Method and apparatus for laser machining
US7157661B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/36
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser-machining method is provided in which a laser beam is generated with an energy intensity distribution that is a Gaussian distribution. The laser beam is shaped by applying a phase modulation based on a phase distribution expressed by a first order function having a negative gradient, then by applying a phase modulation based on a phase distribution expressed by an n-th order function having a positive gradient (n is a natural number no less than 2), and the laser beam, whose energy intensity distribution has been made substantially flat through the above processes, is led to irradiate a machined body, thereby machining the machined body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.