Optical elements with total magnification x4. Commonly they are used to decrease beam divergence, as a consequence beam diameter will increase in size. For the best performance, all of the lenses surfaces are coated with an anti-reflection coating.
Smallest but still powerful laser head from PLH3D series. PLH3D-2W is a medium power laser head equipped with 450 nm laser diode and high-resolution lens. Compact design and very lightweight (70 grams) allow installing the laser head even in small and delicate machines. Driver equipped with LED informs the user when the laser head is armed.