Optical lens shading device and optical lens

Abstract

The utility model provides an optical lens shading device and an optical lens. The optical lens shading device comprises a first cover plate, a second cover plate which is spaced from the first cover plate in parallel, a driving structure arranged on the first cover plate, and a plurality of shading plates arranged between the first cover plate and the second cover plate. Wherein the optical lens shading device is defined with a central axis and a light hole, and the first cover plate is provided with a plurality of first limiting grooves arranged around the central axis; the second cover plate is provided with a plurality of second limiting grooves arranged around the central shaft; the driving structure is used for driving the first cover plate to rotate around the central shaft; the shading plate is provided with a first shaft body slidably arranged in the first limiting groove and a second shaft body slidably arranged in the second limiting groove, and the shading plate can rotate around the first shaft body and the second shaft body at the same time to open or close the light hole. The optical lens shading device can be integrated in the optical lens, manual or electric opening and closing can be achieved, and the use convenience degree of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and more particularly to an optical lens shading device and an optical lens. Background Art

[0002] Existing optical lenses achieve protection and shading functions through lens covers, and the lens covers are detachably mounted on the optical lenses. To prevent the lens covers from being lost, users need to connect the lens covers to the optical lenses through flexible connectors, or users need to set a location for storing the lens covers in a storage bag. Both of the above methods are inconvenient for users. Utility Model Content

[0003] The purpose of the utility model is to provide an optical lens shading device and an optical lens, so as to solve the technical problem that the lens cover of the optical lens is inconvenient to use in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, an optical lens shading device is provided, comprising:

[0006] A first cover plate, a second cover plate parallel to and spaced apart from the first cover plate, a driving structure provided on the first cover plate, and a plurality of light-shielding plates provided between the first cover plate and the second cover plate; wherein the optical lens light-shielding device defines a central axis and a light-transmitting hole, the first cover plate is provided with a plurality of first limiting grooves evenly arranged around the central axis; the second cover plate is provided with a plurality of second limiting grooves evenly arranged around the central axis; the driving structure is used to drive the first cover plate to rotate around the central axis; the light-shielding plate, the first limiting groove and the second limiting groove correspond to each other one by one, the light-shielding plate is provided with a first axis body slidably provided in the first limiting groove and a second axis body slidably provided in the second limiting groove, the light-shielding plate can rotate around the first axis body and the second axis body at the same time to open or close the light-transmitting hole; the plurality of light-shielding plates close the light-transmitting hole when the first cover plate rotates to a first rotation position relative to the second cover plate, and the plurality of light-shielding plates open the light-transmitting hole when the first cover plate rotates to a second rotation position relative to the second cover plate.

[0007] By adopting the above technical solution, the optical lens shading device can be integrated into the optical lens, and can be opened and closed manually or electrically, thereby avoiding loss and improving user convenience.

[0008] In one embodiment, the first shaft and the second shaft are spaced apart on the light shielding plate, and the first limiting groove and the second limiting groove are staggered, so that the plurality of light shielding plates can rotate around the first shaft and the second shaft at the same time under the limitation of the groove walls of the first limiting groove and the second limiting groove.

[0009] By adopting the above technical solution, the reliability of the light shielding plate in opening and closing the light-transmitting hole is ensured.

[0010] In one embodiment, the shading plate includes a shading portion and a connecting portion connecting the shading portion, the shading portion is connected to the adjacent shading portion when the shading plate closes the light-transmitting hole, and the first shaft and the second shaft are located on the connecting portion.

[0011] By adopting the above technical solution, the shading effect of the shading plate is improved.

[0012] In one embodiment, the cross-section of the light shielding portion is triangular in shape.

[0013] By adopting the above technical solution, the shading effect of the shading plate is further improved.

[0014] In one embodiment, the first shaft is located at an edge of the connecting portion, and the second shaft is located in a middle portion of the connecting portion.

[0015] By adopting the above technical solution, the rotation flexibility of the shading plate is improved.

[0016] In one embodiment, the number of the first limiting slots is six, eight or twelve, and the plurality of the first limiting slots are connected end to end. The number of the second limiting slots corresponds to the number of the first limiting slots, and two adjacent second limiting slots are spaced apart.

[0017] By adopting the above technical solution, when the number of first limiting grooves is smaller, the number of light shielding plates is also smaller. In this way, the light shielding plates are easily driven to rotate by the driving structure, saving the force required to open and close the light-transmitting holes, but each light shielding plate occupies a large space; when the number of first limiting grooves is greater, the number of light shielding plates is also greater. In this way, the space required for the light shielding plates to occupy is smaller.

[0018] In one embodiment, the second limiting groove extends from a middle portion of the corresponding first limiting groove in a direction away from the first limiting groove.

[0019] By adopting the above technical solution, the flexibility of the rotation of the shading plate is improved.

[0020] In one embodiment, the second cover plate is provided with a receiving groove for accommodating the first cover plate, the groove wall of the receiving groove in the circumferential direction is provided with a guide groove, the driving structure passes through the guide groove and is connected to the first cover plate, and the driving structure can move along the groove length direction of the guide groove.

[0021] By adopting the above technical solution, the guide groove defines the moving direction of the driving structure, thereby improving the stability of the first cover plate when rotating relative to the second cover plate.

[0022] In one embodiment, the driving structure is an electric driving structure or a manual driving structure.

[0023] By adopting the above technical solution, the optical lens shading device has multiple driving modes and various operating modes.

[0024] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned optical lens shading device, wherein the optical lens shading device is provided on the optical lens body.

[0025] By adopting the above technical solution, on the basis of having the advantages of the optical lens shading device of the above embodiment, the optical lens of this embodiment also has the advantage of convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a three-dimensional structural diagram of the optical lens shading device provided by an embodiment of the utility model, wherein the shading plate opens a light-transmitting hole.

[0028] Figure 2 It is a three-dimensional structural diagram of the optical lens shading device provided by an embodiment of the utility model, wherein the shading plate closes the light-transmitting hole.

[0029] Figure 3 This is an exploded view of the optical lens shading device provided by an embodiment of the utility model, wherein the shading plate opens a light-transmitting hole.

[0030] Figure 4 This is an exploded view of the optical lens shading device provided by an embodiment of the utility model, wherein the shading plate closes the light-transmitting hole.

[0031] The reference numerals in the figures are:

[0032] 1. First cover plate; 2. Second cover plate; 3. Driving mechanism; 4. Sunshade; 5. Lens connector;

[0033] 10. Central axis; 20. Light hole;

[0034] 11. First limiting groove; 21. Second limiting groove; 22. Accommodating groove; 23. Guide groove; 41. First shaft; 42. Second shaft; 43. Light shielding portion; 44. Connecting portion; 51. Engaging groove. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate relative importance or the number of technical features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. The following is a more detailed description of the specific implementation of this utility model in conjunction with specific embodiments:

[0039] like Figure 1 and Figure 2 As shown, an optical lens shading device provided by an embodiment of the present invention is used to be installed in an optical lens, so that the optical lens has a protective function and a shading function; the optical lens shading device of this embodiment is integrated into the optical lens and can be opened and closed manually or electrically to avoid loss, thereby improving the convenience of user use; the following is an explanation through specific embodiments:

[0040] The optical lens shading device of this embodiment includes:

[0041] Please also refer to Figure 3 and Figure 4 , a first cover plate 1, a second cover plate 2 parallel to and spaced from the first cover plate 1, a driving structure 3 provided on the first cover plate 1, and a plurality of light shielding plates 4 provided between the first cover plate 1 and the second cover plate 2; wherein the optical lens light shielding device defines a central axis 10 and a light-transmitting hole 20, the first cover plate 1 is provided with a plurality of first limiting grooves 11 evenly arranged around the central axis 10; the second cover plate 2 is provided with a plurality of second limiting grooves 21 evenly arranged around the central axis 10; the driving structure 3 is used to drive the first cover plate 1 to rotate around the central axis 10 ; The light shielding plate 4, the first limiting groove 11 and the second limiting groove 21 correspond one to one. The light shielding plate 4 is provided with a first axis 41 slidingly arranged in the first limiting groove 11 and a second axis 42 slidingly arranged in the second limiting groove 21. The light shielding plate 4 can rotate around the first axis 41 and the second axis 42 at the same time to open or close the light-transmitting hole 20; multiple light shielding plates 4 close the light-transmitting hole 20 when the first cover plate 1 rotates to the first position relative to the second cover plate 2, and multiple light shielding plates 4 open the light-transmitting hole 20 when the first cover plate 1 rotates to the second position relative to the second cover plate 2.

[0042] Here, it can be understood that the first cover plate 1 refers to one of the components of the optical lens shading device. The first cover plate 1 is in the shape of a plate-like structure. A light-transmitting hole 20 is provided on the first cover plate 1. The light-transmitting hole 20 is arranged based on the central axis 10. The light-transmitting hole 20 is coaxial with the central axis 10. In this embodiment, the central axis 10 is the optical axis of the optical lens. The first cover plate 1 is provided with a plurality of first limiting grooves 11. The plurality of first limiting grooves 11 are evenly arranged around the central axis 10, and the first limiting grooves 11 have a preset length.

[0043] The second cover plate 2 is a component of the optical lens shading device. The second cover plate 2 is a plate-like structure. A light-transmitting hole 20 is provided on the second cover plate 2. The light-transmitting hole 20 is arranged based on the central axis 10 and is coaxial with the central axis 10. In this embodiment, the central axis 10 is the optical axis of the optical lens. The second cover plate 2 is provided with a plurality of second limiting grooves 21. The plurality of second limiting grooves 21 are evenly arranged around the central axis 10 and have a preset length.

[0044] The driving structure 3 is a structure for driving the first cover plate 1 to rotate relative to the second cover plate 2. Specifically, the driving structure 3 is used to drive the first cover plate 1 to rotate relative to the second cover plate 2 around the central axis 10.

[0045] The light shielding plate 4 refers to a plate-like structure used to block light from entering the interior of the optical lens; a first shaft body 41 and a second shaft body 42 are provided on the light shielding plate 4, wherein the first shaft body 41 is slidably arranged in the first limiting groove 11, that is, the first shaft body 41 can move along the groove length direction of the first limiting groove 11; the second shaft body 42 is slidably arranged in the second limiting groove 21, that is, the second shaft body 42 can move along the groove length direction of the second limiting groove 21; when relative rotation occurs between the first cover plate 1 and the second cover plate 2, the groove wall of the first limiting groove 11 exerts a force on the first shaft body 41, and the groove wall of the second limiting groove 21 exerts a force on the second shaft body 42, and the first shaft body 41 and the second shaft body 42 are respectively subjected to the forces, thereby driving the light shielding plate 4 to rotate around the first shaft body 41 and the second shaft body 42 at the same time, thereby causing the light shielding plate 4 to deflect to open or close the light-transmitting hole 20, thereby realizing the protection function and light-shielding function of the optical lens.

[0046] The working principle of the optical lens shading device provided in this embodiment is as follows:

[0047] The user operates the driving structure 3 to make the first cover plate 1 rotate relative to the second cover plate 2 around the central axis 10. At the same time, the groove wall of the first limiting groove 11 applies a force on the first shaft body 41, and the groove wall of the second limiting groove 21 applies a force on the second shaft body 42. The first shaft body 41 and the second shaft body 42 are respectively subjected to forces, thereby driving the light shielding plate 4 to rotate around the first shaft body 41 and the second shaft body 42 at the same time, thereby causing the light shielding plate 4 to deflect to open or close the light-transmitting hole 20. When the first cover plate 1 rotates to the first position relative to the second cover plate 2, multiple light shielding plates 4 close the light-transmitting hole 20, that is, multiple light shielding plates 4 respectively block different areas of the light-transmitting hole 20, and multiple light shielding plates 4 are connected in sequence to jointly block the light-transmitting hole 20; when the first cover plate 1 rotates to the second position relative to the second cover plate 2, multiple light shielding plates 4 open the light-transmitting hole 20, thereby realizing the protection function and light-shielding function of the optical lens.

[0048] By adopting the above technical solution, the optical lens shading device can be integrated into the optical lens, and can be opened and closed manually or electrically, thereby avoiding loss and improving user convenience.

[0049] In one embodiment, the first axis 41 and the second axis 42 are arranged at intervals on the sunshade 4, and the first limiting groove 11 and the second limiting groove 21 are staggered, so that multiple sunshades 4 can rotate around the first axis 41 and the second axis 42 at the same time under the limitation of the groove walls of the first limiting groove 11 and the second limiting groove 21.

[0050] Here, it can be understood that the first limiting groove 11 and the second limiting groove 21 are staggered, so that the direction of the force applied by the first limiting groove 11 on the first axis 41 is different from the direction of the force applied by the second limiting groove 21 on the second axis 42. In this way, the sunshade 4 can rotate around the first axis 41 and the second axis 42 at the same time. At the same time, the first axis 41 can move along the groove length direction of the first limiting groove 11, and the second axis 42 can move along the groove length direction of the second limiting groove 21, so as to avoid the first axis 41 and the second axis 42 from getting stuck in the limiting grooves.

[0051] By adopting the above technical solution, the reliability of the light shielding plate 4 in opening and closing the light-transmitting hole 20 is ensured.

[0052] In one embodiment, the shading plate 4 includes a shading portion 43 and a connecting portion 44 connecting the shading portion 43 . The shading portion 43 is connected to the adjacent shading portion 43 when the shading plate 4 closes the light-transmitting hole 20 . The first shaft 41 and the second shaft 42 are located on the connecting portion 44 .

[0053] Here, it can be understood that the shading portion 43 refers to a structure for blocking light from entering the interior of the optical lens, and the connecting portion 44 refers to a structure for connecting the shading portion 43 with the first cover plate 1 and the second cover plate 2; the shading portion 43 is connected to the connecting portion 44, and the two can also be an integrally formed structure; the shading portion 43 is connected to the adjacent shading portion 43 when the shading plate 4 closes the light-transmitting hole 20, so as to avoid the formation of a large gap between the two adjacent shading portions 43, so that light enters the interior of the optical lens from the gap, affecting the shading effect.

[0054] By adopting the above technical solution, the shading effect of the shading plate 4 is improved.

[0055] In one embodiment, the cross-section of the light shielding portion 43 is triangular in shape.

[0056] Here, it can be understood that the multiple shading portions 43 are connected in pairs when the light-transmitting hole 20 is closed, and the shading portions 43 are set to a structure with a triangular cross-section. In this way, the multiple shading portions 43 can form an overall structure when they are connected in sequence, thereby expanding the area of ​​the light-transmitting hole 20 and reducing the possibility of gaps forming between two adjacent shading portions 43.

[0057] It needs to be further explained that when the number of shading plates 4 is six, the cross-section of each shading portion 43 is an equilateral triangle. When the shading plate 4 closes the light-transmitting hole 20, the six shading portions 43 are just connected in sequence and two adjacent shading portions 43 can be tightly attached to each other, reducing the possibility of a gap forming between the two shading portions 43.

[0058] By adopting the above technical solution, the shading effect of the shading plate 4 is further improved.

[0059] In one embodiment, the first shaft 41 is located at an edge of the connecting portion 44 , and the second shaft 42 is located in the middle of the connecting portion 44 .

[0060] Here, it can be understood that the shading portion 43 is the movable part of the shading plate 4, and the connecting portion 44 is the connecting portion 44 of the shading plate 4, wherein the first shaft body 41 is located at the edge of the connecting portion 44, and the second shaft body 42 is located in the middle of the connecting portion 44. In this way, the first shaft body 41 and the second shaft body 42 are respectively subjected to the forces of the first limiting groove 11 and the second limiting groove 21, so that the shading plate 4 rotates faster and smoother.

[0061] By adopting the above technical solution, the rotation flexibility of the shading plate 4 is improved.

[0062] In one embodiment, the number of the first limiting grooves 11 is six, eight or twelve, and the multiple first limiting grooves 11 are connected end to end. The number of the second limiting grooves 21 corresponds to the number of the first limiting grooves 11, and two adjacent second limiting grooves 21 are arranged at intervals.

[0063] Here, it can be understood that when the number of first limiting grooves 11 is six, multiple first limiting grooves 11 are connected end to end to form a hexagonal limiting groove; when the number of first limiting grooves 11 is eight, multiple first limiting grooves 11 are connected end to end to form an octagonal limiting groove; when the number of first limiting grooves 11 is twelve, multiple first limiting grooves 11 are connected end to end to form a dodecagonal limiting groove; the number of second limiting grooves 21 corresponds to the number of first limiting grooves 11. In addition, the number of light shielding plates 4 also corresponds to the number of first limiting grooves 11 and second limiting grooves 21.

[0064] By adopting the above technical solution, when the number of the first limiting grooves 11 is smaller, the number of the shading plates 4 is also smaller, so that the shading plates 4 are easily driven to rotate by the driving structure 3, saving the force required to open and close the light-transmitting hole 20, but each shading plate 4 occupies a large space; when the number of the first limiting grooves 11 is greater, the number of the shading plates 4 is also greater, so that the space required to be occupied by the shading plates 4 is smaller.

[0065] In one embodiment, the second limiting groove 21 extends from the middle of the corresponding first limiting groove 11 in a direction away from the first limiting groove 11 .

[0066] Here, it can be understood that the extension direction of the second limiting groove 21 is different from that of the first limiting groove 11, that is, the length directions of the two grooves are different. In this way, the directions of the forces applied to the second axis 42 and the first axis 41 by the second limiting groove 21 and the first limiting groove 11 respectively are different, so that the light shielding plate 4 can be deflected to open and close the light-transmitting hole 20.

[0067] By adopting the above technical solution, the rotation flexibility of the shading plate 4 is improved.

[0068] In one embodiment, the second cover plate 2 is provided with a receiving groove 22 for accommodating the first cover plate 1, and the groove wall of the receiving groove 22 in the circumferential direction is provided with a guide groove 23. The driving structure 3 passes through the guide groove 23 and is connected to the first cover plate 1. The driving structure 3 can move along the groove length direction of the guide groove 23.

[0069] Here, it can be understood that the first cover plate 1 is loosely fitted with the accommodating groove 22, and the first cover plate 1 can just rotate around the axis relative to the second cover plate 2; the guide groove 23 refers to a groove structure used to limit the movement of the driving structure 3, and the guide groove 23 is located on the groove wall in the circumferential direction of the accommodating groove 22. The driving structure 3 passes through the guide groove 23 and is connected to the first cover plate 1. The driving structure 3 moves along the groove length direction of the guide groove 23 under the limitation of the guide groove 23.

[0070] It needs to be further explained that the driving structure 3 can be a handle connected to the first cover plate 1 .

[0071] By adopting the above technical solution, the guide groove 23 defines the moving direction of the driving structure 3 , thereby improving the stability of the first cover plate 1 when rotating relative to the second cover plate 2 .

[0072] In one embodiment, the driving structure 3 is an electric driving structure 3 or a manual driving structure 3 .

[0073] Here, it can be understood that the electric drive structure 3 includes but is not limited to a motor, and the power output shaft of the electric drive structure 3 is transmission-connected to the first cover plate 1, for driving the first cover plate 1 to rotate around the central axis 10; the manual drive structure 3 includes but is not limited to a handle, and the user drives the handle to move, thereby driving the first cover plate 1 to rotate.

[0074] By adopting the above technical solution, the optical lens shading device has multiple driving modes and various operating modes.

[0075] In one embodiment, the optical lens shading device further includes a lens connector 5, which is configured to be detachably connected to the optical lens body. The lens connector 5 is coaxially connected to the second cover plate 2. The lens connector 5 is provided with a plurality of engaging grooves 51 for engaging with the engaging blocks of the optical lens body. The plurality of engaging grooves 51 are evenly arranged around the central axis 10. The lens connector 5 is docked with the optical lens body, and the engaging blocks are inserted into the engaging grooves 51 from the notches of the engaging grooves 51. The lens connector 5 is rotated to secure the engaging blocks in the engaging grooves 51. By adopting the above technical solution, the optical lens shading device is easy to assemble and disassemble.

[0076] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned optical lens shading device, wherein the optical lens shading device is arranged on the optical lens body.

[0077] By adopting the above technical solution, on the basis of having the advantages of the optical lens shading device of the above embodiment, the optical lens of this embodiment also has the advantage of convenient operation.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical lens shading device, characterized in that: include: A first cover plate (1), a second cover plate (2) spaced parallel to the first cover plate (1), a driving structure (3) provided on the first cover plate (1), and a plurality of shading plates (4) provided between the first cover plate (1) and the second cover plate (2); wherein the optical lens shading device is defined by a central axis (10) and a light-transmitting hole (20); the first cover plate (1) is provided with a plurality of first limiting grooves (11) uniformly arranged around the central axis (10); the second cover plate (2) is provided with a plurality of second limiting grooves (21) uniformly arranged around the central axis (10); the driving structure (3) is used to drive the first cover plate (1) to rotate around the central axis (10); the shading plates (4 ), the first limiting groove (11) and the second limiting groove (21) correspond one to one, the light shielding plate (4) is provided with a first shaft (41) slidably arranged in the first limiting groove (11) and a second shaft (42) slidably arranged in the second limiting groove (21), and the light shielding plate (4) can be rotated around the first shaft (41) and the second shaft (42) at the same time to open or close the light-transmitting hole (20); multiple light shielding plates (4) close the light-transmitting hole (20) when the first cover plate (1) rotates to the first position relative to the second cover plate (2), and multiple light shielding plates (4) open the light-transmitting hole (20) when the first cover plate (1) rotates to the second position relative to the second cover plate (2).

2. The optical lens shading device according to claim 1, wherein: The first shaft (41) and the second shaft (42) are arranged on the light shielding plate (4) at intervals, and the first limiting groove (11) and the second limiting groove (21) are staggered, so that a plurality of light shielding plates (4) can simultaneously rotate around the first shaft (41) and the second shaft (42) under the limitation of the groove walls of the first limiting groove (11) and the second limiting groove (21).

3. The optical lens shading device according to claim 2, wherein: The shading plate (4) comprises a shading portion (43) and a connecting portion (44) connected to the shading portion (43); the shading portion (43) is connected to the adjacent shading portion (43) when the shading plate (4) closes the light-transmitting hole (20); and the first shaft (41) and the second shaft (42) are located on the connecting portion (44).

4. The optical lens shading device according to claim 3, wherein: The cross section of the light shielding portion (43) is in the shape of a triangle.

5. The optical lens shading device according to claim 3, wherein: The first shaft (41) is located at the edge of the connecting portion (44), and the second shaft (42) is located in the middle of the connecting portion (44).

6. The optical lens shading device according to claim 1, wherein: The number of the first limiting grooves (11) is six, eight or twelve, and a plurality of the first limiting grooves (11) are connected end to end. The number of the second limiting grooves (21) corresponds to the number of the first limiting grooves (11), and two adjacent second limiting grooves (21) are arranged at intervals.

7. The optical lens shading device according to claim 6, wherein: The second limiting groove (21) extends from the middle of the corresponding first limiting groove (11) in a direction away from the first limiting groove (11).

8. The optical lens shading device according to any one of claims 1 to 7, wherein: The second cover plate (2) is provided with a receiving groove (22) for receiving the first cover plate (1); a guide groove (23) is provided on the groove wall of the receiving groove (22) in the circumferential direction; the driving structure (3) passes through the guide groove (23) and is connected to the first cover plate (1); the driving structure (3) is capable of moving along the groove length direction of the guide groove (23).

9. The optical lens shading device according to any one of claims 1 to 7, wherein: The driving structure (3) is an electric driving structure (3) or a manual driving structure (3).

10. An optical lens, characterized in that: It comprises an optical lens body and the optical lens shading device according to any one of claims 1 to 9, wherein the optical lens shading device is arranged on the optical lens body.

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