Off-axis optical system assembling method and assembling tool

Abstract

The application provides an assembling and adjusting method and assembling and adjusting tool of an off-axis optical system, and belongs to the technical field of optical engineering. The method is characterized in that: a computer holographic element is designed and processed, the surface type position of a primary mirror is detected and determined by using the computer holographic element, the frame position of the off-axis optical system is determined by using a laser tracker and a standard sphere, and a secondary mirror is adjusted by designing and using an off-axis mirror adjusting tool, so that the full field wave front of the off-axis optical system meets the requirements.

Description

Technical Field

[0001] The present invention relates to the field of optical engineering technology, and in particular provides an off-axis optical system assembly and adjustment method and an assembly and adjustment tool. Background Art

[0002] The reflectors of the off-axis reflector system are mostly aspherical, which breaks the spherical symmetry of the optical elements, resulting in up to 6 degrees of freedom for a single off-axis reflector, and the effects on aberrations are coupled with each other. The reflector is sensitive to position errors and difficult to install and adjust. It is necessary to ensure that each freedom is independent of each other when adjusting the off-axis reflector, and to be able to stably maintain the position and angle of the off-axis reflector. Due to the roll of the off-axis reflector, when its roll angle differs greatly from the roll angle of the frame of the off-axis optical system, the outgoing light will deviate from the theoretical position, making subsequent optical path installation and adjustment difficult. After assembly, it is necessary to ensure that the roll angle of the off-axis reflector is consistent with that of the frame of the off-axis optical system to ensure the position of the outgoing light. The assembly method provided by the existing technology is difficult to maintain consistency.

[0003] Therefore, it is necessary to provide an installation and adjustment method to meet the needs. Summary of the Invention

[0004] The purpose of the present application is to provide an off-axis optical system assembly and adjustment method and an assembly and adjustment tooling to ensure that the roll angle of the off-axis reflector and the frame of the off-axis optical system are consistent, so as to ensure the position of the outgoing light.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for assembling an off-axis optical system, comprising the following steps:

[0007] S1: Design and manufacture a CGE, which includes an off-axis reflector measurement area and a positioning area. The off-axis reflector measurement area is used to test the surface shape of the primary mirror, and the positioning area projects a perfect image point to determine the angle of the CGE.

[0008] S2: Design and manufacture an off-axis reflector adjustment tool, wherein the off-axis reflector adjustment tool is used to achieve six-degree-of-freedom adjustment and position limiting of the off-axis reflector;

[0009] S3: Adjust the position of the CGH element to align it with the wavefront test device;

[0010] S4: placing a target ball at the projection image point of the positioning area of ​​the CGE, adjusting the target ball so that the fringes in the positioning area of ​​the CGE in the CGE are zero fringes, measuring the position of the target ball, and obtaining a first position of the target ball;

[0011] S5: placing a target ball on a frame reference plane of the off-axis optical system, measuring the position of the target ball, and obtaining a second position of the target ball;

[0012] S6: Determine whether the first position of the target ball and the second position of the target ball are consistent in the rolling direction. If they are consistent, proceed to S7; if not, adjust the frame angle of the off-axis optical system and return to S5;

[0013] S7: Using the off-axis reflector adjustment tool to adjust the position and angle of the primary mirror in the off-axis optical system so that the fringes in the off-axis reflector measurement area in the CGH element are zero fringes;

[0014] S8: Using the position and angle of the primary mirror adjusted in S7 as the adjustment reference, adjust the position and angle of the secondary mirror to complete the installation and adjustment of the off-axis optical system.

[0015] The off-axis optical system assembly method provided by the present invention also has the following characteristics: the computer-generated holographic element further includes an alignment area for aligning the computer-generated holographic element and the wavefront testing equipment, and a coarse positioning area for projecting multiple cross lines on the primary mirror as initial positioning references.

[0016] The off-axis optical system assembly and adjustment method provided by the present invention also has the feature that the position of the measuring target sphere is measured using a laser tracker.

[0017] The off-axis optical system assembly and adjustment method provided by the present invention further has the following characteristics: S7 includes:

[0018] S7.1: Use the off-axis reflector adjustment fixture to adjust the position and angle of the primary mirror in the off-axis optical system so that the crosshairs projected from the coarse positioning area in the CGE are distributed along the edge of the primary mirror.

[0019] S7.2: Accurately adjust the position and angle of the primary mirror so that the fringes in the off-axis reflector measurement area in the CGH element are zero fringes.

[0020] The off-axis optical system assembly and adjustment method provided by the present invention further has the following characteristics: S8 comprises:

[0021] S8.1: Use a laser tracker and a target sphere to measure the distance and angle of the off-axis reflector in the off-axis optical system. Adjust the position and angle of the secondary mirror so that the distance and angle of the off-axis reflector are at the theoretical values.

[0022] S8.2: Align the standard reflector with the wavefront test equipment;

[0023] S8.3: Use the off-axis reflector adjustment fixture to fine-tune the position and angle of the secondary mirror in the off-axis optical system to ensure that the full field of view wavefront of the off-axis optical system meets the requirements, completing the installation and adjustment of the off-axis optical system.

[0024] Another object of the present invention is to provide an off-axis optical system assembly and adjustment tool, wherein the assembly and adjustment tool is used to implement any of the above-mentioned assembly and adjustment methods.

[0025] The off-axis optical system adjustment tool provided by the present invention also has the following characteristics: the adjustment tool comprises a fine adjustment component and a coarse adjustment component connected to each other.

[0026] The coarse adjustment component includes a bracket, and a front and rear coarse adjustment plate for coarse front and rear adjustment, a height adjustment gasket for coarse height adjustment, and a left and right coarse adjustment plate for coarse left and right adjustment, which are sequentially fixed on the bracket. The fine adjustment component is fixed on the left and right coarse adjustment plates.

[0027] The fine-tuning components include a reflector connecting shaft for connecting the off-axis reflector, a roll adjustment assembly for adjusting the roll of the off-axis reflector, a translation adjustment assembly for adjusting the up, down, left, and right translation of the off-axis reflector, a front-to-back adjustment assembly for adjusting the front-to-back displacement of the off-axis reflector, an azimuth-pitch adjustment assembly for adjusting the azimuth and pitch of the off-axis reflector, a locking assembly for locking the off-axis reflector, and an optical bar for guiding when adjusting the front-to-back movement of the off-axis reflector.

[0028] The off-axis optical system assembly and adjustment tool provided by the present invention also has the following characteristics: the coarse adjustment component further includes positioning pins for positioning the front and rear coarse adjustment plates, the height adjustment gasket, and the left and right coarse adjustment plates, and screws for fixing the front and rear coarse adjustment plates, the height adjustment gasket, and the left and right coarse adjustment plates.

[0029] The bracket and the front and rear coarse adjustment plates are provided with a rest surface.

[0030] The off-axis optical system assembly and adjustment tool provided by the present invention also has the following characteristics: the roll adjustment assembly includes a first bearing and first bearing inner and outer pressure rings for pressing the first bearing;

[0031] The translation adjustment assembly includes a first translation frame connected to the reflector connecting shaft via a roll adjustment assembly, a second translation frame fixedly connected to the front-rear adjustment assembly, and a translation screw mounted on the second translation frame for adjusting the up-down and left-right translation of the first translation frame;

[0032] The front-to-back adjustment assembly includes a second bearing fixedly connected to the translation adjustment assembly, inner and outer pressure rings of the second bearing for pressing the second bearing, a first front-to-back frame connected to the second bearing, a second front-to-back frame connected to the first front-to-back frame by threads, and front and rear locking screws for fixing the second bearing, wherein the second front-to-back frame is connected to the azimuth and pitch adjustment assembly;

[0033] The azimuth and pitch adjustment assembly includes a tilt frame connected to the front-rear adjustment assembly and the coarse adjustment component, a tilt top screw and a spring installed on the tilt frame for adjusting the azimuth and pitch of the off-axis reflector, and the tilt frame is connected to the front-rear adjustment assembly through a spring.

[0034] The off-axis optical system assembly and adjustment tool provided by the present invention also has the following feature: the locking assembly includes a roll locking screw for fixing the first bearing.

[0035] Beneficial effects

[0036] The assembly and adjustment method provided by the present invention designs and manufactures a computer-generated holographic element, uses the computer-generated holographic element to detect and determine the surface position of the primary mirror, uses a laser tracker and a standard sphere to determine the frame position of the off-axis optical system, and designs and uses an off-axis reflector adjustment tool to adjust the secondary mirror, so that the full-field wavefront of the off-axis optical system meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] Figure 1 A schematic diagram of the assembly and adjustment of the off-axis optical system provided in this application;

[0039] Figure 2 Schematic diagram of alignment between CGH element and interferometer;

[0040] Figure 3 Schematic diagram of position measurement of CGH element;

[0041] Figure 4 Schematic diagram of off-axis optical system frame positioning

[0042] Figure 5 Schematic diagram of the off-axis optical system primary mirror testing and positioning;

[0043] Figure 6 This is a schematic diagram of the rough positioning of the secondary mirror in the off-axis optical system;

[0044] Figure 7 This is a schematic diagram of the standard reflector alignment;

[0045] Figure 8 This is a schematic diagram of the secondary mirror assembly and adjustment of the off-axis optical system;

[0046] Figure 9 Schematic diagram of the off-axis reflector adjustment tooling;

[0047] Figure 10 Front view of the fixture for off-axis reflectors;

[0048] Figure 11 is a cross-sectional view of a fine-tuning component;

[0049] Figure 12 A top view of the fine-tuning component;

[0050] Figure 13 It is a front view of the coarse adjustment component;

[0051] Figure 14 This is a top view of the coarse adjustment component.

[0052] Among them, 1. Wavefront test equipment, 2. Computer-generated hologram element (CGH for short), 3. Laser tracker, 4. Target ball, 5. Off-axis optical system, 6. Standard reflector, 7. 2-dimensional tilting platform, 8. 6-dimensional adjustment platform, 9. Off-axis reflector adjustment tooling, 10. Fine adjustment components, 11. Coarse adjustment components; 12: Mirror connecting shaft; 13: First bearing; 14: Inner and outer pressure rings of the first bearing; 15: First translation frame; 16: Second translation frame; 17: Translation top screw; 18: Second bearing; 19: Inner and outer pressure rings of the second bearing; 20: Front and rear locking top screws; 21: First front and rear frame; 22: Second front and rear frame; 23: Tilt top screw; 24: Tilt frame; 25: Spring; 26: Roll locking top screw; 27: Light bar; 28: Bracket; 29: Front and rear coarse adjustment plate; 30: Height adjustment gasket; 31: Left and right coarse adjustment plate; 32: Positioning pin; 33: Screw. DETAILED DESCRIPTION

[0053] The present application is further described in detail below with reference to the accompanying drawings and examples. However, it should be noted that these embodiments are not limitations of the present application, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are within the scope of protection of the present application.

[0054] In the description of the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the creation of the present application 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the creation of the present application.

[0055] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of the inventions of this application, unless otherwise specified, "plurality" means two or more.

[0056] The terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of these terms in the context of this application based on specific circumstances.

[0057] like Figure 1-8 As shown, an embodiment of the present application provides an off-axis optical system assembly and adjustment method, the method comprising the following steps:

[0058] S1: Design and manufacture a CGE 2, wherein the CGE 2 comprises an off-axis reflector measurement area and a positioning area. The off-axis reflector measurement area is used to test the surface shape of the primary mirror, and the positioning area projects a perfect image point to determine the angle of the CGE 2.

[0059] S2: Design and manufacture an off-axis reflector adjustment tool 9, wherein the off-axis reflector adjustment tool 9 is used to achieve six-degree-of-freedom adjustment and position limiting of the off-axis reflector;

[0060] S3: placing the CGE 2 on the 2D tilting platform 7, and adjusting the 2D tilting platform 7 to align it with the wavefront testing device 1, i.e. making the fringes in the alignment area of ​​the CGE 2 zero fringes;

[0061] S4: placing a target sphere 4 at the projection image point of the positioning area of ​​the CGE 2, adjusting the target sphere 4 so that the fringes in the CGE 2 positioning area are zero fringes, measuring the position of the target sphere 4, and obtaining a first position of the target sphere 4;

[0062] S5: placing the target sphere 4 on the frame reference plane of the off-axis optical system 5, measuring the position of the target sphere 4, and obtaining a second position of the target sphere 4;

[0063] S6: Determine whether the first position of the target ball 4 and the second position of the target ball 4 are consistent in the rolling direction. If they are consistent, proceed to S7; if not, adjust the frame angle of the off-axis optical system 5 and return to S5;

[0064] S7: Use the off-axis reflector adjustment tool 9 to adjust the position and angle of the primary mirror in the off-axis optical system so that the fringes in the off-axis reflector measurement area in the CGH element 2 are zero fringes;

[0065] S8: Using the position and angle of the primary mirror adjusted in S7 as an adjustment reference, adjust the position and angle of the secondary mirror to complete the installation and adjustment of the off-axis optical system 5.

[0066] In some embodiments, the S5 includes: Figure 3 As shown, the angle of the frame reference plane in the off-axis optical system 5 is measured using a laser tracker 3 and a target sphere 4, and the angle of the frame is adjusted using a six-dimensional adjustment platform 8. The first position of the target sphere 4 reflects the roll angle of the CGE 2. When the roll angle of the CGE 2 is known, the roll angle of the frame and the CGE 2 can be ensured to be the same by adjusting the angle of the frame.

[0067] In some embodiments, the CGH element 2 further includes an alignment area for aligning the CGH element and the wavefront testing device 1 and a coarse positioning area for projecting a plurality of cross lines on the primary mirror as initial positioning references.

[0068] In some embodiments, the position of the measurement target sphere 4 is measured using a laser tracker 3 .

[0069] In some embodiments, Figure 4 As shown, the S7 includes:

[0070] S7.1: Use the off-axis reflector adjustment tool 9 to adjust the position and angle of the primary mirror in the off-axis optical system 4 so that the crosshairs projected from the coarse positioning area in the CGE 2 are distributed at the edge of the primary mirror.

[0071] S7.2: Accurately adjust the position and angle of the primary mirror so that the fringes in the off-axis reflector measurement area of ​​the CGH element 2 are zero fringes, ensuring that the primary mirror in the off-axis optical system 5 does not move, which serves as a reference for subsequent adjustment.

[0072] In some embodiments, the S8 includes:

[0073] S8.1: If Figure 5 As shown, a laser tracker 3 and a target sphere 4 are used to measure the distance and angle of the off-axis reflector in the off-axis optical system, and the position and angle of the secondary mirror are adjusted so that the distance and angle of the off-axis reflector are at theoretical values;

[0074] S8.2: If Figure 6 As shown, the standard reflector 6 is aligned with the wavefront testing device 1, that is, the stripes of the standard reflector 6 are zero stripes;

[0075] S8.3: If Figure 7As shown, the off-axis reflector adjustment fixture 9 is used to fine-tune the position and angle of the secondary mirror in the off-axis optical system to ensure that the full-field wavefront of the off-axis optical system 5 meets the requirements, thereby completing the installation and adjustment of the off-axis optical system.

[0076] In some embodiments, Figure 9-14 , provides an off-axis optical system adjustment fixture 9, the adjustment fixture 9 includes a fine adjustment component 10 and a coarse adjustment component 11 connected,

[0077] The coarse adjustment component 11 includes a bracket 28, and a front and rear coarse adjustment plate 29 for coarse front and rear adjustment, a height adjustment gasket 30 for coarse height adjustment, and a left and right coarse adjustment plate 31 for coarse left and right adjustment, which are fixed to the bracket 28 in sequence. The fine adjustment component 10 is fixed on the left and right coarse adjustment plates 31.

[0078] The fine-tuning component 10 includes a reflector connecting shaft 12 for connecting the off-axis reflector, a roll adjustment component for adjusting the roll of the off-axis reflector, a translation adjustment component for adjusting the up, down, left, and right translation of the off-axis reflector, a front-to-back adjustment component for adjusting the front-to-back displacement of the off-axis reflector, an azimuth-pitch adjustment component for adjusting the azimuth and pitch of the off-axis reflector, a locking component for locking the off-axis reflector, and an optical bar 27 for guiding when adjusting the front-to-back movement of the off-axis reflector.

[0079] In some embodiments, the coarse adjustment component 11 further includes a positioning pin 32 for positioning the front and rear coarse adjustment plate 29, the height adjustment gasket 30, and the left and right coarse adjustment plate 31, and a screw 33 for fixing the front and rear coarse adjustment plate 29, the height adjustment gasket 30, and the left and right coarse adjustment plate 31.

[0080] The bracket 28 and the front and rear coarse adjustment plates 28 are provided with a rest surface, which ensures that no tilt is introduced during the coarse adjustment process.

[0081] In some embodiments, the roll adjustment assembly includes a first bearing 13 and first bearing inner and outer pressure rings 14 for pressing the first bearing 13;

[0082] The translation adjustment assembly includes a first translation frame 15 connected to the reflector connecting shaft 12 via a roll adjustment assembly, a second translation frame 16 fixedly connected to the front-rear adjustment assembly, and a translation screw 17 mounted on the second translation frame 16 for adjusting the up-down and left-right translation of the first translation frame 15;

[0083] The front-rear adjustment assembly includes a second bearing 18 fixedly connected to the translation adjustment assembly, a second bearing inner and outer pressure ring 19 for pressing the second bearing 18, a first front-rear frame 21 connected to the second bearing 18, a second front-rear frame 22 connected to the first front-rear frame 21 by threads, and front and rear locking screws 20 for fixing the second bearing 18, and the second front-rear frame 22 is connected to the azimuth and pitch adjustment assembly;

[0084] The azimuth and pitch adjustment assembly includes a tilt frame 24 connected to the front-rear adjustment assembly and the coarse adjustment component, a tilt top screw 23 and a spring 25 installed on the tilt frame 24 for adjusting the azimuth and pitch of the off-axis reflector, and the tilt frame 24 is connected to the front-rear adjustment assembly through the spring 25.

[0085] In some embodiments, the locking assembly includes a rolling locking screw 26 for fixing the first bearing 13 .

[0086] In some embodiments, ultraviolet photosensitive adhesive is used to bond the off-axis reflector and the reflector connecting shaft 12 together to achieve precise adjustment of the six degrees of freedom of the off-axis reflector and avoid coupling of the various degrees of freedom as much as possible. The stability of each degree of freedom is ensured by the top screw, and the position and angle are not easily changed.

[0087] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above description is merely a preferred embodiment of the present application. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A method for assembling an off-axis optical system, characterized in that: The method comprises the following steps: S1: Design and manufacture a CGE, which includes an off-axis reflector measurement area and a positioning area. The off-axis reflector measurement area is used to test the surface shape of the primary mirror, and the positioning area projects a perfect image point to determine the angle of the CGE. S2: Design and manufacture an off-axis reflector adjustment tool, wherein the off-axis reflector adjustment tool is used to achieve six-degree-of-freedom adjustment and position limiting of the off-axis reflector; S3: Adjust the position of the CGH element to align it with the wavefront test device; S4: placing a target ball at the projection image point of the positioning area of ​​the CGE, adjusting the target ball so that the fringes in the positioning area of ​​the CGE in the CGE are zero fringes, measuring the position of the target ball, and obtaining a first position of the target ball; S5: placing a target ball on a frame reference plane of the off-axis optical system, measuring the position of the target ball, and obtaining a second position of the target ball; S6: Determine whether the first position of the target ball and the second position of the target ball are consistent in the rolling direction. If they are consistent, proceed to S7; if not, adjust the frame angle of the off-axis optical system and return to S5; S7: Using the off-axis reflector adjustment tool to adjust the position and angle of the primary mirror in the off-axis optical system so that the fringes in the off-axis reflector measurement area in the CGH element are zero fringes; S8: Using the position and angle of the primary mirror adjusted in S7 as the adjustment reference, adjust the position and angle of the secondary mirror to complete the installation and adjustment of the off-axis optical system.

2. The off-axis optical system assembly method according to claim 1, wherein: The CGH element further comprises an alignment area for aligning the CGH element and a wavefront testing device, and a coarse positioning area for projecting a plurality of cross lines on the primary mirror as initial positioning references.

3. The off-axis optical system assembly and adjustment method according to claim 1, wherein: The position of the measurement target sphere is measured using a laser tracker.

4. The off-axis optical system assembly and adjustment method according to claim 2, wherein: The S7 includes: S7.1: Use the off-axis reflector adjustment fixture to adjust the position and angle of the primary mirror in the off-axis optical system so that the crosshairs projected from the coarse positioning area in the CGE are distributed along the edge of the primary mirror. S7.2: Accurately adjust the position and angle of the primary mirror so that the fringes in the off-axis reflector measurement area in the CGH element are zero fringes.

5. The off-axis optical system assembly and adjustment method according to claim 1, wherein: The S8 includes: S8.1: Use a laser tracker and a target sphere to measure the distance and angle of the off-axis reflector in the off-axis optical system. Adjust the position and angle of the secondary mirror so that the distance and angle of the off-axis reflector are at the theoretical values. S8.2: Align the standard reflector with the wavefront test equipment; S8.3: Use the off-axis reflector adjustment fixture to fine-tune the position and angle of the secondary mirror in the off-axis optical system to ensure that the full field of view wavefront of the off-axis optical system meets the requirements, completing the installation and adjustment of the off-axis optical system.

6. An off-axis optical system assembly tool, characterized in that: The assembly and adjustment tool is used to implement the assembly and adjustment method as described in any one of claims 1 to 5.

7. The off-axis optical system assembly and adjustment tool according to claim 6, characterized in that: The adjustment fixture includes a fine adjustment component and a coarse adjustment component connected to each other. The coarse adjustment component includes a bracket, and a front and rear coarse adjustment plate for coarse front and rear adjustment, a height adjustment gasket for coarse height adjustment, and a left and right coarse adjustment plate for coarse left and right adjustment, which are sequentially fixed on the bracket. The fine adjustment component is fixed on the left and right coarse adjustment plates. The fine-tuning components include a reflector connecting shaft for connecting the off-axis reflector, a roll adjustment assembly for adjusting the roll of the off-axis reflector, a translation adjustment assembly for adjusting the up, down, left, and right translation of the off-axis reflector, a front-to-back adjustment assembly for adjusting the front-to-back displacement of the off-axis reflector, an azimuth-pitch adjustment assembly for adjusting the azimuth and pitch of the off-axis reflector, a locking assembly for locking the off-axis reflector, and an optical bar for guiding when adjusting the front-to-back movement of the off-axis reflector.

8. The off-axis optical system assembly and adjustment tool according to claim 7, characterized in that: The coarse adjustment component also includes positioning pins for positioning the front and rear coarse adjustment plates, the height adjustment gasket and the left and right coarse adjustment plates, and screws for fixing the front and rear coarse adjustment plates, the height adjustment gasket and the left and right coarse adjustment plates. The bracket and the front and rear coarse adjustment plates are provided with a rest surface.

9. The off-axis optical system assembly and adjustment tool according to claim 7, characterized in that: The roll adjustment assembly includes a first bearing and first bearing inner and outer pressure rings for pressing the first bearing; The translation adjustment assembly includes a first translation frame connected to the reflector connecting shaft via a roll adjustment assembly, a second translation frame fixedly connected to the front-rear adjustment assembly, and a translation screw mounted on the second translation frame for adjusting the up-down and left-right translation of the first translation frame; The front-to-back adjustment assembly includes a second bearing fixedly connected to the translation adjustment assembly, inner and outer pressure rings of the second bearing for pressing the second bearing, a first front-to-back frame connected to the second bearing, a second front-to-back frame connected to the first front-to-back frame by threads, and front and rear locking screws for fixing the second bearing, wherein the second front-to-back frame is connected to the azimuth and pitch adjustment assembly; The azimuth and pitch adjustment assembly includes a tilt frame connected to the front-rear adjustment assembly and the coarse adjustment component, a tilt top screw and a spring installed on the tilt frame for adjusting the azimuth and pitch of the off-axis reflector, and the tilt frame is connected to the front-rear adjustment assembly through a spring.

10. The off-axis optical system assembly and adjustment tool according to claim 7, characterized in that: The locking assembly includes a rolling locking screw for fixing the first bearing.

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