Patent · US Active

Method and apparatus for detecting a condition of an optical element

US7705292B2 · kind B2 · utility

1Cited by

3References

26Claims

0Family size

Assignee

TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

Gerhard Hammann · Ditzingen, DE
Dieter Hallasch · Ditzingen, DE
Juergen Hohenadel · Schwieberdingen, DE

Key dates

Filing date	Jun 13, 2008
Grant date	Apr 27, 2010
Priority date	—
Expiry date	Jun 13, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/045
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A condition or detecting a change in the condition of an optical element of a laser arrangement is detected. An ultrasonic signal is coupled into an optical element such that the ultrasonic signal travels along a path within the optical element, and a transit time or a change in transit time for the ultrasonic signal to travel along the path within the optical element is detected.

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