Optical rotator and rotation-angle-variable half-waveplate rotator
US5473465A · kind A · utility
56Cited by
4References
9Claims
0Family size
Inventor
Key dates
| Filing date | Jun 24, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Jun 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The device of the present invention for an optical rotator and a half-waveplate rotator comprises a retarder or polarization modulator interposed between two crossed or parallel quarter-wave plates, depending on being used as optical rotator or half-waveplate rotator, oriented such that the fast or slow axis of the retarder or modulator is at angle of 45.degree. relative to fast or slow axes of the quarter-wave plates. The rotation angle of the optical rotator and half-waveplate rotator is equal to one-half the retardance of the retarder or modulator and electrically adjustable when using a polarization modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.