Title:
ガラスの製造方法、レンズの製造方法および溶融装置
Document Type and Number:
Japanese Patent JP6800627
Kind Code:
B2
Abstract:
A method for manufacturing glass, including the steps of heat-melting a raw material for producing glass by using a melting furnace having a plurality of gas flow paths while the raw material is levitated from the melting furnace by a gas ejected from the gas flow paths, and performing cooling so as to produce glass, wherein the melting furnace includes a recess portion, at least one first gas flow path configured to eject the gas in the vertical direction into the recess portion, a plurality of second gas flow paths configured to eject the gas in the direction toward the center axis of the melting furnace into the recess portion, the raw material is heat-melted while the raw material is levitated by the gas ejected from the first gas flow path and the gas ejected from the second gas flow paths, and the molten raw material is cooled.
Inventors:
Shingo Eguchi
Application Number:
JP2016122980A
Publication Date:
December 16, 2020
Filing Date:
June 21, 2016
Export Citation:
Assignee:
Canon Inc
International Classes:
C03B19/02; F27B14/04; F27B14/08
Domestic Patent References:
| JP2016023110A | ||||
| JP8012353A | ||||
| JP11116252A | ||||
| JP2002201032A |
Foreign References:
| US5762673 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa