Fiber optic rotary joint
US6907161B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3604
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention eliminates the lens/prism assemblies and the multiple pick-up fibers that must be multiply lensed to a detector to get sufficient signal strength for the system to work. This invention also compensates for some of the rapid rise and fall time of the present system. A single pick-up, either a fiber or a photodiode, is placed at the end of a waveguide. A lens or lens system is used to focus a single optical signal on to the fiber face or the photodiode active area. Various light injection techniques, such as fibers, fiber/lens assemblies, lensed VCEL, lasers, or LEDs can be utilized because of the location in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.