METHOD OF MANUFACTURING OPTICAL DEVICE BASE MATERIAL AND MANUFACTURING DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of an optical device base material capable of relatively inexpensively manufacturing a heavy weight optical device base material and an optical device base material manufacturing device using the same. SOLUTION: The optical device base material is obtained by using the manufacturing device provided with a holding vessel 2 for holding a molten glass 1, >=2 pieces of nozzles 3 communicating with the holding vessel 2 and a fusing unit 7 arranged below the nozzles 3, dropping the liquid drops 5 of the molten glass from the nozzles 3 to the fusing unit 7, fusing the liquid drops 5 of the dropped molten glass to each other in the fusing unit 7 to form fused liquid drops 6 and cooling the fused liquid drops 6.