Population of an eye model for optimizing spectacle lenses with measurement data

US10613347B2 · kind B2 · utility

Assignee

• RODENSTOCK GMBH · DE

Inventors

• Stephan Trumm · Munich, DE
• Wolfgang Becken · Munich, DE
• Helmut Altheimer · Munich, DE
• Adam Muschielok · Munich, DE
• Yohann Bénard · Munich, DE
• Gregor Esser · Munich, DE
• Anne Seidemann · Munich, DE
• Werner Mueller · Rain, DE

Key dates

• Filing date: Jan 24, 2018
• Grant date: Apr 7, 2020
• Expiry date: Oct 12, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Optimizing and producing a lens by defining an individual eye model, in which a shape of a corneal front surface of a model eye, and a reference aberration at an evaluation surface within the model eye are defined based on individual measurement values for the lens wearer's eye, on standard values, or based on provided individual refraction data; specifying first and second surfaces for the lens to be optimized; determining the path of a main ray through a visual point a surface of the lens into the model eye up to the evaluation surface; evaluating an aberration of a wavefront propagating along the main ray and resulting from a spherical wavefront incident on the first surface of the lens at the evaluation surface in comparison to the reference aberration; and iteratively varying the surface of the lens until the evaluated aberration corresponds to a predetermined target aberration.