Optical fibre ferrule assembly

摘要

An Optical Fibre Ferrule Assembly 1 which comprising an inner tube member 8, optical ferrule 6 and outer tube member 3. The inner tube member 8 has generally cylindrical form with either a singular or plurality of key features 9 at one end and at the other end a counter bore for the location and captivation of the optical ferrule member 6. The key feature 9 provides a datum plane for location and orientation when processing the inner tube sub assembly 2 to ensure end face angle 7 on the optical ferrule member 6 is correctly orientated. The inner tube sub assembly 2 is of precise length such that when mounted into the outer tube member 3 the rear shoulder 10 of the inner tube member 8 abuts the internal shoulder 13 of the outer tube member 3. The location of the rear shoulder 10 with the internal shoulder 13 ensures the precise dimensional and functional relationship is maintained between the external datum plane 17 on the outer tube assembly and the optical end face datum 7 on the optical ferrule member 6. The inner tube sub assembly 2 is of sufficient size, dimension and form small enough to enable it to pass freely though the micro duct member 5 when the micro duct member is both straight and formed up to its minimum bend radius. The outer tube member 3 has generally cylindrical form with a minimum of four alignment and orientation features of either a singular or plurality form.
A singular or plurality of internal key features 12 which pass though the full length of the outer tube member 3 to enable precise alignment and orientation to the key feature 9 on the inner tube member 8.
A singular or plurality of external key datum features 15 which permit precise orientation and alignment when the Optical Fibre Ferrule Assembly is connected in use.
An internal shoulder 13 against which the rear shoulder 10 of the inner tube member 8 abuts to ensure precise dimensional and functional relationship is maintained between the external datum feature 17 of the outer tube member 3 and the optical end face 7 on the ferrule member is maintained.