Lenslet array for beam homogenization
US7206132B2 · kind B2 · utility
7Cited by
19References
60Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Aug 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for homogenizing a laser beam includes a lenslet array. In some embodiments, the lenslets have a negative power. The lenslet array may include from 16 to 36 effective lenslets in some embodiments, or any other suitable number in alternative embodiments. Some embodiments additionally include a re-focusing lens for directing the beamlets onto a target so that the beamlets overlap and the energy distribution is homogenized. In an alternative embodiment, the lenslet array and re-focusing lens are combined in one optic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.