a filter, the slot depth of the first mounting slot in the axial direction of the filter wheel structure is different from the slot depth of the second mounting slot in the axial direction of the filter wheel structure. In this way, the mounting slot with different slot depths can be adapted according to the thickness of the filter, thereby improving the installation compatibility of the filter wheel for filters with different thicknesses. In addition, the first wheel body and the second wheel body are rotationally connected, the filters on the first wheel body and the filters on the second wheel body can be used separately or in combination, thereby supporting the flexible switching of multispectral imaging and hyperspectral imaging of the camera device.

Description

Technical Field

[0001] This application relates to the field of lens technology, and in particular to a filter wheel structure, a filter switching assembly, a lens, and a camera device. Background Technology

[0002] In order to obtain spectral information of different wavelength ranges, filters of different wavelength bands are needed when designing lenses. Therefore, modern lenses are usually equipped with a filter wheel. By installing filters of different wavelength bands on the filter wheel, any filter can be rotated into the optical path by rotating the filter wheel, so as to obtain spectral information of different wavelength bands through different filters.

[0003] In actual use, different filters have different thicknesses. However, the current filter wheel has poor thickness compatibility, which can cause the optical center of the lens to shift, resulting in poor image quality. Utility Model Content

[0004] The purpose of this application is to provide a filter wheel structure, a filter switching assembly, a lens, and a camera device, in order to solve the problem of poor thickness compatibility of the filter wheel.

[0005] In a first aspect, embodiments of this application provide a filter wheel structure, which includes at least a first wheel body and a second wheel body arranged coaxially;

[0006] The first wheel and the second wheel are rotatably connected. The first wheel is provided with a first mounting slot for mounting a filter, and the second wheel is provided with a second mounting slot for mounting a filter.

[0007] The groove depth of the first mounting slot along the axial direction of the filter wheel structure is different from the groove depth of the second mounting slot along the axial direction of the filter wheel structure.

[0008] In some embodiments, the first wheel body is provided with a first mounting hole, and the inner wall of the first mounting hole is provided with a first flange. The side of the first flange facing away from the second wheel body and the inner wall of the first mounting hole together form the first mounting groove.

[0009] And / or, the second wheel body is provided with a second mounting hole, the inner wall of the second mounting hole is provided with a second flange, and the side of the second flange facing away from the first wheel body and the inner wall of the second mounting hole together form the second mounting groove.

[0010] In some embodiments, there are at least two first mounting slots, and the at least two first mounting slots are spaced apart circumferentially along the first wheel body; all the first mounting slots have the same groove depth along the axial direction of the first wheel body or at least two of the first mounting slots have different groove depths along the axial direction of the first wheel body.

[0011] And / or, there are at least two second mounting slots, and the at least two second mounting slots are spaced apart circumferentially along the second wheel body; all the second mounting slots have the same groove depth along the axial direction of the second wheel body or at least two of the second mounting slots have different groove depths along the axial direction of the second wheel body.

[0012] In some embodiments, the groove depth of the first mounting slot is less than or equal to 1 mm;

[0013] And / or, the depth of the second mounting slot is greater than 1 mm.

[0014] In some embodiments, the distance between the first wheel and the second wheel along the axial direction of the filter wheel structure satisfies: Δh = (h2-h1) / 2;

[0015] Where h1 is the average thickness of the first wheel body along the axial direction of the filter wheel structure, h2 is the average thickness of the second wheel body along the axial direction of the filter wheel structure, and Δh is the spacing.

[0016] In some embodiments, the second wheel body has a mounting opening on the side opposite to the second mounting slot, the first wheel body is disposed in the mounting opening, and the outer surface of the second wheel body is lower than or flush with the slot of the mounting opening.

[0017] In some embodiments, a first rotating part is provided on the side of the first wheel body away from the first mounting slot, and a second rotating part is provided on the second wheel body at a position corresponding to the first rotating part, and the first rotating part and the second rotating part are rotatably engaged.

[0018] Secondly, embodiments of this application also provide a filter switching assembly, including at least two filters and a filter wheel structure;

[0019] The filter switching assembly further includes a drive mechanism, which is in transmission cooperation with the first wheel and the second wheel respectively to drive the first wheel and the second wheel to rotate.

[0020] Thirdly, embodiments of this application also provide a lens, including a filter wheel structure or a filter switching assembly.

[0021] Fourthly, embodiments of this application also provide a camera device, including a filter wheel structure, a filter switching assembly, or a lens.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a filter wheel structure, a filter switching assembly, a lens, and a camera device. The filter wheel structure includes at least a first wheel body and a second wheel body coaxially arranged and rotatably connected. The first wheel body has a first mounting slot for mounting a filter, and the second wheel body has a second mounting slot for mounting a filter. The groove depth of the first mounting slot along the axial direction of the filter wheel structure is different from the groove depth of the second mounting slot along the axial direction of the filter wheel structure. This arrangement allows for the adaptation of mounting slots with different groove depths according to the thickness of the filter, thereby improving the compatibility of the filter wheel with filters of different thicknesses. Furthermore, the rotatable connection between the first and second wheel bodies allows for the selection and use of filters on the first and second wheel bodies individually or in combination, supporting flexible switching between multispectral (single-band) imaging and hyperspectral (multi-band superposition) imaging in the camera device adapted to this filter wheel structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the filter wheel structure shown in the embodiments of this application. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the filter wheel structure shown in the embodiments of this application. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the structure of the first wheel body of the filter wheel structure shown in the embodiment of this application. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the structure of the first wheel body of the filter wheel structure shown in the embodiment of this application. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the structure of the second wheel of the filter wheel structure shown in the embodiments of this application. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the structure of the second wheel of the filter wheel structure shown in the embodiments of this application. Figure 2 .

[0031] Figure label:

[0032] 100, First wheel body; 110, First mounting slot; 120, First mounting hole; 130, First flange; 140, First rotating part; 200, Second wheel body; 210, Second mounting slot; 220, Second mounting hole; 230, Second flange; 240, groove; 250, Second rotating part. Detailed Implementation

[0033] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0034] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] Reference Figures 1 to 6 As shown, this application embodiment provides a filter wheel structure, which includes at least a first wheel body 100 and a second wheel body 200 arranged coaxially.

[0036] The first wheel body 100 and the second wheel body 200 are rotatably connected. The first wheel body 100 is provided with a first mounting slot 110 for mounting a filter, and the second wheel body 200 is provided with a second mounting slot 210 for mounting a filter.

[0037] The groove depth of the first mounting slot 110 along the axial direction of the filter wheel structure is different from that of the second mounting slot 210 along the axial direction of the filter wheel structure.

[0038] In practice, the first wheel body 100 and the second wheel body 200 are coaxially arranged. This ensures that the coaxiality of the filters installed on the first wheel body 100 and the second wheel body 200 is good, avoiding problems caused by poor coaxiality affecting the imaging results.

[0039] For example, the radial concentricity of the first wheel body 100 and the second wheel body 200 can be set to less than or equal to 0.005 mm.

[0040] Furthermore, by setting a rotatable connection between the first wheel body 100 and the second wheel body 200, the first wheel body 100 can be rotated to position its filter on the optical path while the second wheel body 200 is rotated to position its filter outside the optical path, or the first wheel body 100 can be rotated to position its filter outside the optical path while the second wheel body 200 is rotated to position its filter on the optical path, or the first wheel body 100 can be rotated to position its filter on the optical path while the second wheel body 200 is rotated to position its filter on the optical path. This allows for the use of a single filter or the superposition of two filters, thereby supporting flexible switching between multispectral (single-band) imaging and hyperspectral (multi-band superposition) imaging of the camera device adapted to this filter wheel structure.

[0041] Specifically, the first wheel body 100 is provided with a first mounting slot 110 for mounting a filter, and the second wheel body 200 is provided with a first mounting slot 110 for mounting a filter. The filter in the first mounting slot 110 and the filter in the second mounting slot 210 are filters with different filtering bands. Since the thickness of filters with different filtering bands usually has a certain difference, the groove depths of the first mounting slot 110 and the second mounting slot 210 are set to be different. This can accommodate the installation operation of filters with different thicknesses and improve the compatibility of the filter wheel structure with the installation of filters with different thicknesses.

[0042] For example, if the depth of the first mounting slot 110 is greater than the depth of the second mounting slot 210, a thicker filter can be installed in the first mounting slot 110, and a thinner filter can be installed in the second mounting slot 210. Conversely, by using mounting slots with different depths, filters of different thicknesses for corresponding wavelength bands can be assembled.

[0043] For example, the filter may specifically include a visible light narrow-band filter and an infrared thick filter. Specifically, the visible light narrow-band filter can be fitted into the one with the smaller depth of the first mounting slot 110 and the second mounting slot 210, and the infrared thick filter can be fitted into the one with the larger depth of the first mounting slot 110 and the second mounting slot 210. This achieves a reasonable fit between filters of different thicknesses, avoiding the problem of lens optical center shift due to thickness incompatibility, which could lead to poor image quality. In other words, the filter wheel structure of this embodiment can improve filter installation compatibility, thus effectively improving the image quality of lenses and imaging devices adapted to this filter wheel structure.

[0044] For example, the filter wheel structure can also be configured with a third wheel and a fourth wheel, and the specific number of wheels can be set according to actual needs.

[0045] The filter wheel structure of this embodiment includes at least a first wheel body 100 and a second wheel body 200 coaxially arranged, which are rotatably connected. The first wheel body 100 is provided with a first mounting slot 110 for mounting a filter, and the second wheel body 200 is provided with a second mounting slot 210 for mounting a filter. The groove depth of the first mounting slot 110 along the axial direction of the filter wheel structure is different from that of the second mounting slot 210 along the axial direction of the filter wheel structure. This arrangement allows for the adaptation of mounting slots with different groove depths according to the different average thicknesses of the filters, thereby improving the compatibility of the filter wheel with filters of different thicknesses. Furthermore, the first wheel 100 and the second wheel 200 are rotatably connected, which allows for the selection and use of the filter on the first wheel 100 and the filter on the second wheel 200 individually or in combination, to support flexible switching between multispectral (single-band) imaging and hyperspectral (multi-band superposition) imaging of the camera device adapted to the filter wheel structure, and to achieve high stability of multispectral imaging.

[0046] Reference Figure 3 and Figure 4 As shown, in some embodiments, a first mounting hole 120 is provided on the first wheel body 100, and a first flange 130 is provided on the inner wall of the first mounting hole 120. The side of the first flange 130 facing away from the second wheel body 200 and the inner wall of the first mounting hole 120 together form a first mounting groove 110.

[0047] In a specific implementation, the first wheel body 100 is provided with a first mounting hole 120 that extends through the filter wheel along its axial direction, and the inner wall of the first mounting hole 120 is provided with a first flange 130. Specifically, the first flange 130 can extend along the circumference of the filter wheel to form an annular structure. The side of the first flange 130 facing away from the second wheel body 200 and the inner wall of the first mounting hole 120 together form a first mounting groove 110. After the filter is inserted into the first mounting groove 110, it can be glued and fixed by adhesive.

[0048] For example, the first flange 130 and the first wheel body 100 can be integrally formed, which saves manufacturing steps and improves the structural strength of the entire first wheel body 100. Alternatively, the first flange 130 and the first wheel body 100 can be formed separately and then bonded or snapped together.

[0049] Reference Figure 5 and Figure 6As shown, in some embodiments, the second wheel body 200 is provided with a second mounting hole 220, and the inner wall of the second mounting hole 220 is provided with a second flange 230. The side of the second flange 230 facing away from the first wheel body 100 and the inner wall of the second mounting hole 220 together form a second mounting groove 210.

[0050] In a specific implementation, the second wheel body 200 is provided with a second mounting hole 220 that extends through the filter wheel along its axial direction, and the inner wall of the second mounting hole 220 is provided with a second flange 230. Specifically, the second flange 230 can extend along the circumference of the filter wheel to form an annular structure. The side of the second flange 230 facing away from the first wheel body 100 and the inner wall of the second mounting hole 220 together form a second mounting groove 210. After the filter is inserted into the second mounting groove 210, it can be glued and fixed by adhesive.

[0051] For example, the second flange 230 and the second wheel body 200 can be integrally formed, which saves manufacturing steps and improves the structural strength of the entire second wheel body 200. Alternatively, the second flange 230 and the second wheel body 200 can be formed separately and then bonded or snapped together.

[0052] In this embodiment, the side of the first flange 130 facing away from the second wheel body 200 and the inner wall of the first mounting hole 120 together form the first mounting groove 110, and the side of the second flange 230 facing away from the first wheel body 100 and the inner wall of the second mounting hole 220 together form the second mounting groove 210. That is, the groove opening of the first mounting groove 110 and the groove opening of the second mounting groove 210 are set opposite to each other, which facilitates the assembly of the filter. Of course, in other implementations, the groove opening of the first mounting groove 110 and the groove opening of the second mounting groove 210 can also be set opposite to each other. In this way, the filter can be assembled on the first wheel body 100 and the second wheel body 200 first, and then the first wheel body 100 and the second wheel body 200 can be assembled.

[0053] Reference Figure 3 and Figure 4 As shown, in some embodiments, there are at least two first mounting slots 110, and the at least two first mounting slots 110 are arranged at circumferential intervals along the first wheel body 100; all the first mounting slots 110 have the same groove depth along the axial direction of the first wheel body 100 or at least two first mounting slots 110 have different groove depths along the axial direction of the first wheel body 100.

[0054] This configuration allows the filter of the corresponding wavelength band in the first mounting slot 110 to be switched to the optical path by rotating the first wheel 100, thereby enabling the filtering operation of the corresponding wavelength band.

[0055] For example, the first mounting slot 110 can be as follows: Figure 1 The six shown can also be configured as two, three, four, etc. Each first mounting slot 110 can hold one filter, and each filter can have a different filtering band, which facilitates multispectral imaging based on different filters.

[0056] Furthermore, all the first mounting slots 110 have the same depth. This allows for the placement of filters of similar thickness but different wavelengths within the first mounting slots 110. If the filter thickness is less than the depth of the first mounting slot 110, shims can be added to adjust the height of the filters in all the first mounting slots 110 to be consistent, thus preventing the optical center of the lens from shifting and causing poor image quality. In addition, the consistent depth of all the first mounting slots 110 facilitates manufacturing, reducing processing costs and complexity.

[0057] Alternatively, at least two first mounting slots 110 can be set with different depths to accommodate filters of different thicknesses, further improving the installation compatibility of filters of different thicknesses.

[0058] Reference Figure 5 and Figure 6 As shown, in some embodiments, there are at least two second mounting slots 210, and the at least two second mounting slots 210 are arranged at circumferential intervals along the second wheel body 200; all the second mounting slots 210 have the same groove depth along the axial direction of the second wheel body 200 or at least two of the second mounting slots 210 have different groove depths along the axial direction of the second wheel body 200.

[0059] This configuration allows the filter of the corresponding wavelength band in the second mounting slot 210 to be switched to the optical path by rotating the second wheel 200, thereby enabling the filtering operation of the corresponding wavelength band.

[0060] For example, the second mounting slot 210 can be as follows: Figure 1 The six shown can also be configured as two, three, four, etc. Each second mounting slot 210 can hold one filter, and each filter can have a different filtering band, which facilitates multispectral imaging based on different filters.

[0061] Furthermore, all the second mounting slots 210 have the same depth. This allows for the placement of filters of similar thickness but different wavelengths within the second mounting slots 210. If the filter thickness is less than the depth of the second mounting slot 210, shims can be added to adjust the height of the filters in all the second mounting slots 210 to be consistent, thus preventing the optical center of the lens from shifting and causing poor image quality. In addition, the consistent depth of all the second mounting slots 210 facilitates manufacturing, reducing processing costs and complexity.

[0062] Alternatively, at least two second mounting slots 210 can be set with different depths to accommodate filters of different thicknesses, further improving the installation compatibility of filters of different thicknesses.

[0063] In some embodiments, the groove depth of the first mounting slot 110 is less than or equal to 1 mm to accommodate filters with a thickness of less than 1 mm, such as ultra-thin narrow-band filters.

[0064] For example, the depth of the first mounting slot 110 can be 1mm, 0.8mm, or 0.5mm.

[0065] For example, the second mounting slot 210 has a slot depth greater than 1 mm to accommodate a filter with a thickness greater than 1 mm, such as a thick infrared filter.

[0066] For example, the depth of the second mounting slot 210 can be 1.5mm, 2mm, or 2.5mm. This allows for the mixed use of filters with thickness differences ranging from 0.1mm to 5mm, expanding the spectral coverage of the multispectral lens. In this case, the lens can simultaneously mount ultra-thin narrowband filters and thick infrared filters.

[0067] In some embodiments, the distance Δh between the first wheel body 100 and the second wheel body 200 along the axial direction of the filter wheel structure satisfies: Δh = (h2-h1) / 2; where h1 is the average thickness of the first wheel body 100 along the axial direction of the filter wheel structure, and h2 is the average thickness of the second wheel body 200 along the axial direction of the filter wheel structure.

[0068] This configuration ensures that the optical center faces of the filters on the first wheel body 100 and the filters on the second wheel body 200 are aligned to the same plane, guaranteeing an optical path difference of ≤0.01mm, which is within the lens depth of field, thus ensuring the imaging effect.

[0069] Reference Figure 1 and Figure 2As shown, in some embodiments, a recessed groove 240 is provided on the side of the second wheel body 200 that is away from the second mounting groove 210. The first wheel body 100 is disposed in the recessed groove 240, and the outer surface of the second wheel body 200 is lower than or flush with the groove opening of the recessed groove 240. This achieves the embedded design of the first wheel body 100 in the second wheel body 200, so that the overall thickness of the entire filter wheel is smaller, which facilitates the miniaturization design.

[0070] Specifically, the radius of the second wheel body 200 is larger than the radius of the first wheel body 100. A groove 240 is provided on the second wheel body 200, and the inner contour shape of the groove 240 is adapted to the outer contour of the first wheel body 100, so that the first wheel body 100 can be fitted inside the second wheel body 200. At the same time, the outer surface of the second wheel body 200 is lower than or flush with the groove opening of the groove 240, so as to ensure aesthetics while avoiding increasing the size of the entire filter wheel.

[0071] Reference Figures 4 to 6 As shown, in some embodiments, a first rotating part 140 is provided on the side of the first wheel body 100 that is away from the first mounting slot 110, and a second rotating part 250 is provided on the second wheel body 200 at a position corresponding to the first rotating part 140. The first rotating part 140 and the second rotating part 250 rotate in cooperation, so that the first wheel body 100 and the second wheel body 200 can rotate independently without affecting each other, thereby realizing the flexible switching operation of the filter.

[0072] In a specific implementation, one of the first rotating part 140 and the second rotating part 250 is a rotating shaft, and the other is a rotating hole. For example, a rotating shaft can be provided on the first wheel body 100, and a rotating hole can be provided on the second wheel body 200. Alternatively, a rotating hole can be provided on the first wheel body 100, and a rotating shaft can be provided on the second wheel body 200.

[0073] Reference Figures 1 to 6 As shown in the figure, this application embodiment also provides a filter switching assembly, including at least two filters and a filter wheel structure.

[0074] The specific structure and implementation principle of the filter wheel structure in this embodiment are the same as those of the filter wheel structure provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0075] Specifically, the filter switching assembly also includes a drive mechanism, which is in transmission cooperation with the first wheel 100 and the second wheel 200 respectively to drive the first wheel 100 and the second wheel 200 to rotate respectively.

[0076] In a specific implementation, the driving mechanism may include two motors, which drive the first wheel 100 and the second wheel 200 to rotate respectively, thereby rotating the required filter onto the optical path to achieve the separation and detection of light by the filter and to obtain the corresponding spectral information.

[0077] Specifically, when only one filter on the first wheel body 100 needs to be in the optical path, the motor driven by the first wheel body 100 rotates the first wheel body 100 until that filter is in the optical path, and the motor driven by the second wheel body 200 rotates the second wheel body 200 until all filters are not in the optical path. Alternatively, when only one filter on the second wheel body 200 needs to be in the optical path, the motor driven by the second wheel body 200 rotates the second wheel body 200 until that filter is in the optical path, and the motor driven by the first wheel body 100 rotates the first wheel body 100 until all filters are not in the optical path, thereby achieving single-band multispectral imaging.

[0078] Alternatively, when both a filter on the first wheel body 100 and a filter on the second wheel body 200 need to be located on the optical path for superposition, the motor that drives the first wheel body 100 to rotate so that the filter is located on the optical path, and the motor that drives the second wheel body 200 to rotate so that the filter is located on the optical path, thereby realizing multi-band hyperspectral imaging.

[0079] Reference Figures 1 to 6 As shown in the embodiments of this application, a lens is also provided, including a filter wheel structure or a filter switching assembly.

[0080] The filter wheel structure and filter switching component in this embodiment have the same structure and implementation principle as the filter wheel structure and filter switching component provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0081] Reference Figures 1 to 6 As shown in the embodiments of this application, a camera device is also provided, including a filter wheel structure, a filter switching assembly, or a lens.

[0082] The filter wheel structure, filter switching component, and lens in this embodiment have the same structure and implementation principle as the filter wheel structure, filter switching component, and lens provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0083] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0084] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A filter wheel structure, characterized in that, It includes at least a first wheel body (100) and a second wheel body (200) arranged coaxially; The first wheel (100) and the second wheel (200) are rotatably connected. The first wheel (100) is provided with a first mounting slot (110) for mounting a filter, and the second wheel (200) is provided with a second mounting slot (210) for mounting a filter. The groove depth of the first mounting slot (110) along the axial direction of the filter wheel structure is different from the groove depth of the second mounting slot (210) along the axial direction of the filter wheel structure.

2. The filter wheel structure according to claim 1, characterized in that, The first wheel body (100) is provided with a first mounting hole (120), and the inner wall of the first mounting hole (120) is provided with a first flange (130). The side of the first flange (130) facing away from the second wheel body (200) and the inner wall of the first mounting hole (120) together form the first mounting groove (110). And / or, the second wheel body (200) is provided with a second mounting hole (220), the inner wall of the second mounting hole (220) is provided with a second flange (230), and the side of the second flange (230) facing away from the first wheel body (100) and the inner wall of the second mounting hole (220) together form the second mounting groove (210).

3. The filter wheel structure according to claim 1, characterized in that, There are at least two first mounting slots (110), and at least two first mounting slots (110) are arranged at circumferential intervals along the first wheel body (100); all first mounting slots (110) have the same groove depth along the axial direction of the first wheel body (100) or at least two first mounting slots (110) have different groove depths along the axial direction of the first wheel body (100). And / or, there are at least two second mounting slots (210), and at least two second mounting slots (210) are spaced apart circumferentially along the second wheel body (200); all the second mounting slots (210) have the same groove depth along the axial direction of the second wheel body (200) or at least two of the second mounting slots (210) have different groove depths along the axial direction of the second wheel body (200).

4. The filter wheel structure according to claim 1, characterized in that, The groove depth of the first mounting slot (110) is less than or equal to 1 mm; And / or, the groove depth of the second mounting slot (210) is greater than 1 mm.

5. The filter wheel structure according to claim 1, characterized in that, Along the axial direction of the filter wheel structure, the distance between the first wheel body (100) and the second wheel body (200) satisfies: Δh = (h2 - h1) / 2; Wherein, h1 is the average thickness of the first wheel body (100) along the axial direction of the filter wheel structure, h2 is the average thickness of the second wheel body (200) along the axial direction of the filter wheel structure, and Δh is the spacing.

6. The filter wheel structure according to claim 1, characterized in that, A groove (240) is provided on the side of the second wheel body (200) away from the second mounting slot (210). The first wheel body (100) is located in the groove (240), and the outer surface of the second wheel body (200) is lower than or flush with the opening of the groove (240).

7. The filter wheel structure according to claim 1, characterized in that, A first rotating part (140) is provided on the side of the first wheel body (100) away from the first mounting slot (110), and a second rotating part (250) is provided on the second wheel body (200) at a position corresponding to the first rotating part (140). The first rotating part (140) and the second rotating part (250) rotate in cooperation.

8. A filter switching assembly, characterized in that, It includes at least two filters and a filter wheel structure as described in any one of claims 1 to 7; The filter switching assembly further includes a driving mechanism, which is in transmission cooperation with the first wheel (100) and the second wheel (200) respectively, so as to drive the first wheel (100) and the second wheel (200) to rotate respectively.

9. A lens, characterized in that, It includes the filter wheel structure as described in any one of claims 1 to 7 or the filter switching assembly as described in claim 8.

10. A camera device, characterized in that, It includes the filter wheel structure as described in any one of claims 1 to 7, or the filter switching assembly as described in claim 8, or the lens as described in claim 9.

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