Beam shaping device for focusing light beams from semiconductor laser
US8767304B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Mar 25, 2010 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4012
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam shaping device, consists of a polarization beam splitter interface (PBS interface), four light surfaces and at least one light processing surface, as well as various entities are described. The PBS interface passes light in P polarization and reflects light in S polarization; two of the four light surfaces are light I/O surfaces, and the other two of them are light surfaces for processing (LSFP); the light processing surface is arranged and oriented to retro-reflect, or close to retro-reflect light beam coming from said PBS interface and back it to where it comes from, and, in the meantime, physically rotate the reflected light beam around its propagating direction by 90°, or close to 90°. The invention works for light beam in any polarization status including non-polarized beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.