Beam shaping device
US7379411B2 · kind B2 · utility
1Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Apr 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1398
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side surfaces of the beam shaping device both have a curvature only in the minor-axis direction of the cross section of the elliptic beam. Of the light-entrance-side and light-exit-side surfaces, one is a circular-arc cylindrical surface and the other is a non-circular-arc cylindrical surface. The beam shaping device fulfills prescribed conditions with respect to the center thickness, surface shapes, and/or other features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.