Process for producing glass shaped material and process for...

Details Process for producing glass shaped material and process for... Process for producing glass shaped material and process for...

2011-08-09

2011-08-09

Crispino, Richard (Department: 1747)

Glass manufacturing

Processes

Severing of molten glass stream

C065S123000, C065S126000, C065S127000, C065S063000, C065S102000

Reexamination Certificate

active

07992412

ABSTRACT:
Disclosed are a process for producing a glass shaped material having high quality and high mass accuracy and a process for producing an optical element, which includes the preparation of a glass shaped material having high quality and high mass accuracy, the heating of said glass shaped material and the precision-press-molding thereof.The present invention provides a process for producing a glass shaped material including the separation of a predetermined amount of a molten glass gob from the forward end of a molten glass flow flowing down from a flow pipe, by a specific means and the shaping thereof into the glass shaped material, a process for producing a glass shaped material including the dropping of a molten glass drop from a flow pipe, the receipt thereof with a shaping mold that ejects a gas, by a specific means, and the shaping thereof into the glass shaped material while it is caused to float, and a process for producing an optical element including the precision press-molding of a preform obtained by one of these processes.

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patent: 2000-7360 (2000-01-01), None
patent: 2002-249337 (2002-09-01), None

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