Laser system and method forming an edge section of a high purity fused silica glass sheet
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United States of America
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Oct 8, 2019
Grant Date -
Aug 2, 2018
app pub date -
Aug 16, 2017
filing date -
Aug 16, 2017
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Abstract
A system and method for making an edge section of a thin, high purity fused silica glass sheet. The method includes a step of directing a laser to melt through the glass sheet with localized heating of a narrow portion of the glass sheet to form an edge section of the glass sheet, and continuing the edge section to form a closed loop defining a perimeter of the glass sheet. The method further includes rapidly cooling the glass sheet through the glass transition temperature as the melted glass of the edge section contracts and/or solidifies to form an unrefined-bullnose shape extending between first and second major surfaces of the glass sheet.
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