Large-aperture large-range arc-second-level intense laser multi-optical-axis parallelism testing machine

Abstract

The invention relates to the technical field of optical equipment testing, and particularly discloses a large-caliber large-range second-of-arc intense laser multi-optical-axis parallelism testing machine which comprises a light pipe body, a light inlet and a light outlet, a supporting table is arranged at the end, close to the light inlet, of the light pipe body, and a three-dimensional adjusting frame is installed at the top of the supporting table; a focal plane observation system is installed in the light outlet, a two-dimensional adjusting frame is installed at the end, close to the light outlet, of the light pipe body, and a trepanning diaphragm plate is installed at the top of the two-dimensional adjusting frame. A second driving assembly is installed at the end, away from the rotating table, of the lifting table, a first driving assembly is installed at the end, below the second driving assembly, of the bottom plate, and a third driving assembly is installed at the end of the inclined plate. According to the invention, a series of structures are arranged, so that the testing machine can carry out large-aperture multi-optical-axis synchronous testing, manual or servo numerical control operation is carried out by means of the three-dimensional adjusting frame, the position of a to-be-detected product is adjusted, large-range and small-range precision adjustment is satisfied, and the testing precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical equipment testing, and particularly to a large-aperture, large-range, angular-second-level, high-power laser multi-optical-axis parallelism testing machine. Background Art

[0002] Multi-optical-axis systems (such as high-energy laser weapons, space laser communications, precision optical aiming devices, etc.) need to ensure strict parallelism between each optical axis to ensure energy concentration, signal transmission accuracy, and system reliability.

[0003] However, when testing the parallelism of multi-optical-axis systems, traditional parallelism testing equipment is limited by the following bottlenecks: In the scenarios of large aperture (>200 mm), high-power laser (>10 kW), and multi-optical axis (≥3 axes), existing equipment cannot be applied to large-aperture tests. Especially when installing a multi-optical-axis product to be detected on a detection platform, if the light inlet of the equipment is small, the number of optical axes that meet the test requirements will also be small, and thus the test range will become smaller. Moreover, the existing product installation platform has relatively single functionality. For example, a conventional product installation platform only has functions such as up-and-down lifting or left-and-right adjustment. The actual adjustment method is relatively conventional, lacking corresponding angle adjustment functions. In the case where the tilt angle cannot be changed, the flexibility of position adjustment is poor, and the actual angle deviation control range will become larger, which will in turn affect the test range and even the test accuracy of the subsequent test system. Summary of the Invention

[0004] The purpose of the present invention is to provide a large-aperture, large-range, angular-second-level, high-power laser multi-optical-axis parallelism testing machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A large-aperture, large-range, angular-second-level, high-power laser multi-optical-axis parallelism testing machine, including an optical tube main body, a light inlet at one end of the optical tube main body, and a light outlet at the other end of the optical tube main body. A support platform is provided at the end of the optical tube main body adjacent to the light inlet. The light passing diameter of the light inlet is 400 mm. A three-dimensional adjustment frame is installed on the top of the support platform. A focal plane observation system is installed inside the light outlet. A two-dimensional adjustment frame is installed at the end of the optical tube main body adjacent to the light outlet. A sleeve aperture diaphragm plate is installed on the top of the two-dimensional adjustment frame. The three-dimensional adjustment frame includes a bottom plate, a lifting table, and an inclined plate. The bottom plate is installed on the top of the support table. A scissor lifting assembly is installed on the top of the bottom plate. The lifting table is installed on the top of the scissor lifting assembly. A rotating table is installed at the edge position of the top surface of the lifting table. An inclined plate is movably installed on the rotating table. A swing assembly is installed between the bottom of the inclined plate on one side of the rotating table and the top of the lifting table. The top of the inclined plate is movably installed with a tabletop through a sliding assembly, and an optical aiming system is installed on the tabletop. A second driving assembly is installed at one end of the lifting table away from the rotating table. A first driving assembly is installed at one end of the bottom plate below the second driving assembly. A third driving assembly is installed at the end of the inclined plate.

[0006] Preferably, the second driving assembly and the first driving assembly are arranged parallel to each other vertically, and the second driving assembly and the third driving assembly are arranged vertically and offset from each other. The scissor lifting assembly, the swing assembly, and the sliding assembly are all installed with actuating components, and the first driving assembly, the second driving assembly, and the third driving assembly respectively provide power sources for the actuating components.

[0007] Preferably, the swing assembly includes a sliding table and a pressing table. The sliding table is slidably installed at the top end of the lifting table between the second driving assembly and the rotating table. The pressing table is movably installed at the bottom of the inclined plate on one side of the rotating table. The pressing table and the sliding table are in contact with each other vertically, and the contact surfaces are all inclined surfaces.

[0008] Preferably, a plurality of support bases are installed at the bottom of the light tube body, and vibration isolation feet are installed between the support bases and the light tube body.

[0009] Preferably, a plurality of mounting holes are equidistantly arranged at the top end of the tabletop, and a portal frame is installed at the edge position of the top surface of the tabletop adjacent to the light inlet. The optical aiming system is installed on the portal frame.

[0010] Preferably, an assembly sliding table is installed at the bottom of the tabletop. An assembly groove is arranged at the top of the assembly sliding table. The assembly groove is in limit assembly with the bottom of the tabletop, and one end of the assembly groove is open. A top block is installed at the end of the assembly sliding table away from the opening of the assembly groove. An electromagnetic elastic part is installed inside the assembly sliding table adjacent to the opening of the assembly groove.

[0011] Preferably, the first driving assembly, the second driving assembly, and the third driving assembly are all composed of a sliding sleeve, a clamping shaft sleeve, and a screwing head. A through hole is vertically penetrated inside the sliding sleeve. A plug shaft is movably installed inside the through hole. A screwing head is installed at the end of the plug shaft away from the actuating component. A clamping shaft sleeve is installed on the inner side wall of the screwing head through a bearing.

[0012] Preferably, the clamping shaft sleeve is a square structural part, and a square inner groove is arranged at the end of the sliding sleeve adjacent to the clamping shaft sleeve. A square shaft is installed at one end of the plug shaft away from the screwing head.

[0013] Preferably, the three groups of the execution components are all lead screw components. The sliders of the three groups of lead screw components are respectively connected to the scissor lift component, the sliding table and the sliding component. Sleeve shafts are installed at the ends of the lead screws of the lead screw components. Square inner grooves are arranged at the ends of the sleeve shafts, and the square inner grooves are used in cooperation with the square shafts at one ends of the insertion shafts.

[0014] Preferably, a bracket is installed between the lead screw component and the sliding sleeve, and a protective shell is installed on the bracket. The square shaft and the sleeve shaft are both inside the protective shell. A servo motor is installed at the top of the protective shell. The output shaft of the servo motor extends into the protective shell, and a bevel gear set is installed between the output shaft of the servo motor and the sleeve shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For this large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism tester, by means of the 400-mm large-aperture light inlet, calculated according to the 30-mm aperture of the conventional model product, the optical axis consistency of 2-10 groups of products can be adjusted simultaneously, achieving the purpose of multi-optical axis synchronous detection. Under the action of the three-dimensional adjustment frame, the product to be detected can be adjusted three-dimensionally under the conditions of up-and-down lifting, pitching and yawing, and translational requirements. Combined with the existing aiming system, the practicability of the entire tester can be increased while improving the test accuracy.

[0016] 2. For this large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism tester, by combining the first driving component and the scissor lift component, the height adjustment in the up-and-down direction can be provided for the entire three-dimensional adjustment frame. Under the action of the rotating table, the tabletop equipped with the product to be tested can perform pitching and yawing operations. When the sliding table moves left and right, the tightening table is tightened, providing the power source required for the tilting movement of the tabletop.

[0017] 3. For this large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism tester, through the assembly groove, the tabletop can be limited and assembled on the assembly sliding table. With the assistance of the electromagnetic elastic part and the top block, the left and right limit assembly can be carried out, which is convenient for replacing the entire tabletop. The product to be detected can be installed on the tabletop in advance. When performing batch testing of multiple optical axes, the batches of the products to be detected can be directly replaced by replacing the tabletop, improving the detection efficiency.

[0018] 4. This large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism tester uses a combination of an inserted shaft and a sleeve shaft. The two can be relatively separated or sleeved. When sleeved, it is convenient for manual operation to directly drive the screw to rotate, which is suitable for rapid manual position adjustment operations in the enabled state. After adjusting to the appropriate orientation, the sleeve shaft and the inserted shaft can be separated. The servo motor is used to drive the helical gear set to move. With the large transmission ratio of the helical gear set, high-precision angle adjustment is carried out to drive the screw for high-precision adjustment. Different from the existing simple manual or mechanical adjustment forms, it can first perform large-range and low-precision adjustment, and then perform small-range and high-precision adjustment, improving the adjustment efficiency and accuracy, and facilitating the angle deviation adjustment work of the optical aiming system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a front view structural schematic diagram of the three-dimensional adjustment frame of the present invention; Figure 3 is a top view structural schematic diagram of the three-dimensional adjustment frame of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the three-dimensional adjustment frame of the present invention; Figure 5 is a front view structural schematic diagram of the assembly slide of the present invention; Figure 6 is a sectional view structural schematic diagram of the assembly slide of the present invention; Figure 7 is a combined state structural schematic diagram of the servo motor of the present invention; Figure 8 is a combined state structural schematic diagram of the servo motor with the protective shell removed of the present invention.

[0020] In the figures: 1, support table; 2, three-dimensional adjustment frame; 3, light inlet; 4, light pipe main body; 5, light outlet; 6, focal plane observation system; 7, sleeve hole diaphragm plate; 8, two-dimensional adjustment frame; 9, support base; 10, vibration isolation feet; 11, first drive assembly; 12, second drive assembly; 13, execution assembly; 14, third drive assembly; 15, sliding table; 16, top pressing table; 17, table top; 18, inclined plate; 19, rotating table; 20, scissor lift assembly; 21, assembly slide; 22, top block; 23, optical aiming system; 24, portal frame; 25, electromagnetic elastic member; 26, assembly groove; 27, sliding sleeve; 28, lead screw assembly; 29, servo motor; 30, protective shell; 31, helical gear set; 32, inserted shaft; 33, sleeve shaft; 34, wrench head; 35, lifting table; 36, clamping shaft sleeve; 37, bottom plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] Embodiment 1 As Figures 1 to 4As shown in the figure, the large-aperture, large-range, arcsecond-level, multi-optical-axis parallelism tester for high-power lasers in this embodiment includes an optical tube main body 4, a light input port 3 at one end of the optical tube main body 4, and a light output port 5 at the other end of the optical tube main body 4. The optical tube main body 4 includes an off-axis parabolic mirror, an image rotator, a primary and secondary mirror mount, an optical tube box body, etc., which belong to conventional existing technologies. A support platform 1 is provided at the end of the optical tube main body 4 adjacent to the light input port 3 to provide a supporting force for the product to be actually detected. The light passing diameter of the light input port 3 is 400 mm, and its focal length can be set to 9 m. Calculated with reference to the aperture of a certain conventional model product of 30 mm, the optical axis consistency of 2 - 10 groups of products can be adjusted simultaneously to achieve the purpose of multi-optical-axis synchronous detection. A three-dimensional adjustment frame 2 is installed on the top of the support platform 1, which can realize the adjustment of the product position in three directions: up and down lifting, pitching angle, and translation. A focal plane observation system 6 is installed inside the light output port 5, which includes a CCD camera lens, a CCD camera, etc. A two-dimensional adjustment frame 8 is installed at the end of the optical tube main body 4 adjacent to the light output port 5, which is actually a conventional bracket structure with position adjustment in the front-back and left-right directions. A sleeve aperture diaphragm plate 7 (a mature existing technology) is installed on the top of the two-dimensional adjustment frame 8; The three-dimensional adjustment frame 2 includes a bottom plate 37, a lifting platform 35, and an inclined plate 18. The bottom plate 37 is installed on the top of the support platform 1. A scissor lift assembly 20 is installed on the top of the bottom plate 37. Under the push of a moment to one side, it can achieve the height adjustment effect of up and down lifting. The top of the scissor lift assembly 20 is installed with a lifting platform 35, which moves up and down under the influence of the scissor lift assembly 20. A rotating platform 19 is installed at the edge position of the top surface of the lifting platform 35, and the inclined plate 18 is movably installed on the rotating platform 19, and the two are axially connected, so that the inclined plate 18 can rotate around the shaft of the rotating platform 19 under force. A swing assembly is installed between the bottom of the inclined plate 18 on one side of the rotating platform 19 and the top of the lifting platform 35. The swing assembly provides the power required for the movement of the rotating platform 19. The top of the inclined plate 18 is movably installed with a tabletop 17 through a sliding assembly (existing slider, slide rail, etc. structures). The tabletop 17 can be set to a size of 800 mm * 800 mm on the tabletop 17, and an optical aiming system 23 is installed on the tabletop 17. The optical aiming system 23 is a conventional existing technology, and the main body is a light-absorbing cover. Along the direction of the light input port 3, the inner edge of the light-absorbing cover is successively composed of an attenuation sheet, an aiming system, etc., and the aiming system includes conventional structures such as an image-rotating plane mirror, an imaging lens, and a quadrant detector; A second driving component 12 is installed at one end of the lifting platform 35 away from the rotating platform 19. A first driving component 11 is installed at one end of the bottom plate 37 below the second driving component 12. A third driving component 14 is installed at the end of the inclined plate 18. The three driving components can respectively provide the power sources required for the three movement directions of the three-dimensional adjustment frame 2.

[0024] Specifically, the second driving component 12 and the first driving component 11 are arranged in parallel up and down. Workers can operate the second driving component 12 and the first driving component 11 in the same direction. Moreover, the second driving component 12 and the third driving component 14 are arranged with an offset up and down. In the actual space, the orientations of the second driving component 12 and the third driving component 14 are relatively perpendicular. The scissor lift component 20, the swing component, and the sliding component are all equipped with an execution component 13, which is a power execution component after receiving power. And the first driving component 11, the second driving component 12, and the third driving component 14 respectively provide power sources for the execution component 13.

[0025] Furthermore, the swing component includes a sliding table 15 and a tightening table 16. The sliding table 15 is slidably installed at the top end of the lifting table 35 between the second driving component 12 and the rotating table 19. The sliding table 15 is driven by the execution component 13 to move in the left and right directions. The tightening table 16 is movably installed at the bottom of the inclined plate 18 on one side of the rotating table 19. The tightening table 16 and the sliding table 15 are in contact with each other up and down, and the contact surfaces are all inclined surfaces. Therefore, the cross-sections of the sliding table 15 and the tightening table 16 are approximately right-angled trapezoidal structural members. When the sliding table 15 and the tightening table 16 move relative to each other, an upward force on the inclined plate 18 is generated, which can drive the inclined plate 18 to adjust the angle and even perform an inclined swing motion.

[0026] Furthermore, a plurality of support bases 9 are installed at the bottom of the light tube body 4. Since the focal length of the entire light tube body 4 is 9m, multiple support bases 9 are required for multi-position support. And a vibration isolation foundation 10 is installed between the support base 9 and the light tube body 4 to achieve the purpose of shock absorption.

[0027] Even further, a plurality of mounting holes are equidistantly arranged at the top end of the tabletop 17. For example, if they are designed as a plurality of 6-mm holes, they can be used to place a variety of products to be detected and are convenient for fixing operations. And a portal frame 24 is installed at the edge of the top surface of the tabletop 17 adjacent to the light inlet 3. The portal frame 24 and the tabletop 17 are in a detachable connection relationship. The optical aiming system 23 is installed on the portal frame 24. Since performance tests for multi-optical axis parallelism are required, multiple sets of optical aiming systems 23 can be installed on the portal frame 24.

[0028] It should be noted that when the large-aperture, large-range, arcsecond-level high-power laser multi-optical axis parallelism tester is specifically used, the product to be detected first needs to pass through the optical aiming system 23 to adjust the angular deviation. An aiming system with a detection range of ±0.1° - ±6° can be selected, and the detection results can be displayed on the monitor in real time without delay, so as to achieve rapid angular adjustment of each product to be detected. After the product to be detected is adjusted by the aiming system, the angular deviation is controlled within the range of ±0.2°. The subsequent test system can meet the test within the range of 0 - ±0.3°. After the product to be detected is corrected by the front-end aiming system, a focus can be formed on the focal plane of the off-axis collimator with a φ400mm focal length and 9m at the back end. The position of each focus on the focal plane is observed in real time without delay through the focal plane observation system composed of an optical lens and a detector. At the same time, the postures of the products to be detected are adjusted to make the foci closer, thereby reducing the optical axis deviation angle. Without adding calculation software, the minimum distance observed by the observation system is about 0.1mm, corresponding to an optical axis angle deviation of 2.2 for the product to be detected. If a calculation software matching the camera is used, the test accuracy will be better. In addition, specifically, when the height of the table 17 needs to be adjusted up and down, the first driving component 11 needs to provide power for the executing component 13 of the scissor lifting component 20. With the help of the second driving component 12, its executing component 13 drives the sliding table 15 to move left and right. Based on the position change of the sliding table 15 relative to the pressing table 16, the tilt angle of the table 17 is adjusted, and the third driving component 14 drives the table 17 to move horizontally in the front and rear directions.

[0029] Embodiment 2 The structure of the large-aperture, large-range, arcsecond-level high-power laser multi-optical axis parallelism tester in this embodiment is basically the same as that in Embodiment 1. The difference is that an assembly sliding table 21 is installed at the bottom of the table 17. Different from Embodiment 1, at this time, the assembly sliding table 21 is connected to the third driving component 14 by means of a sliding component. An assembly groove 26 (which can be designed as a T-shaped groove) is provided at the top of the assembly sliding table 21. The assembly groove 26 is assembled with the bottom of the table 17 in a limiting manner, and one end of the assembly groove 26 is open. A limiting slider can be provided at the bottom of the table 17. When the table 17 is installed on the assembly sliding table 21, the limiting slider enters through the opening of the assembly groove 26 to form a limiting assembly effect. A top block 22 is installed at the end of the assembly sliding table 21 away from the opening of the assembly groove 26. During installation, the top block 22 can tighten one end of the table 17. An electromagnetic elastic member 25 is installed inside the assembly sliding table 21 adjacent to the opening of the assembly groove 26. The electromagnetic elastic member 25 is an existing electromagnetic block with elastic telescopic performance. After the top block 22 tightens one end of the table 17, the electromagnetic elastic member 25 elongates after being powered off and then moves upward to tighten and limit the other side of the table 17, achieving the installation effect of the table 17 (see Figure 5 and 6 )

[0030] Embodiment 3 The structure of the large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine in this embodiment is basically the same as that of the large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine in Embodiment 1 or 2. The differences are as follows: The first driving component 11, the second driving component 12, and the third driving component 14 are all composed of a sliding sleeve 27, a clamping shaft sleeve 36, and a screwing head 34. A through hole is provided in the sliding sleeve 27 in a left-right through manner. An inserting shaft 32 is movably installed inside the through hole. The inserting shaft 32 can move in the left and right directions along the through hole. A screwing head 34 is installed at the end of the inserting shaft 32 away from the executing component 13. Anti-slip threads are provided on the surface of the screwing head 34, and it can be rotated manually. A clamping shaft sleeve 36 is installed on the inner side wall of the screwing head 34 through a bearing. When the screwing head 34 rotates, the clamping shaft sleeve 36 will not be affected by the force (see Figure 7 and 8 ).

[0031] Specifically, the clamping shaft sleeve 36 is a square structural member with one end larger and the other end smaller. A square inner groove is provided at the end of the sliding sleeve 27 adjacent to the clamping shaft sleeve 36. After the clamping shaft sleeve 36 is stressed, its smaller-sized end can be inserted into the square inner groove to form a limiting effect. A square shaft is installed at one end of the inserting shaft 32 away from the screwing head 34, such as a square shaft member.

[0032] Furthermore, the three groups of executing components 13 are all lead screw assemblies 28. The lead screw assembly 28 is a conventional existing technology and can convert rotational motion into linear motion itself. The sliders of the three groups of lead screw assemblies 28 are respectively connected to the scissor lifting assembly 20, the sliding table 15, and the sliding assembly to provide a horizontal acting force. Sleeve shafts 33 are installed at the ends of the lead screws of the lead screw assemblies 28. Square inner grooves are provided at the ends of the sleeve shafts 33, and the square inner grooves are used in cooperation with the square shafts at one end of the inserting shaft 32. The inserting shaft 32 can be inserted into the inside of the sleeve shaft 33 to form a limiting effect. Furthermore, when the sleeve shaft 33 rotates, the sleeve shaft 33 can be driven to move synchronously, thereby providing the required power source for the lead screw assembly 28.

[0033] Furthermore, a bracket is installed between the lead screw assembly 28 and the sliding sleeve 27. The bracket mainly supports and installs the sliding sleeve 27, and there is an operable gap between the lead screw assembly 28 and the sliding sleeve 27. A protective shell 30 is installed on the bracket. The square shaft and the sleeve shaft 33 are both inside the protective shell 30 for covering and protection. A servo motor 29 (configured with a forward and reverse control circuit) is installed on the top of the protective shell 30. The servo motor 29 needs to be used in cooperation with the numerical control system. The output shaft of the servo motor 29 extends into the protective shell 30, and a helical gear set 31 is installed between the output shaft of the servo motor 29 and the sleeve shaft 33. The helical gear set 31 is divided into a driving gear and a driven gear. The driving gear is installed on the output shaft of the servo motor 29, and the driven gear is installed on the sleeve shaft 33. The gear transmission ratio can be set to 10:1, so as to achieve the purpose of speed reduction transmission.

[0034] The usage method of this embodiment is as follows: When using the three-dimensional adjustment frame 2, the actual usage situation needs to be considered. During the initial adjustment work, large-angle manual adjustment can be carried out. Only need to manually push the wrench 34 together with the clamping shaft sleeve 36 to move forward. After the clamping shaft sleeve 36 is in limit fit with the sliding sleeve 27, the end of the insertion shaft 32 is inserted into the sleeve shaft 33 to form a limit connection. Then, manually drive the wrench 34 to rotate, so that the screw rod rotates synchronously, and after appropriately large-angle adjustment of the three lead screw assemblies 28, when high-precision adjustment is required, the wrench 34 and the like are reset, the insertion shaft 32 is separated from the sleeve shaft 33, and the servo motor 29 is controlled by the numerical control system, and the transmission is carried out by means of the helical gear set 31. Because the transmission ratio is large, the accuracy of angle adjustment is large, thereby improving the accuracy of the subsequent optical axis parallelism test.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism tester, comprising an optical tube main body (4), a light input port (3) at one end of the optical tube main body (4), and a light output port (5) at the other end of the optical tube main body (4). A support platform (1) is provided at the end of the optical tube main body (4) adjacent to the light input port (3), and is characterized in that: The light-passing diameter of the light input port (3) is 400 mm. A three-dimensional adjustment frame (2) is installed on the top of the support platform (1). A focal plane observation system (6) is installed inside the light output port (5). A two-dimensional adjustment frame (8) is installed at the end of the light pipe main body (4) adjacent to the light output port (5). A sleeve hole diaphragm plate (7) is installed on the top of the two-dimensional adjustment frame (8). The three-dimensional adjustment frame (2) includes a bottom plate (37), a lifting platform (35) and an inclined plate (18). The bottom plate (37) is installed on the top of the support platform (1). A scissor lifting assembly (20) is installed on the top of the bottom plate (37). The top of the scissor lifting assembly (20) is installed with a lifting platform (35). A rotating platform (19) is installed at the edge position of the top surface of the lifting platform (35). And an inclined plate (18) is movably installed on the rotating platform (19). A swing assembly is installed between the bottom of the inclined plate (18) on one side of the rotating platform (19) and the top of the lifting platform (35). The top of the inclined plate (18) is movably installed with a tabletop (17) through a sliding assembly. And an optical aiming system (23) is installed on the tabletop (17). A second driving assembly (12) is installed at one end of the lifting platform (35) away from the rotating platform (19). A first driving assembly (11) is installed at one end of the bottom plate (37) below the second driving assembly (12). A third driving assembly (14) is installed at the end of the inclined plate (18).

2. The large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 1, wherein: The second driving assembly (12) and the first driving assembly (11) are arranged parallel to each other vertically. And the second driving assembly (12) and the third driving assembly (14) are arranged vertically and offset from each other. The scissor lifting assembly (20), the swing assembly and the sliding assembly are all installed with an execution assembly (13). And the first driving assembly (11), the second driving assembly (12) and the third driving assembly (14) respectively provide power sources for the execution assembly (13).

3. The large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism tester according to claim 2, characterized in that: The swing assembly includes a sliding table (15) and a tightening table (16). The sliding table (15) is slidably installed at the top of the lifting platform (35) between the second driving assembly (12) and the rotating platform (19). The bottom of the inclined plate (18) on one side of the rotating platform (19) is movably installed with a tightening table (16). The tightening table (16) and the sliding table (15) are in contact with each other vertically and the contact surfaces are all inclined planes.

4. The large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism tester according to claim 3, characterized in that: A plurality of support bases (9) are installed at the bottom of the light pipe main body (4). And a vibration isolation floor bolt (10) is installed between the support base (9) and the light pipe main body (4).

5. The large-aperture large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 1, characterized in that: A plurality of mounting holes are equidistantly arranged at the top of the tabletop (17). And a portal frame (24) is installed at the edge of the top surface of the tabletop (17) adjacent to the light input port (3). The optical aiming system (23) is installed on the portal frame (24).

6. The large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 1, characterized in that: An assembly slide (21) is installed at the bottom of the tabletop (17). An assembly groove (26) is provided at the top of the assembly slide (21). The assembly groove (26) is in limit assembly with the bottom of the tabletop (17), and one end of the assembly groove (26) is open. A top block (22) is installed at the end of the assembly slide (21) away from the opening of the assembly groove (26), and an electromagnetic elastic member (25) is installed inside the assembly slide (21) adjacent to the opening of the assembly groove (26).

7. The large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 2, wherein: The first drive assembly (11), the second drive assembly (12), and the third drive assembly (14) are all composed of a sliding sleeve (27), a clamping shaft sleeve (36), and a screwing head (34). A through hole is provided in the sliding sleeve (27) and runs through from left to right. A plug shaft (32) is movably installed inside the through hole. A screwing head (34) is installed at the end of the plug shaft (32) away from the actuating assembly (13), and a clamping shaft sleeve (36) is installed on the inner side wall of the screwing head (34) through a bearing.

8. The large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 7, wherein: The clamping shaft sleeve (36) is a square structural member, and a square inner groove is provided at the end of the sliding sleeve (27) adjacent to the clamping shaft sleeve (36). A square shaft is installed at one end of the plug shaft (32) away from the screwing head (34).

9. The large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism testing machine according to claim 8, characterized in that: The three actuating assemblies (13) are all lead screw assemblies (28). The sliders of the three lead screw assemblies (28) are respectively connected to the scissor lift assembly (20), the sliding table (15), and the sliding assembly. And sleeve shafts (33) are installed at the ends of the lead screws of the lead screw assemblies (28). Square inner grooves are provided at the ends of the sleeve shafts (33), and the square inner grooves are used in cooperation with the square shafts at one end of the plug shaft (32).

10. The large-aperture and large-range arcsecond-level high-power laser multi-optical axis parallelism tester according to claim 9, characterized in that: A bracket is installed between the lead screw assembly (28) and the sliding sleeve (27), and a protective shell (30) is installed on the bracket. The square shaft and the sleeve shaft (33) are both inside the protective shell (30). A servo motor (29) is installed at the top of the protective shell (30). The output shaft of the servo motor (29) extends into the protective shell (30), and a helical gear set (31) is installed between the output shaft of the servo motor (29) and the sleeve shaft (33).

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