Method and apparatus for molding optical glass elements or the like
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 13, 1994
Grant Date -
N/A
app pub date -
Jul 2, 1993
filing date -
Jul 3, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus are disclosed which place a glass blank on a lower mold arranged in an opposed relation to an upper mold, heat these molds and glass blank by an infrared lamp unit or high-frequency coil arranged around the molds and press-mold an optical glass element. In the method and apparatus, the infrared lamp unit or high-frequency coil is supported by a supporting mechanism such that it is movable along a direction in which the mold is moved. In cases where a relative position of the infrared lamp unit or high-frequency coil to the mold varies depending upon the shape and size of such molds or the shape and size of optical glass elements obtained, the infrared lamp or high-frequency coil is adjustably moved relative to the mold by a movable mechanism using a motor or air cylinder as an operation source. By using temperature sensors attached to both the molds, the temperatures of the upper and lower molds are controlled to a corresponding desired level.
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