Verfahren zur kontinuierlichen Herstellung von Lichtleiterglasfasern aus einer Glasschmelze und Einrichtung zur Durchfuehrung dieses Verfahrens

摘要

An electric current is passed by means of electrode means through a body of molten glass which is maintained at a temperature above its softening point and is flowing in contact with the electrode means to be spun continuously into a glass filament, whereby a modifying oxide is caused to have its ions undergo ion-exchange with ions which can increase or decrease the refractive index of the glass through the ion-exchange and are provided by the electrode means or is caused to undergo electrolysis by the electric current. The ion-exchanger or electrolysis is so controlled that a distribution of refractive index in which the refractive index of the glass decreases continuously from the center line and toward the outer surface of the filament is established within the filament.