| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle that has a baffle board arranged inside and that improves the yield of glass molding by preventing a molten glass flow from stagnating, and a method of manufacturing optical glass lump using the nozzle. ! SOLUTION: A nozzle is connected to a molten glass tank to allow molten glass to flow out, and includes a member arranged in the nozzle, and the member has a curved surface which is convex to outside the nozzle. Further, the nozzle may have an extension part which has its vertical cross section extended in a molten glass flowing-out direction at a flowing-out position of the molten glass. ! COPYRIGHT: (C)2015,JPO&INPIT |
