Prescription-dependent and individualization-dependent modification of the temporal peripheral nominal astigmatism and adaption of the object distance function to changed object distances for near and/or far vision

US9176331B2 · kind B2 · utility

Assignee

• RODENSTOCK GMBH · DE

Inventors

• Helmut Altheimer · Munich, DE
• Robert Kaster · Viersen, DE
• Martin Zimmermann · Abensberg, DE
• Wolfgang Becken · Munich, DE
• Gregor Esser · Munich, DE
• Dietmar Uttenweiler · Munich, DE
• Andrea Welk · Munich, DE

Key dates

• Filing date: Oct 13, 2011
• Grant date: Nov 3, 2015
• Expiry date: Oct 16, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/065
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Method for optimization of a progressive spectacle lens, which method comprises: defining a starting nominal astigmatism distribution for the spectacle lens; determining a transformed nominal astigmatism distribution and optimizing the spectacle lens on the basis of the transformed nominal astigmatism distribution, wherein the determination of a transformed nominal astigmatism distribution comprises multiplication of the maximum temporal nominal astigmatism of the starting nominal astigmatism distribution by a factor k as a result of which a modified maximum temporal astigmatism is obtained, wherein k is a function of a prescription value, and/or at least of one parameter of the spectacle lens or of the arrangement thereof in front of the eyes, and transformation of the starting nominal astigmatism distribution on the basis of the modified maximum temporal astigmatism.