Focusing: The lens of a laser machine can focus the laser beam, allowing for a more concentrated energy and increased power density. This enables the formation of smaller and deeper focal points on the material, resulting in finer processing effects.
Guiding: Through reflection or refraction, the lens can direct the laser beam in a specific direction to meet various processing requirements. For example, in laser cutting, the lens can guide the laser beam to the desired cutting position, enabling precise cutting.