An overview of laser cleaning machines
Laser cleaning machines are widely used in various industries for the removal of dirt, rust, and other contaminants from various surfaces. These machines use high-powered lasers to achieve efficient and precise cleaning without causing damage to the cleaned surfaces. Inside a laser cleaning head, there are two main components: the field lens and the focusing lens.
The field lens
The field lens, also known as the objective lens, is responsible for expanding the laser beam to a larger diameter. This lens is typically made of high-quality glass or plastic and is designed to withstand high laser powers. The field lens is usually located at the beginning of the laser cleaning head, closest to the laser source.
The focusing lens
The focusing lens, also known as the imaging lens, is used to concentrate the expanded laser beam onto a smaller spot. This is essential for achieving high power density and efficient cleaning. The focusing lens is typically made of high-refractive-index glass and is designed to provide a sharp and well-defined focal point. The focusing lens is usually located towards the end of the laser cleaning head, close to the surface to be cleaned.
The difference between the field lens and focusing lens
The main difference between the field lens and focusing lens inside a laser cleaning head is their function. The field lens is responsible for expanding the laser beam, while the focusing lens is responsible for focusing the beam onto a smaller spot. Both lenses are crucial for achieving efficient and precise cleaning, and their proper alignment is essential for optimal performance.
In conclusion, the field lens and focusing lens in a laser cleaning head perform different but complementary functions. The field lens expands the laser beam, allowing for a larger cleaning area, while the focusing lens concentrates the beam onto a smaller spot, providing higher power density and precision cleaning. Understanding the difference between these two lenses is key to optimizing the performance of laser cleaning machines.
