Reflector fixing and adjusting device

Abstract

The invention provides a reflector fixing and adjusting device which comprises a reflector base used for fixing a reflector, a connecting base is arranged on the back face of the reflector base, an adjusting base is arranged in a cavity of an optical machine shell, elastic bases are arranged on the side walls of the reflector base and the adjusting base and connected through screw pins, the adjusting base covers the periphery of the connecting base, and a spring is arranged between the adjusting base and the connecting base. A mirror base adjusting rod is arranged on the adjusting base, an adjusting base adjusting rod is arranged on the machine shell top wall of the light machine machine shell, and a built-in limiting plate is arranged on the lower end face of the side wall of the machine shell. According to the invention, the translation of the adjusting seat can realize the translation of the normal of the reflecting mirror and the position of the adjusting operation of the deflection adjustment of the normal of the reflecting mirror on the back surface of the reflecting mirror, so that the problem of space limitation caused by narrow space on the side surface of the reflecting mirror is solved, and at least four-degree-of-freedom adjustment of the reflecting mirror in the narrow space is met.

Description

Technical Field

[0001] The invention relates to the fixing and adjusting of optical elements, and is suitable for the fixing and adjusting of optical elements such as reflectors. Technical Background

[0002] The position and posture of the reflector in the optical path of the optomechanical machine affect the optical quality of the entire optical path. To ensure the optical accuracy of the optomechanical system, two methods can be used: one is to use a high-precision fixed clamping device; the other is to use an adjustable clamping device with ordinary accuracy. High-precision fixed clamping devices mean high processing accuracy and high assembly accuracy. These requirements not only bring high manufacturing costs, but also the risk of unstable quality causing the system function to fail to be realized. Adjustable devices with ordinary accuracy do not have special requirements for the accuracy of processing equipment, and it is easy to obtain parts that meet the accuracy requirements; there are no special requirements for the assembly environment and assembly technicians. With the assistance of test equipment, it is easy to obtain a high-quality optical path by adjusting the position and posture of the reflector, thereby meeting the accuracy requirements of the optical system.

[0003] A Chinese patent document entitled “Lens Adjustment Mechanism and Optical Path System” (document number CN219039467U, hereinafter referred to as Document 1) discloses an adjustable solution for lenses, which includes a fixed seat, a lens seat, three adjustment members and at least one driving member. The driving member can be remotely controlled to drive the adjustment member to rotate, and the distance between the lens seat and the fixed seat at the installation position of the three adjustment members can be adjusted, thereby adjusting the normal angle of the lens installed on the lens seat, overcoming the problems of inconvenient operation and limited scope of application of existing lens adjustment.

[0004] The solution provided in Document 1 can certainly solve the specific problem that "due to the limited space at the installation position of the reflector, the bolt adjustment is restricted by space, the adjustment operation is inconvenient, and when the reflector is encapsulated inside the shell, the reflector cannot be adjusted, and the scope of application is limited." Document 1 also needs to set up motor-type drive parts, and multiple motors need to be set up, because each adjustment part actually needs to be adjusted independently, which undoubtedly increases the equipment investment. The installation of motor-type components also requires appropriate space guarantee, and the solution provided in Document 1 does not involve a typical solution for the translation of the reflector.

[0005] The device and method for positioning an axial support pad for a large-aperture reflector is named "A device and method for positioning an axial support pad for a large-aperture reflector" (document number CN114265177A, hereinafter referred to as Document 2). Document 2 discloses that in a first state, the axial support pad 8 is installed on the positioning ring 4 through the pre-tightening assembly. Under the action of the pre-tightening force of the pre-tightening assembly, the axial support pad 8 rests on the fine-tuning assembly 5. The axial support pad is positioned to the first target position by adjusting the fine-tuning assembly. After the first flat gasket 21, the spring 3 and the second flat gasket 22 are sequentially installed on the pre-tightening screw 1, the pre-tightening screw 1 is connected to the threaded hole on the outer peripheral wall of the axial support pad 8, thereby completing the assembly of the axial support pad 8 and the pre-tightening screw 1. At this time, the spring 3 is in a free length state. The fine-tuning component 5 and the pre-tightening screw 1 are arranged along the radial direction of the positioning ring 4, which requires that sufficient space for operation be reserved on the periphery of the positioning ring 4. For Document 2, since it belongs to the use scenario of a large-aperture reflector, its surrounding environment has sufficient operating space that can be utilized, and the solution it adopts also belongs to the category of simple structure and easy implementation.

[0006] The solution provided by the name of "six-degree-of-freedom adjustable optical device" (document number CN218675452U, hereinafter referred to as document 3) can also achieve the purpose of parallel translation of the normal of the reflector (10). The adjustment mechanism for achieving parallel translation of the normal of the translation reflector (10), namely, the translation adjustment component 40, includes a first translation unit 41, a second translation unit 42 and a third translation unit 43 which are stacked in sequence and adjacent to each other. Document 3 does not disclose the power source for the first translation unit 41, the second translation unit 42 and the third translation unit 43 to achieve translation, that is, Document 3 does not disclose the operating position and direction of the translation unit.

[0007] It can be seen that it is difficult to achieve multi-degree-of-freedom adjustment of the reflector in the optical path in a compact optical machine. The narrow space limits the layout of the adjustment mechanism, especially when there is insufficient operating space beside the mirror surface to implement the adjustment operation, or even when there is no space to set up the adjustment mechanism consisting of adjustment screws. Technicians must find new ways to solve the problem. Summary of the invention

[0008] The purpose of the present invention is to provide a reflector fixing and adjusting device to solve the problem that the space around the reflector in a compact optical machine is limited, which makes it difficult to set an adjustment mechanism around the reflector and difficult to implement the adjustment operation.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A reflector fixing and adjusting device, comprising a mirror seat for fixing the reflector, characterized in that: a connecting seat is provided on the back of the mirror seat, an adjustment seat is provided in a chamber of an optical machine housing, the adjustment seat surrounds the outer periphery of the connecting seat and a spring is provided between the two, and the spring provides elastic force to drive the reflector to move in the opposite direction of the normal line F of the reflector;

[0011] The side wall of the adjustment seat is connected to the elastic seat of the side wall of the optical machine housing by a screw pin, the axial direction of the screw pin is perpendicular to the normal line F of the reflector, and at least three of the screw pins are arranged within the circumferential range of the side wall of the housing;

[0012] The adjustment seat is provided with a mirror seat adjustment rod, the upper end of which is exposed on the outer wall side of the top wall of the housing, the lower end of which is in abutment with the back of the mirror seat, and the displacement direction of the mirror seat adjustment rod along its own rod length is parallel to the direction of the normal line F;

[0013] An adjustment seat adjustment rod is arranged on the top wall of the optical machine housing, and at least three adjustment seat adjustment rods are arranged within the circumferential range of the top wall of the housing. An oblique wedge fit is formed between the adjustment seat adjustment rod and the adjustment seat, and the displacement direction of the adjustment seat adjustment rod along its own rod length is parallel to the direction of the normal line F;

[0014] A built-in limit plate is provided at the lower end surface of the side wall of the casing, and the limit plate is located at the avoidance position of the incident light and reflected light paths of the reflector. When the adjustment rod of the adjustment seat is displaced, the lower end surface of the adjustment seat is driven to slide in contact with the limit surface of the limit plate, and the limit surface is perpendicular to the direction of the normal F.

[0015] The above scheme solves the problem of realizing multi-degree-of-freedom adjustment of the position and posture of the reflector in an optical machine with a narrow space, wherein the translation of the adjustment seat can realize the position adjustment of the reflector, which can be regarded as the translation of the normal F of the reflector on the one hand, and the deflection adjustment of the normal F of the reflector on the other hand; the positions of the translation of the normal of the reflector and the deflection adjustment of the normal of the reflector in the present invention are both located on the back of the reflector, which objectively solves the space limitation of the narrow space on the side of the reflector; the present invention can avoid the manufacture of high-precision reflector clamping devices, can reduce the stringent requirements on the assembly environment and assembly technicians, can eliminate the risk of optical machine function failure caused by unstable manufacturing and assembly quality, meet the requirements of at least 4 degrees of freedom adjustment of the reflector in a narrow space, and realize the requirements of fine-tuning or precise adjustment of the reflector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the appearance of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention;

[0018] Figure 3 is a sectional perspective view of the present invention;

[0019] Figure 4 It is a three-dimensional picture of the optical machine housing;

[0020] Figure 5 yes Figure 4 A magnified view of the K part;

[0021] Figure 6 It is a half-section stereoscopic schematic diagram of the elastic seat. DETAILED DESCRIPTION

[0022] For the convenience of explanation, it is first clarified that the marking reference of the reflector 1 is defined as the normal F of the reflector 1. The reflector 1 can be a plane reflector or a curved mirror with a large curvature. The normal F is located at the center of the reflective surface of the reflector 1. The normal F of the reflector 1 is simply referred to as the normal F. The definitions of the upper and lower directions and upper and lower positions of the relevant components in this application are expressed in the state where the normal F is downward. In actual use, the normal F can be arranged upward, horizontally, or obliquely. When the direction of the normal F changes, such as when the normal F is upward, the mirror seat 10 is located at the lower part of the reflector 1, and the upper and lower positional relationships of other components and the upper and lower positions can be adjusted accordingly. When the normal F points horizontally and forward to the observer, the mirror seat 10 is located behind the reflector 1, and the positional relationship of other relevant components can be understood as a front-rear and left-right relationship.

[0023] Combination Figure 1 , 2 3, the reflector fixing and adjusting device comprises a mirror seat 10 for fixing the reflector 1, a connecting seat 11 is provided on the back of the mirror seat 10, an adjustment seat 40 is provided in the chamber of the optical machine housing 30, the adjustment seat 40 is covered on the outer periphery of the connecting seat 11 and a spring 50 is provided between the two, and the spring 50 provides elastic force to drive the reflector 1 to move in the opposite direction of the normal line F of the reflector 1;

[0024] The above solution is to use the chamber space of the optical machine housing 30 to accommodate and arrange related components. The reflector 1 is first fixed on the mirror base 10, and the position relationship of the reflector 1 relative to the mirror base 10 is also determined accordingly. By adjusting the position and posture of the mirror base 10, the purpose of adjusting the position and posture of the reflector 1 is achieved.

[0025] The side wall 41 of the adjustment seat 40 is connected to the elastic seat 32 of the housing side wall 31a of the optical machine housing 30 by a screw pin 33. The axial direction of the screw pin 33 is perpendicular to the normal line F of the reflector 1. At least three screw pins 33 are arranged in the circumferential range of the housing side wall 31a. In the example shown in the figure, four screw pins 33 are arranged.

[0026] An elastic seat 32 is arranged on the side wall 31a of the optical machine housing 30. The elastic seat 32 provides elastic constraint support for the screw pin 33. Since the axial direction of the screw pin 33 is perpendicular to the normal F of the reflector 1, the threaded connection between the threaded section of the screw pin 33 and the side wall 41 of the adjustment seat 40 can be regarded as a rigid connection. When an external force drives the adjustment seat 40 to translate, the constraint between the elastic seat 32 and the nail head of the screw pin 33 elastically constrains and fixes the displacement of the screw pin 33 in its length direction, that is, the screw pin 33 first has the possibility of fine-tuning a short-distance displacement along its own length direction, and at the same time, the position after fine-tuning is stable and reliable.

[0027] The adjustment seat 40 is provided with a mirror seat adjustment rod 70, the upper end of which is exposed on the outer wall side of the housing top wall 31b, the lower end of which is in abutment with the back surface of the mirror seat 10, and the displacement direction of the mirror seat adjustment rod 70 along its own rod length is parallel to the direction of the normal line F;

[0028] When the rod core of the mirror base adjustment rod 70 is displaced in a direction parallel to the normal F, the position and posture of the adjustment seat 40 are adjusted to the set requirements. The upper end of the mirror base adjustment rod 70 is exposed on the top wall 31b of the casing and the exposed end is in order to facilitate the adjustment operation. The lower end of the mirror base adjustment rod 70 is in abutment with the back side of the mirror base 10. The axial direction of the mirror base adjustment rod 70 is generally parallel to the design direction of the normal F. During adjustment, there may be a small angle between the axial direction of the mirror base adjustment rod 70 and the design direction of the normal F, or there may be a small angle between the axial direction of the mirror base adjustment rod 70 and the normal F when the normal F is adjusted to the design direction. The adjustment of the mirror base adjustment rod 70 ensures that the normal F is in the correct posture to receive the incident light and provide the reflected light that meets the requirements.

[0029] An adjustment seat adjustment rod 60 is arranged on the casing top wall 31b of the optical machine casing 30, and at least three adjustment seat adjustment rods 60 are arranged within the circumferential range of the casing top wall 31b. An oblique wedge fit is formed between the adjustment seat adjustment rod 60 and the adjustment seat 40, and the displacement direction of the adjustment seat adjustment rod 60 along its own rod length is parallel to the direction of the normal F; the driving force of the adjustment seat 40, which is the basis for position adjustment of the mirror seat 10, comes from the oblique wedge fit formed between the adjustment seat adjustment rod 60 and the adjustment seat 40, that is, the adjustment purpose of the adjustment seat adjustment rod 60 is achieved by the rod core of the adjustment seat adjustment rod 60 being along the direction parallel to the normal F, and by means of the oblique wedge fit between the two, the adjustment seat 40 obtains the displacement power in the direction perpendicular to the normal F, and the elastic seat 32 on the casing side wall 31a of the optical machine casing 30 is transmitted to the elastic constraint of the adjustment seat 40 via the screw pin 33, and the adjustment seat 40 is reliably and stably displaced to the set position.

[0030] A built-in limit plate 20 is provided at the lower end surface of the side wall 31a of the casing, and the limit plate 20 is located in the avoidance position of the incident light and reflected light paths of the reflector 1. When the adjustment seat adjustment rod 60 is displaced, the lower end surface of the adjustment seat 40 is driven to slide in a fitted manner with the limit surface 211 of the limit plate 20, and the limit surface 211 is perpendicular to the direction of the normal F.

[0031] Under the limiting action of the limit plate 20 and the component force perpendicular to the direction of the normal line F applied to the adjustment seat 40 by the adjustment seat adjusting rod 60, the lower end surface of the adjustment seat 40 is driven to form a fitting sliding fit with the limit plate 20. It can also be said that the fitting surface between the limit plate 20 and the lower end surface of the adjustment seat 40 is perpendicular to the direction of the normal line F.

[0032] The technical solution provided by the present invention solves the problem that the adjustment structure and operation position of the position and posture of the reflector 1 are both located in the external space area of ​​the optical machine housing 30 in the opposite direction of the normal F, thereby solving the limitation that there is no operating space on the surrounding side of the optical machine housing 30 perpendicular to the direction of the normal F.

[0033] Preferably, the upper end of the connecting seat 11 has a spring seat plate 112, the spring 50 is a compression spring, and the upper end of the spring 50 is against the spring seat plate 112, and the lower end of the spring 50 is pressed on the adjustment seat 40. With the adjustment seat 40 as a reference, under the elastic constraint provided by the spring 50, when the mirror seat adjustment rod 70 is adjusted, the connecting seat 11, the mirror seat 10 and the reflector 1 are adjusted synchronously, that is, the normal line F is adjusted, see Figure 1 , 2 、3.

[0034] like Figure 1 , 2 3, the spring seat plate 112 is a disc-shaped plate with a through hole in the middle for the connecting screw 113 to pass through, the connecting seat 11 has a threaded pipe section 111 extending upward and in the opposite direction of the normal F, the threaded section of the connecting screw 113 is connected to the threaded pipe section 111, and the spring 50 is sleeved on the outer periphery of the threaded pipe section 111.

[0035] The spring seat plate 112 is connected to the connecting seat 11 by means of connecting screws 113. The upper end of the spring 50 contacts the lower plate surface of the spring seat plate 112. Under the elastic force of the spring 50, the connecting seat 11, together with the mirror base 10 and the reflector 1, tends to move synchronously in the opposite direction to the normal line F.

[0036] like Figure 1 , 2As shown in Figures 3, 4, the optical machine housing 30 is a barrel-shaped body with the barrel mouth facing downward, and there is a through hole 31c in the middle of the housing top wall 31b for the spring 50 to pass through up and down. Since the through hole 31c is for the spring 50 to pass through up and down, the radial dimensions of the spring seat plate 112, the connecting screw 113 and the connecting seat 11 are all smaller than the aperture of the through hole 31c, so as to ensure the free displacement adjustment of the spring seat plate 112, the connecting screw 113 and the connecting seat 11 in the positive and negative directions of the normal line F. Since the mirror seat adjustment rod 70 needs to be convenient for adjustment operation, the mirror seat adjustment rod 70 also needs to extend upward from the hole range of the through hole 31c, as shown in Figure 3. Figures 1 to 4 As shown, there is a notch on the edge of the through hole 31c and its shape is semicircular or U-shaped.

[0037] like Figures 1 to 6 As shown, the elastic seat 32 includes annular rings 321 arranged radially from the inside to the outside, the inner and outer adjacent annular rings 321 are connected by a radial connecting portion 322, the inner and outer radial connecting portions 322 of the same annular ring 321 are arranged in a circumferentially staggered manner, and the outermost annular ring 321 is connected to the casing side wall 31a by the radial connecting portion 322.

[0038] It can also be understood that the interval area between the two adjacent inner and outer annular rings 321 constitutes a C-shaped annular cavity, and the radial connecting portion 322 separates the ends of the same C-shaped annular cavity, thereby forming an elastic seat 32. During specific processing, a C-shaped annular cavity can be cut out on the side wall 31a of the housing, thereby reserving radial connecting portions 322 at both ends of the cavity in the circumferential direction, and the C-shaped annular cavity is cut out successively from the inside to the outside, and the radial connecting portion 322 is reserved on the opposite side, and the innermost annular ring 321 is surrounded to form a complete circular hole. The shaft section of the outer section of the screw pin 33 is inserted and matched, and the threaded section of the inner section of the screw pin 33 is screwed on the threaded hole on the side wall 41 of the adjustment seat 40. During assembly, it is first necessary to ensure that the screw pin 33 is connected to the threaded hole on the side wall 41 to a degree that the elastic seat 32 has a pre-tightened position that is deformed to an appropriate position inside the side wall 41. In this way, it can be finally ensured that when the normal F of the reflector 1 is adjusted to the final appropriate position, each elastic seat 32 is still in a pre-tightened state, thereby ensuring that the position and posture of the reflector 1 are reliable and stable.

[0039] Preferably, the connecting line of the radial connecting portion 322 passes through the center of the annular ring 321. Figure 5 , 6As shown, the annular ring 321 is provided with 5 circles, and the 2 radial connecting parts 322 at the upper part and the 3 radial connecting parts 322 at the lower part are collinear and located in the vertical direction, thus ensuring that the deformation amount of each annular ring 321 is uniform during deformation, so as to ensure that the elastic force applied by the elastic seat 32 to the screw pin 33 is coaxial with the screw pin 33, that is, ensuring that the elastic constraint force applied by the elastic seat 32 to the adjustment seat 40 is parallel to the limiting surface 211 of the limiting plate 20, and the position of the adjustment seat 40 on the surface defined by the limiting surface 211 is stable and reliable.

[0040] like Figure 4 , 5 As shown in Figures 6 and 7, the optical machine housing 30 is in the shape of a barrel with the barrel mouth facing downward, and the ring surface of the annular ring 321 is coplanar with the housing side wall 31a. This solution can be understood as that the annular ring 321 is directly opened on the housing side wall 31a. For example, the barrel-shaped optical machine housing 30 is first processed, and a C-shaped annular cavity is processed on the housing side wall 31a by wire cutting or milling. The inner and outer side wall solid parts of the cavity naturally reserve the annular ring 321, and the radial connection parts 322 are naturally constructed at the two end partitions of the C-shaped annular cavity. In this way, it is not only easy to ensure the hole core position of the innermost annular ring 321, but also avoids the problem of complex assembly work and difficult positioning control of processing the elastic seat separately and then connecting it to the housing side wall 31a of the optical machine housing 30.

[0041] like Figure 2 , 3 As shown, the circle hole of the annular ring 321 at the center is for the screw pin 33 to pass through, and the inner threaded section of the screw pin 33 is connected to the threaded hole on the side wall 41 of the adjustment seat 40; Figure 5 , 6 As shown, the hole of the innermost annular ring 321 is a light hole and is only for the optical axis section of the screw pin 33 to fit in a sleeve-like manner, and only the threaded section of the inner section of the screw pin 33 is threadedly connected to the side wall 41 of the adjustment seat 40. In this way, it is ensured that the degree of threaded connection between the screw pin 33 and the side wall 41 of the adjustment seat 40 during initial installation needs to reach a pre-tightened deformation state in which the elastic seat 32 moderately tends inward toward the side wall 41 of the adjustment seat 40. In this way, it is ensured that all elastic seats 32 apply an adjustable stable constraint perpendicular to their normal F to the reflector 1.

[0042] The mirror base 10 is in the shape of a barrel with the barrel mouth facing downwards, the reflector 1 is fixed in the barrel cavity of the mirror base 10, and the reflective surface 1a of the reflector 1 is protruding below the mirror base 10, and the reflective surface 1a of the reflector 1 is a circular area. The use of the barrel-shaped mirror base 10 can achieve reliable fixation of the reflector 1, and conveniently reserve the light beam transmission space of the incident light and the reflected light of the reflective surface 1a, and also provide a suitable position for the constraint and fixation of the mirror base 10, especially the bottom of the barrel is located on the back of the reflective surface 1a and is used as the force-bearing position for adjustment, and these force-bearing positions during adjustment avoid the narrow space limitation beside the reflective surface 1a.

[0043] like Figure 1 , 2 As shown in Figure 3, the adjustment seat 40 is in the shape of a barrel with the barrel mouth facing downward, the limiting plate 20 is in the shape of a flange, and the convex ring 21 at the inner hole edge is inserted into the barrel mouth at the lower end of the optical machine case 30, the outer disk surface of the limiting plate 20 and the external flange edge 31d at the lower end of the case side wall 31a are flange-connected, and the barrel mouth end face of the adjustment seat 40 is pressed onto the upper end face of the convex ring 21 of the limiting plate 20, and the upper end face of the convex ring 21 constitutes a limiting surface 211. The cylindrical shape of the adjustment seat 40 is consistent with the shape of the mirror base 10, so that the adjustment seat 40 can be covered on the outer periphery of the mirror base 10, and the working surface of the reflector 1 is avoided to be blocked, ensuring that the reflector 1 normally receives the incident light and reflects the light beam. At the same time, the end face of the adjustment seat 40 and the limit plate 20 are used to cooperate to limit the translation surface of the adjustment seat 40. Similarly, the seat top 42 of the adjustment seat 40 located on the back side of the mirror surface of the reflector 1 is used to set the mirror base adjustment rod 70, so that the operation of adjusting the posture of the mirror base 10 is located on the back side of the reflector 1.

[0044] like Figure 1 , 2 As shown in Figure 3, the adjustment seat 40 is in the shape of a barrel with the barrel mouth facing downward, and the seat top 42 and the side wall 41 are transitionally connected by a conical transition surface 43. The adjustment seat adjustment rod 60 is screwed on the threaded hole of the housing top wall 31b, and the ball-shaped lower end of the adjustment seat adjustment rod 60 is placed on the conical transition surface 43 to form an oblique wedge fit. At least three adjustment seat adjustment rods 60 are provided within the circumferential range of the conical transition surface 43, and preferably 3 to 4 are provided. The conical transition surface 43 is provided between the seat top 42 and the side wall 41 to implement the transition. The conical transition surface 43 is in the shape of a truncated cone with a small cross section at the top and a large cross section at the bottom, which not only obtains an oblique wedge fit structure that cooperates with the adjustment seat adjustment rod 60, but also ensures that the translation adjustment operation of the adjustment seat 40 is located at the back of the reflector 1.

[0045] The technical solution provided by the present invention realizes that all operations of adjusting the posture and position of the normal line F of the reflector 1 are completed in the space area on the back of the reflector 1, solving the problem that there is no adjustment operation space or the operation space is severely limited on the side of the reflector 1. In the example shown in the figure, at least four adjustment seat adjustment rods 60 are provided within the circumferential range of the conical transition surface 43, so that the position of the normal line F of the reflector 1 can be quickly adjusted, and the normal line F of the reflector 1 can be stably adjusted to the adjustment position under the elastic constraint applied to the adjustment seat 40 by the elastic seat 32.

[0046] The solution provided in the present application can achieve five-degree-of-freedom adjustment of the normal line F of the reflector 1 along the translation in the XY plane, the displacement in the Z direction, and the rotation around the X and Y axes.

Claims

1. A reflector fixing and adjusting device, comprising a mirror seat (10) for fixing a reflector (1), characterized in that: A connecting seat (11) is provided on the back of the mirror seat (10), an adjusting seat (40) is arranged in the chamber of the optical machine housing (30), the adjusting seat (40) surrounds the outer periphery of the connecting seat (11) and a spring (50) is arranged between the two, and the spring (50) provides elastic force to drive the reflector (1) to move in the opposite direction of the normal line F of the reflector (1); The side wall (41) of the adjustment seat (40) is connected to the elastic seat (32) of the housing side wall (31a) of the optical machine housing (30) by a screw pin (33), the axial direction of the screw pin (33) is perpendicular to the normal line F of the reflector (1), and at least three screw pins (33) are arranged within the circumferential range of the housing side wall (31a); A mirror seat adjustment rod (70) is provided on the adjustment seat (40), the upper end of the mirror seat adjustment rod (70) is exposed on the outer wall side of the housing top wall (31b), the lower end is in abutment with the back surface of the mirror seat (10), and the displacement direction of the mirror seat adjustment rod (70) along its own rod length is parallel to the direction of the normal line F; An adjustment seat adjustment rod (60) is arranged on the housing top wall (31b) of the optical machine housing (30); at least three adjustment seat adjustment rods (60) are arranged within the circumferential range of the housing top wall (31b); an oblique wedge fit is formed between the adjustment seat adjustment rod (60) and the adjustment seat (40); and the displacement direction of the adjustment seat adjustment rod (60) along its own rod length is parallel to the direction of the normal line F; A built-in limit plate (20) is arranged at the lower end surface of the housing side wall (31a), and the limit plate (20) is located at an avoidance position of the incident light and reflected light paths of the reflector (1). When the adjustment seat adjusting rod (60) is displaced, the lower end surface of the adjustment seat (40) is driven to slide in a close-fitting manner with the limit surface (211) of the limit plate (20), and the limit surface (211) is perpendicular to the direction of the normal line F.

2. The reflector fixing and adjusting device according to claim 1, characterized in that: A spring seat plate (112) is provided at the upper end of the connecting seat (11); the spring (50) is a compression spring, the upper end of the spring (50) abuts against the spring seat plate (112), and the lower end of the spring (50) is pressed on the adjustment seat (40).

3. The reflector fixing and adjusting device according to claim 2, characterized in that: The spring seat plate (112) is in the shape of a disk with a through hole in the middle for the connecting screw (113) to pass through. The connecting seat (11) is provided with a threaded pipe section (111) extending in the opposite direction of the normal line F. The threaded section of the connecting screw (113) is connected to the threaded pipe section (111). The spring (50) is sleeved on the outer periphery of the threaded pipe section (111).

4. The reflector fixing and adjusting device according to claim 2 or 3, characterized in that: The optical machine housing (30) is a barrel-shaped body with the barrel mouth facing downwards, and a through hole (31c) is provided in the middle of the housing top wall (31b) for the spring (50) to pass through up and down.

5. The reflector fixing and adjusting device according to claim 1, characterized in that: The elastic seat (32) comprises annular rings (321) arranged radially from the inside to the outside, the inner and outer adjacently arranged annular rings (321) are connected by a radial connecting portion (322), the inner and outer radial connecting portions (322) of the same annular ring (321) are arranged in a circumferentially staggered manner, and the outermost annular ring (321) is connected to the housing side wall (31a) by the radial connecting portion (322).

6. The reflector fixing and adjusting device according to claim 5, characterized in that: The connecting line of the radial connecting portion (322) passes through the center of the annular ring (321).

7. The reflector fixing and adjusting device according to claim 5, characterized in that: The optical machine housing (30) is in the shape of a barrel with the barrel mouth facing downwards, and the ring surface of the annular ring (321) is coplanar with the housing side wall (31a).

8. The reflector fixing and adjusting device according to claim 5, 6 or 7, characterized in that: The circle hole of the annular ring (321) at the center is used for the screw pin (33) to pass through, and the inner threaded section of the screw pin (33) is connected to the threaded hole on the side wall (41) of the adjustment seat (40).

9. The reflector fixing and adjusting device according to claim 1 or 2 or 3 or 7, characterized in that: The mirror base (10) is in the shape of a barrel with its mouth facing downwards; the reflector (1) is fixed in the barrel cavity of the mirror base (10) and a reflective surface (1a) of the reflector (1) protrudes below the mirror base (10); the reflective surface (1a) of the reflector (1) is a circular area.

10. The reflector fixing and adjusting device according to claim 1 or 2 or 3 or 7, characterized in that: The adjustment seat (40) is in the shape of a barrel with the barrel mouth facing downwards, the limiting plate (20) is in the shape of a flange disk, and the convex ring (21) at the inner hole edge is inserted into the barrel mouth at the lower end of the optical machine housing (30), the outer disk surface of the limiting plate (20) and the external flange edge (31d) at the lower end of the housing side wall (31a) form a flange connection, the barrel mouth end surface of the adjustment seat (40) is pressed on the upper end surface of the convex ring (21) of the limiting plate (20), and the upper end surface of the convex ring (21) forms a limiting surface (211).

11. The reflector fixing and adjusting device according to claim 1, characterized in that: The adjustment seat (40) is in the shape of a barrel with its mouth facing downwards. The seat top (42) and the side wall (41) are transitionally connected by a conical transition surface (43). The adjustment seat adjustment rod (60) is screwed onto the threaded hole of the housing top wall (31b). The ball-shaped lower end of the adjustment seat adjustment rod (60) is placed on the conical transition surface (43) to form an oblique wedge fit. At least three adjustment seat adjustment rods (60) are arranged within the circumferential range of the conical transition surface (43).

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