JPS5372634A - Nozzle for production of optical fibers - Google Patents

Nozzle for production of optical fibers

Info

Publication number
JPS5372634A
JPS5372634A JP14779776A JP14779776A JPS5372634A JP S5372634 A JPS5372634 A JP S5372634A JP 14779776 A JP14779776 A JP 14779776A JP 14779776 A JP14779776 A JP 14779776A JP S5372634 A JPS5372634 A JP S5372634A
Authority
JP
Japan
Prior art keywords
nozzle
production
optical fibers
uniformalized
yen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14779776A
Other languages
Japanese (ja)
Other versions
JPS5945611B2 (en
Inventor
Katsuyuki Imoto
Michio Yanatori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14779776A priority Critical patent/JPS5945611B2/en
Publication of JPS5372634A publication Critical patent/JPS5372634A/en
Publication of JPS5945611B2 publication Critical patent/JPS5945611B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/029—Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/62—Heating means for drawing
    • C03B2205/63—Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles

Abstract

PURPOSE:To reduce the fluctuations in the diameter of an optical fiber to less than Yen 0.5pi by making a nozzle of porous sintered metal or metal mesh and by injecting the gases, which have their velocity distribution uniformalized in the circumferential direction, to the circumferential surface of molten preform.
JP14779776A 1976-12-10 1976-12-10 Nozzle for optical fiber manufacturing Expired JPS5945611B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14779776A JPS5945611B2 (en) 1976-12-10 1976-12-10 Nozzle for optical fiber manufacturing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14779776A JPS5945611B2 (en) 1976-12-10 1976-12-10 Nozzle for optical fiber manufacturing

Publications (2)

Publication Number Publication Date
JPS5372634A true JPS5372634A (en) 1978-06-28
JPS5945611B2 JPS5945611B2 (en) 1984-11-07

Family

ID=15438415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14779776A Expired JPS5945611B2 (en) 1976-12-10 1976-12-10 Nozzle for optical fiber manufacturing

Country Status (1)

Country Link
JP (1) JPS5945611B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003020654A1 (en) * 2001-09-05 2003-03-13 Corning Incorporated Furnaces for drawing an optical fibre from a preform
US7814767B2 (en) 1999-05-10 2010-10-19 Prysmian Cavi E Sistemi Energia S.R.L. Method and induction furnace for drawing large diameter preforms to optical fibres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7814767B2 (en) 1999-05-10 2010-10-19 Prysmian Cavi E Sistemi Energia S.R.L. Method and induction furnace for drawing large diameter preforms to optical fibres
WO2003020654A1 (en) * 2001-09-05 2003-03-13 Corning Incorporated Furnaces for drawing an optical fibre from a preform

Also Published As

Publication number Publication date
JPS5945611B2 (en) 1984-11-07

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