Patent · US Expired

Method and apparatus for controlling laser energy

US6834062B2 · kind B2 · utility

0Cited by

11References

12Claims

0Family size

Assignee

RAYLASE GmbH · DE

Inventors

Stephen Hastings · Munich, DE
Peter Dullin · Krailling, DE
Alistair Gill · Houston, US
Erwin Wagner · Kenilworth, US
Peter Von Jan · Krailling, DE
Wolfgang Hauck · Gochsheim, DE

Key dates

Filing date	Jul 22, 2002
Grant date	Dec 21, 2004
Priority date	—
Expiry date	Oct 4, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/382
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The present invention provides a method and apparatus for controlling laser power, using at least two Brewster windows which are aligned along an axis which is parallel to the direction of the laser beam and which are rotatable around said axis, wherein the first Brewster window is rotated in one direction and the second Brewster window is rotated in the opposite direction. Preferably, both Brewster windows only have to rotate each through +/−45° to control transmission of the laser beam from maximum to minimum.

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