EP 1095296 A2 20010502 - 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
Application
Priority
- FI 9900425 W 19990517
- FI 981114 A 19980519
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
IPC 8 full level
G02B 6/028 (2006.01); B29C 48/05 (2019.01); B29C 48/30 (2019.01); B29D 11/00 (2006.01); G02B 6/00 (2006.01); B29C 48/00 (2019.01)
CPC (source: EP KR)
B29C 48/00 (2019.02 - KR); B29C 48/05 (2019.02 - EP); B29D 11/00663 (2013.01 - EP KR); G02B 6/02038 (2013.01 - EP KR); G02B 6/02152 (2013.01 - KR); B29C 48/00 (2019.02 - EP)
Designated contracting state (EPC)
AT CH DE ES FI FR GB IT LI NL SE
DOCDB simple family (publication)
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; KR 20010043715 A 20010525
DOCDB simple family (application)
FI 9900425 W 19990517; AU 4267399 A 19990517; BR 9911052 A 19990517; EP 99952123 A 19990517; FI 981114 A 19980519; JP 2000549985 A 19990517; KR 20007012961 A 20001118