Polarization dependent out-coupling
US6711185B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Dec 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/143
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical arrangement for direction dependent coupling out of light comprises a first and a second polarization converter each for converting the state of polarization of light received in a predetermined way. A polarization dependent coupling device is adapted for coupling out a portion of the light received, whereby the ratio of the coupled out portion substantially depends on the state of polarization of the light received. The polarization dependent coupling device is arranged between the first and the second polarization converters, and the optical arrangement receives from different sides light beams propagating in different directions. The characteristics of the first and the second polarization converters are adapted such that the polarization dependent coupling device receives light beams propagating with different states of polarization in the different directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.