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US 7,802,925 B2Granted
Optical receptacle and optical receptacle module
AssigneeNEC Electronics Corporation
InventorsJunichi Shimizu, Akihiro Ito
Life of this patent
Estimating the term…
Abstract
An SC-type optical receptacle includes a first and a second holder each having a hollow chamber longitudinally penetrating therethrough, and a hollow cylindrical sleeve fitted in the chamber of the holders to thereby retain the frontal facets of a pair of ferrules so as to keep the frontal facets butted to each other. The wall thickness of the sleeve is constant over the entire length thereof, and is not less than 0.55 mm.
Claims12
An optical receptacle of an SC type, comprising:
- a stub ferrule having a through hole in which an optical fiber is provided, wherein said optical receptacle optically couples a frontal facet of said stub ferrule and a frontal facet of a plug ferrule of an optical connector;
- a holder including a hollow chamber longitudinally penetrating therethrough;
- and
- a hollow cylindrical sleeve fitted in said chamber of said holder to thereby retain said frontal facets of said plug ferrule and said stub ferrule so as to keep said frontal facets butted to each other;
- said stub ferrule fitted in said sleeve;
- wherein a wall thickness of said sleeve is constant over an entire length thereof, and is equal to or more than 0.55 mm.
3 more elements
An optical receptacle of an LC-type comprising:
- a stub ferrule enclosing therein an optical fiber, wherein said optical receptacle optically couples a frontal facet of said stub ferrule and a frontal facet of a plug ferrule of an optical connector;
- a holder including a hollow chamber longitudinally penetrating therethrough;
- and
- a hollow cylindrical sleeve fitted in said chamber of said holder to thereby retain said frontal facets of said plug ferrule and said stub ferrule so as to keep said frontal facets butted to each other;
- wherein:
- a wall thickness of said sleeve is constant over an entire length thereof, and is equal to or more than 0.25 mm;
- said stub ferrule fitted in said sleeve;
- a length of said sleeve is a sum of a first portion and a second portion, wherein a length of said first portion is a length of said stub ferrule within said sleeve;
- and
- a ratio of the length of said first portion to a length of said second portion is 1:1.5.
7 more elements
Dependencies are inferred from the claim text.