Optical-mechanical structure device for rotary Fourier transform spectrometer

Abstract

The invention discloses an optical-mechanical structure device for a rotary Fourier transform spectrometer, relates to the technical field of spectrometers, and solves the problem that an optical-mechanical structure device of an existing infrared Fourier transform spectrometer is difficult to give consideration to the overall stability and adjustment convenience of an optical system. The interferometer shell is of a closed structure, and the stability and the anti-jamming capability of an optical system are improved through overall machining of a high-precision numerical control machine tool; the reflector mounting and adjusting mechanism and the end mirror mounting and adjusting mechanism are both combined in a thread driving and spring resetting mode, and high-precision adjustment on three degrees of freedom of an optical axis, pitching and deflection is provided; the rotating mirror driving mechanism adopts a motor direct drive mode to rotate the rotating mirror, the structure is simplified, and the stability and the rotating speed are improved; each part is fixed at the reserved position of the interferometer shell, so that redundant connecting and fixing mechanisms can be avoided, the integrity of an optical system can be ensured, and the complexity of light path alignment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of spectrometers, and in particular to an optical-mechanical structure device for a rotary Fourier transform spectrometer. Background Art

[0002] The optomechanical structure device is a key component for the long-term and stable operation of the Fourier transform spectrometer. Its main features can be reflected in the following aspects: 1. It provides a stable and permanently aligned working platform for the optical system to avoid vibration affecting the quality of the interference signal; 2. It can be flexibly used in combination with other infrared accessories to meet different application requirements; 3. It can greatly reduce the complexity of optical system calibration and improve the efficiency of system calibration.

[0003] Generally speaking, the optical-mechanical structure of a rotary Fourier transform spectrometer is relatively complex, and it is difficult to balance the overall stability of the optical system and the convenience of adjustment in design. Moreover, most optical components are fixed by glue dispensing, which makes it difficult to adjust them after installation. The production cost and operation complexity are quite high. Therefore, according to the characteristics of the rotary Fourier transform spectrometer, it is extremely important to optimize the design of the optical-mechanical structure to improve the current situation. Summary of the invention

[0004] In view of the problem that the optomechanical structure device of the existing infrared Fourier transform spectrometer is difficult to balance the overall stability of the optical system and the convenience of adjustment, the purpose of the present invention is to provide an optomechanical structure device for a rotary Fourier transform spectrometer.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An optical-mechanical structure device for a rotary Fourier transform spectrometer, comprising: an interferometer housing 1, a rotating mirror driving mechanism 2, an end mirror mounting and adjusting mechanism 3, a laser introduction mechanism 4, a laser extraction mechanism 5, a detector assembly 6 and a reflector mounting and adjusting mechanism 7; the interferometer housing 1 is a hexagonal prism-shaped shell structure, the bottom surface of the interferometer housing 1 is connected to the instrument housing, a laser introduction mechanism 4, a laser extraction mechanism 5 and a rotating mirror driving mechanism 2 are installed on the top surface of the interferometer housing 1, a reflector mounting and adjusting mechanism 7 is respectively installed on the left side and the right side of the interferometer housing 1, a detector assembly 6 is installed on the left front side of the interferometer housing 1, and an end mirror mounting and adjusting mechanism 3 is respectively installed on the left rear side and the right rear side of the interferometer housing 1.

[0007] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the rotating mirror driving mechanism 2 comprises: a DC motor 201, a driving mechanism fixing member 202, a mounting seat connecting member 206, a rotating mirror 207, a mounting baffle 208 and a rotating mirror mounting seat 209. The driving mechanism fixing member 202 is installed on the interferometer housing 1, the DC motor 201 is installed at the bottom of the driving mechanism fixing member 202 and is located in the interferometer housing 1, the output shaft of the DC motor 201 penetrates the through hole of the driving mechanism fixing member 202, and the rotating mirror mounting seat 209 is arranged at the driving mechanism fixing member 202. The top side of the moving mechanism fixing member 202 is connected to the output shaft of the DC motor 201, the mounting seat connecting member 206 is installed on the rotating mirror mounting seat 209 and enclosed with the rotating mirror mounting seat 209 to form a rotating mirror mounting groove, the rotating mirror mounting seat 209 is provided with an arc groove on the side facing the mounting seat connecting member 206, the rotating mirror 207 is installed in the arc groove, the mounting baffle 208 is installed in the rotating mirror mounting groove, the mounting baffle 208 is used to limit the rotating mirror 207 in the arc groove, and a buffer gasket is provided on the side of the mounting baffle 208 facing the rotating mirror 207;

[0008] The rotating mirror driving mechanism 2 also includes: a countersunk bolt 203, a fixing bolt 204, a rotating mirror fastener 205 and a first tightening bolt 210. The DC motor 201 is installed on the driving mechanism fixing member 202 through multiple countersunk bolts 203. The output shaft of the DC motor 201 is installed in the bottom opening of the rotating mirror mounting seat 209 and is locked by the first tightening bolt 210. The mounting seat connecting member 206 is installed on the rotating mirror mounting seat 209 through multiple fixing bolts 204. The mounting baffle 208 and the mounting seat connecting member 206 are connected by at least two rotating mirror fasteners 205. The multiple rotating mirror fasteners 205 are used to adjust the mounting baffle 208 to press the rotating mirror 207.

[0009] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the end mirror installation adjustment mechanism 3 includes: a first clamping ring 304, a first reflecting mirror 305, a lens mounting member 306, a first adjustment frame movable member 307 and an adjustment frame fixing member 310, the adjustment frame fixing member 310 is installed on the interferometer housing 1, a limiting groove is provided on one side of the adjustment frame fixing member 310, the lens mounting member 306 is a cylindrical structure, the first reflecting mirror 305 is installed in the lens mounting member 306 through the first clamping ring 304, the lens mounting member 306 is installed at one end of the first adjustment frame movable member 307, the other end of the first adjustment frame movable member 307 is located in the limiting groove of the adjustment frame fixing member 310, and the lens mounting member 306 and the first adjustment frame movable member 307 are both located in the interferometer housing 1;

[0010] The end mirror installation adjustment mechanism 3 also includes: a first cylindrical pin 301, a first spring 302, a second cylindrical pin 303 and a first plane constraint 308. One end of the first adjustment frame movable member 307 is provided with a plurality of slots for installing the second cylindrical pin 303, and the other end of the first adjustment frame movable member 307 is provided with a plurality of prefabricated slots for installing the first plane constraint 308; the other side of the adjustment frame fixed member 310 is provided with a plurality of slots for installing the first cylindrical pin 301, and the plurality of first springs 302 are parallel to the axis of the first adjustment frame movable member 307 and all pass through the first adjustment frame movable member 307 and the adjustment frame fixed member 310, one end of each first spring 302 is connected to a first cylindrical pin 301, and the other end of each first spring 302 is connected to a second cylindrical pin 303;

[0011] The end mirror mounting adjustment mechanism 3 also includes: a first thread pair 309, a first precision adjustment screw 311 and a first locking nut 312. A plurality of first thread pairs 309 are installed on the adjustment frame fixing member 310. A first precision adjustment screw 311 is screwed into each first thread pair 309. A first locking nut 312 is screwed on each first precision adjustment screw 311. The screw end of each first precision adjustment screw 311 abuts against a first plane constraint member 308.

[0012] The above-mentioned optical-mechanical structure device for the rotary Fourier transform spectrometer, wherein the laser introduction mechanism 4 comprises: a laser drive circuit interface board 408, a laser housing 409 and a laser introduction optical path housing 410, the middle part of the laser introduction optical path housing 410 is connected to the interferometer housing 1, the laser housing 409 is installed at one end of the laser introduction optical path housing 410, and the laser drive circuit interface board 408 is installed on the laser housing 409;

[0013] The laser introduction mechanism 4 further includes: a first right angle prism 401, a collimating lens 402 and a second retaining ring pressing ring 403, the first right angle prism 401, the collimating lens 402 and the second retaining ring pressing ring 403 are all arranged in a laser introduction optical path housing 410, the collimating lens 402 is installed in the middle of the laser introduction optical path housing 410 through the second retaining ring pressing ring 403, and the first right angle prism 401 is installed at the other end of the laser introduction optical path housing 410;

[0014] The laser introduction mechanism 4 also includes: a laser diode 405 and a laser diode mounting seat 406 . The laser diode 405 and the laser diode mounting seat 406 are both arranged in a laser housing 409 . The laser diode mounting seat 406 is connected to a laser driving circuit interface board 408 , and the laser diode 405 is mounted on the laser diode mounting seat 406 .

[0015] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the laser introduction mechanism 4 also includes: a second fixing bolt 404, a first circuit interface board fixing bolt 407, a first bolt 411 and a first right-angle prism baffle 412, the laser driving circuit interface board 408 and the laser housing 409 are connected by multiple first circuit interface board fixing bolts 407, the laser housing 409 and the laser introduction optical path housing 410 are flexibly locked and connected and locked by the second fixing bolt 404, the first right-angle prism baffle 412 is installed at the other end of the laser introduction optical path housing 410 and is arranged in the interferometer housing 1, and the first right-angle prism 401, the laser introduction optical path housing 410 and the first right-angle prism baffle 412 are connected by at least two first bolts 411.

[0016] The above-mentioned optical-mechanical structure device for the rotary Fourier transform spectrometer, wherein the laser extraction mechanism 5 comprises: a photoelectric conversion circuit interface board 508, a detector housing 509 and a laser extraction optical path housing 510, the middle part of the laser extraction optical path housing 510 is connected to the interferometer housing 1, the detector housing 509 is installed at one end of the laser extraction optical path housing 510, and the photoelectric conversion circuit interface board 508 is installed on the detector housing 509;

[0017] The laser extraction mechanism 5 further includes: a second right-angle prism 501, a focusing lens 502 and a third retaining ring 503. The second right-angle prism 501, the focusing lens 502 and the third retaining ring 503 are all arranged in a laser extraction optical path housing 510. The focusing lens 502 is installed in the middle of the laser extraction optical path housing 510 through the third retaining ring 503. The second right-angle prism 501 is installed at the other end of the laser extraction optical path housing 510.

[0018] The laser extraction mechanism 5 also includes: a photodiode 505 and a photodiode mounting seat 506 . The photodiode 505 and the photodiode mounting seat 506 are both arranged in a detector housing 509 . The photodiode mounting seat 506 is connected to a photoelectric conversion circuit interface board 508 , and the photodiode 505 is mounted on the photodiode mounting seat 506 .

[0019] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the laser extraction mechanism 5 also includes: a third fixing bolt 504, a second circuit interface board fixing bolt 507, a second bolt 511 and a second right-angle prism baffle 512, the photoelectric conversion circuit interface board 508 and the detector housing 509 are connected by multiple second circuit interface board fixing bolts 507, the detector housing 509 and the laser extraction optical path housing 510 are flexibly locked and connected and locked by the third fixing bolt 504, the second right-angle prism baffle 512 is installed at the other end of the laser extraction optical path housing 510 and is arranged in the interferometer housing 1, and the second right-angle prism 501, the laser extraction optical path housing 510 and the second right-angle prism baffle 512 are connected by at least two second bolts 511.

[0020] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the detector assembly 6 includes: a fourth retaining ring pressing ring 601, an aspheric lens 602, a lens mounting part 603, a lens adapter 604, a second locking nut 605, a detector adapter 606, a connecting bolt 607, and an infrared detector 608. The lens mounting part 603 is connected to the interferometer housing 1, and the aspheric lens 602 is installed in the lens mounting part 603 through the fourth retaining ring pressing ring 601. The end of the lens mounting part 603 is threadedly connected to the lens adapter 604. The detector adapter 606 is installed on the end of the infrared detector 608 through a plurality of connecting bolts 607. The detector adapter 606 and the lens adapter 604 are threadedly connected and locked by the second locking nut 605. The spacing between the aspheric lens 602 and the infrared detector 608 is adjusted by adjusting the locking position of the second locking nut 605.

[0021] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the reflector installation and adjustment mechanism 7 includes: a reflector adjustment frame fixing part 701, a reflector adjustment frame movable part 703, a lens mounting seat 704, a second reflector 705 and a fifth retaining ring pressing ring 706, the reflector adjustment frame fixing part 701 is connected to the interferometer housing 1, the lens mounting seat 704 is a cylindrical structure, the second reflector 705 is installed in the lens mounting seat 704 through the fifth retaining ring pressing ring 706, the lens mounting seat 704 is installed at one end of the reflector adjustment frame movable part 703, the reflector adjustment frame fixing part 701 is arranged at the other end of the reflector adjustment frame movable part 703, and the reflector adjustment frame movable part 703 and the lens mounting seat 704 are both located in the interferometer housing 1.

[0022] The above-mentioned optical-mechanical structure device for a rotary Fourier transform spectrometer, wherein the reflector installation adjustment mechanism 7 further includes: a spherical steel ball 702, a third cylindrical pin 707, a second spring 708, and a second plane constraint 709; one end of the reflector adjustment frame movable member 703 is provided with a plurality of slots for installing the third cylindrical pin 707; the other end of the reflector adjustment frame movable member 703 is provided with a plurality of prefabricated grooves for installing the second plane constraint 709; a side of the reflector adjustment frame fixing member 701 away from the reflector adjustment frame movable member 703 is provided with a plurality of prefabricated grooves for installing the third cylindrical pin 707; The slot of the cylindrical pin 707, the plurality of second springs 708 are parallel to the axis of the reflector adjustment frame movable part 703 and all pass through the reflector adjustment frame fixed part 701 and the reflector adjustment frame movable part 703, one end of each second spring 708 is connected to a third cylindrical pin 707 on the reflector adjustment frame movable part 703, the other end of each second spring 708 is connected to a third cylindrical pin 707 on the reflector adjustment frame fixed part 701, and a rotatable spherical steel ball 702 is installed between the reflector adjustment frame fixed part 701 and the reflector adjustment frame movable part 703;

[0023] The reflector mounting adjustment mechanism 7 also includes: a second thread pair 710, a second precision adjustment screw 711 and a third locking nut 712. A plurality of second thread pairs 710 are installed on the reflector adjustment frame fixing member 701. A second precision adjustment screw 711 is screwed into each second thread pair 710. A third locking nut 712 is screwed on each second precision adjustment screw 711. The screw end of each second precision adjustment screw 711 abuts against a second plane constraint 709.

[0024] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0025] (1) The interferometer housing of the present invention adopts a closed structure and is integrally processed by a high-precision CNC machine tool to improve the stability and anti-interference ability of the optical system;

[0026] (2) The reflector installation adjustment mechanism and the end mirror installation adjustment mechanism of the present invention both adopt a combination of thread drive and spring return to provide high-precision adjustment of the three degrees of freedom of the optical axis, pitch and yaw;

[0027] (3) The rotating mirror driving mechanism of the present invention adopts a motor direct drive method to execute the rotation of the rotating mirror, which simplifies the structure and improves the stability and rotation speed;

[0028] (4) In the present invention, each part is fixed to the reserved position of the interferometer housing, which can avoid redundant connection and fixing mechanisms, ensure the integrity of the optical system, and reduce the complexity of optical path alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an optomechanical structure device for a rotary Fourier transform spectrometer of the present invention.

[0030] Figure 2 The present invention is a schematic structural diagram of an interferometer housing of an optomechanical structure device for a rotary Fourier transform spectrometer.

[0031] Figure 3 The present invention is a schematic structural diagram of a rotating mirror driving mechanism of an optomechanical structure device for a rotating Fourier transform spectrometer.

[0032] Figure 4 The present invention is a schematic structural diagram of an end mirror installation and adjustment mechanism of an optical-mechanical structure device for a rotary Fourier transform spectrometer.

[0033] Figure 5 The present invention is a schematic diagram of the position of a first precision adjustment screw of an end mirror installation adjustment mechanism of an optical-mechanical structure device for a rotary Fourier transform spectrometer.

[0034] Figure 6 The present invention is a schematic structural diagram of a laser introduction mechanism of an optomechanical structure device for a rotary Fourier transform spectrometer.

[0035] Figure 7 The present invention is a side view of a laser introduction mechanism of an optomechanical structure device for a rotary Fourier transform spectrometer.

[0036] Figure 8 The present invention is a schematic structural diagram of a laser extraction mechanism of an optomechanical structure device for a rotary Fourier transform spectrometer.

[0037] Fig. 9 The present invention is a side view of a laser extraction mechanism of an optomechanical structure device for a rotary Fourier transform spectrometer.

[0038] Fig.10 It is a structural schematic diagram of a detector assembly of an optomechanical structure device for a rotary Fourier transform spectrometer of the present invention.

[0039] Fig.11 The present invention is a schematic structural diagram of a reflector installation and adjustment mechanism of an optical-mechanical structure device for a rotary Fourier transform spectrometer.

[0040] Fig.12 The present invention is a schematic diagram of the position of a second precision adjustment screw of a reflector mounting adjustment mechanism of an optical-mechanical structure device for a rotary Fourier transform spectrometer.

[0041] In the attached drawings: 1. interferometer housing; 2. rotating mirror driving mechanism; 3. end mirror mounting adjustment mechanism; 4. laser introduction mechanism; 5. laser extraction mechanism; 6. detector assembly; 7. reflector mounting adjustment mechanism; 201. DC motor; 202. driving mechanism fixing member; 203. countersunk bolt; 204. fixing bolt; 205. rotating mirror fastener; 206. mounting seat connecting member; 207. rotating mirror; 208. mounting baffle; 209. rotating mirror mounting seat; 210. first fixing bolt; 301. first cylindrical pin; 302. first spring; 303. second cylindrical pin; 30 4. First retaining ring pressure ring; 305. First reflector; 306. Lens mounting member; 307. First adjustment frame movable member; 308. First plane restraint member; 309. First thread pair; 310. Adjustment frame fixing member; 311. First precision adjustment screw; 312. First locking nut; 401. First right angle prism; 402. Collimating lens; 403. Second retaining ring pressure ring; 404. Second fixing bolt; 405. Laser diode; 406. Laser diode mounting seat; 407. First circuit interface board fixing bolt; 408. Laser drive circuit interface board; 409. Laser housing; 410, laser introduction optical path housing; 411, first bolt; 412, first right-angle prism baffle; 501, second right-angle prism; 502, focusing lens; 503, third clamping ring; 504, third fixing bolt; 505, photodiode; 506, photodiode mounting seat; 507, second circuit interface board fixing bolt; 508, photoelectric conversion circuit interface board; 509, detector housing; 510, laser extraction optical path housing; 511, second bolt; 512, second right-angle prism baffle; 601, fourth clamping ring; 602, non-spherical Surface lens; 603, lens mounting part; 604, lens adapter; 605, second locking nut; 606, detector adapter; 607, connecting bolt; 608, infrared detector; 701, reflector adjustment frame fixing part; 702, spherical steel ball; 703, reflector adjustment frame movable part; 704, lens mounting seat; 705, second reflector; 706, fifth retaining ring pressure ring; 707, third cylindrical pin; 708, second spring; 709, second plane constraint; 710, second thread pair; 711, second precision adjustment screw; 712, third locking nut. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0043] Please refer to Figures 1 to 12As shown, an optical-mechanical structure device for a rotary Fourier transform spectrometer is shown, which is used in the field of infrared spectrum measurement and material analysis, and includes: an interferometer housing 1, a rotating mirror driving mechanism 2, a reflector mounting and adjusting mechanism 7, an end mirror mounting and adjusting mechanism 3, a laser introduction mechanism 4, a laser extraction mechanism 5, and a detector assembly 6. Its working principle is to generate a time domain interference signal by driving the rotating mirror to rotate, and use Fourier transform to obtain an accurate spectrum. The interferometer housing 1 of the present invention adopts a closed structure, and is processed as a whole by a high-precision CNC machine tool to improve the stability and anti-interference ability of the optical system; the reflector mounting and adjusting mechanism 7 and the end mirror mounting and adjusting mechanism 3 both adopt a combination of threaded drive and spring reset to provide high-precision adjustment on the three degrees of freedom of the optical axis, pitch and yaw; the rotating mirror driving mechanism 2 adopts a motor direct drive method to execute the rotation of the rotating mirror, simplifying the structure and improving the stability and speed; each part is fixed to the reserved position of the interferometer housing 1, which can avoid redundant connection and fixing mechanisms, can ensure the integrity of the optical system, and reduce the complexity of optical path alignment.

[0044] The overall structure of the present invention is as follows Figure 1 As shown, they are: interferometer housing 1, rotating mirror driving mechanism 2, end mirror installation adjustment mechanism 3, laser introduction mechanism 4, laser extraction mechanism 5, detector assembly 6, reflector installation adjustment mechanism 7. The interferometer housing 1 is the core part of the whole structure, which can be connected with the instrument housing, with multiple threads at the bottom for locking, and the top of the housing can fix the cables and circuit devices for electrical connection; the rotating mirror driving mechanism 2 is connected to the top of the interferometer housing 1 with six bolts; the laser introduction mechanism 4 and the laser extraction mechanism 5 are connected to the top of the interferometer housing 1 with three bolts respectively; the end mirror installation adjustment mechanism 3 and the reflector installation adjustment mechanism 7 each have two sets, which are symmetrical on the left and right, and are connected to the side of the interferometer housing 1 with four bolts respectively; the detector assembly 6 is connected to the side of the interferometer housing 1 with six bolts.

[0045] The interferometer housing 1 is as follows Figure 2 As shown, the housing of the interferometer is machined by CNC machining to cut out the required internal optical chamber on a whole piece of aluminum material and reserve the installation position of the optical element, and the optical element installation mechanism is connected and positioned by the boss. Such a design improves the overall stability of the optical system and greatly simplifies the difficulty of optical path alignment. In addition, a temperature control module can be added to the bottom of the interferometer housing 1, and the temperature of the internal chamber of the interferometer can be adjusted by TEC to reduce background radiation and improve the temperature adaptability of the instrument.

[0046] The mirror drive mechanism 2 is as follows: Figure 3As shown, it includes: a DC motor 201, a driving mechanism fixing part 202, a countersunk bolt 203, a fixing bolt 204, a rotating mirror fastener 205, a mounting seat connecting part 206, a rotating mirror 207, a mounting baffle 208, a rotating mirror mounting seat 209, and a first fixing bolt 210. The driving mechanism fixing part 202 is connected to the interferometer housing 1 through six countersunk holes on the periphery; the DC motor 201 is fixed to the middle position of the driving mechanism fixing part 202 through the countersunk bolt 203; the rotating mirror mounting seat 209 has a hole at the bottom, which is connected to the output shaft of the DC motor 201 and is fastened through the first fixing bolt 210 to reduce the relative displacement between the motor output shaft and the rotating mirror mounting seat and ensure the stability of the rotating mirror rotation; the rotating mirror 207 is installed in the arc groove at the top of the rotating mirror mounting seat 209, and pressure is applied to the rotating mirror through the mounting baffle 208. The rotating mirror is fixed in the arc groove, and a buffer gasket made of silicone material is installed on one side of the mounting baffle to prevent the lens from cracking due to uneven force; the mounting seat connector 206 is fastened to one side of the rotating mirror mounting seat 209 through three fixing bolts 204 at the bottom, and the position of the mounting baffle 208 is adjusted through the rotating mirror fastener 205 to fasten the rotating mirror; the rotating mirror fastener 205 is composed of a ball head steel ball bolt and a locking nut, which is adjusted through the threaded hole of the mounting seat connector 206 to adjust the position and pressure of the mounting baffle 208, and locked through the locking nut. When the system is working, the DC motor 201 drives the rotating mirror 207 to rotate at a constant speed, and the optical path difference between the two coherent light beams transmitted through the rotating mirror 207 changes with the different rotation angles of the rotating mirror 207, thereby generating a time domain interference signal. The rotating mirror driving mechanism 2 of the present invention adopts a motor direct drive form to drive the rotating mirror to rotate, simplifies the structure, improves the stability of the rotating mirror drive, and is easier to achieve a high speed to increase the spectrum measurement frequency.

[0047] The end mirror installation adjustment mechanism 3 is as follows Figure 4 and Figure 5As shown, it includes: a first cylindrical pin 301, a first spring 302, a second cylindrical pin 303, a first retaining ring 304, a first reflector 305, a lens mounting part 306, a first adjustment frame movable part 307, a first plane restraint part 308, a first thread pair 309, an adjustment frame fixing part 310, a first precision adjustment screw 311, and a first locking nut 312. The first spring 302 is stretched by the first cylindrical pin 301 and the second cylindrical pin 303 on both sides, and is used to connect the first adjustment frame movable part 307 and the adjustment frame fixed part 310, and provide appropriate reset force during the adjustment process to ensure that the adjusted position is stable and unchanged; the first reflector 305 is fixed to the lens mounting part 306 by the first clamping ring pressure ring 304; the lens mounting part 306 is an annular internal hollow structure, and the first clamping ring pressure ring 304 is fastened by threaded cooperation; one side of the first adjustment frame movable part 307 is connected to the lens mounting part 306 by thread, and has multiple slots for mounting the second cylindrical pin 303, and the other side is mounted with the first plane constraint 308 through a prefabricated slot. Ensure that the adjustment mechanism fully constrains the optical element in the three degrees of freedom of optical axis, pitch and yaw; the first thread pair 309 is connected to the adjustment frame fixing part 310 through the metal retaining glue to reduce the influence of vibration and stress on the adjusted position of the optical element and improve the stability of the adjustment mechanism. At the same time, the first thread pair 309 cooperates with the first precision adjustment screw 311 to accurately adjust the position of the optical component on the first adjustment frame movable part 307, and cooperates with the first locking nut 312 to lock the adjusted position; the adjustment frame fixing part 310 is connected to the interferometer housing 1 through four countersunk holes on the outside to ensure the reference position of the optical element and facilitate fine adjustment of the optical element to achieve the best interference effect.

[0048] The laser introduction mechanism 4 is as follows Figure 6 and Figure 7As shown, it includes: a first right-angle prism 401, a collimating lens 402, a second retaining ring 403, a second fixing bolt 404, a laser diode 405, a laser diode mounting seat 406, a first circuit interface board fixing bolt 407, a laser driving circuit interface board 408, a laser housing 409, a laser introduction optical path housing 410, a first bolt 411, and a first right-angle prism baffle 412. The first right-angle prism 401 is installed at a predetermined position at the bottom of the laser introduction optical path housing 410 to ensure the direction and height of the optical path after deflection; the collimating lens 402 is installed at a predetermined position in the middle section of the laser introduction optical path housing 410 and is fastened by a second retaining ring pressure ring 403; the second retaining ring pressure ring 403 is an annular structure, and cooperates with the internal thread of the laser introduction optical path housing 410 through an external thread; the laser diode 405 is a core component, and is connected to the laser drive circuit interface board 408 through a laser diode mounting seat 406, which is convenient for the installation and control of the laser; the laser housing 409 is connected through the first circuit interface board fixing bolt 407 and is ensured by thermal conductive silicone grease The laser diode 405 is in full contact with the laser housing 409 to transfer heat to the laser housing 409, which is made of copper and is designed with multiple bosses, and has good heat dissipation performance; the top of the laser introduction optical path housing 410 is designed with a flexible locking structure, and the laser housing 409 is fastened by the second fixing bolt 404. The laser introduction optical path housing 410 and the bottom of the laser housing 409 are matched with threads to adjust the distance between the laser diode 405 and the collimating lens 402 to ensure the laser collimation effect; the first right-angle prism baffle 412 is connected to the laser introduction optical path housing 410 by the first bolt 411 to ensure that the first right-angle prism 401 is fastened.

[0049] The laser extraction mechanism 5 is as follows Figure 8 and Fig. 9As shown, it includes: a second right-angle prism 501, a focusing lens 502, a third retaining ring 503, a third fixing bolt 504, a photodiode 505, a photodiode mounting seat 506, a second circuit interface board fixing bolt 507, a photoelectric conversion circuit interface board 508, a detector housing 509, a laser extraction optical path housing 510, a second bolt 511, and a second right-angle prism baffle 512. The second right-angle prism 501 is installed at a predetermined position at the bottom of the laser extraction optical path housing 510 to ensure accurate laser extraction; the focusing lens 502 is installed at a predetermined position in the middle section of the laser extraction optical path housing 510 and is fastened by a third clamping ring 503; the photodiode 505 is a core component, which is connected to the photoelectric conversion circuit interface board 508 through a photodiode mounting seat 506 to facilitate the installation and signal processing of the photodiode; the detector housing 509 is connected through the second circuit interface board fixing bolt 507; the top of the laser extraction optical path housing 510 is designed with a flexible locking structure, and the detector housing 509 is fastened by the third fixing bolt 504. The laser extraction optical path housing 510 and the bottom of the detector housing 509 are matched with threads to adjust the distance between the photodiode 505 and the focusing lens 502 to ensure the laser focusing effect; the second right-angle prism baffle 512 is connected to the laser extraction optical path housing 510 through a second bolt 511 to ensure that the second right-angle prism 501 is fastened.

[0050] The detector assembly 6 is as follows Fig.10 As shown, it includes: a fourth retaining ring 601, an aspheric lens 602, a lens mounting component 603, a lens adapter 604, a second locking nut 605, a detector adapter 606, a connecting bolt 607, and an infrared detector 608. The aspheric lens 602 is fastened in the lens mounting part 603 through the fourth retaining ring pressure ring 601; the lens mounting part 603 is connected to the interferometer housing 1 through 6 countersunk holes on the outside, and the central through hole is designed with threads for mounting the aspheric lens 602 and the lens adapter 604; the lens adapter 604 is connected to the lens mounting part 603 through external threads and connected to the detector adapter 606 through internal threads. A knurled pattern is designed on the outside of the lens adapter 604 for easy fastening. The distance between the infrared detector 608 and the aspheric lens 602 can be adjusted through threaded matching to obtain the best signal response; the second locking nut 605 is connected to the detector adapter 606 through threads to lock the relative position of the infrared detector 608 and the aspheric lens 602; the detector adapter 606 is connected to the infrared detector 608 through a connecting bolt 607.

[0051] The reflector installation adjustment mechanism 7 is as follows Fig.11 and Fig.12As shown, the reflector adjustment frame fixing part 701, the spherical steel ball 702, the reflector adjustment frame movable part 703, the lens mounting seat 704, the second reflector 705, the fifth retaining ring pressure ring 706, the third cylindrical pin 707, the second spring 708, the second plane constraint part 709, the second thread pair 710, the second precision adjustment screw 711, and the third locking nut 712. The reflector adjustment frame fixing part 701 is connected to the interferometer housing 1 through four countersunk holes on the outside to ensure the reference position of the optical element and facilitate fine adjustment of the optical element to achieve the best interference effect; the spherical steel ball 702 is installed through the stress between the reflector adjustment frame fixing part 701 and the reflector adjustment frame movable part 703 to constrain the relative distance between the two; one side of the reflector adjustment frame movable part 703 is connected to the lens mounting seat 704 through a thread, and a plurality of slots are provided to install the third cylindrical pin 707, and the other side is provided with a second plane constraint 709 through a prefabricated slot to ensure that the adjustment mechanism fully constrains the optical element in the three degrees of freedom of pitch and yaw; the lens mounting seat 704 is a ring-shaped internal hollow structure, which is pressed by a fifth clamping ring through a thread. The second reflector 705 is fixed to the lens mounting seat 704 through the fifth clamping ring 706; the second spring 708 is stretched by the third cylindrical pins 707 on both sides, and is used to connect the reflector adjustment frame movable part 703 and the reflector adjustment frame fixed part 701, and provide appropriate reset force during the adjustment process to ensure that the adjusted position is stable and unchanged; the second thread pair 710 is connected to the reflector adjustment frame fixed part 701 through the metal retaining glue, so as to reduce the influence of vibration and stress on the adjusted position of the optical element and improve the stability of the adjustment mechanism. At the same time, the second thread pair 710 cooperates with the second precision adjustment screw 711 to accurately adjust the position of the optical component on the reflector adjustment frame movable part 703, and cooperates with the third locking nut 712 to lock the adjusted position;

[0052] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0053] The present invention also has the following implementation modes based on the above:

[0054] In a further embodiment of the present invention, the mirror drive mechanism 2 is as follows: Figure 3 As shown, the position of the mounting baffle 208 in the rotating mirror mounting groove can be adjusted by adjusting the two rotating mirror fasteners 205, so as to facilitate the adjustment of the position of the rotating mirror 207 in the arc groove and realize the fixing and disassembly of the rotating mirror 207.

[0055] In a further embodiment of the present invention, the end mirror mounting adjustment mechanism 3 is as follows Figure 4 and Figure 5As shown, the first adjustment frame movable member 307 is located in the limiting groove of the adjustment frame fixing member 310, and the first adjustment frame movable member 307 is limited. The first adjustment frame movable member 307 and the adjustment frame fixing member 310 are connected by three first springs 302. The number and position of the first springs 302, the first cylindrical pin 301, the second cylindrical pin 303 and the first thread pair 309 are shown in FIG. Figure 4 and Figure 5 As shown, three of them are used in a triangular arrangement to improve the stability of connection and adjustment. By rotating the first precision adjustment screw 311, the first plane constraint 308 at the corresponding position can be pushed to adjust the first reflector 305.

[0056] In a further embodiment of the present invention, the detector assembly 6 is as follows Fig.10 As shown, the lens adapter 604 and the detector adapter 606 are threadedly connected and locked by a second locking nut 605. After loosening the second locking nut 605, the distance between the aspheric lens 602 and the infrared detector 608 can be adjusted.

[0057] In a further embodiment of the present invention, the reflector mounting adjustment mechanism 7 is as follows: Fig.11 and Fig.12 As shown, the reflector adjustment frame movable member 703 and the reflector adjustment frame fixed member 701 are connected by three second springs 708. The number and position of the second springs 708, the third cylindrical pin 707, the second thread pair 710 and the spherical steel ball 702 are shown in FIG. Fig.11 and Fig.12 As shown, three second springs 708 are used and arranged in a triangle to improve the stability of connection and adjustment. By rotating the second precision adjustment screw 711, the second plane restraint 709 at the corresponding position can be pushed to adjust the second reflector 705.

[0058] In a further embodiment of the present invention, the interferometer housing 1 adopts a hexagonal prism structure, and is optimized and designed according to the structural characteristics of the optical system of the rotary interferometer. On the one hand, the shape of the hexagonal prism can greatly reduce the use of materials and reduce the overall weight of the device; on the other hand, the shape of the hexagonal prism is also convenient for the connection between other mechanisms and the housing and the adjustment of the installation of optical devices.

[0059] In a further embodiment of the present invention, threaded holes are reserved at the positions of the interferometer housing 1 that match the various devices, and the mirror drive mechanism 2 and other devices are designed with screw countersunk holes for fixing with screws.

[0060] In a further embodiment of the present invention, there is no detection between the optical signal and the electrical signal in the rotating mirror driving mechanism 2, the end mirror installation and adjustment mechanism 3, and the reflector installation and adjustment mechanism 7, and the optical signal is only reflected or refracted through these mechanisms. The laser diode 405 in the laser introduction mechanism 4 converts the electrical signal into an optical signal and introduces the laser into the optical system. The photodiode 505 in the laser extraction mechanism 5 and the infrared detector 608 in the detector assembly 6 convert the laser signal and the optical signal to be measured into an electrical signal.

[0061] In a further embodiment of the present invention, the first reflector 305 reflects the optical signal and returns it along the original path.

[0062] In a further embodiment of the present invention, the first right angle prism 401 deflects the collimated laser by 90 degrees and introduces it into the optical system. The collimating lens 402 collimates the divergent laser emitted by the laser diode. The laser diode 405 converts the electrical signal into an optical signal and emits a single-frequency laser. The first right angle prism baffle 412 is used to fix the first right angle prism 401, and is made of metal material and is opaque.

[0063] In a further embodiment of the present invention, the second right-angle prism 501 deflects the laser reflected back from the optical system by 90 degrees and leads it out of the optical system. The focusing lens 502 focuses the laser on the photosensitive surface element of the photodiode 505. The photodiode 505 converts the received laser signal into an electrical signal. The second right-angle prism baffle 512 is used to fix the second right-angle prism 501, and is made of metal material and is opaque.

[0064] In a further embodiment of the present invention, the aspherical lens 602 focuses the infrared signal to be measured in the optical system onto the photosensitive surface element of the infrared detector 608, and the infrared detector 608 converts the received infrared light signal into an electrical signal for output.

[0065] In a further embodiment of the present invention, the second reflector 705 deflects the laser light emitted by the laser introduction mechanism 4 and the optical signal collected by the system to facilitate the operation of the system and generate an interference signal.

[0066] In a further embodiment of the present invention, the optical path inside the device is as follows: after the light enters the internal cavity of the interferometer housing 1 through the laser introduction mechanism 4, it is reflected by the second reflector 705 in the reflector mounting and adjusting mechanism 7, passes through the rotating mirror 207 in the rotating mirror driving mechanism 2, reaches the first reflector 305 at the end mirror mounting and adjusting mechanism 3, and then returns along the original path, is deflected 90 degrees at the second right-angle prism 502 of the laser extraction mechanism 5, and the laser signal is focused on the photosensitive surface element of the photodiode 505 by the focusing lens 502.

[0067] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An optomechanical structure device for a rotary Fourier transform spectrometer, characterized in that: include: An interferometer housing (1), a rotating mirror driving mechanism (2), an end mirror mounting and adjusting mechanism (3), a laser introduction mechanism (4), a laser extraction mechanism (5), a detector assembly (6) and a reflector mounting and adjusting mechanism (7); the interferometer housing (1) is a hexagonal prism-shaped shell structure; the bottom surface of the interferometer housing (1) is connected to the instrument housing; a laser introduction mechanism (4), a laser extraction mechanism (5) and a rotating mirror driving mechanism (2) are mounted on the top surface of the interferometer housing (1); a reflector mounting and adjusting mechanism (7) is mounted on the left side and the right side of the interferometer housing (1); a detector assembly (6) is mounted on the left front side of the interferometer housing (1); and an end mirror mounting and adjusting mechanism (3) is mounted on the left rear side and the right rear side of the interferometer housing (1).

2. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The rotating mirror driving mechanism (2) comprises: a DC motor (201), a driving mechanism fixing member (202), a mounting seat connecting member (206), a rotating mirror (207), a mounting baffle (208) and a rotating mirror mounting seat (209). The driving mechanism fixing member (202) is mounted on an interferometer housing (1), the DC motor (201) is mounted at the bottom of the driving mechanism fixing member (202) and is located inside the interferometer housing (1), an output shaft of the DC motor (201) penetrates a through hole of the driving mechanism fixing member (202), and the rotating mirror mounting seat (209) is arranged on the driving mechanism fixing member (202). The mounting seat connecting piece (206) is mounted on the rotating mirror mounting seat (209) and is connected to the output shaft of the DC motor (201); the mounting seat connecting piece (206) is mounted on the rotating mirror mounting seat (209) and is surrounded by the rotating mirror mounting seat (209) to form a rotating mirror mounting groove; the rotating mirror mounting seat (209) is provided with an arc groove on the side facing the mounting seat connecting piece (206); the rotating mirror (207) is mounted in the arc groove; the mounting baffle (208) is mounted in the rotating mirror mounting groove; the mounting baffle (208) is used to limit the rotating mirror (207) in the arc groove; and a buffer gasket is provided on the side of the mounting baffle (208) facing the rotating mirror (207); The rotating mirror driving mechanism (2) further comprises: a countersunk bolt (203), a fixing bolt (204), a rotating mirror fastener (205) and a first fixing bolt (210); the DC motor (201) is mounted on the driving mechanism fixing member (202) via a plurality of countersunk bolts (203); the output shaft of the DC motor (201) is mounted in a bottom opening of a rotating mirror mounting seat (209) and is locked via a first fixing bolt (210); the mounting seat connecting member (206) is mounted on the rotating mirror mounting seat (209) via a plurality of fixing bolts (204); the mounting baffle (208) and the mounting seat connecting member (206) are connected via at least two rotating mirror fasteners (205); and the plurality of rotating mirror fasteners (205) are used to adjust the mounting baffle (208) to press the rotating mirror (207).

3. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The end mirror installation and adjustment mechanism (3) comprises: a first clamping ring (304), a first reflecting mirror (305), a lens mounting member (306), a first adjustment frame movable member (307) and an adjustment frame fixing member (310); the adjustment frame fixing member (310) is mounted on an interferometer housing (1); a limiting groove is provided on one side of the adjustment frame fixing member (310); the lens mounting member (306) is a cylindrical structure; the first reflecting mirror (305) is mounted in the lens mounting member (306) through the first clamping ring (304); the lens mounting member (306) is mounted on one end of the first adjustment frame movable member (307); the other end of the first adjustment frame movable member (307) is located in the limiting groove of the adjustment frame fixing member (310); and the lens mounting member (306) and the first adjustment frame movable member (307) are both located in the interferometer housing (1); The end mirror installation and adjustment mechanism (3) also includes: a first cylindrical pin (301), a first spring (302), a second cylindrical pin (303) and a first plane constraint (308); one end of the first adjustment frame movable member (307) is provided with a plurality of slots for installing the second cylindrical pin (303); the other end of the first adjustment frame movable member (307) is provided with a plurality of prefabricated slots for installing the first plane constraint (308); the other side of the adjustment frame fixed member (310) is provided with a plurality of slots for installing the first cylindrical pin (301); the plurality of first springs (302) are parallel to the axis of the first adjustment frame movable member (307) and all pass through the first adjustment frame movable member (307) and the adjustment frame fixed member (310); one end of each first spring (302) is connected to a first cylindrical pin (301), and the other end of each first spring (302) is connected to a second cylindrical pin (303); The end mirror installation adjustment mechanism (3) also includes: a first thread pair (309), a first precision adjustment screw (311) and a first locking nut (312); a plurality of first thread pairs (309) are installed on the adjustment frame fixing member (310); a first precision adjustment screw (311) is screwed into each first thread pair (309); a first locking nut (312) is screwed onto each first precision adjustment screw (311); and the end of the screw of each first precision adjustment screw (311) abuts against a first plane restraining member (308).

4. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The laser introduction mechanism (4) comprises: a laser driving circuit interface board (408), a laser housing (409) and a laser introduction optical path housing (410); the middle of the laser introduction optical path housing (410) is connected to the interferometer housing (1); the laser housing (409) is mounted on one end of the laser introduction optical path housing (410); and the laser driving circuit interface board (408) is mounted on the laser housing (409); The laser introduction mechanism (4) further comprises: a first right-angle prism (401), a collimating lens (402) and a second retaining ring (403); the first right-angle prism (401), the collimating lens (402) and the second retaining ring (403) are all arranged in a laser introduction optical path housing (410); the collimating lens (402) is installed in the middle of the laser introduction optical path housing (410) through the second retaining ring (403); and the first right-angle prism (401) is installed at the other end of the laser introduction optical path housing (410); The laser introduction mechanism (4) further comprises: a laser diode (405) and a laser diode mounting seat (406); the laser diode (405) and the laser diode mounting seat (406) are both arranged in a laser housing (409); the laser diode mounting seat (406) is connected to a laser driving circuit interface board (408); and the laser diode (405) is mounted on the laser diode mounting seat (406).

5. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 4, characterized in that: The laser introduction mechanism (4) further comprises: a second fixing bolt (404), a first circuit interface board fixing bolt (407), a first bolt (411) and a first right-angle prism baffle (412); the laser driving circuit interface board (408) and the laser housing (409) are connected via a plurality of first circuit interface board fixing bolts (407); the laser housing (409) and the laser introduction optical path housing (410) are flexibly locked and connected and locked via the second fixing bolt (404); the first right-angle prism baffle (412) is mounted at the other end of the laser introduction optical path housing (410) and is arranged in the interferometer housing (1); the first right-angle prism (401), the laser introduction optical path housing (410) and the first right-angle prism baffle (412) are connected via at least two first bolts (411).

6. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The laser extraction mechanism (5) comprises: a photoelectric conversion circuit interface board (508), a detector housing (509) and a laser extraction optical path housing (510); the middle of the laser extraction optical path housing (510) is connected to the interferometer housing (1); the detector housing (509) is mounted on one end of the laser extraction optical path housing (510); and the photoelectric conversion circuit interface board (508) is mounted on the detector housing (509); The laser extraction mechanism (5) further comprises: a second right-angle prism (501), a focusing lens (502) and a third retaining ring (503); the second right-angle prism (501), the focusing lens (502) and the third retaining ring (503) are all arranged in a laser extraction optical path housing (510); the focusing lens (502) is installed in the middle of the laser extraction optical path housing (510) through the third retaining ring (503); and the second right-angle prism (501) is installed at the other end of the laser extraction optical path housing (510); The laser extraction mechanism (5) further comprises: a photodiode (505) and a photodiode mounting seat (506); the photodiode (505) and the photodiode mounting seat (506) are both arranged in a detector housing (509); the photodiode mounting seat (506) is connected to a photoelectric conversion circuit interface board (508); and the photodiode (505) is mounted on the photodiode mounting seat (506).

7. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 6, characterized in that: The laser extraction mechanism (5) further comprises: a third fixing bolt (504), a second circuit interface board fixing bolt (507), a second bolt (511) and a second right-angle prism baffle (512); the photoelectric conversion circuit interface board (508) and the detector housing (509) are connected via a plurality of second circuit interface board fixing bolts (507); the detector housing (509) and the laser extraction optical path housing (510) are flexibly locked and connected and locked via the third fixing bolt (504); the second right-angle prism baffle (512) is mounted on the other end of the laser extraction optical path housing (510) and is arranged in the interferometer housing (1); and the second right-angle prism (501), the laser extraction optical path housing (510) and the second right-angle prism baffle (512) are connected via at least two second bolts (511).

8. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The detector assembly (6) comprises: a fourth retaining ring (601), an aspheric lens (602), a lens mounting member (603), a lens adapter (604), a second locking nut (605), a detector adapter (606), a connecting bolt (607), and an infrared detector (608). The lens mounting member (603) is connected to the interferometer housing (1). The aspheric lens (602) is mounted in the lens mounting member (603) via the fourth retaining ring (601). The end of the lens mounting member (603) is threadedly connected to the lens adapter (604). The detector adapter (606) is mounted on the end of the infrared detector (608) via a plurality of connecting bolts (607). The detector adapter (606) and the lens adapter (604) are threadedly connected and locked via the second locking nut (605). The spacing between the aspheric lens (602) and the infrared detector (608) is adjusted by adjusting the locking position of the second locking nut (605).

9. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 1, characterized in that: The reflector installation and adjustment mechanism (7) comprises: a reflector adjustment frame fixing member (701), a reflector adjustment frame movable member (703), a lens mounting seat (704), a second reflector (705) and a fifth clamping ring (706); the reflector adjustment frame fixing member (701) is connected to an interferometer housing (1); the lens mounting seat (704) is a cylindrical structure; the second reflector (705) is mounted in the lens mounting seat (704) through the fifth clamping ring (706); the lens mounting seat (704) is mounted on one end of the reflector adjustment frame movable member (703); the reflector adjustment frame fixing member (701) is arranged at the other end of the reflector adjustment frame movable member (703); the reflector adjustment frame movable member (703) and the lens mounting seat (704) are both located in the interferometer housing (1).

10. The optical-mechanical structure device for a rotary Fourier transform spectrometer according to claim 9, characterized in that: The reflector installation and adjustment mechanism (7) further comprises: a spherical steel ball (702), a third cylindrical pin (707), a second spring (708), and a second plane constraint member (709); one end of the reflector adjustment frame movable member (703) is provided with a plurality of slots for installing the third cylindrical pin (707); the other end of the reflector adjustment frame movable member (703) is provided with a plurality of prefabricated grooves for installing the second plane constraint member (709); a side surface of the reflector adjustment frame fixing member (701) facing away from the reflector adjustment frame movable member (703) is provided with a plurality of slots for installing the third cylindrical pin (707); a plurality of second plane constraint members (709) are provided with a plurality of prefabricated grooves for installing the second plane constraint member (709); The spring (708) is parallel to the axis of the reflector adjustment frame movable part (703) and passes through the reflector adjustment frame fixing part (701) and the reflector adjustment frame movable part (703); one end of each second spring (708) is connected to a third cylindrical pin (707) on the reflector adjustment frame movable part (703); the other end of each second spring (708) is connected to a third cylindrical pin (707) on the reflector adjustment frame fixing part (701); a rotatable spherical steel ball (702) is installed between the reflector adjustment frame fixing part (701) and the reflector adjustment frame movable part (703); The reflector installation adjustment mechanism (7) also includes: a second thread pair (710), a second precision adjustment screw (711) and a third locking nut (712); a plurality of second thread pairs (710) are installed on the reflector adjustment frame fixing member (701); a second precision adjustment screw (711) is screwed into each second thread pair (710); a third locking nut (712) is screwed onto each second precision adjustment screw (711); and the end of the screw of each second precision adjustment screw (711) abuts against a second plane restraining member (709).

Images