1. Method for measuring the distance between a workpiece and a machining head of a laser machining apparatus

    Method for measuring the distance between a workpiece and a machining head of a laser machining apparatus

    According to a method for measuring the distance between a workpiece and a machining head of a laser machining apparatus, a machining head is provided, which has a housing that has an interior and an opening for emergence of the laser radiation from the machining head. The laser radiation is directed on to the workpiece, after it has passed through the interior and the opening. An object beam is directed on to the workpiece by a light source of an optical coherence tomograph in such a manner that the object beam passes through the interior and the opening before being ...

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