Gaussian beam measuring equipment

Abstract

The utility model relates to the technical field of laser measurement, and discloses Gaussian beam measuring equipment, which comprises a helium-neon laser transmitter, a camera, a guide platform, a mobile platform and a lens, the helium-neon laser transmitter is erected at one end of the guide platform; the camera is arranged on the moving platform, and the moving platform is arranged on the guide platform in a sliding mode in the length direction of the guide platform; and the lens is positioned on a connecting line between the helium-neon laser transmitter and the camera. A plurality of parts are combined, the helium-neon laser transmitter and the camera are arranged in an adjustable mode, the camera is movably arranged on the guide platform through the movable platform, fast assembly and adjustment are facilitated, compared with traditional integrated equipment, different devices can be replaced and maintained independently, and the cost is reduced. Different requirements in different teaching experiments can be met by replacing part of devices in the equipment, the expansibility is high, and the overall use efficiency and reliability of the equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser measurement technical field especially relates to a gauss light beam measuring equipment. BACKGROUND

[0002] Laser is a major invention of modern human, and has been widely used in various fields, and its actual value and potential efficiency are also increasingly prominent. Therefore, it is of great significance to conduct in-depth exploration and research on laser field technology.

[0003] Gauss light beam experiment is one of the basic experiments in the field of laser, in the teaching process of most schools at present, the traditional knife edge method is generally used to carry out the exploration experiment and measurement of gauss light beam, but this method has been far behind the development of current laser technology, and has problems such as complicated steps, low efficiency and limited precision, which cannot meet the requirements in the current teaching experiment and measurement process.

[0004] Therefore, it is urgent to provide a simple, efficient and high-precision gauss light beam measuring device to solve the problems in the prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a simple, efficient and high-precision gauss light beam measuring equipment, and the specific technical scheme is as follows:

[0006] A gauss light beam measuring equipment, comprising a helium-neon laser emitter, a camera, a guide platform, a moving platform and a lens;

[0007] The helium-neon laser emitter is erected at one end of the guide platform along the length direction, and the height and angle of the helium-neon laser emitter are adjustably arranged;

[0008] The camera is arranged on the moving platform, and the moving platform is slidably arranged on the guide platform along the length direction of the guide platform;

[0009] The lens is erected on one side of the guide platform along the width direction, and the lens is located on the line between the helium-neon laser emitter and the camera.

[0010] Preferably, the guide platform is provided with a guide rail along the length direction thereof, the moving platform is further provided with a guide groove matched with the guide rail, and the moving platform is slidably arranged on the guide rail through the guide groove.

[0011] Preferably, the moving platform is further provided with a stepping motor, and the guide platform is further provided with a synchronous belt along the length direction thereof; the output shaft of the stepping motor is in mesh transmission with the teeth on the synchronous belt through a synchronous gear.

[0012] The teeth of the timing belt are arranged on the side of the timing belt near the guide platform, and the two ends of the timing belt are respectively fixedly connected to the guide platform;

[0013] The synchronous gear is disposed between the synchronous belt and the guide platform and is pressed against the guide platform by the synchronous belt;

[0014] The mobile platform is also equipped with guide wheels, which are used to press the timing belt onto the timing gear and the guide platform, so that the timing gear can roll along the timing belt.

[0015] Preferably, the lens is a convex lens.

[0016] Preferably, the helium-neon laser emitter is mounted at one end of the guide platform in an adjustable manner via a telescopic bracket;

[0017] The camera is mounted on the mobile platform in an adjustable height via a telescopic bracket.

[0018] Preferably, it also includes a stepper motor driver board, which is connected to the stepper motor and used to control the movement of the stepper motor.

[0019] Preferably, the stepper motor driver board includes a driver module, a microcontroller, a serial port module, an OLED display interface, a step-down circuit, and a power supply module;

[0020] The driver module, serial port module, and OLED display interface are all connected to the microcontroller.

[0021] The microcontroller is also connected to the power supply module via a step-down circuit.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] (1) A Gaussian beam measuring device, comprising a helium-neon laser emitter, a camera, a guide platform, a moving platform, and a lens; the helium-neon laser emitter is mounted on one end of the guide platform along its length, and the height and angle of the helium-neon laser emitter are adjustable; the camera is mounted on the moving platform, and the moving platform is slidably mounted on the guide platform along its length; the lens is mounted on one side of the guide platform along its width, and the lens is located on the line connecting the helium-neon laser emitter and the camera. This invention employs a combination design of multiple components, with the helium-neon laser emitter and camera being adjustable. The camera is movably mounted on the guide platform via the moving platform, facilitating rapid assembly and adjustment. Compared to traditional integrated devices, different components can be replaced and repaired individually. This not only allows for the fulfillment of different needs in various teaching experiments by replacing some components, providing greater expandability, but also improves the overall efficiency and reliability of the equipment.

[0024] (2) This utility model is driven by a stepper motor controlled by a stepper motor drive board meshing with a synchronous belt on the guide platform. Combined with precise algorithms and automated circuits, it can automatically control the smooth movement of the mobile platform over a specified distance without the need for cumbersome manual guidance of the mobile platform, thus reducing the complexity of operation. It can measure more spot data of sampling points in a shorter time and construct a more accurate beam profile.

[0025] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the Gaussian beam measuring device of this utility model;

[0028] Figure 2 yes Figure 1 A partial assembly diagram;

[0029] Figure 3 yes Figure 1 A schematic diagram showing the connection between the stepper motor driver board and the motor.

[0030] In the diagram: 1. Helium-neon laser emitter; 2. Camera; 3. Guide platform; 4. Moving platform; 5. Lens; 6. Stepper motor; 7. Stepper motor driver board; 7.1. Driver module; 7.2. Microcontroller; 7.3. Serial port module; 7.4. OLED display interface; 7.5. Step-down circuit; 7.6. Power supply module; 8. Synchronous belt; 9. Synchronous gear; 10. Guide wheel. Detailed Implementation

[0031] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] refer to Figure 1A Gaussian beam measuring device includes a helium-neon laser emitter 1, a camera 2, a guide platform 3, a moving platform 4, and a lens 5. The helium-neon laser emitter 1 is mounted on one end of the guide platform 3 along its length, and the height and angle of the helium-neon laser emitter 1 are adjustable. The camera 2 is mounted on the moving platform 4, and the moving platform 4 is slidably mounted on the guide platform 3 along its length. The lens 5 is mounted on one side of the guide platform 3 along its width, and the lens 5 is located on the line connecting the helium-neon laser emitter 1 and the camera 2.

[0033] By combining multiple components in the above-mentioned design, the helium-neon laser emitter and camera are adjustable. The camera is movable on the guide platform via a mobile platform, which facilitates quick assembly and adjustment. Compared with traditional integrated equipment, different components can be replaced and repaired individually. This not only allows for different teaching experiments to meet different needs by replacing some components, but also provides greater scalability and improves the overall efficiency and reliability of the equipment.

[0034] The guide platform 3 is provided with a guide rail along its length, and the moving platform 4 is also provided with a guide groove that matches the guide rail. The moving platform 4 is slidably mounted on the guide rail through the guide groove. The moving platform 4 is also provided with a stepper motor 6, and the guide platform 3 is also provided with a synchronous belt 8 along its length. The output shaft of the stepper motor 6 is driven by the meshing of the synchronous gear 9 with the teeth on the synchronous belt 8.

[0035] The teeth of the synchronous belt 8 are disposed on the side of the synchronous belt 8 near the guide platform 3, and both ends of the synchronous belt 8 are fixedly connected to the guide platform 3. The synchronous gear 9 is disposed between the synchronous belt 8 and the guide platform 3 and is pressed against the guide platform 3 by the synchronous belt 8. The moving platform is also provided with a guide wheel 10, which is used to press the synchronous belt 8 against the synchronous gear 9 and the guide platform 3, and to allow the synchronous gear 9 to roll along the synchronous belt 8. With the above configuration, the output shaft of the stepper motor meshes with the synchronous belt on the guide platform through the synchronous gear, and its rotation drives the moving platform and the camera on it to move along the synchronous belt. The movement direction of the moving platform is then guided by the guide rail, resulting in smooth movement and precise controllable movement distance, which helps to improve the accuracy of Gaussian beam measurement.

[0036] Using the gear meshing between the timing belt and the timing pulley is more stable and precise than using a motor to directly drive the wheels to walk on the guide platform. It will not deviate vertically, and the measurement of the travel distance is also more accurate in open-loop control.

[0037] It also includes a stepper motor driver board 7, which is connected to the stepper motor 6 and is used to control the movement of the stepper motor 6.

[0038] refer to Figure 2 The stepper motor driver board 7 includes a driver module 7.1, a microcontroller 7.2, a serial port module 7.3, an OLED display interface 7.4, a step-down circuit 7.5, and a power supply module 7.6. The driver module 7.1, the serial port module 7.3, and the OLED display interface 7.4 are all connected to the microcontroller 7.2. The microcontroller 7.2 is also connected to the power supply module 7.6 through the step-down circuit 7.5.

[0039] In this embodiment, the stepper motor is controlled via a stepper motor driver board. The serial port module can send the current position of the moving platform to the computer for calculation. Combined with precise algorithms and automated circuitry, the platform board can be controlled to move smoothly a specified distance without the need for tedious manual movement. This reduces operational complexity and allows for the measurement of more sampling point spot data in a shorter time, resulting in a more accurate beam profile.

[0040] Lens 5 is a convex lens.

[0041] The helium-neon laser emitter 1 is mounted on one end of the guide platform 3 with adjustable height and angle via a telescopic bracket; the camera 2 is mounted on the moving platform 4 with adjustable height via a telescopic bracket. In this embodiment, the telescopic bracket adopts an existing telescopic sleeve design and is fixed by clips, thereby facilitating control of the height of the helium-neon laser emitter and camera, and improving the accuracy and versatility of the experiment.

[0042] The Gaussian beam measurement device in this embodiment integrates a high-precision stepper motor and precise displacement and speed control algorithms. By designing specific speed curves, it controls the motor's acceleration, constant speed, and deceleration processes to achieve smooth motion and precise position control. In this control method, the stepper motor's motion is divided into three stages: acceleration, constant speed, and deceleration. Initially, the speed is slow, gradually increasing or decreasing to the target speed over time, then maintaining a constant speed until near the endpoint, and finally decelerating again via a T-curve to a stop. Based on the speed curves, the number of pulses to be sent to the stepper motor in each time period is calculated, thereby controlling the motor's rotation angle and achieving precise and stable movement of the platform board. This allows for stable beam measurement under various complex experimental conditions.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model within the spirit and principles of the present utility model.

Claims

1. A Gaussian beam measuring device, characterized in that, It includes a helium-neon laser emitter (1), a camera (2), a guide platform (3), a moving platform (4), and a lens (5); The helium-neon laser emitter (1) is mounted on one end of the guide platform (3) along the length direction, and the height and angle of the helium-neon laser emitter (1) are adjustable. The camera (2) is mounted on the moving platform (4), which is slidably mounted on the guide platform (3) along the length of the guide platform (3); The lens (5) is mounted on the guide platform (3) and is located on the line connecting the helium-neon laser emitter (1) and the camera (2).

2. The Gaussian beam measuring device according to claim 1, characterized in that, The guide platform (3) is provided with a guide rail along its length direction, and the moving platform (4) is also provided with a guide groove that matches the guide rail. The moving platform (4) is slidably mounted on the guide rail through the guide groove.

3. A Gaussian beam measuring device according to any one of claims 1 or 2, characterized in that, The mobile platform (4) is also provided with a stepper motor (6), and the guide platform (3) is also provided with a synchronous belt (8) along its length direction; the output shaft of the stepper motor (6) is driven by the meshing of the synchronous gear (9) with the teeth on the synchronous belt (8).

4. The Gaussian beam measuring device according to claim 3, characterized in that, The teeth of the synchronous belt (8) are arranged on the side of the synchronous belt (8) close to the guide platform (3), and the two ends of the synchronous belt (8) are fixedly connected to the guide platform (3); The synchronous gear (9) is disposed between the synchronous belt (8) and the guide platform (3) and is pressed against the guide platform (3) by the synchronous belt (8); The mobile platform (4) is also provided with a guide wheel (10), which is used to press the synchronous belt (8) onto the synchronous gear (9) and the guide platform (3), so that the synchronous gear (9) can roll along the synchronous belt (8).

5. The Gaussian beam measuring device according to claim 4, characterized in that, It also includes a stepper motor drive board (7), which is connected to the stepper motor (6) and is used to control the movement of the stepper motor (6).

6. The Gaussian beam measuring device according to claim 5, characterized in that, The stepper motor driver board (7) includes a driver module (7.1), a microcontroller (7.2), a serial port module (7.3), an OLED display interface (7.4), a step-down circuit (7.5), and a power supply module (7.6); The driver module (7.1), serial port module (7.3), and OLED display interface (7.4) are all connected to the microcontroller (7.2); The microcontroller (7.2) is also connected to the power supply module (7.6) via a step-down circuit (7.5).

7. The Gaussian beam measuring device according to claim 1, characterized in that, The lens (5) is a convex lens.

8. The Gaussian beam measuring device according to claim 1, characterized in that, The helium-neon laser emitter (1) is mounted at one end of the guide platform (3) in an adjustable manner by means of a telescopic bracket; The camera (2) is mounted on the mobile platform (4) in an adjustable height via a telescopic bracket.

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