An adjustable optical path vibration isolation platform

Abstract

This utility model relates to the field of optical platform technology, and more particularly to an adjustable optical path vibration isolation platform. This utility model provides an adjustable optical path vibration isolation platform comprising legs, an active damping mechanism, a mounting frame, and a mounting bracket. The main body of the device is supported by four legs, which are distributed at the four corners of the bottom of the device. The legs have hollow cavities inside, and each leg is fixedly equipped with an active damping mechanism. A U-shaped frame is fixedly installed between the four active damping mechanisms. Mounting brackets are fixedly installed on the upper sides of the legs facing away from the U-shaped frame. This utility model uses vibration sensors for real-time monitoring, and a controller controls the active damping mechanisms on the legs to suppress various vibration frequencies in real-time during optical path experiments. Simultaneously, a magnetic optical path adjustment mechanism allows for convenient adjustment of the optical path position and height, achieving the effect of actively adapting to changes in the vibration environment and facilitating optical path adjustment.

Description

Technical Field

[0001] This utility model relates to the field of optical platform technology, and in particular to an adjustable optical path vibration isolation platform. Background Technology

[0002] Optical platforms, also known as optical breadboards or optical flat plates, are indispensable basic experimental platforms in modern precision optics, optoelectronics, laser technology, precision measurement, and micro-nano fabrication. Currently, passive vibration isolation platforms are widely used. Their basic principle is to use elastic and damping elements to form a low-pass filter, which mainly attenuates external vibration energy higher than the system's natural frequency. This type of platform has the advantages of relatively simple structure and relatively low cost.

[0003] However, the vibration isolation effect of this passive vibration isolation platform depends on the natural frequency and damping ratio. When the external vibration frequency changes, it may not be able to effectively suppress these new frequency vibrations, resulting in a decrease in the vibration isolation effect. Furthermore, in optical experiments, it is often necessary to finely adjust the position and angle of optical components to optimize the optical path. The adjustment operation on the passive vibration isolation platform will inevitably cause new vibrations, which will be directly transmitted to the optical components on the platform.

[0004] Therefore, it is necessary to design an adjustable optical path vibration isolation platform. Utility Model Content

[0005] In order to overcome the shortcomings of vibration isolation platforms that cannot actively adapt to changes in the vibration environment, this utility model provides an adjustable optical path vibration isolation platform.

[0006] The technical solution of this utility model is: an adjustable optical path vibration isolation platform, including legs, an active damping mechanism, a mounting frame, an electromagnetic actuator, a telescopic rod, a hinge block, a first spring, a fixing ring, a second spring, a top plate, a U-shaped frame, an optical platform, a vibration sensor, a controller, and a shelf. The main body of this device is supported by four legs, which are distributed at the four corners of the bottom of the device. The inside of each leg is a hollow cavity. An active damping mechanism is fixedly installed on each leg. A U-shaped frame is provided between the four active damping mechanisms. A telescopic rod is fixedly installed on the upper part of the inner cavity of each leg. Four hinge blocks are evenly fixed along the circumference at the upper part of the movable end of each telescopic rod. A fixing ring is fixedly connected to the upper end face of each leg. Spring 1 is radially hinged between the hinge block and the corresponding fixed ring. A top plate is fixedly connected to the movable end of the telescopic rod. Spring 2 is sleeved on the movable end of the telescopic rod. The two ends of spring 2 are fixedly connected to the upper end of the hinge block and the top plate, respectively. The top of each top plate is fixedly connected to the bottom surface of the U-shaped frame. A mounting bracket is fixedly installed on the upper part of each support leg. An electromagnetic actuator is fixedly installed on the upper part of each mounting bracket. The telescopic rod of each electromagnetic actuator abuts against the side wall of the U-shaped frame. A vibration sensor is fixedly installed in the middle of the U-shaped frame. An optical platform is fixedly installed on the U-shaped frame. A shelf is fixedly installed on the top of the optical platform. A controller is fixedly installed on the upper left side of the shelf. The controller is electrically connected to the vibration sensor and the electromagnetic actuator.

[0007] Furthermore, the bottom of the outriggers is covered with a non-slip rubber sleeve.

[0008] Furthermore, it also includes a support plate, slide rails, magnets, and optical path adjustment mechanisms. The support plate is fixedly installed on the optical platform. A certain number of notches are evenly opened on the support plate, and a magnet is fixed in each notch. On each of the four sides of the support plate, a slide rail is magnetically fixed by three magnets. The first optical path adjustment mechanism is magnetically fixed on the notch located in the center of the support plate, and the second optical path adjustment mechanism is slidably installed on the right slide rail.

[0009] Furthermore, it also includes damping material, with damping material embedded in the middle of the optical platform and a support plate located above the damping material.

[0010] Furthermore, the optical path adjustment mechanism includes a support rod, an adjusting screw, a mounting ring, and a screw rod. The adjusting screw is threaded on the upper front side of the support rod, and the mounting ring is slidably provided inside the support rod. The adjusting screw extends to the rear end inside the support rod and is in close contact with the rod-shaped part of the mounting ring located inside the support rod. Through this close contact method, the mounting ring is fixed to the support rod, and the screw rod is threaded on the upper end of the mounting ring.

[0011] Furthermore, it also includes power strips, with power strips fixed on both the left and right sides of the lower part of the shelf.

[0012] The beneficial effects are: This utility model uses a vibration sensor to monitor in real time, and the controller controls the active damping mechanism on the support leg to suppress various vibration frequencies in real time during the optical path experiment. At the same time, the magnetic optical path adjustment mechanism can conveniently adjust the position and height of the optical path, achieving the effect of actively adapting to changes in the vibration environment and conveniently adjusting the optical path. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a cross-sectional structural diagram of the support plate, damping material, and slide rail components of this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the components of this utility model, including the support leg, U-shaped frame, and vibration sensor.

[0016] Figure 4 This is a cross-sectional structural diagram of the hinge block, spring 1, and fixing ring of this utility model.

[0017] In the attached diagram, the following labels are used: 1-support leg, 2-active damping mechanism, 21-mounting bracket, 22-electromagnetic actuator, 23-telescopic rod, 24-hinge block, 25-spring one, 26-fixed ring, 27-spring two, 28-top plate, 3-U-shaped frame, 4-optical platform, 5-support plate, 51-damping material, 6-slide rail, 7-magnet, 71-optical path adjustment mechanism, 8-support rod, 9-adjusting screw, 10-mounting ring, 11-screw, 12-vibration sensor, 121-controller, 13-shelf, 14-power strip. Detailed Implementation

[0018] Example: An adjustable optical path vibration isolation platform, such as Figures 1-4As shown, the device includes four legs 1, an active damping mechanism 2, a mounting frame 21, an electromagnetic actuator 22, a telescopic rod 23, a hinge block 24, a spring 1 25, a fixing ring 26, a spring 27, a top plate 28, a U-shaped frame 3, an optical platform 4, a vibration sensor 12, a controller 121, and a shelf 13. The main body of the device is supported by four legs 1, which are distributed at the four corners of the bottom of the device. The inside of each leg 1 is a hollow cavity. An active damping mechanism 2 is fixed on each leg 1. A U-shaped frame 3 is provided between the four active damping mechanisms 2. A telescopic rod 23 is installed on the upper part of the inner cavity of each leg 1 by screws. Four hinge blocks 24 are evenly fixed to the upper part of the movable end of each telescopic rod 23 along the circumference. A fixing ring 26 is fixed to the upper end face of each leg 1. A spring 1 25 is radially hinged between each hinge block 24 and the corresponding fixing ring 26. A top plate 28 is fixedly connected to the movable end of the telescopic rod 23. A second spring 27 is sleeved on the movable end of the telescopic rod 23. The two ends of the second spring 27 are fixedly connected to the hinge block 24 and the top plate 28 respectively. The top of each top plate 28 is fixedly connected to the bottom surface of the U-shaped frame 3. Two mounting brackets 21 are installed on the upper part of each support leg 1 by screws. An electromagnetic actuator 22 is installed on the upper part of each mounting bracket 21 by screws. The movable end of each electromagnetic actuator 22 abuts against the side wall of the U-shaped frame 3. A vibration sensor 12 is fixedly installed in the middle of the U-shaped frame 3. An optical platform 4 is installed on the U-shaped frame 3 by screws. A shelf 13 is installed on the top of the optical platform 4 by screws. A controller 121 is installed on the upper left side of the shelf 13 by screws. The controller 121 is electrically connected to the vibration sensor 12 and the electromagnetic actuator 22. The bottom of the support leg 1 is provided with a rubber sleeve made of anti-slip material.

[0019] like Figure 1 and Figure 2 As shown, it also includes a support plate 5, a slide rail 6, a magnet 7, and an optical path adjustment mechanism 71. The support plate 5 is fixedly installed on the optical platform 4. A certain number of notches are evenly opened on the support plate 5. A magnet 7 is fixed in each notch. On each of the four sides of the support plate 5, a slide rail 6 is magnetically fixed by three magnets 7. The first optical path adjustment mechanism 71 is magnetically fixed on the notch located in the center of the support plate 5. The second optical path adjustment mechanism 71 is slidably installed on the right slide rail 6.

[0020] like Figure 2 As shown, it also includes a damping material 51. The damping material 51 is embedded in the middle of the optical platform 4, and the support plate 5 is located above the damping material 51.

[0021] like Figure 1 and Figure 2As shown, the optical path adjustment mechanism 71 includes a support rod 8, an adjusting screw 9, a mounting ring 10, and a screw 11. The adjusting screw 9 is threaded on the upper front side of the support rod 8, and the mounting ring 10 is slidably provided inside the support rod 8. The rear end of the adjusting screw 9 extends into the support rod 8 and is tightly attached to the rod-shaped part of the mounting ring 10 located inside the support rod 8. By this tight attachment, the mounting ring 10 is fixed to the support rod 8. The screw 11 is threaded on the upper end of the mounting ring 10.

[0022] like Figure 1 As shown, it also includes a power strip 14, and power strips 14 are fixedly installed on both the left and right sides of the lower part of the shelf 13.

[0023] This device will be used during experiments related to the optical platform 4. During the experiment, the controller 121 will be activated, and the vibration sensor 12 will automatically monitor the vibration frequency of the optical platform 4 in real time. When the vibration sensor 12 detects horizontal vibration, it will transmit the vibration data to the controller 121. After receiving the signal, the controller 121 will drive the movable end of the electromagnetic actuator 22 to extend and retract through an algorithm. The extension and retraction of the movable end will push the side wall of the U-shaped frame 3 to generate a force opposite to the direction of horizontal vibration, so as to actively counteract the horizontal vibration. When the optical platform 4 is subjected to vertical vibration, the vertical vibration force will be transmitted to the movable end of the telescopic rod 23 through the top plate 1 on the bottom surface of the U-shaped frame 3. When the movable end of the telescopic rod 23 slides up and down under force, the spring 27 sleeved on the movable end of the telescopic rod 23 will bear the main compression or tension force. At the same time, when the movable end of the telescopic rod 23 slides up and down, it will synchronously drive the part of the spring 25 that is hinged to the hinge block 24 to rotate. At this time, the spring 25 will be stretched and provide radial constraint force to passively counteract the optical platform 4. Under the vertical vibration force, during the optical path experiment, the array of magnets 7 on the support plate 5 allows the optical path adjustment mechanism 71 to be magnetically attracted to any notch as needed, and it can also be moved to any target position along the magnetic slide rail 6. In use, the light emitter is placed inside the mounting ring 10 on the support rod 8, and the light emitter is fixed by rotating the screw 11 downwards. When the optical path height needs to be adjusted, the adjusting screw 9 is turned forward to disengage from the mounting ring 10, releasing the fixation of the mounting ring 10. At this time, the mounting ring 10 is pulled upwards to adjust... Adjust its vertical height. After adjustment, turn the adjusting screw 9 backward to re-tighten the mounting ring 10 and fix it to the support rod 8. Optical instruments and other equipment can be placed on the shelf 13 during or after the experiment. The power strip 14 on the shelf 13 can provide additional power during the experiment. After the optical path experiment is completed, turn off the controller 121 to reset the moving end of the electromagnetic actuator 22. Spring 1 25 and Spring 2 27 will return to their original state through elastic recovery of balance. Then, the power to this device can be turned off.

Claims

1. A tunable optical path vibration isolation platform, characterized by: The device includes four legs (1), an active damping mechanism (2), a mounting frame (21), an electromagnetic actuator (22), a telescopic rod (23), a hinge block (24), a spring (25), a fixing ring (26), a spring (27), a top plate (28), a U-shaped frame (3), an optical platform (4), a vibration sensor (12), a controller (121), and a shelf (13). The main body of the device is supported by four legs (1), which are distributed at the four corners of the bottom of the device. The inside of each leg (1) is a hollow cavity. Each leg (1) is fixed with an active damping mechanism (2), and a U-shaped frame (3) is provided between the four active damping mechanisms (2). A telescopic rod (23) is fixedly installed on the upper part of the inner cavity of each leg (1). Each telescopic rod (23) has a movable end on its movable end. Each leg (1) is uniformly fixed with four hinge blocks (24) along the circumference. Each leg (1) is fixed with a fixing ring (26) on its upper end face. Each hinge block (24) and the corresponding fixing ring (26) are radially hinged with a spring (25). A top plate (28) is fixed to the movable end of the telescopic rod (23). A spring (27) is sleeved on the movable end of the telescopic rod (23). The two ends of the spring (27) are fixedly connected to the upper end of the hinge block (24) and the top plate (28) respectively. The top of each top plate (28) is fixedly connected to the bottom surface of the U-shaped frame (3). Each leg (1) is fixedly installed with a mounting frame (21). Each mounting frame (21) is fixedly installed with an electromagnetic actuator (22). The telescopic rod of each electromagnetic actuator (22) abuts against the side wall of the U-shaped frame (3). A vibration sensor (12) is fixedly installed in the middle of the U-shaped frame (3). An optical platform (4) is fixedly installed on the U-shaped frame (3). A shelf (13) is fixedly installed at the top of the optical platform (4). A controller (121) is fixedly installed on the upper left side of the shelf (13). The controller (121) is electrically connected to the vibration sensor (12) and the electromagnetic actuator (22).

2. The tunable optical path vibration isolation platform of claim 1, wherein: The bottom of the outrigger (1) is covered with a non-slip rubber sleeve.

3. The adjustable optical path vibration isolation platform as described in claim 2, characterized in that: It also includes a support plate (5), a slide rail (6), a magnet (7) and an optical path adjustment mechanism (71). The support plate (5) is fixedly installed on the optical platform (4). A certain number of notches are evenly opened on the support plate (5). A magnet (7) is fixedly installed in each notch. On the four sides of the support plate (5), a slide rail (6) is magnetically fixed between a certain number of magnets (7). The first optical path adjustment mechanism (71) is magnetically fixed on the notch located in the center of the support plate (5). The second optical path adjustment mechanism (71) is slidably installed on the right slide rail (6).

4. The adjustable optical path vibration isolation platform as described in claim 3, characterized in that: It also includes a damping material (51), the optical platform (4) is embedded in the middle of the damping material (51), and the support plate (5) is located at the upper end of the damping material (51).

5. The adjustable optical path vibration isolation platform as described in claim 4, characterized in that: The optical path adjustment mechanism (71) includes a support rod (8), an adjusting screw (9), a mounting ring (10), and a screw (11). The upper front side of the support rod (8) is threaded with an adjusting screw (9), and the support rod (8) is slidably provided with a mounting ring (10). The adjusting screw (9) extends to the rear end inside the support rod (8) and closely attaches to the rod-shaped part of the mounting ring (10) located inside the support rod (8). By this close attachment, the mounting ring (10) is fixed to the support rod (8). The upper end of the mounting ring (10) is threaded with a screw (11).

6. The adjustable optical path vibration isolation platform as described in claim 1, characterized in that: It also includes a power strip (14), and power strips (14) are fixed on both the left and right sides of the lower part of the shelf (13).

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