Fiber optic loop signal coupler apparatus
US4277134A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1978 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | Jan 19, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3604
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fiber optic rotary coupler apparatus is disclosed in which a light signal formed in a continuous ring in a plane is transmitted between a barrel and a surrounding sleeve within which the barrel is rotatably mounted. The light signal ring is produced by a light source and an associated light transmitting fiber wound on the barrel in at least one complete circular loop of a radius such that a portion of a light signal introduced into an end thereof is transversely radiated from the fiber. Light detector means, which may include a further optical fiber for transmitting light signals to a remote detector, is carried on the sleeve. In one embodiment, a plurality of optical and electrical signal channels are incorporated into a single device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.