Laser World

A "double nozzle" in a laser head refers to a cutting nozzle with a two-layered design, where an inner layer controls the primary airflow directly onto the cutting area, while an outer layer provides additional air pressure to shield the focusing lens from debris and molten material during the laser cutting process; this allows for more precise control over gas flow and improved cutting quality, especially when working with thicker materials or requiring different gas mixtures. 

A focus lens in a laser head is a crucial optical component that concentrates the laser beam into a tiny, precise spot by refracting the light, allowing for clean and accurate interaction with the material being cut or engraved; essentially, it takes the divergent laser beam and focuses it to a single point, which is critical for achieving high-quality results in laser cutting and engraving applications.  engraving, micromachining, medical treatments, and optical research.

Laser focus lenses are designed to focus the laser light into a small, intense spot, allowing for efficient energy delivery, fine material processing, and high precision.