Device and method for laser processing large-area substrates using at least two bridges

摘要

Laser device (1) for hardening of coatings containing metal or containing metal oxides on glass substrates (7) large area, comprising at least: a) at least one laser source (2), b) at least two bridges (4) covering a conveyor belt (5) with the glass substrate (7), wherein - each bridge (4) contains several optical arrangements (3) arranged alternately on the bridges (4), characterized that: - each optical arrangement (3) generates a laser line (12), and - the laser lines (12) of all optical arrangements (3) together cover the entire width of the substrate (7), wherein the laser lines (12) of adjacent optical arrangements (3) together cover an area with a width of 500 microns to 1 cm.