Optical axis adjusting platform device of laser measuring and illuminating device

Abstract

The utility model provides a laser illuminator optical axis adjusting platform device, which comprises a laser illuminator body and a tooling plate, a marble platform is arranged at the upper end of the tooling plate, the laser illuminator body and a square tube front lens clung to the leaning surface of the side surface of the laser illuminator body are arranged at the upper end of the marble platform, and the laser illuminator body and the square tube front lens are arranged at the lower end of the tooling plate. A collimator is arranged in front of the laser illuminator body, a target sheet center is arranged on one side of the collimator, a parallelism adjusting mechanism is arranged at the bottom of the tool plate and comprises a locking nut, a supporting rod and a base, the locking nut is in threaded connection with the base, and the supporting rod is arranged on the base. The height and the stability of the laser illuminator are precisely adjusted by arranging the locking nut, the supporting rod and the base, the wedge-shaped lens assembly is arranged, a set of wedge-shaped lenses are additionally arranged in front of a laser emitting lens, and the optical axis can be finely adjusted in a high-precision mode by rotating the wedge-shaped lenses, so that the optical axis is parallel to the datum plane, and more convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical axis adjustment, in particular to an optical axis adjustment platform device for a laser illuminator. Background Art

[0002] In the application fields of laser ranging and laser illuminators, the laser optical axis is an important parameter affecting the accuracy of target ranging or indication. If the optical axis deviation exceeds a certain range, problems such as large ranging errors or target missing may occur. The non-parallelism of the laser emission optical axis to the installation reference plane is usually required to be no more than 0.1 - 0.5 mrad. Among them, the highest requirement is for some airborne platforms, with the requirement of no more than 0.1 mrad in the pitch or azimuth direction. In order to meet this technical index requirement, during the overall debugging process of the laser illuminator, precise adjustment of the emission and beam expansion optical lens is required, which requires a sufficiently high flatness, sufficient stability and precise adjustment function for the contact surface of the environment where the laser is located. In addition, for the laser itself, when the laser emits from the cavity, the optical axis should also be ensured to be as perpendicular as possible to the emission lens.

[0003] For the existing optical axis adjustment platform device of a laser illuminator, when debugging the laser, it is usually placed on an aluminum alloy tooling plate, and the tooling plate is padded or a lifting table is placed below. This direct padding method is inconvenient for adjustment, and general lifting tables are not stable enough, which has a great impact on the debugging results. Due to the cumulative error of structural parts, it is difficult to ensure that the optical axis is perpendicular to the emission lens. The existing technology is to continuously adjust the position of the emission lens to emit the laser parallel to the reference installation plane (platform). This debugging method is difficult, cumbersome and time-consuming.

[0004] Therefore, when debugging the optical axis of a laser, high requirements are placed on the accuracy and stability of the platform. To improve the debugging method, it is necessary to rely on an adjustable platform or device to precisely adjust the parallelism between the laser optical axis and the installation reference plane. Summary of the Utility Model

[0005] The problem to be solved by the utility model is the problem of inconvenient adjustment of the test platform accuracy and cumbersome and time-consuming debugging method.

[0006] To solve the above technical problems, the present utility model provides a laser illuminator optical axis adjustment platform device, which includes a laser illuminator body and a tooling plate. A marble platform is provided at the upper end of the tooling plate. The laser illuminator body and a square tube front mirror closely attached to the side abutting surface of the laser illuminator body are provided on the upper end of the marble platform. A collimator is provided in front of the laser illuminator body, and a target paper center is provided on one side of the collimator. A parallelism adjustment mechanism is provided at the bottom of the tooling plate. The parallelism adjustment mechanism includes a locking nut, a support rod, and a base. The locking nut is threadedly connected to the base, the support rod is slidably connected to the base and abuts against the top of the locking nut, and the bottom of the tooling plate is rotatably connected to the upper end of the support rod. A wedge mirror assembly is provided in the inner cavity of the laser illuminator body, and an emission lens is provided at the laser emission end of the laser illuminator body. The wedge mirror assembly includes a wedge mirror frame, a wedge lens, a wedge mirror support, and a screw. The wedge mirror support is installed inside the laser illuminator body, the wedge lens is installed in the wedge mirror frame, the laser emitted from the laser emission end of the laser illuminator body sequentially passes through the wedge lens and the emission lens, the screw is connected to the wedge mirror support to press the wedge mirror frame, and the wedge mirror frame is rotatably connected to the wedge mirror support. The angle of the wedge lens is adjusted by rotating the wedge mirror frame on the outer surface of the laser illuminator body.

[0007] Preferably, the center of the reticle of the square tube front mirror coincides with the center of the target paper on the focal plane of the collimator.

[0008] Preferably, a plurality of positioning holes are provided on the tooling plate.

[0009] Preferably, the marble platform is made of 00-grade marble material.

[0010] Preferably, the size of the marble platform is 400 in length × 300 in width.

[0011] Preferably, the number of the parallelism adjustment mechanisms is four and they are respectively provided at the four bottom corners of the bottom of the tooling plate.

[0012] Preferably, a floor foot is rotatably connected to the bottom of the base.

[0013] Preferably, the catadioptric mirror in the collimator is perpendicular to the marble platform, and the horizontal direction of the marble platform is perpendicular to the cross section of the catadioptric mirror.

[0014] Preferably, mounting holes are respectively provided at the four bottom corners of the bottom of the tooling plate, and the upper end of the support rod is rotatably connected to the mounting holes.

[0015] Preferably, the upper end of the support rod has a support plate that abuts against the bottom of the mounting hole.

[0016] Compared with the prior art, the present utility model provides a laser illuminator optical axis adjustment platform device, which has the following beneficial effects:

[0017] 1. The utility model adjusts the height and stability of the laser illuminator precisely by setting a locking nut, a support rod, and a base. By rotating the locking nut on the base, the locking nut rises or falls in the vertical direction of the base, changing the support height at the bottom of the support rod, thereby changing the height of the support rod. The height of the support rod is fixed by locking the locking nut with the base. By setting a marble platform, the laser illuminator and the square tube front mirror are placed on the marble platform. Utilizing the characteristics that marble is less affected by environmental temperature or vibration disturbances and has a small expansion coefficient, it is beneficial to ensure the consistency of optical axis adjustment. By setting a wedge mirror assembly, a set of wedge mirror assemblies is added in front of the emission lens of the laser. By rotating the wedge lens, the optical axis can be finely adjusted with high precision, thereby making the optical axis parallel to the reference plane, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the installation structure of the laser illuminator body of the present utility model;

[0019] Figure 2 is the first structural block diagram of the adjustment platform device of the present utility model;

[0020] Figure 3 is the second structural block diagram of the adjustment platform device of the present utility model;

[0021] Figure 4 is a schematic diagram of the structure of the parallelism adjustment mechanism of the present utility model;

[0022] Figure 5 is a schematic diagram of the internal structure of the laser illuminator body of the present utility model;

[0023] Figure 6 is a schematic diagram of the structure of the wedge mirror assembly of the present utility model.

[0024] In the figure: 1. Laser illuminator body; 2. Tooling plate; 3. Marble platform; 4. Square tube front mirror; 5. Collimator; 6. Center of the target paper; 7. Parallelism adjustment mechanism; 71. Locking nut; 72. Support rod; 73. Base; 8. Wedge mirror assembly; 81. Wedge mirror frame; 82. Wedge lens; 83. Wedge mirror bracket; 84. Screw; 9. Emission lens; 10. Positioning hole; 11. Anchor; 12. Mounting hole; 13. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model relates to a laser illuminator optical axis adjustment platform device, as Figure 1-6As shown in the figure, it includes a laser rangefinder body 1 and a tooling plate 2. At the upper end of the tooling plate 2, there is a marble platform 3. At the upper end of the marble platform 3, there are a laser rangefinder body 1 and a square tube front mirror 4 closely attached to the side abutting surface of the laser rangefinder body 1. In front of the laser rangefinder body 1, there is a collimator 5. On one side of the collimator 5, there is a target paper center 6. At the bottom of the tooling plate 2, there is a parallelism adjustment mechanism 7. The parallelism adjustment mechanism 7 includes a locking nut 71, a support rod 72, and a base 73. The locking nut 71 is threadedly connected to the base 73. The support rod 72 is slidably connected to the base 73 and abuts against the top of the locking nut 71. The bottom of the tooling plate 2 is rotatably connected to the upper end of the support rod 72. Inside the laser rangefinder body 1, there is a wedge mirror assembly 8. At the laser emission end of the laser rangefinder body 1, there is an emission lens 9. The wedge mirror assembly 8 includes a wedge mirror frame 81, a wedge mirror lens 82, a wedge mirror support 83, and a screw 84. The wedge mirror support 83 is installed inside the laser rangefinder body 1. The wedge mirror lens 82 is installed in the wedge mirror frame 81. The laser emitted from the laser emission end of the laser rangefinder body 1 passes through the wedge mirror lens 82 and the emission lens 9 in sequence. The screw 84 is connected to the wedge mirror support 83 to press the wedge mirror frame 81, and the wedge mirror frame 81 is rotatably connected to the wedge mirror support 83. By rotating the wedge mirror frame 8 outside the surface of the laser rangefinder body 1, the angle of the wedge mirror lens 82 is adjusted. By setting the marble platform 3, the laser rangefinder body 1 and the square tube front mirror 4 are placed on the marble platform 3. Utilizing the characteristics of marble being less affected by environmental temperature and vibration disturbances and having a small expansion coefficient, it is beneficial to ensure the consistency of optical axis adjustment. The laser rangefinder body 1 to be debugged is placed on the marble platform 3, and a square tube front mirror 4 is placed at the side abutting surface. Through the square tube front mirror 4, observe the target paper center 6 at the focal plane of the collimator 5. Adjust the positions of the laser rangefinder body 1 and the square tube front mirror 4 so that the cross of the reticle center of the square tube front mirror 4 coincides with the crosshair of the target paper center 6 at the focal plane of the collimator 5. The laser emission end in the inner cavity of the laser rangefinder body 1 emits laser, and passes through the wedge mirror 8, then through the emission lens 9, enters the collimator 5 and is reflected onto the target paper. By adjusting the wedge mirror assembly 8 in front of the emission lens 9, the laser is adjusted to the target paper center 6. By rotating the locking nut 71 on the base 73, the locking nut 71 rises or falls in the vertical direction of the base 73, changing the support height at the bottom of the support rod 72, thereby changing the height of the support rod 72. By locking the locking nut 71 and the base 73, the height of the support rod 72 is fixed, thereby precisely adjusting the height and stability of the laser rangefinder body 1. By setting the wedge mirror assembly 8, a wedge mirror assembly 8 is added between the laser rangefinder body 1 and the emission lens 9. By rotating the wedge mirror frame 81, the angle of the wedge mirror lens 82 is adjusted. Using the connection between the screw 84 and the wedge mirror support 83 to press the wedge mirror frame 81, and utilizing the refraction effect of the wedge mirror lens 82 on the optical path at different angles, high-precision fine adjustment of the optical axis can be achieved, thereby making the optical axis parallel to the reference plane, which is more convenient.

[0026] In an embodiment of the present utility model, the center of the reticle of the square tube front mirror 4 coincides with the center 6 of the focal plane target paper of the collimator 5. By setting the above structure, the optical axis of the marble platform 3 is calibrated.

[0027] In an embodiment of the present utility model, a plurality of positioning holes 10 are provided on the tooling plate 2. By setting the positioning holes, the positioning accuracy of the marble platform 3 on the tooling plate 2 is improved.

[0028] In an embodiment of the present utility model, the marble platform 3 is made of 00-grade marble. By setting the above structure, taking advantage of the high stability, high hardness, and low water absorption of 00-grade marble, the adjustment accuracy of the optical axis of the laser illuminator is improved.

[0029] In an embodiment of the present utility model, the size of the marble platform 3 is 400 in length × 300 in width. By setting the above structure, the size of the marble platform 3 is limited, enhancing the stability of the equipment.

[0030] In an embodiment of the present utility model, the number of the parallelism adjustment mechanisms 7 is four and they are respectively arranged at the four bottom corners of the bottom of the tooling plate 2. By setting the above structure, the stability of the tooling plate 2 is improved.

[0031] In an embodiment of the present utility model, a floor foot 11 is rotatably connected to the bottom of the base 73. By setting the floor foot 11, the contact area between the bottom of the base 73 and the ground is increased, improving the stability of the base 73 on the ground.

[0032] In an embodiment of the present utility model, the parabolic mirror in the collimator 5 is vertically placed on the marble platform 3, and the horizontal direction of the marble platform 3 is perpendicular to the cross-section of the parabolic mirror. By setting the above structure, the parallelism of the platform is adjusted.

[0033] In an embodiment of the present utility model, mounting holes 12 are respectively provided at the four bottom corners of the bottom of the tooling plate 2, and the upper end of the support rod 72 is rotatably connected to the mounting holes 12. By setting the mounting holes 12 and rotatably connecting the support rod 72 with the mounting holes 12, the stability of the connection between the support rod 72 and the tooling plate 2 is improved, which is beneficial to the stable adjustment of the tooling plate 2.

[0034] In an embodiment of the present utility model, the upper end of the support rod 72 is provided with a support plate 13 that abuts against the bottom of the mounting hole 12. By setting the support plate 13, the contact area between the support rod 72 and the mounting hole 12 is increased, thereby improving the stability of the connection between the support rod 72 and the mounting hole 12.

[0035] In use, first, in the first step, set up the device. Screw the four bases 73 into the floor feet 11, screw the locking nuts 71 onto the bases 73, then sleeved the support rods 72 on the bases 73, mate the tooling plate 2 with the support rods 72, insert the upper ends of the support rods 72 into the mounting holes 12, ensure that the support plate 13 abuts against the bottom of the mounting holes 12, place the marble platform 3 on the tooling plate 2 so that the marble platform 3 and the incident window of the collimator 5 are centered, then place the laser illuminator body 1 to be debugged on the marble platform 3, and place a square tube front mirror 4 at the side abutting surface. Second, adjust the parallelism of the platform. Place a high-precision level on the marble platform 3, and adjust the marble platform 3 to be level (≤0.02 mm / m) by repeatedly adjusting the support rods 72, and lock the support rods 72 with the locking nuts 71. At this time, it is also necessary to check whether the reflecting mirror in the collimator 5 is vertically placed on the optical platform to ensure that the horizontal direction of the marble platform 3 is perpendicular to the cross section of the reflecting mirror. Third step: align the optical axis of the platform. Next, perform the optical axis alignment. Place the laser illuminator body 1 on the marble platform 3, and at the same time place one side of the square tube front mirror 4 against the side reference of the laser illuminator body 1 on the marble platform 3. Observe the center 6 of the target paper at the focal plane of the collimator 5 through the square tube front mirror 4, and adjust the positions of the laser illuminator body 1 and the square tube front mirror 4 so that the center cross of the reticle of the square tube front mirror 4 coincides with the cross line of the center 6 of the target paper at the focal plane of the collimator 5. Fourth step: adjust the laser optical axis. Finally, adjust the laser optical axis. The laser illuminator body 1 emits pulsed laser, which is reflected and focused by the collimator 5 and hits the target paper on the focal plane. By adjusting a set of wedge mirror assemblies 8 in front of the emitting lens 9 until the center of the laser spot is finely adjusted to coincide with the cross line of the center 6 of the target paper of the collimator 5. At this time, observed through the square tube front mirror 4, it can be seen that the cross in the square tube front mirror 4 coincides with the cross line of the target paper center 6 and the center of the laser spot, that is, the optical axis adjustment is achieved. Theoretically, when it is strictly coincident, it proves that the optical axis is parallel to the installation reference plane at this time. There is a certain error in reality. The distances in the X and Y directions of the center of the laser spot deviating from the center of the cross line of the target paper can be read out through the vernier scale on the precision three-dimensional adjustment frame for fixing the target paper, and ensure that the value calculated by dividing this distance value by the focal length of the collimator 5 is not greater than 0.1 mrad.

[0036] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A light axis adjustment platform device for a laser illuminator, comprising a laser illuminator body (1) and a tooling plate (2), characterized in that, At the upper end of the tooling plate (2), there is a marble platform (3). At the upper end of the marble platform (3), there are a laser illuminator body (1) and a square tube front mirror (4) closely attached to the side abutting surface of the laser illuminator body (1). In front of the laser illuminator body (1), there is a collimator (5). On one side of the collimator (5), there is a target paper center (6). At the bottom of the tooling plate (2), there is a parallelism adjusting mechanism (7). The parallelism adjusting mechanism (7) includes a locking nut (71), a support rod (72), and a base (73). The locking nut (71) is threadedly connected to the base (73). The support rod (72) is slidably connected to the base (73) and abuts against the top of the locking nut (71). The bottom of the tooling plate (2) is rotatably connected to the upper end of the support rod (72). Inside the laser illuminator body (1), there is a wedge mirror assembly (8). At the laser emission end of the laser illuminator body (1), there is an emission lens (9). The wedge mirror assembly (8) includes a wedge mirror frame (81), a wedge mirror lens (82), a wedge mirror support (83), and a screw (84). The wedge mirror support (83) is installed inside the laser illuminator body (1). The wedge mirror lens (82) is installed in the wedge mirror frame (81). The laser emitted from the laser emission end of the laser illuminator body (1) sequentially passes through the wedge mirror lens (82) and the emission lens (9). The screw (84) is connected to the wedge mirror support (83) to press the wedge mirror frame (81), and the wedge mirror frame (81) is rotatably connected to the wedge mirror support (83). The angle of the wedge mirror lens (82) is adjusted by rotating the wedge mirror frame (81) on the outer surface of the laser illuminator body (1).

2. The optical axis adjustment platform device of a laser irradiator according to claim 1, characterized in that: The reticle center of the square tube front mirror (4) coincides with the focal plane target paper center (6) of the collimator (5).

3. The optical axis adjustment platform device of a laser illuminator according to claim 1, characterized in that: A plurality of positioning holes (10) are provided on the tooling plate (2).

4. The optical axis adjustment platform device of a laser illuminator according to claim 1, characterized in that: The marble platform (3) is made of 00-grade marble material.

5. The optical axis adjustment platform device of a laser illuminator according to claim 1, characterized in that: The size of the marble platform (3) is 400 in length × 300 in width.

6. The optical axis adjustment platform device of a laser illuminator according to claim 1, characterized in that: The number of the parallelism adjusting mechanisms (7) is four, and they are respectively arranged at the four bottom corners of the bottom of the tooling plate (2).

7. A light axis adjustment platform device for a laser illuminator according to claim 1, characterized in that: The bottom of the base (73) is rotatably connected to a floor foot (11).

8. A light axis adjustment platform device for a laser illuminator according to claim 1, characterized in that: The reflecting mirror in the collimator (5) is perpendicular to the marble platform (3), and the horizontal direction of the marble platform (3) is perpendicular to the cross-section of the reflecting mirror.

9. The optical axis adjustment platform device of a laser illuminator according to claim 1, characterized in that: Mounting holes (12) are respectively provided at the four bottom corners of the bottom of the tooling plate (2), and the upper end of the support rod (72) is rotatably connected to the mounting holes (12).

10. The optical axis adjustment platform device of a laser illuminator according to claim 9, characterized in that: The upper end of the support rod (72) has a support plate (13) that abuts against the bottom of the mounting hole (12).

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