Optical element adjustment device

Abstract

The utility model relates to an optical element adjusting device, including the bottom plate, yaw adjusting board and the pitch adjusting board that set up in proper order from below to above along the first direction, yaw adjusting board is with the bottom plate rotation connection with the deflection axis that parallels the first direction as the rotation center, and the pitch adjusting board is with the pitch adjusting board rotation connection with the pitch axis that parallels the second direction as the rotation center, yaw adjusting component is set up in the bottom plate and is used for driving yaw adjusting board to rotate around the deflection axis, pitch adjusting bolt is with yaw adjusting board screw connection and is with the pitch adjusting board and resists, pitch locking assembly includes threaded guide rod and locking nut, yaw adjusting board is passed through and is seted up first strip hole along the third direction extension, threaded guide rod is with the pivot as the center and is connected with the pitch adjusting board rotation with the rotation axis that parallels the second direction, and along the first direction is passed through first strip hole to with locking nut screw connection, thereby avoid the situation that the precision deviation or locking failure occurs.

Description

Technical Field

[0001] This utility model relates to the technical field of optical detection equipment, and in particular to an optical element adjustment device. Background Technology

[0002] In fields such as optical inspection and laser processing, dedicated adjustment devices are usually set up to support optical components and achieve adjustments such as pitch and yaw of the optical components. Such adjustment devices need to meet the adjustment range requirements on the one hand, and ensure the stability after adjustment on the other hand.

[0003] Traditional adjustment devices often cannot be completely locked after angle adjustment to achieve long-term stability. Although some adjustment devices are equipped with locking structures, on the one hand, the locking force generated during the locking process will change the adjusted angle, thus interfering with the adjustment accuracy. On the other hand, the existing locking structures have poor structural adaptability. As the adjustment angle of the adjustment device increases, the locking reliability may decrease due to the unstable contact of the locking structure. Utility Model Content

[0004] Therefore, it is necessary to provide an optical element adjustment device that does not interfere with adjustment accuracy and can reliably lock at any adjustment angle, addressing the problems of interference with adjustment accuracy and poor structural adaptability of the current locking structure of optical element adjustment devices.

[0005] This application provides an optical element adjustment device, including...

[0006] A base plate, a yaw adjustment plate, and a pitch adjustment plate are arranged sequentially from bottom to top along a first direction. The yaw adjustment plate is rotatably connected to the base plate with a yaw axis parallel to the first direction as its rotation center, and the pitch adjustment plate is rotatably connected to the yaw adjustment plate with a pitch axis parallel to the second direction as its rotation center.

[0007] A yaw adjustment assembly is disposed on the base plate and is used to drive the yaw adjustment plate to rotate around the yaw axis;

[0008] The pitch adjustment bolt is threadedly connected to the yaw adjustment plate and abuts against the pitch adjustment plate;

[0009] The pitch locking assembly includes a threaded guide rod and a locking nut. The yaw adjustment plate has a first strip hole extending in a third direction. The threaded guide rod is rotatably connected to the pitch adjustment plate with a pivot axis parallel to a second direction as its center, and passes through the first strip hole in a first direction to be threadedly connected to the locking nut.

[0010] In one embodiment, the optical element adjustment device further includes at least two ball bearings and at least one spring. Each ball bearing is located between the pitch adjustment plate and the yaw adjustment plate and is spaced apart along a second direction. The pitch axis is the line connecting the centers of each ball bearing. One end of the spring is connected to the pitch adjustment plate, and the other end is connected to the yaw adjustment plate.

[0011] In one embodiment, both the yaw adjustment plate and the pitch adjustment plate are fixed with brass seats corresponding to each of the balls, and each ball is clamped between the two corresponding brass seats.

[0012] In one embodiment, each of the springs is arranged alternately with the balls along the pitch axis.

[0013] In one embodiment, the bottom surface of the pitch adjustment plate is provided with a guide groove extending in a third direction, and the pitch adjustment bolt can abut against the inner wall of the guide groove.

[0014] In one embodiment, a set of the yaw adjustment components are respectively provided on both sides of the base plate along the first direction;

[0015] The optical element adjustment device further includes a yaw locking bolt, which passes through the yaw adjustment plate and is threadedly connected to the base plate to clamp and fix the yaw adjustment plate and the base plate in a first direction.

[0016] In one embodiment, the yaw adjustment assembly includes a mounting base and a yaw adjustment bolt. The mounting base is fixed to the base plate, and the yaw adjustment bolt passes through the mounting base in a second direction to abut against the yaw adjustment plate. The yaw adjustment bolt is threadedly connected to the mounting base.

[0017] In one embodiment, the pitch adjustment plate has a through clearance groove, the yaw adjustment plate has a through arc groove with the yaw axis as the circle, the base plate has a threaded hole, the yaw locking bolt passes through the clearance groove and the arc groove to be threaded to the inner wall of the threaded hole, and the bolt head of the yaw locking bolt abuts against the top surface of the yaw adjustment plate.

[0018] In one embodiment, the optical element adjustment device further includes a magnet, a ferromagnetic body, and a rotating shaft. The two ends of the rotating shaft are respectively inserted into the base plate and the yaw adjustment plate and are rotatably connected to both. The yaw axis is the central axis of the rotating shaft. The magnet and the ferromagnetic body are both arranged around the rotating shaft, and one is embedded in the base plate, while the other is correspondingly embedded in the yaw adjustment plate along a first direction.

[0019] In one embodiment, the optical element adjustment device further includes a mounting assembly, which includes a mounting bracket and a plurality of mounting bolts. The mounting bracket is fixed to the pitch adjustment plate and has a through mounting hole in a third direction. The mounting bolts are distributed circumferentially along the mounting bracket, and each mounting bolt passes radially through the mounting bracket into the mounting hole. The mounting bolts are threadedly connected to the mounting bracket.

[0020] The aforementioned optical element adjustment device is rotatably connected to the pitch adjustment plate via a threaded guide rod, ensuring that the threaded guide rod remains vertical under gravity regardless of the pitch adjustment plate's tilt angle. In other words, the threaded guide rod is always perpendicular to the yaw adjustment plate. The locking force generated by the locking nut during the locking process is always along the first direction. On the one hand, it does not generate a lateral component force on the adjusted pitch angle, thus avoiding accuracy deviation due to locking. On the other hand, the locking nut and the yaw adjustment plate can always maintain good contact, ensuring that the locking force can be evenly transmitted and avoiding locking failure due to unstable contact. Attached Figure Description

[0021] Figure 1 This is a perspective view of the optical element adjustment device of this application;

[0022] Figure 2 for Figure 1 Exploded view of yaw control plate 20 and pitch control plate 30;

[0023] Figure 3 for Figure 2 A three-dimensional view of the pitch adjustment plate 30 at another angle;

[0024] Figure 4 for Figure 1 Exploded view of the center base plate 10 and the yaw adjustment plate 20;

[0025] Figure 5 for Figure 4 A three-dimensional view of the yaw adjustment plate 20 from another angle.

[0026] Reference numerals: 1. Yaw axis; 2. Pitch axis; 10. Base plate; 11. Threaded hole; 20. Yaw adjustment plate; 21. First strip hole; 22. Arc groove; 30. Pitch adjustment plate; 31. Guide groove; 32. Clearance groove; 40. Yaw adjustment assembly; 41. Mounting base; 42. Yaw adjustment bolt; 50. Pitch adjustment bolt; 60. Pitch locking assembly; 61. Threaded guide rod; 62. Locking nut; 71. Ball bearing; 72. Spring; 73. Brass base; 81. Magnet; 82. Ferromagnetic body; 83. Shaft; 90. Mounting assembly; 91. Mounting bracket. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] For ease of description, in this application, the vertical direction perpendicular to the horizontal plane is defined as the first direction, and the two directions parallel to the horizontal plane and perpendicular to each other are defined as the second direction and the third direction.

[0034] Please combine Figure 1 as well as Figure 2 As shown, this application provides an optical element adjustment device, including a base plate 10, a yaw adjustment plate 20, and a pitch adjustment plate 30 arranged sequentially from bottom to top along a first direction. The yaw adjustment plate 20 is rotatably connected to the base plate 10 with a yaw axis 1 parallel to the first direction as its rotation center, and the pitch adjustment plate 30 is rotatably connected to the yaw adjustment plate 20 with a pitch axis 2 parallel to the second direction as its rotation center. A yaw adjustment assembly 40 is disposed on the base plate 10 and is used to drive the yaw adjustment plate 20 to rotate around the yaw axis 1. A pitch adjustment bolt 50 is threadedly connected to the yaw adjustment plate 20 and abuts against the pitch adjustment plate 30. A pitch locking assembly 60 includes a threaded guide rod 61 and a locking nut 62. The yaw adjustment plate 20 has a first strip hole 21 extending along a third direction. The threaded guide rod 61 is rotatably connected to the pitch adjustment plate 30 with a rotation axis parallel to the second direction as its center, and extends along the first direction through the first strip hole 21 to be threadedly connected to the locking nut 62.

[0035] In this application, the pitch adjustment plate 30 is used to support the optical element. The yaw adjustment assembly 40 can drive the yaw adjustment plate 20 to rotate relative to the base plate 10 around the yaw axis 1, thereby realizing yaw adjustment. The pitch adjustment bolt 50 can drive the pitch adjustment plate 30 to rotate relative to the yaw adjustment plate 20 around the pitch axis 2, thereby realizing yaw and pitch adjustment of the optical element.

[0036] Based on this, the threaded guide rod 61 is rotatably connected to the pitch adjustment plate 30, so that no matter how the pitch adjustment plate 30 is adjusted to any angle, the threaded guide rod 61 always remains vertical under the action of gravity. That is to say, the threaded guide rod 61 always remains perpendicular to the yaw adjustment plate 20. The locking force generated by the locking nut 62 during the locking process is always along the first direction. On the one hand, it will not generate a lateral component force on the adjusted pitch angle, thereby avoiding accuracy deviation due to locking. On the other hand, the locking nut 62 and the yaw adjustment plate 20 can always make good contact, ensuring that the locking force can be evenly transmitted and avoiding locking failure due to unstable contact.

[0037] In some embodiments, the pitch adjustment plate 30 is symmetrically provided with two threaded guide rods 61 on both sides along the second direction to further improve the uniformity of the locking force.

[0038] In some embodiments, the yaw adjustment range is ±20° and the pitch adjustment range is ±15°.

[0039] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the optical element adjustment device further includes at least two ball bearings 71 and at least one spring 72. Each ball bearing 71 is located between the pitch adjustment plate 30 and the yaw adjustment plate 20 and is spaced apart along the second direction. The pitch axis 2 is the center line connecting each ball bearing 71. One end of the spring 72 is connected to the pitch adjustment plate 30 and the other end is connected to the yaw adjustment plate 20.

[0040] It is easy to understand that by applying preload to the ball 71 through the spring 72, the yaw adjustment plate 20 and the pitch adjustment plate 30 can always press the ball 71 tightly, thereby eliminating gaps and avoiding angle deviation caused by micro-vibrations, further improving adjustment accuracy. In addition, by taking the line connecting the centers of gravity of the ball 71 as the pitch axis 2, since the ball 71 and the yaw adjustment plate 20 and the pitch adjustment plate 30 have rolling friction, the adjustment resistance can be effectively reduced and the adjustment sensitivity can be improved.

[0041] Of course, in some other embodiments, other commonly used rotating structures, such as hinged pivots, can also be used between the yaw adjustment plate 20 and the pitch adjustment plate 30, as long as the pitch adjustment plate 30 can rotate relative to the yaw adjustment plate 20 around the pitch axis 2. This application will not give examples of each of these.

[0042] In some embodiments, the ball bearing 71 and the pitch adjustment bolt 50 are located at both ends of the yaw adjustment plate 20 along the second direction to increase the lever arm of the pitch adjustment force, making it easier for the operator to perform pitch adjustment; further, in some embodiments, the threaded guide rod 61 corresponds to the pitch adjustment bolt 50 along the second direction, that is, the threaded guide rod 61 is also located at the end away from the ball bearing 71 along the second direction to increase the lever arm of the locking force and improve the locking reliability.

[0043] In some embodiments, the yaw adjustment plate 20 and the pitch adjustment plate 30 are provided with spring holes along the first direction, and a pin parallel to the horizontal plane is inserted into the spring hole. The two ends of the spring 72 are respectively connected to the pins on the yaw adjustment plate 20 and the pitch adjustment plate 30.

[0044] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, both the yaw adjustment plate 20 and the pitch adjustment plate 30 are fixed with brass seats 73 corresponding to each ball 71, and each ball 71 is clamped between two corresponding brass seats 73.

[0045] The brass seat 73 acts as a soft medium to encase the ball 71, which can provide self-lubrication, improve service life, and ensure that the ball 71 is subjected to uniform force, thus avoiding uneven load shaking caused by local wear.

[0046] In other embodiments, resin or other soft media may be used as the ball bearing seat, which will not be listed here.

[0047] In some embodiments, the brass base 73 has a tapered or hemispherical hole for accommodating the ball 71.

[0048] Please refer to Figure 2 As shown, in some embodiments, each spring 72 is staggered with the ball 71 along the pitch axis 2; the springs 72 along the pitch axis 2 can ensure that the preload of the spring 72 acts near the ball 71, thereby improving the preload reliability. The staggered arrangement with the ball 71 can make the preload uniform and also avoid interference between the springs 72.

[0049] Preferably, in some embodiments, the optical element adjustment device further includes two ball bearings 71 and three springs 72.

[0050] Please combine Figure 2 as well as Figure 3As shown, in some embodiments, the bottom surface of the pitch adjustment plate 30 is provided with a guide groove 31 extending in a third direction, and the pitch adjustment bolt 50 can abut against the inner wall of the guide groove 31; the guide groove 31 can restrict the displacement of the pitch adjustment bolt 50 in the second direction, retaining only the linear degree of freedom in the third direction, thereby converting the extension and retraction of the pitch adjustment bolt 50 in the first direction into the pure rotational motion of the pitch adjustment plate 30 around the pitch axis 2, eliminating the yaw error that may exist during pitch adjustment.

[0051] Preferably, in some embodiments, the cross-section of the guide groove 31 is V-shaped, and the end of the pitch adjustment bolt 50 is spherical, so as to reduce the frictional resistance between the pitch adjustment bolt 50 and the inner wall of the guide groove 31, making it easier for the operator to make adjustments.

[0052] Please combine Figure 1 as well as Figure 4 As shown, in some embodiments, a set of yaw adjustment components 40 are respectively provided on both sides of the base plate 10 along the first direction;

[0053] The optical element adjustment device also includes a yaw locking bolt (not shown), which passes through the yaw adjustment plate 20 and is threaded to the base plate 10 to clamp and fix the yaw adjustment plate 20 and the base plate 10 in a first direction.

[0054] The yaw locking bolt is used to lock the yaw adjustment plate 20 and the base plate 10 after the yaw adjustment is completed. Based on this, this application provides a set of yaw adjustment components 40 on both sides of the base plate 10. After the adjustment is completed, the two sets of yaw adjustment components 40 abut against the two sides of the base plate 10 along the first direction, which can achieve the effect of pre-locking and prevent the yaw angle between the base plate 10 and the yaw adjustment plate 20 from shifting during the subsequent locking process by the yaw locking bolt, thereby improving the adjustment accuracy.

[0055] In some embodiments, the yaw adjustment assembly 40 is located on the side of the base plate 10 away from the yaw axis 1 along a third direction to increase the lever arm of the yaw adjustment force, making it easier for the operator to make adjustments.

[0056] Please refer to Figure 4 As shown, in some embodiments, the yaw adjustment assembly 40 includes a mounting base 41 and a yaw adjustment bolt 42. The mounting base 41 is fixed to the base plate 10, and the yaw adjustment bolt 42 passes through the mounting base 41 along a second direction to abut against the yaw adjustment plate 20. The yaw adjustment bolt 42 is threadedly connected to the mounting base 41.

[0057] It is easy to understand that by rotating the yaw adjustment bolt 42, its extension and retraction relative to the mounting base 41 in the second direction can be adjusted, thereby causing the yaw adjustment plate 20 to rotate relative to the yaw axis 1.

[0058] In some embodiments, the yaw adjustment plate 20 has a slot corresponding to the yaw adjustment component 40, and part of the yaw adjustment component 40 is embedded in the slot to improve space utilization and reduce the overall volume of the optical element adjustment device of this application.

[0059] Please combine Figure 1 , Figure 2 as well as Figure 4 As shown, in some embodiments, the pitch adjustment plate 30 is provided with a clearance groove 32, the yaw adjustment plate 20 is provided with an arc groove 22 with the yaw axis 1 as the circle, the base plate 10 is provided with a threaded hole 11, the yaw locking bolt passes through the clearance groove 32 and the arc groove 22 to be threaded to the inner wall of the threaded hole 11, and the bolt head of the yaw locking bolt abuts against the top surface of the yaw adjustment plate 20.

[0060] After the yaw locking bolt is tightened, its bolt head abuts against the top surface of the yaw adjustment plate 20, and the lower thread is threaded to the inner wall of the threaded hole 11, thereby generating a locking force transmitted vertically along the first direction and fixing the base plate 10 to the yaw adjustment plate 20.

[0061] In some embodiments, the yaw locking bolt is located at the center of the yaw axis 1 and the yaw adjustment assembly 40 along the third direction to improve the clamping reliability.

[0062] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, the optical element adjustment device further includes a magnet 81, a ferromagnetic body 82, and a rotating shaft 83. The two ends of the rotating shaft 83 are respectively inserted into the base plate 10 and the yaw adjustment plate 20 and are rotatably connected to both. The yaw axis 1 is the central axis of the rotating shaft 83. The magnet 81 and the ferromagnetic body 82 are both arranged around the rotating shaft 83, and one is embedded in the base plate 10, while the other is correspondingly embedded in the yaw adjustment plate 20 along the first direction. The attraction force generated between the magnet 81 and the ferromagnetic body 82 can serve as a preload force along the first direction to prevent the yaw adjustment plate 20 and the base plate 10 from having a gap along the first direction during the yaw adjustment process.

[0063] Specifically, in some embodiments, magnet 81 is embedded in base plate 10, and ferromagnetic body 82 is embedded in yaw adjustment plate 20; more specifically, magnet 81 is neodymium iron boron magnet.

[0064] Please refer to Figure 1As shown, in some embodiments, the optical element adjustment device further includes a mounting assembly 90, which includes a mounting bracket 91 and a plurality of mounting bolts. The mounting bracket 91 is fixed to the pitch adjustment plate 30 and has a mounting hole extending through it in a third direction. The mounting bolts are distributed circumferentially along the mounting bracket 91, and each mounting bolt passes radially through the mounting bracket 91 into the mounting hole. The mounting bolts are threadedly connected to the mounting bracket 91. It is easy to understand that by rotating the mounting bolts, optical lenses of different diameters can be adapted to meet the installation requirements of optical elements of different sizes.

[0065] Of course, in some other embodiments, the optical elements may also be directly fixed to the pitch adjustment plate 30.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An optical element adjusting device characterized by comprising: include A base plate (10), a yaw adjustment plate (20), and a pitch adjustment plate (30) are arranged sequentially from bottom to top along the first direction. The yaw adjustment plate (20) is rotatably connected to the base plate (10) with the yaw axis (1) parallel to the first direction as the rotation center. The pitch adjustment plate (30) is rotatably connected to the yaw adjustment plate (20) with the pitch axis (2) parallel to the second direction as the rotation center. A yaw adjustment assembly (40) is disposed on the base plate (10) and is used to drive the yaw adjustment plate (20) to rotate around the yaw axis (1); The pitch adjustment bolt (50) is threadedly connected to the yaw adjustment plate (20) and abuts against the pitch adjustment plate (30); The pitch locking assembly (60) includes a threaded guide rod (61) and a locking nut (62). The yaw adjustment plate (20) has a first strip hole (21) extending in a third direction. The threaded guide rod (61) is rotatably connected to the pitch adjustment plate (30) with a pivot axis parallel to the second direction as its center, and passes through the first strip hole (21) in the first direction to be threadedly connected to the locking nut (62).

2. The optical element adjustment device according to claim 1, characterized by The optical element adjustment device further includes at least two ball bearings (71) and at least one spring (72). Each ball bearing (71) is located between the pitch adjustment plate (30) and the yaw adjustment plate (20) and is spaced apart along the second direction. The pitch axis (2) is the center line connecting each ball bearing (71). One end of the spring (72) is connected to the pitch adjustment plate (30), and the other end is connected to the yaw adjustment plate (20).

3. The optical element adjustment device according to claim 2, characterized by Both the yaw adjustment plate (20) and the pitch adjustment plate (30) are fixed with brass seats (73) corresponding to each of the balls (71), and each ball (71) is clamped between the two corresponding brass seats (73).

4. The optical element adjustment device according to claim 2, wherein Each of the springs (72) is arranged alternately with the ball bearings (71) along the pitch axis (2).

5. The optical element adjustment device according to claim 1, wherein The bottom surface of the pitch adjustment plate (30) is provided with a guide groove (31) extending in a third direction, and the pitch adjustment bolt (50) can abut against the inner wall of the guide groove (31).

6. The optical element adjustment device according to claim 1, wherein A set of yaw adjustment components (40) are respectively provided on both sides of the base plate (10) along the first direction. The optical element adjustment device further includes a yaw locking bolt, which passes through the yaw adjustment plate (20) and is threadedly connected to the base plate (10) to clamp and fix the yaw adjustment plate (20) and the base plate (10) in a first direction.

7. The optical element adjustment device according to claim 6, wherein The yaw adjustment assembly (40) includes a mounting base (41) and a yaw adjustment bolt (42). The mounting base (41) is fixed to the base plate (10). The yaw adjustment bolt (42) passes through the mounting base (41) along a second direction and abuts against the yaw adjustment plate (20). The yaw adjustment bolt (42) is threadedly connected to the mounting base (41).

8. The optical element adjustment device according to claim 6, wherein The pitch adjustment plate (30) has a through clearance groove (32), the yaw adjustment plate (20) has a through arc groove (22) with the yaw axis (1) as the circle, the base plate (10) has a threaded hole (11), the yaw locking bolt passes through the clearance groove (32) and the arc groove (22) to be threaded to the inner wall of the threaded hole (11), and the bolt head of the yaw locking bolt abuts against the top surface of the yaw adjustment plate (20).

9. The optical element adjustment device according to claim 1, wherein The optical element adjustment device further includes a magnet (81), a ferromagnetic body (82), and a rotating shaft (83). The two ends of the rotating shaft (83) are respectively inserted into the base plate (10) and the yaw adjustment plate (20) and are rotatably connected to both. The yaw axis (1) is the central axis of the rotating shaft (83). The magnet (81) and the ferromagnetic body (82) are both arranged around the rotating shaft (83), and one is embedded in the base plate (10), while the other is embedded in the yaw adjustment plate (20) along the first direction.

10. The optical element adjustment device according to claim 1, wherein The optical element adjustment device further includes a mounting assembly (90), which includes a mounting bracket (91) and a plurality of mounting bolts. The mounting bracket (91) is fixed to the pitch adjustment plate (30) and has a mounting hole extending through it in a third direction. Each mounting bolt is distributed circumferentially along the mounting bracket (91), and each mounting bolt extends radially through the mounting bracket (91) into the mounting hole. The mounting bolt is threadedly connected to the mounting bracket (91).

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