Mirror surface curvature correction device of reflecting mirror and assembling method of mirror surface curvature correction device

Abstract

The invention relates to a mirror surface curvature correction device of a reflecting mirror and an assembling method thereof, the mirror surface curvature correction device comprises a central adapter and at least three groups of adjusting parts, the central adapter is arranged on the back of the reflecting mirror, and the central axis of the central adapter coincides with the optical axis of the reflecting mirror. At least three groups of adjusting parts are arranged on the back of the reflector, and one group of adjusting parts comprises two adjusting parts which are symmetrically arranged by taking the optical axis of the reflector as a symmetry axis. The adjusting component comprises an adjusting rod, a heating piece and an outer edge adapter. The outer edge adapter is arranged on the back of the reflector and is arranged close to the outer edge of the reflector. The first ends of the at least six adjusting rods are jointly hinged to the center adapter, and the second ends of the adjusting rods are hinged to the outer edge adapter. The heating piece is arranged on the side wall of the adjusting rod and used for heating and deforming the adjusting rod so that the axial force of the adjusting rod can act on the reflecting mirror through the center adapter and the outer edge adapter. Therefore, the mirror curvature correction device is simpler in structure.

Description

Technical Field

[0001] The invention belongs to the technical field of space remote sensing, and in particular relates to a mirror curvature correction device for a reflector and an assembling method thereof. Background Art

[0002] High resolution and large aperture have become the main development trend of space telescopes. With the increase in the aperture of space telescopes, in order to reduce the launch cost and support difficulty of mirrors in space telescopes, spliced ​​mirrors composed of multiple mirrors are gradually promoted and used. However, under the combined influence of factors such as gravity, temperature and assembly errors of mirror components, the mirrors often deform, causing the curvature radius of the mirror surface to change, making it difficult to meet the splicing requirements of the mirror components.

[0003] For curvature correction of the reflector, currently, the actuator is mainly used to apply correction force to the reflector, thereby achieving curvature correction of the mirror surface of the reflector. However, this method has a complex overall structure, poor reliability, and heavy weight, which increases the launch cost of the space telescope. Summary of the invention

[0004] In view of this, the present invention aims to provide a mirror curvature correction device for a reflector and an assembly method thereof, which can simplify the structure and reduce the weight of the mirror curvature correction device for the reflector while ensuring the correction of the mirror curvature of the reflector, so that the mirror curvature correction device for the reflector is more stable and reliable during the correction process.

[0005] To achieve the above object, the technical solution created by the present invention is implemented as follows: A mirror curvature correction device for a reflecting mirror, comprising: A central adapter is disposed on the back of the reflector, and the central axis of the central adapter coincides with the optical axis of the reflector; At least three groups of adjustment components are arranged 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 adjustment rods, a heating element and an outer edge adapter; the outer edge adapter is arranged on the back of the reflector and close to 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 heating element is arranged on the side wall of the adjusting rod, and is used to heat up and deform the adjusting rod, so that the axial force of the adjusting rod acts on the reflecting mirror through the central adapter and the outer edge adapter.

[0006] Furthermore, the height of the first end of the adjusting rod is higher than the height of the second end of the adjusting rod.

[0007] Furthermore, it also includes a controller; the adjustment component also includes a force sensor, which is arranged 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 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.

[0008] Furthermore, the central transfer member includes a plurality of accommodating cavities, which are evenly spaced along the circumference of the central transfer member; the first end of the adjusting rod is a spherical end, and the first end of the adjusting rod can be rotatably limited in the accommodating cavity.

[0009] Furthermore, 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 installed 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 installed 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 an accommodating cavity.

[0010] Furthermore, 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.

[0011] Furthermore, 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 comprises 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 a mounting cavity.

[0012] Furthermore, at least six adjustment components are evenly spaced and arranged along the circumference of the central adapter.

[0013] Furthermore, the adjusting rod is made of a heat-sensitive material; and / or The adjusting rod is a hollow rod.

[0014] A method for assembling a mirror curvature correction device of a reflector is used for assembling the mirror curvature correction device of the reflector, wherein the mirror curvature correction device of the reflector comprises a central adapter and at least three groups of adjustment components; one group of adjustment components comprises two adjustment components symmetrically arranged with the optical axis of the reflector as the symmetry axis; the adjustment components comprise 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 are arranged at even intervals along the circumference of the reflector and close to the outer edge of the reflector on the back of the reflector; the assembly method comprises: S1: Glue the center adapter to the center mounting hole; S2: Bond 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.

[0015] Compared with the prior art, the invention can achieve the following beneficial effects: The invention provides a mirror curvature correction device for a reflector, which can use a heating element to heat an adjustment rod. Since the two 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, and effectively realizing the correction of the mirror curvature of the reflector, thereby realizing the 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, and the adjustment rod can only apply the correction force to the reflector through the heating element, without the need to set an actuator, and the weight is light, 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

[0016] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings: Figure 1 A three-dimensional schematic diagram of a mirror curvature correction device for a reflector according to an embodiment of the present invention; Figure 2 A top view of the mirror curvature correction device of the reflector according to an embodiment of the present invention; Figure 3 An exploded view of a central adapter and an adjustment component of a mirror curvature correction device for a reflector according to an embodiment of the present invention; Figure 4 An exploded view of a central adapter of a mirror curvature correction device for a reflector according to an embodiment of the present invention; Figure 5 A top view of a central adapter of a mirror curvature correction device for a reflector according to an embodiment of the present invention; Figure 6 A three-dimensional schematic diagram of some adjustment components of the mirror curvature correction device of the reflector according to an embodiment of the present invention; Figure 7 The present invention provides a flowchart of an assembly method of a mirror curvature correction device for a reflector according to an embodiment of the present invention.

[0017] Description of reference numerals: 10. Mirror curvature correction device of reflector; 11. Reflector; 12. Center adapter; 13. Adjustment component; 14. Adjustment rod; 15. Heating element; 16. Outer edge adapter; 17. Force sensor; 18. Accommodation cavity; 19. Center mounting hole; 20. Center fixed end; 21. Connecting end cover; 22. First sub-accommodation cavity; 23. Second sub-accommodation cavity; 24. Connecting piece; 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

[0018] In order to make the purpose, technical scheme and advantages of the invention clearer, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and do not constitute a limitation to the invention. Similar components in different embodiments use associated similar component numbers. In the following embodiments, many detailed descriptions are to enable the invention to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other components, materials, and methods. In some cases, some operations related to the invention are not shown or described in the specification, in order to avoid the core part of the invention being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to form various implementation methods. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0020] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0021] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] See also Figure 1 and Figure 2 As shown, the embodiment of the invention provides a mirror curvature correction device 10 for a reflector, which can be applied to the mirror curvature correction of a space-based large-aperture reflector assembly. Among them, a spliced ​​reflector composed of multiple reflectors 11 can achieve confocality among the multiple reflectors 11 by correcting the mirror curvature of the reflectors 11. The reflector mirror curvature correction device 10 includes a central adapter 12 and at least three groups of adjustment components 13.

[0024] The center adapter 12 is disposed on the back of the reflector 11, and the central axis of the center adapter 12 coincides with the optical axis of the reflector 11. The center adapter 12 can be bonded to the back of the reflector 11.

[0025] At least three groups of adjustment components 13 are arranged on the back of the reflector 11, and one group of adjustment components 13 includes two adjustment components 13 symmetrically arranged with the optical axis of the reflector 11 as the symmetry axis, that is, the mirror curvature correction device 10 of the reflector includes at least six adjustment components 13. In one embodiment, at least six adjustment components 13 are evenly spaced and arranged along the circumference of the central adapter 12. The adjustment component 13 includes an adjustment rod 14, a heating element 15 and an outer edge adapter 16. In one embodiment, the adjustment rod 14 is a heat-sensitive material. The material of the adjustment rod 14 can be titanium alloy, so that the adjustment rod 14 can be deformed when heated. In one embodiment, the adjustment rod 14 is a hollow rod, so that the adjustment rod 14 is easily deformed when heated. Among them, the shape of the adjustment rod 14 can be cylindrical. In this embodiment, the mirror curvature correction device 10 of the reflector includes three groups of adjustment components 13, that is, six adjustment components 13, so that the number of the adjustment rod 14, the heating element 15 and the outer edge adapter 16 is six. The six adjustment rods 14 are evenly spaced and arranged along the circumference of the central adapter 12. The outer edge adapter 16 is arranged at the back of the reflector 11 and close to the outer edge of the reflector 11. The outer edge adapter 16 can be bonded to the back of the reflector 11.

[0026] Since the adjustment component 13 includes the 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 movement freedom of the two ends of the adjustment rod 14 can be constrained by the central adapter 12 and the outer edge adapter 16, while the rotation freedom of the two ends of the adjustment rod 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.

[0027] 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 the heating element 15 can be one, which surrounds and covers the side wall of the adjusting rod 14. The number of the heating element 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 up 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 mirror 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 heat extension 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 mirror curvature of the reflector 11, and the correction of the mirror curvature of the reflector 11 can be effectively achieved to meet the splicing requirements of the reflector assembly. The overall structure of the mirror curvature correction device 10 for the reflector is simple, making it more stable and reliable during the correction process, and the adjustment rod 14 can apply the correction force to the reflector 11 only through the heating element 15, without the need to set an actuator, and the weight is light, thereby reducing the launch cost. In this way, while ensuring the correction of the mirror curvature of the reflector 11, the structure of the mirror curvature correction device 10 for the reflector can be simplified and the weight can be reduced, making the mirror curvature correction device 10 for the reflector more stable and reliable during the correction process.

[0028] In one embodiment, the mirror curvature correction device 10 of the reflector further includes a controller (not shown in the figure). The adjustment component 13 further includes a force sensor 17, which is arranged on the adjustment rod 14 and is used to detect the axial force of the adjustment rod 14, so as to determine the correction force applied by the adjustment rod 14 to the reflector 11. Among them, the force sensor 17 can be installed on the adjustment rod 14 along the axial direction of the adjustment rod 14. The controller is used to obtain the axial force of the adjustment 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 adjustment rod 14. In this way, closed-loop control is realized, and it can be determined whether the effect of the mirror curvature correction of the reflector 11 is achieved according to the axial force of the adjustment 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 in the mirror curvature of the reflector 11 can be calibrated to establish a connection between the three, and then the relationship between the temperature of the heating element 15 and the change in the mirror curvature can be obtained, so that the output temperature of the heating element 15 can be controlled by a controller to achieve the effect of correcting the mirror curvature of the reflector 11.

[0029] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in one embodiment, the center adapter 12 includes a plurality of accommodating cavities 18, and the plurality of accommodating cavities 18 are evenly spaced along the circumference of the center adapter 12. In this embodiment, the number of the accommodating cavities 18 is six, and the six accommodating cavities 18 are evenly spaced along the circumference of the center adapter 12. Among them, the shape of the accommodating cavity 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 can be rotatably limited in the accommodating cavity 18. The spherical end of the first end of the adjusting rod 14 can be rotatably limited in the spherical accommodating cavity 18. Among them, the matching relationship between the first end of the adjusting rod 14 and the accommodating cavity 18 of the center adapter 12 can be a 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 cavity 18 of the center adapter 12, and the size of the gap is 2μm~3μm.

[0030] In one embodiment, the back of the reflector 11 is provided with a central mounting hole 19 (such as Figure 1As shown). The material of the center adapter 12 can be Invar. The center adapter 12 includes a center fixed end 20 and a connection end cover 21. The center fixed end 20 is bonded to 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 glue. The connection end cover 21 is detachably mounted on the upper surface of the center fixed end 20. In this way, the center adapter 12 has a simple structure and a light weight. In one embodiment, the center adapter 12 also includes at least six groups of connectors 24. The connection end cover 21 is detachably mounted on the upper surface of the center fixed end 20 by at least six groups of connectors 24. At least six groups of connectors 24 are evenly spaced and arranged along the circumference of the center adapter 12. The accommodating cavity 18 can be arranged between two adjacent groups of connectors 24. Among them, one group of connectors 24 can include two connectors 24 arranged side by side. The connector 24 can be a screw. In this embodiment, the center adapter 12 includes six groups of connectors 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 central fixed end 20 is provided with a second sub-accommodating cavity 23. The connecting end cover 21 is installed on the upper surface of the central fixed end 20 so that the first sub-accommodating cavity 22 and the second sub-accommodating cavity 23 are combined to form an accommodating cavity 18. In this way, it is convenient to assemble the first end of the adjusting rod 14 into the accommodating cavity 18. The central fixed end 20 is used to realize the fixed connection between the central adapter 12 and the reflector 11, and the connecting end cover 21 is used to realize the assembly of the first end of the adjusting rod 14 into the accommodating cavity 18 of the central adapter 12.

[0031] See also Figure 3 and Figure 6 As shown, in one embodiment, the outer edge adapter 16 includes a mounting cavity 25. The material of the outer edge adapter 16 may be Invar. The mounting cavity 25 may be formed in a spherical shape. 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 matching relationship between the second end of the adjusting rod 14 and the mounting cavity 25 of the outer edge adapter 16 may be a clearance fit, and 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 2μm~3μm.

[0032] In one embodiment, the back of the reflector 11 is provided with a plurality of peripheral mounting holes 30 (such as Figure 1As shown in the figure, a plurality of outer edge mounting holes 30 are evenly spaced and arranged along the circumference of the reflector 11 and are arranged close to the outer edge of the reflector 11. In this embodiment, the number of the 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, and the outer edge fixing end 26 is bonded into the outer edge mounting hole 30. The lower part 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. The lower surface of the mounting end cover 27 is provided with a first sub-mounting cavity 28, and the upper surface of the outer edge fixing end 26 is provided with a second sub-mounting cavity 29. 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 adjusting rod 14 into the mounting cavity 25. The outer edge fixing end 26 is used to realize the fixed connection between the outer edge adapter 16 and the reflector 11, and the mounting end cap 27 is used to realize the assembly of the second end of the adjusting rod 14 into the mounting cavity 25 of the outer edge adapter 16.

[0033] 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.

[0034] See also Figure 7 As shown, the embodiment of the invention also provides an assembly method of a mirror curvature correction device 10 of a reflector, and the assembly method includes: S1: Bond the center adapter 12 to the center mounting hole 19. The center fixing end 20 is bonded to the side wall of the center mounting hole 19 of the reflector 11. Before step S1, the assembly method further includes cleaning parts such as the center adapter 12, the outer edge adapter 16, the adjustment rod 14, etc., to ensure that the assembly environment of each part is clean, and marking parts with the same geometric structure size.

[0035] S2: Bond the outer edge adapter 16 to the outer edge mounting hole 30 . The outer edge fixing end 26 is bonded to the side wall of the outer edge mounting hole 30 of the reflector 11 .

[0036] S3: Install the force sensor 17 on the adjusting rod 14 along the axial direction of the adjusting rod 14, and bond the heating element 15 to the side wall of the adjusting rod 14. Threaded holes are provided at both ends of the force sensor 17, and the adjusting rod 14 includes a first part and a second part, one end of the first part is a first end, and the other end is a threaded end, and one end of the second part is a second end, and the other end is a threaded end. The threaded end of the first part can be screwed to the threaded hole at one end of the force sensor 17, and GD414 anti-loosening glue is applied, and the threaded end of the second part can be screwed to 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. After the GD414 anti-loosening glue is cured, mark the adjusting rod 14, the force sensor 17 and the corresponding heating element 15.

[0037] S4: Hinging the first end of the adjusting rod 14 to the center adapter 12, and hingeing the second end of the adjusting rod 14 to the outer edge adapter 16. Put the first end of the adjusting rod 14 into the second sub-accommodating cavity 23 of the center fixed end 20, install the connecting end cover 21 on the upper surface of the center fixed end 20 by screws, and apply GD414 anti-loosening glue at the connection gap between the connecting end cover 21 and the center fixed end 20, so that the first end of the adjusting rod 14 can be rotatably limited in the accommodating cavity 18. Put the second end of the adjusting rod 14 into the second sub-mounting cavity 29 of the outer edge fixed end 26, install the mounting end cover 27 on the upper surface of the outer edge fixed end 26 by screws, and apply GD414 anti-loosening glue at the connection gap between the mounting end cover 27 and the outer edge fixed end 26, so that the second end of the adjusting rod 14 can be rotatably limited in the mounting cavity 25.

[0038] After step S4 , the assembly method may further include checking a local connection state of the mirror curvature correction device 10 of the reflecting mirror.

[0039] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0040] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mirror curvature correction device for a reflector, characterized in that: include: A central adapter is disposed on the back of the reflector, and the central axis of the central adapter coincides with the optical axis of the reflector; At least three groups of adjustment components are arranged 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 adjustment rods, a heating element and an outer edge adapter; the outer edge adapter is arranged on the back of the reflector and close to 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 heating element is arranged on the side wall of the adjusting rod, and is used to heat up and deform the adjusting rod, so that the axial force of the adjusting rod acts on 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 the reflector according to claim 1, characterized in that: It also includes a controller; the adjusting component also includes a force sensor, which is arranged on the adjusting rod and is used to detect the axial force of the adjusting rod; The controller is used 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.

4. The mirror curvature correction device of the reflector according to claim 1, characterized in that: The central transfer member includes a plurality of accommodating cavities, which are evenly spaced along the circumference of the central transfer member; 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.

5. The mirror curvature correction device of the reflector according to claim 4, 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 installed 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 installed 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.

6. The mirror curvature correction device of the reflector according to claim 1, characterized in that: The outer edge adapter comprises 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.

7. The mirror curvature correction device of the reflector according to claim 6, characterized in that: A plurality of outer edge mounting holes are arranged 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 comprises 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 arranged on the lower surface of the mounting end cover, and a second sub-mounting cavity is arranged 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.

8. 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.

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

10. A method for assembling a mirror curvature correction device of a reflector, characterized in that: The mirror curvature correction device for a reflector is used for assembling, the mirror curvature correction device for the reflector comprises a central adapter and at least three groups of adjustment components; one group of adjustment components comprises two adjustment components symmetrically arranged with the optical axis of the reflector as the symmetry axis; the adjustment components comprise 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 are arranged at even intervals along the circumference of the reflector and close to the outer edge of the reflector on the back of the reflector; the assembling method comprises: 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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