Patent · US Active

Ophthalmic lens having an extended depth of focus

US9968440B2 · kind B2 · utility

4Cited by

12References

8Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Xin Hong · Arlington, US
ZORAN MILANOVIC · Fort Worth, US
Xin Wei · Jacksonville, US

Key dates

Filing date	Feb 29, 2016
Grant date	May 15, 2018
Priority date	—
Expiry date	Feb 29, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/06
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

In certain embodiments, an ophthalmic lens includes an optic having an anterior surface, a posterior surface, and an optical axis. At least one of the anterior surface and the posterior surface includes a first zone extending from the optical axis to a first radial boundary and a second zone extending from the first radial boundary to the edge of the optic. The first zone includes an inner region and an outer region separated by a phase shift feature, the phase shift comprising a ridge extending outwardly from the inner region and the outer region.

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