Global patent index - EP 1084085 A1

EP 1084085 A1 2001-03-21 - METHOD AND DEVICE FOR DRAWING AN OPTICAL FIBRE FROM A PREFORM

Title (en)

METHOD AND DEVICE FOR DRAWING AN OPTICAL FIBRE FROM A PREFORM

Title (de)

VORRICHTUNG UND VERFAHREN ZUM ZIEHEN EINER OPTISCHEN FASER AUS EINER VORFORM

Title (fr)

PROCEDE ET DISPOSITIF POUR ETIRER UNE FIBRE OPTIQUE A PARTIR D'UNE EBAUCHE

Publication

EP 1084085 A1 (DE)

Application

EP 99929206 A

Priority

  • DE 19826465 A
  • DE 19904251 A
  • EP 9904097 W

Abstract (en)

[origin: WO9965834A1] The present invention relates to a furnace for producing an optical fibre (2) from a preform (1), wherein said furnace comprises an inner space (4) with a geometrical axis along which the preform (1) is capable of displacement. The inner space includes a region (10) which extends along said axis and in which the melting temperature of the preform (1) material can be adjusted, wherein said temperature decreases at the axial ends of the inner space (4). This invention is characterised in that the generation of heat in the furnace and/or the emission of heat outside the inner space (4) varies along the axis. This invention further relates to a method for producing optical fibres.

IPC 1-7 (main, further and additional classification)

C03B 37/029

IPC 8 full level (invention and additional information)

C03B 37/029 (2006.01)

CPC (invention and additional information)

C03B 37/029 (2013.01); C03B 2205/63 (2013.01); C03B 2205/64 (2013.01); C03B 2205/70 (2013.01); C03B 2205/72 (2013.01)

Citation (search report)

See references of WO 9965834A1

Designated contracting state (EPC)

FR GB IT NL

EPO simple patent family

WO 9965834 A1 19991223; CN 1274337 A 20001122; EP 1084085 A1 20010321

INPADOC legal status

2004-08-18 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040103

2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000915

2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): FR GB IT NL