U.S. Philips Corporation

Marius A Klop

Hermanus N Tuin

Jan G Peelen

Wilhelmus C Meerman

Johannes Feenstra

Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel. For applying a coating to the fiber, the fiber is passed through a nozzle which has a polygonal nozzle opening.

Coating apparatus for manufacturing optical fibers

Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel. During drawing of the fiber, the preform and fiber are flushed with a gas. According to the invention the gas with which the fiber is flushed is passed along a condensation element.

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Eindhoven, Netherlands

Marius A Klop