Optical beam power controller using a tiltable birefringent plate
US6249379A · kind A · utility
1Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/281
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is an inexpensive optical beam power controller for providing fast, continuous control of a linearly polarized optical beam, such as a beam from a laser. In essence, the controller comprises a birefringent plate tiltable in relation to the beam and a polarization analyzer. Alternative double pass embodiments reduce beam displacement and the required tilt angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.