| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a glass lens of desired thickness and shape easily using a glass mould method, without causing cloudiness and shape defects of the lens and degradation of dies, even with a glass having a comparatively high devitrifying tendency. SOLUTION: A manufacturing method of a glass lens includes a cooling process for a drop of molten glass 4 while being floated by a gas flow blown upward; and a press forming process of a cooled molten glass drop with the first die 11 and the second die 12 facing to the first die, after the drop is fallen on the first die 11.
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