Method of making multi-ferrules having a series of channels with parallel axes
US5183489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3863
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a method of making multi-ferrules. It provides a method of making multi-ferrules from a vitreous material, the multi-ferrules having a series of cylindrical channels with parallel axes. The method is characterized in that it comprises the following steps: PA0 forming a blank (1) of well-defined section from a vitreous material, in which cylindrical passages (2) having parallel axes and an inside diameter Di have been machined, the dimensions of the outside section of the blank and the diameter Di being defined with relative accuracies at least equal to the accuracies required respectively for the dimensions of the outside section of the multi-ferrule (11) to be made and the inside diameter of the channels (9) of said multi-ferrule, PA0 positioning this blank (1) vertically in an apparatus of the same type as a fiber drawing apparatus for optical fibers, PA0 exerting traction on the piece (6) being formed at the bottom end of said blank (1) in such a manner as to obtain the required outside dimensions, PA0 controlling the dimensions of the outside section of the piece (6) being formed, and PA0 forming a multi-ferrule (11) of selected length by cutting a give…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.