发明名称 |
Optical element and glass blank for producing the optical element |
摘要 |
Disclosed is a glass blank used in a producing process for molding an optical element by heating a glass material and press molding the glass material in a mold having optical functional surfaces. Employed is the glass blank having the glass surface coated with a reaction preventive layer and a hydrocarbon layer or with the hydrocarbon layer.
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申请公布号 |
US5168404(A) |
申请公布日期 |
1992.12.01 |
申请号 |
US19910727071 |
申请日期 |
1991.07.09 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
MIYAZAKI, SUNAO;KUWABARA, TETSUO;YOGO, NOBUKAZU |
分类号 |
C03B11/08;G02B1/10;G02B3/04 |
主分类号 |
C03B11/08 |
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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