APPARATUS WITH MULTIFOCAL LENS FOR CUTTING GLASS PLATES, CAPABLE OF FORMING FLAT AND UNIFORM CUTTING PLANES

摘要

PURPOSE: An apparatus for cutting glass plates is provided, which has a multifocal lens to maximize the quality of cutting planes when cutting the glass plates by using a laser beam. CONSTITUTION: The apparatus for cutting glass plates comprises: a cracking means to finely crack the starting point in cutting the glass plate; a scribing means by the laser beam absorbed in at least one glass material; a cooling means by a cooling fluid after irradiating at least one laser beam; a breaking means by the laser beam, which comprises a laser oscillator, a reflection mirror, and a condenser lens. The condenser lens has at least two focus distances, wherein the focus distance of the center of the condenser lens is far from the lens than the focus distance of the outside of the lens.