Energy efficient laser arrangement
US12034275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2020 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Feb 14, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser arrangement includes a laser array including a plurality of Vertical Cavity Surface Emitting lasers and an optical structure including a diffuser arranged to change a distribution of the laser light. The optical structure is configured to transform the laser light to transformed laser light such that an overlap of the emission cones of at least a group of the plurality of lasers is increased in field-of-view in comparison to perfectly collimated laser light diffused to a flat-top intensity profile in the field-of-view. The optical structure is arranged to redirect the laser light emitted at angles of the emission cone to the field-of-view so as to increase the overlap of the emitted laser light in the field-of-view. The optical structure is also configured to provide a slope angle α of an intensity profile along a direction of the field-of-view that is smaller than a divergence angle of the laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.