Patent · US Active

Method for determining an aspherization layer for an ophthalmic lens

US8608312B2 · kind B2 · utility

1Cited by

7References

19Claims

0Family size

Assignee

Essilor International (Compagnie Generale d'Optique) · FR

Inventors

Cyril Guilloux · Charenton-le-Pont, FR
Soazic Mousset · Charenton-le-Pont, FR

Key dates

Filing date	Jan 11, 2010
Grant date	Dec 17, 2013
Priority date	—
Expiry date	Apr 13, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/025
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a method for determining an aspherization layer for an ophthalmic lens for a wearer for whom a power and an astigmatism have been prescribed. The method can be used equally satisfactorily on a unifocal or a multifocal lens. The invention also extends to the method for determining an ophthalmic lens from an aspoherization layer obtained by the method. The invention improves the optical performance of lenses obtained from semi-finished lenses in which the complex surface is unknown.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.