Multi-stage Lyot filter and method
US8427769B1 · kind B1 · utility
3Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Dec 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to an embodiment of the disclosure, a multi-stage Lyot filter comprises a plurality of prisms, a polarizing block, and a non-rotating, single-adjustment birefringent element. Each of the prisms is configured to receive light and to reflect the light. The polarizing block is configured to provide polarization discrimination of the light. The birefringent element is configured to tune the Lyot filter. The prisms are further configured to pass the light through the birefringent element multiple times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.