Patent attributes
An apparatus for manufacturing an optical fiber including: a drawing portion; a coating portion; and a curing portion, wherein: a direction changer which changes a direction of the bare optical fiber is disposed in any position from the drawing portion to the coating portion; the direction changer includes a guide groove which guides the bare optical fiber; a blowout port of a fluid which floats the bare optical fiber wired along the guide groove is formed along the guide groove in the guide groove; and in the blowout port, the Reynolds number in an inlet wire portion of the bare optical fiber to the guide groove and an outlet wire portion from the guide groove is greater than the Reynolds number in an intermediate portion between the inlet wire portion and the outlet wire portion.
