Process and apparatus for the ablation of a surface

US5475197A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Walter G. Wrobel · Jena, DE
• Theo Lasser · Crissier, CH
• Peter Reimer · Ellwangen, DE
• Herbert Gross · Santa Ana, US
• Willi Ulrich · Aalen, DE

Key dates

• Filing date: Jun 14, 1993
• Grant date: Dec 12, 1995
• Expiry date: Jun 14, 2013

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00872
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

For defined ablation of a surface, successive partial regions of equal surface area are acted on by a radiation source, preferably a laser, through an optical system. The partial regions are smaller as regards surface area than the whole surface to be processed, so that the respective radiation source can be dimensioned in a less costly manner. Telescope optics with conical surfaces serve as optical systems suitable for this purpose.