Progressive spectacle lens

US6964478B2 · kind B2 · utility

Assignee

• RODENSTOCK GMBH · DE

Inventors

• Andrea Welk · Munich, DE
• Peter Baumbach · Hersbruck, DE
• Walter Haimerl · Munich, DE
• Herbert Pfeiffer · Munich, DE
• Gregor Esser · Munich, DE
• Helmut Altheimer · Munich, DE
• Rainer Dorsch · Reutlingen, DE
• Martin L. Zimmerman · Chicago, US
• Norbert Awrath · Munich, DE
• Jochen Brosig · Grünwald, DE
• Werner Mueller · Rain, DE
• Martin Wechs · Munich, DE
• Stephan Haser · Munich, DE
• Winfried Nikolaus · Haar, DE

Key dates

• Filing date: Oct 24, 2002
• Grant date: Nov 15, 2005
• Expiry date: Jan 23, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/061
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A spectacle lens is provided with a region (distance portion) designed for viewing at greater distances and, in particular, “to infinity”, a region (near portion) designed for viewing at short distances and, in particular, “reading distances”, and a progression zone disposed between the distance portion and the near portion, in which the power of the spectacle lens increases from the value in the distance reference point located in the distance portion to the value at the near reference point located in the near portion along a line (principal meridian) curving towards the nose. The invention is marked by specific conditions for the astigmatic deviation and/or the mean “as worn” power being observed.