Method and apparatus for material processing with the aid of a laser

US4939336A · kind A · utility

Assignee

• Telemit Electronic GmbH · DE

Inventors

• Wilhelm Meyer · Krefeld, DE
• Ralf Engelhardt · Bodelshausen, DE

Key dates

• Filing date: Oct 3, 1988
• Grant date: Jul 3, 1990
• Expiry date: Oct 3, 2008

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2018/00904
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method and an apparatus for material processing with the aid of a laser the laser light is directed via a laser optical system onto the material and the light reemitted or scattered back by the material is conducted via the laser optical system onto a detector arrangement which is followed by an evaluating circuit for controlling the laser. The amplitude-versus-time profile of the light incident on the detector arrangement is evaluated and used to control the laser and/or an optical switch arranged in the output beam path of the laser.