Severing of glass or vitrocrystalline bodies
AssigneeGlaverbel-Mecaniver
InventorsEmmanuel Lambert, Jean-Louis Lambert, Bernard De Longueville
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Abstract
In the severing of bodies of glass or vitrocrystalline materials by the application of a laser beam, the severing operation is improved by employing a beam of which at least the predominent wavelength is such that at least 10% of the beam energy penetrates the body to a depth of at least 0.2 mm.
Claims9
In a method for severing a body of soda-lime glass having a thickness of at least 5 mm by irradiating the body with at least one laser beam producing energy which is absorbed by the body to induce breaking stresses therein, the improvement comprising irradiating the body with at least two laser beams of respectively different wavelengths with respect to which the body has respectively different degrees of transparency and giving at least one of the laser beams at least a predominant wavelength such that at least 10 percent of the energy of such laser beam penetrates the body to a depth of at least 0.2 mm.
Dependencies are inferred from the claim text.