A system and method for aligning a two-axis four-frame kotha optical path

Abstract

The present application relates to the technical field of KODAR optical path adjustment, and particularly relates to a kind of adjustment system and method for KODAR optical path in two-axis four-frame;A kind of adjustment system for KODAR optical path in two-axis four-frame, comprising: autocollimator, reference mirror and adjustment platform;It further comprises on the adjustment platform: outer folding light path adjustment structure, based on right triangle structure adjustment;Inner receiving light path adjustment structure, by reference mirror D and theodolite C constitute inner receiving sighting light path;Inner receiving sighting light path and the other side right angle in outer folding light path adjustment structure, constitute parallel structure;Inner folding light path adjustment structure, by theodolite D being arranged in two-axis four-frame and a reference mirror E being mounted on export light path, and further combined with the two sighting light paths being orthogonally arranged with theodolite D.The present application makes full use of the relationship between structures and theodolite mutual sighting principle on the basis of traditional adjustment method, improves the adjustment accuracy, and reduces the cost.

Description

Technical Field

[0001] This invention relates to the field of Kuder optical path assembly and adjustment technology, specifically to an assembly and adjustment system and method for Kuder optical paths in a two-axis four-frame configuration. Background Technology

[0002] With the rapid development of the optoelectronic field, the demand for high-power lasers in laser communication and optoelectronic systems is gradually increasing, leading to an increase in the complexity of the optical path in the entire optoelectronic system. As the complexity of the optical path gradually increases, the size of the optomechanical system in common airborne pods also increases, which is not conducive to meeting the requirements of the overall size and weight of the optomechanical system in certain airborne and vehicle-mounted applications.

[0003] The Kud optical path, as a method of optical path conduction, can introduce an optical path placed at the rear of the pod into the interior of the optoelectronic pod, ensuring that the optical path rotates with the frame inside the pod, thereby completing the imaging and tracking functions of the entire system. Although the Kud optical path reduces the size and weight of the optomechanical system to some extent, there is a certain superposition error between the beam that has been refracted multiple times by the Kud optical path and the ideal beam incident on the detector's line of sight. Therefore, the assembly and adjustment of the Kud optical path is a crucial part of the imaging and laser beam emission and tracking accuracy of the entire optomechanical system.

[0004] Because the Couder optical path needs to guide the beam into the pod payload, the Couder mirror assembly is usually positioned near the axis, guiding the optical path through a hollow location within the axis. This places certain requirements on the space on both sides of the pod frame, so it is mostly used in two-axis, two-frame pods. For the Couder optical path assembly and adjustment in a two-axis, two-frame pod, since the number of Couder mirrors is small, the superposition error is minimal and can be compensated for manually adjusted and using fast-reflecting mirrors, so an integrated adjustment scheme is usually adopted. After determining the light source reference, the corresponding Couder mirror mounts are installed sequentially. By assembling and adjusting multiple sets of Couder mirrors as a whole, the beam is folded at the ideal folding angle. For more complex optical systems with higher precision, the structure is typically two-axis, four-frame, with an increased number of Couder optical path folds, more optical mirrors, and multiple optical mounts rotating with the frame, all of which increase the difficulty and time cost of assembly and adjustment.

[0005] For pods with strict size and weight requirements, a rear optical path is often included to reduce the size and volume of the load within the pod. The connection between the rear optical path and the optical path of the load in the pod is through the Kuder optical path. Therefore, it is necessary to sacrifice some dimensions of the shaft systems on both sides of the pod to install and adjust the Kuder optical path. This makes the installation and adjustment of the Kuder optical path a challenge for some two-axis, four-frame pods with high precision requirements.

[0006] Currently, there are two main methods for assembling and adjusting the Couder optical path: the traditional method and the pentaprism method. The traditional method uses an autocollimator to determine the system reference, then continuously adjusts the installation positions of multiple Couders in the Couder group, observing the position of the reflected image in the autocollimator to ensure it is within the autocollimator's central field of view. This method requires assembling and adjusting multiple Couders simultaneously; adjusting one Couder has a significant impact on subsequent Couders, is time-consuming, and cannot determine the errors between individual Couders after assembly. As the number of Couder groups increases, these errors accumulate non-linearly. Therefore, this method is only suitable for scenarios with a small number of Couders or where the overall system accuracy requirements are not high. The pentaprism method utilizes the characteristic that the incident and outgoing rays of a pentaprism always maintain a 90-degree angle to ensure the position and angle between each group of Couders, and then uses an autocollimator to assemble and adjust the Couder group. This method requires high equipment costs. The pentaprism requires high precision in optical materials and processing during manufacturing. To ensure its angular accuracy and optical performance, high-precision grinding and polishing are required. Moreover, its precision is easily affected by environmental factors such as temperature and humidity. These effects are amplified during high-precision assembly and adjustment and the assembly and adjustment of multiple sets of Coudé mirrors, leading to deviations in assembly and adjustment precision.

[0007] To address the shortcomings of existing solutions, a Kuder optical path assembly and adjustment scheme based on a two-axis, four-frame design is proposed, while improving assembly and adjustment accuracy and reducing assembly and adjustment costs. Summary of the Invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defects existing in the prior art, thereby providing an assembly and adjustment system and method for the Kuder optical path in a two-axis four-frame structure.

[0009] An assembly and adjustment system for the Couder optical path in a two-axis four-frame configuration includes: an autocollimator, several reference mirrors mounted at the turning points of the Couder optical path in the two-axis four-frame configuration, and an assembly and adjustment platform; characterized in that the assembly and adjustment platform further includes:

[0010] The external folding optical path adjustment structure consists of two reference mirrors and two theodolites forming a right-angled triangle structure; the two theodolites form the hypotenuse of the right-angled triangle based on the aiming principle; the two reference mirrors and one theodolite, which are mounted on the same side of the two-axis four-frame, form one right-angled side.

[0011] The internal receiving optical path assembly and adjustment structure consists of a reference mirror D and a theodolite C forming the internal receiving aiming optical path; the other right-angled side of the internal receiving aiming optical path and the external folding optical path assembly and adjustment structure forms a parallel structure based on the two adapted theodolites aiming.

[0012] The internal folding optical path adjustment structure consists of a theodolite D set inside the two-axis four-frame and a reference mirror E installed on the lead-out optical path; wherein, the two aiming optical paths formed by the reference mirror E, the reference mirror D and the theodolite D are orthogonally arranged.

[0013] The setup and adjustment of the Kude 5 mirror, installed inside the two-axis four-frame structure: Rotate the theodolite D based on preset indicators so that the theodolite D rotates 90+ degrees from the aiming reference mirror E. The aiming path after rotation and the intersection of the two axes and four frames are adjusted with the Kude 5 scope.

[0014] An assembly and adjustment method for the Kuder optical path in a two-axis four-frame structure is provided, which is implemented using an assembly and adjustment system for the Kuder optical path in a two-axis four-frame structure. The overall structure assembly and adjustment steps include:

[0015] Coarse adjustment:

[0016] A reference mirror is installed at each bend in the Kude optical path;

[0017] Establish testing benchmarks: Construct assembly and adjustment benchmarks by using an autocollimator and a reference mirror located at the first bend of the Kude optical path;

[0018] External folding optical path adjustment: Using two theodolites set outside the two-axis four-frame, based on the right triangle interior angle sum theorem, aiming and adjusting two reference mirrors set on the same side outside the two-axis four-frame so that the reflecting surfaces of the two reference mirrors are orthogonal;

[0019] Internal receiving optical path assembly and adjustment: Similarly, using the two theodolites set on the other right-angled side of the internal receiving aiming optical path and the external folding optical path assembly and adjustment structure, the optical path is assembled and adjusted based on the parallel line interior angle sum theorem, so that the internal receiving aiming optical path and the two reference mirrors on the other right-angled side are parallel.

[0020] Fine-tuning:

[0021] After coarse adjustment, all reference mirrors on the outside of the two-axis four-frame were replaced with Couder mirrors. Fine adjustment was then performed based on the principle of reflection and the autocollimator to ensure that the crosshairs of the autocollimator were within the central field of view.

[0022] Using the theodolite D set inside the two-axis four-frame, based on the right angle theorem, aim and adjust the two reference mirrors that should be orthogonally set on the corresponding Kuder optical path inside the two-axis four-frame so that the reflecting surfaces of the two reference mirrors are orthogonal.

[0023] Using the theodolite D, which is set inside the two-axis, four-frame structure, the mounting position is aligned coaxially, and the angle between the reflecting surfaces is [value missing]. The aiming and adjustment are performed between the reference reflector E and the Kud 5 scope;

[0024] Replace all reference mirrors inside the two-axis four-frame with Couder mirrors, and fine-tune them based on the principle of reflection and the autocollimator until the crosshairs of the autocollimator are within the center field of view. The assembly and adjustment are then complete.

[0025] Preferably, when any assembly / adjustment structure has a standard structure that does not require assembly / adjustment, and the standard structure that does not require assembly / adjustment can satisfy the execution of the corresponding assembly / adjustment method, it can work independently.

[0026] Preferably, when it is necessary to replace any Couder, at least one base reference mirror for reflecting the light path to the autocollimator must be provided; wherein, the Couder to be replaced is located on the incident light path of the base reference mirror.

[0027] Preferably, using two theodolites positioned outside the two-axis four-frame, based on the right triangle interior angle sum theorem, two reference mirrors positioned on the same side outside the two-axis four-frame are aimed and adjusted to make the reflecting surfaces of the two reference mirrors orthogonal. Specifically, this includes the following steps:

[0028] Install the reference mirror B to the outside of the two-axis four-frame, install the theodolite A to the assembly and adjustment platform, and align the two: the mounting surface of the reference mirror B is the back of the reflector;

[0029] Install reference mirror C to the outside of the two-axis four-frame on the same side as reference mirror B. Install the theodolite B to the assembly and adjustment platform and align the two: the mounting surface of reference mirror C is the side, so that the reflecting surface of reference mirror C and the pitch axis system of the two-axis four-frame are orthogonal.

[0030] Rotate theodolite A and theodolite B to align them, and record the rotation angle of theodolite A. ;

[0031] Rotate the theodolite B 90 degrees in the direction of the two-axis four-frame. Determine the angle and align it with the reference mirror C. Adjust the reference mirror C until the crosshairs of the theodolite B and the reference mirror C are aligned.

[0032] Preferably, using two theodolites positioned on the other right-angled side of the inner receiving aiming optical path and the outer folding optical path adjustment structure, the optical path is adjusted based on the parallel line interior angle sum theorem to make the reflecting surfaces of the two reference mirrors on the other right-angled side of the inner receiving aiming optical path and the outer folding optical path adjustment structure parallel. Specifically, this includes the following steps:

[0033] Install the reference mirror D to the second layer of the two-axis four-frame optical path at the turning point from the inside to the outside;

[0034] Install the theodolite C to the outside of the two-axis four-frame, and on the same side as the outward folding optical path;

[0035] Align the horizontally positioned theodolite C and the reference mirror D;

[0036] Align the theodolite C with the theodolite A located on the other right-angled side of the external folding optical path adjustment structure, and record the rotation of theodolite A from the aiming reference mirror B. Spend;

[0037] Rotate the theodolite C 180° towards the reference mirror D. Adjust the reference mirror D to align the theodolite C and the reference mirror D.

[0038] Preferably, the coarsely adjusted two-axis four-frame external reference mirror B is replaced with a Kuder 2 mirror. Specific adjustments include:

[0039] Remove the reference mirror B and assemble the Kuder 2 mirror; at this time, the autocollimator, the Kuder 1 mirror already installed at the first folding point, the Kuder 2 mirror, and the reference mirror C are aligned in sequence; and the light reflected by the reference mirror C returns to the autocollimator along the original path.

[0040] Adjust the Kuder 2 mirror until the autocollimator's crosshairs are within the center field of view.

[0041] Preferably, using the theodolite D set inside the two-axis four-frame, based on the right angle theorem, the two reference mirrors, which should be orthogonally set on the corresponding Kuder optical path inside the two-axis four-frame, are aimed and adjusted to make the reflecting surfaces of the two reference mirrors orthogonal. Specifically, this includes:

[0042] Install the reference mirror E onto the lead-out optical path of the Kud optical path;

[0043] Since the reference mirror D has been installed and adjusted, align the horizontally placed theodolite D with the reference mirror D, and zero each line of sight;

[0044] Rotate the theodolite D 90 degrees toward the reference mirror E;

[0045] Adjust the reference mirror E so that the theodolite D and the reference mirror E are aligned.

[0046] Preferably, the theodolite D, located inside the two-axis, four-frame structure, is used to ensure coaxial alignment of the mounting position, with the included angle of the reflecting surfaces being [missing information]. The aiming and adjustment between the reference reflector E and the Kud 5 scope involves:

[0047] Install the Kude 5 mirror to the intersection of the extension line connecting the reference mirror E and the theodolite D and the two four-frame connection points;

[0048] Rotate the theodolite D, which is aligned with the reference mirror E, 90° towards the direction of the Kude 5 mirror. Spend;

[0049] Adjust the Kude 5 mirror to align the theodolite D and the Kude 5 mirror.

[0050] The technical solution of this invention has the following advantages:

[0051] After introducing multiple sets of reference mirrors and theodolites, it is easier to establish optical axis reference standards and minimize the assembly and adjustment errors between each Couder mirror group. It is also easier and more intuitive to establish the relative positional relationship between Couders mirrors within each frame, thus making it easier to correct mirror groups that have shifted. The optical axis adjustment method based on a two-axis four-frame Couder optical path proposed in this invention improves the detection and assembly accuracy of each Couder mirror group, and the detection and assembly method is simple and easy to operate. Attached Figure Description

[0052] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0053] Figure 1 This is a top view of the assembly and adjustment structure of reference mirror A, reference mirror B, and reference mirror C.

[0054] Figure 2 A top view of the mounting structure of the reference reflector D;

[0055] Figure 3 A top view of the Kud 1 mirror assembly structure;

[0056] Figure 4 A top view of the Kud 2 mirror assembly structure;

[0057] Figure 5 A top-view schematic diagram of the Kuder 3-mirror mounting structure;

[0058] Figure 6 A top view of the mounting structure for the reference reflector E;

[0059] Figure 7 A top view schematic diagram of the Kude 5 mirror assembly structure;

[0060] Figure 8 This is a top view schematic diagram of the Kude 4-mirror mounting structure.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1-Frame A, 2-Frame B, 3-Frame C, 4-Frame D;

[0063] 5- Assembly and adjustment platform;

[0064] 6 - Reference mirror A, 7 - Reference mirror B, 8 - Reference mirror C, 9 - Reference mirror D, 10 - Reference mirror E;

[0065] 11-Kude 1 scope, 12-Kude 2 scopes, 13-Kude 3 scopes, 14-Kude 4 scopes, 15-Kude 5 scopes;

[0066] 16-Autocollimator;

[0067] 17-Theodolite A, 18-Theodolite B, 19-Theodolite C, 20-Theodolite D. Detailed Implementation

[0068] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0070] This invention discloses an assembly and adjustment system and method for the Kuder optical path in a two-axis four-frame structure;

[0071] Regarding the two-axis, four-frame design:

[0072] The frame section of the two-axis four-frame structure consists of frame A1, frame B2, frame C3 and frame D4 from the outside to the inside.

[0073] Among them, frame A1 is connected to the base of the two-axis four-frame system through the roll axis system. Frame A1 rotates along the roll axis, and the base is fixed on the assembly platform by the assembly and adjustment fixture.

[0074] Frame B2 is connected to frame A1 via a pitch axis system, and frame B2 rotates within frame A1 along the pitch axis via the pitch axis system.

[0075] Frame C3 is connected to frame B2 via a pitch axis system, and frame C3 rotates within frame B2 along the pitch axis via the pitch axis system.

[0076] Frame D4 is connected to frame C3 via a roll axis system, and frame D4 rotates along the roll axis within frame C3 via the roll axis.

[0077] Among them, frames B2 and D4 are theoretically not connected to the components of the Kuder optical path, but only serve as components of the whole system, respectively used to support frames C3, frames D4 and support the internal optical load.

[0078] It should be noted that the two-axis four-frame structure is a traditional technical structure. The description of this structure is only for the purpose of understanding the installation position of the assembly and adjustment system. Therefore, the structures in the two-axis four-frame that are not related to the assembly and adjustment system will not be further described in subsequent embodiments.

[0079] like Figure 8 Standard installation and optical path routing of the Couder after adjustment:

[0080] exist Figure 8 The positions shown in the figure directly define the up, down, left, and right; the Kude 1 mirror 11 is installed above the frame A1 and can roll and rotate with the frame A1, forming a 45-degree angle with the optical axis of the light introduced by the rear optical path, specifically, a 45-degree angle with the roll axis.

[0081] Kuder 2 mirror 12 is mounted on the side of frame A1 and rotates with frame A1. Its normal is 180 degrees to the normal of Kuder 1 mirror 11, so that Kuder 1 mirror 11 and Kuder 2 mirror 12 are placed in parallel.

[0082] Kude 3 mirror 13 is mounted on the side of frame A1 and rotates with frame A1. Its normal is at a 90-degree angle to the normal of Kude 2 mirror 12, so that Kude 3 mirror 13 is placed perpendicular to Kude 2 mirror 12.

[0083] The Kuder 4 mirror 14 is installed on the inner wall of frame C3 on the side away from Kuder 3 mirror 13. It tilts and rotates with frame C3. Its normal is at an angle of θ degrees to the horizontal optical axis and is at an angle of 135-θ degrees to the normal of Kuder 3 mirror 13.

[0084] The Kude 5 mirror 15 is mounted on the top of the inner wall of frame C3 and rotates with the pitch of frame C3. Its normal is at a 90-degree angle to the normal of Kude 4 mirror 14, so that Kude 5 mirror 15 is placed perpendicular to Kude 4 mirror 14.

[0085] In this process, the light entering the load through the rear optical path is refracted 90 degrees by Kuder 1 mirror 11 to Kuder 2 mirror 12, then refracted 90 degrees by Kuder 2 mirror 12 to Kuder 3 mirror 13, then refracted 90 degrees by Kuder 3 mirror 13 to Kuder 4 mirror 14, then refracted θ degrees by Kuder 4 mirror 14 to Kuder 5 mirror 15, and then refracted 90-θ degrees by Kuder 5 mirror 15 before entering the load.

[0086] Since the optical routing frames C3 and D4 need to be introduced into the load, the angle between the normal of the Kuder 4 mirror 14 and the horizontal optical axis is taken as θ degrees. This angle is determined according to the actual design and there is no specific requirement. It is only used for qualitative analysis here.

[0087] Example 1

[0088] An assembly and adjustment system for the Kude optical path in a two-axis four-frame structure includes: an autocollimator 16, several reference mirrors installed at the turning points of the Kude optical path in the two-axis four-frame structure, and an assembly and adjustment platform 5.

[0089] like Figure 1 As shown, the autocollimator 16 installed on one side of the two-axis four-frame and the reference mirror A6 installed on the frame A1 constitute the reference adjustment structure.

[0090] The reference mirror A6 rolls and rotates with the frame A1.

[0091] The assembly and adjustment platform 5 also includes:

[0092] The externally folding optical path adjustment structure consists of two reference mirrors and two theodolites forming a right-angled triangle. The two theodolites, based on aiming principles, form the hypotenuse of the right triangle. Two reference mirrors and one theodolite, mounted on the same side of the two-axis, four-frame structure, form one right-angled side. Specifically, reference mirrors B7 and C8 are both mounted on the same side of frame A1 and rotate with frame A1. Reference mirror B7 and theodolite A17 form the other right-angled side. Reference mirrors B7, C8, and B18 form one right-angled side. Reference mirror C8 is positioned at a 90-degree angle to the pitch axis of frame A1.

[0093] The internal receiving optical path assembly structure consists of a reference mirror D9 and a theodolite C19 forming the internal receiving aiming optical path; the other right-angled side of the internal receiving aiming optical path and the external folding optical path assembly structure forms a parallel structure based on the matching two theodolites aiming; specifically, the reference mirror D9 is installed at the Kuder optical path folding point on the inner wall of the frame C3 away from the external folding optical path assembly structure, and rotates with the pitch of the frame C3.

[0094] The internal folding optical path adjustment structure consists of a theodolite D20 set inside the two-axis four-frame and a reference mirror E10 installed on the lead-out optical path; wherein, the two aiming optical paths formed by the reference mirror E10, the reference mirror D9 and the theodolite D20 are orthogonally arranged; the reference mirror E10 is installed at the bottom of the inner wall of the frame C3 and rotates with the frame C3 in pitch.

[0095] The setup and adjustment of the Kude 5 mirror 15, installed inside the two-axis four-frame structure: Rotate the theodolite D20 based on preset indicators so that the theodolite D20 rotates 90+ degrees from the aiming reference mirror E10. The aiming path after rotation and the intersection of the two axes and four frames are adjusted to the Kude 5-scope 15.

[0096] Example 2

[0097] like Figure 1-8A method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure is provided, which is implemented using the assembly and adjustment system for the Kuder optical path in a two-axis four-frame structure disclosed in Embodiment 1. The overall structure assembly and adjustment steps include:

[0098] The two-axis, four-frame assembly that has been completed by itself is mounted on the assembly and adjustment platform 5 via the base;

[0099] Coarse adjustment:

[0100] A reference mirror is installed at each bend in the Kude optical path;

[0101] Establish testing benchmarks: Construct assembly and adjustment benchmarks using the autocollimator 16 and the reference mirror A6;

[0102] External folding optical path adjustment: Using two theodolites set outside the two-axis four-frame, based on the right triangle interior angle sum theorem, aiming and adjusting two reference mirrors set on the same side outside the two-axis four-frame so that the reflecting surfaces of the two reference mirrors are orthogonal;

[0103] Internal receiving optical path assembly and adjustment: Similarly, using the two theodolites set on the other right-angled side of the internal receiving aiming optical path and the external folding optical path assembly and adjustment structure, the optical path is assembled and adjusted based on the parallel line interior angle sum theorem, so that the internal receiving aiming optical path and the two reference mirrors on the other right-angled side are parallel.

[0104] Fine-tuning:

[0105] After coarse adjustment, all reference mirrors on the outside of the two-axis four-frame were replaced with Couder mirrors. Fine adjustment was then performed based on the principle of reflection and the autocollimator to ensure that the 16 crosshairs of the autocollimator were within the central field of view.

[0106] Using the theodolite D20 set inside the two-axis four-frame, based on the right angle theorem, aim and adjust the two reference mirrors that should be orthogonally set on the corresponding Kuder optical path inside the two-axis four-frame so that the reflecting surfaces of the two reference mirrors are orthogonal.

[0107] Using a theodolite D20 housed within a two-axis, four-frame structure, the mounting position was aligned coaxially, with the included angle of the reflecting surfaces being [value missing]. The aiming and adjustment are performed between the E10 reference mirror and the Kud 5 mirror 15;

[0108] Replace all reference mirrors inside the two-axis four-frame with Couder mirrors, and fine-tune them based on the principle of reflection and the autocollimator until the crosshairs of the autocollimator are within the center field of view. The assembly and adjustment are then complete.

[0109] Example 3

[0110] Based on Example 2, this example further discloses the specific details of the assembly and adjustment:

[0111] like Figure 1 To establish a testing reference: Rotate frame A1 horizontally to 0 degrees and install reference mirror A6 onto frame A1; install autocollimator 16 on the assembly platform 5, adjust autocollimator 16 to be horizontal, and adjust the height of autocollimator 16 so that autocollimator 16 is aligned with reference mirror A6; autocollimator 16 receives the light reflected back from reference mirror A6. Next, rotate frame A1 while observing whether the crosshairs of autocollimator 16 are within the central field of view. When frame A1 is rotated, the crosshairs of autocollimator 16 remain within the central field of view, indicating that reference mirror A6 is now properly assembled. Finally, keep the relative positions of frame A1 and autocollimator 16 fixed, and use them as the reference for the incident optical axis.

[0112] like Figure 2 External folding optical path adjustment:

[0113] Install the reference mirror B7 to the outside of the two-axis four-frame assembly, and allow it to roll and rotate with frame A1. The mounting surface of the reference mirror B7 should be the reflective back side. Install the theodolite A17 onto the assembly platform and adjust the bubble level of the theodolite A17 to keep it horizontal. Next, adjust the horizontal and vertical line of sight of the theodolite A17 to zero and align the theodolite A17 with the reference mirror B7. Finally, adjust the reference mirror B7 using the crosshair position of the theodolite A17 until the crosshair of the reference mirror B7 is aligned with the crosshair of the theodolite A17. At this point, the installation of the reference mirror B7 is complete, and the position of the theodolite A17 remains unchanged.

[0114] Install the reference mirror C8 to the outside of the two-axis four-frame, with the mounting surface of the reference mirror C8 facing sideways, so that the reflecting surface of the reference mirror C8 is orthogonal to the pitch axis system of the two-axis four-frame. The reference mirror C8 rotates with the frame A1 in roll. Install the theodolite B18, align the reference mirror C8 and the theodolite B18, and coarsely adjust their heights to make them roughly the same. Adjust the bubble of the theodolite B18 to keep it level, and adjust the horizontal and vertical line of sight of the theodolite B18 to zero. Rotate the theodolite A17 and the theodolite B18 for mutual alignment, and record the rotation angle of the theodolite A17. After recording, the angle of the theodolite A17 was classified as the angle before the two theodolites aimed at each other;

[0115] Rotate the theodolite B18 90 degrees towards the two-axis, four-frame direction. Align the theodolite with the reference mirror C8, and adjust the reference mirror C8 until the crosshairs on the theodolite B18 and the reference mirror C8 are aligned.

[0116] like Figure 2 Internal optical receiving path assembly and adjustment:

[0117] Install the reference reflector D9;

[0118] Remove the theodolite B18 and install the theodolite C19 to the outside of the two-axis four-frame, on the same side as the outward folding optical path;

[0119] Align the theodolite C19 and the reference mirror D9, adjust the height of the theodolite C19 and the reference mirror D9 to be roughly the same, adjust the bubble of the theodolite C19 to keep the theodolite C19 horizontal, and adjust the angle between the horizontal line of sight and the vertical line of sight of the theodolite C19 to zero.

[0120] Align the theodolite C19 with the theodolite A17 located on the other right-angled side of the external folding optical path adjustment structure, and record the rotation of theodolite A17 from the aiming reference mirror B7. Spend;

[0121] Rotate the theodolite C19 180° towards the reference mirror D9. Adjust the reference mirror D9 to align the crosshairs of the theodolite C19 and the reference mirror D9.

[0122] Fine-tuning:

[0123] like Figure 3 Next, remove the reference mirror A6 and install the Kuder 1 mirror 11, so that the light emitted from the autocollimator 16 is reflected back to the autocollimator 16 via the Kuder 1 mirror 11 and the reference mirror B7. Finally, observe whether the crosshairs in the autocollimator 16 are within the central field of view, and adjust the Kuder 1 mirror 11 at the same time. When the crosshairs of the autocollimator 16 are within the central field of view, the Kuder 1 mirror 11 is now installed and adjusted.

[0124] like Figure 4 Furthermore, the reference mirror B7 is disassembled and the Kuder 2 mirror 12 is assembled; at this time, the autocollimator 16, the already assembled Kuder 1 mirror 11, the Kuder 2 mirror 12 and the reference mirror C8 are aligned in sequence; and the light reflected by the reference mirror C8 returns to the autocollimator 16 along the original path.

[0125] Adjust the Kuder 2 mirror 12 until the crosshairs of the autocollimator 16 are within the center field of view.

[0126] like Figure 5 Next, remove the reference mirror C8 and install the Kuder 3 mirror 13, so that the light emitted from the autocollimator 16 is reflected back to the autocollimator 16 via the Kuder 1 mirror 11, Kuder 2 mirror 12, Kuder 3 mirror 13, and reference mirror D9. Finally, observe whether the crosshairs in the autocollimator 16 are within the central field of view, and adjust the Kuder 3 mirror 13 until the crosshairs of the autocollimator 16 are within the central field of view. At this point, the Kuder 3 mirror 13 is installed and adjusted.

[0127] like Figure 6Furthermore, the reference mirror E10 is installed on the lead-out optical path of the Kud optical path;

[0128] With the reference mirror D9 already installed and adjusted, align the horizontally placed theodolite D20 and the reference mirror D9, and zero out each line of sight.

[0129] Use the reference mirror D9 as the reference for the theodolite D20, align the crosshairs of the reference mirror D9 with the crosshairs of the theodolite D20, and rotate the theodolite D20 90 degrees toward the reference mirror E10.

[0130] Adjust the reference mirror E10 so that the theodolite D20 and the reference mirror E10 are aligned. At this point, the installation and adjustment of the reference mirror E10 is complete.

[0131] like Figure 7 Furthermore, install the Kude 5 mirror 15 to the reference mirror E10 and the theodolite D20 connecting extension line and the intersection of the two four-frames;

[0132] Rotate the theodolite D20, which is aligned with the reference mirror E10, 90° towards the direction of the Kude 5 mirror 15. Spend;

[0133] Adjust the Kude 5 mirror 15 to align the theodolite D20 and the Kude 5 mirror 15. At this point, the Kude 5 mirror 15 is installed and adjusted.

[0134] like Figure 8 Next, remove the reference mirror D9 and install the Kuder 4 mirror 14, so that the light emitted from the autocollimator is reflected back to the autocollimator 16 via Kuder 1 mirror 11, Kuder 2 mirror 12, Kuder 3 mirror 13, Kuder 4 mirror 14, Kuder 5 mirror 15, and the reference mirror E10. Then, observe whether the crosshairs within the autocollimator 16 are within the central field of view, and simultaneously adjust the Kuder 4 mirror 14. When the crosshairs of the autocollimator 16 are within the central field of view, the Kuder 4 mirror 14 is now fully installed and adjusted. Finally, remove the reference mirror E10. At this point, the optical axes of the Kuder optical paths within the four frames are all installed and adjusted.

[0135] Example 4

[0136] Based on Example 2, this example further discloses the following:

[0137] When any assembly structure has a standard assembly structure that does not require assembly, and the standard assembly structure that does not require assembly can satisfy the execution of the corresponding assembly method, it works independently.

[0138] When it is necessary to replace any Couder mirror, at least one base reference mirror must be set up for reflecting the light path to the autocollimator 16; wherein, the Couder mirror to be replaced is located on the incident light path of the base reference mirror.

[0139] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An assembly and adjustment system for the Kuder optical path in a two-axis four-frame configuration, comprising: The system comprises an autocollimator (16), several reference mirrors mounted at the Kud optical path turning points in a two-axis four-frame system, and an assembly platform (5); characterized in that the assembly platform (5) further includes: The external folding optical path adjustment structure consists of a reference mirror B (7), a reference mirror C (8), a theodolite A (17), and a theodolite B (18) forming a right-angled triangle structure. The theodolite A (17) and the theodolite B (18) form the hypotenuse of the right-angled triangle based on the aiming principle. The two reference mirrors B (7), C (8), and B (18), which are installed on the same side outside the two-axis four-frame, form one right-angled side. Specifically, the reference mirrors B (7) and C (8) are both installed on the same side outside the frame A (1) of the two-axis four-frame, and both roll with the frame A (1). The reference mirrors B (7) and A (17) form the other right-angled side. The reference mirrors B (7), C (8), and B (18) form one right-angled side. The reference mirror C (8) is positioned at a 90-degree angle to the pitch axis of the frame A (1). The internal receiving optical path assembly structure consists of a reference mirror D (9) and a theodolite C (19) forming the internal receiving aiming optical path; the other right-angled side of the internal receiving aiming optical path and the external folding optical path assembly structure is aligned with the theodolite A (17) and the theodolite C (19) to form a parallel structure: the theodolite C (19) and the reference mirror D (9) are aligned; the theodolite C (19) and the theodolite A (17) are aligned with each other, and the rotation of the theodolite A (17) from the aiming reference mirror B (7) is recorded. Degrees; Rotate the theodolite C (19) 180° toward the reference mirror D (9). Adjust the reference mirror D(9) to align the crosshairs of the theodolite C(19) and the reference mirror D(9) to achieve parallelism; The inner folding optical path adjustment structure consists of a theodolite D (20) set inside the two-axis four-frame and a reference mirror E (10) installed on the outgoing optical path; wherein, the two aiming optical paths formed by the reference mirror E (10), the reference mirror D (9) and the theodolite D (20) are orthogonally set. The installation and adjustment of the Kuder 5 mirror (15) inside the two-axis four-frame is performed with the installation position coaxial and the included angle of the reflecting surface being [missing information]. Aiming and setting between the reference mirror E (10) and the Kude 5 mirror (15): Rotate the theodolite D (20) based on preset indicators so that the theodolite D (20) rotates 90+ degrees from the aiming reference mirror E (10). The aiming path after rotation and the intersection of the two-axis four-frame internal assembly of the Kude 5 scope (15). When it is necessary to replace any Couder mirror, it is necessary to ensure that at least one base reference mirror is set up for reflecting the light path to the autocollimator (16); wherein the Couder mirror to be replaced is located on the incident light path of the base reference mirror.

2. A method for assembling and adjusting the Kuder optical path in a two-axis four-frame configuration, characterized in that, The assembly and adjustment system for the Kuder optical path in a two-axis four-frame structure, as described in claim 1, includes the following overall structural assembly and adjustment steps: Coarse adjustment: A reference mirror is installed at each bend in the Kude optical path; Establish testing benchmarks: Construct assembly and adjustment benchmarks by using an autocollimator (16) and a reference mirror located at the first bend of the Kude optical path; External folding optical path adjustment: Using the theodolite A (17) and theodolite B (18) set outside the two-axis four-frame, based on the right triangle interior angle sum theorem, the reference mirror B (7) and reference mirror C (8) set on the same side outside the two-axis four-frame are aimed and adjusted so that the reflecting surfaces of reference mirror B (7) and reference mirror C (8) are orthogonal; Internal receiving optical path assembly and adjustment: Similarly, using the theodolite A (17) and theodolite C (19) set on the other right-angle side of the internal receiving aiming optical path and the external folding optical path assembly and adjustment structure, the optical path is assembled and adjusted based on the parallel line interior angle sum theorem so that the reflective surface of the reference mirror D (9) on the internal receiving aiming optical path is parallel to the reflective surface of the reference mirror B (7) on the other right-angle side; Fine-tuning: After coarse adjustment, all reference mirrors outside the two-axis four-frame were replaced with Couder mirrors. Fine adjustment was then performed based on the principle of reflection and the autocollimator to ensure that the crosshairs of the autocollimator (16) were within the central field of view. Using the theodolite D(20) set inside the two-axis four-frame, based on the right angle theorem, the reference mirror D(9) and reference mirror E(10) set inside the two-axis four-frame and corresponding to the Kuder optical path, which should be orthogonally set, are aimed and adjusted so that the reflecting surface of the reference mirror D(9) and the reflecting surface of the reference mirror E(10) are orthogonal. Using the theodolite D(20) set inside the two-axis four-frame, the installation position is aligned coaxially, and the angle between the reflecting surfaces is [missing information]. The aiming and adjustment are performed between the reference mirror E (10) and the Kude 5 mirror (15); Replace all reference mirrors inside the two-axis four-frame with Couder mirrors, and fine-tune them based on the principle of reflection and the autocollimator until the crosshairs of the autocollimator are within the center field of view. The assembly and adjustment are then complete.

3. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 2, characterized in that, When any assembly structure has a structure that does not require assembly, and the structure that does not require assembly can satisfy the execution of the corresponding assembly method, it works independently.

4. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 2, characterized in that, The external folding optical path assembly and adjustment specifically includes the following steps: Install the reference mirror B (7) to the outside of the two-axis four-frame, install the theodolite A (17) to the assembly and adjustment platform, and align the two: the mounting surface of the reference mirror B (7) is the back of the reflection; Install the reference reflector C (8) to the outside of the two-axis four-frame and on the same side as the reference reflector B (7). Install the theodolite B (18) to the assembly and adjustment platform and align the two: the mounting surface of the reference reflector C (8) is the side so that the reflecting surface of the reference reflector C (8) and the pitch axis system of the two-axis four-frame are orthogonal. Rotate theodolite A (17) and theodolite B (18) to align them and record the rotation angle of theodolite A (17). ; Rotate the theodolite B (18) 90° in the direction of the two-axis four-frame. Align the reference mirror C(8) with the reference mirror C(8) and adjust the reference mirror C(8) until the crosshairs of the theodolite B(18) and the crosshairs of the reference mirror C(8) are aligned.

5. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 4, characterized in that, The internal receiver optical path assembly and adjustment specifically includes the following steps: Install the reference mirror D(9) to the second layer of the two-axis four-frame upper Kude optical path turning point from the inside to the outside; Install the theodolite C (19) to the outside of the two-axis four-frame, and on the same side as the outward folding optical path; Align the horizontally positioned theodolite C (19) and the reference mirror D (9); Align the theodolite C (19) with the theodolite A (17) on the other right-angle side of the external folding optical path adjustment structure, and record the rotation of theodolite A (17) from the aiming reference mirror B (7). Spend; Rotate the theodolite C (19) 180° toward the reference mirror D (9). Adjust the reference mirror D(9) to align the theodolite C(19) and the reference mirror D(9).

6. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 4, characterized in that, Replace the coarsely adjusted two-axis four-frame external reference mirror B (7) with the Kuder 2 mirror (12). The specific installation and adjustment include: Remove the reference mirror B (7) and assemble the Kuder 2 mirror (12); at this time, the autocollimator (16), the Kuder 1 mirror (11) already installed at the first folding point, the Kuder 2 mirror (12) and the reference mirror C (8) are in sequence; and the light reflected by the reference mirror C (8) returns to the autocollimator (16) along the original path. Adjust the Kude 2 mirror (12) until the crosshairs of the autocollimator (16) are in the center field of view.

7. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 4, characterized in that, Using the theodolite D(20) set inside the two-axis four-frame, based on the right angle theorem, the reference mirrors D(9) and E(10), which should be orthogonally set on the corresponding Kuder optical path inside the two-axis four-frame, are aimed and adjusted, specifically including: Install the reference mirror E (10) onto the lead-out optical path of the Kud optical path; Since the reference mirror D(9) has been installed and adjusted, align the horizontally placed theodolite D(20) and the reference mirror D(9), and zero each line of sight; Rotate the theodolite D (20) 90 degrees toward the reference mirror E (10); Adjust the reference mirror E (10) to align the theodolite D (20) and the reference mirror E (10).

8. The method for assembling and adjusting the Kuder optical path in a two-axis four-frame structure according to claim 7, characterized in that, Using the theodolite D(20) set inside the two-axis four-frame, the installation position is aligned coaxially, and the angle between the reflecting surfaces is [missing information]. The aiming and adjustment between the reference reflector E (10) and the Kud 5 reflector (15) includes: Install the Kude 5 mirror (15) to the intersection of the extension line connecting the reference mirror E (10) and the theodolite D (20) and the two sides of the four-frame; The theodolite D(20), which is aligned with the reference mirror E(10), is rotated 90° towards the direction of the Kuder 5 mirror (15). Spend; Adjust the Kude 5 mirror (15) to align the theodolite D (20) and the Kude 5 mirror (15).

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