Method of producing optical glass element and production apparatus using this method
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United States of America Patent
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Feb 11, 1992
Grant Date -
N/A
app pub date -
Jul 6, 1990
filing date -
Jul 14, 1989
priority date (Note) -
Expired
status (Latency Note)
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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.
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