Ophthalmic lens having a changing refractive index

US5148205A · kind A · utility

Assignee

• Optische Werke G. Rodenstock · DE

Inventors

• Gunther Guilino · Munich, DE
• Helmut Altheimer · Munich, DE
• Herbert Pfeiffer · Munich, DE

Key dates

• Filing date: Feb 22, 1990
• Grant date: Sep 15, 1992
• Expiry date: Feb 22, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C2202/12
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An ophthalmic lens having a front and an eye-facing boundary surface and a varying refractive index, which contributes to the correction of aberrations. The ophthalmic lens is distinguished by having at least one system of surfaces at given level (n(x,y,z)=const.) with a constant refractive index, which are spaced the same distance at all points in the direction of their surface normals (parallel surfaces), and which, respectively their extension, intersect the axis connecting the lens apexes of the front surface and the eye-facing surface.