Reflector adjusting device and assembling method thereof

Abstract

The invention relates to a reflecting mirror adjusting device which comprises a vertical mirror, a reflecting mirror is supported and installed on a vertical mirror base through a third cushion block, a back plate is assembled on the vertical mirror base, a fixing device fixes the third cushion block to stabilize the reflecting mirror, a clamping device is installed around the back plate, and the reflecting mirror is clamped on a light path through the clamping device. The clamping device comprises a first clamping device, a second clamping device and another second clamping device, a first top bead and a second top bead of the first clamping device are oppositely arranged and matched with the reflecting mirror, and a third top bead and a fourth top bead of the second clamping device are oppositely arranged and matched with the reflecting mirror. And the fifth top bead and the sixth top bead of the other second clamping device are oppositely arranged and are matched with the reflecting mirror. The mirror surface is fixed by clamping the reflecting mirror through the top bead, the movement direction of a clamping point is controlled through the flexible hinge, the action of the clamping point is finely adjusted through the micrometer and the lever arm, and the deformation of the plane mirror can be corrected in a large-scale range.

Description

Technical Field

[0001] The invention relates to the clamping and surface correction of a plane mirror, and more specifically to a reflector adjustment device and an assembly method thereof. Background Art

[0002] In the process of synchrotron radiation processing the optical path of X-rays, reflectors are often used. These reflectors either change the direction of X-rays, correct the shape of X-rays, or affect the phase of X-rays. Reflectors have different shapes according to their functions and needs. Among them, one type of reflector uses ultra-thin thickness to achieve various processing of X-rays.

[0003] Because these reflectors are relatively thin, they often undergo unknown deformations under the influence of gravity and installation stress, affecting the imaging quality of the mirrors.

[0004] Before the mirrors of synchrotron radiation are installed online, they often need to be tested offline. Thin plane mirrors often need offline testing due to their thickness, and the surface shape is perfect after correction. However, during the online installation process, some unknown factors will have a great impact, thus completely losing the effect of offline correction.

[0005] The thin mirrors of synchrotron radiation are very valuable, but they are very thin and can be easily damaged due to vibration and other factors during transportation and handling. Summary of the invention

[0006] In order to solve the above problems of deformation of thin plane mirrors in the prior art, the present invention provides a reflector adjustment device and an assembly method thereof.

[0007] According to the reflector adjustment device of the present invention, it includes a vertical mirror, and the vertical mirror includes a reflector, a third pad, a clamping device, a fixing device, a vertical mirror base and a back plate. The reflector is supported and installed on the vertical mirror base through the third pad, and the back plate is assembled on the vertical mirror base. The fixing device fixes the third pad to stabilize the reflector. The clamping device is installed around the back plate. The reflector is clamped on the optical path by the clamping device. The clamping device includes a first clamping device, a second clamping device and another second clamping device, wherein the first clamping device includes a first top ball lever, a second top ball lever, a third top ball lever, a first bracket, The second bracket, the first clamping base and the first micrometer, wherein the first bracket and the second bracket are fixedly installed on the first clamping base at a distance from each other, the first top ball lever is rotatably installed between the first bracket and the second bracket through a first flexible hinge, the second top ball lever is rotatably installed on the first bracket through a second flexible hinge, the third top ball lever is rotatably installed on the second bracket through a third flexible hinge, the first micrometer is installed on the first clamping base and flexibly connected to the first, second and third top ball levers respectively, the first top ball lever includes a first top ball installed on the first lever arm, and the second and third top ball levers are rotatably installed on the second bracket. The ball levers respectively include a second top bead mounted on the second lever arm, the first top bead and the second top bead are arranged opposite to each other and cooperate with the reflector, wherein the second clamping device includes a clamping block assembly, a third bracket, a second clamping base and a second micrometer, wherein the clamping block assembly includes a first clamping block, a second clamping block and a clamping block screw, wherein the first clamping block is mounted on the second clamping block through a fourth flexible hinge, the clamping block screw is mounted on the first clamping block and passes through the first clamping block to press on the second clamping block to adjust the opening and closing angles of the first clamping block and the second clamping block, and the clamping block assembly is rotatably mounted on the third bracket through a fifth flexible hinge, and the third bracket is fixed Installed on the second clamping base, the second micrometer is installed on the second clamping base and is flexibly connected to the clamping block assembly, the first clamping block includes a third top bead, the second clamping block includes a fourth top bead installed on the third lever arm, the third top bead and the fourth top bead are arranged opposite to each other and cooperate with the reflector, wherein another second clamping device includes a third micrometer connected to the 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 has a through threaded hole, a top ball screw is installed in the threaded hole, the top ball screw has a sixth top bead, the fifth top bead and the sixth top bead are arranged opposite to each other and cooperate with the reflector.

[0008] Preferably, the first clamping device also includes a first limit locking device, a first locking ring and a second locking ring, wherein the first limit 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, and 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.

[0009] Preferably, the second clamping device also includes a third locking ring and a fourth locking ring, wherein the third locking ring connects the first clamp block and the second clamp block to lock the opening and closing angles of the first clamp block and the second clamp block, and the fourth locking ring connects the second clamp block and the second clamping base to lock the second clamp block on the second clamping base.

[0010] Preferably, 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, wherein 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 freedom to pitch in a vertical plane, the second roll motor is connected to the pitch motor to provide the vertical mirror with the freedom to roll in a 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 freedom to move in a vertical direction.

[0011] Preferably, the rotation axes of the pitch motor and the second roll motor coincide with each other, and the center of the reflection 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] According to the assembly method of the above-mentioned reflector adjustment device of the present invention, it includes 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, and then coupling the first and second lever arms and the first micrometer to ensure that within the travel range of the first micrometer, the maximum swing angle of the first and second lever arms will not exceed the travel of the first, second and third flexible hinges; for the second clamping device, after loosening the clamping block screw, assembling the fourth flexible hinge and the fifth flexible hinge in sequence, and then coupling the third lever arm and the second micrometer to ensure that the second micrometer moves to the midpoint of the travel, and assembling the fifth flexible hinge at this position; S2, assembling the third micrometer on the back plate without tightening it, assembling the back plate on the vertical mirror base, and coupling Combine the connecting rod and the third micrometer, install the connecting rod on the vertical mirror base, tighten the third micrometer to the back plate, and keep the opening between the fifth top bead and the sixth top bead in the maximum state; 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, and adjust the third micrometer so that the fifth and sixth top beads do not touch the mirror surface of the reflector; S4, assemble the fixing device on the back plate so that the reflector and the third pad are locked on the back plate; S5, assemble the first and second clamping devices on 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, adjust the first, second and third micrometers to correct the surface shape of the reflector.

[0014] Preferably, during the assembly of the first and second clamping devices, when the first, second, third, fourth and fifth flexible hinges are in a balanced position, the jaws of the first and second clamping devices are in a fully open state, and 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.

[0015] Preferably, the opening between the third top bead and the fourth top bead is opened to the maximum due to the elastic effect of the fourth flexible hinge, and the third top bead and the fourth top bead will not exceed the stroke of the fourth flexible hinge when they are closed.

[0016] Preferably, the second clamping device and the other second clamping device are mirror-symmetrical, and 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.

[0017] According to the reflector adjustment device of the present invention, the reflector is clamped by a top bead to fix the mirror surface, the movement direction of the clamping point is controlled by a flexible hinge, the fine adjustment of the clamping point is achieved by a micrometer and a lever arm, and the mirror surface shape is corrected by applying force to the clamping point. It can not only be used to fix and protect the plane mirror during short-distance transportation and long-distance transportation, but also can be used to correct the deformation of the plane mirror caused by factors such as gravity and stress in a large scale range, and ensure the surface stability of the mirror during short-distance transportation and long-distance transportation. According to the reflector adjustment device of the present invention, the deformation of the reflector of the synchrotron radiation thin plane mirror during installation and use can be corrected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a reflector adjustment device according to a preferred embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Exploded view of the reflector adjustment device.

[0020] Figure 3 yes Figure 2 Schematic diagram of the structure of the horizontal mirror.

[0021] Figure 4 yes Figure 3 Exploded view of the horizontal mirror.

[0022] Figure 5 yes Figure 4 Exploded view of the first clamping device.

[0023] Figure 6 yes Figure 5 A schematic structural diagram of a first clamping device.

[0024] Figure 7 yes Figure 6 Exploded view of the first clamping device.

[0025] Figure 8 yes Figure 6 A schematic diagram of a part of the first clamping device from another perspective.

[0026] Fig. 9 yes Figure 7 Side view of the first ball lever.

[0027] Fig.10 yes Figure 7 Side view of the second / third ball lever.

[0028] Fig.11 Shows the flexible fixing of the micrometer to the lever arm.

[0029] Fig.12 yes Figure 5 A schematic structural diagram of a second clamping device.

[0030] Fig.13 yes Fig.12 Exploded view of the second clamping device.

[0031] Fig.14 yes Fig.12 Schematic diagram of the assembly of the clamping block assembly of the second clamping device.

[0032] Fig.15 yes Fig.13 A schematic structural diagram of the first clamping block.

[0033] Fig.16 yes Fig.13 A schematic structural diagram of the second clamping block.

[0034] Fig.17 yes Figure 5 Schematic diagram of the structure of the fixing device.

[0035] Fig.18 yes Figure 5 Side view of a first clamping device.

[0036] Fig.19 yes Figure 5 A side view of a second clamping device.

[0037] Fig. 20 yes Figure 2 Schematic diagram of the structure of the vertical mirror.

[0038] Fig.21 yes Fig. 20 Exploded view of a vertical mirror.

[0039] Fig. 22 yes Fig.21Exploded view of the second clamping device.

[0040] Fig.23 yes Fig. 22 A schematic structural diagram of a second clamping device.

[0041] Fig.24 yes Fig. 22 Schematic diagram of the structure of the vertical mirror base.

[0042] Fig.25 Show Fig. 20 The initial assembly state of the vertical mirror. DETAILED DESCRIPTION

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

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

[0045] In this embodiment, the device base 212 is a bottom plate, providing a mounting platform for the horizontal mirror 201 and the vertical mirror 207, so that the entire reflector adjustment device can be moved as a whole. In this way, 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 adjustment mechanism and the second adjustment mechanism 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 level mirror 201, and four positioning pins are designed at its four corners. When the level mirror 201 is installed on the first adapter plate 202, it can be firmly locked, so that the level mirror 201 can be removed as a whole for offline calibration.

[0048] like Figure 2As shown, the first adjustment mechanism also includes a rotating motor 203 connected to the first adapter plate 202 and a first roll motor 204 connected to the rotating motor 203, so that the horizontal mirror 201 is provided with the degree of freedom to rotate in the horizontal plane through the rotating motor 203, and the horizontal mirror 201 is provided with the degree of freedom to roll in the plane perpendicular to the optical path through the first roll motor 204. In particular, the rotating motor 203 is a high-precision rotating motor with a minimum resolution of more than 0.001 degrees, providing a slight incident angle for the reflector of the horizontal mirror 201. In particular, when the horizontal mirror 201 is mounted on the first adapter plate 202, the center of the reflective surface of the horizontal mirror 201 is exactly located on the rotation axis of the rotating motor 203, and is also located on the rotation center of the first roll motor 204. In this embodiment, the error is controlled within 1 mm.

[0049] like Figure 2 As shown, the first adjustment mechanism also includes a first translation motor 205 connected to the first roll motor 204, so that the horizontal mirror 201 is provided with the freedom to translate perpendicular to the optical path in the horizontal plane through 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 motion accuracy of micrometer level.

[0050] like Figure 2 As shown, the first adjustment mechanism further includes a first pad 206 connecting the first translation motor 205 and the device base 212, so as to accurately place the center of the reflection surface of the horizontal mirror 201 on the optical path. In this embodiment, the error is ensured to be within 1 mm.

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

[0052] like Figure 2 As shown, the second adjustment mechanism includes a second adapter plate 208 connected to the vertical mirror 207, and four positioning pins are designed at its four corners. When the vertical mirror 207 is installed on the second adapter plate 208, it can be firmly locked, so that the vertical mirror 207 can be removed as a whole for offline calibration.

[0053] like Figure 2As 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, so that the vertical mirror 207 is provided with a degree of freedom of pitching in a vertical plane through the pitch motor 209, and the vertical mirror 207 is provided with a degree of freedom of rolling in a plane perpendicular to the optical path through the second roll motor 210. In particular, the pitch motor 209 is a high-precision rotary motor with a minimum resolution of more than 0.001 degrees, providing a slight incident angle for the reflector of the vertical mirror 207. In particular, the rotation axes of the pitch motor 209 and the second roll motor 210 are completely coincident. In particular, when the vertical mirror 207 is mounted on the second adapter plate 208, the center of the reflective 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 translation motor 211 connected to the second roll motor 210, so that the second translation motor 211 provides the vertical mirror 207 with a degree of freedom to move in the vertical direction, so that the vertical mirror 207 can cut into or out of the optical path as needed. In this embodiment, the second translation motor 211 is a high-precision translation motor with a movement accuracy of micrometer level.

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

[0056] Level mirror 201

[0057] like Figure 3-Figure 4 As shown, the horizontal mirror 201 includes a first reflector 201a, a second cushion block 201b, a horizontal mirror base 201c and a first clamping device 201d, wherein the first reflector 201a is mounted on the second cushion block 201b, and then placed on the horizontal mirror base 201c, and finally fixed by the first clamping device 201d. In this way, the horizontally placed first reflector 201a is clamped and fixed. In this embodiment, there is a three-point support device on the horizontal mirror base 201c, and the first reflector 201a and the second cushion block 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, 303 and a fixing device 304 installed around the horizontal mirror base 201c, wherein the first clamping device 301 is respectively installed at both ends of the horizontal mirror base 201c, the second clamping devices 302, 303 are installed at the central position of the horizontal mirror base 201c in mirror symmetry, and the fixing device 304 is respectively installed on the horizontal mirror base 201c on both sides of the second clamping devices 302, 303, and is used to firmly fix the second cushion block 201b on the horizontal mirror base 201c, so as to stabilize the first reflector 201a. The first clamping device 301 and the second clamping devices 302, 303 can effectively adjust the overall curvature of the first reflector 201a over a wide range of scales.

[0059] like Figure 6 As shown, the first clamping device 301 includes a first jacking ball lever 501, a second jacking ball lever 503, a third jacking ball lever 506, a first bracket 509, a second bracket 510 and a first clamping base 511, wherein the first clamping base 511 is installed 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, and the third top ball lever 506 is rotatably mounted on the second bracket 510.

[0060] like Figure 7-Figure 8 As shown, the first clamping device 301 also includes a first flexible hinge 502, which adopts a three-section design, with its two ends firmly fixed to the first bracket 509 and the second bracket 510 respectively, and the middle part passes through the first mounting hole 603 of the first ball lever 501 (see Fig. 9 Thus, through the first flexible hinge 502, the first ball lever 501 is allowed to rotate slightly along a predetermined track, the track accuracy of such rotation is very high, and during the entire rotation process, the first ball lever 501 is not easily twisted.

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

[0062] like Figure 7-Figure 8 As shown, the first clamping device 301 further includes a third flexible hinge 507, which adopts a two-stage design, and the third ball lever 506 is installed on the second bracket 510 through the third flexible hinge 507. In addition, the first clamping device 301 further includes a second locking ring 508. After the posture of the third ball lever 506 is adjusted, the second locking ring 508 locks the third ball lever 506 on the first clamping base 511.

[0063] like Figure 7-Figure 8 As shown, the first clamping device 301 further includes a first micrometer 512, which as a precision tool has a body and a telescopic head, wherein the body is mounted on the first clamping base 511, and the telescopic head is flexibly connected to the first jacking ball lever 501, the second jacking ball lever 503 and the third jacking ball lever 506. By adjusting the first micrometer 512, the first jacking ball lever 501, the second jacking ball lever 503 and the third jacking ball lever 506 can be precisely controlled to perform fine rotation along the flexible hinge axis, thereby achieving high-precision adjustment and positioning.

[0064] like Fig. 9 As shown, the first ball lever 501 includes a first ball 601 and a first lever arm 604, wherein the first ball 601 is mounted on the lateral extension of the first lever arm 604. The first ball 601 is made of stainless steel, with a diameter of not less than 5 mm, and a surface polished to a flatness between Ra0.1 and Ra0.4. The top of the first lever arm 604 has a lever vertex 602, and the upper vertex of the first ball 601 and the lever vertex 602 are located on the same horizontal plane. The top of the first lever arm 604 has a first mounting hole 603 for the first flexible hinge 502 (see Figure 7 ) is installed, and the bottom of the first lever arm 604 has a first mounting position 605 for the first micrometer 512 (see Figure 7 ) is coupled with a telescopic head. A first distance (i.e., a ball action arm) 607 is provided between the upper vertex of the first top bead 601 and the center of the first mounting hole 603, and a second distance (i.e., a lever action arm) 608 is provided between the first mounting position 605 and the center of the first mounting hole 603. The larger the ratio of the second distance 608 to the first distance 607, the greater the effect on the first reflector 201a (see Figure 3 ) is finer in control of the mirror. In this embodiment, the ratio of the second distance 608 to the first distance 607 is greater than 5.

[0065] like Fig. 9 As shown, the first ball lever 501 further includes a first position limiting locking device 606 for locking the position of the first ball lever 501. In this embodiment, the first position limiting locking device 606 is in an arc shape, and the center of the arc coincides with the center of the first mounting hole 603.

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

[0067] like Fig.10 As shown, the second ball lever 503 further includes a second limit locking device 704 for locking the position of the second ball lever 503 , and is used to lock the second lever arm 703 .

[0068] like Fig.11As shown, the telescopic head of the first micrometer 512 is flexibly fixed on the lever arms 604, 703 of the first ball lever 501, the second ball lever 503 and the third ball lever 506, so that the telescopic head can push or pull back the lever arm, and can also rotate around the lever arm, but cannot be detached from the lever arm. Symmetrical hemispherical concave holes 801 are opened on the lever arms 604, 703, and the middle of the two hemispherical concave holes 801 is opened through a through hole 802. The telescopic head of the first micrometer 512 has a hemispherical head 806 with a threaded hole on the top. When the hemispherical head 806 is pushed into the hemispherical concave hole 801, the ball 803 with a threaded rod 805 at the tail is installed from the hemispherical concave hole 801 on the other side, and the threaded rod 805 is installed in the threaded hole of the hemispherical head 806. The diameter of the threaded rod 805 is smaller than the diameter of the through hole 802. After installation, the sphere 803 and the hemispherical head 806 are fixed at both ends of the through hole 802 with moderate force, so that the telescopic head of the first micrometer 512 can drive the lever arms 604, 703 to move forward and backward, and can also rotate around the lever arms 604, 703.

[0069] like Figure 12-14 As shown, the second clamping devices 302 and 303 respectively include a clamping block assembly 1011, a third bracket 1009, a second clamping base 1006 and a second micrometer 1010, wherein the second clamping base 1006 is installed and fixed on the horizontal mirror base 201c (see Figure 5 ), the third bracket 1009 is fixedly mounted on the second clamping base 1006, the clamping block assembly 1011 is mounted on the third bracket 1009, and the second micrometer 1010 is mounted on the second clamping base 1006 and flexibly connected to 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, wherein the first clamping block 1001 is mounted on the second clamping block 1004 via the fourth flexible hinge 1002, and the clamping block screw 1007 is mounted on the first clamping block 1001 and passes through the first clamping block 1001 to press on the second clamping block 1004. The clamping block screw 1007 can adjust the opening and closing angles of the first clamping block 1001 and the second clamping block 1004 by rotating. In this embodiment, the fourth flexible hinge 1002 adopts a three-section design, with both ends mounted on the first clamping block 1001 and the middle portion mounted on the second clamping block 1004. In this embodiment, the top of the clamping block screw 1007 is spherical. It should be understood that the second clamping devices 302 and 303 are designed to be mirror-symmetrical, the third bracket 1009 and the clamping block assembly 1011 are completely identical in structure, the second clamping base 1006 is mirror-symmetrical, and the clamping block assembly 1011 adopts different assembly methods to achieve the mirror-symmetrical second clamping devices 302 and 303.

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

[0071] like Figure 12-14 As shown, the second clamping device 302, 303 also includes a third locking ring 1003 and a fourth locking ring 1005, respectively, wherein the third locking ring 1003 connects the first clamp block 1001 and the second clamp block 1004 to lock the opening and closing angles of the first clamp block 1001 and the second clamp block 1004, and the fourth locking ring 1005 connects the second clamp block 1004 and the second clamping base 1006 to lock the second clamp block 1004 on the second clamping base 1006 after adjustment.

[0072] like Fig.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, a clamping block screw 1007 (see Fig.14 ) 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 cooperates with the first locking hole 1103 to lock the opening and closing angles of the first clamping block 1001 and the second clamping block 1004. The first clamping block 1001 has a fourth mounting hole 1104 for the fourth flexible hinge 1002 to be installed. When the first clamping block 1001 is placed horizontally, the center of the fourth mounting hole 1104 and the lower vertex of the third top bead 1101 are on the same horizontal plane.

[0073] like Fig.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 the 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 the 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 the 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 and mounting the telescopic head of the second micrometer 1010, and the mounting method is as follows: Fig.11As shown. The 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 angle of the second clamping block 1004. The upper vertex of the fourth top bead 1201, the center of the fifth mounting hole 1205 and the sixth mounting hole 1206 are located 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] like Fig.17 As shown, the fixing device 304 includes a fixing base 1302, the lower part of which has a seventh mounting hole 1303, and the fixing base 1302 is fixed to the horizontal mirror base 201c (see Figure 5 ). A completely through threaded hole is opened on the top of the fixed base 1302, 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 plate 1301. In this embodiment, the locking plate 1301 is a high-density polytetrafluoroethylene sheet.

[0075] Level mirror 201 assembly

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

[0077] like Fig.18 As shown, for the first clamping device 301, when assembling the flexible hinges 502, 504, 507, the opening between the first top bead 601 and the second top bead 701 is made as large as possible. Then the lever arms 604, 703 and the telescopic head of the first micrometer 512 are assembled to couple them. The test device ensures 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, the first limit locking device 606 and the locking rings 505, 508 are locked.

[0078] like Fig.19As shown, for the second clamping device 302, 303, first completely loosen the clamping block screw 1007, and then assemble the fourth flexible hinge 1002, so that when the device is relaxed, the opening between the third top bead 1101 and the fourth top bead 1201 is opened to the maximum due to the elastic effect of the fourth flexible hinge 1002. At the same time, when the third top bead 1101 and the fourth top bead 1201 are closed, the stroke of the fourth flexible hinge 1002 will not be exceeded. When the third top bead 1101 and the fourth top bead 1201 are at the maximum opening position, the third locking ring 1003 is locked. Then the fifth flexible hinge 1008 is assembled. First, the third lever arm 1202 and the telescopic head of the second micrometer 1010 are coupled, and then the second micrometer 1010 is moved to the midpoint of the stroke, and the fifth flexible hinge 1008 is assembled at this position. The effect after assembly is that the equilibrium position of the fifth flexible hinge 1008 is exactly the midpoint position of the stroke of the second micrometer 1010. At this time, the fourth locking ring 1005 is locked.

[0079] See also Figure 4 , place the first reflector 201a and the second cushion block 201b on the horizontal mirror base 201c, and there is a three-point support device on the horizontal mirror base 201c. The first reflector 201a and the second cushion block 201b can be positioned by the three-point support device due to gravity.

[0080] See also Figure 5 , assemble the fixture 304 on the horizontal mirror base 201c. Slowly tighten the handwheels of the four fixtures 304 in sequence. Tighten each locking bolt 1304 (see Fig.17 ) Tighten clockwise 1 / 4 or 1 / 8 turn each time until all locking bolts 1304 are tightened. The first reflecting mirror 201a and the second cushion block 201b are locked on the horizontal mirror base 201c.

[0081] See also Figure 5 , assemble the two first clamping devices 301 on the horizontal mirror base 201c. Note that the top balls 601, 701 do not touch the mirror surface of the first reflector 201a. If necessary, loosen the first limit locking device 606 and the locking rings 505, 508, and adjust the first micrometer 512 to keep the top balls 601, 701 away from the mirror surface.

[0082] See also Figure 5 , assemble the second clamping device 302, 303 on the horizontal mirror base 201c. Note that the top balls 1101, 1201 do not touch the mirror surface of the first reflector 201a. If necessary, loosen the lock rings 1003, 1005, and adjust the second micrometer 1010 to keep the top balls 1101, 1201 away from the mirror surface. The second clamping devices 302, 303 are mirror-symmetrical. When assembled, the top balls 1101, 1201 act exactly in the middle of the first reflector 201a.

[0083] Place the device under the laser interferometer.

[0084] Release the first limit locking device 606 and the locking rings 505 , 508 , 1003 , 1005 .

[0085] Each micrometer 512, 1010 is fine-tuned to correct the surface shape of the first reflector 201a according to the surface shape result fed back by the laser interferometer. For the second clamping device 302, 303, the second micrometer 1010 is preferably used to slightly fit the top ball 1201 to the first reflector 201a, and then the clamping block screw 1007 is rotated to make the top ball 1101 also slightly fit the first reflector 201a. Then, the second micrometer 1010 is fine-tuned to correct the surface shape of the first reflector 201a.

[0086] After obtaining a suitable surface structure, the first limit locking device 606 and the locking rings 505, 508, 1003, 1005 are locked.

[0087] Vertical mirror 207

[0088] like Figure 20-21 As shown, the vertical mirror 207 includes a second reflector 201e, a third cushion block 201f, a vertical mirror base 306 and a second clamping device 201g, wherein the second reflector 201e is mounted on the third cushion block 201f, and then placed on the vertical mirror base 306, and finally fixed by the second clamping device 201g. In this way, the vertically placed second reflector 201e is clamped and fixed. In this embodiment, there is a three-point support device on the vertical mirror base 306, and the second reflector 201e and the third cushion block 201f can be positioned by the three-point support device due to gravity.

[0089] like Figure 20-21 As shown, the vertical mirror 207 further includes a back plate 305, which is assembled on the vertical mirror base 306, and a gap is left between the second reflecting mirror 201e and the third spacer 201f, so that they are not in direct contact.

[0090] like Fig. 22 As shown, the second clamping device 201g includes a first clamping device 301, second clamping devices 302, 303 and a fixing device 304 installed around a back plate 305, wherein the first clamping device 301 is respectively 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 simultaneously installed on the back plate 305 and the vertical mirror base 306, and the fixing device 304 is respectively installed on both sides of the second clamping device 302 on the back plate 305, and is used to fix the third cushion block 201f, so as to stabilize the second reflector 201e, and at the same time, the overall curvature of the second reflector 201e can be effectively adjusted over a wide range of scales. The structure of the first clamping device 301 is as shown in FIG. Figure 6-Figure 11 and Fig.18 As shown, the structure of the second clamping device 302 is as follows Figure 12-16 and Fig.19 As shown, the structure of the fixing device 304 is as follows Fig.17 shown.

[0091] like Fig.23 As shown, the second clamping device 303 includes a third micrometer 401, whose telescopic head is fixed on a connecting rod 402, and the tail of the connecting rod 402 is provided with a U-shaped groove 403 and a guide rail 404. A fifth top ball 405 is provided at one end of the U-shaped groove 403. A threaded hole is provided at the other end of the U-shaped groove 403, and a top ball screw 406 is provided in the threaded hole. A hand wheel is provided at one end of the top ball screw 406, and a sixth top ball 407 is provided at the other end. In this embodiment, the fifth top ball 405 and the sixth top ball 407 are respectively made of stainless steel, with a diameter of not less than 5 mm, and the surface is polished, with a flatness between Ra0.1 and Ra0.4.

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

[0093] Vertical mirror 207 assembly

[0094] like Fig.25 As shown, the third micrometer 401 is assembled on the back plate 305 and is not tightened.

[0095] Assemble the back plate 305 on the vertical mirror base 306. Note that the third micrometer 401 should be placed in the track groove 502 of the vertical mirror base 306 (see Fig.24 )Inside.

[0096] Attach the connecting rod 402 from the track slot 502 (see Fig.24 ) is loaded into the front side and coupled with the third micrometer 401.

[0097] Use screws to gently install the connecting rod 402 on the vertical mirror base 306. Rotate the third micrometer 401 to drive the connecting rod 402 to move, and correct the posture of the connecting rod 402 and the third micrometer 401 during the movement. Tighten the screws on the connecting rod 402 until no resistance is felt at all.

[0098] The fixing screw of the third micrometer 401 is tightened 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] See also Fig.23 , completely loosen the fifth top bead 405 and the sixth top bead 407, and keep the opening at the maximum state.

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

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

[0102] like Fig.18 As shown, for the first clamping device 301, when assembling the flexible hinges 502, 504, 507, the opening between the first top bead 601 and the second top bead 701 is made as large as possible. Then the lever arms 604, 703 and the telescopic head of the first micrometer 512 are assembled to couple them. The test device ensures 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, the first limit locking device 606 and the locking rings 505, 508 are locked.

[0103] like Fig.19As shown, for the second clamping device 302, first completely loosen the clamping block screw 1007, and then assemble the fourth flexible hinge 1002, so that when the device is relaxed, the opening between the third top bead 1101 and the fourth top bead 1201 is opened to the maximum due to the elastic effect of the fourth flexible hinge 1002. At the same time, when the third top bead 1101 and the fourth top bead 1201 are closed, the stroke of the fourth flexible hinge 1002 will not be exceeded. When the third top bead 1101 and the fourth top bead 1201 are at the maximum opening position, the third locking ring 1003 is locked. Then the fifth flexible hinge 1008 is assembled. First, the third lever arm 1202 and the telescopic head of the second micrometer 1010 are coupled, and then the second micrometer 1010 is moved to the midpoint of the stroke, and the fifth flexible hinge 1008 is assembled at this position. The effect after assembly is that the equilibrium position of the fifth flexible hinge 1008 is exactly the midpoint position of the stroke of the second micrometer 1010. At this time, the fourth locking ring 1005 is locked.

[0104] See also Fig.25 , assemble the fixture 304 on the back plate 305. Slowly tighten the handwheels of the two fixtures 304 in sequence. Tighten each locking bolt 1304 (see Fig.17 ) Tighten the screws 1304 clockwise by 1 / 4 or 1 / 8 turn each time until all the locking bolts 1304 are tightened. The second reflector 201e and the third spacer 201f are locked on the back plate 305.

[0105] See also Fig.25 , assemble the two first clamping devices 301 on the back plate 305. Note that the top balls 601, 701 do not touch the mirror surface of the second reflector 201e. If necessary, the first limit locking device 606 and the locking rings 505, 508 can be loosened, and the first micrometer 512 can be adjusted to keep the top balls 601, 701 away from the mirror surface.

[0106] See also Figure 5 , assemble the second clamping device 302 on the back plate 305. Note that the top beads 1101, 1201 do not touch the mirror surface of the second reflector 201e. If necessary, the locking rings 1003, 1005 can be loosened, and the second micrometer 1010 can be adjusted to keep the top beads 1101, 1201 away from the mirror surface. During assembly, the top beads 1101, 1201 act exactly in the middle of the second reflector 201e.

[0107] Place the device under the laser interferometer.

[0108] Release the first limit locking device 606 and the locking rings 505 , 508 , 1003 , 1005 .

[0109] Fine-tune each micrometer 512, 1010, 401, and correct the surface shape of the second reflector 201e according to the surface shape result fed back by the laser interferometer. For the second clamping device 302, first use the second micrometer 1010 to slightly fit the top bead 1201 to the second reflector 201e, and then rotate the clamping block screw 1007 to make the top bead 1101 also slightly fit the second reflector 201e. Then fine-tune the second micrometer 1010 to correct the surface shape of the first reflector 201a. For the second clamping device 303, first use the third micrometer 401 to slightly fit the fifth top bead 405 to the second reflector 201e, and then rotate the top bead screw 406 to make the sixth top bead 407 slightly fit the second reflector 201e. According to the result of the laser interferometer, adjust the third micrometer 401 to correct the surface shape of the second reflector 201e.

[0110] After obtaining a suitable surface structure, the first limit locking device 606 and the locking rings 505, 508, 1003, 1005 are locked.

[0111] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A reflector adjustment device, characterized in that: The reflector adjustment device comprises a vertical mirror, and the vertical mirror comprises a reflector, a third pad, a clamping device, a fixing device, a vertical mirror base and a back plate, the reflector is supported and installed on the vertical mirror base through the third pad, the back plate is assembled on the vertical mirror base, the fixing device fixes the third pad to stabilize the reflector, the clamping device is installed around the back plate, and the reflector is clamped on the optical path through the clamping device, and 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 ball lever, a second top ball lever, a third top ball lever, a first bracket, a second bracket, A first clamping base and a first micrometer, wherein the first bracket and the second bracket are fixedly installed on the first clamping base at a distance from each other, the first top ball lever is rotatably installed between the first bracket and the second bracket through a first flexible hinge, the second top ball lever is rotatably installed on the first bracket through a second flexible hinge, the third top ball lever is rotatably installed on the second bracket through a third flexible hinge, the first micrometer is installed on the first clamping base and flexibly connected to the first, second and third top ball levers respectively, the first top ball lever includes a first top ball installed on the first lever arm, the second and third top ball levers The second clamping device comprises a second top bead mounted on the second lever arm, the first top bead and the second top bead are arranged opposite to each other and cooperate with the reflector, wherein the second clamping device comprises a clamping block assembly, a third bracket, 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 mounted on the second clamping block through a fourth flexible hinge, the clamping block screw is mounted on the first clamping block and passes through the first clamping block to press on the second clamping block to adjust the opening and closing angles of the first clamping block and the second clamping block, the clamping block assembly is rotatably mounted on the third bracket through a fifth flexible hinge, and the third bracket is fixedly mounted On the second clamping base, the second micrometer is installed on the second clamping base and is flexibly connected to the clamping block assembly, the first clamping block includes a third top bead, the second clamping block includes a fourth top bead installed on the third lever arm, the third top bead and the fourth top bead are arranged opposite to each other and cooperate with the reflector, wherein another second clamping device includes a third micrometer connected to the 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 has a through threaded hole, a top ball screw is installed in the threaded hole, the top ball screw has a sixth top bead, the fifth top bead and the sixth top bead are arranged opposite to each other and cooperate with the reflector.

2. The reflector adjustment device according to claim 1, characterized in that: The first clamping device also includes a first limit locking device, a first locking ring and a second locking ring, wherein the first limit 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, and 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 reflector adjustment device according to claim 1, characterized in that: The second clamping device also includes a third locking ring and a fourth locking ring, wherein the third locking ring connects the first clamp block and the second clamp block to lock the opening and closing angles of the first clamp block and the second clamp block, and the fourth locking ring connects the second clamp block and the second clamping base to lock the second clamp block on the second clamping base.

4. The reflector 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, wherein 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 freedom to pitch in a vertical plane, the second roll motor is connected to the pitch motor to provide the vertical mirror with the freedom to roll in a 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 freedom to move in a vertical direction.

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

6. The reflector adjustment device according to claim 1, characterized in that: The fixing device is mounted on the back plate.

7. A method for assembling a reflector adjustment device according to any one of claims 1 to 6, characterized in that: The assembly method comprises 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 top bead and the second top bead is as large as possible, and then the first and second lever arms and the first micrometer are coupled to ensure that within the travel range of the first micrometer, the maximum swing angle of the first and second lever arms does not exceed the travel of the first, second and third flexible hinges; for the second clamping device, after loosening the clamping block screw, assemble the fourth flexible hinge and the fifth flexible hinge in sequence, and then couple the third lever arm and the second micrometer to ensure that the second micrometer moves to the midpoint of the travel, and assemble the fifth flexible hinge at this position; S2, assemble the third micrometer on the back plate without tightening it, assemble the back plate on the vertical mirror base, couple the connecting rod with the third micrometer, install the connecting rod on the vertical mirror base, tighten the third micrometer to the back plate, and keep the opening between the fifth top bead and the sixth top bead in the maximum state; S3, placing 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, and adjusting the third micrometer so that the fifth and sixth top beads do not touch the mirror surface of the reflector; S4, assembling the fixing device on the back plate so that the reflector and the third spacer are locked on the back plate; S5, assembling the first and second clamping devices on the back plate, adjusting the first micrometer so that the first and second beads do not touch the mirror surface of the reflector, and adjusting the second micrometer so that the third and fourth beads do not touch the mirror surface of the reflector; S6, moving the reflector adjustment device into the optical path; S7, adjust the first, second and third micrometers to correct the surface shape of the reflector.

8. The assembly method according to claim 7, characterized in that: During the process of assembling the first and second clamping devices, when the first, second, third, fourth and fifth flexible hinges are in a balanced position, the clamps of the first and second clamping devices are in a fully open state, and after the clamps 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 top bead and the fourth top bead is opened to the maximum due to the elastic effect of the fourth flexible hinge, and the third top bead and the fourth top bead 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.

Images