Press forming machine for optical devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 30, 2004
Grant Date -
Dec 27, 2001
app pub date -
May 21, 2001
filing date -
Jun 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An object of the present invention is to provide a press forming machine for glass optical devices which is superior in the temperature uniformity and has a low manufacturing cost. An upper die is fixed to a lower end of a fixed shaft, and a lower die is fixed to an upper end of a moving shaft. The upper die and the lower die are accommodated in a quartz tube, and a forming chamber in which atmosphere adjustment is possible is formed inside the quartz tube. An infrared lamp unit is arranged so as to surround the quartz tube. The infrared lamp unit is constituted by a plurality of straight tube type infrared lamps each of which has a vertical axis, and a reflecting mirror is arranged behind each infrared lamp. In this example, straight tube type infrared lamps are used in the infrared lamp unit.
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