A galvanometer is an optical device based on the principles of reflection and refraction of light, which can adjust the direction of the optical path and beam through directional vibration. So what is the working principle of the galvanometer?
Basic structure
Usually composed of a mirror coated with reflective material (such as metal or glass) and an electromagnetic drive device. The lens is installed on a rotatable shaft, and the electromagnetic drive device is used to control the rotation angle of the lens.
Electromagnetic drive
The electromagnetic drive device uses electromagnetic force to drive the rotation of the lens. When the current passes through the electromagnetic drive device, an electromagnetic field is generated, which interacts with the magnetic material on the lens, causing the lens to rotate. By controlling the magnitude and direction of the current, the rotation angle and speed of the lens can be precisely controlled.
Optical reflection
When the beam of light shines on the mirror surface of the galvanometer, it will reflect according to the angle of incidence. Due to the rotation of the lens, the direction of the reflected beam will also change accordingly. The direction change of this reflected beam can be precisely controlled by adjusting the rotation angle of the lens.
Control system
Galvanometer is usually used in conjunction with a control system that can receive external signals (such as computer instructions or sensor data) and adjust the rotation angle and speed of the lens based on these signals. The control system can achieve precise control of the lens by adjusting the current size and direction of the electromagnetic drive device.
The above is an answer to the working principle of the galvanometer, hoping to be helpful to you. If you have any questions, please feel free to consult online or leave a message.
