The focusing lens of a laser cutting machine is a consumable item. If it still cannot achieve a high level of cleanliness after multiple cleaning cycles, it should be replaced to ensure the processing efficiency of the laser cutting machine and avoid delaying production.

Laser is a single wavelength light source with good coherence performance, which has a wide range of applications in scientific research and industry. Laser optics refers to optical components and devices used in the internal and external optical paths of lasers, such as laser focusing mirrors, reflecting mirrors, beam expanding mirrors, and laser cutting heads. In order to enable friends to intuitively understand the concepts of laser focusing and collimation.