Patent · US Active

Lens having a plurality of surfaces with zones

US9164201B2 · kind B2 · utility

11Cited by

0References

14Claims

0Family size

Assignee

Essilor International (Compagnie Generale d'Optique) · FR

Inventors

Bruno FERMIGIER · Maisons-Alfort, FR
Eric GACOIN · Charenton-le-Pont, FR

Key dates

Filing date	Sep 6, 2012
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Oct 13, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02C2202/20
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lens (1) includes a plurality of optical surfaces (S1, S2) each of which is made up of an alternation of active zones (ZA1, ZA2) and separation zones (ZS1, ZS2). The active zones of one of the surfaces are situated beside the separation zones of the other surface. The shape of one at least of the optical surfaces is then adapted into the separation zones in order to augment the acute angles that are situated at the convergence of active zones and separation zones. The lens can thus be made with improved accuracy with respect to a target optical function.

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