, Laser Beam Expander are mainly used in Laser processing systems to expand the laser beam diameter and reduce the laser beam divergence angle. Laser Beam Expander are usually used in conjunction with field lenses. Compared with unexpanded beams, expanded beams can be focused smaller. Laser beam expansion collimator magnification that beam diameter Magnification. We provide Beam Expander, namely fixed multiple Beam Expander, adjustable divergence angle Beam Expander and continuous magnification Beam Expander.