Rotary joint for optical fibers
US4641915A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1984 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Nov 16, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3886
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rotary joint for optical fibers consists of two rotary members which enable efficient transmission of optical signals without the need of converting the same into electric signals by attaching rod lenses having a refractive index in the second order distribution relative to its center axis, to respective tips of the optical fibers capable of relative rotation so that an optical signal emitted from the tip of one optical fiber is transmitted from the end of one rod lens in the form of parallel rays to the other rod lens, and as a converged beam to the tip of the other optical fiber. The joint further includes a mechanism for imparting pressure to the rotary members, and a mechanism for finely setting the angle between the two rod lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.