Method for producing a marking on a spectacle lens

US4912298A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Erwin J. Daniels · Aalen, DE
• Hermann Schurle · Aalen, DE

Key dates

• Filing date: Sep 16, 1988
• Grant date: Mar 27, 1990
• Expiry date: Sep 16, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M5/267
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method of producing a marking on a spectacle lens. For producing the marking, those regions on the surface of the spectacle lens which are to define the form of the marking are irradiated with an excimer laser through a mask which contains the marking in the form of a cutout.