Rapid assembling and adjusting device for space beam-combining reflector group

Abstract

The utility model discloses a rapid assembling and adjusting device for a space beam combining reflector group. The rapid assembling and adjusting device comprises a helium-neon laser (1), a total reflection mirror (2) with a center hole, a rotary table simulation mechanism (3), a reflector diaphragm (4), an autocollimator (5), an internal diaphragm (6), a beam combining box (7) and a primary mirror (8). A helium-neon laser (1), a total reflection mirror (2) with a center hole and an internal diaphragm (6) are coaxially installed on the rotary table simulation mechanism (3) from top to bottom. The rotary table simulation mechanism (3) is arranged at the center of the top surface of the beam combining box (7); the primary mirror (8) is arranged in the beam combining box (7) and is positioned right below the internal diaphragm (6); the mirror surface of the primary mirror (8) is provided with a reflector diaphragm (4); and the autocollimator (5) is erected outside the beam combining box (7), and the emergent light of the autocollimator (5) is consistent with the reflected light path of the primary mirror (8). According to the utility model, the autocollimator is adopted to replace laser of different wavebands, is not limited by the adjustment of the target wavebands, is suitable for the adjustment of the combined space beam combining system, and is wide in application range and strong in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of optoelectronic countermeasures technology and relates to a rapid assembly and adjustment device for a space beam combining reflector group. Background Technology

[0002] Active laser jamming systems are proactive jamming systems that use friendly lasers to interfere with or damage enemy equipment. With the continuous development of defense equipment, multi-band, high-power, and high-precision active laser jamming systems are gradually becoming mainstream for jamming or damaging enemy equipment with different operating wavelengths. Spatial beam combining, which combines multiple incoherent laser beams into a single beam in space through a designed optical path, is an effective method for achieving multi-channel, multi-band coaxial laser output.

[0003] Coarse adjustment of spatial beam combining relies primarily on mechanical structures, while fine adjustment relies on subsequent optical axis compensation. Due to the small travel and high precision of the optical axis compensation system, the assembly and adjustment stability of the spatial beam combining mirror assembly hardware must also maintain a high degree of angular deviation. The accuracy of the folding optical path of the spatial beam combining mirror assembly is a crucial parameter for determining the optical axis of the entire optical system, affecting the field of view and imaging quality. Influenced by shaft machining errors, optomechanical matching errors, optical system assembly and adjustment errors, and testing errors, current assembly and adjustment methods suffer from technical problems such as a lack of common reference transfer, complete reliance on manual experience, cumbersome operation processes, and difficulty in suppressing errors. This results in long beam combining assembly and adjustment cycles. Simply improving the precision of components is insufficient to shorten the assembly and adjustment cycle, or may lead to a sharp increase in costs.

[0004] Existing technology patent CN102901620 discloses a general-purpose high-precision laser beam combining system assembly and testing device and its application. This device uses a continuous focusing system to zoom different wavelength laser beams to achieve precise position detection of the spatial beam combining mirror group, and then the assembly and adjustment personnel adjust the optical components. However, because different wavelength lasers are used for adjustment, the assembly and adjustment personnel cannot monitor the optical path in real time during the assembly and adjustment operation, the assembly and adjustment time is long, and it can only realize the assembly and adjustment of laser beam combining systems in three wavelength bands: short-wave infrared, mid-wave infrared, and long-wave infrared, which has limitations. Utility Model Content

[0005] (a) Purpose

[0006] The purpose of this invention is to provide a rapid assembly and adjustment device for a space beam combiner mirror assembly, solving the problems of long assembly and adjustment time and high cost in the prior art.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides a rapid assembly and adjustment device for a space beam combiner mirror assembly, which includes a helium-neon laser 1, a total reflection mirror 2 with a central aperture, a turntable simulation mechanism 3, a mirror aperture 4, an autocollimator 5, an internal aperture 6, a beam combiner box 7, and a primary mirror 8. The helium-neon laser 1, the total reflection mirror 2 with a central aperture, and the internal aperture 6 are coaxially mounted on the turntable simulation mechanism 3 from top to bottom. The turntable simulation mechanism 3 is installed at the center of the top surface of the beam combiner box 7, and the primary mirror 8 is arranged inside the beam combiner box 7 and located directly below the internal aperture 6. The mirror aperture 4 is installed on the mirror surface of the primary mirror 8. The autocollimator 5 is mounted outside the beam combiner box 7, and the light emitted from the autocollimator 5 is consistent with the reflected light path of the primary mirror 8.

[0009] The turntable simulation mechanism 3 includes a helium-neon laser fixing mechanism 3-1, a total reflection mirror adjustment mechanism 3-2 with a central hole, a rotating platform 3-3, a turntable body 3-4, a turntable transfer mechanism 3-5, and an aperture fixture 3-7. The helium-neon laser fixing mechanism 3-1 is fixed above the turntable body 3-4; the total reflection mirror adjustment mechanism 3-2 with a central hole is fixed on the rotating platform 3-3; the rotating platform 3-3 is fixed on the turntable body 3-4; the aperture fixture 3-7 is fixed inside the turntable body 3-4; the turntable transfer mechanism 3-5 is fixed below the turntable body 3-4; the helium-neon laser 1 is mounted on the helium-neon laser fixing mechanism 3-1; the total reflection mirror 2 with a central hole is fixed on the total reflection mirror adjustment mechanism 3-2 with a central hole; and the internal aperture 6 is mounted in the groove of the aperture fixture 3-7.

[0010] The operating wavelength of the helium-neon laser 1 is 632.8 nm.

[0011] The diameters of the reflector aperture 4 and the internal aperture 6 are both between 0.1 mm and 0.5 mm.

[0012] The reflectivity of the total reflection mirror 2 with a central hole is greater than 99%.

[0013] The diameter of the central hole of the total reflection mirror 2 with a central hole is between 0.1 mm and 0.5 mm.

[0014] The rotating platform 3-3 can be directly connected to the load, with a positioning accuracy of ≤1 arc minute and a repeatability of ≤5 arc seconds.

[0015] The total reflection mirror adjustment mechanism 3-2 with a central hole is a two-axis adjustment mechanism with a locking mechanism. The adjustment range is ≥4° and the adjustment accuracy is ≥0.4° per revolution.

[0016] Among them, the helium-neon laser fixing mechanism 3-1 is fixed to the top of the turntable body 3-4 by the fourth screw 3-11; the total reflection mirror adjustment mechanism 3-2 with a center hole is fixed to the rotating platform 3-3 by the third screw 3-9; the rotating platform 3-3 is fixed to the turntable body by the second screw 3-8; the aperture fixture 3-7 is installed inside the turntable body 3-4 by the fifth screw 3-12; and the turntable transfer mechanism 3-5 is installed below the turntable body 3-4 by the first screw 3-6.

[0017] In this system, the helium-neon laser 1 emits a laser source that achieves two-point positioning on a straight line through the total reflection mirror 2 with a central aperture and the internal aperture 6. The installation position of the primary mirror 8 is adjusted so that the laser is reflected by the reflector aperture 4 and emitted from the beam combiner box 7 to the outside, thus completing the center positioning of the reflector. The internal aperture 6 and the reflector aperture 4 are removed, and an autocollimator 5 is installed outside the beam combiner box 7. The position of the total reflection mirror 2 with a central aperture is adjusted by the two-dimensional tilting mechanism 3-2, so that when the total reflection mirror 2 with a central aperture rotates on the rotating platform, the crosshairs at the center of the field of view of the autocollimator 5 draw a circle, and the radius of the circle read is the deviation value of the mirror installation angle. The installation position of the primary mirror 8 is finely adjusted so that the crosshairs image of the autocollimator 5 coincides with the crosshairs of the dividing plate, thus completing the mirror installation.

[0018] (III) Beneficial Effects

[0019] The rapid assembly and adjustment device for the space beam combiner mirror assembly provided by the above technical solution has the following beneficial effects:

[0020] (1) During the assembly and adjustment process, the assembly and adjustment personnel can adjust the reflector while monitoring the optical axis deviation in real time, which ensures the assembly and adjustment efficiency and reduces the product cost.

[0021] (2) The rapid assembly and adjustment device of this utility model uses a self-collimator instead of lasers of different wavelengths, and is not limited to the target wavelength of the assembly and adjustment. It is suitable for assembly and adjustment of combined space beam combining systems, has a wide range of applications and strong practicality.

[0022] (3) The quick assembly and adjustment device of this utility model does not require the internal laser to emit laser for detection, which saves assembly and adjustment resources and avoids the danger of high-power laser for assembly and adjustment. It is suitable for various experimental sites. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the turntable simulation mechanism of this utility model;

[0025] Figure 3 This is a bottom view of the turntable simulation mechanism of this utility model;

[0026] Figure 4 This is the optical path diagram for locating the geometric center of this utility model;

[0027] Figure 5 This is the optical path diagram for the angle positioning of this utility model. Detailed Implementation

[0028] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0029] Reference Figures 1 to 5 As shown, the rapid assembly and adjustment device for the space beam combiner mirror assembly in this embodiment includes a helium-neon laser 1, a total reflection mirror 2 with a central aperture, a turntable simulation mechanism 3, a mirror aperture 4, an autocollimator 5, an internal aperture 6, a beam combiner box 7, and a primary mirror 8. The helium-neon laser 1, the total reflection mirror 2 with a central aperture, and the internal aperture 6 are coaxially mounted on the turntable simulation mechanism 3 from top to bottom. The turntable simulation mechanism 3 is installed at the center of the top surface of the beam combiner box 7, and the primary mirror 8 is arranged inside the beam combiner box 7 and located directly below the internal aperture 6. The mirror aperture 4 is installed on the mirror surface of the primary mirror 8. The autocollimator 5 is mounted outside the beam combiner box 7, and the light emitted from the autocollimator 5 is consistent with the reflected light path of the primary mirror 8.

[0030] like Figure 2 As shown, the turntable simulation mechanism 3 includes a helium-neon laser fixing mechanism 3-1, a total reflection mirror adjustment mechanism 3-2 with a central hole, a rotating platform 3-3, a turntable body 3-4, a turntable transfer mechanism 3-5, and an aperture fixture 3-7. The helium-neon laser fixing mechanism 3-1 is fixed above the turntable body 3-4; the total reflection mirror adjustment mechanism 3-2 with a central hole is fixed on the rotating platform 3-3; the rotating platform 3-3 is fixed on the turntable body 3-4; the aperture fixture 3-7 is fixed inside the turntable body 3-4; the turntable transfer mechanism 3-5 is fixed below the turntable body 3-4; the helium-neon laser 1 is mounted on the helium-neon laser fixing mechanism 3-1, the total reflection mirror 2 with a central hole is fixed on the total reflection mirror adjustment mechanism 3-2 with a central hole, and the internal aperture 6 is mounted in the groove of the aperture fixture 3-7.

[0031] The operating wavelength of the helium-neon laser 1 is 632.8 nm.

[0032] The diameters of the reflector aperture 4 and the internal aperture 6 are both between 0.1 mm and 0.5 mm.

[0033] The reflectivity of the total reflection mirror 2 with a central hole is greater than 99%.

[0034] The diameter of the central hole of the total reflection mirror 2 with a central hole is between 0.1 mm and 0.5 mm.

[0035] The rotating platform 3-3 can be directly connected to the load, with a positioning accuracy of ≤1 arc minute and a repeatability of ≤5 arc seconds.

[0036] The total reflection mirror adjustment mechanism 3-2 with a center hole has a two-axis adjustment direction and a locking function, with an adjustment range of ≥4° and an adjustment accuracy of ≥0.4° per revolution.

[0037] The helium-neon laser fixing mechanism 3-1 is fixed to the top of the turntable body 3-4 by the fourth screw 3-11; the total reflection mirror adjustment mechanism 3-2 with a center hole is fixed to the rotating platform 3-3 by the third screw 3-9; the rotating platform 3-3 is fixed to the turntable body by the second screw 3-8; the aperture fixture 3-7 is installed inside the turntable body 3-4 by the fifth screw 3-12; and the turntable transfer mechanism 3-5 is installed below the turntable body 3-4 by the first screw 3-6.

[0038] The center positioning principle of the rapid assembly and adjustment device for the space beam combining mirror assembly in this embodiment is as follows: During the assembly and adjustment of the beam combining component, the internal aperture 6 is installed at the center of the aperture fixture 3-7 of the turntable simulation mechanism 3, and the mirror aperture 4 is installed on the mirror surface of the primary mirror 8. For example... Figure 4 As shown, the laser source emitted by the helium-neon laser 1 is positioned in a straight line by two points through the total reflection mirror 2 with a central hole and the internal aperture 6. The installation position of the main mirror 8 is adjusted so that the laser is reflected by the reflector aperture 4 and emitted from the beam combiner box 7 to the outside, thus completing the center positioning of the reflector.

[0039] The angle adjustment principle of the rapid assembly and adjustment device for space beam combiner mirrors: The laser autocollimation method is used to measure the deflection angle of the beam combiner components. Based on this deflection angle, the adjustment direction of the beam combiner system is determined, and the beam combiner component requiring adjustment is aligned with the optical axis of the beam combiner system. For example... Figure 5 As shown, remove the internal aperture 6 and the reflecting mirror aperture 4. Install an autocollimator 5 outside the beam combiner 7. Adjust the position of the total reflection mirror 2 with a central aperture using the two-dimensional tilting mechanism 3-2. When the rotating platform rotates, the crosshairs at the center of the autocollimator 5's field of view should form a circle. The radius of this circle is the deviation value of the mirror's adjustment angle. Fine-tune the installation position of the primary mirror 8 so that the crosshairs image of the autocollimator 5 coincides with the reticle of the dividing plate, thus achieving mirror adjustment.

[0040] Repeat the above steps to continue adjusting the position and angle of each channel reflector, and realize the assembly and adjustment of the spatial beam combining reflector.

[0041] As can be seen from the above technical solution, this utility model uses an autocollimator instead of lasers of different wavelengths, and uses the readings of the autocollimator for detection and adjustment, which improves the assembly and adjustment efficiency of the beam combiner and reflector, avoids the danger of using high-power lasers for assembly and adjustment, and visualizes the monitoring results, thereby improving the assembly and adjustment accuracy.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rapid assembly and adjustment device for a space beam combiner mirror assembly, characterized in that, The system includes a helium-neon laser (1), a total reflection mirror (2) with a central aperture, a turntable simulation mechanism (3), a reflector aperture (4), an autocollimator (5), an internal aperture (6), a beam combiner (7), and a primary mirror (8). The helium-neon laser (1), the total reflection mirror (2), and the internal aperture (6) are coaxially mounted on the turntable simulation mechanism (3) from top to bottom. The turntable simulation mechanism (3) is installed at the center of the top surface of the beam combiner (7), and the primary mirror (8) is arranged inside the beam combiner (7) and located directly below the internal aperture (6). The reflector aperture (4) is installed on the mirror surface of the primary mirror (8). The autocollimator (5) is mounted outside the beam combiner (7), and the light emitted from the autocollimator (5) is consistent with the light path reflected by the primary mirror (8).

2. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 1, characterized in that, The turntable simulation mechanism (3) includes a helium-neon laser fixing mechanism (3-1), a total reflection mirror adjustment mechanism with a center hole (3-2), a rotating platform (3-3), a turntable body (3-4), a turntable transfer mechanism (3-5), and an aperture fixture (3-7). The helium-neon laser fixing mechanism (3-1) is fixed above the turntable body (3-4); the total reflection mirror adjustment mechanism with a center hole (3-2) is fixed on the rotating platform (3-3); the rotating platform (3-3) is fixed on the turntable body (3-4); the aperture fixture (3-7) is fixed inside the turntable body (3-4); the turntable transfer mechanism (3-5) is fixed below the turntable body (3-4); the helium-neon laser (1) is installed on the helium-neon laser fixing mechanism (3-1), the total reflection mirror (2) with a center hole is fixed on the total reflection mirror adjustment mechanism (3-2), and the internal aperture (6) is installed in the groove of the aperture fixture (3-7).

3. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 2, characterized in that, The operating wavelength of the helium-neon laser (1) is 632.8 nm.

4. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 3, characterized in that, The diameters of the reflector aperture (4) and the internal aperture (6) are both between 0.1 mm and 0.5 mm.

5. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 4, characterized in that, The reflectivity of the total reflection mirror (2) with a central hole is greater than 99%.

6. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 5, characterized in that, The diameter of the central hole of the total reflection mirror (2) with a central hole is between 0.1 mm and 0.5 mm.

7. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 6, characterized in that, The rotating platform (3-3) can be directly connected to the load, with a positioning accuracy of ≤1 arc minute and a repeatability of ≤5 arc seconds.

8. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 7, characterized in that, The total reflection mirror adjustment mechanism (3-2) with a center hole is a two-axis adjustment mechanism with a locking mechanism. The adjustment range is ≥4° and the adjustment accuracy is ≥0.4° per revolution.

9. The rapid assembly and adjustment device for the space beam combiner mirror assembly as described in claim 8, characterized in that, The helium-neon laser fixing mechanism (3-1) is fixed above the turntable body (3-4) by the fourth screw (3-11); the total reflection mirror adjustment mechanism (3-2) with a center hole is fixed on the rotating platform (3-3) by the third screw (3-9); the rotating platform (3-3) is fixed on the turntable body by the second screw (3-8); the aperture fixture (3-7) is installed inside the turntable body (3-4) by the fifth screw (3-12); the turntable transfer mechanism (3-5) is installed below the turntable body (3-4) by the first screw (3-6).

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