Fibre optic device for homogenizing a laser beam
US6055346A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Jan 23, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0905
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device for homogenizing a laser beam includes a plurality of abutting front lenses (LF.sub.nm) for dividing the laser beam to be homogenized into m.times.n laser beams, each having a substantially uniform cross section, and a substantially homogeneous energy distribution; a first intermediate plane (PI1) located in the focal plane of the front lenses (LF.sub.mn) and having a plurality of entrance pupils (PE.sub.ij) each of which is arranged at the focus of a front lens (LF.sub.mn) selected among said plurality of front lenses (LF.sub.mn); a second intermediate plane (PI2) having a plurality of exit pupils (PS.sub.ij), a collection lens (LC) capable of collecting the beams from the plurality of exit pupils (PS.sub.ij); and optical transmission means for individually transmitting the light beams from the plurality of entrance pupils (PS.sub.ij) to the plurality of exit pupils (PS.sub.kj).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.