Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuhisa Kashihara0
Minsuk Song0
Toshiaki Tateishi0
Date of Patent
April 22, 2008
Patent Application Number
11693230
Date Filed
March 29, 2007
Patent Primary Examiner
Patent abstract
A guide hole guides a primary-coated optical fiber to a tubular inlet hole. An inner diameter of the guide hole is larger than that of the tubular inlet hole. An inner diameter of the tubular inlet hole is in a range from 1.5 times to 2.0 times that of the primary-coated optical fiber. A length of the tubular inlet hole is in a range from 1.0 mm to 2.0 mm. A depth of the guide hole is in a range from 2.0 mm 9.0 mm. A relation B≦A is satisfied, with B equal to or larger than 7.0 mm, where A is an inner diameter of a leading edge of the guide hole continued to a trailing edge of the tubular inlet hole, and B is an inner diameter of a trailing edge of the guide hole.
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