Coaxial alignment system and coaxial alignment method of cage type system

Abstract

The invention relates to the technical field of optics, in particular to a coaxial alignment system and a coaxial alignment method of a cage system, and the cage system comprises at least two supporting plates used for installing optical elements and a plurality of connecting rods connected with the supporting plates; the coaxial alignment system comprises an angle detection assembly, a displacement adjustment assembly and a controller. The angle detection assembly is installed on the cage type system and used for detecting space angle data of the cage type system in real time. One end of the displacement adjusting assembly is connected with the supporting plate, and the other end is used for being connected with an optical platform. The controller is electrically connected with the angle detection assembly and the displacement adjusting assembly and controls the displacement adjusting assembly to adjust the spatial position of the cage type system. According to the coaxial alignment system of the cage type system, the coaxial adjustment efficiency and adjustment precision of the cage type system can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of optical technologies, and particularly to a coaxial alignment system and a coaxial alignment method for a cage system. Background Art

[0002] As the core support structure in optical experiments, the cage system is widely used due to its high stability and modular design.

[0003] However, in the prior art, manual adjustment of rod holders in cooperation with physical spirit levels is relied on for alignment, which has significant deficiencies: manual operation is inefficient, it is difficult to accurately judge the parallelism of cage plates and the coaxiality of connecting rods, and it is easily affected by the deformation of connecting rods, resulting in optical path drift and coaxiality deviation. These problems seriously restrict the accuracy and efficiency of optical experiments. Therefore, there is an urgent need for a technical solution that can achieve coaxial alignment quickly and accurately. Summary of the Invention

[0004] In view of the above disadvantages of the prior art, the purpose of the present invention is to provide a coaxial alignment system and a coaxial alignment method for a cage system that can improve the adjustment efficiency and accuracy of the cage system.

[0005] To achieve the above object and other related objects, the present invention provides a coaxial alignment system for a cage system, where the cage system includes at least two support plates for mounting optical elements and a plurality of connecting rods connecting the support plates; the coaxial alignment system includes:

[0006] An angle detection component, installed on the cage system, for detecting the spatial angle data of the cage system in real time;

[0007] A displacement adjustment component, one end of which is connected to the support plate, and the other end is used to connect to an optical platform;

[0008] A controller, electrically connected to the angle detection component and the displacement adjustment component, and controlling the displacement adjustment component to adjust the spatial position of the cage system.

[0009] In an embodiment of the present invention, the coaxial alignment system for the cage system further includes a display module for displaying the pitch angle data, yaw angle data, and / or adjustment status of the cage system in real time, where the spatial angle data includes pitch angle data and yaw angle data.

[0010] In an embodiment of the present invention, the controller includes:

[0011] A data input interface, receiving the pitch angle data of the angle detection component;

[0012] A signal processing module, converting the pitch angle data into a height adjustment amount;

[0013] The drive output interface sends a drive signal to the displacement adjustment component.

[0014] In an embodiment of the present invention, the signal processing module includes an embedded circuit, and the embedded circuit converts the spatial angle data into a height adjustment amount according to the following formula:

[0015] ΔH = k·tan(θ);

[0016] where ΔH is the height adjustment amount; k is a proportionality constant, representing the height change caused by a change in the pitch angle θ per unit; and tan(θ) is the tangent value of the pitch angle θ.

[0017] In an embodiment of the present invention, the angle detection component includes at least a first sensor and a second sensor that are angle sensors, and the first sensor and the second sensor are fixed to the connecting rod or the support plate through a detachable mounting seat.

[0018] In an embodiment of the present invention, the displacement adjustment component includes an electric linear actuator, and the electric linear actuator is configured to be fixed to the optical platform.

[0019] In an embodiment of the present invention, the support plate is provided with a modular connection interface, and the modular connection interface includes through holes, threaded holes, and / or magnetic adsorption positions for quickly assembling with the connecting rod and external optical elements.

[0020] In an embodiment of the present invention, the cage system is an expandable structure, and supports constructing a multi-dimensional optical path by adding or replacing the support plate and the connecting rod.

[0021] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a coaxial alignment method applied to the coaxial alignment system of the cage system, and this method includes the following steps:

[0022] Automatic adjustment stage: The pitch angle of the cage system is collected in real time through the angle detection component; the controller calculates the lifting amount of the displacement adjustment component according to the pitch angle, and drives the displacement adjustment component to adjust the cage system to the target height;

[0023] Manual intervention stage: The heading angle deviation is displayed in real time through the display module of the controller; the user manually adjusts the horizontal positioning of the displacement adjustment component according to the heading angle deviation;

[0024] And / or overall calibration stage: The global height of the cage system is finely adjusted through the lifting button of the controller until the coaxiality meets the standard.

[0025] In an embodiment of the present invention, the steps of the controller calculating the lifting amount of the displacement adjustment component according to the pitch angle and driving the displacement adjustment component to adjust the cage system to the target height include:

[0026] Obtain the real-time measured value of the pitch angle;

[0027] Generate a height compensation amount according to the product of the tangent value of the pitch angle and the preset proportional coefficient;

[0028] Superimpose the height compensation amount on the initial height to generate the final target height command.

[0029] In summary, the present invention integrates the angle detection component and the displacement adjustment component, and combines the control of the controller to achieve the full-automatic or semi-automatic alignment of the cage system, thereby significantly improving the alignment efficiency and accuracy of the coaxiality of the cage system and reducing manual intervention; the problem of optical path drift is effectively suppressed through real-time monitoring and dynamic adjustment. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of the coaxial alignment system of the cage system in an embodiment of the present invention;

[0032] Figure 2 It is a schematic control diagram of the cage system in an embodiment of the present invention;

[0033] Figure 3 It is a method flow chart of the coaxial alignment method in an embodiment of the present invention;

[0034] Figure 4 It is a control logic diagram of the coaxial alignment system of the cage system in an alternative embodiment of the present invention;

[0035] Element number description: cage system 10, support plate 11, modular connection interface 111, connecting rod 12, angle detection component 20, first sensor 21, second sensor 22, detachable mounting seat 23, displacement adjustment component 30, electric lifting rod frame 31, optical support rod 32, controller 40. Detailed Embodiments

[0036] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for describing specific implementation manners and are not intended to limit the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are generally in accordance with conventional conditions or the conditions recommended by each manufacturer.

[0037] Please refer to Figures 1 to 4 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not intended to limit the implementable conditions of the present invention. Therefore, they do not have technical substance significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in this specification are only for the convenience of clear description and are not intended to limit the implementable scope of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the implementable scope of the present invention.

[0038] When an embodiment gives a numerical range, it should be understood that unless otherwise specified in the present invention, any value at both ends of each numerical range and any value between the two ends can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention, based on the understanding of those skilled in the art of the prior art and the description of the present invention, can also use any methods, devices, and materials similar to or equivalent to those described in the embodiments of the present invention to implement the present invention.

[0039] The Cage System 10 is a support and mounting structure used in optical experiments and optical equipment, aiming to provide a highly stable and modular way to mount optical components. The Cage System 10 usually consists of precise rods, connectors, clamps, and mounting plates, and complex optical paths are built by fixing optical components (such as lenses, prisms, filters, mirrors, etc.). With its high rigidity and modular design, the Cage System 10 offers great flexibility in construction and adjustment. The Cage System 10 uses metal rods and precise connectors to form a rigid framework, which can effectively prevent the influence of vibration and environmental changes on the Cage System 10. For experiments that require precise alignment, such as interferometry, spectral analysis, and laser system applications, the cage structure can ensure the stability of optical components and reduce the drift of the optical path. The Cage System 10 in this case can adopt a standardized and modular design, allowing users to configure it flexibly according to experimental needs. By combining rods of different lengths and clamps of standard sizes, users can quickly build a complex three-dimensional Cage System 10 and conveniently adjust and expand it. The Cage System 10 is compatible with optical platforms, track systems, and standard mounts 23 through standardized interfaces, supporting the integration of various optical accessories. Users can integrate optical components from different manufacturers into the same system, significantly improving the compatibility and versatility of the equipment.

[0040] In the field of optics, the pitch angle of the Cage System 10 refers to the inclination angle of the Cage System relative to the horizontal plane, specifically manifested as the front-back inclination of the system in the vertical plane. Changes in the pitch angle will affect the spatial position of optical components (such as lenses, mirrors, etc.), and thus affect the alignment and stability of the optical path. When one end of the Cage System is raised or lowered, the Cage System will rotate around its horizontal axis (usually the axis perpendicular to the optical path), forming a pitch angle.

[0041] In the field of optics, the heading angle of the Cage System refers to the rotation angle of the Cage System relative to a reference direction (usually the optical axis or the horizontal axis) in the horizontal plane. When the Cage System rotates left or right in the horizontal plane, a heading angle is formed. Changes in the heading angle will cause the optical components to shift in the horizontal direction, and thus affect the alignment and stability of the optical path.

[0042] Changes in both the pitch angle and the heading angle will lead to the following problems: First, optical path deviation. The positions of optical components change, resulting in the optical path deviating from the designed path, affecting the performance of the optical system. Second, alignment error. The relative positions between optical components change, which may cause the light beam to be unable to be accurately aligned. Third, system stability. Changes in the pitch angle may introduce vibration or instability, especially in high-precision optical experiments.

[0043] Please refer to Figure 1, the present invention provides a coaxial alignment system for a cage system. The cage system 10 includes at least two support plates 11 for mounting optical elements and a plurality of connecting rods 12 connecting the support plates 11; at least two movable fulcrums are provided on the cage system 10, and the movable fulcrums are hinged or ball-jointed to the cage system 10. It should be understood that the arrangement of the movable fulcrums should facilitate the coaxial alignment system to adjust the spatial position of the cage system.

[0044] The coaxial alignment system includes an angle detection component 20, a displacement adjustment component 30, and a controller 40;

[0045] The angle detection component 20 is installed on the cage system 10 for real-time detection of the spatial angle data of the cage system 10; one end of the displacement adjustment component 30 is connected to the support plate 11, and the other end is used to connect to an optical platform. That is, the displacement adjustment component 30 is at least one of the two movable fulcrums on the cage system 10. The other movable fulcrum can be a hinge fulcrum or the displacement adjustment component 30. For example, the displacement adjustment component 30 is configured to adjust the vertical height of the cage system 10 according to the pitch angle data; the controller 40 is electrically connected to the angle detection component 20 and the displacement adjustment component 30, and controls the displacement adjustment component 30 to adjust the spatial position of the cage system 10. Among them, the controller 40 converts the spatial angle parameter into a displacement adjustment amount through an embedded circuit; specific models of the controller 40 are, for example, 7SC601, 7SC602, 7SC603, 7SC604, 7SC605, 7SC606 of the 7SC6 series of motion controllers of Sefan Optoelectronics, such as SMC100CC and SMC100PP of the SMC100 series of motion controllers of Newport. The controller 40 can also be a PLC controller.

[0046] It should be noted that in specific implementation, the angle detection component 20 can be other angle sensors to enhance the detection dimension; the displacement adjustment component 30 can use a pneumatic drive mechanism or a piezoelectric ceramic actuator to replace the electric lifting rod to meet different precision and load requirements; the controller 40 can select a wireless communication module (such as Wi-Fi or Bluetooth) to achieve remote control, or integrate cloud algorithms to support multi-device collaborative adjustment; the connecting rod 12 and the support plate 11 of the cage system 10 can use lightweight composite materials or carbon fiber materials to optimize the system rigidity and reduce the self-weight. In addition, if the controller 40 has built-in algorithms, the control algorithms can introduce machine learning models to optimize the adjustment parameters through historical data and further improve the adaptive ability. The support plate 11 is the installation frame for optical elements, and there are two or more support plates 11, and the connecting rod 12 is three or more, which are selected according to actual needs. It should be understood that when the cage system 10 has two support plates 11 and the coaxial alignment system has one displacement adjustment component 30, the displacement adjustment component 30 is connected to one of the support plates 11, and the other support plate 11 of the cage system 10 is fixedly supported by an independent support column.

[0047] In this case, the angle detection component 20 (angle sensors, such as six-axis sensors, nine-axis sensors or inclinometers) is used to collect the spatial angle data of the cage system 10 in real time and transmit it to the controller 40 for data processing. The controller 40 generates adjustment instructions based on preset algorithms (such as calculating height deviation through trigonometric function relationships) or calculates spatial position compensation through a data processing circuit, and drives the displacement adjustment component 30 (such as an electric lifting rod) to perform three-dimensional spatial position compensation on the cage system 10, thereby eliminating the angle deviation. Specifically, after the sensor detects the pitch angle and the heading angle, the controller 40 calculates the target displacement through a proportional constant and a trigonometric function model, and controls the electric lifting rod to accurately adjust the height through a communication protocol (such as RS485), and finally realizes the dynamic coaxial alignment of the optical path.

[0048] The present invention integrates the angle detection component 20 and the displacement adjustment component 30, and combines the control of the controller 40 to achieve full-automatic or semi-automatic alignment of the cage system 10, thereby significantly improving the alignment efficiency and accuracy and reducing manual intervention; effectively suppressing optical path drift through real-time monitoring and dynamic adjustment; the modular design is compatible with a variety of optical platforms, enhancing the system versatility; through the low-power embedded circuit and portable power supply design, it ensures stable operation in an environment without external power supply; in addition, the compact structure and standardized interface of the system facilitate integration into existing experimental devices, further improving the practicality.

[0049] Please refer to Figure 1, as an alternative embodiment of this case, the coaxial alignment system of the cage system further includes a display module for real-time displaying the pitch angle data, heading angle data, and / or adjustment status of the cage system 10, wherein the spatial angle data includes pitch angle data and heading angle data.

[0050] It should be noted that the traditional cage system 10 lacks an intuitive status feedback mechanism during alignment. Users cannot grasp the spatial angle deviation and adjustment process of the cage system 10 in real time, resulting in the adjustment process relying on empirical judgment or external device assistance, and there are problems of low operation efficiency and high misjudgment risk. Specifically, the existing solutions do not provide a visualization interface for pitch angle and heading angle data. It is difficult for users to quickly locate the deviation direction and amplitude, and they cannot monitor the response status of the adjustment actions in real time, affecting the alignment accuracy and operation convenience.

[0051] In this case, the display module can communicate with the controller 40 through an embedded circuit, and receive the spatial angle data (such as pitch angle, heading angle) from the angle detection component 20 and the real-time action status of the displacement adjustment component 30. The controller 40 converts the original data into readable information (such as numerical values, graphics, or dynamic indicators), and visualizes it through a display screen (such as LCD, OLED). Specifically, after the pitch angle and heading angle data are collected by, for example, a six-axis sensor, they are processed by the algorithm of the controller 40 to generate a standardized output signal, which drives the display module to update the interface content. The adjustment status is then mapped to the display interface in real time through the feedback signal of the displacement adjustment component 30 (such as the position of the lifting rod, response speed), forming a complete dynamic monitoring closed loop.

[0052] The present invention realizes the full transparency and intelligence of the alignment process by introducing a display module, including real-time displaying the pitch angle, heading angle data, and adjustment status, enabling users to intuitively grasp the system deviation information, significantly reducing human misjudgment; assisting users to quickly complete manual fine-tuning through visual feedback, improving operation efficiency; combining with the dynamic data update function, enhancing the traceability of the system status, and facilitating experimental recording and analysis.

[0053] In specific implementations, the display module can be implemented in the following ways: an interactive display interface that integrates touchscreen functionality, allowing users to directly input adjustment instructions or switch display modes through the interface; multimodal feedback that combines sound prompts or LED indicators to provide multi-sensory warnings when the angle exceeds the limit or the adjustment is completed; remote display extension that synchronizes data to a mobile terminal or computer through a wireless communication module (such as Bluetooth, Wi-Fi) to achieve remote monitoring and data recording; enhanced display functionality that uses AR (augmented reality) technology to superimpose angle deviation information onto the actual optical path scene to provide immersive adjustment assistance; modular design, where the display module can be installed independently or separated from the controller 40, supporting flexible configuration of the display position and size according to experimental requirements; in addition, the display content can be further extended to battery power, historical data curves, or system self-check status to improve information density and usability.

[0054] As an optional embodiment of this case, the controller 40 includes a data input interface, a signal processing module, and a drive output interface. The data input interface receives the pitch angle data of the angle detection component 20; the signal processing module converts the pitch angle data into a height adjustment amount; the drive output interface sends a drive signal to the displacement adjustment component 30.

[0055] Among them, the signal processing module can dynamically calculate the target height and control the displacement adjustment component 30 to continuously adjust by obtaining updated pitch angle data in real time.

[0056] It should be noted that in the traditional automatic alignment device of the cage system 10, there are lag and singularity in the data processing and adjustment functions of the controller 40, resulting in the inability to respond to angle changes in real time and dynamically adjust the height. Specifically, the existing solutions rely on static algorithms or fixed parameters to calculate the adjustment amount, making it difficult to adapt to continuous angle fluctuations in a dynamic experimental environment; in addition, the lack of a closed-loop feedback mechanism leads to a lack of self-adaptability in the adjustment process, and it is easy to cause adjustment errors due to sensor data update delays or external interference, affecting the long-term stability of optical path coaxiality.

[0057] In this case, the data input interface receives the pitch angle data of the angle detection component 20 in real time and transmits it to the signal processing module for parsing and conversion. The signal processing module calculates the height adjustment amount based on a preset algorithm (such as a trigonometric function model or a proportional integral derivative control) or a logic control circuit, and generates a drive instruction or an electrical signal that matches the current pitch angle change. The drive output interface converts the instruction into an electrical signal (such as a PWM pulse or a digital level) to control the displacement adjustment component 30 to perform an accurate lifting action. Through a three-step process of circularly obtaining updated data, dynamically calculating the target height, and real-time outputting drive signals, the controller 40 forms a closed-loop feedback to achieve continuous optimization and stability of the spatial position of the cage system 10. Among them, the displacement adjustment component 30 is, for example, an electric lifting rod, and the electric lifting rod includes an electric lifting rod frame 31 and an optical support rod 32 that is drivingly connected to the electric lifting rod frame 31. The electric lifting rod frame 31 includes a motor 311, and the lifting of the optical support rod 32 can be achieved through the drive of the motor 311. The models are, for example, Z812B, LNR50SE, and M-ILS150PP.

[0058] Through optimizing the architecture of the controller 40, the present invention realizes real-time dynamic adjustment and precise height compensation. Through the real-time calculation ability of the signal processing module, the pitch angle data is quickly converted into a height adjustment amount, significantly improving the response speed and adjustment accuracy; by using a dynamic closed-loop control mechanism, continuously tracking the angle change and real-time updating the adjustment instruction, effectively suppressing the optical path drift.

[0059] In a specific implementation manner, the controller 40 of this case can replace the traditional proportional calculation by introducing a fuzzy control or a neural network algorithm to improve the adjustment adaptability in complex scenarios; the data input interface supports multiple communication protocols and adapts to different models of sensors; the drive output interface can integrate an analog signal output function and be compatible with pneumatic or hydraulic actuators; and the signal processing module can be split into an edge computing unit and a cloud collaborative processing module to reduce latency through edge computing and optimize global parameters in the cloud; a redundant check and abnormal data filtering logic sub-module is embedded in the signal processing module to ensure the adjustment stability under sensor noise or communication interference.

[0060] As an optional embodiment of this case, the signal processing module includes an embedded circuit, and the embedded circuit converts the spatial angle data into a height adjustment amount according to the following formula:

[0061] ΔH = k·tan(θ);

[0062] where ΔH is the height adjustment amount; k is a proportionality constant, indicating the height change caused by each unit of pitch angle change; tan(θ) is the tangent value of the pitch angle.

[0063] It should be noted that in the traditional automatic alignment device of the cage system 10, the conversion from angular data to height adjustment amount relies on empirical estimation or a simplified linear model, resulting in insufficient adjustment accuracy and limited adaptability. Specifically, the existing solutions do not fully consider the non-linear relationship between the pitch angle and height change. Especially when there is a large angular deviation, cumulative errors are likely to occur. At the same time, the static proportional coefficient is difficult to adapt to cage systems 10 with different geometric structures, resulting in a lack of universality in the calculation of the adjustment amount and affecting the reliability of optical path coaxial alignment.

[0064] In this case, the core principle of the signal processing module is to convert the trigonometric function relationship of the pitch angle (θ) into the height adjustment amount (ΔH) through an embedded circuit. Specifically, after the embedded circuit receives the real-time pitch angle data collected by the angle sensor, it performs operations based on the formula ΔH = k·tan(θ), where k is a proportional constant related to the geometric parameters of the system. This formula accurately describes the non-linear relationship between the pitch angle and the vertical height change through the tangent function, ensuring the accuracy of the adjustment amount calculation. The operation result is converted into a control signal through the drive output interface to drive the displacement adjustment component 30 (such as an electric lifting rod) to perform corresponding lifting actions. Through cyclic acquisition, calculation, and adjustment, a dynamic closed-loop control is formed to continuously optimize the spatial position of the cage system 10.

[0065] The present invention utilizes the mathematical relationship between the tangent value of the pitch angle and height change to accurately represent the non-linear geometric response, reducing the angle-height mapping error. The introduction of the proportional constant k allows the system to flexibly adapt to cage systems 10 with different sizes or structures, enhancing universality. The real-time calculation ability of the embedded circuit ensures the rapid conversion of dynamic angular data into adjustment instructions, improving the efficiency of closed-loop control. In addition, the formulaic model simplifies the parameter calibration process and reduces the complexity of system debugging.

[0066] In a specific implementation, for the above formula, the value of k can be dynamically adjusted according to the system load or environmental temperature to enhance the adaptive ability. It can also combine the data of the inclination sensor and the displacement sensor, and optimize the angle measurement value through Kalman filtering to improve the reliability of the input data.

[0067] Please refer to Figure 1 , as an optional embodiment of this case, the angle detection component 20 at least includes a first sensor 21 and a second sensor 22 that are angle sensors. Both the first sensor 21 and the second sensor 22 are fixed to the connecting rod 12 or the support plate 11 through a detachable mounting seat 23 for real-time detection of the pitch angle and yaw angle of the cage system 10.

[0068] It should be noted that existing solutions mostly adopt single-axis sensors with fixed installation, which cannot comprehensively capture the spatial angle changes of the cage system 10 (such as the linkage deviation between the pitch angle and the heading angle), and the sensor position is not adjustable, making it difficult to adapt to the detection requirements of different experimental scenarios. In addition, the insufficient installation stability of the sensor is vulnerable to vibration interference, affecting data reliability, and the fixed encapsulation design requires the disassembly of the overall structure when replacing or upgrading the sensor, increasing the maintenance complexity.

[0069] In this case, the angle detection component 20 realizes high-precision and multi-dimensional spatial angle monitoring through the cooperation of the angle sensor and the detachable mounting base 23. Specifically, the six-axis sensor is fixed to the preset interfaces of the connecting rod 12 or the support plate 11 through screws, buckles or magnetic mounting bases 23 to collect the pitch angle, heading angle and rotation angle data of the cage system 10 in real time; among them, the first sensor 21 detects the heading angle of the cage system 10, and the second sensor 22 detects the pitch angle of the cage system 10; for example, when the cage system 10 is placed horizontally, the first sensor 21 is generally horizontally arranged on the two parallel connecting rods 12 of the cage system 10; the second sensor 22 is generally vertically arranged on the two connecting rods 12 of the cage system 10.

[0070] Through the combined design of the detachable mounting base 23 and the angle sensor, the present invention significantly improves the flexibility and comprehensiveness of angle detection. The six-axis or nine-axis sensor can synchronously detect the pitch angle, heading angle and multi-dimensional spatial angle data, enhancing the integrity of deviation analysis; the detachable mounting base 23 allows for quick replacement or position adjustment of the sensor to adapt to different configurations of the cage system 10 and experimental requirements; the modular design simplifies the maintenance process and reduces the system upgrade cost. In addition, the highly stable mounting base 23 can effectively suppress vibration interference and ensure the long-term reliability of the detection data.

[0071] In specific implementations, the present invention can also combine a six-axis sensor with a laser rangefinder to improve the angle detection accuracy through multi-source data fusion; a slide rail or a gimbal mounting base 23 can also be used to allow the sensor to freely adjust the detection direction in three-dimensional space; the sensor can be integrated with Bluetooth or ZigBee communication functions to eliminate cable constraints and simplify the installation process; multiple sensors can be deployed at key positions to improve the system fault tolerance through data cross-verification; temperature or vibration compensation algorithms can also be embedded in the sensor to suppress the influence of external interference on the detection accuracy.

[0072] Please refer to Figure 1, as an alternative embodiment of this case, a position adjustment component (not shown in the figure) is provided on one side of the displacement adjustment component 30. The position adjustment component is perpendicularly connected to the displacement adjustment component 30. The position adjustment component is used to adjust the position of the displacement adjustment component 30 according to the heading angle detected by the first sensor 21, so as to adjust the heading angle of the cage system 10. The structures of the position adjustment component and the displacement adjustment component 30 can be the same or different, as long as the adjustment purpose and adjustment accuracy can be achieved. The displacement adjustment component 30 and the position adjustment component can be arranged in the same plane. Generally, the position adjustment component is placed horizontally, the displacement adjustment component 30 is placed vertically, the position adjustment component and the displacement adjustment component 30 are perpendicularly arranged, and both the position adjustment component and the displacement adjustment component 30 are electrically connected to the controller 40, so as to realize the automatic adjustment of the pitch angle and heading angle of the cage system 10, and further realize the coaxial automatic alignment adjustment of the cage system 10.

[0073] Please refer to Figure 1 , as an alternative embodiment of this case, the displacement adjustment component 30 includes an electric linear actuator, and the electric linear actuator is fixed to the positioning structure of the optical platform through a standardized interface; the electric linear actuator corrects the height adjustment amount in real time through the output signal of the angle detection component 20.

[0074] It should be noted that the existing solutions use non-standardized interfaces or manual adjustment devices, resulting in difficulties in adapting to the positioning structure of the optical platform, a cumbersome installation process and easy introduction of positioning deviations; at the same time, it is difficult to achieve micron-level precise adjustment with manual or non-electric drive methods, which cannot meet the high-precision optical path alignment requirements and restricts the experimental efficiency and repeatability.

[0075] In this case, the electric linear actuator (such as a ball screw mechanism driven by a stepper motor or an electric telescopic rod) is rigidly connected to the positioning hole or guide rail structure of the optical platform through a standardized interface (such as a plug, a flange or a quick-release card slot) to ensure the consistency of the installation reference. After receiving the drive signal sent by the controller 40, the electric linear actuator converts the electrical signal into a linear displacement and pushes the cage system 10 to move in the vertical or horizontal direction. The geometric matching and locking mechanism of the standardized interface (such as screw fastening, elastic buckle) jointly suppress the vibration and offset during the adjustment process and ensure the accurate transmission of the adjustment action.

[0076] Through the collaborative design of an electric linear actuator and a standardized interface, the present invention significantly improves the adjustment accuracy and system compatibility. For example, the standardized interface ensures that the displacement adjustment component 30 is quickly and accurately fixed to the positioning structure of the optical platform, reducing installation errors; the electric linear actuator provides a high-resolution linear displacement output to achieve sub-millimeter precise adjustment; the modular design adapts to various optical platform specifications, enhancing the system versatility. In addition, the automated feature of electric drive reduces the frequency of manual intervention, improving the experimental efficiency and repeatability.

[0077] In a specific implementation, the displacement adjustment component 30 can also use a piezoelectric ceramic actuator or a voice coil motor to replace the electric linear actuator to adapt to high-frequency and micro-amplitude adjustment scenarios; the standardized interface can be a dovetail groove, a magnetic adsorption base or a vacuum adsorption structure, which is compatible with non-standard optical platforms; a pressure sensor or a displacement feedback unit can also be embedded in the standardized interface to monitor the installation state in real time and compensate for positioning deviations.

[0078] Please refer to Figure 1 , as an optional embodiment of this case, the support plate 11 is provided with a modular connection interface 111, and the modular connection interface 111 includes through holes, threaded holes and / or magnetic adsorption positions for quickly assembling with the connecting rod 12 and external optical elements.

[0079] It should be noted that the connection method of the support plate 11 of the traditional cage system 10 relies on a single fixed structure (such as welding or gluing), resulting in low assembly efficiency, poor compatibility and insufficient expandability. In this case, the modular connection interface 111 realizes rapid assembly and high compatibility through the collaborative design of multiple physical connection methods. Specifically, the through hole allows the connecting rod 12 or the optical element to pass through the support plate 11, and rigid fixation is achieved through a tightening screw or a locking nut; the threaded hole provides a threaded mating interface, which adapts to standard screws or quick-release knobs to meet different load requirements; the magnetic adsorption position forms a non-contact adsorption with the optical element containing ferromagnetic material by embedding a permanent magnet or an electromagnetic structure, simplifying the installation process. The three types of interfaces can be used alone or in combination according to experimental needs to form a multi-modal connection scheme, taking into account flexibility, stability and operation convenience.

[0080] Through the integrated design of the modular connection interface 111, the present invention significantly improves the assembly efficiency and expansion ability of the cage system 10. For example, the combination of through holes, threaded holes and magnetic adsorption positions supports the rapid positioning and stable fixation of the connecting rod 12 and the optical element, reducing the manual adjustment time; the modular interface is compatible with various standard-size accessories, realizing seamless integration of cross-vendor equipment; the magnetic adsorption position provides a tool-free quick disassembly and assembly function, facilitating the flexible adjustment of the optical path layout during the experiment. In addition, the redundant design of the interface (mechanical fastening and magnetic adsorption complementarity) enhances the connection reliability and ensures stability in a complex experimental environment.

[0081] Please refer to Figure 1 , as an alternative embodiment of this case, the cage system 10 is an expandable structure, supporting the construction of multi-dimensional optical paths by adding or replacing the support plate 11 and the connecting rod 12.

[0082] It should be noted that the cage system 10 of the traditional cage system 10 is fixed and has a single dimension, making it difficult to flexibly construct complex optical paths, resulting in limited experimental configuration and insufficient scalability. In this case, the support plate 11 and the connecting rod 12 are quickly assembled through modular interfaces such as through holes, threaded holes or magnetic adsorption positions. Users can add or replace components according to the target optical path dimension. For example, the longitudinal range of the optical path can be extended by extending the length of the connecting rod 12, or multiple-node optical path branches can be constructed by increasing the number of support plates 11. All component interfaces follow unified geometric standards and mechanical specifications to ensure the rigidity of the extended structure and the positioning accuracy of optical elements. The controller 40 and the sensor can be extended synchronously, and the dynamic alignment ability of the entire system can be maintained by adding new detection points and adjustment units.

[0083] The present invention quickly builds multi-dimensional optical paths (such as ring-shaped, cross or layered optical paths) through the free combination of modular support plates 11 and connecting rods 12; the standardized interface supports the plug-and-play replacement or extension of components, reducing the time-consuming of system reconstruction; it is compatible with a variety of optical element layout schemes, meeting the diverse needs from basic experiments to complex prototype development. In addition, the expandable structure reduces the system redundancy cost, and users only need to expand components as needed without purchasing a complete new system.

[0084] In specific implementation, the present invention can adopt spherical hinges or universal joint interfaces to support the multi-angle splicing of the connecting rod 12 to realize the construction of non-orthogonal optical paths; multi-channel interfaces are integrated in the support plate 11 to allow multiple groups of connecting rods 12 to be installed simultaneously to form optical path bifurcations; telescopic connecting rods 12 or articulated support plates 11 can be adopted to realize the rapid expansion and contraction and space optimization of the system; an optical path topology analysis algorithm is embedded in the controller 40 to automatically generate adjustment strategies according to newly added components; carbon fiber or aluminum alloy materials are used for the support plate 11 and the hollow connecting rod 12 to reduce the self-weight of the extended system. In addition, the cage system 10 can integrate pre-installed slots for optical elements to support the plug-and-play deployment of elements such as lenses and mirrors, further simplifying the process of constructing multi-dimensional optical paths.

[0085] Please refer to Figure 1-2, specifically, in this case, there are M4 through holes at the four corners of the support plate 11 through which the connecting rod 12 of the cage system 10 can pass. The support plates 11 can be fixed together through the connecting rod 12 of the cage system 10. The connecting rod 12 of the cage system 10 can be fixed through the pre - reserved tightening screw holes on the support plate 11 with tightening screws. The pre - reserved tightening screw holes above the support plate 11 are used to fix the lenses installed in the support plate 11. The displacement adjustment component 30 includes an optical support rod 32, and there are pre - reserved M4 threaded holes below the support plate 11 for fixing the optical support rod 32. The optical support rod 32 is inserted into the middle hole of the displacement adjustment component 30 (such as an electric lifting rod frame 31) and is fixed through the internal structure of the electric lifting rod frame 31. The electric lifting rod frame 31 is fixed to the optical platform positioning hole through a fork block (such as a dovetail groove). The precise adjustment function of the electric lifting rod enables the optical component to be finely adjusted in three - dimensional space to ensure precise co - axis with other optical elements. The six - axis sensor is fixed to the detachable mounting base 23 through screws, and the detachable mounting base 23 is fixed to the connecting rod 12 through the pre - reserved tightening screw holes. These sensors can detect the displacement and rotation of the optical element to ensure that the accuracy during the alignment process is not affected by any errors. The display module and the embedded circuit of the controller 40 are placed between the electric lifting rod frames 31, which can save floor space. The electric lifting rod frame 31 is controlled through RS485, and the detection data of the six - axis sensor is received through RS485. The embedded circuit is the control center of the entire system, responsible for receiving data from the six - axis sensor and controlling the actions of the electric lifting rod according to the sensor feedback. Through RS485 communication, the circuit can precisely control the lifting and adjustment of the lifting rod to complete the entire alignment process. At the same time, there are up and down buttons on the embedded circuit to control the lifting of the electric lifting rod frame 31 simultaneously. The lithium battery is fixed to the rear of the embedded circuit to provide +12V power for the embedded circuit and the display module of the controller 40, making the system have good portability and suitable for use in experimental environments without external power. In addition, the compact design and modular structure of the system enable it to be easily integrated into other equipment and experimental platforms in the laboratory. The co - axis alignment system is integrated with a low - power micro - control unit (MCU), a high - performance LCD monitor, and an angle sensor. Through precise hardware design and the control of intelligent embedded software or embedded circuits, the real - time monitoring and display of the pitch angle and heading angle of the cage system 10 are realized. In the co - axis alignment system, the core control unit uses a low - power MCU, which is responsible for the data processing and control tasks of the system. The MCU precisely calculates and obtains the pitch angle and heading angle of the cage system 10 through real - time data interaction with the six - axis sensor. The six - axis sensor can simultaneously detect and provide the angle information of the system in three - dimensional space, covering key angles such as the pitch and heading of the system, providing basic data support for co - axis alignment. After quickly processing these sensor data, the MCU converts the results into intuitive angle values and feeds them back to the user.The LCD monitor is located at the front end of the embedded system and serves as the main interface for user-system interaction. It uses a high-resolution liquid crystal display screen to real-time display the pitch angle and heading angle values of the cage system 10. The operation interface is simple and intuitive, facilitating users to quickly grasp the system status. The backlight design of the display screen ensures clear data display even in low-light environments, providing users with a stable and reliable display effect. In addition, the display screen can also show other auxiliary information, such as battery power, communication status, etc., further enhancing the operability and usability of the system.

[0086] Please refer to Figure 1-3 , the present invention provides a coaxial alignment method, which is applied to the coaxial alignment system of the cage system. The method includes the following steps:

[0087] Automatic adjustment stage:

[0088] The pitch angle of the cage system 10 is collected in real time through the angle detection component 20;

[0089] The controller 40 calculates the lifting amount of the displacement adjustment component 30 according to the pitch angle and drives the displacement adjustment component 30 to adjust the cage system 10 to the target height;

[0090] Manual intervention stage:

[0091] The heading angle deviation is displayed in real time through the display module of the controller 40; the user manually adjusts the horizontal positioning of the displacement adjustment component 30 according to the heading angle deviation;

[0092] Overall calibration stage:

[0093] The cage system 10 is globally height fine-tuned through the lifting button of the controller 40 until the coaxiality meets the standard.

[0094] It should be noted that the traditional coaxial alignment method of the cage system 10 relies on manual adjustment, resulting in difficulty in balancing efficiency and accuracy. Manual adjustment lacks real-time data guidance and relies on empirical judgment, which is prone to introducing human errors.

[0095] In this case, the coaxial alignment process is decomposed into three progressively optimized stages: the automatic adjustment stage, the angle detection component 20 collects pitch angle data in real time, the controller 40 calculates the lifting amount based on a trigonometric function model (such as ΔH = k·tanθ), and drives the displacement adjustment component 30 to complete dynamic compensation in the vertical direction, quickly eliminating pitch deviation; in the manual intervention stage, the controller 40 can also calculate the heading angle deviation value based on a trigonometric function model (such as ΔX = k1·sinθ1, where ΔX is the offset in the horizontal direction, k is a proportional constant related to the geometric structure of the system, and θ1 is the heading angle), and the display module displays the heading angle deviation value or graphical indication in real time. The user manually adjusts the horizontal positioning (such as translation or rotation) of the displacement adjustment component 30 according to the feedback, making up for the dimensional limitations of automatic adjustment through human-machine interaction; in the overall calibration stage, the controller 40 provides a global lifting button, and the user performs micron-level height fine-tuning on the cage system 10 based on comprehensive detection data (such as the coaxiality laser detection result), finally achieving the coordinated convergence of multi-dimensional deviations. The three stages are executed in sequence, forming a closed-loop optimization process of "coarse adjustment - fine adjustment - final adjustment".

[0096] The present invention realizes efficient and precise multi-dimensional coaxial alignment through a phased collaborative adjustment strategy; in the automatic adjustment stage, the pitch angle deviation is quickly eliminated, reducing the accumulation of basic errors; in the manual intervention stage, combined with visual feedback, it guides the user to accurately correct the heading angle deviation, improving the efficiency of human-machine collaboration; in the overall calibration stage, the local optimization results are integrated through global fine-tuning to ensure that the final coaxiality meets the standard. In addition, the phased design takes into account both automation efficiency and manual flexibility, adapting to diverse requirements from conventional experiments to high-precision debugging.

[0097] In specific implementation, it should be understood that in this case, the stage sequence can also be dynamically switched according to the deviation threshold. For example, when the heading angle deviation is too large, manual intervention is given priority; during manual adjustment, the controller 40 can provide resistance feedback or auxiliary fine movement functions to improve the operation accuracy; during the calibration stage, the data input of a third-party detection device (such as an interferometer) can be integrated, and the calibration reliability can be further improved through multi-source verification.

[0098] As an optional embodiment of this case, the steps for the controller 40 to calculate the lifting amount of the displacement adjustment component 30 according to the pitch angle and drive it to adjust to the target height include:

[0099] Obtain the real-time measurement value of the pitch angle;

[0100] Generate a height compensation amount according to the product of the tangent value of the pitch angle and a preset proportional coefficient;

[0101] Superimpose the height compensation amount on the initial height to generate a final target height command.

[0102] It should be noted that the existing solutions do not accurately quantify the non-linear geometric relationship between the pitch angle and the height change, especially in complex optical paths or multi-dimensional deviation scenarios, where cumulative errors are likely to occur; the static proportionality coefficient is difficult to adapt to different system configurations, resulting in a lack of universality in the calculation of the adjustment amount, which affects the alignment efficiency and stability.

[0103] In this case, in terms of data acquisition, the controller 40 collects the current pitch angle measurement value in real time through the angle detection component 20 (such as a six-axis sensor); in terms of compensation amount calculation, based on the formula ΔH = k·tanθ, the tangent value of the pitch angle is multiplied by the preset proportionality coefficient k to generate the height compensation amount ΔH, where k represents the geometric characteristics of the system (such as the rod length and the distance between the fulcrums); in terms of target height generation, ΔH is superimposed on the initial height H0 (the system reference height) to obtain the final target height H_target = H0 + ΔH; the controller 40 controls the displacement adjustment component 30 (such as an electric lifting rod) to perform the lifting action by driving and outputting a control signal until the cage system 10 reaches H_target. By repeatedly executing the above steps, dynamic closed-loop adjustment is realized, and the optical path coaxiality is continuously optimized.

[0104] As an optional embodiment of this case, the controller 40 is built-in with a temperature sensor to monitor the ambient temperature change in real time, and dynamically corrects the height adjustment amount through the linear compensation formula ΔH1 = α·ΔT. Among them, α is the temperature compensation coefficient, which is calibrated according to the thermal expansion characteristics of the system material to suppress the optical path offset caused by thermal deformation. This mechanism effectively guarantees the alignment stability in high and low temperature environments or during long-term operation, and is especially suitable for experimental scenarios with significant laser temperature rise or day-night temperature difference.

[0105] As an optional embodiment of this case, the coaxial alignment system of the cage system is applicable to the automatic alignment scenarios in laboratory cage systems, industrial precision detection equipment or medical imaging devices.

[0106] Workflow:

[0107] The workflow of the present invention is as follows. Taking the cage system 10 having two connecting plates and four connecting rods 12 as an example, and the angle detection component 20 including two six-axis controllers 40 and the displacement adjustment component 30 including two electric lifting rod frames 31 as an example, the description is as follows:

[0108] Before the main circuit of the coaxial alignment system is powered on, the cage system 10 needs to be built first.

[0109] First, insert the four connecting rods 12 of the cage system 10 into the two support plates 11, and fix the connecting rods 12 of the cage system 10 with tightening screws. The optical support rod 32 is connected and fixed to the support plate 11 using its own M4 screws. And it is fixed through the holes on the electric lifting rod. The electric lifting rod frame 31 is fixed to the positioning holes of the optical platform through fork blocks, ensuring that the electric lifting rod frame 31 is basically parallel to the positioning holes of the optical platform. Fix the six-axis sensor to the detachable mounting base 23 with screws, and the detachable mounting base 23 is fixed to the connecting rod 12 of the cage system 10 with tightening screws.

[0110] Connect the six-axis sensor and the electric lifting rod frame 31 to the embedded circuit of the controller 40 through RS485. Power on the coaxial alignment system. The six-axis sensor first transmits the deflection values of the pitch angle (second sensor 22) and the heading angle (first sensor 21) of the cage system 10 to the MCU, and the MCU displays them in real time through the LCD display screen. The MCU internally scans the voltage of the lithium battery with the ADC and obtains the battery power value through the built-in algorithm and transmits it to the LCD display screen for real-time display through the I / O port. According to the pitch angle of the cage system 10 collected by the second sensor 22 (six-axis sensor), the MCU obtains the height that the remote electric lifting rod frame 31 should adjust through the built-in algorithm or the embedded control circuit.

[0111] The MCU controls the lifting of the remote electric lifting rod frame 31 through RS485 according to the adjusted height obtained by the algorithm or the embedded control circuit. The experimenter manually adjusts the positions of the electric lifting rod frames 31 G1 and G2 according to the deflection value of the heading angle of the cage system 10 displayed on the LCD display screen to make it parallel to the positioning holes of the optical platform. After the cage system 10 is completely aligned, the experimenter uses the lifting button on the embedded circuit of the controller 40 to adjust the overall height of the cage system 10.

[0112] Regarding the pitch angle height adjustment principle and the alignment process:

[0113] The pitch angle height adjustment principle and the alignment process of the present invention are as follows:

[0114] First, the MCU obtains the current pitch angle value collected by the second sensor 22 (six-axis sensor), denoted as θ.

[0115] The MCU sets the original height of the electric lifting rod frame 31 as H0, which is the height when the system is in an ideal horizontal state (i.e., the height when the pitch angle is 0 degrees). By calculating the target height H target , this height is the height adjustment value caused by the change of the pitch angle.

[0116] Since the change of the pitch angle will cause the front and back offset of the system, the adjustment of the height can be regarded as a linear relationship based on trigonometric functions. The vertical position change of the electric lifting rod is proportional to the pitch angle:

[0117] ΔH = f(θ)k·tanθ;

[0118] Where ΔH is the adjusted height change, and k is a proportionality constant representing the height change caused by a change in the pitch angle per unit. This constant is pre-determined according to the geometric structure of the actual system and the specifications of the electric lift rod. tanθ is the tangent value of the pitch angle θ, which reflects the height difference caused by the change in the pitch angle.

[0119] After calculating the height change ΔH, the target height H target can be obtained by the following formula:

[0120] H target = H0 + ΔH = H0 + k·tanθ;

[0121] Where H0 is the initial height (the default height of the system when the pitch angle is 0). θ is the current pitch angle (obtained from the second sensor 22). k is a known proportionality constant representing the height change caused by a change in the pitch angle per unit.

[0122] The MCU converts the calculated target height H target , into a control signal for the electric lift rod frame 31. Through the RS485 communication protocol, the MCU controls the lifting of the electric lift rod to achieve precise adjustment of the height.

[0123] During the operation of the system, the six-axis sensor continuously monitors the change in the pitch angle and transmits the updated pitch angle data to the MCU. The MCU recalculates the target height based on the new pitch angle value and adjusts the height of the electric lift rod frame 31 in real time to maintain the ideal alignment state of the system.

[0124] The coaxial alignment system of the cage system provided by the present invention greatly reduces the complexity of aligning the cage system 10 in the laboratory environment and greatly improves the timeliness of installation and adjustment of the laboratory cage system; by designing a reasonable mechanical structure and combining with a controller, it can quickly and accurately detect whether there are small deflections in the heading angle and pitch angle of the cage system 10; adopting a low-power design and having a reasonable size, it can be conveniently applied to various laboratory cage systems.

[0125] In summary, the present invention effectively overcomes some practical problems in the prior art and thus has high utilization value and practical significance.

[0126] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A coaxial alignment system for a cage system, characterized in that, The cage system includes at least two support plates for mounting optical elements and multiple connecting rods connecting the support plates; the coaxial alignment system includes: An angle detection component, mounted on the cage system, for real-time detecting the spatial angle data of the cage system; A displacement adjustment component, one end of which is connected to the support plate, and the other end is used for connecting to an optical platform; A controller, electrically connected to the angle detection component and the displacement adjustment component, and controlling the displacement adjustment component to adjust the spatial position of the cage system.

2. The coaxial alignment system of the cage system according to claim 1, characterized in that, It further includes a display module for real-time displaying the pitch angle data, heading angle data and / or adjustment status of the cage system, wherein the spatial angle data includes pitch angle data and heading angle data.

3. The coaxial alignment system of the cage system according to claim 2, characterized in that, The controller includes: A data input interface, receiving the pitch angle data of the angle detection component; A signal processing module, converting the pitch angle data into a height adjustment amount; A drive output interface, sending a drive signal to the displacement adjustment component.

4. The coaxial alignment system of the cage system according to claim 3, characterized in that The signal processing module includes an embedded circuit, and the embedded circuit converts the spatial angle data into a height adjustment amount according to the following formula: ΔH = f(θ) = k * tan(θ); Wherein, ΔH is the height adjustment amount; k is a proportionality constant, representing the height change caused by the change of each unit pitch angle θ; tan(θ) is the tangent value of the pitch angle θ.

5. The coaxial alignment system of the cage system according to claim 1, characterized in that, The angle detection component at least includes a first sensor and a second sensor that are angle sensors, and the first sensor and the second sensor are fixed to the connecting rod or the support plate through a detachable mounting seat.

6. The coaxial alignment system of the cage system according to claim 1, characterized in that, The displacement adjustment component includes an electric linear actuator, and the electric linear actuator is configured to be fixed to the optical platform.

7. The coaxial alignment system of the cage system according to claim 1, characterized in that, The support plate is provided with a modular connection interface, and the modular connection interface includes through holes, threaded holes and / or magnetic adsorption positions for quickly assembling with the connecting rod and external optical elements.

8. The coaxial alignment system of the cage system according to claim 1, characterized in that, The cage system is an expandable structure, and supports constructing a multi-dimensional optical path by adding or replacing the support plate and the connecting rod.

9. A coaxial alignment method, characterized in that, A coaxial alignment system applied to the cage system according to any one of claims 1-8, the method includes the following steps: Automatic adjustment stage: The pitch angle of the cage system is collected in real time through the angle detection component; the controller calculates the lifting amount of the displacement adjustment component according to the pitch angle, and drives the displacement adjustment component to adjust the cage system to the target height; Manual intervention stage: The heading angle deviation is displayed in real time through the display module of the controller; the user manually adjusts the horizontal positioning of the displacement adjustment component according to the heading angle deviation; And / or overall calibration stage: The global height of the cage system is finely adjusted through the lifting button of the controller until the coaxiality meets the standard.

10. The coaxial alignment method according to claim 9, characterized in that, The step that the controller calculates the lifting amount of the displacement adjustment component according to the pitch angle and drives the displacement adjustment component to adjust the cage system to the target height includes: Obtaining the real-time measured value of the pitch angle; Generating a height compensation amount according to the product of the tangent value of the pitch angle and a preset proportionality coefficient; Superimposing the height compensation amount on the initial height to generate a final target height command.

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