Original document(64 pages)  中文版
    A preform (15) is hung from an arm (72) into a heating furnace (74). The heating furnace (74) has five heater units (90-94). A gas supply device (77) supplies nitrogen gas to the heating furnace (74). The heating furnace (74) is divided into five sections by orifices (95-100), and the temperature of each divided section is controlled by the heater units (90-94) provided in each section. A seal member (106) attached to the top side of the heating furnace (74) shields the heating furnace (74) from external air, so it is possible to prevent turbulence in the divided sections in the heating furnace (74).
Application Number
申请号		 200580010566 Application Date
申请日		 2005.03.29
Title 名称 Manufacturing method and device for plastic optical fiber
Publication Number
公开号		 1938617 Publication Date
公开日		 2007.03.28
Approval Pub. Date Granted Pub. Date
International Classification 分类号 G02B6/00
Applicant(s) Name
申请人		 Fujifilm Holdings Corp.
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 yuhui
More information 更  多  信  息


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