What’s LD+FAC+C-lens?

The most common technology used for consumer laser cutting and engraving machines is LD + C-lens. In LD+C-lens, light emitted from a semiconductor laser (LD) would be focused into a narrow laser beam with the assistance of a C-lens to realize cutting and engraving. In many cases, it would do the job well, but for challenging materials and projects, it requires more advanced technology to get the more focused and powerful beam to achieve the intended design. That’s the most important reason for the invention of LD+FAC+C-lens.

Since the light from an LD has a large divergence angle in the fast-axis direction, it can hardly be efficiently used unless being compressed. Though a C-lens would do part of the job, a large portion of light would just vanish during this process and fails to perform. To increase the light efficiency, a FAC lens is utilized to compress and collimate light to a more focused laser beam thus avoiding light depletion.