| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a glass material having superior homogeneity by a containerless floating method.SOLUTION: A process of obtaining a glass material by cooling molten glass is carried out after the molten glass is obtained by heating and melting a glass raw material ingot 12 by irradiation with laser light in a state in which the glass raw material ingot 12 is floated and held over a molding surface 10a of a molding tool 10 by jetting a gass from a gas jet hole 10b opened in the molding surface 10a. While the attitude of the glass raw material ingot 12 is changed relatively to the laser light, the glass raw material ingot 12 is irradiated with the laser light. |
