Process for manufacturing glass optical elements

Details Process for manufacturing glass optical elements Process for manufacturing glass optical elements

1997-06-24

1999-02-23

Silverman, Stanley S.

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65102, 65120, 65122, 65124, 651822, 6537415, C03B 4004

Patent

active

058739211

ABSTRACT:
Processes for manufacturing glass optical elements by press molding a heated and softened glass material in preheated molds. In the process, the glass material is heated while it is floated by a gas blow and the heated and softened glass material is transferred to the preheated molds and then subjected to press molding. Alternatively, the process comprises: heating a glass material at a temperature at which the glass material has a viscosity of lower than 10.sup.9 poises, preheating molds at a temperature at which the glass material has a viscosity of from 10.sup.9 to 10.sup.12 poises, subjecting the heated and softened glass material to initial press in the preheated molds for 3 to 60 seconds, starting to cool the vicinity of molding surfaces of the molds at a rate of 20.degree. C./minute or higher upon starting of, or during, or after the initial press, and removing a molded glass article from the molds after the temperature of the vicinity of the molding surfaces of the molds becomes a temperature equal to or lower than a temperature at which the glass material has a viscosity of 10.sup.12 poises.

REFERENCES:
patent: 1638593 (1927-08-01), Mulholland
patent: 1663925 (1928-03-01), Steimer
patent: 2805898 (1957-09-01), Willis, Jr.
patent: 2911669 (1959-11-01), Beckwith
patent: 3264720 (1966-08-01), Mott
patent: 4629489 (1986-12-01), Hirota et al.
patent: 4778505 (1988-10-01), Hirota et al.
patent: 5171347 (1992-12-01), Monji et al.
patent: 5228894 (1993-07-01), Sato et al.
patent: 5250099 (1993-10-01), Kubo et al.
patent: 5284501 (1994-02-01), Monji et al.
patent: 5344476 (1994-09-01), Tomida
patent: 5346522 (1994-09-01), Komiyama et al.

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