Telecentric scan lenses are designed so that the beam always hits the surface to be machined almost vertically. This is particularly important for drilling holes, e.g. through-holes on printed circuit boards. High-quality lenses ensure that the drilled hole is also perpendicular to the surface outside the center of the scan field. Telecentric lenses from Sill Optics are also crucial for structuring work on the PCB, as they ensure that the focus of the laser remains circular even at the edge of the field of view. Sill lenses are therefore ideally suited for applications such as laser cutting of cell phone screens, camera protection lenses, flexible printed circuit boards, soldering tasks and much more.