Method for storing information on a spectacles lens, spectacles lens blank or spectacles lens semi-finished product

US10976572B2 · kind B2 · utility

Assignee

• Carl Zeiss Vision International GmbH · DE

Inventors

• Andreas Dangelmaier · Aalen, DE
• Simon Holtmann · McLaren Vale, AU
• Roland Schoen · Aalen, DE
• Matthias Hornauer · Lauchheim, DE

Key dates

• Filing date: May 23, 2017
• Grant date: Apr 13, 2021
• Expiry date: May 23, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C13/003
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Information is stored in an optical element in the form of a glass or plastic body embodied as spectacles lens, spectacles lens blank or spectacles lens semi-finished product. The information in the form of data is stored on or in the glass or plastic body by creating at least one marking with a marking system. The marking can be read by a reading apparatus. The marking system has an interface for reading information individualizing the optical element. The marking is created permanently by the marking system on or in the optical element at a definition point of a local body-specific coordinate system set by two points on or in the optical element. In this body coordinate system, the manufacturer specifies the position of the lens horizontal and/or the far and/or the near and/or the prism reference point.