Polarization-maintaining optical rotary coupling
US7734130B2 · kind B2 · utility
4Cited by
29References
20Claims
0Family size
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Key dates
| Filing date | Nov 27, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical rotating data transmission device for polarization-maintaining transmission of linearly polarized light comprises at least one first collimator for coupling on first light-waveguides, and also a second collimator for coupling on second light-waveguides, the second collimator being supported to be rotatable relative to the first collimator about a rotation axis. At least two λ/4 plates for converting linear polarization to circular polarization and vice-versa are provided in an optical path between the first collimator and the second collimator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.