发明名称 |
Method of manufacturing a glass optical part |
摘要 |
A method of pressing flowing-down molten glass from the opposite sides thereof by a pair of shaping mold members to thereby manufacture a glass optical part having surfaces corresponding to the shaping surfaces of the mold members is characterized in that a groove forming ring is provided around the shaping surface of at least one of the shaping mold members, a groove is formed in the molten glass by the groove forming ring during the press and the flowing-down molten glass is cut above that portion thereof which is being pressed, thereby obtaining a glass molded article having an ear protruding outwardly of the groove relative to an optical part body portion.
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申请公布号 |
US5275637(A) |
申请公布日期 |
1994.01.04 |
申请号 |
US19910645633 |
申请日期 |
1991.01.25 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SATO, BUNRYO;YOGO, NOBUKAZU;TANAKA, HIROE;NOMURA, TAKESHI;KUBO, HIROYUKI |
分类号 |
C03B7/12;C03B11/08;(IPC1-7):C03B11/05;B29D11/00 |
主分类号 |
C03B7/12 |
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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