Global Patent Index - EP 1095296 A2

EP 1095296 A2 2001-05-02 - METHOD OF MAKING A PLASTIC OPTICAL FIBRE, AND A PLASTIC OPTICAL FIBRE

Title (en)

METHOD OF MAKING A PLASTIC OPTICAL FIBRE, AND A PLASTIC OPTICAL FIBRE

Title (de)

METHODE ZUR HERSTELLUNG EINER OPTISCHEN FASER AUS KUNSTOFF UND OPTISCHE FASERAUS KUNSTOFF

Title (fr)

PROCEDE DE PRODUCTION D'UNE FIBRE OPTIQUE PLASTIQUE, ET FIBRE OPTIQUE PLASTIQUE

Publication

EP 1095296 A2 (EN)

Application

EP 99952123 A

Priority

  • FI 9900425 W
  • FI 981114 A

Abstract (en)

[origin: WO9960426A2] The invention relates to a method of making a plastic optical fibre, in which method plastic materials with suitable optical properties are fed into an extrusion apparatus so as to form a multilayer structure where the refractive index decreases gradually in a controlled manner from the inside outwards. The invention also relates to a plastic optical fibre. In order to provide flexible and continuous manufacture and a wideband fibre, the extrusion apparatus consists of at least one multilayer conical extruder unit (1) which produces a product where the layers are formed without weld lines, are symmetrical and adhere well to each other. The number of the layers may also be high.

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

G02B 1/00

IPC 8 full level (invention and additional information)

G02B 6/028 (2006.01); B29C 47/02 (2006.01); B29C 47/04 (2006.01); B29C 47/12 (2006.01); B29D 11/00 (2006.01); G02B 6/00 (2006.01); B29C 47/00 (2006.01)

CPC (invention and additional information)

G02B 6/02038 (2013.01); B29C 47/0014 (2013.01); B29D 11/00663 (2013.01); B29C 47/00 (2013.01)

Citation (search report)

See references of WO 9960426A3

Designated contracting state (EPC)

AT CH DE ES FI FR GB IT LI NL SE

EPO simple patent family

WO 9960426 A2 19991125; WO 9960426 A3 20000113; AU 4267399 A 19991206; BR 9911052 A 20010206; EP 1095296 A2 20010502; FI 981114 A0 19980519; FI 981114 A 19991120; JP 2002516402 A 20020604

INPADOC legal status


2006-01-11 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20050706

2005-04-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050223

2001-05-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001124

2001-05-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT CH DE ES FI FR GB IT LI NL SE