Patent · US Expired

Beam position control for a laser machine device

US4618759A · kind A · utility

55Cited by

4References

7Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Gerhard Muller · Grafing, DE
Gerhard Hohberg · Oberkochen, DE
Peter Greve · Eindhoven, NL

Key dates

Filing date	Feb 13, 1985
Grant date	Oct 21, 1986
Priority date	—
Expiry date	Feb 13, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0025
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention is directed to an arrangement for compensating for offset and angular errors of a laser coupled into a processing machine or measuring machine. The laser is mounted separately from the machine. The arrangement includes two adjustable mirrors by means of which the beam position at the coupling point is maintained constant. The corrective signal is generated by quadrant detectors cooperating with the adjustable mirrors arranged in the path of the laser beam. The detectors are arranged to receive rays of light diverted from the path of the laser beam. One of the detectors is preceded by a collimator causing the detector to respond only to angular errors.

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