Optical axis plumb calibration system

Abstract

The utility model provides an optical axis plumb calibration system, which comprises a support frame, a precise goniometer is arranged on the support frame, an object to be calibrated is arranged on a rotating arm in the precise goniometer, and the object to be calibrated is connected with the rotating arm through a quick assembly and disassembly mechanism; the device is further provided with a collimator, the collimator is arranged under the object to be calibrated, and the collimator is corrected through a theodolite with a tripod and used for providing a vertical calibration target. According to the optical axis plumb calibration system, through the innovative design and precise components, the efficient, accurate and safe calibration process is achieved, the plumb position of equipment can be accurately calibrated, identification tests and user trials prove that the optical axis plumb calibration system is economical and applicable, convenient to operate and high in efficiency, and the calibrated equipment works stably and reliably.

Description

Technical Field

[0001] The utility model relates to the field of photoelectric equipment calibration, and particularly relates to an optical axis vertical calibration system. Background Technique

[0002] With the development of optoelectronic technology, optoelectronic equipment has been widely used in various fields. The calibration of the initial position of the optical axis of optoelectronic equipment is an important basic work. Especially for equipment with specific position accuracy requirements, such as automatically returning to the vertical or horizontal position, it is necessary to calibrate the equipment at specific positions. There is no good method for calibrating the vertical position of the optical axis in the prior art.

[0003] The existing optical axis vertical calibration scheme similar to this method is as follows:

[0004] Adopt visual measurement technology, and combine an image acquisition module, an image processing system, an electric turntable, etc. to form a calibration instrument for optical axis calibration;

[0005] Adopt a combination method of a laser, a reflector, a prism, etc. for optical axis calibration.

[0006] The above calibration methods mainly have the following deficiencies:

[0007] 1) The first method requires the special development of algorithm software, has high requirements for calibration personnel, and requires the identification of the target. Therefore, the requirements for the camera are also high, and the accuracy is affected by multiple factors such as algorithms and turntable accuracy;

[0008] 2) For the second method, the instrument group requires professional personnel for calibration and maintenance. The processing of prisms and reflectors is difficult, the production cost is high, and the calibration accuracy of the instrument affects the calibration result;

[0009] 3) The above two calibration methods have poor versatility, are difficult to control the accuracy of the instrument itself, have high costs, have limited application ranges, and are not suitable for occasions with high-precision requirements. Content of the Utility Model

[0010] The main purpose of the utility model is to provide an optical axis vertical calibration system to solve the problems in the above background technique.

[0011] To solve the above technical problems, the technical solution adopted by the utility model is: it includes a support frame, a precision theodolite is arranged on the support frame, a calibrated object is arranged on the rotating arm in the precision theodolite, and the calibrated object is connected to the rotating arm through a quick disassembly and assembly mechanism;

[0012] A collimator is also provided, and the collimator is arranged directly below the calibrated object. The collimator is corrected by a theodolite with a tripod and is used to provide a vertical calibration target.

[0013] Preferably, a plurality of leveling screws are provided between the bottom of the precision goniometer and the support frame, and a plurality of mutually perpendicular levels are provided on the periphery of the precision goniometer for adjusting the level of the precision goniometer.

[0014] Preferably, the rotating arm rotates on one side of the precision goniometer. The precision goniometer is provided with a fine adjustment handwheel, a locking mechanism and a reading system. The fine adjustment handwheel is used to adjust the rotation of the rotating arm, the locking mechanism is used to adjust the locking of the rotation of the rotating arm, and the reading system is used to measure the rotation angle.

[0015] Preferably, the object to be calibrated includes an adjustment seat. The end of the adjustment seat is connected to the rotating arm through a quick installation and disassembly mechanism. A rotating frame is provided inside the adjustment seat. Both ends of the rotating frame are abutted against the adjustment seat through a rotating shaft and rotate. An inclination sensor and a camera are provided inside the rotating frame.

[0016] Preferably, both ends of the inclination sensor are connected to the rotating frame through spacer rings and bolts, and both ends of the camera are connected to the rotating frame through adjusting washers and bolts;

[0017] The angles of the inclination sensor and the camera are adjusted by adjusting the thickness of the spacer ring and the adjusting washer.

[0018] Preferably, the quick installation and disassembly mechanism includes a dovetail block and a dovetail seat. The dovetail block abuts and slides inside the dovetail seat. The dovetail seat is fixed on the rotating arm through a plurality of screws one and pins, and the dovetail block is fixed on the adjustment seat in the object to be calibrated through a plurality of screws two.

[0019] Preferably, a limit block is fixedly provided at one end of the dovetail seat, and the dovetail block abuts against the limit block;

[0020] A threaded hole is provided on one side of the dovetail seat. A locking screw is threadedly connected inside the threaded hole. A stop block is fixedly provided at the end of the threaded hole. A special-shaped groove is provided on the stop block to prevent the locking screw from falling off;

[0021] An arc-shaped groove is provided on one side of the dovetail block, and the end of the locking screw abuts inside the arc-shaped groove.

[0022] Preferably, a calibration system is further provided. The calibration system is used to read the angle value of the inclination sensor, calibrate the initial position, and correct the position angle value.

[0023] The present utility model provides an optical axis vertical calibration system, and the beneficial effects are as follows:

[0024] 1. The system has a simple configuration, flexible operation, high calibration accuracy, strong environmental adaptability, and can be used both indoors and outdoors. It can be widely applied to the rapid and accurate calibration of the vertical position of the optical axis of various optoelectronic instrument devices, ensure the rotation and reset accuracy within the set angle range, and can realize the position calibration in any direction.

[0025] 2. By changing the structure of the rotating arm, it can adapt to calibrated devices with different shapes, and is applicable to large, medium, small, and micro-optical and electrical devices, with good versatility.

[0026] 3. It has comprehensive functions and can also test parameter indicators such as the azimuth, pitch rotation accuracy, and field of view of the optoelectronic device.

[0027] 4. The connection and disassembly of the object to be calibrated and the calibration system are convenient, the positioning is accurate and reliable, and the work efficiency is high. After simple initial calibration of the system, it can be put into batch calibration work.

[0028] 5. It can accurately calibrate the vertical position of the device. Proven by appraisal tests and user trials, the utility model is economical and applicable, easy to operate, efficient, and the calibrated device works stably and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0030] Figure 1 is the front view of the overall structure of the present utility model;

[0031] Figure 2 is the front view of the connection between the object to be calibrated and the precision goniometer of the present utility model;

[0032] Figure 3 is the present utility model Figure 2 partial front sectional view;

[0033] Figure 4 is the present utility model Figure 3 partial view in the A direction in;

[0034] Figure 5 is the present utility model Figure 3 partial enlarged view of B in;

[0035] Figure 6 is the present utility model Figure 3 partial enlarged view of C in;

[0036] Figure 7 is the multi-directional structure view of the quick installation and disassembly mechanism of the present utility model;

[0037] Figure 8 is the installation schematic diagram of the collimator of the present utility model;

[0038] Figure 9 is the schematic diagram of step S6 of the present utility model;

[0039] Figure 10 is the schematic diagram of step S7 of the present utility model;

[0040] In the figure: precision theodolite 1; theodolite 2 with tripod; collimator 3; calibration system 4; quick installation and disassembly mechanism 5; support frame 6; rotating arm 7; reading system 8; stop mechanism 9; fine adjustment handwheel 10; leveling screw 11; level 12; dovetail seat 13; screw 1 14; pin 15; dovetail block 16; arc groove 1601; screw 2 17; limit block 18; locking screw 19; stop block 20; special-shaped groove 2001; object to be calibrated 21; adjusting seat 2101; rotating shaft 2102; rotating frame 2103; inclination sensor 2104; spacer 2105; camera 2106; adjusting washer 2107. Detailed implementation mode

[0041] Embodiment 1

[0042] As Figures 1 - 10 shown, an optical axis vertical calibration system includes a support frame 6, on which a precision theodolite 1 is provided. On the rotating arm 7 in the precision theodolite 1, an object to be calibrated 21 is provided, and the object to be calibrated 21 is connected to the rotating arm 7 through a quick installation and disassembly mechanism 5;

[0043] A collimator 3 is further provided. The collimator 3 is arranged directly below the object to be calibrated 21 and is corrected by a theodolite 2 with a tripod, and is used to provide a vertical calibration target. The object to be calibrated 21 can be quickly installed and positioned on the rotating arm 7 through the quick installation and disassembly mechanism 5. The precision theodolite 1 drives the rotating arm 7 to rotate, thereby driving the object to be calibrated 21 to rotate. The optical axis of the object to be calibrated 21 can also rotate independently. After the collimator 3 is calibrated by the theodolite 2 with a tripod, a vertical target can be provided, so as to calibrate the object to be calibrated 21.

[0044] The support frame 6 is a stable support for the entire system, ensuring that all components remain stable during operation. The precision theodolite 1 can accurately measure and control the angle of the rotating arm 7, thereby accurately adjusting the position of the object to be calibrated 21.

[0045] The rotating arm 7 connects the precision theodolite 1 and the object to be calibrated 21, allowing the object to be calibrated to rotate along a specified axis to achieve the purpose of vertical calibration. The object to be calibrated 21 is a device or component that needs to be calibrated for the verticality of the optical axis, and is connected to the rotating arm 7 through the quick installation and disassembly mechanism 5.

[0046] The quick installation and disassembly mechanism 5 can quickly and accurately install the object to be calibrated 21 on the rotating arm 7, reducing the setup time and potential human errors. The collimator 3 is located directly below the object to be calibrated 21, and its function is to emit a beam of parallel light as a reference standard in the vertical direction. The theodolite 2 with a tripod is used to calibrate the position of the collimator 3 to ensure that the emitted light is strictly vertical, providing an accurate target for the optical axis calibration.

[0047] This system achieves high-precision angle measurement and control through the precision goniometer 1 and the theodolite 2 with a tripod, while the collimator 3 provides a reliable plumb reference. The quick-disassembly mechanism 5 enhances the flexibility and efficiency of the system, making the replacement of the object to be calibrated 21 simple and fast. Such a design is suitable for application scenarios that require frequent plumb calibration of the optical axis.

[0048] Preferably, a plurality of leveling screws 11 are provided between the bottom of the precision goniometer 1 and the support frame 6, and a plurality of mutually perpendicular spirit levels 12 are provided on the periphery of the precision goniometer 1 for adjusting the level of the precision goniometer 1.

[0049] The leveling screws 11 are located at the bottom of the precision goniometer 1 and are in contact with the support frame 6. By adjusting the height of each leveling screw, the overall attitude of the precision goniometer 1 can be finely adjusted to achieve a perfect horizontal state. This is very important for applications that require high-precision measurement, because any inclination may cause measurement errors.

[0050] The spirit levels 12 are bubble spirit levels, which are installed on the periphery of the precision goniometer 1 and are arranged perpendicular to each other. The bubble in the spirit level indicates whether the device is in a horizontal state. When the bubble is in the center position, it means that the precision goniometer 1 has reached the horizontal, which is a prerequisite for accurate measurement.

[0051] In actual operation, the adjustment of the level of the precision goniometer 1 follows the following steps:

[0052] Coarse adjustment: First, use the leveling screws 11 to make a rough horizontal adjustment so that the precision goniometer 1 is roughly in a horizontal state.

[0053] Fine adjustment: Then, observe the position of the bubble in the spirit level 12. If the bubble is not in the center, finely adjust the corresponding leveling screw 11 until the spirit levels in all directions show that the device is completely horizontal.

[0054] Verification: After the adjustment is completed, check all the spirit levels 12 again to confirm that the bubbles are all in the center position to ensure that the precision goniometer 1 is in an absolutely horizontal state.

[0055] Preferably, the rotating arm 7 rotates on one side of the precision goniometer 1. The precision goniometer 1 is provided with a fine adjustment handwheel 10, a stop mechanism 9 and a reading system 8. The fine adjustment handwheel 10 is used to adjust the rotation of the rotating arm 7, the stop mechanism 9 is used to adjust the rotation locking of the rotating arm 7, and the reading system 8 is used to measure the rotation angle.

[0056] The fine adjustment handwheel 10 is a tool for finely adjusting the position of the rotating arm 7. Through a small rotation action, the fine adjustment handwheel 10 can accurately change the angle of the rotating arm 7, thereby realizing fine position adjustment of the object to be calibrated 21. The fine adjustment handwheel usually has a very high resolution to ensure high-precision adjustment.

[0057] The function of the stop mechanism 9 is to lock the rotating arm 7 at a specific angle to prevent angle changes caused by external forces during measurement or adjustment. Once the stop mechanism is activated, it can fix the position of the rotating arm 7 to ensure the stability of the measurement or adjustment process.

[0058] The reading system 8 is responsible for displaying the current rotation angle of the rotating arm 7. It can be a traditional dial and pointer or a modern digital display. The reading system must be very precise so that the operator can accurately read the angle of the rotating arm 7.

[0059] When using the precision goniometer 1 for optical axis vertical calibration, the operation process is as follows:

[0060] First, place the rotating arm 7 at approximately the desired angle by fine-tuning the handwheel 10.

[0061] Then, use the reading system 8 to accurately read the current angle and make fine adjustments as needed.

[0062] After reaching the expected angle, use the stop mechanism 9 to lock the rotating arm 7 to prevent it from moving.

[0063] Finally, confirm the final angle through the reading system 8 to complete the calibration process.

[0064] Preferably, the object to be calibrated 21 includes an adjustment base 2101. The end of the adjustment base 2101 is connected to the rotating arm 7 through a quick installation and disassembly mechanism 5. A rotating frame 2103 is provided inside the adjustment base 2101. Both ends of the rotating frame 2103 are abutted against the adjustment base 2101 through rotating shafts 2102 and rotate. An inclination sensor 2104 and a camera 2106 are provided inside the rotating frame 2103. The object to be calibrated 21 includes an optoelectronic device and an azimuth or pitch rotation mechanism. The optoelectronic device is the camera 2106. Both ends of the rotating frame 2103 are abutted against the adjustment base 2101 through rotating shafts 2102 and the rotating frame 2103 is driven to rotate inside the adjustment base 2101 through the rotation mechanism.

[0065] The adjustment base 2101 is the basic structure of the object to be calibrated 21. It is connected to the rotating arm 7 of the precision goniometer 1 through the quick installation and disassembly mechanism 5, so that the object to be calibrated 21 can be conveniently installed and removed.

[0066] The rotating frame 2103 is the internal frame that bears the optoelectronic device. It is connected to the adjustment base 2101 through the rotating shafts 2102 at both ends, allowing the rotating frame 2103 to rotate inside the adjustment base 2101, thereby adjusting the pointing of the camera. The rotating shafts 2102 provide the fulcrum for the rotation of the rotating frame 2103 and are also the key components for transmitting the rotating torque, ensuring the smooth rotation of the rotating frame 2103. The inclination sensor 2104 is used to monitor the inclination angle of the rotating frame 2103, which is particularly important during the vertical calibration of the optical axis because it can help determine whether the device is correctly aligned with the vertical direction.

[0067] The camera 2106 is the optoelectronic device to be calibrated, and its optical axis needs to be calibrated to the vertical direction. The camera 2106 is installed on the rotating frame 2103, and by adjusting the position of the rotating frame 2103, the optical axis direction of the camera 2106 can be adjusted. The rotating mechanism is a device that drives the rotating frame 2103 to rotate inside the adjustment base 2101, which is a motor or other mechanical drive component for precisely controlling the rotation angle of the rotating frame 2103.

[0068] Preferably, both ends of the inclination sensor 2104 are connected to the rotating frame 2103 through spacer rings 2105 and bolts, and both ends of the camera 2106 are connected to the rotating frame 2103 through adjusting washers 2107 and bolts;

[0069] By adjusting the thickness of the spacer rings 2105 and the adjusting washers 2107, the angles of the inclination sensor 2104 and the camera 2106 are adjusted.

[0070] By changing the thickness of the spacer rings 2105 and the adjusting washers 2107, the angles of the inclination sensor 2104 and the camera 2106 relative to the rotating frame 2103 can be adjusted very precisely. This is crucial for optoelectronic devices that require high-precision adjustment because even a tiny angular deviation may significantly affect the performance of the device. This design provides flexibility in adjustment, enabling the operator to make fine angular adjustments as needed without having to replace hardware or perform complex recalibration procedures.

[0071] Using the spacer rings 2105 and the adjusting washers 2107 to adjust the angle and fixing with bolts at the same time ensure the stability of the inclination sensor 2104 and the camera 2106 after adjustment, avoiding displacement caused by vibration or other external factors during use.

[0072] Steps of the angle adjustment process:

[0073] Initial installation: First, install the inclination sensor 2104 and the camera 2106 onto the rotating frame 2103, using the spacer rings 2105 and the adjusting washers 2107 with the initial thickness.

[0074] Preliminary test: Run the device, observe the readings of the inclination sensor 2104 and the images of the camera 2106, and determine whether angle adjustment is required.

[0075] Fine-tune the angle: According to the test results, appropriately increase or decrease the thickness of the spacer 2105 and the adjusting washer 2107 to achieve the required precise angle.

[0076] Final test and verification: After completing the angle adjustment, test the device performance again to ensure that the angles of the inclination sensor 2104 and the camera 2106 are accurate.

[0077] Preferably, the quick installation and disassembly mechanism 5 includes a dovetail block 16 and a dovetail seat 13. The dovetail block 16 slides against the inside of the dovetail seat 13. The dovetail seat 13 is fixed to the rotating arm 7 by a plurality of first screws 14 and pins 15. The dovetail block 16 is fixed to the adjusting seat 2101 in the object to be calibrated 21 by a plurality of second screws 17.

[0078] The mating design of the dovetail block 16 and the dovetail seat 13 enables the object to be calibrated 21 to be quickly installed on the rotating arm 7 and is also convenient for quick disassembly. This design reduces the equipment replacement time and improves work efficiency. The dovetail structure itself has good guiding and positioning properties, which can ensure that the position and direction of the object to be calibrated 21 remain consistent each time it is installed, which is very important for the calibration process that requires high repeat accuracy.

[0079] The dovetail seat 13 is fixed to the rotating arm 7 by a plurality of first screws 14 and pins 15, and the dovetail block 16 is fixed to the adjusting seat 2101 by a plurality of second screws 17. This multiple fixing method ensures the stability of the connection and can remain stable even when rotating or subject to external vibration.

[0080] The design of the dovetail block 16 and the dovetail seat 13 simplifies the equipment maintenance and adjustment process. When it is necessary to replace the object to be calibrated 21 or perform maintenance, the operator only needs to loosen the corresponding screws to easily disassemble. This installation and disassembly mechanism is flexible in design and can adapt to objects to be calibrated 21 of different sizes and shapes, only by correspondingly adjusting the sizes of the dovetail block 16 and the dovetail seat 13.

[0081] Preferably, a limiting block 18 is fixedly provided at one end of the dovetail seat 13, and the dovetail block 16 abuts against the limiting block 18;

[0082] A threaded hole is provided on one side of the dovetail seat 13. A locking screw 19 is threadedly connected in the threaded hole. A stop block 20 is fixedly provided at the end of the threaded hole. An irregular-shaped groove 2001 is provided on the stop block 20 to prevent the locking screw 19 from falling off;

[0083] An arc-shaped groove 1601 is provided on one side of the dovetail block 16, and the end of the locking screw 19 abuts against the arc-shaped groove 1601.

[0084] The limit block 18 is located at one end of the dovetail seat 13, which serves to limit the sliding distance of the dovetail block 16, ensuring that the object to be calibrated 21 will not exceed the necessary range when installed in place, and at the same time assisting in positioning. The locking screw 19 is connected to the dovetail seat 13 through a threaded hole, and its end is designed to abut against the arc-shaped groove 1601 in the dovetail block 16. The arc-shaped groove 1601 is located on one side of the dovetail block 16 and matches the end of the locking screw 19. When the locking screw 19 is tightened, it presses the dovetail block 16 and firmly fixes it in the dovetail seat 13 to prevent movement during operation.

[0085] The stop block 20 is fixed to the end of the threaded hole and has a special-shaped groove 2001. This design is to prevent the locking screw 19 from accidentally falling off during operation, providing additional safety. The design of the special-shaped groove 2001 can also prevent the tool from slipping when tightening or loosening the locking screw 19, increasing the reliability of the operation.

[0086] Preferably, a calibration system 4 is further provided. The calibration system 4 is used to read the angle value of the inclination sensor 2104, calibrate the initial position, and correct the position angle value.

[0087] The calibration system 4 communicates with the inclination sensor 2104 and receives the angle information output by the sensor. This information reflects the actual inclination angles of the rotating frame 2103 and the camera 2106 relative to the vertical direction. At the beginning of calibration, the calibration system 4 needs to determine a reference point or "zero point", which usually represents the position of the device in the vertical state. By comparing the actual angle readings with the theoretical values of the ideal vertical state, the calibration system 4 can calculate the initial deviation and store it as a reference value.

[0088] After calibrating the initial position, the calibration system 4 will correct all subsequent angle measurement values. This means that when the device deviates from the vertical state, the calibration system 4 will make adjustments based on the initial deviation to ensure that the measurement results reflect the true deviation relative to the vertical direction, rather than the relative deviation relative to the current state of the device. In addition to immediate correction, the calibration system 4 may also record angle measurement data for subsequent data analysis, device performance evaluation, or fault diagnosis.

[0089] Embodiment 2

[0090] Combined with Embodiment 1 for further illustration, a calibration method for an optical axis vertical calibration system is as follows:

[0091] S1. As Figure 8 shown, install the collimator 3 on the ground on one side of the support frame 6 and adjust the optical axis of the collimator 3 to be in the vertical position through the theodolite 2 with a tripod to provide a vertical calibration target.

[0092] S2. Install the precision theodolite 1 on the support frame 6, adjust the leveling screws 11 at the bottom, observe the bubbles of the two mutually perpendicular levels 12 to be centered, so that the precision theodolite 1 is horizontal, and rotate the rotating arm 7 to the vertical 0° initial position and then lock the rotating arm 7;

[0093] S3. Install the object to be calibrated 21 on the rotating arm 7 through the quick installation and disassembly mechanism 5 and lock it. Adjust the trimming washer 2107 so that the crosshair of the camera 2106 aims at the crosshair of the collimator 3, that is, the optical axis of the camera 2106 is parallel to the optical axis of the collimator 3 and is in the vertical position;

[0094] S4. Install the inclination sensor 2104, and read the value θ of the inclination sensor 2104 through the calibration system 4 1 , if the value is within -0.03° ≤ θ 1 ≤ +0.03°, then proceed to the next step; if it exceeds the range, trim the spacer 2105 until the value of the inclination sensor 2104 is within the range;

[0095] S5. Set the optical axis of the object to be calibrated 21 to be vertically zeroed through the calibration system 4;

[0096] S6. As Figure 9 shown, the rotating frame 2103 in the object to be calibrated 21 rotates 30° through the driving mechanism;

[0097] S7. As Figure 10 shown, operate the rotating arm 7 of the precision theodolite 1 to rotate, drive the optical axis of the object to be calibrated 21 to rotate about 30°, tighten the stop mechanism 9, and operate the fine adjustment handwheel 10 so that the crosshair of the camera 2106 aims at the crosshair of the collimator 3 again, and record the value θ of the inclination sensor 2104 2 , if θ 2 is within the range of 0° ± 0.01°, the calibration work is completed; if θ 2 exceeds the range, correct or replace the inclination sensor 2104, and then repeat steps S4~S7 until the requirements are met.

[0098] The above embodiments are only the preferred technical solutions of the present invention, and should not be regarded as a limitation to the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this range are also within the protection scope of the present invention.

Claims

1. An optical axis plumb calibration system, characterized by: The invention comprises a support frame (6), a precision goniometer (1) is arranged on the support frame (6), a calibrated object (21) is arranged on a rotating arm (7) in the precision goniometer (1), and the calibrated object (21) is connected to the rotating arm (7) via a quick assembly and disassembly mechanism (5); A collimator (3) is also provided. The collimator (3) is provided directly below the object to be calibrated (21). The collimator (3) is calibrated by a theodolite (2) with a tripod and is used to provide a plumb calibration target.

2. According to claim 1, an optical axis plumb calibration system is characterized by: A plurality of leveling screws (11) are provided between the bottom of the precision goniometer (1) and the support frame (6), and a plurality of mutually perpendicular levels (12) are provided around the precision goniometer (1) for adjusting the level of the precision goniometer (1).

3. According to claim 1, the optical axis plumb calibration system is characterized by: The rotating arm (7) is located at one side of the precision goniometer (1) and rotates. The precision goniometer (1) is provided with a fine-tuning hand wheel (10), a stop mechanism (9) and a reading system (8). The fine-tuning hand wheel (10) is used to adjust the rotation of the rotating arm (7), the stop mechanism (9) is used to adjust the rotation locking of the rotating arm (7), and the reading system (8) is used to measure the rotation angle.

4. According to claim 1, the optical axis plumb calibration system is characterized by: The object to be adjusted (21) comprises an adjustment seat (2101), the end of the adjustment seat (2101) is connected to a rotating arm (7) via a quick assembly and disassembly mechanism (5), a rotating frame (2103) is provided inside the adjustment seat (2101), both ends of the rotating frame (2103) are supported on the adjustment seat (2101) via a rotating shaft (2102) for rotation, and an inclination sensor (2104) and a camera (2106) are provided inside the rotating frame (2103).

5. According to claim 4, an optical axis plumb calibration system is characterized in that: The two ends of the inclination sensor (2104) are connected to the rotating frame (2103) through a spacer (2105) and a bolt, and the two ends of the camera (2106) are connected to the rotating frame (2103) through an adjustment washer (2107) and a bolt; The angles of the tilt sensor (2104) and the camera (2106) are adjusted by adjusting the thickness of the spacer (2105) and the adjustment washer (2107).

6. According to claim 1, the optical axis plumb calibration system is characterized by: The quick assembly and disassembly mechanism (5) comprises a dovetail block (16) and a dovetail seat (13), wherein the dovetail block (16) slides against the dovetail seat (13), the dovetail seat (13) is fixed to the rotating arm (7) by means of a plurality of first screws (14) and pins (15), and the dovetail block (16) is fixed to an adjustment seat (2101) in the object to be adjusted (21) by means of a plurality of second screws (17).

7. The optical axis plumb calibration system according to claim 6, characterized in that: A limit block (18) is fixedly provided at one end of the dovetail seat (13), and the dovetail block (16) abuts against the limit block (18); A threaded hole is provided on one side of the dovetail seat (13), a locking screw (19) connected by a thread is provided in the threaded hole, a stopper (20) is fixed at the end of the threaded hole, and a special-shaped groove (2001) is provided on the stopper (20) for preventing the locking screw (19) from falling off; An arc-shaped groove (1601) is provided on one side of the dovetail block (16), and the end of the locking screw (19) abuts against the arc-shaped groove (1601).

8. According to claim 4, an optical axis plumb calibration system is characterized by: A correction system (4) is also provided, and the correction system (4) is used to read the angle value of the inclination sensor (2104), calibrate the initial position, and correct the position angle value.

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