Method of producing optical glass element and production apparat

Details Method of producing optical glass element and production apparat Method of producing optical glass element and production apparat

1990-07-06

1992-02-11

Lindsay, Robert L.

Glass manufacturing

Processes

Sequentially forming, reheating, and working

65 321, 65 77, C03B 1100

Patent

active

050872796

ABSTRACT:
A method and apparatus are provided for producing an optical glass element, including displacing a gob of optical glass on a first heat working jig to a second heat working jig by making the gob of optical glass adhere to the second heat working jig due to a difference in wettability with high temperature glass between the first heat working jig and the second heat working jig. The gob of optical glass on the second heat working jig is thermally deformed to form an optical glass preform. The optical glass preform is formed under heat and pressure by using pressure molds to form an optical glass element.

REFERENCES:
patent: 3278285 (1966-10-01), Pickering
patent: 3900328 (1975-08-01), Parsons et al.
patent: 4139677 (1979-02-01), Blair et al.
patent: 4168961 (1979-09-01), Blair
patent: 4915720 (1990-04-01), Hirota et al.

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