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

Abstract

The invention 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 invention, 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 high in practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of photoelectric countermeasures and relates to a rapid assembly and adjustment device for a space beam combining reflector group. Background Art

[0002] Laser active jamming system is an active jamming system that uses its own laser to interfere with or destroy enemy equipment. With the continuous development of national defense equipment, multi-band, high-power, and high-precision laser active jamming systems have gradually become mainstream in order to interfere with or destroy enemy equipment with different working wavelengths. Spatial beam combining combines multiple incoherent laser beams into one beam in space by designing the optical path. It is an effective method to obtain laser coaxial output with multi-channel and multi-band lasers in stages.

[0003] The coarse adjustment of spatial beam combining is mainly guaranteed by the mechanical structure, while the fine adjustment depends on the optical axis compensation in the later stage. Since the optical axis compensation system has a small stroke and high precision, the stable adjustment accuracy of the hardware of the spatial beam combining reflector group must also ensure a high angle deviation. The accuracy of the folded optical path of the spatial beam combining reflector group is an important parameter for determining the optical axis of the entire optical system, which is related to the field of view size and imaging quality of the entire optical system. Affected by the axis processing error, optical-mechanical matching error, optical system adjustment error, and test error, the existing adjustment has technical problems such as lack of common reference transfer, complete reliance on manual experience, cumbersome operation process, and difficulty in suppressing errors, resulting in a long beam combining adjustment cycle. It is difficult to shorten the adjustment cycle by only improving the accuracy of parts, or it will lead to a sharp increase in costs.

[0004] Patent CN102901620 in the prior art discloses a universal high-precision laser beam combining system adjustment detection device and its application. This device uses a continuous focusing system to zoom laser beams of different wavelengths to achieve precise position detection of the spatial beam combining reflector group, and then the adjustment personnel adjust the optical components. However, due to the use of lasers of different wavelengths for adjustment, the adjustment personnel cannot monitor the optical path in real time during the adjustment operation, and the adjustment time is relatively long. It can only achieve the adjustment of laser beam combining systems of three wavelength bands: short-wave infrared, medium-wave infrared, and long-wave infrared, which has limitations.

[0005] content

[0006] 1. Purpose

[0007] The purpose of the present invention is to provide a fast adjustment device for a spatial beam combining reflector group, so as to solve the problems of long adjustment time and high cost in the prior art.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the present invention provides a rapid adjustment device for a spatial beam combining mirror group, which includes a helium-neon laser 1, a total reflector with a center hole 2, a turntable simulation mechanism 3, a reflector aperture 4, an autocollimator 5, an internal aperture 6, a beam combining box 7, and a primary mirror 8; on the turntable simulation mechanism 3, the helium-neon laser 1, the total reflector with a center hole 2, and the internal aperture 6 are coaxially installed from top to bottom; the turntable simulation mechanism 3 is installed at the center of the top surface of the beam combining box 7, and the primary mirror 8 is arranged in the beam combining box 7 and is 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 combining box 7, and the light emitted by the autocollimator 5 is consistent with the light path reflected by the primary mirror 8.

[0010] Wherein, the turntable simulation mechanism 3 includes a helium-neon laser fixing mechanism 3-1, a total reflection mirror adjustment mechanism 3-2 with a center hole, a rotating platform 3-3, a turntable body 3-4, a turntable switching mechanism 3-5, and an aperture tooling 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 center hole is fixed on the rotating platform 3-3; the rotating platform 3-3 is fixed on the turntable body 3-4; the aperture tooling 3-7 is fixed inside the turntable body 3-4; the turntable switching 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 with a center hole, and the internal aperture 6 is installed in the groove of the aperture tooling 3-7.

[0011] Wherein, the operating wavelength of the He-Ne laser 1 is 632.8 nm.

[0012] Wherein, the diameters of the reflector aperture 4 and the internal aperture 6 are both between 0.1 mm and 0.5 mm.

[0013] Wherein, the reflectivity of the total reflective mirror 2 with a central hole is greater than 99%.

[0014] Wherein, the diameter of the center hole of the total reflective mirror 2 with a center hole is between 0.1 mm and 0.5 mm.

[0015] Among them, the rotating platform 3-3 can be directly connected to the carrier, with a positioning accuracy of ≤1 arc minute and a repeat positioning accuracy of ≤5 arc seconds.

[0016] The total reflective mirror adjustment mechanism 3-2 with a center hole is a two-axis adjustment mechanism, on which a locking mechanism is provided, with an adjustment range of ≥4° and an adjustment accuracy of ≥0.4° per turn.

[0017] Among them, the He-Ne laser fixing mechanism 3-1 is fixed above the turntable body 3-4 by the fourth screw 3-11; the full-reflective 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 tooling 3-7 is installed inside the turntable body 3-4 by the fifth screw 3-12; the turntable switching mechanism 3-5 is installed below the turntable body 3-4 by the first screw 3-6.

[0018] Among them, the laser light source emitted by the helium-neon laser 1 is realized by the total reflector 2 with a center hole and the internal aperture 6 to realize the positioning of two points in a straight line, and 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 combining box 7 to the outside, thereby completing the center positioning of the reflector; the internal aperture 6 and the reflector aperture 4 are removed, and an autocollimator 5 is set up outside the beam combining box 7, and the position of the total reflector 2 with a center hole is adjusted by the two-dimensional tilting mechanism of the total reflector adjustment mechanism 3-2 with a center hole, so that when the total reflector 2 with a center hole rotates on the rotating platform, the crosshairs image at the center of the field of view of the autocollimator 5 draws a circle, and the read radius of the circle is the deviation value of the reflector adjustment angle; the installation position of the main mirror 8 is fine-tuned so that the crosshairs image of the autocollimator 5 coincides with the crosshairs of the differentiation plate, thereby realizing the reflector adjustment.

[0019] (III) Beneficial effects

[0020] The rapid adjustment device for the spatial beam combining reflector group provided by the above technical solution has the following beneficial effects:

[0021] (1) During the installation process of the rapid installation device of the present invention, the installer can monitor the optical axis deviation in real time and adjust the reflector at the same time, thereby ensuring the installation efficiency and reducing the product cost.

[0022] (2) The rapid adjustment device of the present invention adopts an autocollimator to replace lasers of different wavelength bands, is not limited to the adjustment target wavelength band, is suitable for the adjustment of combined space beam combining systems, has a wide range of applications, and is highly practical.

[0023] (3) The rapid adjustment device of the present invention does not need to adjust the internal laser to emit laser for detection, which not only saves adjustment resources but also avoids the danger of high-power laser adjustment, and is suitable for a variety of experimental sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the turntable simulation mechanism of the present invention;

[0026] Figure 3 A bottom view of the turntable simulation mechanism of the present invention;

[0027] Figure 4 Positioning the optical path diagram for the geometric center of the present invention;

[0028] Figure 5 This is the angle positioning light path diagram of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation mode of the present invention is further described in detail below in conjunction with the drawings and embodiments.

[0030] Reference Figures 1 to 5 As shown, the rapid adjustment device of the spatial beam combining mirror group of this embodiment includes a helium-neon laser 1, a total reflector with a center hole 2, a turntable simulation mechanism 3, a reflector aperture 4, an autocollimator 5, an internal aperture 6, a beam combining box 7, and a primary mirror 8; on the turntable simulation mechanism 3, the helium-neon laser 1, the total reflector with a center hole 2, and the internal aperture 6 are coaxially mounted from top to bottom; the turntable simulation mechanism 3 is mounted at the center of the top surface of the beam combining box 7, and the primary mirror 8 is arranged in the beam combining box 7 and is located directly below the internal aperture 6; the reflector aperture 4 is mounted on the mirror surface of the primary mirror 8; the autocollimator 5 is mounted outside the beam combining box 7, and the light emitted by the autocollimator 5 is consistent with the light path reflected by the primary mirror 8.

[0031] like Figure 2 As shown, the turntable simulation mechanism 3 includes a helium-neon laser fixing mechanism 3-1, a full-reflection mirror adjustment mechanism 3-2 with a center hole, a rotating platform 3-3, a turntable body 3-4, a turntable switching mechanism 3-5, and an aperture tooling 3-7; the helium-neon laser fixing mechanism 3-1 is fixed above the turntable body 3-4; the full-reflection mirror adjustment mechanism 3-2 with a center hole is fixed on the rotating platform 3-3; the rotating platform 3-3 is fixed on the turntable body 3-4; the aperture tooling 3-7 is fixed inside the turntable body 3-4; the turntable switching 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 full-reflection mirror 2 with a center hole is fixed on the full-reflection mirror adjustment mechanism 3-2 with a center hole, and the internal aperture 6 is installed in the groove of the aperture tooling 3-7.

[0032] Wherein, the operating wavelength of the He-Ne laser 1 is 632.8 nm.

[0033] The diameters of the reflector aperture 4 and the internal aperture 6 are both between 0.1 mm and 0.5 mm.

[0034] The reflectivity of the total reflective mirror 2 with a central hole is greater than 99%.

[0035] The diameter of the center hole of the total reflective mirror 2 with a center hole is between 0.1 mm and 0.5 mm.

[0036] The rotating platform 3 - 3 can be directly connected to the carrier, with a positioning accuracy of ≤ 1 arc minute and a repeat positioning accuracy of ≤ 5 arc seconds.

[0037] The full-mirror adjustment mechanism 3-2 with a center hole has a two-axis adjustment direction and a locking function, an adjustment range of ≥4°, and an adjustment accuracy of ≥0.4° per turn.

[0038] The He-Ne laser fixing mechanism 3-1 is fixed on the top of the turntable body 3-4 by the fourth screw 3-11; the full-reflective 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 tooling 3-7 is installed inside the turntable body 3-4 by the fifth screw 3-12; the turntable switching mechanism 3-5 is installed below the turntable body 3-4 by the first screw 3-6.

[0039] The central positioning principle of the rapid adjustment device for the spatial beam combining reflector assembly of this embodiment is as follows: when adjusting the beam combining assembly, the internal aperture 6 is installed at the center of the aperture tooling 3-7 of the turntable simulation mechanism 3, and the reflector aperture 4 is installed on the mirror surface of the primary mirror 8. Figure 4 As shown, the laser light source emitted by the helium-neon laser 1 is positioned in a straight line at two points through the total reflective mirror 2 with a center 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 combining box 7 to the outside, completing the center positioning of the reflector.

[0040] The angle adjustment principle of the fast adjustment device of the space beam combining reflector group is: the laser autocollimation method is used to measure the deflection angle of the beam combining component, and then the debugging direction of the beam combining system is determined according to the deflection angle, and the beam combining component that needs to be adjusted is aligned with the optical axis of the beam combining system. Figure 5 As shown, the internal aperture 6 and the reflector aperture 4 are removed, and the autocollimator 5 is set outside the beam combining box 7. The position of the total reflector 2 with a center hole is adjusted by the two-dimensional tilt mechanism of the total reflector adjustment mechanism 3-2 with a center hole, so that when the total reflector 2 with a center hole rotates on the rotating platform, the crosshairs image at the center of the field of view of the autocollimator 5 draws a circle, and the read radius of the circle is the deviation value of the reflector adjustment angle. The installation position of the fine-tuning primary mirror 8 is made so that the crosshairs image of the autocollimator 5 coincides with the crosshairs of the differentiation plate, so as to achieve the reflector adjustment.

[0041] Repeat the above steps to continue adjusting the position and angle of the reflectors in each channel to achieve the spatial beam combining reflector assembly adjustment.

[0042] It can be seen from the above technical scheme that the present invention adopts an autocollimator to replace lasers of different bands, and uses the autocollimator readings for detection and debugging, which improves the efficiency of the beam-combining reflector assembly adjustment, avoids the danger of high-power laser adjustment, and visualizes the monitoring results to improve the adjustment accuracy.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rapid adjustment device for a spatial beam combining reflector assembly, characterized in that: The invention comprises a helium-neon laser (1), a total reflector with a center hole (2), a turntable simulation mechanism (3), a reflector aperture (4), an autocollimator (5), an internal aperture (6), a beam combining box (7), and a primary mirror (8); the helium-neon laser (1), the total reflector with a center hole (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 mounted at the center of the top surface of the beam combining box (7), and the primary mirror (8) is arranged in the beam combining box (7) and is located directly below the internal aperture (6); the reflector aperture (4) is mounted on the mirror surface of the primary mirror (8); the autocollimator (5) is mounted outside the beam combining box (7), and the light emitted by the autocollimator (5) is consistent with the light path reflected by the primary mirror (8).

2. The rapid adjustment device for a spatial beam combining reflector assembly according to claim 1, characterized in that: The turntable simulation mechanism (3) comprises a helium-neon laser fixing mechanism (3-1), a fully reflective mirror with a center hole adjusting mechanism (3-2), a rotating platform (3-3), a turntable body (3-4), a turntable switching mechanism (3-5), and an aperture tooling (3-7); the helium-neon laser fixing mechanism (3-1) is fixed above the turntable body (3-4); the fully reflective mirror with a center hole adjusting mechanism (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 tooling (3-7) is fixed inside the turntable body (3-4); the turntable switching 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 fully reflective mirror with a center hole (2) is fixed on the fully reflective mirror with a center hole adjusting mechanism (3-2), and the internal aperture (6) is mounted in a groove of the aperture tooling (3-7).

3. The rapid adjustment device for a spatial beam combining reflector assembly as claimed in claim 2, characterized in that: The operating wavelength of the helium-neon laser (1) is 632.8 nm.

4. The rapid adjustment device for a spatial beam combining reflector assembly as claimed 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 adjustment device for a spatial beam combining reflector assembly as claimed in claim 4, characterized in that: The reflectivity of the total reflective mirror (2) with a central hole is greater than 99%.

6. The rapid adjustment device for a spatial beam combining reflector assembly as claimed in claim 5, characterized in that: The diameter of the center hole of the total reflective mirror (2) with a center hole is between 0.1 mm and 0.5 mm.

7. The rapid adjustment device for a spatial beam combining reflector assembly according to claim 6, characterized in that: The rotating platform (3-3) can be directly connected to the carrier, with a positioning accuracy of ≤1 arc minute and a repeat positioning accuracy of ≤5 arc seconds.

8. The rapid adjustment device for a spatial beam combining reflector assembly as claimed in claim 7, characterized in that: The total reflective mirror adjustment mechanism with a central hole (3-2) is a two-axis adjustment mechanism, on which a locking mechanism is arranged, with an adjustment range of ≥4° and an adjustment accuracy of ≥0.4° per turn.

9. The rapid adjustment device for a spatial beam combining reflector assembly as claimed in claim 8, characterized in that: The helium-neon laser fixing mechanism (3-1) is fixed above the turntable body (3-4) by a fourth screw (3-1) 1; the full-reflection mirror adjustment mechanism (3-2) with a center hole is fixed on the rotating platform (3-3) by a third screw 3-9; the rotating platform (3-3) is fixed on the turntable body by a second screw 3-8; the aperture tooling (3-7) is installed inside the turntable body (3-4) by a fifth screw (3-1) 2; and the turntable switching mechanism (3-5) is installed below the turntable body (3-4) by a first screw (3-6).

10. The rapid adjustment device for a spatial beam combining reflector assembly according to claim 9, characterized in that: A helium-neon laser (1) emits a laser light source through a total reflector with a center hole (2) and an internal aperture (6) to realize two-point positioning of a straight line, and the installation position of a primary mirror (8) is adjusted so that the laser is reflected by a reflector aperture (4) and emitted from a beam combining box (7) to the outside, thereby completing the center positioning of the reflector; the internal aperture (6) and the reflector aperture (4) are removed, and an autocollimator (5) is set up outside the beam combining box (7); the position of the total reflector with a center hole (2) is adjusted through a two-dimensional tilting mechanism of a total reflector with a center hole adjustment mechanism (3-2), so that when the total reflector with a center hole (2) rotates on a rotating platform, a crosshair image at the center of the field of view of the autocollimator (5) draws a circle, and the radius of the circle read out is the deviation value of the reflector adjustment angle; the installation position of the primary mirror (8) is finely adjusted so that the crosshair image of the autocollimator (5) coincides with the crosshair lines of the differentiation plate, thereby achieving the reflector adjustment.

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