| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a glass molded body by which a glass molded body suitable as a preform for precise pressing having a narrow mass tolerance or as a base material for producing a preform is efficiently and stably mass-produced, to provide a method for producing the preform, and to provide a method for producing an optical element using the preform. SOLUTION: The method for producing a glass molded body is provided in which a process of dropping molten glass droplets on a liquid, and cooling and molding molten glass in the liquid is repeated to mass-produce a glass molded body, wherein the control of holding the temperature of the liquid to the prescribed one in the range of 0 to 200°C is performed, and thus, a solid glass molded body is mass-produced. The method for producing a preform for precise pressing is provided in which the glass molded body obtained by the above method is polished. The method for producing an optical element is also provided in which the glass molded body or preform obtained by the above method is heated, and is subjected to precise pressing. COPYRIGHT: (C)2009,JPO&INPIT
|
