Double progressive spectacle lens

US7300153B2 · kind B2 · utility

Assignee

• RODENSTOCK GMBH · DE

Inventors

• Edda Wehner · Grafing, DE
• Andrea Welk · Munich, DE
• Gregor Esser · Munich, DE
• Helmut Altheimer · Munich, DE
• Walter Haimerl · Munich, DE

Key dates

• Filing date: Dec 19, 2003
• Grant date: Nov 27, 2007
• Expiry date: Dec 19, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/068
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A double progressive spectacle lens in which a first prescribed progressive surface can be freely designed. The second progressive surface is then optimized in relation to the first prescribed surface. Thereby, the resulting spectacle lens avoids the need to employ a classic hourglass design progression zone and produces optical and geometric advantages such as an overall height of the progressive lens.