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The role of laser field lens of laser marking machine

Scanning field lens is a professional lens system. Its purpose is to form a uniformly sized focused spot of the laser beam in the entire marking plane to solve the problem of off-axis deflection after the laser beam passes through the focusing lens system in the marking system. Is one of the most important parts of laser marking machine.

China Manufacturer Post Objective Scanning on Sale

The main function of the laser field lens:
1. Improve the ability of the edge beam to enter the detector;
2. Make the non-uniform illumination on the photosensitive surface of the detector uniform;
3. In the same main optical system, the additional laser field lens will reduce the area of ​​the detector; if the same area of ​​the detector is used, the field of view can be enlarged and the incident flux can be increased;

Field lens can be divided into f-theta lens and telecentric lens(532nm Telecentric Lenses on Sale China)

F-theta lenses are mainly used in laser marking machines for industrial applications. Without distortion, the position of the focus point depends on the focal length of the lens and the tangent of the deflection angle, and the position of the focus point only depends on the focal length and the deflection angle hich simplifies the calculation method of focus positioning.

Laser marking optical components mainly include beam expander and F-THETA scan lens.The role of the beam expander is to enlarge the beam diameter and reduce the beam divergence angle. F-Theta scan lens achieves uniform focusing of the laser beam.(Wholesales F-Theta Lens for 1064nm)

Carmanhaas Laser marking can be applied to the marking of all non-transparent materials. General optical system: Expanding the beam through the beam expander to improve the divergence angle, after the beam combines the indicator light into the galvanometer system for beam deflection and scanning,finally, the workpiece is scanned and focused by the F-THETA scan lens.