A high-precision reflector support structure and assembly method based on room temperature curing silicone rubber

Abstract

This invention proposes a high-precision reflector support structure and assembly method based on room temperature curing silicone rubber. The support structure includes a reflector, a room temperature curing silicone rubber layer, a central support cylinder, a main mirror backplate connector, and multiple screws. In this invention, room temperature curing silicone rubber is used as the adhesive between the optical reflector and the mechanical components. Utilizing the low elastic modulus of room temperature curing silicone rubber after curing, the adhesive layer acts as a transition link between the reflector body and the mechanical components. It can effectively absorb the thermal stress and assembly stress within the optical reflector assembly, avoiding the degradation of mirror surface accuracy caused by the transmission of these stresses to the reflector body. This characteristic allows the optical reflector using the support structure of this invention to maintain high surface accuracy and ensure the working performance of the equipment even when there are large differences in the coefficients of linear expansion between the materials of the components, even under wide variations in ambient temperature.

Description

Technical Field

[0001] This invention belongs to the technical field of optical mirror support methods or optomechanical structure design, and specifically relates to a high-precision mirror support structure and assembly method based on room temperature curing silicone rubber. The support structure is used in ground-based optoelectronic equipment, such as optoelectronic theodolites and telescopes. Background Technology

[0002] Optical mirrors are key components within ground-based optoelectronic equipment, requiring high surface accuracy and environmental adaptability. The rationality of the support structure directly affects the surface accuracy of the optical mirror and its surface stability under different ambient temperatures. Ground-based optoelectronic equipment typically operates in harsh environments, with the overall pitch angle constantly changing, and significant temperature variations between seasons and between day and night. Therefore, the support structure for optical mirrors in ground-based optoelectronic equipment must ensure excellent surface accuracy under different directional gravitational forces and with large temperature variations, while keeping the mirror's displacement and rotation within a small range.

[0003] The closest existing technology to this invention is a mirror center support structure described in patent CN 115793179 A by Li Qingya et al. of the Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences. This structure is as follows... Figure 1 As shown, it mainly includes a mirror body 10, a core 20, and a substrate 30. The core 20 is fixedly connected to the mirror body 10 by an adhesive bonding process; the top protrusion of the substrate 30 is detachably connected to the core 20 by bolts, wherein the protrusion extends into the central hole of the mirror body 10 to support the core 20.

[0004] The disadvantage of this support structure is:

[0005] a) High processing cost: The shaft core 20 is made of Invar steel, which is expensive. Its structure is also relatively complex and has poor processability, which further increases the manufacturing cost.

[0006] b) High assembly requirements: Due to its structural characteristics, the flexible support part of the shaft core 20 is difficult to guarantee the stability of its outer circle size and shape. It needs to be matched with the mirror body 10 during assembly, which greatly limits the assembly efficiency.

[0007] c) The adhesive layer has a single function: The epoxy adhesive used to bond the mirror body 10 and the shaft core 20 has a large elastic modulus and high stiffness after curing. The adhesive layer lacks transition and buffering effects, and the thermal stress generated by assembly stress and temperature changes can easily be transmitted to the optical mirror.

[0008] d) Poor bonding processability: The shaft core 20 is not specially designed for the bonding process, making it difficult to control the uniformity of the adhesive layer and the overflow of adhesive, which may affect the flexibility of the shaft core 20.

[0009] In currently widely used optical mirror support structures, epoxy adhesives are often used to bond optical and mechanical components. The structural forms are often three-point back support or composite support combining the sides and back. These support structures have the following two main problems:

[0010] 1. Epoxy adhesives exhibit high rigidity after curing. The adhesive layer lacks a transition effect, making it easy for assembly stress and thermal stress to be transferred to the optical mirror, resulting in a degradation of the mirror's surface accuracy. This problem is most pronounced when there are significant changes in ambient temperature, making it difficult for mirror assemblies using this technology to adapt to a wide operating temperature range.

[0011] Second, back supports and composite supports have relatively complex structures. These structures have a large number of internal mechanical parts, making the products bulky and heavy. Not only are they costly to manufacture and complex to assemble, but they also impose more constraints on the optical reflectors during use, making it difficult for the reflectors to adapt to drastic changes in the working environment. Summary of the Invention

[0012] The purpose of this invention is to solve the problems in the prior art and to propose a high-precision reflector support structure and assembly method based on room temperature curing silicone rubber.

[0013] This invention is achieved through the following technical solution: This invention proposes a high-precision reflector support structure based on room temperature curing silicone rubber. The support structure includes a reflector 1, a room temperature curing silicone rubber layer 2, a central support cylinder 3, a main mirror backplate connector 4, and multiple screws 5. The reflector 1, the room temperature curing silicone rubber layer 2, the central support cylinder 3, and the main mirror backplate connector 4 are connected in sequence, and the main mirror backplate connector 4 is connected to the central support cylinder 3 by screws 5.

[0014] Furthermore, the reflector 1 includes a reflector body 11, a platform 12, and a central through hole 13; the reflector body 11, the platform 12, and the central through hole 13 are placed in sequence, and the central through hole 13 is machined at the center of the platform 12 as the external interface of the reflector body 11.

[0015] Furthermore, the function of the room temperature curing silicone rubber layer 2 is to bond the central through hole 13 of the reflector 1 to the outer cylindrical surface 31 of the central support cylinder 3. When injecting the silicone rubber into the room temperature curing silicone rubber layer 2, it is necessary to use a bonding tool to assist in ensuring the coaxiality and axial relative position of the reflector body 11 and the central support cylinder 3, while controlling the thickness and bonding area of ​​the room temperature curing silicone rubber layer 2 located between the central through hole 13 of the reflector 1 and the outer cylindrical surface 31 of the central support cylinder 3, so that the room temperature curing silicone rubber can be uniformly filled in the space of the room temperature curing silicone rubber layer 2.

[0016] Furthermore, the central support cylinder 3 includes an outer cylindrical surface 31, an inner cylindrical surface 32, bonding process holes 33 evenly arranged on the side wall, an external thread 34 arranged on the upper end of the outer cylindrical surface 31, an upper end face 35, and a threaded through hole 36 arranged on the upper end face 35.

[0017] Furthermore, uniformly arranged bonding process holes 33 are machined on the side wall of the central support cylinder 3. The bonding process holes 33 are threaded holes, and the hole diameter and hole spacing can be adjusted according to the structural dimensions of the central support cylinder 3 and the curing characteristics of the selected room temperature curing silicone rubber. Before applying the adhesive, set screws are screwed into the bonding process holes 33 from the inner cylindrical surface 32 for sealing. After the adhesive is applied, these set screws are removed. The bonding process holes 33 increase the contact area between the room temperature curing silicone rubber layer 2 and the air, accelerating the uniform curing of the room temperature curing silicone rubber layer 2.

[0018] Furthermore, the threaded through hole 36 is used to connect the central support cylinder 3 and the bonding fixture during the injection process of the room temperature curing silicone rubber layer 2, which can prevent the uncured, liquid silicone rubber from overflowing the space of the room temperature curing silicone rubber layer 2; the threaded through hole 36 can also be used to connect the central support cylinder 3 and other parts in the optical path after the room temperature curing silicone rubber layer 2 has been completely cured.

[0019] Furthermore, the upper end face 35 serves as a connecting flange, which can be used to connect the central support cylinder 3 and the main mirror back plate connector 4.

[0020] Furthermore, the structure of the primary mirror backplate connector 4 includes an upper mounting hole 41, a lower mounting hole 42, a first upper end face 43, a first outer cylindrical surface 44, and a lower end face 45. After the room temperature curing silicone rubber layer 2 is cured, the primary mirror backplate connector 4 is connected to the central support cylinder 3 by screws 5, and the upper end face 35 of the central support cylinder 3 is tightly fitted with the first upper end face 43 of the primary mirror backplate connector 4.

[0021] Furthermore, the main mirror backplate connector 4 is used to provide an external mechanical interface for the entire reflector support structure. Through the main mirror backplate connector 4, the optical reflector can be installed into ground optoelectronic equipment.

[0022] This invention also proposes an assembly method for a high-precision reflector support structure based on room temperature curing silicone rubber, wherein the method specifically comprises:

[0023] First, fully protect the mirror surface of reflector 1, install and position the bonding fixture with reflector 1, and place reflector 1 with the mirror surface facing down along with the bonding fixture on a horizontal workbench to ensure that reflector 1 maintains a stable position throughout the bonding process.

[0024] Then, screw all the bonding process holes 33 into the set screws one by one from the inner cylindrical surface 32 side of the central support cylinder 3, and adjust the screwing depth of the set screws to prevent the set screws from protruding from the outer cylindrical surface 31 of the central support cylinder 3.

[0025] During the injection process, use a glue gun to evenly inject room temperature curing silicone rubber into the room temperature curing silicone rubber layer 2 through the bonding fixture. This allows the paste-like silicone rubber to spread evenly and fill the space within the room temperature curing silicone rubber layer 2, reducing local overflow and air bubbles. After the injection is complete, remove the set screw in the bonding process hole 33 to increase the contact area between the adhesive layer and the air, thus accelerating the curing process.

[0026] After complete curing, the adhesive fixture is removed, and the central through hole 13 of the reflector 1 is connected to the central support cylinder 3 through the room temperature cured silicone rubber layer 2.

[0027] Finally, the primary mirror backplate connector 4 is inserted from one side of the platform 12 of the reflector 1 into the central through hole 13, and its first upper end face 43 is tightly fitted with the upper end face 35 of the central support cylinder 3. The upper mounting hole 41 and the threaded through hole 36 are placed coaxially, and the screw 5 is screwed into the threaded through hole 36 of the central support cylinder 3 from the opposite side of the first upper end face 43 and tightened. Thus, the assembly of the optical reflector support structure is completed.

[0028] The beneficial effects of this invention are:

[0029] First, this invention uses room-temperature curing silicone rubber as the adhesive between the optical mirror and the mechanical components. Utilizing the low elastic modulus of room-temperature curing silicone rubber after curing, the adhesive layer acts as a transition layer between the mirror body and the mechanical components. It can effectively absorb the thermal and assembly stresses within the optical mirror assembly, preventing the degradation of mirror surface accuracy caused by the transmission of these stresses to the mirror body. This characteristic allows the optical mirror using the support structure of this invention to maintain high surface accuracy and ensure the working performance of the equipment even when there are large differences in the coefficients of linear expansion between the materials of the components, even under wide variations in ambient temperature.

[0030] Secondly, the adhesive layer in the support structure of this invention is relatively thick, typically above 1mm. Room temperature curing silicone rubber easily fills the entire adhesive layer during the injection process, thus reducing the dimensional and positional tolerance requirements at the bonding points of the mirror body and mechanical components. This eliminates the machining and lamination operations required for the bonding points of the mirror body and mechanical components in traditional support structures, greatly improving the assembly efficiency of optical mirror products and significantly shortening the development cycle. Furthermore, all mechanical components in the support structure of this invention adopt a simple rigid structure design, eliminating the complex flexible links in traditional support structures. The simplified component structure can be quickly produced using conventional processing methods, thereby reducing the machining difficulty and manufacturing cost of the optical mirror assembly and solving the problems of structural complexity and poor manufacturability in traditional support structures.

[0031] Furthermore, compared with traditional support structures, the central support form adopted in this invention significantly simplifies the support structure of the optical reflector. Not only is the mirror structure simpler and the types and number of mechanical parts fewer, but the optical reflector assembly is also more compact and lighter. After being installed in the corresponding ground equipment, the overall weight reduction of the equipment is also higher. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is an existing technology: an exploded view of the structure of a central support structure for a reflector.

[0034] Figure 2 This is a simplified decoupled structure diagram combining room temperature curing silicone rubber and a central support method, suitable for small and medium diameter mirrors.

[0035] Figure 3 This is an exploded view of a decoupled and simplified structure combining room temperature curing silicone rubber suitable for small and medium diameter mirrors with a central support method.

[0036] Figure 4 This is a schematic diagram of the reflector structure.

[0037] Figure 5 This is a schematic diagram of the central support cylinder structure.

[0038] Figure 6 This is a schematic diagram of the main mirror backplate connector structure. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The optical mirror support structure provided by this invention is as follows: Figures 2-6 As shown in the accompanying drawings. To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," etc., are used only for the purpose of describing the structure of this invention and do not imply that the parts or components referred to must have a specific orientation.

[0041] Combination Figures 2-6 This invention proposes a high-precision reflector support structure based on room temperature curing silicone rubber. The support structure includes a reflector 1, a room temperature curing silicone rubber layer 2 (hereinafter referred to as "the layer"), a central support cylinder 3, a primary mirror backplate connector 4, and multiple screws 5. The reflector 1, the room temperature curing silicone rubber layer 2, the central support cylinder 3, and the primary mirror backplate connector 4 are connected sequentially. The primary mirror backplate connector 4 is connected to the central support cylinder 3 by screws 5. Figure 2 and Figure 3 As shown.

[0042] like Figure 4 As shown, the reflector 1 includes a reflector body 11, a platform 12, and a central through-hole 13. The reflector body 11, platform 12, and central through-hole 13 are arranged sequentially, with the central through-hole 13 machined at the center of the platform 12 as the external interface of the reflector body 11. The reflector body 11 can be made of microcrystalline glass, fused silica, or other optical materials. The back of the body has a simple shape, good overall rigidity, and is easy to machine mechanically and optically.

[0043] The function of the room temperature curing silicone rubber layer 2 is to bond the central through hole 13 of the reflector 1 to the outer cylindrical surface 31 of the central support cylinder 3; this is the only contact medium between the optical and mechanical components in this invention. The material of the adhesive layer 2 is room temperature curing silicone rubber, and the recommended thickness of the adhesive layer 2 is about 1 mm. The specific type of silicone rubber (such as GD414, ND703, etc.) as well as the shape, area, and thickness of the adhesive layer can be determined according to actual usage requirements. When injecting the room temperature curing silicone rubber layer 2, it is necessary to use a bonding fixture to assist in ensuring the coaxiality and axial relative position of the reflector body 11 and the central support cylinder 3, while controlling the thickness and bonding area of ​​the room temperature curing silicone rubber layer 2 located between the central through hole 13 of the reflector 1 and the outer cylindrical surface 31 of the central support cylinder 3, so that the room temperature curing silicone rubber can be evenly filled in the space of the room temperature curing silicone rubber layer 2.

[0044] The central support cylinder 3 is a key component of the reflector assembly and also a crucial part of the bonding process. It can be fabricated using conventional metal materials such as structural steel or titanium alloy. Structurally, the central support cylinder 3 includes an outer cylindrical surface 31, an inner cylindrical surface 32, bonding process holes 33 evenly distributed on the sidewalls, an external thread 34 on the upper end of the outer cylindrical surface 31, an upper end face 35, and threaded through holes 36 arranged on the upper end face 35. Figure 5 As shown.

[0045] To promote the full curing of the silicone rubber in the adhesive layer 2, it is necessary to ensure that the silicone rubber is in full contact with the air. Therefore, uniformly arranged bonding process holes 33 are machined on the side wall of the central support cylinder 3. The bonding process holes 33 are threaded holes, and the hole diameter and hole spacing can be adjusted according to the structural dimensions of the central support cylinder 3 and the curing characteristics of the selected room temperature curing silicone rubber. Before applying the adhesive, set screws are screwed into the bonding process holes 33 from the inner cylindrical surface 32 for sealing. After the adhesive is applied, these set screws are removed. The bonding process holes 33 increase the contact area between the room temperature curing silicone rubber adhesive layer 2 and the air, thus accelerating the uniform curing of the room temperature curing silicone rubber adhesive layer 2.

[0046] The threaded through hole 36 is used to connect the central support cylinder 3 and the bonding fixture during the injection process of the room temperature curing silicone rubber layer 2, which can prevent the uncured, liquid silicone rubber from overflowing the space of the room temperature curing silicone rubber layer 2; the threaded through hole 36 can also be used to connect the central support cylinder 3 and other parts in the optical path after the room temperature curing silicone rubber layer 2 has been completely cured.

[0047] The upper end face 35 serves as a connecting flange and can be used to connect the central support cylinder 3 and the main mirror back plate connector 4.

[0048] The primary mirror backplate connector 4 is connected to the central support cylinder 3 and is made of the same conventional metal material as the central support cylinder 3. The primary mirror backplate connector 4 includes an upper mounting hole 41, a lower mounting hole 42, a first upper end face 43, a first outer cylindrical surface 44, and a lower end face 45, as shown below. Figure 6 As shown, after the room temperature curing silicone rubber layer 2 is cured, the main mirror backplate connector 4 and the central support cylinder 3 are connected by screws 5, and the upper end face 35 of the central support cylinder 3 is tightly fitted with the first upper end face 43 of the main mirror backplate connector 4.

[0049] The main mirror backplate connector 4 is used to provide the external mechanical interface for the entire reflector support structure. Through the main mirror backplate connector 4, the optical reflector can be installed into the ground optoelectronic equipment.

[0050] Traditional support structures often use epoxy adhesives, while this invention uses room-temperature curing silicone rubber. After complete curing, room-temperature curing silicone rubber has a low elastic modulus, allowing the adhesive layer to act as a buffer and transition between the mirror body and the rear mechanical components, effectively absorbing thermal deformation caused by differences in the linear expansion coefficients of the materials within the component when the ambient temperature changes. Simultaneously, room-temperature curing silicone rubber exhibits low shrinkage stress after curing, so large-area bonding will not significantly affect the surface accuracy of the optical mirror, and it also ensures that the bond strength between the optical mirror and the metal components meets the usage requirements.

[0051] Traditional support structures often use mechanical components with flexible links to relieve thermal stress inside the optical mirror assembly. At the same time, the form and position tolerances of the bonded mirror body and mechanical components are very strict to ensure that the contact surfaces can be fully bonded. In contrast, the mechanical components in the support structure of this invention are all rigid structures, eliminating the flexible links. Furthermore, the form and position tolerance requirements for the mirror body and mechanical components at the bonding position are lower, and conventional processing methods can meet the requirements.

[0052] By eliminating flexible links in the mechanical components, the part structure is simplified, thereby reducing the difficulty of machining and manufacturing costs. In this invention, the adhesive layer of the support structure is relatively thick, and the room temperature curing silicone rubber can easily fill the entire adhesive layer space during the injection process. Therefore, the requirements for the form and position tolerances of the mirror body and mechanical components at the bonding position are lower. This eliminates the precision machining steps such as fitting and lapping at the bonding position in traditional support structures, significantly improving the bonding and assembly efficiency of the optical mirror.

[0053] Traditional support mechanisms typically employ a three-point support or a composite support combining side and back supports. These structures are highly complex, involving numerous parts, large size, and heavy equipment. In contrast, the support structure in this invention utilizes a central support design. This central support design simplifies the mirror structure, reduces manufacturing costs associated with mirror material molding, and significantly decreases the types and number of mechanical parts involved in the support structure. Furthermore, it results in a more compact overall optical mirror assembly with a higher degree of weight reduction.

[0054] This invention also proposes an assembly method for a high-precision reflector support structure based on room temperature curing silicone rubber, wherein the method specifically comprises:

[0055] First, fully protect the mirror surface of reflector 1, install and position the bonding fixture with reflector 1, and place reflector 1 with the mirror surface facing down along with the bonding fixture on a horizontal workbench to ensure that reflector 1 maintains a stable position throughout the bonding process.

[0056] Then, screw all the bonding process holes 33 into the set screws or other screws one by one from the inner cylindrical surface 32 side of the central support cylinder 3, and adjust the screwing depth of the set screws to prevent the set screws from protruding from the outer cylindrical surface 31 of the central support cylinder 3.

[0057] During the injection process, use a glue gun to evenly inject room temperature curing silicone rubber into the room temperature curing silicone rubber layer 2 through the bonding fixture. This allows the paste-like silicone rubber to spread evenly and fill the space within the room temperature curing silicone rubber layer 2, reducing local overflow and air bubbles. After the injection is complete, remove the set screw or other screws from the bonding process hole 33 to increase the contact area between the adhesive layer and the air, thus accelerating the curing process.

[0058] The specific curing time varies depending on the grade of silicone rubber used; please refer to the product manual for details. After complete curing, remove the bonding fixture. The central through-hole 13 of the reflector 1 is then connected to the central support cylinder 3 through the room temperature cured silicone rubber layer 2.

[0059] Finally, the primary mirror backplate connector 4 is inserted from one side of the platform 12 of the reflector 1 into the central through hole 13, and its first upper end face 43 is tightly fitted with the upper end face 35 of the central support cylinder 3. The upper mounting hole 41 and the threaded through hole 36 are placed coaxially, and the screw 5 is screwed into the threaded through hole 36 of the central support cylinder 3 from the opposite side of the first upper end face 43 and tightened. Thus, the assembly of the optical reflector support structure is completed.

[0060] This invention provides a novel support structure suitable for high-precision optical mirrors. This structure can be applied in typical ground-based optoelectronic equipment (such as optoelectronic theodolites, telescopes, etc.). By overcoming the effects of gravity under different loading directions and environmental factors such as large-scale temperature changes, it maintains the surface quality of high-precision optical mirrors, thereby ensuring the imaging quality of the optical system and significantly improving the working performance of such ground-based optoelectronic equipment.

[0061] In terms of adhesive selection, the support structure of this invention uses room temperature curing silicone rubber. After curing, the adhesive has a low elastic modulus, which plays a good buffering role between the mirror body and mechanical parts. It can absorb the thermal stress inside the mirror assembly when the temperature changes over a wide range, as well as the adverse effects of gravity in different directions on the surface accuracy of the mirror. At the same time, by optimizing the dimensional parameters of each part in the support structure, the mirror body displacement and rotation caused by the introduction of room temperature curing silicone rubber are controlled to a small order of magnitude, which can fully adapt to the design tolerance of the optical system.

[0062] In terms of structural form, the present invention adopts a central support scheme, which simplifies the structure and greatly reduces the number of mechanical parts. At the same time, based on the characteristics of room temperature curing silicone rubber and the bonding requirements, the structure of each part is optimized and corresponding process details are added, so as to achieve strict control over parameters such as the position and shape of the adhesive layer and the full curing of the adhesive layer.

[0063] The above provides a detailed description of a high-precision reflector support structure and assembly method based on room temperature curing silicone rubber proposed in this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A high-precision reflector support structure based on room temperature curing silicone rubber, characterized in that, The support structure includes a reflector (1), a room temperature curing silicone rubber layer (2), a central support cylinder (3), a main mirror backplate connector (4), and multiple screws (5); the reflector (1), the room temperature curing silicone rubber layer (2), the central support cylinder (3), and the main mirror backplate connector (4) are connected in sequence, and the main mirror backplate connector (4) is connected to the central support cylinder (3) by screws (5); The reflector (1) includes a reflector body (11), a platform (12) and a central through hole (13); the reflector body (11), the platform (12) and the central through hole (13) are placed in sequence, and the central through hole (13) is machined at the center of the platform (12) as the external interface of the reflector body (11); The room temperature curing silicone rubber layer (2) is used to bond the central through hole (13) of the reflector (1) to the outer cylindrical surface (31) of the central support cylinder (3). The central support cylinder (3) includes an outer cylindrical surface (31) in contact with the room temperature curing silicone rubber layer (2), an inner cylindrical surface (32), bonding process holes (33) evenly arranged on the side wall, an external thread (34) arranged on the upper end of the outer cylindrical surface (31), an upper end face (35), and a threaded through hole (36) arranged on the upper end face (35). Evenly arranged bonding process holes (33) are machined on the side wall of the central support cylinder (3). The bonding process holes (33) are threaded holes.

2. The support structure according to claim 1, characterized in that, When injecting adhesive into the room temperature curing silicone rubber layer (2), it is necessary to use a bonding tool to assist in ensuring the coaxiality and axial relative position of the mirror body (11) and the central support cylinder (3). At the same time, control the thickness and bonding area of ​​the room temperature curing silicone rubber layer (2) located between the central through hole (13) of the mirror (1) and the outer cylindrical surface (31) of the central support cylinder (3) so that the room temperature curing silicone rubber can be uniformly filled in the space of the room temperature curing silicone rubber layer (2).

3. The support structure according to claim 2, characterized in that, Adjust the hole size and hole spacing according to the structural dimensions of the central support cylinder (3) and the curing characteristics of the selected room temperature curing silicone rubber; before injection, use set screws to screw into the bonding process hole (33) from the inner cylindrical surface (32) for sealing, and after injection, remove these set screws; the bonding process hole (33) increases the contact area between the room temperature curing silicone rubber layer (2) and the air, accelerating the uniform curing of the room temperature curing silicone rubber layer (2).

4. The support structure according to claim 3, characterized in that, The threaded through hole (36) is used to connect the central support cylinder (3) and the bonding fixture during the injection process of the room temperature curing silicone rubber layer (2), which can prevent the uncured, liquid silicone rubber from overflowing the space of the room temperature curing silicone rubber layer (2); the threaded through hole (36) can also be used to connect the central support cylinder (3) and other parts in the optical path after the room temperature curing silicone rubber layer (2) has been completely cured.

5. The support structure according to claim 4, characterized in that, The upper end face (35) serves as a connecting flange and can be used to connect the central support cylinder (3) and the main mirror back plate connector (4).

6. The support structure according to claim 1, characterized in that, The structure of the main mirror backplate connector (4) includes an upper mounting hole (41), a lower mounting hole (42), a first upper end face (43), a first outer cylindrical surface (44), and a lower end face (45). After the room temperature curing silicone rubber layer (2) is cured, the main mirror backplate connector (4) is connected to the central support cylinder (3) by screws (5). The upper end face (35) of the central support cylinder (3) is tightly fitted with the first upper end face (43) of the main mirror backplate connector (4).

7. The support structure according to claim 6, characterized in that, The main mirror backplate connector (4) is used to provide the external mechanical interface of the entire reflector support structure. Through the main mirror backplate connector (4), the optical reflector can be installed into the ground optoelectronic equipment.

8. An assembly method for a high-precision reflector support structure based on room temperature curing silicone rubber according to any one of claims 1-7, characterized in that, The method is specifically as follows: First, fully protect the mirror surface of the reflector (1), install and position the bonding fixture with the reflector (1), and place the reflector (1) with the mirror surface facing down along with the bonding fixture on a horizontal workbench to ensure that the reflector (1) maintains a stable position throughout the bonding process. Then, screw all the bonding process holes (33) into the set screws one by one from the inner cylindrical surface (32) of the central support cylinder (3), and adjust the screwing depth of the set screws to prevent the set screws from protruding from the outer cylindrical surface (31) of the central support cylinder (3). During the injection process, a glue gun is used to uniformly inject room temperature curing silicone rubber into the room temperature curing silicone rubber layer (2) through the bonding fixture, so that the paste-like silicone rubber is evenly diffused and filled in the space of the room temperature curing silicone rubber layer (2), reducing local overflow and air bubbles. After the injection is completed, the set screw in the bonding process hole (33) is removed to increase the contact area between the adhesive layer and the air and accelerate the curing process. After complete curing, the adhesive fixture is removed, and the central through hole (13) of the reflector (1) is connected to the central support cylinder (3) through the room temperature cured silicone rubber layer (2); Finally, the main mirror backplate connector (4) is inserted into the central through hole (13) from one side of the platform (12) of the reflector (1), and its first upper end face (43) is tightly fitted with the upper end face (35) of the central support cylinder (3). The upper mounting hole (41) and the threaded through hole (36) are placed coaxially, and the screw (5) is screwed into the threaded through hole (36) of the central support cylinder (3) from the opposite side of the first upper end face (43) and tightened. Thus, the assembly of the reflector support structure is completed.

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