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US 7,023,538 B2Granted
Monitoring an optical element of a processing head of a thermal machine tool
AssigneeTrumpf Laser GmbH
InventorsJochen Hutt, Rainer Flaig
Life of this patent
Estimating the term…
Abstract
An apparatus for monitoring an optical element of a processing head of a machine for thermal processing of a workpiece includes a light source for coupling a light beam into an optical surface of an optical element and a detector for detecting a portion of the light beam scattered in the region of the optical surface facing the workpiece.
Claims8
An apparatus for monitoring an optical element of a processing head of a machine for thermal processing of a workpiece comprising:
- a first light source configured for coupling a first light beam into a first optical surface of an optical element and through the optical element, such that the first light beam is scattered from material deposited on a second optical surface of the optical element facing the workpiece;
- and
- a first detector configured and positioned for detecting a first portion of the first light beam scattered from material deposited on the second optical surface facing the workpiece.
Dependencies are inferred from the claim text.