Patent · US Expired

Laser-machining apparatus

US4634831A · kind A · utility

3Cited by

5References

4Claims

0Family size

Assignee

Rofin-Sinar Laser GmbH · DE

Inventors

Hinrich Martinen · Quickborn, DE
Samuel S. Simonsson · Winsen (Luhe), DE
Peter Wirth · Winsen, DE

Key dates

Filing date	Jan 30, 1984
Grant date	Jan 6, 1987
Priority date	—
Expiry date	Jan 30, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/081
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A laser apparatus is disclosed comprising a resonator for emitting a laser beam, an assembly for circularly or elliptically polarizing the laser beam emitted from the resonator, a lens assembly for focusing the laser beam from the polarizer to a workpiece with the laser beam from the polarizer to the lens having an axis, and the resonator having a folding mirror assembly for linearly polarizing the laser beam with the resonator being positioned relative to the polarizer so that the plane of reflection of the mirror assembly is approximately 45 degrees relative to the axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.