Glass article having a laser melted surface
AssigneeCorning Incorporated
InventorsJiangwei Feng, Stephan Lvovich Logunov, Robert Sabia
Life of this patent
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Abstract
A glass article having at least one edge of which at least a portion has been laser melted. The laser melted portion scatters light, thus enabling the glass article to be properly aligned. In some embodiments, the laser melted portion also provides a roughened edge having a coefficient of friction that facilitates handling of the glass article. The laser melted portion is formed by irradiating the peripheral surface with a laser beam to cause localized melting.
Claims44
A glass article, the glass article having a surface, the surface comprising a laser melted portion, wherein the laser melted portion has a RMS roughness that is capable of scattering light of a predetermined wavelength and a particle release of less than about 650 particles/cm2 area of the surface, wherein each of the particles released is greater than 2 μm in size.
A fused silica article, the fused silica glass article having a roughened peripheral surface that is capable of scattering light of a predetermined wavelength, wherein the roughened peripheral surface comprises a laser melted portion, wherein the roughened peripheral surface has a particle release of less than about 650 particles/cm2 area of the peripheral surface, wherein each of the particles released is greater than 2 μm in size.
A fused silica article, the fused silica article having a roughened peripheral surface that is capable of scattering light of a predetermined wavelength, wherein the roughened peripheral surface comprises a laser melted portion, wherein the roughened peripheral surface has a particle release of less than about 650 particles/cm2 area of the peripheral surface, wherein each of the particles released is greater than 2 μm in size, and wherein the roughened peripheral surface has a static coefficient of friction in a range from about 0.30 to about 0.60, as measured using a Teflon rod in dry conditions.
A method of making a glass article having a roughened peripheral surface, the method comprising the steps of:
- a. providing a laser, the laser having a predetermined wavelength;
- b. providing a glass article having a peripheral surface, wherein the glass article absorbs radiation at the predetermined wavelength;
- and
- c. irradiating at least a portion of the peripheral surface with the laser to form the roughened peripheral surface.
A fused silica article, the fused silica glass article having a roughened peripheral surface that is capable of scattering light of a predetermined wavelength, wherein the roughened peripheral surface is formed by:
- a. providing a laser, the laser having a predetermined wavelength;
- b. providing the fused silica article having a peripheral surface, wherein the fused silica article absorbs radiation at the predetermined wavelength;
- and
- c. irradiating the peripheral surface with the laser to form the roughened peripheral surface, wherein the roughened peripheral surface has a particle release of less than about 650 particles/cm2 area of the peripheral surface, wherein each of the particles released is greater than 2 μm in size.
Dependencies are inferred from the claim text.