Mirror curvature correction device and assembly method thereof

Abstract

The present application relates to a mirror curvature correction device and its assembling method, the mirror curvature correction device comprises a center adapter and at least three sets of adjusting components, the center adapter is arranged on the back of the mirror, and the central axis of the center adapter coincides with the optical axis of the mirror. At least three sets of adjusting components are arranged on the back of the mirror, and one set of adjusting components comprises two adjusting components symmetrically arranged with the optical axis of the mirror as the symmetry axis. The adjusting component comprises an adjusting rod, a heating element and an outer edge adapter. The outer edge adapter is arranged on the back of the mirror and close to the outer edge of the mirror. The first end of at least six adjusting rods is hingedly connected to the center adapter, and the second end of the adjusting rod is hingedly connected to the outer edge adapter. The heating element is arranged on the side wall of the adjusting rod, which is used for heating and deforming the adjusting rod to apply the axial force of the adjusting rod to the mirror through the center adapter and the outer edge adapter. The structure of the mirror curvature correction device is simpler.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of space remote sensing, and particularly relates to a mirror surface curvature correction device of a mirror and an assembling method thereof. BACKGROUND

[0002] High resolution and large aperture have become the main development trend of space telescopes. In order to reduce the launch cost and support difficulty of the mirror in the space telescope, a spliced mirror composed of multiple mirrors is gradually popularized and used. However, under the comprehensive influence of factors such as gravity, temperature and assembly error of the mirror component, the mirror is often deformed, so that the radius of curvature of the mirror surface of the mirror changes, and it is difficult to meet the splicing requirements of the mirror component.

[0003] For the curvature correction of the mirror, the current main method is to apply a correction force to the mirror by a driving device, so as to realize the curvature correction of the mirror surface of the mirror. However, the overall structure of this method is complex, the reliability is poor, and the weight is heavy, which increases the launch cost of the space telescope. SUMMARY

[0004] Therefore, the present application aims to provide a mirror surface curvature correction device of a mirror and an assembling method thereof, which can simplify the structure of the mirror surface curvature correction device of the mirror, reduce the weight, and make the mirror surface curvature correction device of the mirror more stable and reliable in the correction process while ensuring the realization of the curvature correction of the mirror.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A mirror surface curvature correction device of a mirror, comprising:

[0007] a center adapter arranged at the back of the mirror, and the central axis of the center adapter coincides with the optical axis of the mirror;

[0008] at least three groups of adjusting components arranged at the back of the mirror, one group of adjusting components comprising two adjusting components symmetrically arranged with the optical axis of the mirror as the symmetry axis; the adjusting component comprising an adjusting rod, a heating element and an outer edge adapter; the outer edge adapter is arranged at the back of the mirror and close to the outer edge of the mirror; the first ends of at least six adjusting rods are hingedly connected to the center adapter, and the second ends of the adjusting rods are hingedly connected to the outer edge adapter;

[0009] the heating element is arranged on the side wall of the adjusting rod, for heating and deforming the adjusting rod, so as to apply the axial force of the adjusting rod to the mirror through the center adapter and the outer edge adapter.

[0010] Further, the height of the first end of the adjusting rod is higher than the height of the second end of the adjusting rod.

[0011] Further, the controller is further configured to obtain the axial force of the adjusting rod collected by the force sensor, and adjust the output temperature of the heating element according to the collected axial force of the adjusting rod.

[0012] The controller is configured to obtain the axial force of the adjusting rod collected by the force sensor, and adjust the output temperature of the heating element according to the collected axial force of the adjusting rod.

[0013] Further, the central adapter includes a plurality of accommodating cavities, and the plurality of accommodating cavities are uniformly and spacedly arranged along the circumference of the central adapter; the first end of the adjusting rod is a spherical end, and the first end of the adjusting rod is rotatably limited in the accommodating cavity.

[0014] Further, the back of the reflector is provided with a central mounting hole; the central adapter includes a central fixed end and a connecting end cover, the central fixed end is bonded in the central mounting hole, and the connecting end cover is detachably mounted on the upper surface of the central fixed end; the lower surface of the connecting end cover is provided with a first sub-accommodating cavity, and the upper surface of the central fixed end is provided with a second sub-accommodating cavity; the connecting end cover is mounted on the upper surface of the central fixed end, so that the first sub-accommodating cavity and the second sub-accommodating cavity are combined to form the accommodating cavity.

[0015] Further, the outer edge adapter includes a mounting cavity; the second end of the adjusting rod is a spherical end, and the second end of the adjusting rod is rotatably limited in the mounting cavity.

[0016] Further, the back of the reflector is provided with a plurality of outer edge mounting holes, the plurality of outer edge mounting holes are uniformly and spacedly arranged along the circumference of the reflector and arranged close to the outer edge of the reflector; the outer edge adapter includes an outer edge fixed end and a mounting end cover, the outer edge fixed end is bonded in the outer edge mounting hole, and the mounting end cover is detachably mounted on the upper surface of the outer edge fixed end; the lower surface of the mounting end cover is provided with a first sub-mounting cavity, and the upper surface of the outer edge fixed end is provided with a second sub-mounting cavity; the mounting end cover is mounted on the upper surface of the outer edge fixed end, so that the first sub-mounting cavity and the second sub-mounting cavity are combined to form the mounting cavity.

[0017] Further, at least six adjusting components are uniformly and spacedly arranged along the circumference of the central adapter.

[0018] Further, the adjusting rod is made of a heat-sensitive material; and / or

[0019] The adjusting rod is a hollow rod.

[0020] A method for assembling a mirror curvature correction device for a reflector is provided. The method is used for assembling the mirror curvature correction device for a reflector. The mirror curvature correction device for a reflector includes a central adapter and at least three groups of adjustment components. One group of adjustment components includes two adjustment components symmetrically arranged with the optical axis of the reflector as the symmetry axis. The adjustment components include an adjustment rod, a heating element, an outer edge adapter, and a force sensor. The back of the reflector is provided with a central mounting hole and multiple outer edge mounting holes. The multiple outer edge mounting holes are evenly spaced along the circumference of the reflector and arranged close to the outer edge of the reflector. The assembly method includes:

[0021] S1: Glue the center adapter to the center mounting hole;

[0022] S2: Glue the outer edge adapter to the outer edge mounting hole;

[0023] S3: Install the force sensor on the adjusting rod along the axial direction of the adjusting rod, and bond the heating element to the side wall of the adjusting rod;

[0024] S4: hinge the first end of the adjusting rod to the central adapter, and hinge the second end of the adjusting rod to the outer edge adapter.

[0025] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0026] The present invention provides a mirror curvature correction device for a reflector, which can utilize a heating element to heat an adjustment rod. Since both ends of the adjustment rod are constrained by a central adapter and an outer edge adapter, the extension of the adjustment rod is limited, so that the axial force of the adjustment rod extended by heat acts on the reflector through the central adapter and the outer edge adapter, so that a correction force is applied to the reflector, thereby changing the mirror curvature of the reflector. This can effectively achieve correction of the mirror curvature of the reflector, thereby achieving correction of the mirror curvature of the reflector assembly to meet the splicing requirements of the reflector assembly. The overall structure of the mirror curvature correction device for the reflector is simple, making it more stable and reliable during the correction process. The adjustment rod can apply the correction force to the reflector only through the heating element, without the need for an actuator, and is light in weight, thereby reducing the launch cost. In this way, while ensuring the correction of the mirror curvature of the reflector, the structure of the mirror curvature correction device for the reflector can be simplified, making the mirror curvature correction device for the reflector more stable and reliable during the correction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A three-dimensional schematic diagram of a mirror curvature correction device for a reflector according to an embodiment of the present invention;

[0029] Figure 2 Top view of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention;

[0030] Figure 3 Exploded view of the center adapter and the adjusting component of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention;

[0031] Figure 4 Exploded view of the center adapter of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention;

[0032] Figure 5 Top view of the center adapter of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention;

[0033] Figure 6 Perspective view of the partial adjusting component of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention;

[0034] Figure 7 Flow chart of the assembling method of the mirror surface curvature correction device of the reflecting mirror according to the embodiment of the present invention.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 10, mirror surface curvature correction device of the reflecting mirror; 11, reflecting mirror; 12, center adapter; 13, adjusting component; 14, adjusting rod; 15, heating element; 16, outer edge adapter; 17, force sensor; 18, containing cavity; 19, center mounting hole; 20, center fixed end; 21, connecting end cover; 22, first sub-containing cavity; 23, second sub-containing cavity; 24, connecting element; 25, mounting cavity; 26, outer edge fixed end; 27, mounting end cover; 28, first sub-mounting cavity; 29, second sub-mounting cavity; 30, outer edge mounting hole. DETAILED DESCRIPTION

[0037] For the purpose of making the object, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and do not constitute a limitation on the present application. In different embodiments, similar elements are associated with similar element labels. In the following embodiments, many details are described in order to make the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary for those skilled in the art to describe these related operations in detail according to the description in the specification and general technical knowledge in the art.

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other to form various embodiments without conflict. At the same time, each step or action in the method description can also be sequentially adjusted or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment, and do not mean a necessary sequence, unless otherwise stated that a certain sequence must be followed.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0040] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connected", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0042] Referring to Figure 1 and Figure 2 It is shown that the embodiment of the present application provides a mirror surface curvature correction device 10 of a mirror, which can be applied to mirror surface curvature correction of a space-based large-aperture mirror assembly. The mosaic mirror is composed of a plurality of mirrors 11, and the confocal relationship between the plurality of mirrors 11 can be achieved by correcting the mirror surface curvature of the mirrors 11. The mirror surface curvature correction device 10 of the mirror includes a central adapter 12 and at least three sets of adjusting components 13.

[0043] The central adapter 12 is arranged on the back of the mirror 11, and the central axis of the central adapter 12 coincides with the optical axis of the mirror 11. The central adapter 12 can be bonded to the back of the mirror 11.

[0044] The at least three sets of adjusting components 13 are arranged on the back of the mirror 11. One set of adjusting components 13 includes two adjusting components 13 symmetrically arranged with the optical axis of the mirror 11 as the symmetry axis, i.e., the mirror surface curvature correction device 10 of the mirror includes at least six adjusting components 13. In one embodiment, the at least six adjusting components 13 are arranged in uniform intervals along the circumference of the central adapter 12. The adjusting component 13 includes an adjusting rod 14, a heating element 15 and an outer edge adapter 16. In one embodiment, the adjusting rod 14 is made of a heat-sensitive material. The material of the adjusting rod 14 can be titanium alloy, so that the adjusting rod 14 can be deformed by heat. In one embodiment, the adjusting rod 14 is a hollow rod, so that the adjusting rod 14 is easy to deform by heat. The shape of the adjusting rod 14 can be columnar. In this embodiment, the mirror surface curvature correction device 10 of the mirror includes three sets of adjusting components 13, i.e., six adjusting components 13, so that the number of the adjusting rod 14, the heating element 15 and the outer edge adapter 16 is six. The six adjusting rods 14 are arranged in uniform intervals along the circumference of the central adapter 12. The outer edge adapter 16 is arranged on the back of the mirror 11 and close to the outer edge of the mirror 11. The outer edge adapter 16 can be bonded to the back of the mirror 11.

[0045] Since the adjustment component 13 includes an adjustment rod 14, at least six adjustment components 13 include at least six adjustment rods 14. The first ends of the at least six adjustment rods 13 are hinged to the central adapter 12, and the second ends of the adjustment rods 13 are hinged to the outer edge adapter 16. The first ends of at least three groups of adjustment rods 14 are hinged to the central adapter 12, and the second ends of each adjustment rod 14 in the at least three groups of adjustment rods 14 are hinged to the corresponding outer edge adapter 16. In this way, the freedom of movement of the two ends of the adjustment rods 14 can be constrained by the central adapter 12 and the outer edge adapter 16, while the freedom of rotation of the two ends of the adjustment rods 14 can be released. In one embodiment, the height of the first end of the adjustment rod 14 is higher than the height of the second end of the adjustment rod 14.

[0046] The heating element 15 is arranged on the side wall of the adjusting rod 14, wherein the heating element 15 can be in the form of a sheet and can be bonded to the side wall of the adjusting rod 14. In this embodiment, the heating element 15 is bonded to the side wall of the adjusting rod 14 by GD414 anti-loosening glue. The number of heating elements 15 can be one, which surrounds and covers the side wall of the adjusting rod 14. The number of heating elements 15 can also be multiple, and multiple heating elements 15 are evenly spaced and arranged on the side wall of the adjusting rod 14 along the circumference of the adjusting rod 14. The heating element 15 is used to heat and deform the adjusting rod 14 so that the axial force of the adjusting rod 14 acts on the reflector 11 through the center adapter 12 and the outer edge adapter 16. When the heating element 15 is not working, the length of the adjusting rod 14 remains unchanged, and the reflector 11, the center adapter 12, the outer edge adapter 16 and the adjusting rod 14 are maintained in the original stress state. When the heating element 15 is working, the extension of the adjustment rod 14 due to heat is limited, so that a correction force can be applied to the reflector 11 through the central adapter 12 and the outer edge adapter 16 to adjust the curvature of the reflector 11. The heating element 15 can be used to heat the adjustment rod 14. Since both ends of the adjustment rod 14 are constrained by the central adapter 12 and the outer edge adapter 16, the extension of the adjustment rod 14 due to heat is limited, so that the axial force of the adjustment rod 14 due to the extension of the heat acts on the reflector 11 through the central adapter 12 and the outer edge adapter 16, so that a correction force is applied to the reflector 11, thereby changing the curvature of the reflector 11. The correction of the curvature of the reflector 11 can be effectively achieved to meet the splicing requirements of the reflector assembly. The overall structure of the reflector surface curvature correction device 10 is simple, making the correction process more stable and reliable. The adjustment rod 14 applies the correction force to the reflector 11 solely through the heating element 15, eliminating the need for an actuator and resulting in a lighter weight, thereby reducing launch costs. This simplifies the structure and reduces the weight of the reflector surface curvature correction device 10 while ensuring that the reflector 11 surface curvature is corrected, making the reflector surface curvature correction device 10 more stable and reliable during the correction process.

[0047] In one embodiment, the mirror surface curvature correction device 10 of the mirror further comprises a controller (not shown in the figure). The adjusting component 13 further comprises a force sensor 17 arranged on the adjusting rod 14 for detecting the axial force of the adjusting rod 14, so as to determine the correction force applied by the adjusting rod 14 to the mirror 11. The force sensor 17 can be arranged on the adjusting rod 14 along the axial direction of the adjusting rod 14. The controller is configured to acquire the axial force of the adjusting rod 14 collected by the force sensor 17, and adjust the output temperature of the heating element 15 according to the collected axial force of the adjusting rod 14. In this way, closed-loop control is achieved, and whether the mirror surface curvature correction effect of the mirror 11 is achieved can be determined according to the axial force of the adjusting rod 14 collected by the force sensor 17. The output temperature of the heating element 15, the axial force of the adjusting rod 14, and the change amount of the mirror surface curvature of the mirror 11 can be calibrated, a relationship among the three is established, and then a relationship between the temperature of the heating element 15 and the change amount of the mirror surface curvature is obtained, so that the output temperature of the heating element 15 is controlled by the controller, and the mirror surface curvature correction effect of the mirror 11 is achieved.

[0048] Referring to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , in one embodiment, the central adapter 12 comprises a plurality of accommodating cavities 18, which are uniformly and circumferentially arranged on the central adapter 12. In this embodiment, the number of the accommodating cavities 18 is six, and the six accommodating cavities 18 are uniformly and circumferentially arranged on the central adapter 12. The shape of the accommodating cavities 18 can be spherical. The first end of the adjusting rod 14 is a spherical end, and the first end of the adjusting rod 14 is rotatably limited in the accommodating cavities 18. The spherical end of the first end of the adjusting rod 14 is rotatably limited in the spherical accommodating cavities 18. The cooperating relationship between the first end of the adjusting rod 14 and the accommodating cavities 18 of the central adapter 12 can be clearance fit, and there is a gap between the surface of the first end of the adjusting rod 14 and the inner wall of the accommodating cavities 18 of the central adapter 12, and the size of the gap is 2 μm-3 μm.

[0049] In one embodiment, the back of the mirror 11 is provided with a central mounting hole 19 (as shown in Figure 1The material of the center adapter 12 can be invar. The center adapter 12 includes a center fixed end 20 and a connecting end cover 21. The center fixed end 20 is bonded in the center mounting hole 19. The center fixed end 20 can be bonded to the side wall of the center mounting hole 19 by epoxy resin. The connecting end cover 21 is detachably mounted on the upper surface of the center fixed end 20. Thus, the structure of the center adapter 12 is simple and the weight is light. In an embodiment, the center adapter 12 further includes at least six groups of connecting members 24. The connecting end cover 21 is detachably mounted on the upper surface of the center fixed end 20 through the at least six groups of connecting members 24. The at least six groups of connecting members 24 are uniformly and spacedly arranged along the circumference of the center adapter 12. The accommodating cavity 18 can be arranged between two adjacent groups of connecting members 24. One group of connecting members 24 can include two connecting members 24 arranged side by side. The connecting member 24 can be a screw. In the embodiment, the center adapter 12 includes six groups of connecting members 24. The lower surface of the connecting end cover 21 is provided with a first sub-accommodating cavity 22, and the upper surface of the center fixed end 20 is provided with a second sub-accommodating cavity 23. The connecting end cover 21 is mounted on the upper surface of the center fixed end 20, so that the first sub-accommodating cavity 22 and the second sub-accommodating cavity 23 are combined to form the accommodating cavity 18. Thus, the first end of the adjusting rod 14 is assembled in the accommodating cavity 18. The center fixed end 20 is used to realize the fixed connection between the center adapter 12 and the reflecting mirror 11, and the connecting end cover 21 is used to realize the assembly of the first end of the adjusting rod 14 in the accommodating cavity 18 of the center adapter 12.

[0050] Referring to Figure 3 and Figure 6 In an embodiment, the outer edge adapter 16 includes a mounting cavity 25. The material of the outer edge adapter 16 can be invar. The mounting cavity 25 can be spherical. The second end of the adjusting rod 14 is a spherical end, and the second end of the adjusting rod 14 is rotatably limited in the mounting cavity 25. The spherical end of the second end of the adjusting rod 14 is rotatably limited in the spherical mounting cavity 25. The cooperation between the second end of the adjusting rod 14 and the mounting cavity 25 of the outer edge adapter 16 can be a clearance fit. There is a gap between the surface of the second end of the adjusting rod 14 and the inner wall of the mounting cavity 25 of the outer edge adapter 16, and the size of the gap is 2 μm-3 μm.

[0051] In an embodiment, the back of the reflecting mirror 11 is provided with a plurality of outer edge mounting holes 30 (as Figure 1As shown in FIG. 1 ), a plurality of outer edge mounting holes 30 are evenly spaced along the circumference of the reflector 11 and arranged near the outer edge of the reflector 11. In this embodiment, the number of outer edge mounting holes 30 is six. The outer edge adapter 16 includes an outer edge fixing end 26 and a mounting end cover 27. The outer edge fixing end 26 is bonded into the outer edge mounting hole 30. The lower portion of the outer edge fixing end 26 is bonded to the side wall of the outer edge mounting hole 30 by epoxy resin glue. The mounting end cover 27 is detachably mounted on the upper surface of the outer edge fixing end 26. The mounting end cover 27 is detachably mounted on the upper surface of the outer edge fixing end 26 by screws. A first sub-mounting cavity 28 is provided on the lower surface of the mounting end cover 27, and a second sub-mounting cavity 29 is provided on the upper surface of the outer edge fixing end 26. The mounting end cover 27 is mounted on the upper surface of the outer edge fixing end 26 so that the first sub-mounting cavity 28 and the second sub-mounting cavity 29 are combined to form the mounting cavity 25. This facilitates assembling the second end of the adjustment rod 14 into the mounting cavity 25. The outer edge fixing end 26 is used to achieve a fixed connection between the outer edge adapter 16 and the reflector 11, and the mounting end cap 27 is used to assemble the second end of the adjustment rod 14 into the mounting cavity 25 of the outer edge adapter 16.

[0052] In this way, the movement freedom at both ends of the adjusting rod 14 can be constrained by the central adapter 12 and the outer edge adapter 16 , while the rotation freedom at both ends of the adjusting rod 14 can be released.

[0053] See also Figure 7 As shown, the embodiment of the present invention also provides an assembly method of a mirror curvature correction device 10 for a reflector, the assembly method comprising:

[0054] S1: Bond the center adapter 12 to the center mounting hole 19. The center fixing end 20 is bonded to the sidewall of the center mounting hole 19 of the reflector 11. Prior to step S1, the assembly method also includes cleaning components such as the center adapter 12, the outer edge adapter 16, and the adjustment rod 14 to ensure a clean assembly environment for each component, and marking components with identical geometric dimensions.

[0055] S2: Adhere the outer edge adapter 16 to the outer edge mounting hole 30 . In this process, adhere the outer edge fixing end 26 to the side wall of the outer edge mounting hole 30 of the reflector 11 .

[0056] S3: mounting the force sensor 17 along the axial direction of the adjusting rod 14 on the adjusting rod 14, and bonding the heating element 15 to the side wall of the adjusting rod 14. The force sensor 17 is provided with threaded holes at both ends, the adjusting rod 14 comprises a first part and a second part, one end of the first part is a first end, the other end is a threaded end, one end of the second part is a second end, the other end is a threaded end. The threaded end of the first part can be screwed into the threaded hole at one end of the force sensor 17, and GD414 anti-loosening glue is applied, the threaded end of the second part can be screwed into the threaded hole at the other end of the force sensor 17, and GD414 anti-loosening glue is applied, after the GD414 anti-loosening glue is cured, the heating element 15 is bonded to the side wall of the adjusting rod 14 through the GD414 glue, and after the GD414 anti-loosening glue is cured, the adjusting rod 14, the force sensor 17 and the corresponding heating element 15 are marked.

[0057] S4: hingedly connecting the first end of the adjusting rod 14 to the center adapter 12, and hingedly connecting the second end of the adjusting rod 14 to the outer edge adapter 16. The first end of the adjusting rod 14 is placed into the second sub-receiving cavity 23 of the center fixed end 20, the connecting end cover 21 is mounted on the upper surface of the center fixed end 20 through a screw, and GD414 anti-loosening glue is applied at the connecting gap between the connecting end cover 21 and the center fixed end 20, so that the first end of the adjusting rod 14 is rotatably limited in the receiving cavity 18. The second end of the adjusting rod 14 is placed into the second sub-receiving cavity 29 of the outer edge fixed end 26, the mounting end cover 27 is mounted on the upper surface of the outer edge fixed end 26 through a screw, and GD414 anti-loosening glue is applied at the connecting gap between the mounting end cover 27 and the outer edge fixed end 26, so that the second end of the adjusting rod 14 is rotatably limited in the mounting cavity 25.

[0058] After the steps of S4, the assembly method can further comprise checking the connection state of the local part of the mirror surface curvature correction device 10.

[0059] It should be understood that various forms of flow shown above can be reordered, added to, or deleted from. For example, each step described in the present disclosure can be executed in parallel, in sequence, or in a different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, which is not limited herein.

[0060] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A mirror curvature correction device for a reflector, characterized in that: include: A central adapter is provided on the back of the reflector, and the central axis of the central adapter coincides with the optical axis of the reflector; The central transition piece includes a plurality of accommodating cavities, and the plurality of accommodating cavities are evenly spaced along the circumference of the central transition piece; At least three groups of adjustment components are provided on the back of the reflector, one group of adjustment components includes two adjustment components symmetrically arranged with the optical axis of the reflector as the symmetry axis; the adjustment components include an adjustment rod, a heating element, and an outer edge adapter; the outer edge adapter is provided on the back of the reflector and arranged near the outer edge of the reflector; the first ends of at least six adjustment rods are hinged to the central adapter, and the second ends of the adjustment rods are hinged to the outer edge adapter; the outer edge adapter includes a mounting cavity; the first end of the adjustment rod is a spherical end, and the first end of the adjustment rod is rotatably constrained in the accommodating cavity; the second end of the adjustment rod is a spherical end, and the second end of the adjustment rod is rotatably constrained in the mounting cavity; The heating element is arranged on the side wall of the adjusting rod and is used to heat and deform the adjusting rod so as to transfer the axial force of the adjusting rod to the reflecting mirror through the central adapter and the outer edge adapter.

2. The mirror curvature correction device of the reflector according to claim 1, characterized in that: The height of the first end of the adjusting rod is higher than the height of the second end of the adjusting rod.

3. The mirror curvature correction device of a reflector according to claim 1, characterized in that: It also includes a controller; the adjustment component also includes a force sensor, the force sensor is provided on the adjustment rod, and is used to detect the axial force of the adjustment rod; The controller is used to obtain the axial force of the regulating rod collected by the force sensor, and adjust the output temperature of the heating element according to the collected axial force of the regulating rod.

4. The mirror curvature correction device of a reflector according to claim 1, characterized in that: A central mounting hole is provided on the back of the reflector; the central adapter includes a central fixed end and a connecting end cover, the central fixed end is bonded into the central mounting hole, and the connecting end cover is detachably mounted on the upper surface of the central fixed end; a first sub-accommodating cavity is provided on the lower surface of the connecting end cover, and a second sub-accommodating cavity is provided on the upper surface of the central fixed end, and the connecting end cover is mounted on the upper surface of the central fixed end so that the first sub-accommodating cavity and the second sub-accommodating cavity are combined to form the accommodating cavity.

5. The mirror curvature correction device of a reflector according to claim 1, characterized in that: A plurality of outer edge mounting holes are provided on the back of the reflector, and the plurality of outer edge mounting holes are evenly spaced along the circumference of the reflector and arranged close to the outer edge of the reflector; the outer edge adapter includes an outer edge fixing end and a mounting end cover, the outer edge fixing end is bonded into the outer edge mounting hole, and the mounting end cover is detachably mounted on the upper surface of the outer edge fixing end; a first sub-mounting cavity is provided on the lower surface of the mounting end cover, and a second sub-mounting cavity is provided on the upper surface of the outer edge fixing end, and the mounting end cover is mounted on the upper surface of the outer edge fixing end so that the first sub-mounting cavity and the second sub-mounting cavity are combined to form the mounting cavity.

6. The mirror curvature correction device of a reflector according to claim 1, characterized in that: The at least six adjustment components are evenly spaced and arranged along the circumference of the central adapter.

7. The mirror curvature correction device of a reflector according to claim 1, characterized in that: The adjusting rod is made of heat-sensitive material; and / or The adjusting rod is a hollow rod.

8. A method for assembling a mirror curvature correction device for a reflector according to any one of claims 1 to 7, characterized in that: A device for assembling a mirror curvature correction device for a reflector, the device comprising a central adapter and at least three groups of adjustment components; one group of adjustment components comprising two adjustment components symmetrically arranged with the optical axis of the reflector as the axis of symmetry; the adjustment components comprising an adjustment rod, a heating element, an outer edge adapter, and a force sensor; a central mounting hole and a plurality of outer edge mounting holes being arranged evenly spaced along the circumference of the reflector and close to the outer edge of the reflector; and an assembly method comprising: S1: bonding the central adapter to the central mounting hole; S2: bonding the outer edge adapter to the outer edge mounting hole; S3: installing the force sensor on the adjusting rod along the axial direction of the adjusting rod, and bonding the heating element to the side wall of the adjusting rod; S4: hinge the first end of the adjusting rod to the central adapter, and hinge the second end of the adjusting rod to the outer edge adapter.

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