Four-degree-of-freedom decoupling reflector assembling and adjusting method
By using a four-degree-of-freedom decoupled mirror assembly and adjustment method, high-precision optical path system assembly and adjustment was achieved, solving the problem of difficult optical axis eccentricity adjustment in traditional methods and improving the assembly and adjustment accuracy and consistency of the optical system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-14
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional optical lens assembly and adjustment methods are difficult to meet the assembly and adjustment requirements of high-precision optical systems, especially in maintaining coaxiality when the focusing motor drives the focusing lens, and the optical axis eccentricity adjustment is difficult, resulting in insufficient assembly and adjustment accuracy and consistency of the optical path system.
A four-degree-of-freedom decoupled mirror assembly and adjustment method is adopted. By aligning the mechanical reference of the optical path system with a centering instrument, and combining the orthogonal angle adjustment and movement of the mirror, the precise alignment of the exit mirror group, the reflection mechanism and the incident mirror group is achieved, forming a four-degree-of-freedom optical path adjustment mechanism.
It improves the assembly and adjustment accuracy and reliability of the optical path system, ensures optical axis consistency, reduces operation difficulty and time cost, and meets the assembly and adjustment requirements of high-precision optical systems.
Smart Images
Figure CN121806237A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of optical instruments, and more particularly to a four-degree-of-freedom decoupled mirror mounting method. BACKGROUND
[0002] With the continuous development of optical system technology, the precision requirements of optical mechanical mounting are also increasing. Especially in high-precision optical systems such as semiconductor lighting systems and photoelectric sighting systems, the integration precision of the optical path system directly affects the alignment performance and measurement accuracy of the system. The traditional optical lens mounting method generally uses a theodolite to mount the optical path, which is difficult to meet the mounting requirements of high-precision optical systems. These methods are not satisfactory when dealing with laser radar optical paths that need to be packaged in a cylindrical member, especially when the focusing motor drives the focusing mirror to maintain the coaxiality of the focusing mirror and other lenses unchanged during the entire focusing stroke.
[0003] The traditional scheme adjusts the angle by grinding the gasket, most of which are not decoupled and have poor repeatability, cannot achieve high-precision orthogonal angle online adjustment, and the optical axis eccentricity is mostly adjusted by a jackscrew or machined mechanical surface cooperation, which greatly increases the processing and mounting difficulty, and most of the reference transmission is performed through a divided plate or a small hole tooling cooperation. The cumulative error of the cooperation tolerance and the mounting detection error is generally 0.1-0.04 mm, and the mounting precision cannot be further improved.
[0004] Therefore, there is an urgent need for a method that can achieve high precision, low operation difficulty, and fast mounting to meet the requirements of modern optical systems for optical path mounting. Especially when dealing with complex optical path structures and multi-optical axis systems, how to effectively control the optical axis consistency and ensure the imaging quality and measurement accuracy of the system has become a technical problem to be solved. SUMMARY
[0005] Therefore, the purpose of the present application is to provide a four-degree-of-freedom decoupled mirror mounting method, which effectively improves the mounting precision and reliability of the optical path system, ensures the optical axis consistency of the optical path system during the optical path folding process, and reduces the operation difficulty and time cost.
[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:
[0007] A four-degree-of-freedom decoupled mirror mounting method, comprising the following steps:
[0008] Mounting the exit mirror group: aligning the optical axis mechanical reference of the exit mirror group in the optical path system frame with the center of the centering instrument rotary shaft system, aligning the center of the exit mirror group with the center of the centering instrument rotary shaft system, and recording the deviation data;
[0009] The reflection mechanism includes a mirror, the mirror is tilted in the light incident direction and the light exit direction of the optical path system, the mirror is located in the optical path system frame, and the mirror is adjusted in the orthogonal angle and moved in the first direction after installation, so that the exit light path of the reflection mechanism is aligned with the exit mirror group;
[0010] Verification and adjustment: check or determine whether the alignment error of the optical path system meets the requirements, if not, return to the previous step, if yes, execute the next step;
[0011] Install the incident mirror group: the incident mirror group has a sliding adjustment amount in the second direction relative to the optical path system frame, and the second direction is perpendicular to the first direction.
[0012] Preferably, the installation of the exit mirror group includes:
[0013] The exit mirror outer circle reference and the installation end face reference of the optical path system frame are tested using a centering instrument distance sensor, the centering instrument rotation axis system is measured for deviation from the center of the optical path system frame, the deviation between the outer frame exit mirror installation reference and the centering instrument rotation axis is tested, and the deviation data is recorded.
[0014] According to the measurement results, the system error in the centering and installation process of the optical path system frame is separated out, and the centering and installation error of the exit mirror group is obtained by analyzing and processing the measurement data.
[0015] Preferably, the reflection mechanism further includes a reflection frame, the reflection frame and the optical path system frame are connected in sliding along the first direction, the mirror is connected to the reflection frame, and the mirror can be adjusted in the orthogonal angle relative to the reflection frame.
[0016] The installation and adjustment of the reflection mechanism includes:
[0017] The position of the reflection frame on which the mirror is installed is adjusted in the first direction, and the first direction eccentricity measured by testing meets the system index requirements.
[0018] The mirror is adjusted in the orthogonal two-degree-of-freedom tilt, the tilt angle is aligned, and the three-degree-of-freedom alignment in the orthogonal tilt direction and the first direction is completed.
[0019] Preferably, a guide rod is fixedly connected in the optical path system frame, the length direction of the guide rod is the first direction, the guide rod passes through the reflection frame, and a fastener is connected between the reflection frame and the optical path system frame.
[0020] Preferably, a first mounting frame is rotatably arranged on the reflecting frame, a second mounting frame is rotatably arranged on the first mounting frame, the rotation axis of the first mounting frame and the rotation axis of the second mounting frame are perpendicular to each other, and the reflecting mirror is mounted on the second mounting frame; the reflecting frame is provided with a first adjusting member and a second adjusting member, the first adjusting member is used to apply a pushing force or a pulling force to the first mounting frame, and the second adjusting member is used to apply a pushing force or a pulling force to the second mounting frame.
[0021] Preferably, the first adjusting member and the second adjusting member are both push rods, the push rods slide relative to the reflecting frame, the end of the first adjusting member abuts against the first mounting frame, the end of the second adjusting member abuts against the second mounting frame, and the abutting point of the second adjusting member and the second mounting frame is located close to the rotation axis of the first mounting frame.
[0022] Preferably, the first adjusting member and the second adjusting member are both screw rods, and the first adjusting member and the second adjusting member are both threadedly connected with the reflecting frame.
[0023] Preferably, a hinge part is integrally formed between the reflecting frame and the first mounting frame and between the first mounting frame and the second mounting frame, the hinge part has elasticity, and the hinge part serves as the rotation shaft of the first mounting frame or the second mounting frame.
[0024] Preferably, the verifying and adjusting step comprises:
[0025] According to the test result, it is judged whether the relative inclination angle and the free alignment in the moving direction of the reflecting mirror and the exit mirror group meet the index, if not, the step of mounting and adjusting the reflecting mechanism is returned to, and if yes, the next step is performed.
[0026] Preferably, the mounting of the exit mirror group comprises:
[0027] The exit mirror group is mounted on the optical path system frame.
[0028] The position of the exit mirror group in the second direction is adjusted so as to keep the optical axis alignment with the exit mirror group.
[0029] The four-degree-of-freedom decoupling reflecting mirror mounting and adjusting method provided in the application forms a four-degree-of-freedom decoupling optical path adjusting mechanism through the movement of the reflecting mechanism in the first direction, the movement of the exit mirror group in the second direction and the swing of the reflecting mirror in the two orthogonal angle directions, reduces the operation difficulty and time cost, improves the mounting and adjusting precision and reliability of the optical path system, and ensures the optical axis consistency of the optical path system in the optical path turning process. BRIEF DESCRIPTION OF DRAWINGS
[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort based on the provided drawings.
[0031] Figure 1 It is a structural cross-sectional view for embodying the overall structure of the optical path reflection system in the embodiments of the present application.
[0032] Figure 2 It is a structural cross-sectional view for embodying the reflection mechanism in the embodiments of the present application.
[0033] Figure 3 It is a schematic view of the rotation adjustment structure of the reflecting mirror in the embodiments of the present application.
[0034] Figures 1-3 In the drawings, the reference signs include:
[0035] 1, optical path system frame; 11, guide rod; 2, incident mirror group; 3, exit mirror group; 4, reflection mechanism; 41, reflecting mirror; 42, reflection frame; 43, first mounting frame; 44, second mounting frame; 45, hinge part; 46, first adjustment part; 47, second adjustment part. DETAILED DESCRIPTION
[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.
[0037] Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art. The terms "first", "second", and similar terms used in the present application do not represent any order, number, or importance. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly. The embodiments of the present application disclose a four-degree-of-freedom decoupled reflecting mirror adjustment method.
[0038] The core of the present application is to provide a four-degree-of-freedom decoupled reflecting mirror adjustment method.
[0039] Please refer to Figure 1 and Figure 2 In the present application, the optical path reflection system to be assembled is in a square shape, which comprises an optical path system frame 1, an incident mirror group 2, a reflection mechanism 4 and an exit mirror group 3. The reflection mechanism 4 is located in the optical path system frame, and the exit mirror group 3 and the incident mirror group 2 are respectively located at two adjacent sides of the optical path system frame 1. The light enters the optical path system frame 1 through the incident mirror group 2, changes direction after being reflected by the reflection mechanism 4, and then exits from the exit mirror group 3.
[0040] The four-degree-of-freedom decoupled mirror 41 assembly method provided by the present application comprises the following steps in sequence:
[0041] S1: installing the exit mirror group 3: using a centering instrument to align the optical axis mechanical reference of the exit mirror group 3 in the optical path system frame 1, aligning the center of the exit mirror group 3 with the center of the centering instrument rotary shaft system, and recording the deviation data;
[0042] S2: installing and adjusting the reflection mechanism 4: the reflection mechanism 4 comprises a mirror 41, the lens of the mirror 41 is inclined to the incident direction and the exit direction of the light of the optical path system, the mirror 41 is located in the optical path system frame 1, after installation, the mirror 41 is adjusted in orthogonal angles and moved in the first direction, so that the exit light path of the reflection mechanism 4 is aligned with the exit mirror group 3;
[0043] S3: checking and adjusting: checking or judging whether the optical path system alignment error meets the requirements, if not, returning to the previous step, if yes, executing the next step;
[0044] S4: installing the incident mirror group 2: the incident mirror group 2 has a sliding adjustment amount in the second direction relative to the optical path system frame 1, and the second direction is perpendicular to the first direction.
[0045] After the exit mirror group 3 is installed in place, the four-degree-of-freedom decoupled optical path adjustment mechanism is formed by the movement of the reflection mechanism 4 in the first direction, the movement of the incident mirror group 2 in the second direction and the swing of the mirror 41 in the orthogonal two angle directions, which ensures the optical axis consistency of the optical path system in the optical path turning process, improves the assembly and adjustment accuracy and reliability of the optical path system, and reduces the operation difficulty and time cost.
[0046] In the present embodiment, the first direction is defined as the y direction, and the second direction is defined as the x direction, wherein the y direction is parallel to the incident direction of the light, and the x direction is perpendicular to the incident direction and the exit direction of the light.
[0047] The four-degree-of-freedom decoupled mirror 41 assembly method provided by the present application will be described in more detail below in combination with the drawings and specific embodiments.
[0048] In one embodiment, with reference to Figure 1 .
[0049] Specifically, step S1 specifically comprises:
[0050] S11: Test the outer circle reference of the exit mirror of the light path system frame 1 and the mounting end face reference using the centering instrument distance sensor, realize the centering instrument rotation axis system and the centering deviation measurement of the light path system frame 1, test the deviation of the outer frame exit mirror mounting reference and the centering instrument rotation axis, and record the deviation data;
[0051] S12: According to the measurement results, separate out the system error in the centering and adjustment process of the light path system frame 1, and obtain the centering and adjustment error of the exit mirror group 3 by analyzing and processing the measurement data.
[0052] On the basis of the above embodiment, with reference to Figure 1 and Figure 2 .
[0053] Specifically, the reflection mechanism 4 further comprises a reflection frame 42, the reflection mirror 41 is connected to the reflection frame 42 and the reflection mirror 41 can be adjusted in two dimensions along the orthogonal angle relative to the reflection frame 42, and the reflection frame 42 and the light path system frame 1 are slidingly connected along the y direction.
[0054] Step S2 specifically comprises:
[0055] S21: Adjust the position of the reflection frame 42 mounting the reflection mirror 41 in the y direction, and test the y direction eccentricity to meet the system index requirements;
[0056] S22: Adjust the reflection mirror 41 in two orthogonal degrees of freedom to realize the tilt angle alignment and complete the three degrees of freedom alignment in the orthogonal tilt direction and the first direction.
[0057] The angle and position of the reflection mirror 41 need to be monitored at any time during the adjustment process. If the adjustment in S22 does not meet the tolerance requirements after adjustment, the y direction position of the reflection frame 42 needs to be adjusted again. According to the actual angle adjustment situation, the orthogonal angle adjustment of the reflection mirror 41 can be performed before the y direction movement adjustment of the reflection frame 42 when necessary.
[0058] On the basis of the above embodiment, with reference to Figure 1 .
[0059] Specifically, the light path system frame 1 is fixedly connected with a guide rod 11, the length direction of the guide rod 11 is the first direction, the guide rod 11 passes through the reflection frame 42, so that the reflection frame 42 slides through the guide rod 11. The reflection frame 42 and the light path system frame 1 are connected with a fastener, in the embodiment, the fastener is a bolt, the bolt is threadedly connected with the reflection frame 42, the axis of the bolt is perpendicular to the length direction of the guide rod 11; the head of the bolt can abut against the light path system frame 1, after abutting, the reflection frame 42 is kept fixed relative to the light path system frame 1.
[0060] On the basis of the above embodiment, reference is made to Figure 2 and Figure 3 .
[0061] Specifically, the reflection frame 42 is rotationally provided with a circular first mounting frame 43, the first mounting frame 43 is rotationally provided with a circular second mounting frame 44, the second mounting frame 44 is located at the inner side of the first mounting frame 43, the rotation axis of the first mounting frame 43 and the rotation axis of the second mounting frame 44 are perpendicular to each other, and the reflecting mirror 41 is mounted on the second mounting frame 44; thus, under the cooperation of the first mounting frame 43 and the second mounting frame 44, the reflecting mirror 41 has the orthogonal two-dimensional rotation capability relative to the reflection frame 42. Among them, the rotation axis of the first mounting frame 43 relative to the reflection frame 42 is parallel to the second direction, and the rotation axis of the second mounting frame 44 relative to the first mounting frame 43 is parallel to the mirror surface of the reflecting mirror 41.
[0062] The reflection frame 42 is provided with a first adjusting member 46 and a second adjusting member 47, the first adjusting member 46 is used to exert a pushing force or a pulling force on the first mounting frame 43, and the second adjusting member 47 is used to exert a pushing force or a pulling force on the second mounting frame 44, the pushing force or the pulling force acting on the corresponding mounting frame forms a torque on the corresponding mounting frame to make it rotate, thereby achieving the purpose of angle adjustment.
[0063] On the basis of the above embodiment, reference is made to Figure 2 and Figure 3 .
[0064] Specifically, the first adjusting member 46 and the second adjusting member 47 are both push rods, the push rods slide relative to the reflection frame 42, the length directions of the two push rods and the sliding directions are both parallel to the direction in which the light passes through the exit mirror group 3, the end of the first adjusting member 46 abuts against the first mounting frame 43, the end of the second adjusting member 47 abuts against the second mounting frame 44, and the abutment point between the second adjusting member 47 and the second mounting frame 44 is located close to the rotation axis of the first mounting frame 43, that is, in the process of rotation of the first mounting frame 43, the rotation axis part of the first mounting frame 43 has substantially no displacement, and therefore the state in which the second mounting frame 44 is abutted by the push rod is also substantially not affected, so as to enable the orthogonal angle adjustment mechanism of the reflecting mirror 41 to smoothly operate.
[0065] On the basis of the above-mentioned embodiments, reference is made to Figure 2 .
[0066] Specifically, the first adjusting member 46 and the second adjusting member 47 are both screw rods, and the first adjusting member 46 and the second adjusting member 47 are both threadedly connected with the reflecting frame 42; the first adjusting member 46 and the second adjusting member 47 are rotated to control the movement of the push rods and the angle adjustment of the corresponding mounting frames, and when not rotated, the self-locking characteristics of the threads can also keep the axial positions of the two push rods stationary.
[0067] On the basis of the above-mentioned embodiments, reference is made to Figure 3 .
[0068] Specifically, the reflecting frame 42, the first mounting frame 43 and the second mounting frame 44 are all hard plastic pieces, and two hinge parts 45 are integrally formed between the reflecting frame 42 and the first mounting frame 43 and between the first mounting frame 43 and the second mounting frame 44; the two hinge parts 45 between the reflecting frame 42 and the first mounting frame 43 are respectively located at opposite sides of the outer part of the first frame, and the hinge parts 45 between the first frame and the second frame are respectively located at opposite sides of the outer part of the second frame.
[0069] The hinge part 45 is a thin and thin plastic structure with a certain elastic deformation capacity, and the hinge part 45 serves as the pivot of the first mounting frame 43 or the second mounting frame 44; in the natural state, the reflecting frame 42, the first mounting frame 43 and the second mounting frame 44 are flush, when the first mounting frame 43 or the second mounting frame 44 is subjected to the action of the pushing force and rotates, the corresponding hinge part 45 deforms, the angle is changed but still has a tendency to rebound and deform, so as to keep a balanced state under the joint action of the push rod.
[0070] On the basis of the above-mentioned embodiments, reference is made to Figure 1 .
[0071] Specifically, the S3 checking and adjusting step is specifically:
[0072] According to the test results, it is judged whether the relative inclination angle and the free degree of alignment in the moving direction of the reflecting mirror 41 and the exit mirror group 3 are less than the preset adjustment stroke, the adjustment stroke is the minimum tolerance allowed, and the preset adjustment stroke in the embodiment is 0.2mm. If not satisfied, return to the step of installing and adjusting the reflecting mechanism 4, if satisfied, proceed to the subsequent step.
[0073] On the basis of the above-mentioned embodiments, reference is made to Figure 1 .
[0074] Specifically, the S4 step of installing the incident mirror group 2 includes:
[0075] S41: install the incident mirror group 2 on the optical path system frame 1 by multiple bolt fasteners with the same torque;
[0076] S42: test the alignment error of the incident mirror group 2 by using a centering instrument;
[0077] S43: loosen the bolt fasteners, and realize the same offset angle in the x direction as the eccentricity of the exit mirror group 3 by adjusting the position of the incident mirror group 2 in the x direction, so as to keep the optical axis alignment with the exit mirror group 3.
[0078] The difference between the offset amount of the incident mirror group 2 and the exit mirror group 3 is the alignment error of the incident mirror group 2 and the exit mirror group 3. The alignment deviation of the incident mirror group 2 and the exit mirror group 3 is divided into eccentricity and tilt error, and the integrated debugging can realize the eccentricity better than 5um and the tilt better than 10″.
[0079] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0080] The above describes in detail a four-degree-of-freedom decoupling mirror adjustment method provided by the present application. The principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.
Claims
1. A four-degree-of-freedom decoupled mirror assembly and adjustment method, characterized in that, Includes the following steps: Install the exiting mirror assembly (3): Use a centering instrument to align the optical axis mechanical reference of the exiting mirror assembly (3) in the optical path system frame (1) so that the center of the exiting mirror assembly (3) is aligned with the center of the centering instrument rotation axis system, and record the deviation data; Installation and adjustment of the reflection mechanism (4): The reflection mechanism (4) includes a reflector (41). The lens of the reflector (41) and the light incident direction and light outgoing direction of the optical path system are both tilted. The reflector (41) is located in the optical path system frame (1). After installation, the reflector (41) is orthogonally adjusted and moved along the first direction to align the outgoing light path of the reflection mechanism (4) with the outgoing mirror group (3). Verification and adjustment: Check or determine whether the alignment error of the optical path system meets the requirements. If not, return to the previous step. If yes, proceed to the next step. Mounting the incident lens group (2): The incident lens group (2) has a sliding adjustment amount along a second direction relative to the optical path system frame (1), the second direction being perpendicular to the first direction.
2. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 1, characterized in that, The step of installing the exiting mirror assembly (3) includes: The centering device distance sensor is used to test the outer circle reference and mounting end face reference of the exit mirror of the optical path system frame (1), realize the center deviation measurement between the centering device rotation axis system and the optical path system frame (1), test the deviation between the outer frame exit mirror mounting reference and the centering device rotation axis, and record the deviation data. Based on the measurement results, the system error in the centering and adjustment process of the optical path system frame (1) is separated. By analyzing and processing the measurement data, the centering and adjustment error of the output mirror group (3) is obtained.
3. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 2, characterized in that, The reflection mechanism (4) further includes a reflection frame (42), the reflection frame (42) and the optical path system frame (1) are slidably connected along a first direction, the reflector (41) is connected to the reflection frame (42), and the reflector (41) can be orthogonally adjusted relative to the reflection frame (42); The steps of installing and adjusting the reflective mechanism (4) include: The position of the reflective frame (42) on which the reflector (41) is installed is adjusted in the first direction, and the eccentricity in the first direction is measured by test to meet the system index requirements. The reflector (41) is tilted in two orthogonal degrees of freedom to achieve tilt angle alignment and complete the three-degree-of-freedom alignment of the orthogonal tilt direction and the first direction.
4. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 3, characterized in that, A guide rod (11) is fixedly connected inside the optical path system frame (1). The length direction of the guide rod (11) is the first direction. The guide rod (11) passes through the reflective frame (42). Fasteners are connected between the reflective frame (42) and the optical path system frame (1).
5. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 4, characterized in that, A first mounting frame (43) is rotatably mounted on the reflective frame (42), and a second mounting frame (44) is rotatably mounted on the first mounting frame (43). The rotation axis of the first mounting frame (43) and the rotation axis of the second mounting frame (44) are perpendicular to each other. The reflector (41) is mounted on the second mounting frame (44). The reflective frame (42) is provided with a first adjusting member (46) and a second adjusting member (47). The first adjusting member (46) is used to apply a pushing force or a pulling force to the first mounting frame (43), and the second adjusting member (47) is used to apply a pushing force or a pulling force to the second mounting frame (44).
6. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 5, characterized in that, Both the first adjusting member (46) and the second adjusting member (47) are push rods. The push rods slide relative to the reflective frame (42). The end of the first adjusting member (46) abuts against the first mounting frame (43), and the end of the second adjusting member (47) abuts against the second mounting frame (44). The abutment point of the second adjusting member (47) and the second mounting frame (44) is located near the rotation axis of the first mounting frame (43).
7. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 6, characterized in that, Both the first adjusting member (46) and the second adjusting member (47) are screws, and both the first adjusting member (46) and the second adjusting member (47) are threadedly connected to the reflective frame (42).
8. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 6 or 7, characterized in that, A hinge portion (45) is integrally formed between the reflective frame (42) and the first mounting frame (43), and between the first mounting frame (43) and the second mounting frame (44). The hinge portion (45) is elastic and serves as the pivot of the first mounting frame (43) or the second mounting frame (44).
9. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to any one of claims 3-7, characterized in that, The verification and adjustment steps include: Based on the test results, determine whether the relative tilt angle and the degree of freedom in the direction of movement of the reflector (41) and the output mirror group (3) meet the requirements. If not, return to the installation and adjustment of the reflector mechanism (4) step. If yes, proceed to the next step.
10. The four-degree-of-freedom decoupled mirror assembly and adjustment method according to claim 9, characterized in that, The step of installing the incident lens assembly (2) includes: The incident lens assembly (2) is mounted on the optical path system frame (1); By adjusting the position of the incident lens group (2) in the second mode direction, it is kept aligned with the optical axis of the exit lens group (3).