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How to deal with the distortion of CO2 F-Theta Scan lens
Posted on:
2021-07-12
The CO2 F-Theta Scan lens adopts a packaged CO2 laser, equipped with a German high-speed scanning galvanometer and a beam expander focusing system, with high marking accuracy and fast speed; the height of the CO2 F-Theta Scan lens can be adjusted up and down, easy to use, and can be replaced. Marking format lens; long continuous working time, clear and beautiful marking, powerful software function, serial number marking, flying marking; fixed laser marking design, simple operation, perfect upper and lower ventilation system, work environment-friendly; suitable for all Seed coat, leather, two-color board, plastic and various solid materials.
The carbon dioxide laser marking machine uses infrared light band, 10.64μm gas laser, CO2 gas is charged into the high-voltage discharge tube to generate glow discharge, so that the gas molecules release the laser, and the laser is amplified to form a laser beam for material processing. The laser beam vaporizes the surface of the processed body to achieve the purpose of engraving. So what if the CO2 F-Theta Scan lens prints distortion?
There are two correction methods. One is hardware correction, which is rarely used at present. The other is software calibration, which is the one we use more at present; the method of hardware calibration is to change the voltage value of the analog signal output by the D/A card through a calibration card according to a certain rule, and then transmit the signal For CO2 F-Theta Scan lens, pincushion or barrel distortion is an inherent phenomenon of galvanometer marking, which is determined by the scanning method of CO2 F-Theta Scan lens. The solution is to correct the distortion. The method of software correction is that the marking software itself has a correction function. In the marking process, the digital signal is processed according to a certain method, and then the signal is transmitted to the D/A card.
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