Assessment of laser marking contrast with profilometer

[摘要] Annotation. A simple and affordable method for estimating the contrast of laser marking with QR-code using a profilometer is proposed. The method is based on the existence of a direct relationship between the contrast and the roughness of the code - the contrast increases with an increase in the surface roughness. The use of a profilometer makes it possible to determine the features of a complex relief that negatively affect the contrast of the code.

[发布机构] St. Petersburg Mining University, 21st Line of Vasilyevsky Island, St Petersburg; 199106, Russia^1

[效力级别] 电工学

[关键词] Laser marking;Profilometers;QR codes