Periscope device and method of using the same

Abstract

The invention discloses a periscope device, including: a fixed component, the fixed component is connected to a lens barrel, the lens barrel is rotated based on the orientation of the fixed component to realize the use and storage of the lens barrel, the fixed component is connected to a light-collecting collimating lens component, the light-collecting collimating lens component is moved below the fixed component to focus and collimate the light beam, the fixed component is connected to an optical adjustment component, the optical adjustment component is moved below the fixed component, and the light-collecting collimating lens component cooperates with the light-collecting collimating lens component to calibrate the light path. In the present invention, the periscope device enables the experimenter to intuitively observe the focus point and perform accurate light path calibration; the periscope device and the use method thereof can realize light path calibration in a small space, eliminate the influence of light path acquisition on neutral beam component analysis, and ensure that the beam energy, beam component, and beam divergence angle of the injected neutral beam during the experiment are obtained in a timely and accurate manner.

Description

Technical Field

[0001] The present invention relates to the technical field of spectral diagnosis, and in particular to a periscope device and a method for using the periscope device. Background Art

[0002] Magnetic confinement fusion is a technology that uses a strong magnetic field to confine and control the nuclear fusion reaction of high-temperature plasma. Its basic principle is to create a stable environment so that the nuclei of light elements such as hydrogen can undergo fusion reactions under high temperature and high pressure conditions, thereby releasing a large amount of energy. Magnetic confinement fusion is widely regarded as one of the key ways to solve the global energy crisis due to its abundant raw materials, huge potential for energy output and inherent safety, and is therefore highly valued by the international community.

[0003] However, the fusion ignition conditions required to achieve magnetic confinement nuclear fusion are extremely stringent, especially the core ion temperature must exceed 10keV. In this context, neutral beam injection heating is a crucial auxiliary heating method in magnetic confinement nuclear fusion reactions. Its beam energy, beam composition, beam divergence and spatial distribution have a direct impact on the heating efficiency. Therefore, accurate diagnosis and measurement of neutral beam parameters is particularly critical. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned background technical problems and to provide a periscope device and a method of using the same.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A periscope device includes: a fixed component, the fixed component is connected to a lens barrel, the lens barrel is rotated based on the orientation of the fixed component to achieve the use and storage of the lens barrel, the fixed component is connected to a light-collecting and collimating lens component, the light-collecting and collimating lens component is moved below the fixed component to focus and collimate a light beam, the fixed component is connected to an optical adjustment component, the optical adjustment component is moved below the fixed component, and the light-collecting and collimating lens component cooperates with the light-collecting and collimating lens component to calibrate an optical path.

[0007] As a further solution of the present invention: the fixing assembly includes a storage box, the storage box is a box structure with openings on the top and one side, a through hole and a first mounting hole are provided on the bottom of the storage box, and a second mounting hole is provided on the side wall of the storage box.

[0008] As a further solution of the present invention: the storage box is connected to a wooden block at the first mounting hole by bolts, and the wooden block is connected to a guide rail slide by bolts, and the guide rail slide is a bar track structure with a raised dovetail strip at the bottom.

[0009] As a further solution of the present invention: one side of the storage box is connected to a connecting block by bolts at the second mounting hole, a strip screw hole is provided at the center of the connecting block, an observation window is welded to the connecting block, and the strip screw hole of the connecting block is coplanar with the observation lens in the observation window.

[0010] As a further solution of the present invention: the lens barrel includes a barrel body, the barrel body is rotatably connected to the storage box, and the barrel body is arranged in the first mounting hole. The barrel body can be embedded in or stand upright in the storage box by rotating.

[0011] As a further solution of the present invention: an eyepiece is arranged on the upper part of one side of the barrel, an objective lens is arranged on the lower part of the other side, a first reflector is arranged on the top, and a second reflector is arranged on the bottom, the first reflector and the second reflector are arranged at an angle, and the angles between them and the horizontal plane are both 45°.

[0012] As a further solution of the present invention: a shading plate and a light-transmitting ring are hinged at the bottom of the barrel.

[0013] As a further solution of the present invention: the light-collecting collimating lens assembly comprises an optical slide rail, the optical slide rail is slidably connected to the guide rail slide, the optical slide rail is connected to a clamp, the height of the clamp is adjustable, and a convex lens is arranged in the clamp.

[0014] As a further solution of the present invention: the optical adjustment component includes a stage, the stage is slidably connected to the guide rail slide, the stage is connected to an adjustment frame, the adjustment frame is height-adjustable, a transparent lens is arranged in the adjustment frame, a plug is connected at the center of the transparent lens, and the plug is connected to the optical fiber.

[0015] A method of using a periscope device, comprising:

[0016] S1. Rotate the lens barrel so that the barrel is perpendicular to the storage box, rotate the light-clearing ring until it is parallel to the objective lens, and rotate the light-shielding plate until it is coaxial with the light-clearing ring and parallel to each other;

[0017] S2. Fix the storage box, wooden block, guide rail slide and connecting block with bolts. At this time, the storage box is perpendicular to the observation window, and the observation window, shading plate and light-transmitting ring are coaxial. Adjust the height of the clamp and the adjustment frame so that the center of the circle is at the same height as the center of the shading plate, the center of the light-transmitting ring and the center of the observation window;

[0018] S3. Use a laser pen connected to the tail end of the optical fiber to pass light. The laser passes through the optical fiber, transparent lens, and convex lens to form a light spot on the shading plate. Adjust the screw knobs of the clamp and the adjustment frame to adjust the position of the internal convex lens and transparent lens until the divergent light spot is located at the center of the shading plate.

[0019] Move the optical slide and the stage on the guide rail slide to change the distance between the convex lens and the optical fiber, start adjusting the focal length, and simultaneously observe the light spot on the shading plate until the light spot is at its smallest and brightest state at the center of the shading plate. Fix the stage on the guide rail slide with bolts. At this time, the position of the stage is used as the light receiving position and marked. Then gradually move the optical slide to adjust the position of the convex lens, and finally make sure that the laser is projected at the center of the shading plate. At this time, the height of the light path can be determined to be consistent.

[0020] S4, retract the light shield to make it perpendicular to the objective lens, and the laser is emitted into the observation window through the light ring, and the observation point is calibrated. The observation adjustment is performed through the eyepiece, and a rectangular frame with a square grid is observed on the mirror surface of the objective lens with the center as the origin and spreading outward.

[0021] Gradually move the optical slide rail to move the convex lens back and forth for focusing. The laser enters the barrel through the objective lens and appears on the second reflector, and then reflects on the first reflector. The light spot can be observed through the eyepiece until a smallest and brightest light spot appears on the observation surface inside the observation window. Fix the optical slide rail on the guide rail slide with bolts to fix the position of the convex lens and mark this position.

[0022] S5. The storage box and the wooden block are polyphonically adjusted until the light spot reaches the light collection point required for the experiment, the position of the light spot on the grid on the objective lens is recorded, the storage box and the wooden block are fixed by bolts, and the positions of the storage box and the wooden block are marked;

[0023] S6. Fold the light-clearing ring so that it is parallel to the light-shielding plate and both are stored under the tube body. Rotate the lens barrel so that it is embedded in the storage box to eliminate the problem of the lens barrel blocking the light path and complete the light path calibration.

[0024] Beneficial effects of the present invention:

[0025] (1) In the present invention, the periscope device enables the experimenter to visually observe the focal point and perform accurate optical path calibration. During the experiment, the focal point can be quickly located and accurately adjusted to the measurement point, ensuring that the acquisition of neutral beam parameters is both accurate and reliable.

[0026] (2) In the present invention, the periscope device and its use method can realize optical path calibration in a small space, eliminate the influence of optical path acquisition on neutral beam component analysis, ensure the accuracy and reliability of the collected light beam, and ensure timely and accurate acquisition of the beam energy, beam composition, and beam divergence of the injected neutral beam during the experiment, thereby providing effective data and technical support for the diagnostic measurement of neutral beam parameters in the magnetic confinement nuclear fusion neutral beam heating system.

[0027] (3) In the present invention, improving the success rate of optical path calibration can reduce the number of times the experimenters enter the site and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic structural diagram of the periscope device of the present invention;

[0030] Figure 2 is a top view of the periscope device of the present invention;

[0031] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle tube;

[0032] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle storage box;

[0033] Figure 5 It is a flow chart of the method for using the periscope device of the present invention.

[0034] In the figure:

[0035] 1. Lens barrel; 11. Body; 12. Eyepiece; 13. Objective lens; 14. First reflector; 15. Second reflector; 16. Sunshade; 17. Light-passing ring; 2. Fixing assembly; 21. Storage box; 211. Perforation; 212. First mounting hole; 213. Second mounting hole; 22. Wooden block; 23. Guide rail; 25. Connecting block; 26. Observation window; 3. Light-collecting collimating lens assembly; 31. Optical slide; 32. Clamp; 33. Convex lens; 4. Optical adjustment assembly; 41. Adjustment frame; 42. Transparent lens; 43. Plug; 44. Optical fiber; 45. Stage. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Optical path calibration is a key step in the experimental preparation stage for accurate diagnosis and measurement of neutral beam parameters. The operator first fixes the lens and the fiber interface board on the bracket, and then uses laser focusing technology to ensure that the optical fiber is accurately aligned with the lens focal point to capture more light signals. However, in the process of installing the lens into the device, due to the narrow observation window and the obstruction of other components of the periscope, conventional optical path calibration methods are difficult to implement, resulting in problems such as focus offset, weak light collection point, light collection position deviation, and insufficient light collection. In response to this challenge, the present invention proposes a periscope device and a method of use thereof, which is suitable for optical path calibration design in narrow spaces.

[0038] See also Figure 1-Figure 2 , Figure 4 As shown, the present invention is a periscope device, including: a fixing component 2, the fixing component 2 includes a storage box 21, the storage box 21 is a box structure with openings on the top and one side, a through hole 211 and a first mounting hole 212 are opened at the bottom of the storage box 21, and a second mounting hole 213 is opened on the side wall of the storage box 21.

[0039] The storage box 21 is connected to a wooden block 22 at the first mounting hole 212 by bolts, and the wooden block 22 is connected to a guide rail slide 23 by bolts. The guide rail slide 23 is a bar track structure with a raised dovetail strip at the bottom. The dovetail strip not only enables the guide rail slide 23 to have a guiding function, but also has the function of supporting other sliding components.

[0040] Furthermore, a connecting block 25 is connected to one side of the storage box 21 at the second mounting hole 213 by bolts, and the connecting block 25 is made of stainless steel. A strip screw hole is provided at the center of the connecting block 25, and an observation window 26 is welded to the connecting block 25. The strip screw hole of the connecting block 25 is coplanar with the observation lens in the observation window 26.

[0041] See also Figure 1-Figure 2 , Figure 3 As shown, the fixing component 2 is connected to the lens barrel 1, and the lens barrel 1 can be rotated based on the orientation of the fixing component 2 to achieve the use and storage of the lens barrel 1.

[0042] Specifically, the lens barrel 1 includes a barrel 11, which is formed by welding six stainless steel sheets symmetrically in pairs. The barrel 11 is rotatably connected to the storage box 21 by a rotating sleeve. The barrel 11 is arranged in the first mounting hole 212, and the barrel 11 can be embedded or erected in the storage box 21 by rotation. The barrel wall of the barrel 11 is provided with two marked horizontal parallel lines. When the barrel 11 stands upright in the storage box 21, the two marked horizontal parallel lines are respectively located at 1 mm above and below the outer wall of the storage box 21, so that the barrel 11 and the storage box 21 can be ensured to be in a vertical state, that is, the barrel 11 stands upright in the storage box 21. During use, the barrel 11 stands upright in the storage box 21. After use, the barrel 11 can be rotated into the storage box 21 and placed for storage, which does not affect the experimental optical path, does not occupy empty space, and is convenient for experimental calibration operations.

[0043] An eyepiece 12 is arranged at the upper observation port on one side of the barrel 11, an objective lens 13 is arranged at the lower observation port on the other side, a first reflector 14 is arranged at the top, and a second reflector 15 is arranged at the bottom. The first reflector 14 and the second reflector 15 are arranged obliquely, and the angles between the first reflector 14 and the second reflector 15 and the horizontal plane are both 45°. A light shielding plate 16 and a light-transmitting ring 17 are hinged at the bottom of the barrel 11. The light shielding plate 16 and the light-transmitting ring 17 are installed 3mm to 4mm below the objective lens 13. During use, the light shielding plate 16 and the light-transmitting ring 17 are parallel to the objective lens 13, and the light shielding plate 16 and the light-transmitting ring 17 are arranged side by side and have the same center.

[0044] See also Figure 1-Figure 2 As shown, the fixed component 2 is connected to the light-collecting and collimating lens component 3, and the light-collecting and collimating lens component 3 is moved below the fixed component 2 to focus and collimate the light beam.

[0045] Among them, the light-collecting collimating lens assembly 3 includes an optical rail 31, which is slidably connected to the guide rail slide 23, and a threaded hole is set on the side of the optical rail 31, and the optical rail 31 can be fixed on the guide rail slide 23 by bolts or manual locking knobs. The optical rail 31 is connected to the clamp 32, and the height of the clamp 32 is adjustable. The height adjustment method of the clamp 32 includes but is not limited to screws with gaskets and tension springs with gaskets. A convex lens 33 is set in the clamp 32, and the convex lens 33 can be clamped by three-point positioning on the outside of the clamp 32, which can adjust the light collection direction of the convex lens 33 and firmly clamp the convex lens 33.

[0046] The fixing component 2 is also connected to the optical adjustment component 4. The optical adjustment component 4 is moved below the fixing component 2, and the light-collecting collimating lens component 3 cooperates with the light-collecting collimating lens component 3 to calibrate the optical path.

[0047] Specifically, the optical adjustment assembly 4 includes a stage 45, which is slidably connected to the guide rail slide 23. Accordingly, the stage 45 is fixed in the same manner as the optical slide 31, and a threaded hole is also provided on the side of the stage 45, so that the stage 45 can be fixed on the guide rail slide 23 by bolts or manual locking knobs. The stage 45 is connected to the adjustment frame 41, and the height of the adjustment frame 41 is adjustable. The height adjustment method of the adjustment frame 41 is the same as that of the clamp 32. In addition, three adjustment screws are provided on the outside of the clamp 32 to facilitate the three-point positioning and clamping of the internal lens structure. The adjustment frame 41 has the same structure as the clamp 32, so the specific structure of the adjustment frame 41 is not shown in detail in the figure. A transparent lens 42 is provided in the adjustment frame 41, and a plug 43 is connected to the center of the transparent lens 42, and the plug 43 is connected to the optical fiber 44. The end of the optical fiber 44 away from the plug 43 can be connected to a laser pen, and the laser emitted by the laser pen is emitted outward through the optical fiber 44.

[0048] It should be noted that the storage box 21 and the connecting block 25 are fixed vertically by bolts, and the wooden block 22 is connected to the storage box 21 and the guide rail slide 23 by bolts. Its main function is to adjust the convex lens 33, the optical fiber 44, and the observation window 26 so that the center of the convex lens 33, the center of the observation window 26, and the axis of the optical fiber 44 are in the same horizontal plane (i.e., the height is consistent), and the height of the convex lens 33, the optical fiber 44, and the observation window 26 can be adjusted according to the use needs. The raised dovetail strip at the bottom of the guide rail slide 23 can support the optical slide 31 and the stage 45, so that the movement of the convex lens 33 and the transparent lens 42 is more stable.

[0049] In this embodiment, the center of the light shielding plate 16 is coaxial with the optical fiber 44, the convex lens 33, the light ring 17, and the observation window 26, so the laser spot can be focused on the light shielding plate 16 through the convex lens 33. After the focusing is completed, during calibration, the light shielding plate 16 is retracted and perpendicular to the light ring 17, and the laser passes through the light ring 17. When the periscope device is used, the light ring 17 is retracted and parallel to the retracted light shielding plate 16, both are perpendicular to the objective lens 13, close to the outer wall of the second reflector 15, and the lens barrel 1 is stored in the storage box 21.

[0050] See also Figure 1 , Figure 5 A method of using a periscope device, comprising:

[0051] S1, rotate the lens barrel 1 to make the barrel body 11 perpendicular to the storage box 21, rotate the light-transmitting ring 17 until it is parallel to the objective lens 13, and rotate the light-shielding plate 16 until it is coaxial with the light-transmitting ring 17 and parallel to each other.

[0052] S2. Fix the storage box 21, the wooden block 22, the guide rail slide 23, and the connecting block 25 with bolts. At this time, the storage box 21 is perpendicular to the observation window 26, and the observation window 26, the shading plate 16, and the light ring 17 are coaxial. Adjust the height of the clamp 32 and the adjustment frame 41 so that the center of the circle is at the same height as the center of the shading plate 16, the center of the light ring 17, and the center of the observation window 26. Loosen the locking knobs of the optical slide 31 and the stage 45 so that the optical slide 31 and the stage 45 can move on the guide rail slide 23 to facilitate the subsequent focusing operation.

[0053] S3. Use a laser pen connected to the tail end of the optical fiber 44 to transmit light. The laser passes through the optical fiber 44, the transparent lens 42, and the convex lens 33 to form a light spot on the shading plate 16. Adjust the screw knobs of the clamp 32 and the adjustment frame 41 to adjust the position of the internal convex lens 33 and the transparent lens 42 until the divergent light spot is located at the center of the shading plate 16.

[0054] Move the optical slide 31 and the stage 45 on the guide rail slide 23 to change the distance between the convex lens 33 and the optical fiber 44, start adjusting the focal length, and simultaneously observe the light spot on the shading plate 16 until the light spot is at the smallest and brightest state at the center of the shading plate 16, and fix the stage 45 on the guide rail slide 23 with bolts. At this time, the position of the stage 45 is used as the light receiving position and is marked. Then gradually move the optical slide 31 to adjust the position of the convex lens 33, and finally determine that the laser is shot at the center of the shading plate 16, and the height of the light path can be determined to be consistent.

[0055] S4. Retract the light shielding plate 16 to make it perpendicular to the objective lens 13. The laser is emitted into the observation window 26 through the light ring 17. The observation point is calibrated. Observation and adjustment are performed through the eyepiece 12. Through the eyepiece 12, a rectangular frame with the center as the origin and spreading outward is observed on the mirror surface of the objective lens 13. There is a square grid in the rectangular frame to facilitate observation of the location of the light spot.

[0056] Gradually move the optical slide rail 31 to move the convex lens 33 back and forth for focusing. The laser enters the barrel 11 through the objective lens 13 and is presented on the second reflector 15, and then reflected on the first reflector 14. The light spot can be observed through the eyepiece 12 until a smallest and brightest light spot appears on the observation surface inside the observation window 26. The optical slide rail 31 is fixed to the guide rail slide 23 by bolts to fix the position of the convex lens 33, and this position is marked for the convenience of the next calibration.

[0057] S5. Perform polyadjustment on the storage box 21 and the wooden block 22. When polyadjusting the storage box 21 and the wooden block 22, it is necessary to loosen the bolts between the storage box 21 and the wooden block 22 so that the storage box 21 and the wooden block 22 can be adjusted left and right, but the contact surfaces of the two are in relatively close contact to avoid falling off. Until the light spot reaches the light receiving point required for the experiment, record the position of the light spot on the grid on the objective lens 13, fix the storage box 21 and the wooden block 22 with bolts, and mark the positions of the storage box 21 and the wooden block 22 for the convenience of the next calibration.

[0058] S6. Retract the light-transmitting ring 17 to make it parallel to the light-shielding plate 16, and retract them both under the barrel 11. Rotate the lens barrel 1 to embed it into the storage box 21, eliminate the problem of the lens barrel 1 blocking the light path, and complete the light path calibration.

[0059] It is understandable that the periscope device enables the experimenter to visually observe the focus point and perform accurate optical path calibration. During the experiment, the focus point can be quickly located and accurately adjusted to the measurement point, ensuring that the acquisition of neutral beam parameters is both accurate and reliable.

[0060] In the present application, the method of use can be used to calibrate the optical path in a small space, eliminate the impact of optical path acquisition on the analysis of neutral beam components, ensure the accuracy and reliability of the collected light beam, and ensure timely and accurate acquisition of the beam energy, beam components, and beam divergence of the injected neutral beam during the experiment. It provides effective data and technical support for the diagnostic measurement of neutral beam parameters in the neutral beam heating system of magnetic confinement nuclear fusion. In addition, there is ionizing radiation at the experimental site, and multiple entries will cause physical effects on the experimenter. Improving the success rate of optical path calibration can reduce the number of times the experimenter enters the site and improve work efficiency.

[0061] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A periscope device, characterized in that: include: A fixing component (2), the fixing component (2) being connected to the lens barrel (1), and the lens barrel (1) being rotated based on the orientation of the fixing component (2) so as to realize the use and storage of the lens barrel (1); The fixing component (2) is connected to a light-collecting and collimating lens component (3), and the light-collecting and collimating lens component (3) is moved below the fixing component (2) to focus and collimate the light beam; The fixing component (2) is connected to the optical adjustment component (4), and the optical adjustment component (4) is moved below the fixing component (2). The light-collecting and collimating lens component (3) cooperates with the light-collecting and collimating lens component (3) to calibrate the optical path.

2. A periscope device according to claim 1, characterized in that: The fixing assembly (2) comprises a storage box (21), the storage box (21) being a box structure with an opening on the top and one side, a through hole (211) and a first mounting hole (212) being provided on the bottom of the storage box (21), and a second mounting hole (213) being provided on the side wall of the storage box (21).

3. A periscope device according to claim 2, characterized in that: The storage box (21) is connected to a wooden block (22) at the first mounting hole (212) by bolts, and the wooden block (22) is connected to a guide rail slide (23) by bolts. The guide rail slide (23) is a bar track structure with a raised dovetail strip at the bottom.

4. A periscope device according to claim 2, characterized in that: A connecting block (25) is connected to one side of the storage box (21) at the second mounting hole (213) by means of bolts, a strip screw hole is provided at the center of the connecting block (25), an observation window (26) is welded to the connecting block (25), and the strip screw hole of the connecting block (25) is coplanar with an observation lens in the observation window (26).

5. A periscope device according to claim 2, characterized in that: The lens barrel (1) comprises a barrel body (11), the barrel body (11) being rotatably connected to the storage box (21), and the barrel body (11) being arranged in the first mounting hole (212), and the barrel body (11) can be embedded in or stand upright in the storage box (21) by rotating.

6. A periscope device according to claim 5, characterized in that: An eyepiece (12) is arranged at the upper part of one side of the barrel (11), an objective lens (13) is arranged at the lower part of the other side, a first reflector (14) is arranged at the top, and a second reflector (15) is arranged at the bottom. The first reflector (14) and the second reflector (15) are arranged at an angle, and the angles between the first reflector (14) and the second reflector (15) and the horizontal plane are both 45 degrees.

7. A periscope device according to claim 6, characterized in that: A light shielding plate (16) and a light-transmitting ring (17) are hingedly connected at the bottom of the barrel (11).

8. A periscope device according to claim 3, characterized in that: The light-collecting collimating lens assembly (3) comprises an optical slide rail (31), the optical slide rail (31) is slidably connected to the guide rail slide table (23), the optical slide rail (31) is connected to a clamp (32), the height of the clamp (32) is adjustable, and a convex lens (33) is arranged in the clamp (32).

9. A periscope device according to claim 3, characterized in that: The optical adjustment component (4) comprises a stage (45), the stage (45) is slidably connected to the guide rail slide (23), the stage (45) is connected to an adjustment frame (41), the adjustment frame (41) is height-adjustable, a transparent lens (42) is arranged inside the adjustment frame (41), a plug (43) is connected to the center of the transparent lens (42), and the plug (43) is connected to an optical fiber (44).

10. A method for using the periscope device according to any one of claims 1 to 9, characterized in that: include: S1, rotating the lens barrel (1) so that the barrel body (11) is perpendicular to the storage box (21), rotating the light-transmitting ring (17) until it is parallel to the objective lens (13), and rotating the light-shielding plate (16) until it is coaxial with the light-transmitting ring (17) and parallel to each other; S2. Fix the storage box (21), the wooden block (22), the guide rail slide (23), and the connecting block (25) by means of bolts. At this time, the storage box (21) is perpendicular to the observation window (26), and the observation window (26), the shading plate (16), and the light-transmitting ring (17) are coaxial. Adjust the height of the clamp (32) and the adjustment frame (41) so that the center of the circle is at the same height as the center of the circle of the shading plate (16), the center of the circle of the light-transmitting ring (17), and the center of the circle of the observation window (26); S3, using a laser pen connected to the tail end of the optical fiber (44) to transmit light, the laser passes through the optical fiber (44), the transparent lens (42), and the convex lens (33), and forms a light spot on the light shielding plate (16), and adjusting the screw knobs of the clamp (32) and the adjustment frame (41) to adjust the positions of the internal convex lens (33) and the transparent lens (42) until the position of the divergent light spot is located at the center of the light shielding plate (16); Move the optical slide rail (31) and the stage (45) on the guide rail slide (23) to change the distance between the convex lens (33) and the optical fiber (44), start adjusting the focal length, and simultaneously observe the light spot on the shading plate (16) until the light spot is at its smallest and brightest state at the center of the shading plate (16), and fix the stage (45) on the guide rail slide (23) by bolts. At this time, the position of the stage (45) is used as the light receiving position and is marked; then gradually move the optical slide rail (31) to adjust the position of the convex lens (33), and finally determine that the laser is projected at the center of the shading plate (16), and at this time, the height of the light path can be determined to be consistent; S4, retract the light shielding plate (16) to make it perpendicular to the objective lens (13), and the laser is emitted into the observation window (26) through the light ring (17), and the observation point is calibrated, and the observation adjustment is performed through the eyepiece (12). Through the eyepiece (12), it is observed that a rectangular frame with a center as the origin and spreading outward appears on the mirror surface of the objective lens (13), and a square grid is present in the rectangular frame; The optical slide rail (31) is gradually moved to move the convex lens (33) back and forth for focusing. The laser enters the barrel (11) through the objective lens (13) and is presented on the second reflector (15). It is then reflected on the first reflector (14). The light spot can be observed through the eyepiece (12) until a minimum and brightest light spot is presented on the observation surface inside the observation window (26). The optical slide rail (31) is fixed to the guide rail slide (23) by bolts to fix the position of the convex lens (33), and this position is marked. S5, polyphonically adjust the storage box (21) and the wooden block (22) until the light spot reaches the light receiving point required for the experiment, record the position of the light spot on the grid on the objective lens (13), fix the storage box (21) and the wooden block (22) by bolts, and mark the positions of the storage box (21) and the wooden block (22); S6, retract the light-transmitting ring (17) so that it is parallel to the light shielding plate (16), and both are retracted under the barrel (11), and the lens barrel (1) is rotated so that it is embedded in the storage box (21), thereby eliminating the problem of the lens barrel (1) blocking the light path, and completing the light path calibration.

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