Angle adjusting mechanism

Abstract

The utility model provides an angle adjusting mechanism, the angle adjusting mechanism is used for adjusting the posture of an optical lens, the angle adjusting mechanism sleeves the outer side of the optical lens, the optical lens is provided with a diaphragm, the angle adjusting mechanism comprises a mounting seat and an adjusting assembly, and the surface of one side of the mounting seat is provided with a first arc-shaped surface; the adjusting assembly is movably connected with the mounting seat and is provided with a second arc-shaped surface matched with the first arc-shaped surface, the curvature of the first arc-shaped surface is the same as that of the second arc-shaped surface, and when the second arc-shaped surface moves along the first arc-shaped surface, the adjusting assembly drives the optical lens to rotate around the center of the diaphragm. According to the utility model, the problem that the posture of the lens cannot be adjusted by taking the far-end diaphragm as a rotation center in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of lens angle adjustment, and more specifically, to an angle adjustment mechanism. Background Technology

[0002] Most goniometers on the market currently use cross roller guides for angle adjustment. The rotation center is fixed and cannot be changed. It is impossible to adjust the rotation center using the aperture inside the lens. After adjustment, it is locked by the friction of the side-tightening screw, which provides limited clamping force. It is very easy to loosen in a vibrating environment and cannot achieve long-term stability. Utility Model Content

[0003] The main objective of this invention is to provide an angle adjustment mechanism to solve the problem in the prior art that the lens attitude cannot be adjusted with the far-end aperture as the rotation center.

[0004] To achieve the above objectives, according to one aspect of the present invention, an angle adjustment mechanism is provided. The angle adjustment mechanism is used to adjust the attitude of an optical lens. The angle adjustment mechanism is sleeved on the outside of the optical lens, which has an aperture stop. The angle adjustment mechanism includes a mounting base and an adjustment component. One side surface of the mounting base has a first arcuate surface. The adjustment component is movably connected to the mounting base and has a second arcuate surface that cooperates with the first arcuate surface. The curvature of the first arcuate surface and the second arcuate surface are the same. When the second arcuate surface moves along the first arcuate surface, the adjustment component drives the optical lens to rotate around the center of the aperture stop.

[0005] Furthermore, both the first and second arcuate surfaces are spherical.

[0006] Furthermore, the cross-section of the first arc surface in the first direction is a first circular arc, and the second arc surface moves along the extension direction of the first circular arc so that the adjustment component rotates around the first axis, and the center of the aperture is located on the first axis.

[0007] Further, the adjustment assembly includes: a first adjustment member and a second adjustment member. The first adjustment member is movably connected to the mounting base, and the side of the first adjustment member facing the mounting base has a second arc-shaped surface, and the side of the first adjustment member away from the mounting base has a third arc-shaped surface. The cross-section of the third arc-shaped surface in the second direction is a second circular arc. The second adjustment member is located on the side of the first adjustment member away from the mounting base, and the second adjustment member has a fourth arc-shaped surface that mates with the third arc-shaped surface. When the fourth arc-shaped surface moves along the third arc-shaped surface, it causes the second adjustment member to rotate around the second axis, and the center of the aperture is located on the second axis. The first direction is perpendicular to the second direction, and the first axis is perpendicular to the second axis.

[0008] Furthermore, the radii of the first arc and the second arc are different.

[0009] Furthermore, the first adjustment member has an elongated hole that avoids the movement path of the optical lens, and the length direction of the elongated hole is parallel to the first axis.

[0010] Furthermore, the angle adjustment mechanism also includes an adjustment component, which is movably connected to the mounting base, and has a contact surface that abuts against the adjustment component, and the adjustment component can push the adjustment component to move along the first arc surface.

[0011] Further, the adjustment assembly includes a first adjustment member and a second adjustment member. The first adjustment member has a third arc-shaped surface on the side opposite to the mounting base. The cross-section of the third arc-shaped surface in the second direction is a second circular arc, and the cross-section of the first arc-shaped surface in the first direction is a first circular arc. The first direction is perpendicular to the second direction. The abutment surface includes a first abutment surface and a second abutment surface. The adjustment assembly includes at least two first adjustment members and at least two second adjustment members. The first adjustment members are movably connected to the mounting base, and the two first adjustment members are located on opposite sides of the mounting base. The first adjustment member has a first abutment surface that abuts against the first adjustment member. The first adjustment member can push the adjustment assembly to move along the first arc-shaped surface. The second adjustment member is movably connected to the mounting base, and the two second adjustment members are located on opposite sides of the mounting base. The second adjustment member has a second abutment surface that abuts against the second adjustment member. The second adjustment member can push the second adjustment member to rotate along the third arc-shaped surface.

[0012] Furthermore, at least two first adjusting members are arranged perpendicular to the first direction, and at least two second adjusting members are arranged perpendicular to the second direction.

[0013] Furthermore, the first adjusting member has multiple first fastening holes that penetrate the second arcuate surface, and the second adjusting member has multiple second fastening holes that penetrate the fourth arcuate surface. The angle adjustment mechanism also includes: multiple first fastening components, a portion of which passes through the first fastening holes and is connected to the mounting base; and multiple second fastening components, a portion of which passes through the second fastening holes and is connected to the first adjusting member.

[0014] Furthermore, the first fastening assembly includes a first fastener and a first washer, the first fastener passing through a first fastening hole and connected to the mounting base, and the first washer being disposed between the first fastener and the first adjusting member; the second fastening assembly includes a second fastener and a second washer, the second fastener passing through a second fastening hole and connected to the first adjusting member, and the second washer being disposed between the second fastener and the second adjusting member.

[0015] By applying the technical solution of this utility model, the mounting base has a first arc-shaped surface and the adjustment component has a second arc-shaped surface, and the curvature of the first and second arc-shaped surfaces is consistent. This allows the second arc-shaped surface to move along the curvature direction of the first arc-shaped surface, thereby driving the optical lens to rotate around the center of the aperture stop. Specifically, along the rotation direction of the adjustment component, the curvature of the first and second arc-shaped surfaces in this embodiment is consistent and remains unchanged. That is, the arc curves formed along the curvature directions of the first and second arc-shaped surfaces are both circular arcs. This allows the first arc-shaped surface to maintain close contact with the second arc-shaped surface when it moves along the curvature direction of the second arc-shaped surface. This allows the adjustment component to drive the optical lens to rotate and rotate around the center of the aperture stop, thereby allowing the lens to adjust its posture while keeping the aperture stop position unchanged. This avoids the problems of optical path offset and image quality degradation, and improves the alignment accuracy and flexibility of the optical system. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the optical lens angle adjustment mechanism for horizontal use according to Embodiment 1 of this utility model is shown.

[0018] Figure 2 A schematic diagram of the angle adjustment mechanism for vertical use of the optical lens in Embodiment 1 is shown;

[0019] Figure 3 A schematic diagram of the structure of the first adjusting member and the mounting base in Embodiment 1 is shown;

[0020] Figure 4 A schematic diagram of the structure of the second adjusting member and the first adjusting member in Embodiment 1 is shown;

[0021] Figure 5 A schematic diagram of the structure of the first fastener and the first washer of Embodiment 1 is shown;

[0022] Figure 6 A schematic diagram of the movable plate in Embodiment 1 is shown;

[0023] Figure 7 Example 1 is shown. Figure 6 Another structural diagram from a different angle;

[0024] Figure 8 A schematic diagram of the adjustment component of Embodiment 1 is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Mounting base; 11. Mounting base; 111. Mounting part; 112. Extending arm; 12. Mating seat; 20. Adjustment assembly; 21. First adjustment component; 211. Movable plate; 2111. Second arc-shaped surface; 2112. Middle arc-shaped surface; 2113. Side arc-shaped surface; 2114. Abutment area; 2115. First fastening hole; 212. Fixing plate; 213. Oblong hole; 22. Second adjustment component; 30. Adjustment assembly; 31. First adjustment component; 311. Abutment surface; 32. Second adjustment component; 40. First fastening assembly; 41. First fastener; 42. First gasket; 50. Second fastening assembly; 51. Second fastener; 52. Second gasket; 60. Side push screw; 70. Guide component; 80. Optical lens; 81. Aperture. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] To address the problem in existing technologies that the lens attitude cannot be adjusted using the far-end aperture as the rotation center, this invention provides an angle adjustment mechanism.

[0031] Example 1

[0032] like Figures 1 to 8An angle adjustment mechanism is shown, which is used to adjust the posture of an optical lens 80. The angle adjustment mechanism is sleeved on the outside of the optical lens 80, which has an aperture stop 81. The angle adjustment mechanism includes a mounting base 10 and an adjustment component 20. One side surface of the mounting base 10 has a first arcuate surface. The adjustment component 20 is movably connected to the mounting base 10 and has a second arcuate surface 2111 that cooperates with the first arcuate surface. The curvature of the first arcuate surface and the second arcuate surface 2111 are the same. When the second arcuate surface 2111 moves along the first arcuate surface, the adjustment component 20 drives the optical lens 80 to rotate around the center of the aperture stop 81.

[0033] In this embodiment, the mounting base 10 has a first arc-shaped surface and the adjustment component 20 has a second arc-shaped surface 2111, with the curvature of the first and second arc-shaped surfaces 2111 being consistent. This allows the second arc-shaped surface 2111 to move along the curvature direction of the first arc-shaped surface, thereby causing the optical lens 80 to rotate around the center of the aperture stop 81. Specifically, along the rotation direction of the adjustment component 20, the curvature of the first and second arc-shaped surfaces 2111 in this embodiment is consistent and remains unchanged. That is, along the curvature direction of the first and second arc-shaped surfaces... The curved curves formed by the bending direction of the arc surface 2111 are all circular arcs, so that when the first arc surface moves along the bending direction of the second arc surface 2111, it can maintain a close fit with the second arc surface 2111. This allows the adjustment component 20 to drive the optical lens 80 to rotate and rotate the optical lens 80 around the center of the aperture stop 81. This allows the lens to adjust its posture while keeping the position of the aperture stop 81 unchanged, thereby avoiding the problems of optical path offset and image quality degradation, and thus improving the accuracy and flexibility of the optical lens 80 alignment.

[0034] It should be noted that different types of optical lenses 80 have different distances from the center of the adjustment component 20 to the center of the aperture 81. Therefore, the curvatures of the first and second arc surfaces 2111 are also different. These can be adjusted according to the actual situation, such as the position of the angle adjustment mechanism on the optical lens 80. The curvatures of the third arc surface are adjusted in the same way, ensuring that the rotation center of the optical lens 80 coincides with the center of the aperture 81. In other words, the optical lens 80 swings around the center of the aperture 81, and the center position of the aperture 81 remains unchanged during the angle adjustment process. The center of the aperture 81 is the intersection point of the plane containing the aperture 81 and the optical axis of the optical lens 80.

[0035] like Figure 3As shown, in this embodiment, the cross-section of the first arc surface in the first direction is a first circular arc, and the second arc surface 2111 moves along the extension direction of the first circular arc to make the adjustment component 20 rotate around the first axis. The center of the aperture 81 is located on the first axis, so that the optical lens 80 rotates around the center of the aperture 81. Specifically, the shapes of the first arc surface and the second arc surface 2111 in this embodiment can both be regarded as part of the side surface of a cylinder. The first direction is the extension direction of the central axis of the first arc surface and the second arc surface 2111, which is also the extension direction of the first axis. The cross-section of the first arc surface in the first direction is the cross-section perpendicular to the first direction. When the adjustment component 20 moves along the extension direction of the first circular arc, the precise fit between the second arc surface 2111 and the first arc surface guides and restricts the movement trajectory of the adjustment component 20, so that the adjustment component 20 drives the optical lens 80 to rotate around the center of the aperture 81. During this movement, the center of the aperture 81 remains unchanged, thereby realizing the coupling-free and gapless adjustment of the orientation of the optical lens 80. Optionally, the first axis is a straight line passing through the center of the aperture 81 and perpendicular to the optical axis.

[0036] In this embodiment, the adjustment assembly 20 includes a first adjustment member 21 and a second adjustment member 22. The first adjustment member 21 is movably connected to the mounting base 10, and the side of the first adjustment member 21 facing the mounting base 10 has a second arc-shaped surface 2111, and the side of the first adjustment member 21 facing away from the mounting base 10 has a third arc-shaped surface, such as... Figure 4As shown, the cross-section of the third arc-shaped surface in the second direction is a second circular arc; the second adjustment member 22 is located on the side of the first adjustment member 21 away from the mounting base 10. The second adjustment member 22 has a fourth arc-shaped surface that mates with the third arc-shaped surface. When the fourth arc-shaped surface moves along the third arc-shaped surface, it causes the second adjustment member 22 to rotate around the second axis, and the center of the aperture 81 is located on the second axis. The first direction is perpendicular to the second direction, and the first axis is perpendicular to the second axis. Thus, the first adjustment member 21 can drive the second adjustment member 22 and the optical lens 80 to move around the first axis, and the second adjustment member 22 can drive the optical lens 80 to move around the second axis. The first axis and the second axis are perpendicularly set, allowing the optical lens 80 to rotate around the center of the aperture 81. Preferably, the first and second directions are perpendicular to each other to ensure the optimal movement path of the first adjustment member 21 and the second adjustment member 22. Of course, depending on the actual situation, the first and second directions can also be set at other angles, as long as it ensures that both the first adjustment member 21 and the second adjustment member 22 can drive the optical lens 80 to rotate around the center of the aperture 81. It should be noted that the second direction is the extension direction of the rotation axis of the second adjusting member 22, and the cross-section of the third arc-shaped surface in the second direction refers to the cross-section of the third arc-shaped surface perpendicular to the second direction. In this embodiment, since the distances of the first adjusting member 21 and the second adjusting member 22 from the center of the aperture 81 are different, the radii of the first arc and the second arc are set to be different.

[0037] In this embodiment, the mounting base 10 serves as the fixed end of the entire angle adjustment mechanism and can be integrally formed or separately formed. In this embodiment, the mounting base 10 includes a mounting base 11 and a mating seat 12. The mounting base 11 is a rectangular plate shape used to mount the angle adjustment mechanism in a fixed position. The mating seat 12 is connected to the mounting base 11 along the axial direction of the optical lens 80. The mounting base 11 includes a mounting portion 111, which can be located at the edge of the mounting base 11 for connection with external components, depending on the actual situation. Figure 1 , Figure 2 As shown, the optical lens 80 can be used horizontally or vertically; the mounting base 11 can be replaced accordingly. For special applications, the mounting base 11 of the mounting bracket 10 can be redesigned to achieve installation at any angle. The surface of the mating seat 12 away from the mounting base 11 has a first arc-shaped surface. This first arc-shaped surface can be a continuous arc surface with identical curvature, or it can be multiple arc surfaces with different curvatures but whose central axes are on the same axis, similar to... Figure 7 The setting of the second arc-shaped surface 2111. For example... Figure 7As shown, the second arc-shaped surface 2111 has a central arc-shaped surface 2112 and two side arc-shaped surfaces 2113. The arc protrusion directions of the central arc-shaped surface 2112 and the two side arc-shaped surfaces 2113 are all facing away from the first arc-shaped surface. The two side arc-shaped surfaces 2113 are located on opposite sides of the central arc-shaped surface 2112. The central arc-shaped surface 2112 is closer to the center of the aperture 81 than the side arc-shaped surfaces 2113. The intersection of the central arc-shaped surface 2112 and the side arc-shaped surfaces 2113 forms an arc-shaped step, called the second arc-shaped step. The central axes of the central arc-shaped surface 2112 and the side arc-shaped surfaces 2113 coincide and pass through the center of the aperture 81. Correspondingly, the mating seat 12 is provided with a first arc-shaped surface that fits against the second arc-shaped surface 2111. The first arc-shaped surface can also be configured with a similar structure to the second arc-shaped surface 2111 so that the first arc-shaped surface and the second arc-shaped surface 2111 can fit tightly together. The first arc-shaped surface includes a central arc-shaped surface and two side arc-shaped surfaces. The central arc-shaped surface fits into the middle arc-shaped surface 2112, and the side arc-shaped surfaces fit into the side arc-shaped surfaces 2113. The arc-shaped protrusion direction of the central arc-shaped surface and the side arc-shaped surfaces is consistent with the arc-shaped protrusion direction of the second arc-shaped surface 2111. The central arc-shaped surface is closer to the center of the aperture 81 than the side arc-shaped surfaces. The central arc-shaped surface also forms an arc-shaped step with the side arc-shaped surfaces, which is called the first arc-shaped step, so that it can fit precisely with the first arc-shaped surface. In this way, an arc-shaped concave portion is formed at the center arc-shaped surface of the first arc-shaped surface, and an arc-shaped protrusion is formed at the middle arc-shaped surface 2112 of the second arc-shaped surface 2111. Two opposite edges of the arc-shaped concave portion are connected to the edge of the mating seat 12 to facilitate the movement of the first adjusting member 21. The other two opposite edges are close to the first arc-shaped step. The arc-shaped concave portion can serve as a slide rail, and the arc-shaped protrusion can serve as a slider, so that the first adjusting member 21 can move along the extension direction of the arc-shaped step to drive the optical lens 80 to move.

[0038] Preferably, the arc-shaped recess can be configured as a dovetail-shaped recess, that is, the inner walls of the two sides of the arc-shaped recess near the first arc-shaped step are not perpendicular to the central arc-shaped surface of the mating seat 12, but form an acute angle with the central arc-shaped surface. Correspondingly, the arc-shaped protrusion can be configured as a dovetail-shaped protrusion, that is, the two sides of the arc-shaped protrusion that mate with the inner walls of the two sides of the arc-shaped recess form an acute angle with the side arc-shaped surface 2113 of the second arc-shaped surface 2111. In this way, the dovetail-shaped protrusion can be embedded in the dovetail-shaped recess, thereby achieving a guiding function, while preventing the arc-shaped protrusion from coming out of the arc-shaped recess radially along the second arc-shaped surface 2111 when the first adjusting member 21 moves along the direction of the arc-shaped step.

[0039] Preferably, a guide 70 can be provided at the edge of the arc-shaped concave portion, i.e., at the position of the arc-shaped concave portion near the first arc-shaped step. The guide 70 can be a guide strip to ensure a tight fit between the arc-shaped protrusion and the arc-shaped concave portion, reduce gaps and shaking during movement, and at the same time ensure that the first adjusting member 21 and the mounting base 10 will not be displaced due to external force or vibration in the locked state, thereby further enhancing the structural stability and long-term reliability of the angle adjustment structure.

[0040] Preferably, a side push screw 60 can be provided on two opposite sides of the mating seat 12 parallel to the first arc-shaped step. The mating seat 12 is provided with a through hole whose axis is perpendicular to the extension direction of the first arc-shaped step. The side push screw 60 passes through the through hole, which connects to the arc-shaped recess. The side push screw 60 can move within the through hole, thereby adjusting the movement accuracy of the arc-shaped protrusion when it moves within the arc-shaped recess. This ensures that the first adjusting member 31 and the mounting seat 10 cooperate well during movement. At the same time, after the arc-shaped protrusion moves into place, it can abut against the side of the arc-shaped protrusion, thereby locking the position of the arc-shaped protrusion within the arc-shaped recess.

[0041] In this embodiment, both the mounting base 11 and the mating seat 12 have mounting holes at their centers, and the optical lens 80 passes through the mounting holes. The outer periphery of the optical lens 80 is a certain distance from the inner periphery of the mounting hole; that is, the size of the mounting hole should be larger than the size of the outer periphery of the optical lens 80 at the corresponding position, thus allowing sufficient space for the rotation of the optical lens 80. Optionally, the mounting base 11 and the mating seat 12 can be separate or integrated.

[0042] like Figure 6 , Figure 7As shown, in this embodiment, the first adjusting member 21 has an elongated hole 213 that avoids the movement path of the optical lens 80. The length direction of the elongated hole 213 is parallel to the first axis, thereby avoiding the movement path of the optical lens 80 when the second adjusting member 22 moves it, and providing sufficient movement space for the optical lens 80. Specifically, in this embodiment, the center of the elongated hole 213 coincides with the central axis of the optical lens 80, the width direction of the elongated hole 213 is along the movement direction of the first adjusting member 21, and the maximum width of the elongated hole 213 is the same as or close to the diameter of the outer periphery of the optical lens 80 at this location, so that the first adjusting member 21 can move the optical lens 80 along the width direction of the elongated hole 213. The length direction of the elongated hole 213 is the same as the movement direction of the second adjusting member 22, and the maximum length of the elongated hole 213 is greater than the maximum width of the elongated hole 213, so that when the second adjusting member 22 moves the optical lens 80, the optical lens 80 can move along the length direction of the elongated hole 213. Of course, a notch can also be provided in the first adjustment member 21 along the length of the elongated hole 213, and the notch is connected to the elongated hole 213 to provide movement space for the second adjustment member 22 to drive the optical lens 80 to move.

[0043] In this embodiment, the first adjusting member 21 is provided in two parts, including a fixed plate 212 and a movable plate 211. The movable plate 211 is closer to the mounting base 10 than the fixed plate 212. The side of the movable plate 211 facing the mounting base 10 is provided with a second arc-shaped surface 2111, and the side of the fixed plate 212 away from the mounting base 10 is provided with a third arc-shaped surface. The sides of the movable plate 211 and the fixed plate 212 that are close to each other can be made into flat surfaces to facilitate their processing and connection. The surface of the movable plate 211 away from the mounting base 10 is called the first surface. The first surface has a similar structure to the second arc-shaped surface 2111. The first surface is designed with a structure that protrudes in the middle and is recessed on both sides. However, considering the accuracy of adjustment, as well as the convenience and cost of processing, the surface of the protruding part in the middle of the first surface is set as a plane, so as to facilitate the mating with the surface of the fixed plate 212 near the movable plate 211. The recessed parts on both sides are set as arc-shaped curved surfaces parallel to the second arc-shaped surface 2111. The recessed parts on both sides are located on opposite sides of the protruding part in the middle and are arranged along the movement direction of the second adjusting member 22. The fixed plate 212 can be set as a rectangular plate, with the same structure as the mating seat 12 of the mounting base 10, but different in size. The size of the fixed plate 212 is smaller than that of the mating seat 12 of the mounting base 10, and the placement direction of the fixed plate 212 is equivalent to rotating the mating seat 12 of the mounting base 10 by 90 degrees, so that the bending direction of the third arc-shaped surface is perpendicular to the bending direction of the first arc-shaped surface, thereby allowing the optical lens 80 to rotate in different directions. The plane of the fixed plate 212 near the movable plate 211 has the same surface size as the central protrusion of the first surface. The edge of the first surface does not extend beyond the edge of the second arc-shaped surface 2111, and the edge of the third arc-shaped surface does not extend beyond the plane of the fixed plate 212 near the movable plate 211. Therefore, the projection of the edge of the third arc-shaped surface on the mounting base 10 does not exceed the projection of the second arc-shaped surface 2111 on the mounting base 10, facilitating the adjustment of the movement of the first adjusting member 21 and the second adjusting member 22 respectively. Since the axis of movement of the first adjusting member 21 is perpendicular to the axis of movement of the second adjusting member 22, the bending direction of the second arc-shaped surface 2111 is perpendicular to the bending direction of the third arc-shaped surface. Of course, the first adjusting member 21 can also be integrally formed. In this embodiment, the structure of the second adjustment member 22 can be set to be the same as that of the movable plate 211. Considering the convenience of adjustment, the size of the second adjustment member 22 is smaller than that of the movable plate 211, and the placement direction of the second adjustment member 22 is different from that of the movable plate 211. The second adjustment member 22 is equivalent to rotating the scaled-down version of the movable plate 211 by 90 degrees along the axis of the optical lens 80, so that the movement directions of the second adjustment member 22 and the first adjustment member 21 are 90 degrees apart.Since the first adjusting member 21 can move the optical lens 80 simultaneously, it can also move the second adjusting member 22. Therefore, the center of the second adjusting member 22 can be provided with an elongated hole 213 whose length direction is perpendicular to the direction of the elongated hole 213 of the movable plate 211, or it can be directly provided with a circular hole that matches the outer periphery of the optical lens 80. The side of the second adjusting member 22 closest to the first adjusting member 21 has a fourth arc-shaped surface. In this embodiment, since the third and fourth arc-shaped surfaces are farther from the center of the aperture stop 81 than the first and second arc-shaped surfaces 2111, the radius of the arc corresponding to the third and fourth arc-shaped surfaces is larger than the radius of the arc corresponding to the first and second arc-shaped surfaces 2111. The side of the second adjusting member 22 away from the first adjusting member 21 can be provided as a flat surface to facilitate connection with the flange of the optical lens 80. The flange and the second adjusting member 22 can be connected by screws. Preferably, the center of the second adjusting member 22 is provided as a circular hole to facilitate connection with the flange of the optical lens 80.

[0044] In this embodiment, the angle adjustment mechanism further includes an adjustment component 30, which is movably connected to the mounting base 10. The adjustment component 30 has an abutment surface 311 that abuts against the adjustment component 20. The adjustment component 30 can push the adjustment component 20 to move along the bending direction of the first arc surface, thereby improving the adjustment efficiency and adjustment accuracy of the adjustment component 30.

[0045] In this embodiment, the adjustment assembly 20 includes a first adjustment member 21 and a second adjustment member 22. The first adjustment member 21 has a third arc-shaped surface on the side away from the mounting base 10. The cross-section of the third arc-shaped surface in the second direction is a second arc, and the cross-section of the first arc-shaped surface in the first direction is a first arc. The first direction is perpendicular to the second direction. The abutment surface 311 includes a first abutment surface and a second abutment surface. The adjustment assembly 30 includes at least two first adjustment members 31 and at least two second adjustment members 32. The first adjustment members 31 are movably connected to the mounting base 10, and the two first adjustment members 31 are located on opposite sides of the mounting base. The first adjustment member 31 has a first abutment surface that abuts against the first adjustment member 21. The first adjustment member 31 can push the adjustment assembly 20 to move along the first arc-shaped surface. The second adjustment members 32 are movably connected to the mounting base 10, and the two second adjustment members 32 are located on opposite sides of the mounting base. The second adjustment member 32 has a second abutment surface that abuts against the second adjustment member 22. The second adjustment member 32 can push the second adjustment member 22 to rotate along the first adjustment member 21.

[0046] In this embodiment, at least two first adjusting members 31 are arranged perpendicular to the first direction, and at least two second adjusting members 32 are arranged perpendicular to the second direction.

[0047] Specifically, in this embodiment, the edge of the mounting base 10 is provided with an extension arm 112 extending toward the adjustment assembly 20. An adjustment hole is provided on the extension arm 112, the axis of which is parallel to the moving direction of the adjustment assembly 20. The adjustment assembly 30 passes through the adjustment hole. Optionally, the adjustment hole can be a threaded hole, thereby allowing the adjustment assembly 30 to be threadedly connected to the adjustment hole. The adjustment assembly 30 includes an operating end and an abutment end disposed opposite to each other, the abutment end having an abutment surface 311. The abutment surface 311 abuts against the edge of the adjustment assembly 20. When the adjustment assembly 30 rotates in the threaded hole and moves toward the adjustment assembly 20, it pushes the adjustment assembly 20 to move.

[0048] More specifically, this embodiment has four extendable arms 112, one at each of the four edges of the rectangular mounting base 10, arranged in pairs opposite each other. To allow sufficient adjustment space for the first adjusting member 21 and the second adjusting member 22, two extendable arms 112 that cooperate with the first adjusting member 31 are positioned at the edge of the mounting base 11 of the mounting base 10, and two extendable arms 112 that cooperate with the second adjusting member 32 are positioned at the edge of the mating seat 12 of the mounting base 10, thus facilitating the cooperation between the adjusting assembly 20 and the adjusting assembly 30. Alternatively, the extension height of the extendable arms 112 and the axial length of the adjusting assembly 30 can be adjusted so that all extendable arms 112 are positioned at the edge of the mounting base 11 of the mounting base 10.

[0049] In this embodiment, among the four adjustment holes of the extended arms 112, the axes of two opposing adjustment holes are arranged along a first direction, referred to as first adjustment holes, and a first adjustment member 31 is disposed in the first adjustment holes. The axes of the other two opposing adjustment holes are arranged along a second direction, referred to as second adjustment holes, and a second adjustment member 32 is disposed in the second adjustment holes. In this embodiment, the first adjustment member 31 abuts against the two sides of the movable plate 211 of the first adjustment member 21 parallel to the first direction. When the abutting end of one of the first adjustment members 31 is operated to increase the length of its abutting end extending out of the adjustment hole, that is, when the first adjustment member 31 moves towards the movable plate 211, it can push the first adjustment member 31 towards the other first adjustment member 31. The other first adjustment member 31, by reducing the length of its abutting end extending out of the adjustment hole, provides space for the movement of the first adjustment member 21, thereby avoiding the first adjustment member 21. After the position of the first adjusting member 21 is adjusted, the two first adjusting members 31 are operated so that the abutting ends of both first adjusting members 31 abut against the first adjusting member 21, thereby limiting the position of the first adjusting member 21 and improving the stability and reliability of the angle adjustment mechanism. Similarly, the second adjusting member 32 abuts against the two sides of the second adjusting member 22 parallel to the second direction. The process of operating the second adjusting member 32 to move the second adjusting member 22 is the same as the process of operating the first adjusting member 31 to move the first adjusting member 21, and will not be described again.

[0050] Preferably, such as Figure 5 As shown, the abutting end of the adjusting component 30 in this embodiment is configured as a spherical surface to facilitate abutting and mating with the adjusting component 20. The abutting of the spherical surface with the adjusting component 20 allows the adjusting component 30 to automatically adjust its angle within a certain range to fit the surface of the adjusting component 20. This ensures good contact between the adjusting component 30 and the adjusting component 20 even when the axial direction of the adjusting component 30 and the side surface of the mating adjusting component 20 are not completely perpendicular, or when the side surface of the adjusting component 20 is not completely flat or has a small angle of inclination. This improves the adjustment accuracy and stability of the angle adjustment mechanism.

[0051] Preferably, the side of the adjusting component 20 is provided with an abutting area 2114 that mates with the abutting end of the adjusting component 30. The surface of the abutting area 2114 is slightly lower than the surface of other adjacent areas, thereby forming a groove. The abutting end of the adjusting component 30 mates with the bottom wall of the groove to improve the reliability of the engagement between the adjusting component 30 and the adjusting component 20.

[0052] In this embodiment, the first adjusting member 21 has multiple first fastening holes 2115, which penetrate the second arcuate surface 2111. The second adjusting member 22 has multiple second fastening holes, which penetrate the fourth arcuate surface. The angle adjustment mechanism further includes multiple first fastening components 40 and multiple second fastening components 50. A portion of the first fastening component 40 passes through the first fastening hole 2115 and abuts against the mounting base 10. A portion of the second fastening component 50 passes through the second fastening hole and connects to the first adjusting member 21. Thus, when the adjusting component 30 adjusts the adjusting component 20 to its proper position, the first fastening component 40 locks the adjusting component 20 and the mounting base 10. When the second adjusting member 32 adjusts the second adjusting member 22 to its proper position, the second fastening component 50 locks the second adjusting member 22 and the first adjusting member 21, thereby improving the stability of the angle adjustment mechanism and thus improving the long-term stability of the optical lens 80.

[0053] In this embodiment, the first fastening assembly 40 includes a first fastener 41 and a first washer 42. The first fastener 41 passes through the first fastening hole 2115 and is connected to the mounting base 10. The first washer 42 is disposed between the first fastener 41 and the first adjusting member 21. The second fastening assembly 50 includes a second fastener 51 and a second washer 52. The second fastener 51 passes through the second fastening hole and is connected to the first adjusting member 21. The second washer 52 is disposed between the second fastener 51 and the second adjusting member 22. In other words, the first fastener 41 is movably inserted into the adjusting component 20 and can move radially along the first arc surface to lock the adjusting component 20. The first shim 42 helps to increase the friction between the first fastener 41 and the adjusting component 20, thereby further ensuring the long-term stability of the angle adjustment mechanism. The second fastener 51 is movably inserted into the second adjusting member 22 and can move radially along the third arc surface to lock the second adjusting member 22. The second shim 52 helps to increase the friction between the second fastener 51 and the second adjusting member 22, thereby further ensuring the long-term stability of the angle adjustment mechanism.

[0054] Specifically, such as Figure 6 , Figure 7As shown, both sides of the movable plate 211 of the first adjusting member 21 are provided with first fastening holes 2115 on their arc-shaped surfaces 2113. The axial direction of the first fastening holes 2115 is arranged along the radial direction of the arc-shaped surfaces 2113. The first fastening holes 2115 are designed as elongated holes, and their length direction is along the bending direction of the second arc-shaped surface 2111, so as to provide sufficient adjustment space for the first adjusting member 21. Optionally, the first fastener 41 can be a bolt for threaded engagement with the mounting base 10, or it can be engaged with the mounting base 10 via a snap-fit ​​mechanism, which can limit the first adjusting member 21 between the mounting base 10 and the first fastener 41, while also enabling the loosening and locking of the first adjusting member 21. In this embodiment, the first fastener 41 is a locking bolt. The mounting base 11 of the mounting seat 10 is provided with a threaded hole that mates with the first fastener 41. When the position of the first adjusting member 21 needs to be adjusted, the first fastener 41 is loosened, thereby reducing the friction between the first fastener 41 and the first adjusting member 21, so as to facilitate the movement of the first adjusting member 21 relative to the mounting seat 10. When the position of the first adjusting member 21 is adjusted to the correct position, the first fastener 41 is locked, thereby increasing the friction between the first fastener 41 and the first adjusting member 21, so that the first adjusting member 21 cannot move along the length direction of the first fastening hole 2115. At the same time, the arc-shaped protrusion of the movable plate 211 and the arc-shaped groove of the mounting seat 10 are tightly fitted, thereby locking the first adjusting member 21 and the mounting seat 10. To achieve long-term stability and ensure good contact between the first fastener 41 and the locking surface, thereby further increasing the friction between the first fastener 41 and the side arc-shaped surface 2113 of the first surface, this embodiment provides a first washer 42, the size of which is larger than the size of the first fastening hole 2115. For example... Figure 5 As shown, the side of the arc-shaped shim closest to the movable plate 211 is set as an arc surface that matches the side arc surface 2113 of the first surface. The radius of the arc is the same as that of the side arc surface 2113 of the first surface to ensure good fit. In this way, during the adjustment of the first adjusting member 21, the first shim 42 can always be in good contact with the first surface without gaps. The surface of the first shim 42 away from the movable plate 211 is a plane. The plane can always be in surface contact with the mounting surface of the first fastener 41, thereby ensuring that the first fastener 41 is in surface contact with the first shim 42 after locking. This helps to increase the friction force and ensure the long-term stability of the entire angle adjustment structure.

[0055] To further improve the reliability of locking the first adjusting member 21 to the mounting base 10, each of the two side arc surfaces 2113 of the second arc surface 2111 in this embodiment is provided with two first fasteners 41 and first gaskets 42.

[0056] like Figure 1 , Figure 2As shown, in this embodiment, the structure and arrangement of the second fastener 51 and the second washer 52 are the same as those of the first fastener 41 and the first washer 42, and will not be described again. The difference is that, since the movement directions of the first adjusting member 21 and the second adjusting member 22 are different, the placement directions of the movable plate 211 and the second adjusting member 22 are different. Therefore, the length direction of the second fastening hole is perpendicular to the length direction of the first fastening hole 2115, thereby providing adjustment space for the movement of the second adjusting member 22 relative to the first adjusting member 21. A threaded hole that mates with the second fastener 51 is provided on the fixing plate 212 of the second adjusting member 22, and the second washer 52 is disposed between the surface of the fixing plate 212 away from the movable plate 211 and the bolt head of the second fastener 51.

[0057] The angle adjustment mechanism of this embodiment can realize the angle adjustment of various large and long lenses. It can be specified to adjust the lens angle with the far-end aperture 81 of the optical lens 80 as the rotation center, and the adjustment process is wirelessly coupled. After the adjustment is completed, the adjustment component 20 is locked by the first fastener 41 and the second fastener 51 to achieve a long-term stable effect, which is particularly suitable for occasions with high stability requirements.

[0058] Example 2

[0059] Unlike Embodiment 1, the adjustment component 20 in this embodiment does not distinguish between the first adjustment member 21 and the second adjustment member 22. The adjustment component 20 is a whole, and a second arc-shaped surface 2111 is provided on the side of the adjustment component 20 facing the mounting base 10. The second arc-shaped surface 2111 can move in any direction along the first arc-shaped surface.

[0060] In an embodiment not shown, both the first and second arcuate surfaces 2111 are spherical, thus the adjustment component 20 can move in any direction along the first arcuate surface. The adjustment component 20 in this embodiment can also be configured as a rectangle similar to the embodiment, with a through hole in the middle for the optical lens 80 to pass through. The through hole in this embodiment can simply be a circular hole matching the outer periphery of the optical lens 80. When the adjustment component 20 moves in any direction, it can drive the optical lens 80 to rotate in the same direction. Other structures of the adjusting component 30, such as the adjusting component 30, the first fastener 41, the first shim 42, the second fastener 51, and the second shim 52, can be configured to be the same as in Embodiment 1. The only difference is that in Embodiment 1, the adjusting component 30 needs to cooperate with the first adjusting member 21 and the second adjusting member 22 respectively, while in this embodiment, although the adjusting component 20 is a single component, it integrates the functions of the first adjusting member 21 and the second adjusting member 22. Therefore, the adjusting component 30 can cooperate with the adjusting component 20, and the first fastener 41, the first shim 42, the second fastener 51, and the second shim 52 also cooperate with the adjusting component 20 in this embodiment. The functions of the third and fourth arc-shaped surfaces in Embodiment 1 are also achieved through the cooperation of the first and second arc-shaped surfaces 2111 in this embodiment.

[0061] Specifically, the adjustment component 20 in this embodiment is rectangular and also has four sides, namely two sets of opposing sides. Multiple first adjusting members 31 and multiple second adjusting members 32 are respectively provided to abut and cooperate with the two sides of the adjustment component 20, thereby enabling the adjustment component 20 to move along the mounting base 10 while simultaneously limiting its circumferential position after it has reached its designated position. Multiple circular holes are provided radially along the second arcuate surface 2111, and multiple threaded holes are provided radially along the first arcuate surface on the mounting base 10. First fasteners 41 and second fasteners 51 pass through the circular holes and cooperate with the threaded holes to connect the adjustment component 20 to the mounting base 10. The circular hole of the adjusting component 20 can be set to be much larger than the thread diameter of the first fastener 41, thereby providing sufficient space for the movement of the adjusting component 20 relative to the mounting base 10 to achieve the movable connection between the adjusting component 20 and the mounting base 10. The size of the first washer 42 and the second washer 52 should be larger than the size of the circular hole, and can have an appropriate thickness to provide sufficient structural strength and friction, so that the first fastener 41 and the second fastener 51 can lock the adjusting component 20 and the mounting base 10 after the adjusting component 20 moves into place. In order to achieve the movement of the adjusting component 20 in any direction along the first arc surface, the adjusting component 20 and the mounting base 10 in this embodiment do not need to be provided with the arc-shaped concave and arc-shaped protrusion as in the first embodiment. They can be limited and connected only by the adjusting component 30, the first fastener 41, the second fastener 51, the first washer 42 and the second washer 52.

[0062] It should be noted that "multiple" in the above embodiments refers to at least two.

[0063] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0064] 1. This solves the problem in existing technologies where the lens attitude cannot be adjusted using the far-end aperture as the rotation center;

[0065] 2. The mounting base has a first arc-shaped surface and the adjustment component has a second arc-shaped surface, and the curvature of the first arc-shaped surface and the second arc-shaped surface is the same, so that the second arc-shaped surface can move along the curvature direction of the first arc-shaped surface, thereby driving the optical lens to rotate around the center of the aperture stop.

[0066] 3. Allows the lens to adjust its orientation while keeping the aperture stop position unchanged, thereby avoiding problems such as optical path offset and image quality degradation, and thus improving the accuracy and flexibility of optical lens alignment.

[0067] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An angle adjustment mechanism, characterized in that, The angle adjustment mechanism is used to adjust the attitude of the optical lens (80). The angle adjustment mechanism is sleeved on the outside of the optical lens (80). The optical lens (80) has an aperture stop (81). The angle adjustment mechanism includes: Mounting base (10), one side surface of which has a first arcuate surface; An adjustment component (20) is movably connected to the mounting base (10), and the adjustment component (20) has a second arc surface (2111) that mates with the first arc surface. The curvature of the first arc surface and the second arc surface (2111) are the same. When the second arc surface (2111) moves along the first arc surface, the adjustment component (20) drives the optical lens (80) to rotate around the center of the aperture stop (81).

2. The angle adjustment mechanism according to claim 1, characterized in that, Both the first arcuate surface and the second arcuate surface (2111) are spherical surfaces.

3. The angle adjustment mechanism according to claim 1, characterized in that, The first arc surface has a cross-section of a first circular arc in a first direction, and the second arc surface (2111) moves along the extension direction of the first circular arc so that the adjustment component (20) rotates around the first axis, and the center of the aperture (81) is located on the first axis.

4. The angle adjustment mechanism according to claim 3, characterized in that, The adjustment component (20) includes: The first adjusting member (21) is movably connected to the mounting base (10), and the first adjusting member (21) has a second arc-shaped surface (2111) on the side facing the mounting base (10), and a third arc-shaped surface on the side facing away from the mounting base (10), wherein the cross-section of the third arc-shaped surface in the second direction is a second circular arc. The second adjustment member (22) is located on the side of the first adjustment member (21) away from the mounting base (10). The second adjustment member (22) has a fourth arcuate surface that mates with the third arcuate surface. When the fourth arcuate surface moves along the third arcuate surface, the second adjustment member (22) rotates about the second axis. The center of the aperture (81) is located on the second axis. Wherein, the first direction is perpendicular to the second direction, and the first axis is perpendicular to the second axis.

5. The angle adjustment mechanism according to claim 4, characterized in that, The radius of the first arc is different from the radius of the second arc.

6. The angle adjustment mechanism according to claim 4, characterized in that, The first adjustment member (21) has an elongated hole (213) that avoids the movement path of the optical lens (80), and the length direction of the elongated hole (213) is parallel to the first axis.

7. The angle adjustment mechanism according to claim 1, characterized in that, The angle adjustment mechanism further includes an adjustment component (30), which is movably connected to the mounting base (10), and the adjustment component (30) has an abutting surface (311) that abuts against the adjustment component (20), and the adjustment component (30) can push the adjustment component (20) to move along the first arc surface.

8. The angle adjustment mechanism according to claim 7, characterized in that, The adjustment assembly (20) includes a first adjustment member (21) and a second adjustment member (22). The first adjustment member (21) has a third arc-shaped surface on the side opposite to the mounting base (10). The cross-section of the third arc-shaped surface in the second direction is a second circular arc. The cross-section of the first arc-shaped surface in the first direction is a first circular arc. The first direction is perpendicular to the second direction. The abutment surface (311) includes a first abutment surface and a second abutment surface. The adjustment assembly (30) includes: At least two first adjusting members (31) are movably connected to the mounting base (10), and the two first adjusting members (31) are located on opposite sides of the mounting base (10), and the first adjusting member (31) has a first abutting surface that abuts against the first adjusting member (21), and the first adjusting member (31) can push the adjusting assembly (20) to move along the first arc surface; At least two second adjusting members (32) are movably connected to the mounting base (10) and the two second adjusting members (32) are located on opposite sides of the mounting base (10), and the second adjusting member (32) has a second abutting surface that abuts against the second adjusting member (22), and the second adjusting member (32) is capable of pushing the second adjusting member (22) to rotate along the third arcuate surface.

9. The angle adjustment mechanism according to claim 8, characterized in that, At least two of the first adjusting members (31) are arranged perpendicular to the first direction; At least two of the second adjustment members (32) are arranged perpendicular to the second direction.

10. The angle adjustment mechanism according to claim 4, characterized in that, The first adjusting member (21) has a plurality of first fastening holes (2115), the first fastening holes (2115) penetrating the second arcuate surface (2111); the second adjusting member (22) has a plurality of second fastening holes, the second fastening holes penetrating the fourth arcuate surface; the angle adjusting mechanism further includes: A plurality of first fastening components (40), a portion of which passes through the first fastening hole (2115) and is connected to the mounting base (10); Multiple second fastening components (50), a portion of which passes through the second fastening hole and is connected to the first adjustment member (21).

11. The angle adjustment mechanism according to claim 10, characterized in that, The first fastening assembly (40) includes a first fastener (41) and a first washer (42). The first fastener (41) passes through the first fastening hole (2115) and is connected to the mounting base (10). The first washer (42) is disposed between the first fastener (41) and the first adjusting member (21). The second fastening assembly (50) includes a second fastener (51) and a second washer (52). The second fastener (51) passes through the second fastening hole and is connected to the first adjusting member (21). The second washer (52) is disposed between the second fastener (51) and the second adjusting member (22).

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