Silica glass article and manufacturing process therefor
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United States of America Patent
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Mar 23, 2004
Grant Date -
May 23, 2002
app pub date -
Dec 3, 2001
filing date -
May 16, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process of manufacturing a silica glass article comprising the steps of: (1) irradiating a silica glass article with electromagnetic waves to generate defects therein; and (2) immersing the thus irradiated silica glass article in an atmosphere comprising a hydrogen gas, thereby providing the resulting silica glass article with a characteristic that is effective for preventing it substantially from increasing its absorption within an ultraviolet region due to ultraviolet ray irradiation. Also disclosed are a silica glass article or a glass fiber produced according to the manufacturing process.
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