The Furukawa Electric Co., Ltd.

Seiichi Imamizo

Takashi Shigematsu

Koichi Takagi

Jun Yamakawa

Toshihiko Ohta

Takahide Kimura

A method of molding a ferrule of plastic resin provided with at least one hole having a small diameter and positioned at a predetermined position by a mold having a pair of associated molding ferrule halves, including the steps of arranging a molding core having at least one pin for defining the hole in a cavity defined by the pair of molding ferrule halves, holding the molding ferrule halves by a clamping force, the molding ferrule halves having inner members for positioning the pin and being free from the clamping force, supplying plastic resin into said cavity and pressing the inner members of the molding ferrule halves by a force separate from the mold clamping force.

Method of forming ferrule for an optical fiber connector and a mold

Disclosed in an optical switching connector provided with a first and second ferrule disposed with end faces thereof abutting on each other and two reference pins disposed in parallel at a predetermined interval. The first and second ferrules have two parallel pin holes, respectively. The two reference pins are inserted in the pin holes. The pin holes have an elongated sectional shape enabling the reference pins to move laterally by exactly a certain movement pitch. The first and second ferrules are able to be positioned at one position determined by one of the inside surfaces of the pin holes being pressed against the reference pins and another position determined by the other inside surfaces of the pin holes being pressed against the reference pins. One of the first and second ferrules has fixed in it two or more optical fibers at a pitch of 1/n (n being a positive integer) of the above-mentioned certain movement pitch, while the other ferrule has fixed in it one or more optical fibers so to correspond with all or part of the same.

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Ichihara, Japan

Seiichi Imamizo