A mirror adjustment device and a method of assembling the same

Abstract

The application relates to a mirror adjusting device, which comprises a vertical mirror, a mirror supported and installed on a vertical mirror base through a third cushion block, a back plate assembled on the vertical mirror base, a fixing device for fixing the third cushion block to stabilize the mirror, a clamping device installed around the back plate, the mirror being clamped on an optical path through the clamping device, the clamping device comprising a first clamping device, a second clamping device and another second clamping device, first top beads and second top beads of the first clamping device being oppositely arranged and matched with the mirror, third top beads and fourth top beads of the second clamping device being oppositely arranged and matched with the mirror, and fifth top beads and sixth top beads of the other second clamping device being oppositely arranged and matched with the mirror. The mirror is clamped by the top beads to realize the fixation of the mirror surface, the control of the movement direction of the clamping points is realized through flexible hinges, the fine adjustment of the action on the clamping points is realized through a micrometer and a lever arm, and the deformation of the plane mirror can be corrected in a large-scale range.

Description

TECHNICAL FIELD

[0001] The present application relates to the clamping and face correction of a plane mirror, and more particularly to a mirror adjusting device and an assembling method thereof. BACKGROUND

[0002] In the light path processing of X-rays of the synchrotron radiation, mirrors are often used, which change the direction of X-rays, correct the shape of X-rays, or affect the phase of X-rays. Mirrors vary in shape according to different functions and requirements. Among them, a kind of mirror adopts an ultra-thin thickness to realize various processing of X-rays.

[0003] Because of the thin thickness, these mirrors often deform under the action of gravity and installation stress, affecting the imaging quality of the mirror.

[0004] Before online installation, the mirror of the synchrotron radiation often needs to be tested offline. Due to the thickness, the thin plane mirror often appears offline testing, and the face shape is corrected to perfect condition. However, during the online installation process, some unknown factors will have a great influence, so that the effect of offline correction is completely lost.

[0005] The thin mirror of the synchrotron radiation is very valuable, but the thickness is very thin, and it is easy to be damaged during transportation and handling due to factors such as vibration. SUMMARY

[0006] In order to solve the problems such as deformation of the thin plane mirror in the prior art, the present application provides a mirror adjusting device and an assembling method thereof.

[0007] The mirror adjusting device according to the present application comprises a vertical mirror, the vertical mirror comprises a mirror, a third cushion block, a clamping device, a fixing device, a vertical mirror base and a back plate, the mirror is supported and installed on the vertical mirror base through the third cushion block, the back plate is assembled on the vertical mirror base, the fixing device fixes the third cushion block to stabilize the mirror, the clamping device is installed around the back plate, the mirror is clamped on the light path through the clamping device, the clamping device comprises a first clamping device, a second clamping device and another second clamping device, wherein the first clamping device comprises a first top bead lever, a second top bead lever, a third top bead lever, a first support, a second support, a first clamping base and a first micrometer, wherein the first support and the second support are fixedly installed on the first clamping base at intervals, the first top bead lever is rotatably installed between the first support and the second support through a first flexible hinge, the second top bead lever is rotatably installed on the first support through a second flexible hinge, the third top bead lever is rotatably installed on the second support through a third flexible hinge, the first micrometer is installed on the first clamping base and is flexibly connected with the first, second and third top bead levers respectively, the first top bead lever comprises a first top bead installed on a first lever arm, the second and third top bead levers respectively comprise a second top bead installed on a second lever arm, the first top bead and the second top bead are oppositely arranged and cooperate with the mirror, wherein the second clamping device comprises a clamping block assembly, a third support, a second clamping base and a second micrometer, wherein the clamping block assembly comprises a first clamping block, a second clamping block and a clamping block screw, wherein the first clamping block is installed on the second clamping block through a fourth flexible hinge, the clamping block screw is installed on the first clamping block and penetrates the first clamping block to abut on the second clamping block to adjust the opening angle of the first clamping block and the second clamping block, the clamping block assembly is rotatably installed on the third support through a fifth flexible hinge, the third support is fixedly installed on the second clamping base, the second micrometer is installed on the second clamping base and is flexibly connected with the clamping block assembly, the first clamping block comprises a third top bead, the second clamping block comprises a fourth top bead installed on a third lever arm, the third top bead and the fourth top bead are oppositely arranged and cooperate with the mirror, wherein the other second clamping device comprises a third micrometer connected on a connecting rod, the tail of the connecting rod is provided with a U-shaped groove, one end of the U-shaped groove is provided with a fifth top bead, the other end of the U-shaped groove is provided with a through threaded hole, a top bead screw is assembled in the threaded hole, the top bead screw is provided with a sixth top bead, the fifth top bead and the sixth top bead are oppositely arranged and cooperate with the mirror.

[0008] Preferably, the first clamping device further comprises a first limiting locking device, a first lock ring and a second lock ring, wherein the first limiting locking device connects the first top bead lever and the first clamping base to lock the first top bead lever on the first clamping base, the first lock ring connects the second top bead lever and the first clamping base to lock the second top bead lever on the first clamping base, and the second lock ring connects the third top bead lever and the first clamping base to lock the third top bead lever on the first clamping base.

[0009] Preferably, the second clamping device further comprises a third locking ring and a fourth locking ring, wherein the third locking ring connects the first clamping block and the second clamping block to lock the opening and closing angle of the first clamping block and the second clamping block, and the fourth locking ring connects the second clamping block and the second clamping base to lock the second clamping block on the second clamping base.

[0010] Preferably, the vertical mirror is controlled by a second adjusting mechanism, and the second adjusting mechanism comprises a second adapter plate, a pitch motor, a second roll motor and a second translation motor, wherein the second adapter plate is connected with the vertical mirror, the pitch motor is connected with the second adapter plate to provide the vertical mirror with the freedom of pitching in the vertical plane, the second roll motor is connected with the pitch motor to provide the vertical mirror with the freedom of rolling in the plane perpendicular to the optical path, and the second translation motor is connected with the second roll motor to provide the vertical mirror with the freedom of moving in the vertical direction.

[0011] Preferably, the rotation axes of the pitch motor and the second roll motor coincide, and the center of the reflecting surface of the vertical mirror is located on the rotation axes of the pitch motor and the second roll motor.

[0012] Preferably, the fixing device is mounted on the back plate.

[0013] The assembling method of the above-mentioned mirror adjusting device according to the present application comprises the following steps: S1, assembling the first and second clamping devices respectively, for the first clamping device, when assembling the first, second and third flexible hinges, the opening between the first top bead and the second top bead is as large as possible, then the first and second lever arms and the first micrometer are coupled, and it is ensured that the maximum swing angle of the first and second lever arms will not exceed the stroke of the first, second and third flexible hinges within the stroke range of the first micrometer; for the second clamping device, the fifth flexible hinge is assembled after the fourth flexible hinge is assembled, then the third lever arm and the second micrometer are coupled, and it is ensured that the second micrometer travels to the midpoint of the stroke, and the fifth flexible hinge is assembled at this position; S2, the third micrometer is assembled on the back plate without being screwed, the back plate is assembled on the vertical mirror base, the connecting rod is coupled with the third micrometer, the connecting rod is mounted on the vertical mirror base, the third micrometer is screwed and fixed on the back plate, and the opening between the fifth top bead and the sixth top bead is kept in the maximum state; S3, the mirror and the third pad are placed on the vertical mirror base, and the mirror and the third pad are positioned by the three-point supporting device due to the action of gravity; the third micrometer is adjusted so that the fifth and sixth top beads do not touch the mirror surface of the mirror; S4, the fixing device is assembled on the back plate so that the mirror and the third pad are locked on the back plate; S5, the first and second clamping devices are assembled on the back plate, the first micrometer is adjusted so that the first and second top beads do not touch the mirror surface of the mirror, and the second micrometer is adjusted so that the third and fourth top beads do not touch the mirror surface of the mirror; S6, the mirror adjusting device is moved into the optical path; S7, the first, second and third micrometers are adjusted to correct the surface shape of the mirror.

[0014] Preferably, in the process of assembling the first and second clamping devices, the first, second, third, fourth and fifth flexible hinges are in the balanced position when the clamping jaws of the first and second clamping devices are in the fully open state, and the clamping jaws of the first and second clamping devices are fully closed without exceeding the travel range of the first, second, third, fourth and fifth flexible hinges.

[0015] Preferably, the opening between the third and fourth top beads is maximized by the elasticity of the fourth flexible hinge, and the third and fourth top beads are closed without exceeding the travel of the fourth flexible hinge.

[0016] Preferably, the second clamping device and the other second clamping device are mirror-symmetrical, and in the process of assembly, the third and fourth top beads act on the middle of one side of the mirror, and the fifth and sixth top beads act on the middle of the other side of the mirror.

[0017] The mirror adjusting device according to the present application fixes the mirror surface by clamping the mirror with top beads, controls the movement direction of the clamping point by flexible hinges, finely adjusts the force acting on the clamping point by the micrometer and the lever arm, and corrects the mirror surface by applying force to the clamping point. It can not only be used for short-distance transportation and protection of the mirror during long-distance transportation, but also can be used to correct the deformation of the mirror caused by gravity and stress in a large-scale range, and ensure the stability of the mirror surface during short-distance transportation and long-distance transportation. The mirror adjusting device according to the present application can correct the deformation of the thin mirror of the synchrotron radiation during installation and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the mirror adjusting device according to a preferred embodiment of the present application.

[0019] Figure 2 is an exploded view of the mirror adjusting device of Figure 1

[0020] Figure 3 is a structural schematic diagram of the horizontal mirror of Figure 2

[0021] Figure 4 is an exploded view of the horizontal mirror of Figure 3

[0022] Figure 5 is an exploded view of the first clamping device of Figure 4

[0023] Figure 6 is a structural schematic diagram of the first clamping device of Figure 5

[0024] Figure 7 is​​​​​Figure 6 Exploded view of the first clamping device of the

[0025] Figure 8 Figure 6 Another perspective view of the first clamping device of the

[0026] Figure 9 Figure 7 Side view of the first top bead lever of the

[0027] Figure 10 Figure 7 Side view of the second / third top bead lever of the

[0028] Figure 11 Flexible fixing of the micrometer to the lever arm is shown.

[0029] Figure 12 Figure 5 Structural view of the second clamping device of the

[0030] Figure 13 Exploded view of the second clamping device of the Figure 12

[0031] Assembly view of the clamp block assembly of the second clamping device of the Figure 14 Figure 12

[0032] Structural view of the first clamp block of the Figure 15 Figure 13 Structural view of the second clamp block of the

[0033] Figure 16 Figure 13

[0034] Figure 17 Figure 5 Structural view of the fixing device of the

[0035] Figure 18 Side view of the first clamping device of the Figure 5

[0036] Side view of the second clamping device of the Figure 19 Figure 5

[0037] Structural view of the vertical mirror of the Figure 20 Figure 2 Exploded view of the vertical mirror of the

[0038] Figure 21 Figure 20

[0039] Figure 22 Figure 21 ​​​​​​​​​​​​​​Exploded view of the second clamping device.

[0040] Figure 23 yes Figure 22 A schematic diagram of the structure of the second clamping device.

[0041] Figure 24 yes Figure 22 A schematic diagram of the structure of the vertical mirror base.

[0042] Figure 25 Show Figure 20 The initial assembly state of the vertical mirror. Detailed Implementation

[0043] The preferred embodiments of the present invention are given below with reference to the accompanying drawings and described in detail.

[0044] like Figure 1 As shown, a preferred embodiment of the reflector adjustment device according to the present invention includes a horizontal mirror 201 and a vertical mirror 207, both controlled by two sets of adjustment mechanisms, and both are mounted on the same device base 212. The horizontal mirror 201 is a vertically placed reflector mechanism, also known as an H-mirror, positioned in the optical path to modulate the horizontal properties of the incident X-rays. The vertical mirror 207 is a horizontally placed reflector mechanism, also known as a V-mirror, positioned in the optical path to modulate the vertical properties of the incident X-rays. The horizontal mirror 201 and the vertical mirror 207 are coupled together to act on the X-rays in all directions.

[0045] In this embodiment, the device base 212 serves as a base plate, providing a mounting platform for the horizontal mirror 201 and the vertical mirror 207, allowing the entire reflector adjustment device to be moved as a whole. Thus, the reflector, after offline testing and calibration, can be easily moved as a whole.

[0046] In this embodiment, the horizontal mirror 201 is controlled by a first adjustment mechanism, and the vertical mirror 207 is controlled by a second adjustment mechanism. The first and second adjustment mechanisms are evenly distributed to achieve stability and ease of use of the coupling between the horizontal mirror 201 and the vertical mirror 207.

[0047] like Figure 2 As shown, the first adjustment mechanism includes a first adapter plate 202 connected to the horizontal mirror 201, which has four positioning pins at its four corners. When the horizontal mirror 201 is installed on the first adapter plate 202, it can be firmly locked, so that the horizontal mirror 201 can be removed as a whole for offline calibration.

[0048] like Figure 2As shown in FIG. 2, the first adjusting mechanism further comprises a rotary motor 203 connected with the first adapter plate 202 and a first roll motor 204 connected with the rotary motor 203, so as to provide the horizontal mirror 201 with the freedom of rotating in the horizontal plane by the rotary motor 203 and the freedom of rolling in the plane perpendicular to the optical path by the first roll motor 204. In particular, the rotary motor 203 is a high-precision rotary motor with a minimum rate of 0.001 degree or above, which provides the mirror of the horizontal mirror 201 with a slight incident angle. In particular, when the horizontal mirror 201 is mounted on the first adapter plate 202, the center of the reflecting surface of the horizontal mirror 201 is just located on the rotary shaft of the rotary motor 203 and also on the rotary center of the first roll motor 204. In this embodiment, the error is controlled within 1 millimeter.

[0049] As shown in FIG. 2, the first adjusting mechanism further comprises a first translation motor 205 connected with the first roll motor 204, so as to provide the horizontal mirror 201 with the freedom of translating in the horizontal plane perpendicular to the optical path by the first translation motor 205, so that the horizontal mirror 201 can cut into or out of the optical path as needed. In this embodiment, the first translation motor 205 is a high-precision translation motor with a movement precision of micrometer level. Figure 2 As shown in FIG. 2, the first adjusting mechanism further comprises a first pad 206 connected with the first translation motor 205 and the device base 212, so as to accurately place the center of the reflecting surface of the horizontal mirror 201 on the optical path. In this embodiment, the error is ensured to be within 1 millimeter.

[0050] Figure 2 As shown in FIG. 2, the first adjusting mechanism further comprises a first pad 206 connected with the first translation motor 205 and the device base 212, so as to accurately place the center of the reflecting surface of the horizontal mirror 201 on the optical path. In this embodiment, the error is ensured to be within 1 millimeter.

[0051] It should be understood that, in order to ensure that the horizontal mirror 201 and the first adjusting mechanism can be easily moved into or out of the optical path as a whole according to the experimental requirements and maintain the calibrated posture, the mounting sequence of the horizontal mirror 201 and the first adjusting mechanism is fixed and cannot be adjusted.

[0052] As shown in FIG. 2, the second adjusting mechanism comprises a second adapter plate 208 connected with the vertical mirror 207, which is designed with four positioning pins at the four corners. When the vertical mirror 207 is mounted on the second adapter plate 208, it can be firmly locked, so that the vertical mirror 207 can be taken off as a whole for offline calibration. Figure 2 As shown in FIG. 2, the second adjusting mechanism comprises a second adapter plate 208 connected with the vertical mirror 207, which is designed with four positioning pins at the four corners. When the vertical mirror 207 is mounted on the second adapter plate 208, it can be firmly locked, so that the vertical mirror 207 can be taken off as a whole for offline calibration.

[0053] Figure 2 ​​As shown, the second adjustment mechanism also includes a pitch motor 209 connected to the second adapter plate 208 and a second roll motor 210 connected to the pitch motor 209. The pitch motor 209 provides the vertical mirror 207 with the degree of freedom to pitch in the vertical plane, and the roll motor 210 provides the vertical mirror 207 with the degree of freedom to roll in a plane perpendicular to the optical path. Specifically, the pitch motor 209 is a high-precision rotary motor with a minimum resolution of 0.001 degrees or higher, providing a slight angle of incidence for the reflector of the vertical mirror 207. Specifically, the rotation axes of the pitch motor 209 and the second roll motor 210 are completely coincident. Specifically, when the vertical mirror 207 is mounted on the second adapter plate 208, the center of the reflecting surface of the vertical mirror 207 is exactly located on the rotation axes of the pitch motor 209 and the second roll motor 210. In this embodiment, the error is controlled within 1 mm.

[0054] like Figure 2 As shown, the second adjustment mechanism also includes a second translational motor 211 connected to the second roll angle motor 210, thereby providing the vertical mirror 207 with the degree of freedom to move in the vertical direction, allowing the vertical mirror 207 to cut into or out of the optical path as needed. In this embodiment, the second translational motor 211 is a high-precision translational motor with a motion accuracy at the micrometer level.

[0055] It should be understood that, in order to ensure that the vertical mirror 207 and the second adjustment mechanism can be easily moved into or out of the optical path as needed after calibration, and to maintain the calibrated posture, the installation order of the vertical mirror 207 and the second adjustment mechanism is fixed and cannot be adjusted.

[0056] Horizontal mirror 201

[0057] like Figures 3-4 As shown, the horizontal mirror 201 includes a first reflecting mirror 201a, a second pad 201b, a horizontal mirror base 201c, and a first clamping device 201d. The first reflecting mirror 201a is mounted on the second pad 201b, then placed on the horizontal mirror base 201c, and finally fixed by the first clamping device 201d. Thus, the horizontally placed first reflecting mirror 201a is clamped and fixed. In this embodiment, the horizontal mirror base 201c has a three-point support device, and the first reflecting mirror 201a and the second pad 201b can be positioned by the three-point support device due to gravity.

[0058] like Figure 5As shown, the first clamping device 201d includes a first clamping device 301, second clamping devices 302 and 303, and a fixing device 304 mounted around the horizontal mirror base 201c. The first clamping device 301 is mounted at both ends of the horizontal mirror base 201c. The second clamping devices 302 and 303 are mirror-symmetrically mounted at the center of the horizontal mirror base 201c. The fixing device 304 is mounted on both sides of the second clamping devices 302 and 303 on the horizontal mirror base 201c, used to firmly fix the second pad 201b to the horizontal mirror base 201c, thereby stabilizing the first reflecting mirror 201a. The first clamping device 301 and the second clamping devices 302 and 303 can effectively adjust the overall curvature of the first reflecting mirror 201a over a large scale.

[0059] like Figure 6 As shown, the first clamping device 301 includes a first top ball lever 501, a second top ball lever 503, a third top ball lever 506, a first bracket 509, a second bracket 510, and a first clamping base 511, wherein the first clamping base 511 is mounted and fixed at both ends of the horizontal mirror base 201c (see...). Figure 5 The first bracket 509 and the second bracket 510 are fixedly mounted on the first clamping base 511 at a distance from each other. The first top ball lever 501 is rotatably mounted between the first bracket 509 and the second bracket 510. The second top ball lever 503 is rotatably mounted on the first bracket 509. The third top ball lever 506 is rotatably mounted on the second bracket 510.

[0060] like Figures 7-8 As shown, the first clamping device 301 also includes a first flexible hinge 502, which adopts a three-section design. Its two ends are respectively firmly fixed to the first bracket 509 and the second bracket 510, and the middle part passes through the first mounting hole 603 of the first top ball lever 501 (see...). Figure 9 Within. Thus, through the first flexible hinge 502, the first top ball lever 501 is allowed to rotate slightly along a predetermined trajectory. This rotation trajectory is highly accurate, and the first top ball lever 501 is not easily twisted during the entire rotation process.

[0061] like Figures 7-8 As shown, the first clamping device 301 also includes a second flexible hinge 504, which adopts a two-section design. The second top ball lever 503 is mounted on the first bracket 509 via the second flexible hinge 504. In addition, the first clamping device 301 also includes a first locking ring 505. After the posture of the second top ball lever 503 is adjusted, the first locking ring 505 tightly locks the second top ball lever 503 onto the first clamping base 511 to ensure its stability and accuracy.

[0062] likeFigures 7-8 As shown, the first clamping device 301 further comprises a third flexible hinge 507, which adopts a two-segment design, and the third top bead lever 506 is installed on the second support 510 through the third flexible hinge 507. In addition, the first clamping device 301 further comprises a second locking ring 508, which locks the third top bead lever 506 on the first clamping base 511 after adjusting the posture of the third top bead lever 506.

[0063] As shown in FIG. 4, the first clamping device 301 further comprises a first micrometer 512, which is a precision tool having a body and a telescopic head. The body is installed on the first clamping base 511, and the telescopic head is flexibly connected to the first top bead lever 501, the second top bead lever 503 and the third top bead lever 506, respectively. By adjusting the first micrometer 512, the fine rotation of the first top bead lever 501, the second top bead lever 503 and the third top bead lever 506 along the flexible hinge shaft can be accurately controlled, so as to realize high-precision adjustment and positioning. Figures 7-8 As shown in FIG. 4, the first clamping device 301 further comprises a first micrometer 512, which is a precision tool having a body and a telescopic head. The body is installed on the first clamping base 511, and the telescopic head is flexibly connected to the first top bead lever 501, the second top bead lever 503 and the third top bead lever 506, respectively. By adjusting the first micrometer 512, the fine rotation of the first top bead lever 501, the second top bead lever 503 and the third top bead lever 506 along the flexible hinge shaft can be accurately controlled, so as to realize high-precision adjustment and positioning.

[0064] Figure 9 As shown in FIG. 4, the first top bead lever 501 comprises a first top bead 601 and a first lever arm 604, wherein the first top bead 601 is installed on the lateral extension of the first lever arm 604. The first top bead 601 is made of stainless steel, with a diameter not less than 5 mm and a surface polished to a flatness of Ra0.1 to Ra0.4. The top end of the first lever arm 604 has a lever top point 602, and the upper top point of the first top bead 601 is located on the same horizontal plane as the lever top point 602. The top of the first lever arm 604 has a first mounting hole 603 for installing the first flexible hinge 502 (see FIG. 3), and the bottom of the first lever arm 604 has a first mounting position 605 for coupling the telescopic head of the first micrometer 512 (see FIG. 4). Figure 7 The upper top point of the first top bead 601 and the center of the first mounting hole 603 have a first distance (i.e. top bead action arm) 607, and the first mounting position 605 and the center of the first mounting hole 603 have a second distance (i.e. lever action arm) 608. The greater the ratio of the second distance 608 to the first distance 607, the more precise the control of the mirror surface of the first reflecting mirror 201a (see FIG. 2). In this embodiment, the ratio of the second distance 608 to the first distance 607 is greater than 5. Figure 7 Figure 3 As shown in FIG. 4, the first top bead lever 501 further comprises a first limit locking device 606 for locking the position of the first top bead lever 501. In this embodiment, the first limit locking device 606 is in the shape of a circular arc, and the center of the circular arc coincides with the center of the first mounting hole 603.

[0065] As shown in FIG. 4, the first top bead lever 501 further comprises a first limit locking device 606 for locking the position of the first top bead lever 501. In this embodiment, the first limit locking device 606 is in the shape of a circular arc, and the center of the circular arc coincides with the center of the first mounting hole 603. Figure 9 ​​​

[0066] The second top bead lever 503 and the third top bead lever 506 have the same structure, and the second top bead lever 503 is taken as an example for specific description below. As shown in Figure 10 The second top bead lever 503 includes a second top bead 701 and a second lever arm 703, wherein the second top bead 701 is installed on a lateral extension of the second lever arm 703. The second top bead 701 is made of stainless steel, with a diameter not less than 5 mm, and the surface is polished with a flatness between Ra0.1 and Ra0.4. The top of the second lever arm 703 has a second mounting hole 702 for mounting the second flexible hinge 504 (see Figure 7 ), and the bottom of the second lever arm 703 has a second mounting position 705 for coupling and mounting the telescopic head of the first micrometer 512 (see Figure 7 ). The lower vertex of the second top bead 701 and the center of the second mounting hole 702 are located on the same horizontal plane, the center of the second mounting hole 702 and the second mounting position 705 are located on the same vertical line, the lower vertex of the second top bead 701 and the center of the second mounting hole 702 have a third distance (i.e. top bead action arm) 706, and the second mounting position 705 and the center of the second mounting hole 702 have a fourth distance (i.e. lever action arm) 707. The ratio of the fourth distance 707 to the third distance 706 is the magnification effect of the lever, which can make the first micrometer 512 more accurately adjust the mirror surface. In the embodiment, the ratio of the fourth distance 707 to the third distance 706 is greater than 5.

[0067] As shown in Figure 10 , the second top bead lever 503 further includes a second limit locking device 704 for locking the position of the second top bead lever 503, for locking the second lever arm 703.

[0068] As shown in Figures 11As shown, the telescopic head of the first micrometer 512 is flexibly fixed on the lever arms 604, 703 of the first, second and third top bead levers 501, 503, 506, so that the telescopic head can push or pull back the lever arms, and also can rotate around the lever arms, but cannot be detached from the lever arms. The lever arms 604, 703 are provided with symmetrical semispherical recesses 801, and the two semispherical recesses 801 are connected by a through hole 802, and the telescopic head of the first micrometer 512 is provided with a semispherical head 806 with a threaded hole at the top. When the semispherical head 806 is placed in the semispherical recess 801, the ball 803 of the threaded rod 805 is inserted into the other semispherical recess 801, and the threaded rod 805 is inserted into the threaded hole of the semispherical head 806. The diameter of the threaded rod 805 is smaller than the diameter of the through hole 802. After installation, the ball 803 and the semispherical head 806 are moderately fixed at both ends of the through hole 802, so that the telescopic head of the first micrometer 512 can move the lever arms 604, 703 forward and backward, and also can rotate around the lever arms 604, 703.

[0069] As shown in Figures 12-14 , the second clamping devices 302, 303 respectively include a clamping block assembly 1011, a third bracket 1009, a second clamping base 1006 and a second micrometer 1010. The second clamping base 1006 is fixedly installed in the middle of the two sides of the horizontal mirror base 201c (see Figure 5 ), the third bracket 1009 is fixedly installed on the second clamping base 1006, the clamping block assembly 1011 is installed on the third bracket 1009, and the second micrometer 1010 is installed on the second clamping base 1006 and is flexibly connected with the clamping block assembly 1011. The clamping block assembly 1011 includes a first clamping block 1001, a second clamping block 1004, a fourth flexible hinge 1002 and a clamping block screw 1007. The first clamping block 1001 is installed on the second clamping block 1004 via the fourth flexible hinge 1002, the clamping block screw 1007 is installed on the first clamping block 1001 and is placed on the second clamping block 1004 through the first clamping block 1001, and the clamping block screw 1007 can adjust the opening angle of the first clamping block 1001 and the second clamping block 1004 by rotating. In this embodiment, the fourth flexible hinge 1002 is designed in three sections, and the two ends are installed on the first clamping block 1001 and the middle part is installed on the second clamping block 1004. In this embodiment, the top end of the clamping block screw 1007 is spherical. It should be understood that the second clamping devices 302, 303 are mirror-symmetrically designed, the third bracket 1009 and the clamping block assembly 1011 are completely the same in structure, the second clamping base 1006 is mirror-symmetrically designed, and the clamping block assembly 1011 is designed in different assembly modes to realize the mirror-symmetry of the second clamping devices 302, 303.

[0070] As shown in Figures 12-14As shown, the second clamping devices 302 and 303 also include a fifth flexible hinge 1008, which adopts a two-section design, with one end installed on the third bracket 1009 and the other end installed on the second clamping block 1004.

[0071] like Figures 12-14 As shown, the second clamping devices 302 and 303 also include a third locking ring 1003 and a fourth locking ring 1005, respectively. The third locking ring 1003 connects the first clamping block 1001 and the second clamping block 1004 to lock the opening and closing angle of the first clamping block 1001 and the second clamping block 1004. The fourth locking ring 1005 connects the second clamping block 1004 and the second clamping base 1006 to lock the second clamping block 1004 on the second clamping base 1006 after adjustment.

[0072] like Figure 15 As shown, the first clamping block 1001 includes a third top bead 1101, which is made of stainless steel, has a diameter of not less than 5 mm, and has a polished surface with a flatness between Ra0.1 and Ra0.4. The first clamping block 1001 has a third mounting hole 1102, and a clamping block screw 1007 (see...) Figure 14 The first clamping block 1001 is installed through the third mounting hole 1102. The first clamping block 1001 has a first locking hole 1103, and the third locking ring 1003 engages with the first locking hole 1103 to lock the opening angle of the first clamping block 1001 and the second clamping block 1004. The first clamping block 1001 has a fourth mounting hole 1104 for mounting the fourth flexible hinge 1002. When the first clamping block 1001 is placed horizontally, the center of the fourth mounting hole 1104 is on the same horizontal plane as the lower vertex of the third top bead 1101.

[0073] like Figure 16 As shown, the second clamping block 1004 includes a fourth top bead 1201 and a third lever arm 1202, wherein the fourth top bead 1201 is mounted on the lateral extension of the third lever arm 1202. The fourth top bead 1201 is made of stainless steel, with a diameter of not less than 5 mm, and its surface is polished with a flatness between Ra0.1 and Ra0.4. The top of the third lever arm 1202 has a fifth mounting hole 1205 and a sixth mounting hole 1206, wherein a fifth flexible hinge 1008 is installed through the fifth mounting hole 1205, thereby mounting the second clamping block 1004 on the third bracket 1009, and a fourth flexible hinge 1002 is installed through the sixth mounting hole 1206, thereby mounting the second clamping block 1004 on the first clamping block 1001. The bottom of the third lever arm 1202 has a third mounting position 1204 for coupling mounting of the telescopic head of the second micrometer 1010, the mounting method being as follows. Figure 11The third lever arm 1202 has a second locking hole 1203, and the fourth locking ring 1005 cooperates with the second locking hole 1203 to lock the swing arm angle of the second clamp block 1004. The upper vertex of the fourth top bead 1201, the center of the fifth mounting hole 1205 and the center of the sixth mounting hole 1206 are on a horizontal line. The front and back order of the three cannot be changed. At the same time, the center of the fifth mounting hole 1205 and the third mounting position 1204 are on the same plumb line.

[0074] As shown in Figure 17 , the fixing device 304 includes a fixing base 1302, which has a seventh mounting hole 1303 at the lower part, and the fixing base 1302 is fixed on the horizontal mirror base 201c (see Figure 5 ) through the seventh mounting hole 1303. The top of the fixing base 1302 is provided with a through threaded hole, and a locking bolt 1304 is assembled on the threaded hole. One end of the locking bolt 1304 is a hand wheel, and the other end is a locking piece 1301. In this embodiment, the locking piece 1301 is a high-density polytetrafluoroethylene sheet.

[0075] Horizontal mirror 201 assembly

[0076] The clamping devices 301, 302, and 303 are assembled respectively (see Figure 5 ). During assembly, pay attention to the angles of the flexible hinges 502, 504, 507, 1002, and 1008, so that when each flexible hinge 502, 504, 507, 1002, and 1008 is in the balanced position, the clamping openings of the clamping devices 301, 302, and 303 are in the fully open state. At the same time, after the clamping openings of the clamping devices 301, 302, and 303 are fully closed, they also do not exceed the travel range of each flexible hinge 502, 504, 507, 1002, and 1008.

[0077] As shown in Figure 18 , for the first clamping device 301, when assembling the flexible hinges 502, 504, and 507, make the opening between the first top bead 601 and the second top bead 701 as large as possible. Then assemble the lever arms 604 and 703 and the extension head of the first micrometer 512 to make them coupled. Test the device to ensure that within the travel range of the first micrometer 512, the maximum swing angle of the lever arms 604 and 703 does not exceed the travel of the flexible hinges 502, 504, and 507. At the maximum angle of the swing arm, lock the first limit locking device 606 and the locking ring 505 and 508.

[0078] As shown in Figure 19As shown, for the second clamping device 302, 303, first loosen the clamp screw 1007 completely, then assemble the fourth flexible hinge 1002, so that when the device is relaxed, the opening between the third and fourth top beads 1101, 1201 is maximized due to the elasticity of the fourth flexible hinge 1002. At the same time, when the third and fourth top beads 1101, 1201 are closed, they will not exceed the travel of the fourth flexible hinge 1002. At the position where the opening between the third and fourth top beads 1101, 1201 is maximized, lock the third lock ring 1003. Then assemble the fifth flexible hinge 1008. First couple the third lever arm 1202 and the extension head of the second micrometer 1010, then travel the second micrometer 1010 to the midpoint of its travel, and at this position assemble the fifth flexible hinge 1008. The effect of the assembly is that the balance position of the fifth flexible hinge 1008 is exactly the midpoint of the travel of the second micrometer 1010. At this time, lock the fourth lock ring 1005.

[0079] Referring to Figure 4 Place the first mirror 201a and the second spacer 201b on the horizontal mirror base 201c, which has three-point support devices, and the first mirror 201a and the second spacer 201b can be positioned by the three-point support devices due to the action of gravity.

[0080] Referring to Figure 5 Assemble the fixing device 304 on the horizontal mirror base 201c. Tighten the hand wheel of each of the four fixing devices 304 in turn and slowly. Loosen each locking bolt 1304 (see Figure 17 ) by 1 / 4 or 1 / 8 turn clockwise, until all the locking bolts 1304 are tightened. The first mirror 201a and the second spacer 201b are locked on the horizontal mirror base 201c.

[0081] Referring to Figure 5 Assemble the two first clamping devices 301 on the horizontal mirror base 201c. Note that the top beads 601, 701 will not touch the mirror surface of the first mirror 201a. If necessary, loosen the first limiting locking device 606 and the lock rings 505, 508, and adjust the first micrometer 512 so that the top beads 601, 701 are away from the mirror surface.

[0082] Referring to Figure 5 Assemble the second clamping device 302, 303 on the horizontal mirror base 201c. Note that the top beads 1101, 1201 will not touch the mirror surface of the first mirror 201a. If necessary, loosen the lock rings 1003, 1005, and adjust the second micrometer 1010 so that the top beads 1101, 1201 are away from the mirror surface. The second clamping device 302, 303 is mirror-symmetrical, and when assembled, the top beads 1101, 1201 act on the middle of the first mirror 201a.

[0083] Place the device under a laser interferometer.

[0084] Loosen the first position locking device 606 and the locking ring 505, 508, 1003, 1005.

[0085] Fine-tune each micrometer 512, 1010, according to the surface profile result fed back by the laser interferometer, to correct the surface profile of the first mirror 201a. For the second clamping device 302, 303, preferentially use the second micrometer 1010, slightly adhere the top bead 1201 to the first mirror 201a, and then rotate the clamping screw 1007 to make the top bead 1101 also slightly adhere to the first mirror 201a. Then fine-tune the second micrometer 1010 to correct the surface profile of the first mirror 201a.

[0086] After obtaining a suitable surface profile structure, lock the first position locking device 606 and the locking ring 505, 508, 1003, 1005.

[0087] Vertical mirror 207

[0088] As shown in Figures 20-21 , the vertical mirror 207 includes the second mirror 201e, the third pad 201f, the vertical mirror base 306, and the second clamping device 201g, wherein the second mirror 201e is installed on the third pad 201f, placed on the vertical mirror base 306, and finally fixed by the second clamping device 201g. In this way, the vertically placed second mirror 201e is clamped and fixed. In this embodiment, the vertical mirror base 306 has three-point support devices, and the second mirror 201e and the third pad 201f can be positioned by the three-point support devices due to gravity.

[0089] As shown in Figures 20-21 , the vertical mirror 207 also includes a back plate 305, which is assembled on the vertical mirror base 306 and has a gap between the second mirror 201e and the third pad 201f, without direct contact.

[0090] As shown in Figure 22 , the second clamping device 201g includes the first clamping device 301, the second clamping device 302, 303, and the fixing device 304, which are installed around the back plate 305, wherein the first clamping device 301 is installed at both ends of the back plate 305, the second clamping device 302 is installed on the back plate 305, the second clamping device 303 is installed on both the back plate 305 and the vertical mirror base 306, and the fixing device 304 is installed on the back plate 305 on both sides of the second clamping device 302 to fix the third pad 201f, thereby stabilizing the second mirror 201e and effectively adjusting the overall curvature of the second mirror 201e in a large range. The structure of the first clamping device 301 is as shown inFigures 6-11 and Figure 18 The structure of the second clamping device 302 is as shown in Figures 12-16 and Figure 19 The structure of the fixing device 304 is as shown in Figure 17 .

[0091] As shown in Figure 23 , the second clamping device 303 includes a third micrometer 401, the extension head of which is fixed on a connecting rod 402, the tail of which is equipped with a U-shaped groove 403 and a guide rail 404. One end of the U-shaped groove 403 is equipped with a fifth top bead 405. The other end of the U-shaped groove 403 has a through threaded hole, in which a top bead screw 406 is assembled. One end of the top bead screw 406 is a hand wheel, and the other end is a sixth top bead 407. In this embodiment, the fifth top bead 405 and the sixth top bead 407 are made of stainless steel, with a diameter not less than 5 mm, and the surface is polished to a flatness of Ra0.1 to Ra0.4.

[0092] As shown in Figure 24 , the top surface of the vertical mirror base 306 is provided with three positioning support balls 501, which are distributed in an isosceles triangle. The vertical mirror base 306 has a track groove 502 for accommodating the connecting rod 402 (see Figure 23 ). The vertical mirror base 306 also has a slide rail mounting hole 503 for mounting the guide rail 404 (see Figure 23 ).

[0093] Vertical mirror 207 assembly

[0094] As shown in Figure 25 , the third micrometer 401 is assembled on the back plate 305 without being tightened.

[0095] The back plate 305 is assembled on the vertical mirror base 306. Note that the third micrometer 401 is placed in the track groove 502 (see Figure 24 ) of the vertical mirror base 306.

[0096] The connecting rod 402 is inserted from the front of the track groove 502 (see Figure 24 ) of the vertical mirror base 306 and coupled with the third micrometer 401.

[0097] The connecting rod 402 is lightly screwed onto the vertical mirror base 306 with a screw. Rotate the third micrometer 401 to move the connecting rod 402, and correct the posture of the connecting rod 402 and the third micrometer 401 during the movement. Until there is no resistance, tighten the screw on the connecting rod 402.

[0098] Tighten the fixing screw of the third micrometer 401 to make it tightly fixed on the back plate 305. At this point, the second clamping device 303 composed of the third micrometer 401 and the connecting rod 402 is assembled.

[0099] Referring to Figure 23 Loosen the fifth top bead 405 and the sixth top bead 407 completely, and keep the opening in the maximum state.

[0100] Place the second mirror 201e and the third pad 201f on the vertical mirror base 306 from top to bottom. The vertical mirror base 306 has three-point support devices, and the second mirror 201e and the third pad 201f can be positioned by the three-point support devices due to gravity. During the placement process, pay attention to adjust the third micrometer 401 so that the fifth top bead 405 and the sixth top bead 407 do not touch the second mirror 201e.

[0101] Referring to Figure 25 , respectively, assemble the clamping devices 301, 302. During assembly, pay attention to the angle of the flexible hinges 502, 504, 507, 1002, 1008, so that when each flexible hinge 502, 504, 507, 1002, 1008 is in the balanced position, the clamping openings of the clamping devices 301, 302, 303 are in the fully open state. At the same time, after the clamping openings of the clamping devices 301, 302, 303 are fully closed, they also do not exceed the travel range of each flexible hinge 502, 504, 507, 1002, 1008.

[0102] As Figure 18 shown, for the first clamping device 301, when assembling the flexible hinges 502, 504, 507, make the opening between the first top bead 601 and the second top bead 701 as large as possible. Then assemble the lever arms 604, 703 and the telescopic head of the first micrometer 512 to make them coupled. Test the device to ensure that within the travel range of the first micrometer 512, the maximum swing angle of the lever arms 604, 703 does not exceed the travel of the flexible hinges 502, 504, 507. At the maximum angle of the swing arm, lock the first limit lock 606 and the lock ring 505, 508.

[0103] As Figure 19As shown, for the second clamping device 302, first loosen the clamp screw 1007 completely, then assemble the fourth flexible hinge 1002, so that when the device is relaxed, the opening between the third and fourth top beads 1101, 1201 is maximized due to the elasticity of the fourth flexible hinge 1002. At the same time, when the third and fourth top beads 1101, 1201 are closed, they will not exceed the travel of the fourth flexible hinge 1002. At the position where the opening between the third and fourth top beads 1101, 1201 is maximized, lock the third lock ring 1003. Then assemble the fifth flexible hinge 1008. First couple the third lever arm 1202 and the extension head of the second micrometer 1010, then travel the second micrometer 1010 to the midpoint of its travel, and at this position assemble the fifth flexible hinge 1008. The effect of the assembly is that the balance position of the fifth flexible hinge 1008 is exactly the midpoint of the travel of the second micrometer 1010. At this time, lock the fourth lock ring 1005.

[0104] Referring to Figure 25 Assemble the fixing device 304 on the back plate 305. Tighten the hand wheels of the two fixing devices 304 slowly in turn. Loosen each locking bolt 1304 (see Figure 17 ) clockwise by 1 / 4 or 1 / 8 turn each time until all the locking bolts 1304 are tightened. The second mirror 201e and the third spacer 201f are locked on the back plate 305.

[0105] Referring to Figure 25 Assemble the two first clamping devices 301 on the back plate 305. Note that the top beads 601, 701 will not touch the mirror surface of the second mirror 201e. If necessary, loosen the first limit stop device 606 and the lock rings 505, 508, and adjust the first micrometer 512 so that the top beads 601, 701 are away from the mirror surface.

[0106] Referring to Figure 5 Assemble the second clamping device 302 on the back plate 305. Note that the top beads 1101, 1201 will not touch the mirror surface of the second mirror 201e. If necessary, loosen the lock rings 1003, 1005, and adjust the second micrometer 1010 so that the top beads 1101, 1201 are away from the mirror surface. When assembled, the top beads 1101, 1201 are exactly acting on the middle of the second mirror 201e.

[0107] Place the device under the laser interferometer.

[0108] Loosen the first limit stop device 606 and the lock rings 505, 508, 1003, 1005.

[0109] The micrometers 512, 1010, 401 are adjusted according to the surface profile results from the laser interferometer feedback to correct the surface profile of the second mirror 201e. For the second clamping device 302, the second micrometer 1010 is used to slightly contact the top bead 1201 to the second mirror 201e, and then the clamping screw 1007 is rotated to slightly contact the top bead 1101 to the second mirror 201e. Then the second micrometer 1010 is adjusted to correct the surface profile of the first mirror 201a. For the second clamping device 303, the third micrometer 401 is used to slightly contact the fifth top bead 405 to the second mirror 201e, and then the top bead screw 406 is rotated to slightly contact the sixth top bead 407 to the second mirror 201e. The third micrometer 401 is adjusted to correct the surface profile of the second mirror 201e according to the results from the laser interferometer.

[0110] After the proper surface profile is obtained, the first limiting locking device 606 and the locking rings 505, 508, 1003, 1005 are locked.

[0111] The above description is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application. The above embodiment of the present application can be changed in various ways. Any simple, equivalent changes and modifications made according to the content of the claims and the description of the present application fall within the scope of the present application. The present application is not described in detail, and is conventional technical content.

Claims

1. A reflector adjustment device, characterized in that, The mirror adjustment device includes a vertical mirror, which comprises a mirror, a third pad, a clamping device, a fixing device, a vertical mirror base, and a back plate. The mirror is supported and mounted on the vertical mirror base by the third pad. The back plate is assembled on the vertical mirror base. The fixing device fixes the third pad to stabilize the mirror. The clamping device is mounted around the back plate, and the mirror is clamped in the optical path by the clamping device. The clamping device includes a first clamping device, a second clamping device, and another second clamping device. The first clamping device includes a first top ball lever, a second top ball lever, a third top ball lever, a first bracket, a second bracket, and a first clamping base. The first micrometer comprises a first bracket and a second bracket fixedly mounted on a first clamping base spaced apart from each other. A first top ball lever is rotatably mounted between the first and second brackets via a first flexible hinge. A second top ball lever is rotatably mounted on the first bracket via a second flexible hinge. A third top ball lever is rotatably mounted on the second bracket via a third flexible hinge. The first micrometer is mounted on the first clamping base and flexibly connects the first, second, and third top ball levers respectively. The first top ball lever includes a first top ball mounted on a first lever arm. The second and third top ball levers have the same structure. The second and third top ball levers each include a second top ball mounted on the second lever arm. The first and second top balls are arranged opposite each other and cooperate with the reflector. The second clamping device includes a clamping block assembly, a third bracket, a second clamping base, and a second micrometer. The clamping block assembly includes a first clamping block, a second clamping block, and a clamping block screw. The first clamping block is mounted on the second clamping block via a fourth flexible hinge. The clamping block screw is mounted on the first clamping block and passes through the first clamping block, pressing against the second clamping block to adjust the opening angle of the first and second clamping blocks. The clamping block assembly is rotatably mounted on the third bracket via a fifth flexible hinge. The frame is fixedly mounted on the second clamping base. The second micrometer is mounted on the second clamping base and flexibly connected to the clamping block assembly. The first clamping block includes a third top ball, and the second clamping block includes a fourth top ball mounted on the third lever arm. The third and fourth top balls are arranged opposite each other and cooperate with the reflector. Another second clamping device includes a third micrometer connected to a connecting rod. The tail of the connecting rod is equipped with a U-shaped groove. One end of the U-shaped groove is equipped with a fifth top ball, and the other end of the U-shaped groove has a through threaded hole. A top ball screw is installed in the threaded hole. The top ball screw has a sixth top ball. The fifth and sixth top balls are arranged opposite each other and cooperate with the reflector.

2. The mirror adjustment device according to claim 1, characterized in that, The first clamping device further includes a first limiting locking device, a first locking ring, and a second locking ring. The first limiting locking device connects the first top ball lever and the first clamping base to lock the first top ball lever on the first clamping base. The first locking ring connects the second top ball lever and the first clamping base to lock the second top ball lever on the first clamping base. The second locking ring connects the third top ball lever and the first clamping base to lock the third top ball lever on the first clamping base.

3. The mirror adjustment device according to claim 1, characterized in that, The second clamping device further includes a third locking ring and a fourth locking ring, wherein the third locking ring connects the first clamping block and the second clamping block to lock the opening and closing angle of the first clamping block and the second clamping block, and the fourth locking ring connects the second clamping block and the second clamping base to lock the second clamping block on the second clamping base.

4. The mirror adjustment device according to claim 1, characterized in that, The vertical mirror is controlled by a second adjustment mechanism, which includes a second adapter plate, a pitch motor, a second roll motor, and a second translation motor. The second adapter plate is connected to the vertical mirror, the pitch motor is connected to the second adapter plate to provide the vertical mirror with the degree of freedom to pitch in the vertical plane, the second roll motor is connected to the pitch motor to provide the vertical mirror with the degree of freedom to roll in the plane perpendicular to the optical path, and the second translation motor is connected to the second roll motor to provide the vertical mirror with the degree of freedom to move in the vertical direction.

5. The mirror adjustment device according to claim 4, characterized in that, The rotation axes of the pitch motor and the second roll motor coincide, and the center of the reflecting surface of the vertical mirror is located on the rotation axes of the pitch motor and the second roll motor.

6. The mirror adjustment device according to claim 1, characterized in that, The fixing device is installed on the back panel.

7. A method for assembling a reflector adjustment device according to any one of claims 1-6, characterized in that, The assembly method includes the following steps: S1, assemble the first and second clamping devices respectively. For the first clamping device, when assembling the first, second and third flexible hinges, the opening between the first and second top balls should be as large as possible. Then, couple the first and second lever arms and the first micrometer to ensure that within the stroke range of the first micrometer, the maximum swing angle of the first and second lever arms will not exceed the stroke of the first, second and third flexible hinges. For the second clamping device, after loosening the clamping block screw, assemble the fourth flexible hinge first, then couple the third lever arm and the second micrometer to ensure that the second micrometer travels to the midpoint of its stroke. At the midpoint, assemble the fifth flexible hinge. S2, assemble the third micrometer onto the back plate without tightening it, assemble the back plate onto the vertical mirror base, couple the connecting rod to the third micrometer, assemble the connecting rod onto the vertical mirror base, tighten and fix the third micrometer onto the back plate, and keep the opening between the fifth and sixth top beads at its maximum. S3, place the reflector and the third pad on the vertical mirror base. The reflector and the third pad are positioned by the three-point support device due to gravity. Adjust the third micrometer so that the fifth and sixth top beads do not touch the mirror surface. S4, assemble the fixing device onto the back plate so that the reflector and the third pad are locked onto the back plate; S5, assemble the first and second clamping devices onto the back plate, adjust the first micrometer so that the first and second top beads do not touch the mirror surface of the reflector, and adjust the second micrometer so that the third and fourth top beads do not touch the mirror surface of the reflector. S6, move the reflector adjustment device into the optical path; S7 adjusts the surface profile of the first, second, and third micrometer correction mirrors.

8. The assembly method according to claim 7, characterized in that, During the assembly of the first and second clamping devices, when the first, second, third, fourth, and fifth flexible hinges are in the balanced position, the jaws of the first and second clamping devices are in the fully open state, and even after the jaws of the first and second clamping devices are fully closed, they do not exceed the travel range of the first, second, third, fourth, and fifth flexible hinges.

9. The assembly method according to claim 7, characterized in that, The opening between the third and fourth top beads is maximized by the elasticity of the fourth flexible hinge, and the third and fourth top beads will not exceed the stroke of the fourth flexible hinge when they are closed.

10. The assembly method according to claim 7, characterized in that, The second clamping device and the other second clamping device are mirror symmetrical. During assembly, the third and fourth top beads act on the middle of one side of the reflector, and the fifth and sixth top beads act on the middle of the other side of the reflector.

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