Laser machining apparatus and method
US5498851A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1993 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Aug 24, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pulse laser beam of energy distribution having a plurality of peaks is generated (e.g. having a TEM.sub.01 mode or greater) and is directed onto an optical system. The system combines beam-condensing optical elements and multi-beam-splitting prism elements so that the peaks of energy distribution in the laser beam mode fall correspondingly on the cut surfaces of each of the multi-beam-splitting prism elements. Each of the condensing and splitting elements may either be of transmission or reflection type, and further they may be of separate or integral type. Fresnel lenses or meniscus lenses may be used as beam-condensing optical elements. As a result, a plurality of pulse laser beam-condensed spots are produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.