Mirror surface adjusting device

Abstract

The invention relates to the technical field of optical devices, in particular to a mirror surface adjusting device which comprises a rack. The adjusting assembly is rotationally connected to the rack and used for bearing the mirror surface, the adjusting assembly has two rotational degrees of freedom, and the two rotational central axes of the adjusting assembly intersect on a first plane; the driving assembly is movably connected to the rack, the output end of the driving assembly is movably connected with the adjusting assembly, the driving assembly drives the adjusting assembly to rotate in a centering mode, and the center of the mirror surface is overlapped with the rotating center of the adjusting assembly. Therefore, the adjustment accuracy and stability of the reflection angle are ensured, the influence of tiny deviation on the propagation path of the laser beam is reduced, the reflection angle of the laser beam is accurately adjusted by ensuring the constant position of the center point of the mirror surface in the rotating process, and the requirement of high-precision optical application is met.

Description

Technical Field

[0001] The present invention relates to the technical field of optical devices, and in particular to a mirror adjustment device. Background Art

[0002] Specular reflection is a crucial component in laser technology and applications. Specular reflection occurs when light is reflected from a smooth surface (such as a mirror) in such a way that the reflected light remains parallel to the direction of the incident light. This property makes specular reflection crucial in applications such as laser guidance, laser ranging, and laser projection.

[0003] Due to the design limitations of existing adjustment devices, operators often struggle to precisely control the amount of adjustment required when making angle adjustments. This results in significant changes in the mirror angle, making it difficult to precisely control the laser beam's reflection path. This prevents the laser beam from accurately reflecting to the intended target, significantly reducing positioning accuracy and impacting the overall performance of the laser system. Furthermore, improper adjustment of the laser beam can cause it to strike the edge of the mirror, generating thermal stress that can cause cracks or breakage. This not only impacts the performance of the laser system but also increases maintenance costs and safety risks. Summary of the Invention

[0004] The purpose of the present invention is to provide a mirror adjustment device to solve the problem of low precision of the mirror adjustment device in the prior art.

[0005] The technical solution of the present invention is: a mirror adjustment device, comprising: a frame; an adjustment component, rotatably connected to the frame, for supporting the mirror, the adjustment component having two rotational degrees of freedom, and the two rotational central axes of the adjustment component intersecting at a first plane; a drive component, movably connected to the frame, the output end of the drive component movably connected to the adjustment component, the drive component driving the adjustment component to rotate in a centering manner, and the center of the mirror overlaps with the rotation center of the adjustment component.

[0006] Preferably, the drive assembly has two translational degrees of freedom, wherein the drive assembly moves in a vertical direction to drive the adjustment assembly to rotate about a horizontal axis, and wherein the drive assembly moves in a horizontal direction to drive the adjustment assembly to rotate about a vertical axis.

[0007] Preferably, the adjustment assembly includes a support frame and a support seat, the support frame is rotatably connected to the frame, the support seat is rotatably connected to the support frame, the rotational axis of the support seat and the rotational axis of the support frame are located in the first plane and intersect, and the support seat is movably connected to the driving assembly.

[0008] Preferably, the support frame is provided with a housing cavity for supporting the mirror, the support seat is provided with a conducting hole connected to the housing cavity, and the intersection of the horizontal axis and the vertical axis of the adjustment component overlaps with the center of the conducting hole.

[0009] Preferably, the support seat is fixed with a connecting rod, the central axis of the connecting rod, the center of the support frame and the center of the support seat are coaxially arranged, and the end of the connecting rod away from the support seat is movably connected to the drive assembly through a fisheye bearing.

[0010] Preferably, the driving assembly includes a carrier frame, which is slidably connected to the frame; the carrier frame is slidably connected to a support frame, the adjustment assembly is movably connected to the support frame, the sliding trajectory of the support frame and the sliding trajectory of the carrier frame are both located on the same plane, and the sliding direction of the support frame is set at an angle to the sliding direction of the carrier frame.

[0011] Preferably, the rotation axis of the support seat intersects perpendicularly with the rotation axis of the support frame, the linear sliding trajectory of the carrier is parallel to the rotation axis of the support frame, and the linear sliding trajectory of the support frame is parallel to the rotation axis of the support seat.

[0012] Preferably, the frame is provided with a first driving member, the output end of the first driving member is connected to the supporting frame, and the output end of the first driving member moves along the central axis direction of the supporting frame; the support frame is provided with a second driving member, the output end of the second driving member is connected to the top of the supporting frame, and the second driving member drives the support frame to move along the central axis direction of the supporting frame.

[0013] Compared with the prior art, the advantages of the present invention are: (1) Since the two rotational axes of the adjustment component intersect at the first plane, which is the center point of the mirror carried on the adjustment component, the driving component controls the centering rotation of the adjustment component, thereby controlling the centering rotation of the mirror. The center point will remain in the same position, thereby ensuring the accuracy and stability of the reflection angle adjustment, reducing the impact of small deviations on the laser beam propagation path, and ensuring the constant position of the mirror center point during the rotation process. The precise adjustment of the laser beam reflection angle is achieved to meet the needs of high-precision optical applications.

[0014] (2) The two translational degrees of freedom correspond to two rotational degrees of freedom, which independently control the two rotation angles of the mirror. This allows the mirror angle to be adjusted more accurately to control the rotation in each direction without being disturbed by the rotation in the other direction. This reduces the risk of failure of the entire system due to a failure of a certain part, improves the reliability and stability of the overall structure, and enables the optical device to maintain high performance in various complex environments.

[0015] (3) The driving assembly transmits power to the connecting rod through the fisheye bearing, thereby controlling the centering rotation of the support frame and the support seat, and realizing flexible adjustment of the mirror position or posture. The vertical intersection of the rotation axis of the support seat and the rotation axis of the support frame helps to maintain the stability of the support seat during the rotation process, avoids unnecessary shaking or deviation, ensures the accuracy and consistency of the motion trajectory, and thus improves the accuracy of the mirror adjustment, so that the laser beam is adjusted near the middle range of the mirror, avoiding the situation where the laser beam hits the edge of the mirror and causes damage to the mirror.

[0016] (4) The first driving member drives the carrier to move, and the connecting rod swings relative to the support frame in the direction of the rotation center axis of the support frame through the fisheye bearing, and the connecting rod drives the support seat to rotate relative to the support frame. The second driving member drives the support frame to move, and the connecting rod swings relative to the support frame in the direction of the rotation center axis of the support seat through the fisheye bearing, and the connecting rod drives the support frame and the support seat as a whole to rotate relative to the frame. When the first driving member and the second driving member are driven at the same time, the center point of the mirror located in the carrier will remain in the same position, further ensuring the accuracy and stability of the adjustment of the laser beam reflection angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural schematic diagram of a mirror adjustment device according to the present invention; Figure 2 This is a schematic cross-sectional view of a mirror adjustment device according to the present invention; Figure 3 This is a schematic structural diagram of the support frame of the present invention; Figure 4 This is a schematic structural diagram of the matching relationship between the support frame and the support base of the present invention; Figure 5 This is a schematic structural diagram of the drive assembly of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the drive assembly of the present invention.

[0018] Description of reference numerals: 1. Frame; 11. First bracket; 12. Second bracket; 13. Third bracket; 2. Adjustment assembly; 21. Support frame; 211. First rotating shaft; 212. Second rotating shaft; 213. Third rotating shaft; 214. Fourth rotating shaft; 215. Guide hole; 22. Support seat; 221. Accommodating cavity; 23. First guide member; 24. Second guide member; 25. Connecting rod; 3. Drive assembly; 31. Carrying frame; 32. Support frame; 33. First slide rail; 34. Second slide rail; 35. Fisheye bearing; 36. First driving member; 37. Second driving member; 38. Baffle; 39. Frame; 4. Mirror. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figure 1 and Figure 2 As shown, a mirror adjustment device includes a frame 1, an adjustment component 2 and a drive component 3. The adjustment component 2 is used to carry the mirror 4. The adjustment component 2 is rotatably connected to the frame 1 and is used to adjust the mirror 4. The drive component 3 is movably connected to the adjustment component 2. The drive component 3 drives the adjustment component 2 to rotate, so that the adjustment component 2 drives the mirror 4 to rotate, adjusts the inclination angle of the mirror 4, and thus adjusts the reflection angle of the laser beam.

[0023] Adjustment assembly 2 has two rotational degrees of freedom, that is, two central axes of rotation. Both axes of rotation lie in a first plane, intersecting each other, and adjustment assembly 2 rotates about this intersection. Drive assembly 3 is movably connected to frame 1 and has two translational degrees of freedom. Drive assembly 3 translates vertically and horizontally, with both vertical and horizontal trajectories lying in a second plane parallel to the first plane. Drive assembly 3 drives adjustment assembly 2 to center its rotation, thereby centering mirror surface 4 located within adjustment assembly 2.

[0024] It is worth noting that the first plane can be any plane. In this embodiment, the first plane is a vertical plane where one of the rotation axes of the adjustment component 2 is located, and the second plane is parallel to the first plane and is located a certain distance to the left (or right) of the first plane.

[0025] A first bracket 11 and a second bracket 12 are fixedly connected to the frame 1. The first bracket 11 and the second bracket 12 are arranged parallel to each other, with space for assembling the adjustment assembly 2 left between the first bracket 11 and the second bracket 12. Specifically, the first bracket 11 is rotatably connected to a first rotating shaft 211 via a ball bearing, and the second bracket 12 is rotatably connected to a second rotating shaft 212 via a ball bearing. The rotational axis of the first rotating shaft 211 and the rotational axis of the second rotating shaft 212 are coaxial and lie on the first plane.

[0026] like Figure 3 and Figure 4 As shown, the adjustment assembly 2 includes a support frame 21 and a support base 22. A first rotating shaft 211 and a second rotating shaft 212 are both fixedly connected to the outer wall of the support frame 21. The axis along which the central axis of rotation of the first rotating shaft 211 and the central axis of rotation of the second rotating shaft 212 lie is the central axis of rotation of the support frame 21. The support frame 21 defines a through hole 215. The central axis of the through hole 215 is perpendicular to the central axis of rotation of the support frame 21. That is, the central axis of the through hole 215 intersects the central axis of rotation of the support frame 21 on a first plane, and the intersection of the two rotational degrees of freedom of the adjustment assembly 2 coincides with the center of the through hole 215.

[0027] The support base 22 is rotatably connected to the support frame 21. Specifically, a third rotating shaft 213 and a fourth rotating shaft 214 are fixedly mounted on the outer wall of the support frame 21. The rotational axis of the third rotating shaft 213 and the rotational axis of the fourth rotating shaft 214 are coaxially arranged. The rotational axes of the third rotating shaft 213 and the fourth rotating shaft 214, as well as the rotational axis formed by the first rotating shaft 211 and the second rotating shaft 212, intersect in a first plane. The support base 22 is rotatably connected to the support frame 21 via the three rotating shafts and the fourth rotating shaft 214. Specifically, the support base 22 is partially located within the guide hole 215 of the support frame 21, and a certain distance is provided between the outer wall of the support base 22 and the inner wall of the support frame 21. This prevents interference between the support base 22 and the support frame 21 when the support base 22 rotates relative to the support frame 21.

[0028] In this embodiment, the outer wall of the support base 22 is provided with a first guide member 23 and a second guide member 24. The first guide member 23 and the second guide member 24 are arranged opposite each other and fixedly connected to the outer wall of the support base 22. The first guide member 23 and the second guide member 24 both protrude toward the outer wall away from the support base 22. The first guide member 23 is rotatably connected to the third rotating shaft 213 via a bearing, and the first guide member 23 abuts the top outer wall of the support frame 21. The second guide member 24 rotates with the fourth rotating shaft 214 via a bearing, and the second guide member 24 abuts the bottom outer wall of the support frame 21. The first guide member 23 and the second guide member 24 serve to bear the weight of the support base 22. The rotational central axis of the third rotating shaft 213 and the rotational central axis of the fourth rotating shaft 214 are the rotational central axis of the support base 22. That is, the rotational central axis of the support base 22 intersects the rotational central axis of the support frame 21.

[0029] Specifically, the support seat 22 is provided with a accommodating cavity 221 and an opening, and the opening connects the accommodating cavity 221 and the conducting hole 215. Preferably, the accommodating cavity 221 is a cylindrical cavity, and the central axis of the accommodating cavity 221 is coaxial with the central axis of the conducting hole 215. The mirror 4 is placed in the accommodating cavity 221. The mirror 4 is a circular lens with a certain thickness. The outer peripheral side of the mirror 4 abuts the inner wall of the accommodating cavity 221. The center point of the mirror 4 is the intersection point of the rotation central axis of the support seat 22 and the rotation central axis of the support frame 21. That is, the operator realizes the centering rotation of the mirror 4 by rotating the support seat 22 and the support frame 21.

[0030] like Figure 5 and Figure 6 As shown, the driving component 3 has two mutually perpendicular translational degrees of freedom in the second plane. The driving component 3 is movably connected to the adjustment component 2. The motion trajectory of one translational degree of freedom is parallel to the rotational axis of the support frame 21, and the motion trajectory of the other translational degree of freedom is parallel to the rotational axis of the support seat 22. That is, one translational degree of freedom controls one rotational degree of freedom, and the other translational degree of freedom controls the other rotational degree of freedom.

[0031] Specifically, the driving assembly 3 includes a carrier frame 31 and a first slide rail 33. The first slide rail 33 is fixedly connected to the frame 1. The central axis of the first slide rail 33 is parallel to the rotation central axis of the support frame 21, and the central axis of the first slide rail 33 is located on the second plane. The carrier frame 31 is slidingly connected to the first slide rail 33, that is, the carrier frame 31 is slidingly connected to the frame 1 along the length direction of the first slide rail 33.

[0032] The cross-section of the carrier frame 31 is "L"-shaped. The horizontal portion of the carrier frame 31 is slidably connected to the first slide rail 33. The vertical portion of the carrier frame 31 is fixed with a second slide rail 34. The second slide rail 34 is arranged in the vertical direction. The second slide rail 34 is slidably connected to the support frame 32, so that the support frame 32 slides in the vertical direction. The central axis of the second slide rail 34 is arranged parallel to the rotational central axis of the support seat 22, that is, the support frame 32 slides with the carrier frame 31 along the central axis direction of the second slide rail 34. The central axis of the second slide rail 34 is located on the second plane. Preferably, the central axis of the second slide rail 34 is arranged perpendicular to the central axis of the first slide rail 33. Within the length range of the first slide rail 33 and the length range of the second slide rail 34, the output end of the support frame 32 can move arbitrarily on the second plane.

[0033] A connecting rod 25 is fixedly mounted on the end surface of the support base 22 facing away from the support frame 21. The end of the connecting rod 25 away from the support base 22 is movably connected to the drive assembly 3. The central axis of the connecting rod 25, the center of the support frame 21, and the center of the support base 22 are coaxially arranged. The drive assembly 3 controls the rotation of the support base 22 and the support frame 21 via the connecting rod 25. Preferably, the support frame 32 has a built-in fisheye bearing 35, and the connecting rod 25 is movably connected to the support frame 32 via the fisheye bearing 35.

[0034] Specifically, the support frame 32 is fixed with a frame body 39 for supporting the fisheye bearing 35. The inner wall of the frame body 39 is an arc surface. Preferably, the fisheye bearing 35 is a sphere, and more preferably, the fisheye bearing 35 is an ellipsoid. The fisheye bearing is movably embedded in the frame body 39, that is, the fisheye bearing 35 rotates within the frame body 39, and the frame body 39 restricts the fisheye bearing 35 from separating from the frame body 39. Preferably, the frame body 39 is a plate-like structure, and both ends of the fisheye bearing 35 can be exposed outside the frame body 39. The connecting rod 25 is slidably connected to the fisheye bearing 35, that is, the connecting rod 25 movably passes from one end of the fisheye bearing 35 to the other end.

[0035] When the carrier 31 slides relative to the first slide rail 33, the fisheye bearing 35 rotates horizontally, the connecting rod 25 slides relative to the fisheye bearing 35, and the connecting rod 25 simultaneously drives the support base 22 to rotate along its vertical axis. When the support base 32 slides relative to the second slide rail 34, the fisheye bearing 35 rotates vertically, the connecting rod 25 slides relative to the fisheye bearing 35, and the connecting rod 25 simultaneously drives the support base 22 to rotate along its horizontal axis. The carrier 31 and support base 32 can rotate simultaneously, and the angle of the support base 22 can be adjusted simultaneously.

[0036] The frame 1 is fixedly connected to a third bracket 13, which is disposed on the side of the first slide rail 33 facing away from the first bracket 11. A first driver 36 is fixedly connected to the third bracket 13, and the output end of the first driver 36 moves parallel to the central axis of the first slide rail 33. The carrier 31 is fixedly connected to a baffle 38. In this embodiment, the baffle 38 is fixedly connected to the output end of the first driver 36. The first driver 36 drives the baffle 38 to move, thereby driving the carrier 31 relative to the first slide rail 33. In other embodiments, the baffle 38 is located in the movement path of the output end of the first driver 36. The baffle 38 is provided with a spring, one end of which is fixedly connected to the third bracket 13 and the other end to the baffle 38. The first driver 36 cooperates with the spring to control the movement of the baffle 38. In this embodiment, the first driver 36 is a cylinder; in other embodiments, the first driver 36 can be a screw.

[0037] A second driver 37 is fixed to the support frame 32. The output end of the second driver 37 faces the carrier frame 31 and is parallel to the central axis of the second slide rail 34, that is, it is arranged vertically. In this embodiment, the second driver 37 is a pneumatic cylinder, and its piston rod abuts against the carrier frame 31, facilitating quick assembly and disassembly of the second driver 37. Due to gravity, the end of the piston rod of the second driver 37 always abuts the upper end surface of the horizontal portion of the carrier frame 31. When the cylinder of the second driving member 37 is upward relative to the piston rod of the second driving member 37, the second driving member 37 lifts the support frame 32, that is, the piston rod of the second driving member 37 is stationary relative to the supporting frame 31, and the cylinder of the second driving member 37 drives the support frame 32 to slide in the vertical direction relative to the second slide rail 34; when the cylinder of the second driving member 37 is downward relative to the piston rod of the second driving member 37, the second driving member 37 drives the support frame 32 to descend; in other embodiments, the piston rod of the second driving member 37 is fixedly connected to the supporting frame 31 to ensure the accuracy of the movement of the support frame 32.

[0038] Principle of operation: The first driving member 36 drives the carrier 31 to move, and the connecting rod 25 swings relative to the support frame 32 in the direction of the rotational axis of the support frame 21 via the fisheye bearing 35. The connecting rod 25 drives the support seat 22 to rotate relative to the support frame 21, that is, the support seat 22 rotates about its own rotational axis. The second driving member 37 drives the support frame 32 to move, and the connecting rod 25 swings relative to the support frame 32 in the direction of the rotational axis of the support seat 22 via the fisheye bearing 35. The connecting rod 25 drives the support frame 21 and the support seat 22 to rotate as a whole relative to the first bracket 11 and the second bracket 12, that is, the support frame 21 and the support seat 22 rotate as a whole about the rotational axis of the support frame 21. Because the rotational axes of the support frame 21 and the support frame 32 intersect at a point, namely, the center point of the mirror 4, when the first driving member 36 and the second driving member 37 are driven simultaneously, the center point of the mirror 4 located within the carrier 31 will remain in the same position, ensuring the accuracy and stability of the adjustment of the laser beam reflection angle.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A mirror adjustment device, characterized in that: include: Rack(1); An adjustment component (2) is rotatably connected to the frame (1) and is used to carry the mirror surface (4); the adjustment component (2) has two rotational degrees of freedom, and two rotational central axes of the adjustment component (2) intersect in a first plane; A drive component (3) is movably connected to the frame (1); an output end of the drive component (3) is movably connected to the adjustment component (2); the drive component (3) drives the adjustment component (2) to rotate in a centered manner; and the center of the mirror surface (4) overlaps with the rotation center of the adjustment component (2).

2. A mirror adjustment device according to claim 1, characterized in that: The drive assembly (3) has two translational degrees of freedom, wherein the drive assembly (3) moves in a vertical direction to drive the adjustment assembly (2) to rotate about a horizontal axis, and wherein the drive assembly (3) moves in a horizontal direction to drive the adjustment assembly (2) to rotate about a vertical axis.

3. A mirror adjustment device according to claim 1, characterized in that: The adjustment assembly (2) comprises a support frame (21) and a support seat (22); the support frame (21) is rotatably connected to the frame (1); the support seat (22) is rotatably connected to the support frame (21); a rotation center axis of the support seat (22) and a rotation center axis of the support frame (21) are located in the first plane and intersect each other; and the support seat (22) is movably connected to the drive assembly (3).

4. A mirror adjustment device according to claim 3, characterized in that: The support frame (21) is provided with a receiving cavity (221) for supporting the mirror surface (4), the support seat (22) is provided with a conducting hole (215) in communication with the receiving cavity (221), and the intersection of the horizontal axis and the vertical axis of the adjustment component (2) overlaps with the center of the conducting hole (215).

5. A mirror adjustment device according to claim 4, characterized in that: The support seat (22) is fixedly provided with a connecting rod (25), the central axis of the connecting rod (25), the center of the support frame (21) and the center of the support seat (22) are coaxially arranged, and one end of the connecting rod (25) away from the support seat (22) is movably connected to the driving assembly (3) via a fisheye bearing (35).

6. A mirror adjustment device according to claim 3, characterized in that: The driving assembly (3) comprises a bearing frame (31), and the bearing frame (31) is slidably connected to the frame (1); The bearing frame (31) is slidably connected to the support frame (32), the adjustment assembly (2) is movably connected to the support frame (32), the sliding track of the support frame (32) and the sliding track of the bearing frame (31) are both located on the same plane, and the sliding direction of the support frame (32) is set at an angle to the sliding direction of the bearing frame (31).

7. A mirror adjustment device according to claim 6, characterized in that: The rotation center axis of the support seat (22) intersects perpendicularly with the rotation center axis of the support frame (21); the linear sliding track of the carrier frame (31) is parallel to the rotation center axis of the support frame (21); and the linear sliding track of the support frame (32) is parallel to the rotation center axis of the support seat (22).

8. A mirror adjustment device according to claim 6, characterized in that: The frame (1) is provided with a first driving member (36), the output end of which is connected to the support frame (31), and the output end of which moves along the central axis direction of the support frame (31); the support frame (32) is provided with a second driving member (37), the output end of which is connected to the top of the support frame (31), and the second driving member (37) drives the support frame (32) to move along the central axis direction of the support frame (31).

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