发明名称 |
Glass substrate and two-stage molding method therefor |
摘要 |
There is provided a glass substrate having a V-groove portion for arranging an optical fiber core and a countersunk portion for containing an optical fiber coated portion, formed on the extension of the V-groove portion, on the surface thereof. The surface roughness of an inside side face of the countersunk portion is 1 mum or less in Rmax, or 0.2 mum or less in Ra at least at the connecting portion of the V-groove portion and the countersunk portion. The glass substrate is manufactured by a two-stage molding method in which a first molding step for forming a concave portion in the surface of a glass substrate molded body by grinding or pressing, and a second molding step for pressing the glass substrate molded body obtained by the first molding step from the top and bottom surfaces while reheating the molded body are performed.
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申请公布号 |
US6321020(B1) |
申请公布日期 |
2001.11.20 |
申请号 |
US19990277491 |
申请日期 |
1999.03.26 |
申请人 |
NGK INSULATORS, LTD.;NGK OPTOCERAMICS, LTD. |
发明人 |
FUKUYAMA MASASHI;TOHYAMA KAZUTOSHI |
分类号 |
C03B23/03;G02B6/36;G02B6/38;(IPC1-7):G02B6/36 |
主分类号 |
C03B23/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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