发明名称 |
Method molding a glass composition into an optical element with reduced pull-out |
摘要 |
A mold has a moling surface of a material containing silicon carbide and/or silicon nitride as a main component and a carbon thin film formed on the molding surface to prevent fusion sticking. A glass substance which has a sag point not higher than 565° C. and a predetermined composition free from arsenic oxide is introduced into the mold. The glass substance is press-formed in a heated and softened condition into a glass optical element of high precision.
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申请公布号 |
US6588231(B1) |
申请公布日期 |
2003.07.08 |
申请号 |
US19990437947 |
申请日期 |
1999.11.12 |
申请人 |
HOYA CORPORATION |
发明人 |
HIROTA SHIN-ICHIRO;OOGAMI YU;HASHIMOTO KAZUAKI |
分类号 |
G02B1/00;C03B11/00;C03B11/08;C03B40/00;C03B40/02;C03C3/068;C03C3/091;C03C3/095;(IPC1-7):C03B40/04 |
主分类号 |
G02B1/00 |
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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