A high-strength silicon carbide reflector

Abstract

This invention belongs to the field of reflector technology, specifically a high-strength silicon carbide reflector, comprising a reflector body, which includes a mirror panel and a core. A base plate is disposed at the end of the core away from the mirror panel. A silicon carbide fiber mesh and / or a ceramic fiber mesh is laid between the core and the mirror panel. This invention, by laying a silicon carbide fiber mesh and / or a ceramic fiber mesh between the core and the mirror panel, can significantly improve the strength of the reflector, prevent deformation of the reflector due to environmental factors, and improve the accuracy of the reflector.

Description

Technical Field

[0001] This invention belongs to the field of reflector technology, specifically relating to high-strength silicon carbide reflectors. Background Technology

[0002] Silicon carbide is particularly suitable for applications in space optical systems due to its low thermal deformation, high specific stiffness, dimensional stability, and radiation resistance. Silicon carbide mirrors are optical mirrors made of silicon carbide material, which have good mechanical and physical properties and are suitable for optical system mirrors in space satellites, lidar systems, and space telescopes.

[0003] Silicon carbide mirrors are susceptible to deformation during use due to factors such as temperature changes, thermal stress, assembly stress, and vibration, which reduces their accuracy. Therefore, developing a stronger optical mirror that can further improve accuracy is crucial to overcome these factors. Summary of the Invention

[0004] The purpose of this invention is to provide a high-strength silicon carbide reflector. By laying a silicon carbide fiber mesh and / or ceramic fiber mesh between the core and the mirror panel, the strength of the reflector can be greatly improved, the deformation of the reflector due to environmental factors can be avoided, and the accuracy of the reflector can be improved.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] A high-strength silicon carbide reflector includes a reflector body, the reflector body including a mirror panel and a core, a base plate being provided at the end of the core away from the mirror panel, wherein a silicon carbide fiber mesh and / or a ceramic fiber mesh are laid between the core and the mirror panel.

[0007] As a preferred technical solution, the silicon carbide fiber mesh and / or ceramic fiber mesh are embedded during the forming of the silicon carbide mirror blank and integrally formed.

[0008] As a preferred technical solution, the core is configured in a honeycomb shape and is arranged in a gradient from the center of the reflector outwards.

[0009] As a preferred technical solution, the honeycomb pore density in the central region of the core is greater than the honeycomb pore density at the edge of the core.

[0010] As a preferred technical solution, the base plate and the core are integrally sintered.

[0011] As a preferred technical solution, the base plate is also provided with reinforcing ribs.

[0012] As a preferred technical solution, the reinforcing ribs include annular reinforcing ribs and strip reinforcing ribs.

[0013] The technical effects achieved by this invention are as follows:

[0014] This invention significantly improves the strength of the reflector by laying a silicon carbide fiber mesh and / or a ceramic fiber mesh between the core and the mirror panel, thus preventing deformation of the reflector due to environmental factors and improving the accuracy of the reflector.

[0015] This invention, by setting a honeycomb core and multiple sets of reinforcing ribs, can further improve the strength of the reflector and avoid the influence of environmental factors on the reflector. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0017] In the diagram: 1-Mirror body; 11-Mirror panel; 12-Silicon carbide fiber mesh; 13-Ceramic fiber mesh; 14-Core; 15-Base plate. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth. Example

[0022] A high-strength silicon carbide reflector includes a reflector body 1, which comprises a mirror panel 11 and a core 14. A base plate 15 is provided at the end of the core 14 furthest from the mirror panel 11. A silicon carbide fiber mesh 12 and / or a ceramic fiber mesh 13 are laid between the core 14 and the mirror panel 11. Both the reflector body 1 and the core 14 are made of silicon carbide. The silicon carbide fiber mesh 12 and / or ceramic fiber mesh 13 are embedded during the forming of the silicon carbide mirror blank and integrally sintered.

[0023] In this embodiment, by embedding a silicon carbide fiber mesh 12 and / or a ceramic fiber mesh 13 between the core 14 and the mirror panel 11, the fibers can hinder crack propagation, thereby further and effectively improving the strength of the reflector.

[0024] In another preferred embodiment, the core 14 is configured in a honeycomb shape and is arranged in a gradient from the center of the reflector outwards. The honeycomb hole density in the central region of the core 14 is greater than that at the edge of the core 14, which can effectively reduce the weight of the core 14 while increasing the structural strength of the core 14.

[0025] In a preferred embodiment, the base plate 15 and the core 14 are integrally sintered. The base plate 15 is also provided with reinforcing ribs. Depending on the actual needs, the reinforcing ribs include annular reinforcing ribs and strip reinforcing ribs. By setting the reinforcing ribs, the structural strength of the reflector can be further improved, and the reflector can be prevented from deforming due to environmental factors, thereby reducing the accuracy of the reflector.

[0026] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A high-strength silicon carbide mirror comprising a mirror body (1), characterized in that: The reflector body (1) includes a mirror panel (11) and a core (14). A base plate (15) is provided at one end of the core (14) away from the mirror panel (11). A silicon carbide fiber mesh (12) and / or a ceramic fiber mesh (13) are laid between the core (14) and the mirror panel (11).

2. The high-strength silicon carbide mirror of claim 1, wherein: The silicon carbide fiber mesh (12) and / or ceramic fiber mesh (13) are embedded during the molding of the silicon carbide mirror blank and integrally formed.

3. The high-strength silicon carbide mirror of claim 1, wherein: The core (14) is honeycomb-shaped and is arranged in a gradient from the center of the reflector outwards.

4. The high-strength silicon carbide mirror of claim 3, wherein: The honeycomb pore density in the central region of the core (14) is greater than that at the edge of the core (14).

5. The high-strength silicon carbide mirror of claim 1, wherein: The base plate (15) and the core (14) are integrally sintered.

6. The high-strength silicon carbide mirror of claim 5, wherein: The base plate (15) is also provided with reinforcing ribs.

7. The high-strength silicon carbide mirror of claim 6, wherein: The reinforcing ribs include ring-shaped reinforcing ribs and strip-shaped reinforcing ribs.

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