| CPC G02B 6/32 (2013.01) [G02B 6/3853 (2013.01); G02B 6/3874 (2013.01); G02B 6/3885 (2013.01); G02B 6/327 (2013.01); G02B 6/3845 (2013.01)] | 11 Claims |
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1. An optical fiber connection structure, comprising:
a tubular member;
a first collimator attached to a first end in an axial direction, which is a direction in which an axial line of the tubular member extends; and
a second collimator attached to a second end on a side opposite to the first end of the tubular member,
wherein the first collimator includes a first optical fiber, a first ferrule terminating the first optical fiber, a first lens facing the first ferrule through a gap, and a first sleeve internally holding the first lens and the first ferrule,
wherein the second collimator includes a second optical fiber, a second ferrule terminating the second optical fiber, a second lens facing the second ferrule through a gap, and a second sleeve internally holding the second lens and the second ferrule,
wherein an outer face of the first ferrule and an inner face of the first sleeve are fixed to each other via adhesive, an outer face of the first lens and the inner face of the first sleeve are fixed to each other via adhesive, an outer face of the second lens and an inner face of the tubular member are fixed to each other via adhesive, and an outer face of the second ferrule and an inner face of the second sleeve are fixed to each other via adhesive,
wherein the first sleeve is fixed to the first end in a state where the first lens faces the tubular member, and the second sleeve is fixed to the second end in a state where the second lens enters the tubular member, and
wherein an outer diameter of the second ferrule is larger than that of the second lens.
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