Optical lens and imaging device

Abstract

The utility model belongs to technical field of lens, disclose an optical lens and imaging device, this optical lens includes lens barrel subassembly, leak protection component, focusing group, first zoom group and second zoom group. Form the inner chamber in lens barrel subassembly, and the both ends of lens barrel subassembly are object plane side and image plane side respectively;Focusing group, first zoom group and second zoom group are coaxial and successively movably arranged in the inner chamber, and focusing group, first zoom group and second zoom group can move between short focus end position and long focus end position along the axial direction, and focusing group is close to object plane side;Leak protection component is set up in the inner wall of lens barrel subassembly, and leak protection component can be annularly set in the one end of focusing group towards object plane side when focusing group is located at long focus end position. The compact structure of this optical lens, the volume is smaller, and there is no light leakage phenomenon when group moves, and the imaging quality is higher.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to an optical lens and imaging device. Background Technology

[0002] Zoom cameras have wide applications in security fields such as smart transportation and facial recognition.

[0003] In integrated camera lens modules, the travel of the zoom group is typically proportional to the lens magnification. Conventional high-magnification lenses typically have only one zoom group. To meet the current market demand for high magnification, the zoom group travel is usually quite long. This traditional lens design results in a longer overall length, a larger lens size, and higher production costs. To maintain the lens magnification while also reducing the overall length and size, two or more zoom groups are often used instead of one. This allows the zoom group to achieve a greater magnification change within a shorter travel, thus meeting the design requirements of shorter overall length and smaller size for high-magnification lenses. In this case, the lens structure is relatively small in size, but with many internal moving groups, the first moving group at the front of the lens is highly susceptible to light leakage as it moves towards the rear of the lens (image plane), significantly impacting lens yield and image quality.

[0004] Therefore, there is an urgent need for an optical lens and imaging device to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, an optical lens is provided, which has a compact structure, small size, no light leakage when the group moves, and high imaging quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Optical lenses, including:

[0008] A lens barrel assembly having an internal cavity, wherein the two ends of the lens barrel assembly are the object plane side and the image plane side, respectively;

[0009] A focus group, a first zoom group, and a second zoom group are coaxially and sequentially movably disposed in the inner cavity. The focus group, the first zoom group, and the second zoom group are axially movable between a short focal length end position and a long focal length end position. The focus group is close to the object surface side.

[0010] A light leakage prevention component is disposed on the inner wall of the lens barrel assembly. The light leakage prevention component is able to be arranged around the end of the focusing group facing the object surface when the focusing group is located at the telephoto end position.

[0011] Optionally, the light leakage prevention assembly includes a first light leakage prevention baffle and a second light leakage prevention baffle. The lens barrel assembly has a light inlet on the object surface side. The diameter of the light inlet is smaller than the diameter of the inner cavity. The peripheral portion of the light inlet aperture extends axially inward to form the first light leakage prevention baffle and the second light leakage prevention baffle. When the focusing group moves to the telephoto end position, the first light leakage prevention baffle and the second light leakage prevention baffle are arranged around the periphery of the focusing group.

[0012] Optionally, the first light-leakage baffle is spaced apart from the inner wall of the lens barrel assembly, and the light-leakage baffle further includes a first reinforcing member, which is radially connected between the first light-leakage baffle and the inner wall of the lens barrel assembly; and / or,

[0013] The second light-leakage baffle is spaced apart from the inner wall of the lens barrel assembly. The light-leakage baffle also includes a second reinforcing member, which is radially connected to the second light-leakage baffle and the inner wall of the lens barrel assembly.

[0014] Optionally, multiple first reinforcing members are provided, and the multiple first reinforcing members are spaced apart circumferentially along the first light-blocking baffle; and / or,

[0015] The second reinforcing member is provided in multiple ways, and the multiple second reinforcing members are arranged at intervals along the circumference of the second light leakage baffle.

[0016] Optionally, it also includes a limiting member disposed between the first zoom group and the second zoom group. When the first zoom group and the second zoom group are in a preset position, the two ends of the limiting member respectively abut against the first zoom group and the second zoom group.

[0017] Optionally, the optical lens further includes a guide shaft assembly disposed axially within the lens barrel assembly, the guide shaft assembly being used to guide the movement of the focusing group, the first zoom group, and the second zoom group.

[0018] Optionally, the lens barrel assembly includes a first lens barrel and a second lens barrel coaxially connected, one end of the guide shaft assembly is connected to the first lens barrel, the other end of the guide shaft assembly is connected to the second lens barrel, and the focusing group, the first zoom group and the second zoom group are slidably connected to the guide shaft assembly.

[0019] Optionally, it also includes an aperture assembly, which is coaxially disposed between the focus group and the first zoom group.

[0020] Optionally, it also includes a driving component capable of driving the focus group, the first zoom group, and the second zoom group to move, respectively.

[0021] According to another aspect of the present invention, an imaging device is provided, comprising an imaging element and an optical lens as described in any of the preceding claims, wherein the imaging element is configured to receive an image formed by the optical lens.

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

[0023] In the optical lens provided by this utility model, the focusing group, the first zoom group, and the second zoom group are all housed within the inner cavity of the lens barrel assembly. The lens barrel assembly isolates the lens group from the outside environment, thus protecting the lens group. Furthermore, both the focusing group, the first zoom group, and the second zoom group are movable groups. This allows for greater magnification changes within a relatively short travel distance, meeting the requirements of a high-magnification lens. The overall length of the optical lens is significantly shorter than that of traditional lenses, and the absence of fixed groups makes the optical lens structure more compact and its size smaller.

[0024] Furthermore, the inner wall of the lens barrel assembly is also provided with a light leakage prevention component. When the focusing group is located at the telephoto end, the light leakage prevention component is arranged around the end of the focusing group facing the object plane to prevent light from entering the optical lens from the object plane side of the focusing group and thus generating stray light on the image plane side of the optical lens, thereby ensuring the imaging quality of the optical lens. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of the optical lens provided in this embodiment of the present invention when the focusing group, the first zoom group, and the second zoom group are at the short focal length end position;

[0027] Figure 2 This is a cross-sectional view of the optical lens provided in this embodiment of the present invention when the focusing group, the first zoom group, and the second zoom group are at the telephoto end position;

[0028] Figure 3 This is a schematic diagram of the structure of the first lens barrel provided in an embodiment of the present invention from one viewing angle;

[0029] Figure 4 This is a schematic diagram of the structure of the first lens barrel provided in an embodiment of the present invention from another perspective;

[0030] Figure 5 This is a cross-sectional view of the first lens barrel provided in this embodiment of the present invention;

[0031] Figure 6 This is a cross-sectional view of the first zoom group, the second zoom group, and the limiting member assembled according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure after the first zoom group has been moved relative to the second zoom group according to an embodiment of the present invention;

[0033] Figure 8 This is a partial structural schematic diagram of the optical lens provided in an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Lens tube assembly; 11. First lens tube; 111. First mounting hole; 112. Second mounting hole; 113. Third mounting hole; 114. Light inlet; 12. Second lens tube;

[0036] 2. Focus on groups;

[0037] 3. First variable multiplication group;

[0038] 4. Second variable-multiplication group;

[0039] 51. First light-leakage baffle; 52. Second light-leakage baffle; 53. First reinforcing member; 54. Second reinforcing member;

[0040] 6. Limiting components;

[0041] 71. First guide shaft; 72. Second guide shaft; 73. Third guide shaft;

[0042] 8. Aperture assembly;

[0043] 9. Tailgate assembly. Detailed Implementation

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0052] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0053] This embodiment provides an optical lens, such as Figure 1 and Figure 2 As shown, the optical lens includes a lens barrel assembly 1, a focusing group 2, a first zoom group 3, a second zoom group 4, and a light leakage prevention assembly.

[0054] The lens barrel assembly 1 has an internal cavity, with its two ends being the object plane side and the image plane side, respectively. Focusing group 2, first zoom group 3, and second zoom group 4 are coaxially and sequentially movably disposed within the internal cavity of the lens barrel assembly 1. Focusing group 2, first zoom group 3, and second zoom group 4 are axially movable between a short focal length end position and a long focal length end position, with focusing group 2 closer to the object plane side and second zoom group 4 closer to the image plane side.

[0055] In other words, the lens barrel assembly 1 can isolate the lens group (i.e., focusing group 2, first zoom group 3, and second zoom group 4) of the optical lens from the outside world to protect the lens group. At the same time, focusing group 2, first zoom group 3, and second zoom group 4 are all movable groups. In this case, a larger magnification change can be achieved within a relatively short travel range to meet the needs of a high-magnification lens. The overall length of the optical lens is much shorter than that of a traditional lens, and there is no fixed locking of the groups, making the structure of the optical lens more compact and the size smaller.

[0056] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the optical lens also includes a guide shaft assembly. The guide shaft assembly is axially disposed within the lens barrel assembly 1. The guide shaft assembly is used to guide the movement of the focusing group 2, the first zoom group 3, and the second zoom group 4 to ensure the coaxiality of the focusing group 2, the first zoom group 3, and the second zoom group 4 during movement, thereby ensuring the imaging quality of the optical lens.

[0057] More specifically, the lens barrel assembly 1 includes a first lens barrel 11 and a second lens barrel 12 coaxially connected. One end of the guide shaft assembly is connected to the first lens barrel 11, and the other end of the guide shaft assembly is connected to the second lens barrel 12. The focusing group 2, the first zoom group 3, and the second zoom group 4 are slidably connected to the guide shaft assembly. The first lens barrel 11 and the second lens barrel 12 are fastened together and secured with screws to improve the structural integrity of the assembled lens barrel assembly 1.

[0058] In this embodiment, the guide shaft assembly includes a first guide shaft 71, a second guide shaft 72, and a third guide shaft 73. The first lens barrel 11 and the second lens barrel 12 have corresponding first fixing holes 111, second fixing holes 112, and third fixing holes 113 on opposite sides for fixing the first guide shaft 71, the second guide shaft 72, and the third guide shaft 73. The first guide shaft 71, the second guide shaft 72, and the third guide shaft 73 are all parallel to the axial direction of the lens barrel assembly 1. The focusing group 2 includes a first lens frame and a focusing lens group. The focusing lens group is mounted on the first lens frame, and both ends of the first lens frame are slidably connected to the first guide shaft 71 and the second guide shaft 72, respectively. The first zoom group 3 includes a second lens frame and a first zoom lens group. The first zoom lens group is mounted on the second lens frame, and both ends of the second lens frame are slidably connected to the first guide shaft 71 and the second guide shaft 72, respectively. The second zoom group 4 includes a third lens frame and a second zoom lens group. The second zoom lens group is mounted on the third lens frame, and the two ends of the third lens frame are slidably connected to the first guide shaft 71 and the third guide shaft 73, respectively.

[0059] More specifically, the optical lens also includes a driving assembly (not shown), which can drive the focus group 2, the first zoom group 3, and the second zoom group 4 to move respectively. The structure and driving principle of the driving assembly are existing technologies and will not be described in detail here.

[0060] Furthermore, the inner wall of the lens barrel assembly 1 is also provided with a light leakage prevention component. The light leakage prevention component can be arranged around the end of the focusing group 2 facing the object plane when the focusing group 2 is in the telephoto end position, so as to prevent light from entering the optical lens from the object plane side of the focusing group 2 and thus generating stray light on the image plane side of the optical lens, thereby ensuring the imaging quality of the optical lens.

[0061] Specifically, refer to Figures 2-5The light leakage prevention assembly includes a first light leakage prevention baffle 51 and a second light leakage prevention baffle 52. The lens barrel assembly 1 has a light inlet 114 on the object plane side. Light from the scene enters the optical lens through the light inlet 114 and sequentially passes through the focusing group 2, the first zoom group 3, and the second zoom group 4 to form a clear image. The diameter of the light inlet 114 is smaller than the diameter of the inner cavity. The peripheral portion of the opening of the light inlet 114 extends axially inward to form the first light leakage prevention baffle 51 and the second light leakage prevention baffle 52. When the focusing group 2 moves to the telephoto end position, the first light leakage prevention baffle 51 and the second light leakage prevention baffle 52 are arranged around the periphery of the focusing group 2 to prevent light leakage from the object plane side of the optical lens into the image plane side of the optical lens, thus preventing stray light.

[0062] In this embodiment, both the first light leakage baffle 51 and the second light leakage baffle 52 are arc-shaped plates. The first light leakage baffle 51 and the second light leakage baffle 52 are located on opposite sides of the focusing group 2 in the circumferential direction, and their centers coincide with the axis of the focusing group 2. The first light leakage baffle 51 and the second light leakage baffle 52 can block the gap between the periphery of the focusing group 2 and the inner wall of the lens barrel assembly 1 when the focusing group 2 moves, preventing light from the object plane side from entering the optical lens from the periphery of the focusing group 2. In this embodiment, the first light leakage baffle 51 and the second light leakage baffle 52 are not complete arcs. The gap between the first light leakage baffle 51 and the second light leakage baffle 52 is used to avoid interference with the guide shaft assembly inside the optical lens, thus ensuring smooth movement of the focusing group 2.

[0063] More specifically, the first light leakage baffle 51 is spaced from the inner wall of the lens barrel assembly 1. The light leakage baffle assembly also includes a first reinforcing member 53, which is radially connected between the first light leakage baffle 51 and the inner wall of the lens barrel assembly 1. Correspondingly, the second light leakage baffle 52 is spaced from the inner wall of the lens barrel assembly 1. The light leakage baffle assembly also includes a second reinforcing member 54, which is radially connected between the second light leakage baffle 52 and the inner wall of the lens barrel assembly 1. Through the first reinforcing member 53 and the second reinforcing member 54, the molding strength of the first light leakage baffle 51 and the second light leakage baffle 52 can be guaranteed, preventing the first light leakage baffle 51 and the second light leakage baffle 52 from collapsing and deforming during molding, thereby affecting the operation of the focusing group 2.

[0064] More specifically, multiple first reinforcing members 53 are provided, and these multiple first reinforcing members 53 are spaced apart circumferentially along the first light leakage barrier 51. Correspondingly, multiple second reinforcing members 54 are provided, and these multiple second reinforcing members 54 are spaced apart circumferentially along the second light leakage barrier 52. By providing multiple first reinforcing members 53 and multiple second reinforcing members 54, the forces on the first light leakage barrier 51 and the second light leakage barrier 52 can be balanced, further ensuring the molding strength of the first light leakage barrier 51 and the second light leakage barrier 52.

[0065] Optionally, such as Figures 6-8 As shown, the optical lens also includes a limiting member 6. The limiting member 6 is disposed between the first zoom group 3 and the second zoom group 4. When the first zoom group 3 and the second zoom group 4 are in a preset position, both ends of the limiting member 6 abut against the first zoom group 3 and the second zoom group 4, respectively. Specifically, the limiting member 6 is plate-shaped and is disposed on the third lens frame of the second zoom group 4, and can move with the second zoom group 4. When the second zoom group 4 moves to the point where the other end of the limiting member 6 abuts against the second lens frame of the first zoom group 3, the first zoom group 3 and the second zoom group 4 are in a preset position. This preset position represents the minimum safe distance between the first zoom group 3 and the second zoom group 4 to prevent them from colliding. The aforementioned preset position needs to be determined based on the actual shape of the first zoom group 3 and the second zoom group 4, and is not limited here.

[0066] Optionally, refer to Figure 1 and Figure 2 The optical lens also includes an aperture assembly 8. The aperture assembly 8 is coaxially disposed between the focusing group 2 and the first zoom group 3, so that the first zoom group 3 can be moved on the optical axis to focus, thereby improving image sharpness.

[0067] Alternatively, the optical lens may also include a tail plate assembly 9. The tail plate assembly 9 is located at the end of the second lens barrel 12 away from the first lens barrel 11. The tail plate assembly 9 mainly serves to support and fix the internal structure of the optical lens, ensuring that the optical lens remains stable during zooming, focusing, and other operations.

[0068] When assembling the optical lens provided in this embodiment, the first guide shaft 71 and the second guide shaft 72 are firstly inserted into the first fixing hole 111 and the second fixing hole 112 of the first lens barrel 11 in sequence (the order is not important); then the focusing group 2 and the first zoom group 3 are inserted in sequence along their respective through guide shafts, and then the third guide shaft 73 is inserted into the third fixing hole 113 of the first lens barrel 11; then the second zoom group 4 is inserted (the limiting member 6 on the second zoom group 4 will protect the group during insertion to prevent the optical lenses on the second zoom group 4 from touching the optical lenses on the first zoom group 3), then the second lens barrel 12 is inserted and the first lens barrel 11 and the second lens barrel 12 are secured with screws, and then the drive assembly (including the aperture assembly 8) is inserted and secured. At this point, the optical lens is almost finished and can be directly inspected with the help of an inspection fixture (to prevent defective products generated during assembly from flowing into the next assembly step, improve efficiency, and shorten the rework cycle). After inspection and confirmation, the tail plate assembly 9 is installed and secured with screws to complete the entire optical lens assembly.

[0069] This embodiment also provides an imaging device, which includes an imaging element and an optical lens provided in this embodiment. The imaging element is configured to receive an image formed by the optical lens.

[0070] In this embodiment, the imaging element (also known as an image sensor) is a semiconductor chip with hundreds of thousands to millions of photodiodes on its surface, which generate charges when exposed to light.

[0071] Optical lenses primarily utilize the refraction principle of lenses to create images. Light from a scene passes through the optical lens, forming a clear image on the focal plane, which is then recorded by an imaging element located on the focal plane. These optical lenses can be, but are not limited to, industrial lenses.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An optical lens, characterized in that, include: The lens barrel assembly (1) has an inner cavity formed inside it, and the two ends of the lens barrel assembly (1) are the object plane side and the image plane side, respectively. A focusing group (2), a first zoom group (3), and a second zoom group (4) are coaxially and movably disposed in the inner cavity. The focusing group (2), the first zoom group (3), and the second zoom group (4) are movable along the axial direction between the short focal length end position and the long focal length end position. The focusing group (2) is close to the object surface side. A light leakage prevention component is disposed on the inner wall of the lens barrel assembly (1). The light leakage prevention component is able to be arranged around the end of the focusing group (2) facing the object surface when the focusing group (2) is located at the telephoto end position.

2. The optical lens according to claim 1, characterized in that, The light leakage prevention assembly includes a first light leakage prevention baffle (51) and a second light leakage prevention baffle (52). The lens barrel assembly (1) has a light inlet (114) on the object surface side. The diameter of the light inlet (114) is smaller than the diameter of the inner cavity. The peripheral part of the light inlet (114) extends axially inward to form the first light leakage prevention baffle (51) and the second light leakage prevention baffle (52). The focusing group (2) moves to the telephoto end position. The first light leakage prevention baffle (51) and the second light leakage prevention baffle (52) are arranged around the periphery of the focusing group (2).

3. The optical lens according to claim 2, characterized in that, The first light-leakage baffle (51) is spaced from the inner wall of the lens barrel assembly (1), and the light-leakage baffle further includes a first reinforcing member (53), which is radially connected between the first light-leakage baffle (51) and the inner wall of the lens barrel assembly (1); and / or, The second light-blocking baffle (52) is spaced apart from the inner wall of the lens barrel assembly (1). The light-blocking assembly also includes a second reinforcing member (54), which is radially connected to the second light-blocking baffle (52) and the inner wall of the lens barrel assembly (1).

4. The optical lens according to claim 3, characterized in that, The first reinforcing member (53) is provided in multiple forms, and the multiple first reinforcing members (53) are arranged at circumferential intervals along the first light leakage baffle (51); and / or, The second reinforcing member (54) is provided in multiple ways, and the multiple second reinforcing members (54) are arranged at intervals along the circumference of the second light leakage baffle (52).

5. The optical lens according to claim 1, characterized in that, It also includes a limiting member (6), which is disposed between the first zoom group (3) and the second zoom group (4). When the first zoom group (3) and the second zoom group (4) are in a preset position, the two ends of the limiting member (6) abut against the first zoom group (3) and the second zoom group (4) respectively.

6. The optical lens according to claim 1, characterized in that, The optical lens also includes a guide shaft assembly, which is axially disposed within the lens barrel assembly (1) and is used to guide the movement of the focusing group (2), the first zoom group (3) and the second zoom group (4).

7. The optical lens according to claim 6, characterized in that, The lens barrel assembly (1) includes a first lens barrel (11) and a second lens barrel (12) coaxially connected. One end of the guide shaft assembly is connected to the first lens barrel (11), and the other end of the guide shaft assembly is connected to the second lens barrel (12). The focusing group (2), the first zoom group (3), and the second zoom group (4) are slidably connected to the guide shaft assembly.

8. The optical lens according to claim 1, characterized in that, It also includes an aperture assembly (8), which is coaxially disposed between the focus group (2) and the first zoom group (3).

9. The optical lens according to any one of claims 1-8, characterized in that, It also includes a driving component that can drive the focus group (2), the first zoom group (3) and the second zoom group (4) to move respectively.

10. An imaging device, characterized in that, It includes an imaging element and an optical lens as described in any one of claims 1-9, wherein the imaging element is configured to receive an image formed by the optical lens.

Images