Use of galvanometer systems leads to discrepancies such as the differential cross-sectional area of the beam, non-normal incidence, increased scan speeds, and more. The use of F-theta lenses and offset-mapping software can only mitigate these problems to a certain extent.
Tecnicas’ technology eliminates the errors encountered with the use of the galvanometer system. Tecnica3D uses two mirrors where one mirror is stationary and the other constantly rotating to direct the incoming laser beam onto the print bed. Since there is no oscillating mechanism, the incident beam is always in-focus and normal to print the surface. With Tecnica3D, the laser beam does not suffer from any lens aberrations or loss of energy density as the system is lens-free.decrease of output energy. The combination of these non-linear errors increases in magnitude as the beam moves farther from the center and closer to the print edge. 3D printers using galvanometers must use f-theta lenses to maintain a constant speed between laser dots. While this method mitigates some of the print distortions, it does not resolve the other issues described above. Besides, the work area build size is limited by the physical size constraints of the lenses. To address the inherent problems with galvanometers and associated lens systems, Tecnica developed a revolutionary, patented technology that eliminates traditional scanning errors. This video shows how a Galvanometer functioned in existing systems v. apprises Tecnica’s technology.