Laser beam expander is a lens assembly which can change the diameter and divergence angle of laser beam. The laser beam emitted from the laser has a certain divergence angle. For laser processing, only by adjusting the beam expander to make the laser beam become collimated (parallel) beam, can the focus lens be used to obtain small high power density spot; in laser ranging, the collimation degree of the laser must be improved to the maximum extent through the beam expander, and the ideal long-distance measurement effect can be obtained The over beam expander can change the beam diameter for different optical instruments; the beam expander with spatial filter can change the asymmetric beam distribution into symmetric distribution and make the light energy distribution more uniform.

As an indispensable optical component in the laser marking system, what is the function of the beam expander? Beam expander is a lens assembly which can change the diameter and divergence angle of laser beam. The laser beam emitted from the laser has a certain divergence angle. For laser processing, only by adjusting the beam expander to make the laser beam become collimated (parallel) beam, can the focus lens be used to obtain small high power density spot; in laser ranging, the collimation degree of the laser must be improved to the maximum extent through the beam expander, and the ideal long-distance measurement effect can be obtained; The beam diameter can be changed by the beam expander to be used in different optical instruments; the beam expander combined with spatial filter can change the asymmetric beam distribution into symmetric distribution and make the light energy distribution more uniform.

Composed of two or more lenses, the size and angular deflection of the beam passing through it can be changed. The beam expander can be used to 1) enlarge the beam before it is focused, so as to obtain a smaller focused spot; 2) improve the collimation characteristics of the beam.

In short, the beam expander is a lens assembly that can change the diameter and divergence angle of laser beam. Shenzhen Huapeng Aiwei supplies the laser beam expander imported from Germany. It is a kind of manual or electric zoom beam expander designed and developed based on Galileo principle. Its characteristics are high machining precision, good optical quality, high transmittance and less distortion. The application of this series of laser beam expanders is scientific Research, laser processing system.