Clamping type collimator device for ground detection

Abstract

The invention discloses a clamping type collimator device for ground detection, and the device comprises a main frame which is provided with a light path channel. The rear light path bottom plate is mounted on the main frame, and the rear light path bottom plate is provided with a light emitting port; the tracking and pointing scrambling assembly comprises a beam expanding lens, a piezoelectric galvanometer, a plurality of reflecting mirrors and a tracking and pointing scrambling optical fiber, the beam expanding lens is installed on the rear light path bottom plate, the piezoelectric galvanometer is installed on the rear light path bottom plate, and the reflecting mirrors are installed on the rear light path bottom plate. The multiple reflectors are installed on the rear light path bottom plate according to a preset arrangement mode, the tracking and pointing scrambling pipeline is installed on the rear light path bottom plate, and light beams pass through a light path channel of the main frame and then are emitted to the tracking and pointing scrambling assembly so as to achieve tracking and pointing capture testing and tracking and pointing scrambling testing. Through the technical scheme provided by the invention, the method has the effects of high environmental adaptability, integration and convenience in operation.

Description

Technical Field

[0001] The invention relates to the technical field of optical instrument calibration, and in particular to a card-type collimator device for ground detection. Background Art

[0002] The Cassegrain collimator, also known as the Cassegrain collimator, is a precision optical measurement and calibration instrument, which is widely used in the detection, correction and research and development of optical systems.

[0003] Its design is based on the principle of Cassegrain optical system, which is famous for its unique folded optical path design, and can achieve long focal length in a relatively short physical length, thereby saving space and improving portability. It is mainly used to correct and detect the optical axis consistency of multi-axis integrated optoelectronic products, such as telescopes, camera lenses, laser systems, etc. By generating a stable infinite reference beam, it can help detect whether there are problems such as aberrations and focal length deviations in the optical system.

[0004] Traditional card-type collimators have the disadvantages of being large in size and weight, poor in portability, and being sensitive to the environment in which they are used, due to the complex optical system and structure.

[0005] As a precision optical measurement and calibration device, the collimator plays an important role in providing efficient and accurate optical performance testing and correction.

[0006] Despite its advanced design and powerful functions, it has the following shortcomings in practical applications: poor environmental adaptability and limited applicable scenarios. The performance of traditional card-type parallel light tubes may be affected under environmental conditions with a large temperature span or vibration loads during transportation, such as optical axis offset caused by temperature changes and optical component displacement caused by transportation vibration, which limits its use in harsh or changing environments.

[0007] The weight and volume are large. In order to ensure the optical performance and stability, the lenses of traditional collimators are usually made of high-quality optical glass or crystal materials. These materials have high density and are relatively heavy. At the same time, in order to maintain the shape accuracy of the lens and reduce the impact of thermal expansion and contraction, the lens also requires a heavy base and bearing structure, which further increases the weight.

[0008] The limitation of specific applications, the traditional collimator card collimator is often designed for specific high-precision optical measurement and calibration needs, such as correcting the optical axis consistency of multi-axis integrated optoelectronic products, which determines that it is not a universal optical tool. Its specific design and function are not suitable for many types of optical testing and calibration tasks. Summary of the invention

[0009] One advantage of the present invention is that it provides a card-type collimator device for ground detection, which has the effects of high environmental adaptability, integration and convenient operation.

[0010] In order to achieve at least one of the above advantages of the present invention, the present invention provides a card-type collimator device for ground detection, comprising: a main frame, the main frame having an optical path channel; a rear light path base plate, the rear light path base plate being mounted on the main frame, the rear light path base plate having a light emission port; and A tracking and scrambling component, the tracking and scrambling component includes a beam expander lens, a piezoelectric galvanometer, multiple reflectors and a tracking and scrambling optical fiber, wherein the beam expander lens is installed on the rear optical path bottom plate, the piezoelectric galvanometer is installed on the rear optical path bottom plate, the multiple reflectors are installed on the rear optical path bottom plate according to a preset arrangement, the tracking and scrambling pipeline is installed on the rear optical path bottom plate, and the light beam passes through the optical path channel of the main frame and is emitted to the tracking and scrambling component to realize the tracking and capturing test and the tracking and scrambling test Through the above technical solution, the tracking and scrambling component is used to realize tracking, capturing and scrambling testing. It has excellent temperature adaptability, wide application scenarios, rich functional modules, high degree of integration, small size, light weight, short processing cycle, low cost, and high utilization rate of structural materials. It can realize the ultra-stability and high integration of the card-type parallel light tube device for ground detection of laser communication terminals, and improve the adaptability of the product.

[0011] According to one embodiment of the present invention, the plurality of reflectors include a first reflector, a second reflector and a third reflector, the first reflector is installed at the light emission outlet, the second reflector is arranged parallel to the first reflector, and the first reflector and the second reflector have opposite inclination directions, the third reflector and the second reflector are located in the same vertical plane, and the third reflector and the second reflector have opposite inclination directions.

[0012] Through the above technical scheme, they are arranged in a specific arrangement and tilt direction to change the path of the light beam. Multiple reflectors fix the reflection path of the light beam, so that the light beam is reflected by multiple reflectors, and finally the tracking and aiming capture test and the tracking and aiming scrambling test are realized.

[0013] According to one embodiment of the present invention, the beam expander lens is arranged parallel to the third reflector, the piezoelectric galvanometer mirror is arranged parallel to the beam expander lens, the inclination direction of the piezoelectric galvanometer mirror is opposite to the inclination direction of the third reflector, and the tracking and scrambling optical fiber and the piezoelectric galvanometer mirror are located in the same vertical plane.

[0014] Through the above technical solution, the optical path diagram of the tracking and scrambling components is U-shaped, and they are arranged in a specific arrangement and tilt direction to change the path of the light beam.

[0015] According to an embodiment of the present invention, a transceiver coaxial detection component is included, and the transceiver coaxial detection component is installed on the rear optical path bottom plate.

[0016] Through the above technical solution, after completing the installation and adjustment of the transceiver coaxial detection group and the tracking and aiming scrambling group, the transceiver coaxial detection group, the tracking and aiming scrambling group and the reflector group are fixed on the translation table to achieve high integration and modularization of the rear optical path simulation group.

[0017] According to one embodiment of the present invention, the transceiver coaxial detection component includes a beam splitter prism, an infrared camera and at least one detection optical fiber, wherein the beam splitter prism is installed on the rear light path base plate, the infrared camera is installed on the rear light path base plate, and the detection optical fiber is installed on the rear light path base plate.

[0018] Through the above technical solution, the transceiver coaxial detection component includes a beam splitter prism, an infrared camera and a detection optical fiber, which is installed on the rear optical path bottom plate for detecting and analyzing the light beam.

[0019] According to an embodiment of the present invention, the beam splitter prism is arranged in parallel with the second reflector, the infrared camera and the beam splitter prism are located in the same vertical plane, and the detection optical fiber is arranged in parallel with the beam splitter prism.

[0020] Through the above technical solution, they are arranged in a specific arrangement and tilt direction to change the path of the light beam.

[0021] According to an embodiment of the present invention, it further comprises a main mirror assembly, wherein the main mirror assembly is mounted on the main frame.

[0022] Through the above technical solution, the primary mirror assembly is used to adjust and control the light beam.

[0023] According to one embodiment of the present invention, the main mirror assembly includes a main mirror, an aperture, a main mirror support seat and a main mirror extinction plate, wherein the main mirror support seat is installed on the main frame, the main mirror is installed on the main mirror support seat, and the aperture and the main mirror extinction plate are installed on an end of the main mirror support seat away from the main mirror.

[0024] Through the above technical solution, the primary mirror assembly includes a primary mirror, an aperture, a primary mirror support seat and a primary mirror extinction plate, which are used to adjust and control the light beam.

[0025] According to one embodiment of the present invention, it also includes a primary mirror assembly, which includes a primary mirror, a primary mirror barrel, a primary mirror repair gasket and a primary mirror support frame, wherein the secondary mirror support frame is installed at one end of the main frame away from the primary mirror assembly, the secondary mirror barrel is installed on the secondary mirror support frame, the secondary mirror is installed on the secondary mirror barrel, and the secondary mirror repair gasket is installed on the secondary mirror barrel.

[0026] Through the above technical solution, the secondary mirror assembly includes a secondary mirror, a secondary mirror barrel, a secondary mirror repair gasket and a secondary mirror support frame, which are used to further adjust the light beam.

[0027] According to an embodiment of the present invention, a support assembly is further included, and the support assembly includes a plurality of support frames and a plurality of adjustment members, the plurality of support frames are installed on the main frame, and the plurality of adjustment members are respectively installed on the support frames.

[0028] The above technical solution is composed of a plurality of support frames and adjusting parts, which are used to stabilize and adjust the position of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The schematic diagram of the structure of the card-type collimator device for ground detection of the present invention is shown.

[0030] Figure 2 A schematic diagram of the front view structure of the card-type collimator device for ground detection according to the present invention is shown.

[0031] Figure 3 A structural block diagram showing a partial structure of a tracking and scrambling component and a transceiver coaxial detection component of the card-type parallel light tube device for ground detection according to the present invention is shown.

[0032] Figure 4 A schematic diagram showing the route of the light beam of the tracking and scrambling component of the card-type parallel light tube device for ground detection described in the present invention is shown.

[0033] Figure 5 A schematic diagram showing the route of the light beam of the coaxial detection component of the card-type parallel light tube device for ground detection of the present invention is shown.

[0034] Figure 6 A partial cross-sectional view of the main mirror assembly of the card-type collimator device for ground detection according to the present invention is shown.

[0035] Figure 7 A partial cross-sectional view of a secondary mirror assembly of the card-type collimator device for ground detection according to the present invention is shown.

[0036] Figure 8 The optical path diagram of the collimator of the card-type collimator device for ground detection of the present invention is shown.

[0037] 10. Main frame; 20. Rear optical path bottom plate; 30. Main mirror assembly; 31. Main mirror; 32. Main mirror support seat; 33. Aperture; 34. Main mirror extinction plate; 40. Secondary mirror assembly; 41. Secondary mirror; 42. Secondary mirror barrel; 43. Secondary mirror repair gasket; 44. Secondary mirror support frame; 45. Light shield; 50. Tracking and aiming scrambling assembly; 51. Beam expander lens; 52. Piezoelectric galvanometer; 53. First reflector; 54. Second reflector; 55. Third reflector; 56. Tracking and aiming scrambling optical fiber; 60. Transceiver and transceiver coaxial detection assembly; 61. Beam splitter; 62. Infrared camera; 63. Detection optical fiber; 70. Support assembly; 71. Support frame; 72. Adjustment part; 73. Handle. DETAILED DESCRIPTION

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0039] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0040] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0041] refer to Figures 1 to 8A card-type collimator device for ground detection according to a preferred embodiment of the present invention will be described in detail below. The card-type collimator device for ground detection includes a main frame 10, a rear optical path base plate 20, a primary mirror assembly 30, a primary mirror assembly 40 and a tracking and scrambling assembly 50, wherein the main frame 10 is cylindrical, and the main frame 10 has an optical path channel, and the light beam can be diffused and emitted in the optical path channel, the primary mirror assembly 30 and the secondary mirror assembly 40 are installed at both ends of the main frame 10, the rear optical path base plate 20 is installed on the primary mirror assembly 30, and the tracking and scrambling assembly 50 is installed on the rear optical path base plate 20 to realize tracking and capturing test and tracking and scrambling test, and realize the calibration and measurement of optical instruments.

[0042] Specifically, the tracking and scrambling component 50 includes a beam expander lens 51, a piezoelectric vibrator 52, a plurality of reflectors and at least one tracking and scrambling optical fiber 56. In the present embodiment, three reflectors are provided, namely a first reflector 53, a second reflector 54 and a third reflector 55. The first reflector 53, the second reflector 54 and the third reflector 55 are all installed on the rear optical path bottom plate 20. The first reflector 53 and the second reflector 54 are installed on the same horizontal plane. A light outlet is provided on the rear optical path bottom plate 20. The first reflector 53 is installed at the light outlet, and the second reflector 54 is installed at the light outlet. The second reflector 54 and the third reflector 55 are installed in the same vertical plane, the reflecting surfaces of the second reflector 54 and the third reflector 55 are inclined in opposite directions and are arranged relative to each other, the beam expander lens 51 is installed on the rear optical path base plate 20 and is arranged horizontally, the piezoelectric galvanometer 52 is installed on the rear optical path base plate 20, the piezoelectric galvanometer 52 is inclined and has an inclination direction opposite to that of the third reflector 55, the tracking and scrambling optical fiber 56 is installed on the rear optical path base plate 20, and the tracking and scrambling optical fiber 56 is arranged vertically, that is, the tracking and scrambling component 50 forms a U-shaped optical path loop, and this loop can perform time tracking and scrambling testing.

[0043] That is to say, after the light beam enters the main frame 10 from the secondary mirror assembly 40, the light beam is emitted through the primary mirror assembly 30, emitted from the light emission port, refracted by the first reflector 53 to the second reflector 54, and then refracted by the second reflector 54 to enter the third reflector 55. After passing through the third reflector 55, the light beam enters the beam expander lens 51. The beam expander lens 51 expands the diameter of the light beam, and the expanded light beam enters the piezoelectric galvanometer 52. The piezoelectric galvanometer 52 can simulate satellite vibration. The light beam passing through the piezoelectric galvanometer 52 enters the tracking and aiming scrambling optical fiber 56. In this way, single-ended tracking and aiming capture test and tracking and aiming scrambling test of the laser communication terminal can be realized, and it is set according to a specific arrangement and tilt direction to change the path of the light beam.

[0044] It is worth mentioning that the main frame 10 is an athermal frame, which is a technology designed to reduce or eliminate changes in optical system performance caused by changes in ambient temperature.

[0045] Specifically, the card-type parallel light tube device for ground detection also includes a transceiver coaxial detection component 60, which includes a beam splitter prism 61, an infrared camera 62 and at least one detection optical fiber 63. The beam splitter prism 61 is installed on the rear optical path base plate 20 according to a preset path. The beam splitter prism 61 is arranged parallel to the first reflector 53 and is opposite to the inclination direction of the second reflector 54. The infrared camera 62 is installed on the rear optical path base plate 20. The infrared camera 62 and the beam splitter prism 61 are located in the same vertical plane. The detection optical fiber 63 is installed on the rear optical path base plate 20, which can realize the coaxial transmission and reception detection of the laser communication terminal.

[0046] Furthermore, after the light beam is emitted from the light emitting port, it is reflected by the first reflector 53 and enters the second reflector 54. At this time, part of the light beam enters the third reflector 55, and the other part of the light beam passes through the second reflector 54 and enters the dichroic prism 61. Part of the light beam entering the dichroic prism 61 enters the infrared camera 62, and the other part of the light beam passes through the dichroic prism 61 and enters the detection optical fiber 63. In this way, the infrared camera 62 and the dichroic prism 61 are used in combination to perform infrared spectrum analysis. The infrared camera 62 can be used to detect the signal quality in the optical fiber 63 system and the status of the optical fiber 63. The detection optical fiber 63 is responsible for transmitting data.

[0047] It is worth mentioning that in the present embodiment, the beam splitter prism 61 is a BS beam splitter prism 61, that is, a cubic beam splitter prism 61; two detection optical fibers 63 are provided to form an L shape, and after the light beam is emitted from the beam splitter prism 61 into the detection optical fiber 63, a part of the light beam enters the detection optical fiber 63 in a horizontal position, and the other part of the light beam enters the detection optical fiber 63 in a vertical position.

[0048] In this way, the light source emitted by the laser communication terminal to be tested at one end can be coupled to the receiving detection optical fiber 63 through a parallel light tube, and then the signal can be transmitted to the parallel light tube at the other end, and the laser communication terminal to be tested at this end receives the signal, thereby realizing signal communication between the two optical machines, and realizing the simulation of two-end communication and signal transmission of laser communication terminals over ultra-long distances.

[0049] That is to say, after completing the assembly and adjustment of the coaxial detection component 60 and the tracking and scrambling component 50, the coaxial detection component 60, the tracking and scrambling component 50 and multiple reflectors are fixed on the translation table to achieve high integration and modularization of the rear optical path simulation group.

[0050] Specifically, the main mirror assembly 30 includes a main mirror 31, a main mirror support seat 32, an aperture 33 and a main mirror extinction plate 34, wherein the main mirror support seat 32 is installed on the main frame 10, the main mirror 31 is installed on the main mirror support seat 32, and the aperture 33 and the main mirror extinction plate 34 are installed on one end of the main mirror support seat 32 away from the main mirror 31, thereby reducing the influence of stray light inside the product.

[0051] In this embodiment, the primary mirror support seat 32 is made of indium steel material and has evenly distributed air holes on the side, thereby reducing the curing time required for glue pouring of the primary mirror 31, preventing bubbles from appearing in the glue layer, and ensuring the uniformity of the glue layer.

[0052] In addition, the main mirror 31 is fixed on the main mirror support seat 32 by uniformly pouring glue around the periphery. When the temperature changes, the thermal stress generated by the glue layer of this thickness on the main mirror 31 is minimal. At the same time, under the condition of 1g gravity, the sinking amount of the main mirror 31 due to its own gravity is extremely small, which can realize stress-free installation of large-aperture reflectors and improve the environmental adaptability of the entire system.

[0053] Specifically, the secondary mirror assembly 40 includes a primary mirror 41, a primary mirror barrel 42, a primary mirror repair gasket 43 and a primary mirror support frame 44, wherein the secondary mirror support frame 44 is installed at one end of the main frame 10 away from the main mirror assembly 30, the secondary mirror barrel 42 is installed on the secondary mirror support frame 44, the secondary mirror 41 is installed on the secondary mirror barrel 42, and the secondary mirror repair gasket 43 is installed on the secondary mirror barrel 42.

[0054] In this embodiment, the athermal frame adopts a carbon fiber cylinder structure. When the temperature changes, the change in the axial dimension of the main frame 10 supported by the carbon fiber with a low expansion coefficient can effectively compensate for the difference in the spacing between the primary mirror 31 and the secondary mirror 41 caused by the change in curvature when the temperature changes, thereby achieving wide temperature adaptability of the entire system. At the same time, the inner surface of the main frame 10 is sprayed with matte paint, thereby effectively suppressing stray light.

[0055] In other words, the curvature change caused by temperature change is self-compensated, which realizes the wide temperature adaptability design of the whole system and improves the environmental adaptability of the whole system.

[0056] Furthermore, the secondary mirror assembly 40 further includes a light shield 45 , which is installed on the main frame 10 and close to one side of the secondary mirror supporting frame 44 .

[0057] Specifically, the card-type parallel light tube device for ground detection also includes a support assembly 70, and the support assembly 70 includes multiple support frames 71 and multiple adjustment members 72. In the present embodiment, four support frames 71 are provided, which are symmetrically installed on both sides of the main frame 10 in a predetermined arrangement to ensure the structural rigidity of the main frame 10 in the radial direction. The multiple adjustment members 72 are respectively installed on the support frames 71. In this way, the height and pitch adjustable functions of the entire system are realized.

[0058] In this embodiment, the adjusting member 72 includes two adjusting blocks and a guide rod. The two adjusting blocks are installed on the guide rod. A thread is provided on the guide rod. When the operator rotates one of the adjusting blocks, the rotation of the adjusting block drives the guide rod to rotate, thereby achieving a change in height.

[0059] Furthermore, the support assembly 70 also includes at least a plurality of handles 73, and the plurality of handles 73 are evenly mounted on the support frame 71, which can greatly improve the portability of the system.

[0060] It is worth mentioning that the support frame 71 is made of 6061-T6 aluminum alloy, which realizes the weight reduction design of the whole system and greatly improves the portability of the large-aperture card-type parallel light tube laser communication ground inspection system.

[0061] In summary, the design of this device focuses on high-precision optical testing capabilities, environmental adaptability, integration, and ease of operation. It is suitable for ground detection of laser communication terminals and can maintain stable performance under different temperatures and usage environments. This application has excellent temperature adaptability, a wide range of usage scenarios, rich functional modules, a high degree of integration, a small size, a small weight, a short processing cycle, low cost, and a high utilization rate of structural materials. It can achieve ultra-stability and high integration of the card-type parallel light tube device for ground detection of laser communication terminals, and improve the adaptability of the product.

[0062] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A card-type collimator device for ground detection, characterized in that: include: A main frame, wherein the main frame has an optical path channel; a rear light path bottom plate, the rear light path bottom plate being mounted on the main frame, and the rear light path bottom plate having a light emission port; as well as A tracking and scrambling component, the tracking and scrambling component includes a beam expander lens, a piezoelectric galvanometer, multiple reflectors and tracking and scrambling optical fiber, wherein the beam expander lens is installed on the rear optical path base plate, the piezoelectric galvanometer is installed on the rear optical path base plate, the multiple reflectors are installed on the rear optical path base plate according to a preset arrangement, the tracking and scrambling pipeline is installed on the rear optical path base plate, and the light beam passes through the optical path channel of the main frame and is emitted to the tracking and scrambling component to realize tracking capture test and tracking scrambling test.

2. The card-type collimator device for ground detection according to claim 1, characterized in that: The multiple reflectors include a first reflector, a second reflector and a third reflector, the first reflector is installed at the light outlet, the second reflector is arranged parallel to the first reflector, and the first reflector and the second reflector have opposite inclination directions, the third reflector and the second reflector are located in the same vertical plane, and the third reflector and the second reflector have opposite inclination directions.

3. The card-type collimator device for ground detection according to claim 2, characterized in that: The beam expander lens is arranged in parallel with the third reflector, the piezoelectric galvanometer mirror is arranged in parallel with the beam expander lens, the inclination direction of the piezoelectric galvanometer mirror is opposite to the inclination direction of the third reflector, and the tracking and scrambling optical fiber and the piezoelectric galvanometer mirror are located in the same vertical plane.

4. The card-type collimator device for ground detection according to claim 2, characterized in that: It includes a transceiver coaxial detection component, which is installed on the rear optical path bottom plate.

5. The card-type collimator device for ground detection according to claim 4, characterized in that: The transceiver coaxial detection component includes a beam splitter prism, an infrared camera and at least one detection optical fiber, wherein the beam splitter prism is installed on the rear optical path bottom plate, the infrared camera is installed on the rear optical path bottom plate, and the detection optical fiber is installed on the rear optical path bottom plate.

6. The card-type collimator device for ground detection according to claim 5, characterized in that: The beam splitter prism is arranged in parallel with the second reflector, the infrared camera and the beam splitter prism are located in the same vertical plane, and the detection optical fiber is arranged in parallel with the beam splitter prism.

7. The card-type collimator device for ground detection according to claim 1, characterized in that: Also included is a main mirror assembly, which is mounted on the main frame.

8. The card-type collimator device for ground detection according to claim 7, characterized in that: The main mirror assembly includes a main mirror, an aperture, a main mirror support seat and a main mirror extinction plate, wherein the main mirror support seat is installed on the main frame, the main mirror is installed on the main mirror support seat, and the aperture and the main mirror extinction plate are installed on an end of the main mirror support seat away from the main mirror.

9. The card-type collimator device for ground detection according to claim 8, characterized in that: It also includes a primary mirror assembly, which includes a primary mirror, a primary mirror barrel, a primary mirror repair gasket and a primary mirror support frame, wherein the secondary mirror support frame is installed at one end of the main frame away from the primary mirror assembly, the secondary mirror barrel is installed on the secondary mirror support frame, the secondary mirror is installed on the secondary mirror barrel, and the secondary mirror repair gasket is installed on the secondary mirror barrel.

10. The card-type collimator device for ground detection according to claim 1, characterized in that: It also includes a support assembly, which includes a plurality of support frames and a plurality of adjustment members. The plurality of support frames are installed on the main frame, and the plurality of adjustment members are installed on the support frames respectively.

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