Large-aperture telescope performance state rapid detection system and detection method thereof

Abstract

The invention relates to the technical field of telescope detection, in particular to a large-aperture telescope performance state fast detection system and a detection method thereof.The detection system comprises a plane mirror device and a fast detection device, and the plane mirror device is arranged at a preset position of an object space of a large-aperture telescope; the rapid detection device is arranged at a preset position of an image space of the large-aperture telescope and comprises a box body, a laser, a laser beam expander assembly, a spatial filter assembly, a beam splitter prism assembly and a light spot quality analyzer. A light beam emitted by the laser sequentially passes through the laser beam expander, the spatial filter and the beam splitter prism, enters the large-aperture telescope and is emitted; and the light beam is reflected by the plane mirror device and is emitted into the light spot quality analyzer through the beam splitter prism assembly. The system has the advantages that the performance state of the large-aperture telescope is rapidly detected through the plane mirror device and the rapid detection device, and a detection light path does not need to be additionally set up.

Description

Technical Field

[0001] The present invention relates to the technical field of telescope detection, and in particular to a fast detection system and method for the performance status of a large-aperture telescope. Background Art

[0002] As people's pace of deep space exploration accelerates, the aperture of telescopes is gradually increasing. In addition, as the resolution increases, the aperture of the optical system is also increasing, and the weight is increasing sharply, resulting in more significant self-weight and temperature deformation.

[0003] Whether it is a ground-based large-aperture telescope or a vehicle-mounted large-aperture telescope, the telescope itself will undergo slight changes over time, temperature changes, and environmental changes. Therefore, before using a large-aperture telescope, it is a difficult problem that the industry urgently needs to solve to quickly and conveniently detect the performance status of the large-aperture telescope and output the change parameters of the telescope's performance status in a timely manner, so that the large-aperture telescope can maintain a uniform state before each use. Summary of the invention

[0004] In view of this, the present invention aims to provide a large-aperture telescope performance status rapid detection system and detection method thereof, which realizes the detection optical path sharing the optical path with the large-aperture telescope through a plane reflector device and a rapid detection device.

[0005] To achieve the above-mentioned purpose, the technical solution created by the present invention is implemented as follows: a large-aperture telescope performance status rapid detection system, comprising: a plane reflector device, the plane reflector device is arranged at a preset position of the object space of the large-aperture telescope; the plane reflector device is used to reflect the light beam to form a self-collimating optical path; a rapid detection device, the rapid detection device is arranged at a preset position of the image plane of the large-aperture telescope, so that the optical axis of the rapid detection device is coaxial with the optical axis of the large-aperture telescope; the rapid detection device comprises a housing, and a laser, a laser beam expander assembly, a spatial filter assembly, a beam splitter prism assembly and a spot quality analyzer arranged in the housing; the light beam emitted by the laser passes through the laser beam expander assembly, the spatial filter assembly and the beam splitter prism assembly in sequence and enters the large-aperture telescope; the large-aperture telescope emits the light beam, which is received by the plane reflector device; the plane reflector device forms a self-collimating optical path and reflects the light beam back to the large-aperture telescope, the large-aperture telescope emits the returned light beam into the beam splitter prism assembly, and the beam splitter prism assembly emits the light spot quality analyzer.

[0006] Furthermore, the plane reflector device includes a plane reflector, a reflector frame, a reflector bracket and a pressure plate, the plane reflector is arranged in the reflector frame, the reflector bracket and the pressure plate are respectively connected to the reflector frame and are located on one side of the non-reflective surface of the plane reflector; wherein the surface of the pressure plate facing the plane reflector abuts against the non-reflective surface.

[0007] Furthermore, three first bosses are evenly arranged on the inner annular surface of the reflector frame, and three second bosses are arranged on the bottom annular surface of the reflector frame at positions corresponding to the projections of the three first bosses; first connecting ears are symmetrically arranged on the top outer circumference of the reflector frame; the reflecting surface of the plane reflector is placed on the second bosses; and the pressing block is connected to the upper surface of the first bosses.

[0008] Furthermore, the reflector bracket includes a connecting beam and second connecting ears arranged at two ends of the connecting beam, and the second connecting ears are connected to the first connecting ears.

[0009] Furthermore, the box body includes a base plate, an upper shell and two handles. The upper shell is arranged on the base plate, and the two handles are arranged on the upper surface of the upper shell at intervals.

[0010] Furthermore, the laser beam expander assembly includes a laser beam expander and a beam expander bracket, the incident end of the laser beam expander is connected to the output end of the laser, and the beam expander bracket is arranged at the output end of the laser beam expander; the beam expander bracket includes a base and a circular clamping assembly, and the base is connected to the substrate; the circular clamping assembly includes a first circular arc clamping member and a second circular arc clamping member, the first circular arc clamping member is arranged on the base, and the second circular arc clamping member is connected to the first circular arc clamping member, and is used to clamp the laser beam expander.

[0011] Furthermore, the spatial filter assembly includes a spatial filter and a filter bracket, the spatial filter is arranged on the filter bracket, and the filter bracket is connected to the substrate.

[0012] Furthermore, the beam splitter prism assembly includes a beam splitter prism and a prism bracket, the prism bracket is an L-shaped bracket, the horizontal surface of the L-shaped bracket is connected to the substrate, and the beam splitter prism is arranged on the vertical surface of the L-shaped bracket.

[0013] A large-aperture telescope performance detection method is implemented using the large-aperture telescope performance status rapid detection system, comprising the following steps: S1. Set the plane reflector device at a preset position in the object space of the large-aperture telescope; at the same time, set the rapid detection device at a preset position on the image plane of the large-aperture telescope, so that the optical axis of the rapid detection device is coaxial with the optical axis of the large-aperture telescope.

[0014] S2. Turn on the laser, and the light beam passes through the laser beam expander assembly, the spatial filter assembly and the beam splitter prism assembly in sequence, and enters the large-aperture telescope; the light beam is emitted from the large-aperture telescope, and is reflected to the large-aperture telescope by the plane reflector device, and then is emitted into the beam splitter prism assembly through the large-aperture telescope, and the beam splitter prism assembly emits the light beam into the spot quality analyzer, forming a self-collimating optical path.

[0015] S3. Open the analysis software of the spot quality analyzer, and adjust the position of the rapid detection device along the optical axis according to the spot quality evaluated in the analysis software, so that the image plane of the large-aperture telescope is located at the filtering hole of the spatial filter of the spatial filter assembly.

[0016] S4. In step S3, after the rapid detection device is adjusted, the diameter of the received light spot and the position coordinates corresponding to the light spot are measured and recorded by the light spot mass analyzer.

[0017] S5. Compare the diameter and position coordinates of the light spot recorded by the light spot quality analyzer in step S4 with the diameter and position coordinates of the light spot recorded after the initial adjustment of the large-aperture telescope, and obtain the change in the performance status of the current large-aperture telescope.

[0018] Compared with the prior art, the invention can achieve the following beneficial effects: the detection optical path and the large-aperture telescope share the same optical path through the plane reflector device and the rapid detection device, and there is no need to build an additional detection optical path; at the same time, the aperture of the standard plane reflector device is smaller than that of the large-aperture telescope, and the performance status of the large-aperture telescope can be detected without covering the entire aperture of the large-aperture telescope, which simplifies the structure of the large-aperture telescope performance status rapid detection system, reduces the cost and difficulty of large-aperture telescope performance detection, and improves operational convenience and detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 2 is a schematic diagram of the structure of a large-aperture telescope performance status rapid detection system provided according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a plane reflector device provided according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a reflector frame provided according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a reflector bracket provided according to an embodiment of the present invention; Figure 5 is a schematic structural diagram of a rapid detection device provided according to an embodiment of the present invention; Figure 6 is a schematic structural diagram of a box provided according to an embodiment of the present invention; Figure 7 is a schematic structural diagram of a beam expander bracket provided according to an embodiment of the present invention; Figure 8is a structural schematic diagram of a beam splitter prism assembly provided according to an embodiment of the present invention; Fig. 9 Schematic diagram of the structure of an analyzer bracket provided according to an embodiment of the present invention.

[0020] The reference numerals include: 1, large-aperture telescope; 11, primary mirror; 12, secondary mirror; 13, folding reflector; 2, plane reflector device; 21, plane reflector; 22, reflector frame; 221, first boss; 222, second boss; 223, first connecting ear; 23, reflector bracket; 231, connecting beam; 232, second connecting ear; 24, pressing plate; 3, rapid detection device; 31, box; 311, base plate; 312, upper shell; 313, handle; 32 , laser; 33, laser beam expander assembly; 331, laser beam expander; 332, beam expander bracket; 333, base; 334, first arc clamp; 335, second arc clamp; 34, spatial filter assembly; 341, spatial filter; 342, filter bracket; 35, beam splitter prism assembly; 351, beam splitter prism; 352, prism bracket; 36, spot quality analyzer; 37, analyzer bracket; 371, connecting plate; 372, connecting bracket; DETAILED DESCRIPTION In order to make the purpose, technical solution and advantages of the invention more clear, 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 here are only used to explain the invention and do not constitute a limitation of the invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 present 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. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] 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.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] like Figure 1 As shown, a large-aperture telescope performance status rapid detection system provided by an embodiment of the present invention comprises: a plane reflector device 2 and a rapid detection device 3. The plane reflector device 2 is arranged at a preset position in the object space of the large-aperture telescope 1. The plane reflector device 2 is used to form a self-collimating optical path and ensure light beam reflection. The rapid detection device 3 is arranged at a preset position in the image space of the large-aperture telescope 1, so that the optical axis of the rapid detection device 3 is coaxial with the optical axis of the large-aperture telescope 1.

[0026] In this embodiment, the ratio of the aperture of the plane reflector device 2 to the aperture of the large-aperture telescope 1 is less than 1:6.25, and the performance status of the large-aperture telescope 1 can be detected without covering the entire aperture of the large-aperture telescope 1. The large-aperture telescope 1 includes a primary mirror 11, a secondary mirror 12, and a folding reflector 13.

[0027] like Figure 2-Figure 4 As shown, the plane reflector device 2 includes a plane reflector 21, a reflector frame 22, a reflector bracket 23 and a pressure plate 24, the plane reflector 21 is arranged in the reflector frame 22, the reflector bracket 23 and the pressure plate 24 are respectively connected to the reflector frame 22, and are located on one side of the non-reflective surface of the plane reflector 21; wherein, the surface of the pressure plate 24 facing the plane reflector 21 abuts against the non-reflective surface of the plane reflector 21.

[0028] Further, three first bosses 221 are evenly arranged on the inner annular surface of the reflector frame 22, and three second bosses 222 are arranged on the bottom annular surface of the reflector frame 22 at positions corresponding to the projections of the three first bosses 221; first connecting ears 223 are symmetrically arranged on the top outer circumference of the reflector frame 22; the plane reflector 21 is arranged in the reflector frame 22, and the reflecting surface of the plane reflector 21 is placed on the second bosses 222; the pressing block 24 is connected to the upper surface of the first boss 221; the reflector bracket 23 includes a connecting beam 231 and second connecting ears 232 arranged at both ends of the connecting beam 231, and the second connecting ears 232 are connected to the first connecting ears 223; In this embodiment, the pressing plate 24 is an arc-shaped plate, and the outer contour of the pressing plate 24 is matched with the outer contour of the reflector frame 22 .

[0029] Figure 5 As shown, the rapid detection device 3 includes a housing 31 , and a laser 32 , a laser beam expander assembly 33 , a spatial filter assembly 34 , a beam splitter prism assembly 35 and a spot quality analyzer 36 arranged in the housing 31 .

[0030] The light beam emitted by the laser 32 passes through the laser beam expander assembly 33, the spatial filter assembly 34 and the beam splitter prism assembly 35 in sequence and enters the large-aperture telescope 1; the light beam is emitted from the large-aperture telescope 1 and is received by the plane mirror 21 of the plane mirror device 2, and the plane mirror device 2 forms a self-collimating optical path to reflect the light beam back to the large-aperture telescope 1, and the large-aperture telescope 1 injects the returned light beam into the beam splitter prism assembly 35, and the beam splitter prism assembly 35 injects the returned light beam into the spot quality analyzer 36.

[0031] In this embodiment, the laser 32 is preferably a monochromatic visible light laser, and the laser power is greater than 800 milliwatts.

[0032] like Figure 6 As shown, the box body 31 includes a base plate 311 , an upper shell 312 and two handles 313 . The upper shell 312 is arranged on the base plate 311 , and the two handles 313 are arranged on the upper surface of the upper shell 312 .

[0033] In this embodiment, in order to ensure the installation flatness of the laser 32, laser beam expander assembly 33, spatial filter assembly 34, beam splitter assembly 35 and spot quality analyzer 36, mounting bosses are provided on the upper surface of the substrate 311 at positions corresponding to these components.

[0034] The laser beam expander assembly 33 includes a laser beam expander 331 and a beam expander bracket 332 . The incident end of the laser beam expander 331 is connected to the output end of the laser 32 , and the beam expander bracket 332 is arranged at the output end of the laser beam expander 331 .

[0035] like Figure 7 As shown, the beam expander bracket 332 includes a base 333 and a circular clamping assembly, the base 333 is connected to the substrate 311; the circular clamping assembly includes a first arc clamp 334 and a second arc clamp 335, the first arc clamp 334 is arranged on the base 333, and the second arc clamp 335 is connected to the first arc clamp 334, which is used to clamp the laser beam expander 331. In this embodiment, the laser beam expander of the laser beam expander 331 has a magnification greater than or equal to 10 times. For example, the diameter of the light beam is 1mm when it is injected, and the diameter after beam expansion is greater than or equal to 10mm. The base 333 and the first arc clamp 334 are integrally formed.

[0036] The spatial filter assembly 34 includes a spatial filter 341 and a filter bracket 342 . The spatial filter 341 is disposed on the filter bracket 342 , and the filter bracket 342 is connected to the substrate 311 .

[0037] The filter bracket 342 is provided with an elongated hole for adjusting the position of the spatial filter 341 .

[0038] The spatial filter 341 is composed of a filter pinhole and a microscope objective lens. The numerical aperture of the microscope objective lens of the spatial filter 341 can be calculated according to the following formula: NA = 1 / (2×F / #) Among them, NA is the numerical aperture of the microscope objective lens of the spatial filter 341, and F / # is the F / # number of the large aperture telescope 1.

[0039] The filter aperture diameter of the spatial filter 341 can be calculated according to the following formula: 2θ = (2λ) / (π × NA) Wherein, Θ is the filter aperture radius of the spatial filter 341 , λ is the working band of the laser 32 , and NA is the numerical aperture of the microscope objective lens of the spatial filter 341 .

[0040] After the light beam passes through the plane reflector 21 or optical elements such as lenses, the wavefront of the light beam will gradually deteriorate. In addition, due to the influence of small dust particles on the optical elements, diffraction rings that do not exist in the observed object may be generated. The spatial filter 341 can remove the messy wavefront components in the light beam wavefront to obtain a more perfect spherical wave. In the present invention, the spatial filter 341 mainly has two functions: the first part is beam shrinking, that is, changing the size of the light beam; the second part is filtering, that is, using the filter aperture to filter out high-frequency components to maintain the quality of the light spot.

[0041] like Figure 8 As shown, the beam splitter prism assembly 35 includes a beam splitter prism 351 and a prism bracket 352. The prism bracket 352 is an L-shaped bracket. The horizontal surface of the L-shaped bracket 352 is connected to the substrate 311, and the beam splitter prism 351 is arranged on the vertical surface of the L-shaped bracket.

[0042] The beam splitting ratio of the beam splitter 351 is 1:1, that is, 50% is transmitted and 50% is reflected. About 50% of the light will directly pass through the prism at a specific angle or path and continue its propagation path; the other about 50% of the light will be reflected by the surface of the prism and change its propagation direction.

[0043] The height of the beam splitter prism 351 can be calculated according to the following formula: 2D=2×L×NA Wherein, D is half of the height of the beam splitter prism 351 , L is the distance from the spatial filter 341 to the beam splitter prism 351 , and NA is the numerical aperture of the microscope objective lens in the spatial filter 341 .

[0044] In this embodiment, the minimum measurable light beam of the spot quality analyzer 36 is 55 μm, the pixel size is ≤5.5 μm, and the phase plane resolution is ≥2048×2048.

[0045] like Fig. 9 As shown, the spot quality analyzer 36 is connected to the base plate 311 through the analyzer bracket 37. The analyzer bracket 37 includes a connecting plate 371 and a connecting bracket 372. The connecting bracket 372 is arranged on the connecting plate 371, and the spot quality analyzer 36 is connected to the connecting bracket 372. Both the connecting plate 371 and the connecting bracket 372 are provided with waist-shaped holes for adjusting the position.

[0046] A large-aperture telescope performance detection method is implemented using the large-aperture telescope performance status rapid detection system, comprising the following steps: S1. Set the plane reflector device 2 at a preset position in the object space of the large-aperture telescope 1; the preset position in the object space refers to the fixed position of the light aperture of the large-aperture telescope 1 to be tested, and its position tolerance is less than 0.1 mm. At the same time, set the rapid detection device 3 at a preset position on the image plane of the large-aperture telescope 1 (i.e., near the image plane), so that the optical axis of the rapid detection device 3 is adjusted to be coaxial with the optical axis of the large-aperture telescope 1.

[0047] S2. Turn on the laser 32, and the light beam passes through the laser beam expander assembly 33, the spatial filter assembly 34 and the beam splitter prism assembly 35 in sequence, and enters the large-aperture telescope 1. The light beam is emitted from the large-aperture telescope 1 and received by the plane reflector device 2, which reflects the light beam back to the large-aperture telescope 1. The large-aperture telescope 1 injects the returned light beam into the beam splitter prism assembly 35, and the beam splitter prism assembly 35 injects the light spot quality analyzer 36 to form a self-collimating optical path.

[0048] Specifically, the light beam passes through the laser beam expander 331 of the laser beam expander assembly 33, the spatial filter 341 of the spatial filter assembly 34, and the dichroic prism 351 of the dichroic prism assembly 35 in sequence, and is incident on the folding reflector 13 of the large-aperture telescope 1, and is incident on the secondary mirror 12 through the folding reflector 13, and is further incident on the primary mirror 11. The primary mirror 11 projects the light beam onto the plane reflector 21 of the plane reflector device 2, and the plane reflector 21 projects the light beam onto the dichroic prism 351 through the large-aperture telescope 1, and the dichroic prism 351 projects the light beam into the spot quality analyzer 36.

[0049] S3. Open the analysis software of the spot quality analyzer 36, and adjust the position of the rapid detection device 3 along the optical axis according to the spot quality evaluated in the analysis software, so that the image plane of the large-aperture telescope 1 is located at the filtering aperture of the spatial filter 341 of the spatial filter assembly 34.

[0050] S4. In step S3, after the rapid detection device 3 is adjusted, the spot quality analyzer 36 measures and records the diameter of the received light spot and the position coordinates corresponding to the light spot.

[0051] S5. Compare the diameter and position coordinates of the light spot recorded by the light spot quality analyzer 36 in step S4 with the diameter and position coordinates of the light spot recorded after the initial adjustment of the large-aperture telescope 1, and obtain the change in the performance status of the current large-aperture telescope 1.

[0052] 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 large-aperture telescope performance status rapid detection system, characterized in that: include: A plane reflector device, wherein the plane reflector device is arranged at a preset position in the object space of the large-aperture telescope; The plane reflector device is used to reflect the light beam to form a self-collimating light path; A rapid detection device, the rapid detection device is arranged at a preset position of the image plane of the large-aperture telescope, so that the optical axis of the rapid detection device is coaxial with the optical axis of the large-aperture telescope; the rapid detection device comprises a housing, and a laser, a laser beam expander assembly, a spatial filter assembly, a beam splitter prism assembly and a spot quality analyzer arranged in the housing; The light beam emitted by the laser passes through the laser beam expander assembly, the spatial filter assembly and the beam splitter prism assembly in sequence and enters the large-aperture telescope; the large-aperture telescope emits the light beam, which is received by the plane reflector device; the plane reflector device forms a self-collimating optical path and reflects the light beam back to the large-aperture telescope, and the large-aperture telescope emits the returned light beam into the beam splitter prism assembly, and the beam splitter prism assembly emits the returned light beam into the spot quality analyzer.

2. The large-aperture telescope performance status rapid detection system according to claim 1, characterized in that: The plane reflector device includes a plane reflector, a reflector frame, a reflector bracket and a pressure plate, wherein the plane reflector is arranged in the reflector frame, and the reflector bracket and the pressure plate are respectively connected to the reflector frame and are located on one side of the non-reflective surface of the plane reflector; wherein the surface of the pressure plate facing the plane reflector abuts against the non-reflective surface.

3. The large-aperture telescope performance status rapid detection system according to claim 2, characterized in that: Three first bosses are evenly arranged on the inner annular surface of the reflector frame, and three second bosses are arranged on the bottom annular surface of the reflector frame at positions corresponding to the projections of the three first bosses; first connecting ears are symmetrically arranged on the top outer circumference of the reflector frame; the reflecting surface of the plane reflector is placed on the second bosses; and the pressing block is connected to the upper surface of the first bosses.

4. The large-aperture telescope performance status rapid detection system according to claim 3, characterized in that: The reflector bracket includes a connecting beam and second connecting ears arranged at two ends of the connecting beam, and the second connecting ears are connected to the first connecting ears.

5. The large-aperture telescope performance status rapid detection system according to claim 1, characterized in that: The box body comprises a base plate, an upper shell and two handles. The upper shell is arranged on the base plate, and the two handles are arranged on the upper surface of the upper shell at intervals.

6. The large-aperture telescope performance status rapid detection system according to claim 5, characterized in that: The laser beam expander assembly includes a laser beam expander and a beam expander bracket, the incident end of the laser beam expander is connected to the output end of the laser, and the beam expander bracket is arranged at the output end of the laser beam expander; the beam expander bracket includes a base and a circular clamping assembly, and the base is connected to the substrate; the circular clamping assembly includes a first circular arc clamping member and a second circular arc clamping member, the first circular arc clamping member is arranged on the base, and the second circular arc clamping member is connected to the first circular arc clamping member, and is used to clamp the laser beam expander.

7. The large-aperture telescope performance status rapid detection system according to claim 5, characterized in that: The spatial filter assembly comprises a spatial filter and a filter bracket, the spatial filter is arranged on the filter bracket, and the filter bracket is connected to the substrate.

8. The large-aperture telescope performance status rapid detection system according to claim 5, characterized in that: The beam splitter prism assembly comprises a beam splitter prism and a prism bracket, wherein the prism bracket is an L-shaped bracket, the horizontal surface of the L-shaped bracket is connected to the substrate, and the beam splitter prism is arranged on the vertical surface of the L-shaped bracket.

9. A large-aperture telescope performance detection method, implemented by using the large-aperture telescope performance status rapid detection system according to any one of claims 1 to 8, characterized in that: The steps include: S1. The plane reflector device is arranged at a preset position of the object space of the large-aperture telescope; at the same time, the rapid detection device is arranged at a preset position of the image plane of the large-aperture telescope, so that the optical axis of the rapid detection device is coaxial with the optical axis of the large-aperture telescope; S2. Turn on the laser, and the light beam passes through the laser beam expander assembly, the spatial filter assembly and the beam splitter prism assembly in sequence, and enters the large-aperture telescope; the light beam is emitted from the large-aperture telescope, and is reflected by the plane reflector device to the large-aperture telescope, and then is emitted to the beam splitter prism assembly through the large-aperture telescope, and the beam splitter prism assembly emits the light beam to the spot quality analyzer, forming a self-collimating optical path; S3. Open the analysis software of the spot quality analyzer, and adjust the position of the rapid detection device along the optical axis according to the spot quality evaluated in the analysis software, so that the image plane of the large-aperture telescope is located at the filter aperture of the spatial filter of the spatial filter assembly; S4. After adjusting the rapid detection device in step S3, the spot quality analyzer measures and records the diameter of the received spot and the position coordinates corresponding to the spot; S5. Compare the diameter and position coordinates of the light spot recorded by the light spot quality analyzer in step S4 with the diameter and position coordinates of the light spot recorded after the initial adjustment of the large-aperture telescope, and obtain the change in the performance status of the current large-aperture telescope.

Images