Adjusting mechanism and adjusting method for reference reflector of photoelectric tracker

Abstract

The invention discloses a photoelectric tracker reference reflector adjusting mechanism and an adjusting method. The adjusting mechanism comprises a fixed seat, an adjusting ring and a reflector seat, an inner concave spherical surface is arranged on the fixed seat, an outer convex spherical surface matched with the inner concave spherical surface is arranged on the adjusting ring, and the adjusting ring and the inner concave spherical surface of the fixed seat form a spherical pair through the outer convex spherical surface; a plurality of extension springs are arranged between the fixed seat and the adjusting ring, and the two ends of each extension spring are connected with the fixed seat and the adjusting ring respectively, so that the fixed seat and the adjusting ring tend to be close to each other; and a plurality of fine adjustment screws are arranged on the adjusting ring to adjust the inclination angle of the adjusting ring. According to the invention, the combination of the central spherical pair and the uniformly distributed springs is adopted, the vibration resistance is enhanced through the pretightening force of the springs while the precise adjustment of the two-dimensional inclination angle is realized, and the stability and environmental adaptability of the reference reflector can be improved.

Description

Technical Field

[0001] The invention relates to the field of precision optical instruments, and in particular to an adjustment mechanism and an adjustment method for a reference reflector of a photoelectric tracker. Background Art

[0002] In precision optical systems such as photoelectric trackers, precise adjustment of reflectors is the key to ensuring the alignment of the optical axis.

[0003] Currently, in the technology of reflector adjustment, the mechanism design based on the coordinated adjustment of multiple screws is widely used. For example, a structure of a central fulcrum combined with circumferentially evenly distributed adjustment screws is adopted. Support is provided by a central rigid fulcrum, and multiple screws are used to achieve fine adjustment of the two-dimensional inclination angle or normal direction of the reflector.

[0004] This type of solution usually changes the mirror posture by applying a preload by adjusting screws, but it has certain limitations. For example: Although two-dimensional tilt angle adjustment can be achieved by applying force directly with screws, the rigidity depends on the thread fit, which is affected by ship vibration, temperature fluctuations, etc., and is easy to loosen and cause structural deformation; and after adjustment, the position is maintained by the friction of the screws, which cannot effectively release the installation stress, and it is also difficult to control the preload. If the preload is too large, it will cause the mirror to deform, resulting in a decrease in the accuracy of the reflective mirror surface shape, affecting the optical performance, and it is difficult to take into account both high rigidity and stress release requirements. In addition, in application scenarios such as ships, it is necessary to use external equipment such as large-aperture long-focal-length collimator tubes for on-site calibration to achieve optical axis calibration. The operation is complicated and depends on the calibration environment, which makes deployment difficult.

[0005] Therefore, it is necessary to improve the reflector adjustment technology used in precision optical systems such as optoelectronic trackers to solve the problems of complex adjustment, large size, insufficient rigidity and poor environmental adaptability of traditional solutions.

[0006] Simplify the calibration process and improve the stability and environmental adaptability of the reference reflector. Summary of the invention

[0007] The present invention aims to solve one of the technical problems existing in the related art at least to a certain extent.

[0008] One object of the present invention is to provide an adjustment mechanism for a reference reflector of an optoelectronic tracker, which adopts a combination of a "central spherical pair + uniformly distributed springs" to achieve precise adjustment of the two-dimensional inclination angle while enhancing the vibration resistance through the spring preload, thereby improving the stability and environmental adaptability of the reference reflector.

[0009] Another object of the present invention is to provide a method for adjusting a reference reflector of an optoelectronic tracker, which omits the step of using a collimator on-site on a ship by pre-aligning the optical axis with the normal of the reflector in a laboratory, thereby simplifying the calibration process.

[0010] In order to achieve the above-mentioned object, the present invention provides, on one hand, a reference reflector adjustment mechanism for a photoelectric tracker, comprising: a fixing seat fixed on a rear cover of the photoelectric tracker, an adjustment ring mounted on the fixing seat, and a reflector seat fixed on the adjustment ring for mounting a plane reflector;

[0011] The fixing seat is provided with an inner concave spherical surface, the adjusting ring is seated on the fixing seat, and is provided with an outer convex spherical surface matching with the inner concave spherical surface, and the adjusting ring forms a spherical surface pair with the inner concave spherical surface of the fixing seat through the outer convex spherical surface;

[0012] A plurality of tension springs are arranged between the fixing seat and the adjusting ring, and the two ends of each tension spring are respectively connected to the fixing seat and the adjusting ring. The tension springs are in a tensioned state, so that the fixing seat and the adjusting ring tend to be close to each other;

[0013] The adjusting ring is provided with a plurality of fine-tuning screws, and the fine-tuning screws pass through the adjusting ring and are inserted into the fixing seat. The fine-tuning screws rotate to drive the adjusting ring to approach or move away from the fixing seat, thereby adjusting the inclination angle of the adjusting ring.

[0014] A further preferred technical solution of the present invention is that a spherical gasket is provided on the fine-tuning screw, a through hole is provided on the adjusting ring, and a threaded hole is provided on the fixing seat;

[0015] The spherical gasket is processed with a hemispherical surface, and its spherical radius is consistent with the countersunk surface radius of the through hole on the adjusting ring; each of the fine-tuning screws passes through the corresponding spherical gasket and the through hole on the outer circumference of the adjusting ring, and is threadedly connected with the threaded hole on the fixing seat; the fine-tuning screw contacts the adjusting ring through the spherical gasket to adjust the inclination angle of the adjusting ring.

[0016] Preferably, the plane reflector is fixed to the mounting hole in the center of the reflector seat by gluing;

[0017] The reflector seat is provided with a plurality of mounting through holes, and mounting screws pass through the plurality of mounting through holes to mount and fix the reflector seat on the adjusting ring.

[0018] Preferably, a plurality of arc-shaped through grooves are provided on the reflector seat between the plurality of mounting through holes for releasing mounting preload force and temperature stress.

[0019] Preferably, the fixing seat and the adjusting ring are both provided with cylindrical pins whose number matches the tension springs, and the hooks at both ends of each tension spring are respectively hooked on the corresponding cylindrical pins to be connected to the fixing seat and the adjusting ring.

[0020] Preferably, a circular groove is processed on the lower surface of the fixing seat, and a rubber sealing ring is installed in the groove.

[0021] Preferably, the adjustment mechanism further comprises a back cover, which is mounted on the fixing seat and has a circular groove processed on its lower surface, in which a rubber sealing ring is installed.

[0022] Another aspect of the present invention provides a method for adjusting a reference reflector of an optoelectronic tracker, comprising the following steps:

[0023] Step 1: In a laboratory environment, align the optical axis of the photoelectric tracker with the normal of the plane reflector of the above-mentioned adjustment mechanism through a large-aperture long-focal-length collimator;

[0024] Step 2: Lock the adjustment mechanism to complete the binding of the optical axis of the photoelectric tracker and the normal line of the plane reflector;

[0025] Step 3: Install the pre-calibrated optoelectronic tracker on the ship, and align the normal of the ship's reference mirror with the plane reflector to transfer the optical axis reference.

[0026] Preferably, in step 1, the optical axis of the photoelectric tracker is aligned with the normal of the plane reflector of the reference reflector adjustment mechanism of the photoelectric tracker through a large-aperture long-focal-length collimator, and the specific method is:

[0027] Arrange a large-aperture, long-focal-length collimator and an electronic theodolite on an optical vibration isolation platform, fix the optical collimator, and place a crosshair target plate on the target surface of the optical collimator; adjust the electronic theodolite so that the crosshairs emitted by the optical collimator are at the center of the electronic theodolite's field of view, and lock the azimuth axis and elevation axis of the electronic theodolite;

[0028] Then, place the photoelectric tracker between the optical collimator and the electronic theodolite, adjust the azimuth axis and elevation axis of the photoelectric tracker so that the crosshairs emitted by the optical collimator are at the center of the field of view of the optical camera, and lock the azimuth axis and elevation axis of the photoelectric tracker;

[0029] The electronic theodolite is set to emit a calibration laser crosshair, and the fine-tuning screw on the adjustment mechanism is adjusted to make the crosshairs emitted by the electronic theodolite self-collimated, that is, the crosshairs are at the center of the field of view of the electronic theodolite.

[0030] Preferably, a graded adjustment pre-tightening method is adopted when adjusting the three fine-tuning screws on the adjustment mechanism, specifically including:

[0031] In the coarse adjustment stage, adjust the fine-tuning screws that need to be adjusted to adjust the direction angle, tighten the remaining fine-tuning screws to apply preload force, preliminarily adjust the inclination angle of the plane reflector, and use the tension spring to provide reverse tension to compensate for the assembly gap;

[0032] During the fine-tuning stage, based on the optical axis calibration results, equal preload is applied to all fine-tuning screws to enhance the overall rigidity; at this time, excess preload is automatically released through the arc-shaped through slot on the reflector seat.

[0033] Beneficial effects: (1) The present invention uses the central spherical pair between the fixed seat and the adjustment ring as the main support point, provides the rotational freedom of the reflector around the X / Y axis, and at the same time constrains the displacement in the Z direction, simplifying the adjustment freedom; multiple tension springs are evenly distributed on the circumference of the reflector, and the pre-tightening force is used to achieve stable fit between the reflector and the support structure, thereby enhancing vibration resistance; multiple fine-tuning screws are distributed at intervals on the same circumference, and the inclination angle of the reflector is accurately controlled by the screw-in depth of the fine-tuning screws, thereby achieving two-dimensional adjustment in the normal direction; the fine-tuning screws apply adjustment force through the spherical gasket, which can adapt to the change in the inclination angle of the adjustment ring and eliminate stress concentration on the head of the fine-tuning screw. Through the mechanical coupling of the spherical pair and the spring, the adjustment sensitivity is guaranteed, and the stress concentration problem caused by direct pressure from traditional screws is avoided, thereby significantly improving the stability in a dynamic environment.

[0034] (2) The present invention provides symmetrically distributed arc-shaped through grooves on the reflector seat, and absorbs the local stress generated by the screw pre-tightening force through the flexible deformation of the groove body, while releasing the additional stress caused by temperature changes or vibrations, thereby avoiding the distortion of the reflector surface due to mechanical and thermal stress. Under the premise of ensuring the structural rigidity, the risk of mirror deformation caused by traditional rigid connection is eliminated, and the accuracy of the optical system is ensured.

[0035] (3) The present invention adopts a graded adjustment pre-tightening method when adjusting the three fine-tuning screws on the mechanism. In the coarse adjustment stage, the inclination angle of the reflector is initially adjusted by rotating the fine-tuning screws, and the spring provides reverse tension to compensate for the assembly gap; in the fine adjustment stage, based on the optical axis calibration result, an equal amount of pre-tightening force is applied to the fine-tuning screws to enhance the overall rigidity; the flexible arc-shaped through groove automatically releases excess pre-tightening force to ensure that the mirror surface is not affected by the additional bending moment. Through the graded pre-tightening force control method, both adjustment accuracy and long-term stability are taken into account.

[0036] (4) Use a collimator to pre-align the normal of the reflector with the optical axis of the photoelectric tracker in a stable environment and lock the adjustment mechanism. During on-site calibration on a ship, it is only necessary to align the normal of the ship's reference mirror with the reflector of this mechanism to complete the system optical axis transfer without the need to reuse the collimator. The complex optical axis calibration process is moved to the laboratory in advance, greatly simplifying the complexity of on-site installation and meeting the requirements for efficient deployment in harsh environments such as ships.

[0037] In summary, the advantage of the present invention is that through the coordinated design of the central spherical auxiliary support and the uniformly distributed springs and screws, the precise adjustment of the two-dimensional inclination angle of the reflector is achieved, and at the same time, the flexible stress unloading groove is used to effectively release the installation and temperature stress, thereby ensuring the accuracy of the mirror surface. In addition, the method of combining laboratory pre-calibration with on-site rapid calibration eliminates the cumbersome process of repeated debugging of parallel light tubes in traditional ship deployment, significantly improving the installation efficiency. The overall structure is compact, and through symmetrical layout and graded control of preload force, it ensures high rigidity while enhancing vibration resistance and environmental adaptability, which is particularly suitable for the needs of long-term stable operation of shipborne equipment under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is an exploded view of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0039] Figure 2 It is a cross-sectional view of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0040] Figure 3 It is a rear view of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention when the rear cover is removed.

[0041] Figure 4 The figure is a structural diagram of the fixing seat of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0042] Figure 5 This is a structural diagram of the adjustment ring of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0043] Figure 6 This is a structural diagram of the spherical gasket of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0044] Figure 7 The structure diagram of the reflector seat of the reference reflector adjustment mechanism of the photoelectric tracker of the present invention.

[0045] Figure 8 The present invention is a flow chart of the method for adjusting the reference reflector of the photoelectric tracker.

[0046] Fig. 9 This is an example diagram of the reference reflector adjustment method for an optoelectronic tracker of the present invention in the laboratory pre-calibration stage.

[0047] In the figure, 1-fixed seat, 2-adjusting ring, 3-tension spring, 4-cylindrical pin, 5-spherical gasket, 6-reflector seat, 7-plane reflector, 8-sealing ring, 9-back cover, 10-photoelectric tracker back cover, 101-concave spherical surface, 102-fixed seat through hole, 103-first threaded hole, 104-second threaded hole, 201-convex spherical surface, 202-adjusting ring through hole, 203-boss, 501-hemispherical surface, 502-spherical gasket through hole, 503-countersunk plane, 601-mounting hole, 602-arc-shaped through groove, 603-reflector seat through hole. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments, and they should not be understood as limitations on the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the description of the present invention, it should be understood that the terms used are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] Combine the following Figure 1-Figure 9 The invention describes the reference reflector adjustment mechanism and adjustment method of the photoelectric tracker provided by the invention.

[0050] Embodiment 1: This embodiment provides an adjustment mechanism for a reference reflector of an optoelectronic tracker. The adjustment mechanism is small in size and light in weight, and can improve the stability and environmental adaptability of the reference reflector.

[0051] like Figure 1-Figure 3 As shown, the adjustment mechanism includes: a fixing seat 1, an adjustment ring 2, three tension springs 3, six cylindrical pins 4, three spherical gaskets 5, a reflector seat 6, a plane reflector 7, two sealing rings 8, a rear cover 9, and a photoelectric tracker rear cover 10. Among them:

[0052] Fixed seat 1: Figure 4 As shown, the fixing seat 1 is provided with an inner concave spherical surface 101, which is used to cooperate with the outer convex spherical surface 201 of the adjustment ring 2 to form a spherical pair. The outer circumferential flange of the fixing seat 1 is fixed to the rear cover 10 of the photoelectric tracker through four fixing seat through holes 102. The fixing seat 1 is also provided with four first threaded holes 103 for installing the rear cover 9. On the inner ring of the fixing seat 1, three second threaded holes 104 evenly spaced at 120° are provided for installing fine-tuning screws.

[0053] Adjustment ring 2: Figure 5As shown, the adjusting ring 2 is mounted on the fixing seat 1, and is provided with an outer convex spherical surface 201, which is tightly matched with the inner concave spherical surface 101 of the fixing seat 1. Three adjusting ring through holes 202 are provided on the flange of the adjusting ring 2, and the countersunk parts of the adjusting ring through holes 202 are processed into concave spherical surfaces for matching with the spherical gasket 5. Three bosses 203 are provided on the inner ring of the adjusting ring 2, and each boss is processed with a threaded hole for mounting the reflector seat 6.

[0054] Tension spring 3: Three tension springs 3 are evenly distributed along the circumference, and both ends of each tension spring 3 are connected to the fixing seat 1 and the adjusting ring 2 through a cylindrical pin 4. The tension spring 3 is in a stretched state, so that the fixing seat 1 and the adjusting ring 2 tend to be close to each other, providing a preload force.

[0055] Cylindrical pins 4: Six cylindrical pins 4 are used to fix the two ends of the tension spring 3 on the fixing seat 1 and the adjusting ring 2 respectively.

[0056] Spherical gasket 5: Three spherical gaskets 5 are respectively installed in the adjustment ring through hole 202 of the adjustment ring 2. Figure 6 As shown, the hemispherical surface 501 of the spherical gasket 5 matches with the adjustment ring through hole 202, the spherical gasket through hole 502 of the spherical gasket 5 is used to pass the fine-tuning screw, and the countersunk plane 503 of the spherical gasket 5 fits with the lower surface of the fine-tuning screw head.

[0057] Reflector seat 6: Figure 7 As shown, the reflector seat 6 is provided with a mounting hole 601 for mounting the plane reflector 7. The reflector seat 6 is also provided with three arc-shaped through grooves 602, and three reflector seat through holes 603 are provided at the ends of the grooves for mounting and fixing the reflector seat 6 on the adjustment ring 2. The arc-shaped through grooves 602 are used to release the installation preload and temperature stress.

[0058] Plane reflector 7: The plane reflector 7 is fixed in the mounting hole 601 of the reflector seat 6 by gluing.

[0059] Sealing ring 8: Two sealing rings 8 are respectively installed in the circular groove on the lower surface of the fixing seat 1 and the circular groove on the lower surface of the rear cover 9 to achieve sealing between the adjustment mechanism and the photoelectric tracker.

[0060] Back cover 9: The back cover 9 is installed on the fixing seat 1 to protect the internal structure of the adjustment mechanism. The back cover and the sealing ring are set to seal and isolate the adjustment mechanism from the external environment, effectively reducing or even eliminating the corrosion of water vapor, salt fog and mold in the environment on the optical instrument, and improving the environmental adaptability of the device, especially for the harsh environment of high salt fog and water vapor at sea.

[0061] The specific assembly method of each part of the adjustment mechanism is as follows:

[0062] The adjusting ring 2 is installed on the fixing seat 1. The outer convex spherical surface of the adjusting ring 2 is tightly matched with the inner concave spherical surface of the fixing seat 1. The central spherical surface pair between the fixing seat 1 and the adjusting ring 2 serves as the main supporting point, providing the rotational freedom of the reflector around the X / Y axis, while constraining the Z-direction displacement and simplifying the adjustment freedom. Three tension springs 3 are evenly distributed on the circumference of the fixing seat 1 and the adjusting ring 2. The hooks at both ends of the tension spring 3 are respectively installed in the grooves on the fixing seat 1 and the adjusting ring 2 through cylindrical pins 4. The stable fit between the fixing seat 1 and the adjusting ring 2 is achieved through the tension preload. To enhance vibration resistance, a gap is left between the flange around the adjusting ring 2 and the fixing seat 1, and the upper and lower surfaces of the gap are parallel; three fine-tuning screws are arranged at the same circumferential intervals, and each fine-tuning screw passes through the spherical gasket 5 and the spherical through hole on the outer circumference of the adjusting ring 2 to be connected with the corresponding thread on the fixing seat 1. The inclination angle of the adjusting ring 2 can be accurately controlled by the screw-in depth of the fine-tuning screw, so as to realize two-dimensional adjustment of the normal direction of the plane reflector 7; the fine-tuning screw applies adjustment force through the spherical gasket 5, which can adapt to the change of the inclination angle of the adjusting ring 1 and eliminate the stress concentration on the head of the fine-tuning screw.

[0063] The plane reflector 7 is fixed in the inner hole of the reflector seat 6 by gluing. Three symmetrically distributed arc-shaped through grooves are arranged on the reflector seat 6. Three through holes are arranged at the end of the groove. The groove body is located between the screw mounting hole and the reflector mounting hole. The reflector seat 6 is fixed on the adjustment ring 2 through these three holes. The local stress generated by the screw pre-tightening force is absorbed by the flexible deformation of the groove body, and the additional stress caused by temperature change or vibration is released at the same time, so as to avoid the distortion of the reflector surface due to mechanical and thermal stress. Under the premise of ensuring the structural rigidity, the risk of mirror deformation caused by traditional rigid connection is eliminated to ensure the accuracy of the optical system.

[0064] The adjustment mechanism of this embodiment achieves the following effects:

[0065] (1) Improved adjustment stability: The combination of "central spherical pair + three evenly distributed springs" is adopted to achieve precise two-dimensional inclination adjustment while enhancing vibration resistance through spring preload;

[0066] (2) Stress control optimization: Design a flexible stress unloading groove in the reflector seat to offset installation and temperature stress and prevent surface distortion;

[0067] (3) Compact structure: The adjustment screws and preload springs are evenly distributed, combined with a central stress relief mirror mount, to reduce the volume and improve environmental adaptability, meeting the stringent working conditions of shipborne equipment.

[0068] Embodiment 2: This embodiment provides a method for adjusting a reference reflector of an optoelectronic tracker, such as Figure 8 As shown, it is divided into two stages and four steps.

[0069] The first stage is laboratory pre-calibration. The specific steps are:

[0070] Step 1: In a laboratory environment, align the optical axis of the photoelectric tracker with the normal of the reference reflector through a large-aperture, long-focal-length collimator.

[0071] The specific steps are as follows:

[0072] like Fig. 9 As shown, a large-aperture and long-focal-length (focal-length greater than three times the focal-length of the optical camera of the photoelectric tracker) optical collimator and an electronic theodolite are arranged on an optical vibration isolation platform, the optical collimator is fixed, and a crosshair target plate is placed on its target surface.

[0073] Adjust the electronic theodolite so that the crosshairs emitted by the optical parallel light tube are in the center of the electronic theodolite's field of view, and lock the azimuth and elevation axes of the electronic theodolite.

[0074] Place the photoelectric tracker between the optical collimator and the electronic theodolite, adjust the azimuth and elevation axes of the photoelectric tracker so that the crosshairs emitted by the optical collimator are at the center of the field of view of the optical camera, and lock the azimuth and elevation axes of the photoelectric tracker.

[0075] Set the electronic theodolite to emit a calibration laser crosshair, and use the graded adjustment pre-tightening method to adjust the three fine-tuning screws on the reference reflector so that the crosshairs emitted by the electronic theodolite are self-collimated, that is, the crosshair image is in the center of the electronic theodolite's field of view. The graded adjustment pre-tightening method specifically includes:

[0076] In the coarse adjustment stage, adjust the fine-tuning screws that need to be adjusted to adjust the direction angle, tighten the remaining fine-tuning screws to apply preload force, preliminarily adjust the inclination angle of the plane reflector, and use the tension spring to provide reverse tension to compensate for the assembly gap;

[0077] During the fine-tuning stage, based on the optical axis calibration results, equal preload is applied to all fine-tuning screws to enhance the overall rigidity; at this time, excess preload is automatically released through the arc-shaped through slot on the reflector seat.

[0078] Step 2: Lock the adjustment mechanism to complete the binding of the optical axis of the photoelectric tracker and the normal of the reference reflector.

[0079] The second stage is on-site rapid calibration. The specific steps are:

[0080] Step 3: Install the pre-calibrated electro-optical tracker on the ship.

[0081] Step 4: Align the normal of the ship's reference mirror with the plane reflector of the adjustment mechanism to transfer the optical axis reference without using a collimator.

[0082] This embodiment uses a method that combines laboratory pre-calibration with on-site rapid calibration, eliminating the cumbersome process of repeated debugging of collimators in traditional ship deployment, significantly improving installation efficiency, and achieving high-precision, high-reliability rapid calibration and stable maintenance of reflectors.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reference reflector adjustment mechanism for an optoelectronic tracker, characterized in that: include: A fixing seat fixed on the rear cover of the photoelectric tracker, an adjusting ring installed on the fixing seat, and a reflector seat fixed on the adjusting ring for installing a plane reflector; The fixing seat is provided with an inner concave spherical surface, the adjusting ring is seated on the fixing seat, and is provided with an outer convex spherical surface matching with the inner concave spherical surface, and the adjusting ring forms a spherical surface pair with the inner concave spherical surface of the fixing seat through the outer convex spherical surface; A plurality of tension springs are arranged between the fixing seat and the adjusting ring, and the two ends of each tension spring are respectively connected to the fixing seat and the adjusting ring. The tension springs are in a tensioned state, so that the fixing seat and the adjusting ring tend to be close to each other; The adjusting ring is provided with a plurality of fine-tuning screws, and the fine-tuning screws pass through the adjusting ring and are inserted into the fixing seat. The fine-tuning screws rotate to drive the adjusting ring to approach or move away from the fixing seat, thereby adjusting the inclination angle of the adjusting ring.

2. The reference reflector adjustment mechanism for an optoelectronic tracker according to claim 1, characterized in that: A spherical gasket is provided on the fine-tuning screw, a through hole is provided on the adjusting ring, and a threaded hole is provided on the fixing seat; The spherical gasket is processed with a hemispherical surface, and its spherical radius is consistent with the countersunk surface radius of the through hole on the adjusting ring; each of the fine-tuning screws passes through the corresponding spherical gasket and the through hole on the outer circumference of the adjusting ring, and is threadedly connected with the threaded hole on the fixing seat; the fine-tuning screw contacts the adjusting ring through the spherical gasket to adjust the inclination angle of the adjusting ring.

3. The reference reflector adjustment mechanism of the photoelectric tracker according to claim 1, characterized in that: The plane reflector is fixed in the mounting hole at the center of the reflector seat by gluing; The reflector seat is provided with a plurality of mounting through holes, and mounting screws pass through the plurality of mounting through holes to mount and fix the reflector seat on the adjusting ring.

4. The reference reflector adjustment mechanism for an optoelectronic tracker according to claim 3, characterized in that: A plurality of arc-shaped through grooves are provided on the reflector seat between the plurality of mounting through holes, for releasing mounting preload force and temperature stress.

5. The reference reflector adjustment mechanism for an optoelectronic tracker according to claim 1, characterized in that: The fixing seat and the adjusting ring are both provided with cylindrical pins whose number matches the tension springs. The hooks at both ends of each tension spring are respectively hooked on the corresponding cylindrical pins and connected with the fixing seat and the adjusting ring.

6. The reference reflector adjustment mechanism for an optoelectronic tracker according to claim 1, characterized in that: A circular groove is processed on the lower surface of the fixing seat, and a rubber sealing ring is installed in the groove.

7. The reference reflector adjustment mechanism for an optoelectronic tracker according to claim 1, characterized in that: It also includes a back cover, which is installed on the fixing seat, and a circular groove is processed on the lower surface of the back cover, and a rubber sealing ring is installed in the groove.

8. A method for adjusting a reference reflector of an optoelectronic tracker, characterized in that: The following steps are involved: Step 1: In a laboratory environment, align the optical axis of the photoelectric tracker with the normal of the plane reflector of the adjustment mechanism described in any one of claims 1 to 7 through a large-aperture long-focal-length collimator; Step 2: Lock the adjustment mechanism to complete the binding of the optical axis of the photoelectric tracker and the normal line of the plane reflector; Step 3: Install the pre-calibrated optoelectronic tracker on the ship, and align the normal of the ship's reference mirror with the plane reflector to transfer the optical axis reference.

9. The method for adjusting the reference reflector of an optoelectronic tracker according to claim 8, characterized in that: The specific method of step one is: Arrange a large-aperture, long-focal-length collimator and an electronic theodolite on an optical vibration isolation platform, fix the optical collimator, and place a crosshair target plate on the target surface of the optical collimator; adjust the electronic theodolite so that the crosshairs emitted by the optical collimator are at the center of the electronic theodolite's field of view, and lock the azimuth axis and elevation axis of the electronic theodolite; Then, place the photoelectric tracker between the optical collimator and the electronic theodolite, adjust the azimuth axis and elevation axis of the photoelectric tracker so that the crosshairs emitted by the optical collimator are at the center of the field of view of the optical camera, and lock the azimuth axis and elevation axis of the photoelectric tracker; The electronic theodolite is set to emit a calibration laser crosshair, and the fine-tuning screw on the adjustment mechanism is adjusted to make the crosshairs emitted by the electronic theodolite self-collimated, that is, the crosshairs are at the center of the field of view of the electronic theodolite.

10. The method for adjusting the reference reflector of an optoelectronic tracker according to claim 9, characterized in that: When adjusting the three fine-tuning screws on the adjustment mechanism, a graded adjustment pre-tightening method is adopted, which specifically includes: In the coarse adjustment stage, adjust the fine-tuning screws that need to be adjusted to adjust the direction angle, tighten the remaining fine-tuning screws to apply preload force, preliminarily adjust the inclination angle of the plane reflector, and use the tension spring to provide reverse tension to compensate for the assembly gap; In the fine-tuning stage, based on the optical axis calibration results, equal preload is applied to all fine-tuning screws to enhance the overall stiffness; At this time, the excess preload force is automatically released through the arc-shaped through groove on the reflector seat.

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