Pointing control device for rotating biprism light beam

Abstract

The invention discloses a pointing control device for rotating biprism light beams, which comprises a prism barrel and two refraction units, and is characterized in that the two refraction units are both mounted in the prism barrel and are symmetrically arranged; the refraction unit comprises a swing assembly, a lens frame, a biprism and a rotating assembly, and one end of the swing assembly is fixedly installed on the inner wall of the prism barrel. The first telescopic electric pole is started to drive the mirror frame and the biprism to ascend and descend; the power motor rotates to drive the bevel gear set, the auxiliary gear, the rotating gear ring, the rotating base, the rotating head and the second telescopic electric pole to rotate, and the rotating base, the rotating head and the second telescopic electric pole rotate to drive the mirror frame and the biprism to rotate. The second telescopic electric pole is controlled to stretch out and draw back to drive the base plate, the mirror frame and the biprism to swing, the swing angle of the mirror frame and the biprism is flexible, fine adjustment of the direction of the laser beam is achieved, and therefore high-precision pointing control is achieved, and the direction of the laser beam is accurately controlled.

Description

Technical Field

[0001] The invention relates to the field of optical technology, and in particular to a pointing control device for rotating a double prism light beam. Background Art

[0002] In the field of modern optical technology, rotating biprisms are often used in laser radar (LiDAR), optical measurement, and other application scenarios that require precise control of the beam direction. However, the existing technical solutions for rotating biprism beam pointing control have many shortcomings, especially the core problem of low pointing accuracy, which seriously restricts its application in high-precision measurement and precision machining.

[0003] Traditional dual-prism beam pointing control devices usually rely on mechanical structures to adjust the direction of the beam. This mechanical adjustment method, due to its own physical limitations, makes it difficult to achieve the ideal pointing accuracy in actual operation. Specifically, when the dual prism rotates, due to the existence of mechanical gaps and the accumulated errors generated during the assembly process, there is a deviation between the actual direction of the beam and the expected value. This deviation gradually accumulates with the increase of usage time, eventually causing the beam to deviate from the target area, affecting the accuracy and reliability of the measurement results.

[0004] Existing control systems have poor adaptability to environmental changes. For example, in an environment with large temperature changes, mechanical components may expand and contract, causing the originally set beam direction to change. In addition, external vibrations and other factors can also interfere with the directional stability of the beam. Current technical means are often unable to effectively compensate for these external interferences in real time, which greatly reduces the accuracy of beam pointing.

[0005] In existing technical solutions, the adjustment of beam pointing often relies on manual intervention, which is not only time-consuming and labor-intensive, but also prone to human errors. Especially when the beam direction needs to be adjusted frequently, this method obviously cannot meet the needs of efficient operation. At the same time, due to the lack of intelligent control means, it is difficult for the equipment to achieve automatic and continuous beam pointing correction when facing complex working conditions.

[0006] Considering the long-term reliability, the design of existing devices does not fully consider the impact of wear. Over time, the friction between mechanical parts will cause increased wear, which will affect the accuracy and stability of the entire system.

[0007] Therefore, how to provide a direction control device for rotating a dual prism light beam is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0008] One purpose of the present invention is to provide a pointing control device for rotating a bi-prism light beam. The present invention starts a first telescopic pole to drive the lifting and lowering of a mirror frame and a bi-prism; starts a power motor, the rotation of which drives a bevel gear set, an auxiliary driving tooth, a rotating gear ring, a rotating seat, a rotating head and a second telescopic pole to rotate; the rotation of the rotating seat, the rotating head and the second telescopic pole drives the rotation of the mirror frame and the bi-prism; and then controls the extension and retraction of the second telescopic pole to drive the base plate, the mirror frame and the bi-prism to swing at a certain angle. The swinging angle of the mirror frame and the bi-prism is relatively flexible, so that fine adjustment of the direction of the laser light beam can be achieved, thereby achieving high-precision pointing control and accurately controlling the direction of the light beam.

[0009] A pointing control device for rotating a dual prism light beam according to an embodiment of the present invention comprises a prism barrel and two refraction units, wherein the two refraction units are both installed in the prism barrel and the two refraction units are symmetrically arranged;

[0010] The refraction unit includes a swinging assembly, a frame, a double prism and a rotating assembly, wherein one end of the swinging assembly is fixedly mounted on the inner wall of the prism barrel, the other end of the swinging assembly is fixedly mounted on the outer wall of the frame, the double prism is fixedly mounted on the inner wall of the frame, one end of the rotating assembly is fixedly mounted on the inner wall of the prism barrel, and the other end of the rotating assembly is fixedly mounted on the inner wall of the frame.

[0011] Furthermore, an injection port is provided at one end of the prism tube, a refraction port is provided at the middle of the prism tube, and an emission port is provided at the other end of the prism tube.

[0012] Furthermore, the swing assembly includes two joint sleeves, the closed end of the first joint sleeve is fixedly mounted on the inner wall of the prism tube, and the closed end of the second joint sleeve is fixedly mounted on the outer wall of the frame.

[0013] Furthermore, the swing assembly also includes two first joint shafts and a telescopic rod, the two first joint shafts are respectively fixedly mounted on both ends of the telescopic rod, and the two first joint shafts are respectively movably embedded in two joint sleeves.

[0014] Furthermore, a base plate is fixedly arranged on the bottom of the mirror frame.

[0015] Furthermore, the rotating assembly includes a shaft sleeve column, a second joint shaft and a first telescopic pole, wherein the bottom of the shaft sleeve column is fixedly mounted on the inner wall of the prism tube, the second joint shaft is movably embedded in the top of the shaft sleeve column, the non-telescopic end of the first telescopic pole is fixedly mounted on the second joint shaft, and the telescopic end of the first telescopic pole is fixedly mounted on the bottom of the base plate.

[0016] Furthermore, the rotating assembly also includes a rotating gear ring, an auxiliary driving tooth and a rotating column, wherein the inner wall of the rotating gear ring is rotatably sleeved on the outer wall of the shaft sleeve column, the auxiliary driving tooth is meshed with the rotating gear ring, the bottom of the auxiliary driving tooth is rotatably installed on the top of the rotating column, and the bottom of the rotating column is fixedly installed on the inner wall of the prism barrel.

[0017] Furthermore, the rotating assembly also includes a power motor and a bevel gear set, the base of the power motor is fixedly mounted on the inner wall of the prism barrel, the input end bevel gear of the bevel gear set is fixedly mounted on the rotating shaft of the power motor, and the output end bevel gear axle of the bevel gear set is fixedly mounted on the top of the auxiliary drive tooth.

[0018] Furthermore, the rotating assembly also includes two rotating seats, the base of the first rotating seat is rotatably mounted on the bottom of the base plate, and the base of the second rotating seat is rotatably mounted on the top of the rotating gear ring.

[0019] Furthermore, the rotating assembly also includes two rotating heads and a second telescopic pole. The two rotating heads are rotatably mounted on two rotating seats respectively, and the two rotating heads are fixedly mounted on two ends of the second telescopic pole.

[0020] The beneficial effects of the present invention are:

[0021] The present invention starts the first telescopic pole to drive the lifting of the mirror frame and the double prism; starts the power motor, the rotation of the power motor drives the rotation of the bevel gear set, the auxiliary drive gear, the rotating gear ring, the rotating seat, the rotating head and the second telescopic pole, and the rotation of the rotating seat, the rotating head and the second telescopic pole drives the rotation of the mirror frame and the double prism; then, by controlling the extension and retraction of the second telescopic pole, the base plate, the mirror frame and the double prism are driven to swing at an angle, and the swing angle of the mirror frame and the double prism is relatively flexible, so that the direction of the laser light beam can be finely adjusted, thereby achieving high-precision pointing control and accurately controlling the direction of the light beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 A cross-sectional view of a prism barrel of a pointing control device for rotating a dual-prism light beam proposed by the present invention;

[0024] Figure 2 A pointing control device for rotating a double prism light beam proposed by the present invention Figure 1 A magnified image of point A;

[0025] Figure 3 A pointing control device for rotating a double prism light beam proposed by the present invention Figure 1The enlarged view of point B;

[0026] Figure 4 A pointing control device for rotating a double prism light beam proposed by the present invention Figure 1 Enlarged view of point C;

[0027] Figure 5 The present invention is a schematic diagram of the overall structure of a device for controlling the direction of a rotating dual-prism light beam.

[0028] In the figure: 1. prism tube; 1.1. injection port; 1.2. refraction port; 1.3. injection port; 2. swing assembly; 2.1. joint sleeve; 2.2. first joint axis; 2.3. telescopic rod; 3. mirror frame; 3.1. base plate; 4. double prism; 5. rotation assembly; 5.1. shaft sleeve column; 5.2. second joint axis; 5.3. first telescopic pole; 5.4. rotating gear ring; 5.5. auxiliary gear; 5.6. rotating column; 5.7. power motor; 5.8. bevel gear set; 5.9. rotating seat; 5.10. rotating head; 5.11. second telescopic pole. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] Traditional dual-prism beam pointing control devices usually rely on mechanical structures to achieve beam direction adjustment. This mechanical adjustment method, due to its own physical limitations, makes it difficult to achieve ideal pointing accuracy in actual operation. Specifically, when the dual prism rotates, due to the existence of mechanical gaps and the accumulated errors generated during the assembly process, there is a deviation between the actual pointing value of the beam and the expected value. This deviation gradually accumulates with the increase of usage time, eventually causing the beam to deviate from the target area, affecting the accuracy and reliability of the measurement results.

[0031] Existing control systems have poor adaptability when dealing with environmental changes. For example, in an environment with large temperature changes, mechanical components may expand and contract, causing the originally set beam direction to change. In addition, external vibrations and other factors can also interfere with the directional stability of the beam. Current technical means are often unable to effectively compensate for these external interferences in real time, which greatly reduces the accuracy of beam pointing.

[0032] In the existing technical solutions, the adjustment of beam pointing often relies on manual intervention, which is not only time-consuming and labor-intensive, but also prone to human errors. Especially when the beam direction needs to be adjusted frequently, this method obviously cannot meet the needs of efficient operation. At the same time, due to the lack of intelligent control means, it is difficult for the equipment to achieve automatic and continuous beam pointing correction when facing complex working conditions.

[0033] In order to solve the above problems, the following technical solutions are proposed:

[0034] Please refer to Figures 1 to 5 The present invention provides a pointing control device for rotating a double prism light beam, comprising a prism barrel 1 and two refraction units, wherein the two refraction units are both installed in the prism barrel 1, and the two refraction units are symmetrically arranged; the refraction unit comprises a swinging assembly 2, a frame 3, a double prism 4 and a rotating assembly 5, wherein one end of the swinging assembly 2 is fixedly mounted on the inner wall of the prism barrel 1, the other end of the swinging assembly 2 is fixedly mounted on the outer wall of the frame 3, the double prism 4 is fixedly mounted on the inner wall of the frame 3, two double prisms 4 are provided, and the two double prisms 4 are used for folding the light beam, one end of the rotating assembly 5 is fixedly mounted on the inner wall of the prism barrel 1, the other end of the rotating assembly 5 is fixedly mounted on the inner wall of the frame 3, the rotating assembly 5 is used for driving the frame 3 and the double prism 4 to extend and rotate, an injection port 1.1 is provided at one end of the prism barrel 1, a refraction port 1.2 is provided in the middle of the prism barrel 1, an injection port 1.3 is provided at the other end of the prism barrel 1, and a base plate 3.1 is fixedly provided at the bottom of the frame 3.

[0035] Specifically, the swing assembly 2 includes two joint sleeves 2.1, the closed end of the first joint sleeve 2.1 is fixedly mounted on the inner wall of the prism tube 1, and the closed end of the second joint sleeve 2.1 is fixedly mounted on the outer wall of the frame 3. The swing assembly 2 also includes two first joint shafts 2.2 and a telescopic rod 2.3. The two first joint shafts 2.2 are respectively fixedly mounted on the two ends of the telescopic rod 2.3. The telescopic rod 2.3 can be freely extended and retracted and is composed of a sleeve and a piston rod. The two first joint shafts 2.2 are respectively movably embedded in the two joint sleeves 2.1.

[0036] More specifically, the rotating assembly 5 includes a shaft sleeve column 5.1, a second joint shaft 5.2 and a first telescopic pole 5.3, wherein the bottom of the shaft sleeve column 5.1 is fixedly mounted on the inner wall of the prism tube 1, the second joint shaft 5.2 is movably embedded in the top of the shaft sleeve column 5.1, the non-telescopic end of the first telescopic pole 5.3 is fixedly mounted on the second joint shaft 5.2, the telescopic end of the first telescopic pole 5.3 is fixedly mounted on the bottom of the base plate 3.1, and the first telescopic pole 5.3 drives the lifting and lowering of the frame 3 and the double prism 4. The rotating assembly 5 also includes a rotating gear ring 5.4, an auxiliary tooth 5.5 and a rotating column 5.6, wherein the inner wall of the rotating gear ring 5.4 is rotatably sleeved on the outer wall of the shaft sleeve column 5.1, the auxiliary tooth 5.5 is meshed with the rotating gear ring 5.4, the bottom of the auxiliary tooth 5.5 is rotatably mounted on the top of the rotating column 5.6, and the bottom of the rotating column 5.6 is fixedly mounted on the inner wall of the prism tube 1.

[0037] The rotating assembly 5 also includes a power motor 5.7 and a bevel gear set 5.8. The base of the power motor 5.7 is fixedly mounted on the inner wall of the prism tube 1. The input end bevel gear of the bevel gear set 5.8 is fixedly mounted on the rotating shaft of the power motor 5.7. The output end bevel gear axle of the bevel gear set 5.8 is fixedly mounted on the top of the auxiliary gear 5.5. The rotating assembly 5 also includes two rotating seats 5.9. The base of the first rotating seat 5.9 is rotatably mounted on the bottom of the base plate 3.1. The base of the second rotating seat 5.9 is rotatably mounted on the rotating gear ring 5. 4, a rotating seat 5.9 is rotatably mounted on the base plate 3.1 and the rotating gear ring 5.4, the rotating assembly 5 also includes two rotating heads 5.10 and a second telescopic pole 5.11, the two rotating heads 5.10 are rotatably mounted on the two rotating seats 5.9, and the two rotating heads 5.10 are fixedly mounted at both ends of the second telescopic pole 5.11. The telescopic movement of the second telescopic pole 5.11 can drive the rotation angle of the mirror frame 3 and the double prism 4. Eight second telescopic poles 5.11 are provided, and the eight second telescopic poles 5.11 are distributed at equal angles.

[0038] Furthermore, the laser beam enters from the incident port 1.1, irradiates the first refraction unit, is then reflected by the first refraction unit to the second refraction unit, and is then reflected and irradiated from the incident port 1.3. When controlling the angle of reflection of the laser beam, it is necessary to control the rotation angle and height position of the mirror frame 3 and the double prism 4.

[0039] The first telescopic pole 5.3 is activated to drive the mirror frame 3 and the double prism 4 to rise and fall.

[0040] Start the power motor 5.7, the rotation of the power motor 5.7 drives the rotation of the bevel gear set 5.8, the rotation of the bevel gear set 5.8 drives the rotation of the auxiliary gear 5.5, the auxiliary gear 5.5 is meshed with the rotating gear ring 5.4, the rotation of the auxiliary gear 5.5 drives the rotation of the rotating gear ring 5.4, the rotating gear ring 5.4 rotates on the outer wall of the sleeve column 5.1, the rotation of the rotating gear ring 5.4 drives the rotation of the rotating seat 5.9, the rotating head 5.10 and the second telescopic pole 5.11, the rotation of the rotating seat 5.9, the rotating head 5.10 and the second telescopic pole 5.11 drives the rotation of the base plate 3.1, the frame 3 and the double prism 4.

[0041] The first joint shafts 2.2 at both ends of the telescopic rod 2.3 can be freely rotatably installed on the joint sleeve 2.1, and the telescopic rod 2.3 can be freely extended and retracted to cooperate with the extension, swing angle and rotation of the rotating component 5.

[0042] Then, by controlling the extension and retraction of the second telescopic pole 5.11, the base plate 3.1, the mirror frame 3 and the double prism 4 are driven to swing at different angles. The swing angles of the mirror frame 3 and the double prism 4 are relatively flexible, so that the direction of the laser beam can be fine-tuned, thereby achieving high-precision pointing control and accurately controlling the direction of the beam.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pointing control device for rotating a dual prism light beam, characterized in that: It comprises a prism barrel (1) and two refraction units, wherein the two refraction units are both installed in the prism barrel (1), and the two refraction units are symmetrically arranged; The refraction unit comprises a swinging assembly (2), a lens frame (3), a double prism (4) and a rotating assembly (5), wherein one end of the swinging assembly (2) is fixedly mounted on the inner wall of the prism barrel (1), the other end of the swinging assembly (2) is fixedly mounted on the outer wall of the lens frame (3), the double prism (4) is fixedly mounted on the inner wall of the lens frame (3), one end of the rotating assembly (5) is fixedly mounted on the inner wall of the prism barrel (1), and the other end of the rotating assembly (5) is fixedly mounted on the inner wall of the lens frame (3).

2. A device for controlling the direction of a rotating bi-prism light beam according to claim 1, characterized in that: An injection port (1.1) is provided at one end of the prism tube (1), a refraction port (1.2) is provided in the middle of the prism tube (1), and an emission port (1.3) is provided at the other end of the prism tube (1).

3. A device for controlling the direction of a rotating bi-prism light beam according to claim 1, characterized in that: The swing assembly (2) comprises two joint sleeves (2.1), the closed end of the first joint sleeve (2.1) being fixedly mounted on the inner wall of the prism tube (1), and the closed end of the second joint sleeve (2.1) being fixedly mounted on the outer wall of the lens frame (3).

4. A device for controlling the direction of a rotating bi-prism light beam according to claim 3, characterized in that: The swing assembly (2) further comprises two first joint shafts (2.2) and a telescopic rod (2.3); the two first joint shafts (2.2) are respectively fixedly mounted at two ends of the telescopic rod (2.3); and the two first joint shafts (2.2) are respectively movably embedded in two joint sleeves (2.1).

5. The device for controlling the direction of a rotating dual prism light beam according to claim 1, characterized in that: A base plate (3.1) is fixedly arranged at the bottom of the mirror frame (3).

6. The device for controlling the direction of a rotating dual prism light beam according to claim 1, characterized in that: The rotating assembly (5) comprises a shaft sleeve column (5.1), a second joint shaft (5.2) and a first telescopic pole (5.3), wherein the bottom of the shaft sleeve column (5.1) is fixedly mounted on the inner wall of the prism tube (1), the second joint shaft (5.2) is movably embedded in the top of the shaft sleeve column (5.1), the non-telescopic end of the first telescopic pole (5.3) is fixedly mounted on the second joint shaft (5.2), and the telescopic end of the first telescopic pole (5.3) is fixedly mounted on the bottom of the base plate (3.1).

7. A device for controlling the direction of a rotating dual prism light beam according to claim 6, characterized in that: The rotating assembly (5) further comprises a rotating gear ring (5.4), an auxiliary driving gear (5.5) and a rotating column (5.6), wherein the inner wall of the rotating gear ring (5.4) is rotatably sleeved on the outer wall of the shaft sleeve column (5.1), the auxiliary driving gear (5.5) is meshed with the rotating gear ring (5.4), the bottom of the auxiliary driving gear (5.5) is rotatably mounted on the top of the rotating column (5.6), and the bottom of the rotating column (5.6) is fixedly mounted on the inner wall of the prism tube (1).

8. A device for controlling the direction of a rotating dual prism light beam according to claim 7, characterized in that: The rotating assembly (5) further comprises a power motor (5.7) and a bevel gear set (5.8); the base of the power motor (5.7) is fixedly mounted on the inner wall of the prism tube (1); the input end bevel gear of the bevel gear set (5.8) is fixedly mounted on the rotating shaft of the power motor (5.7); and the output end bevel gear axle of the bevel gear set (5.8) is fixedly mounted on the top of the auxiliary drive gear (5.5).

9. A device for controlling the direction of a rotating dual prism light beam according to claim 8, characterized in that: The rotating assembly (5) further comprises two rotating seats (5.9), wherein the base of the first rotating seat (5.9) is rotatably mounted on the bottom of the base plate (3.1), and the base of the second rotating seat (5.9) is rotatably mounted on the top of the rotating gear ring (5.4).

10. A device for controlling the direction of a rotating dual prism light beam according to claim 9, characterized in that: The rotating assembly (5) further comprises two rotating heads (5.10) and a second telescopic pole (5.11); the two rotating heads (5.10) are rotatably mounted on two rotating seats (5.9) respectively, and the two rotating heads (5.10) are fixedly mounted at two ends of the second telescopic pole (5.11).

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