Patent · US Active

Method and system for providing an intraocular lens having an improved depth of field

US9089421B2 · kind B2 · utility

4Cited by

0References

13Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Daniel Robert Carson · Fort Worth, US
Myoung-Taek Choi · Arlington, US
Shinwook Lee · Arlington, US

Key dates

Filing date	Dec 3, 2013
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Jan 10, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2/1613
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, an optic axis and at least one diffractive grating pattern. The diffractive grating pattern(s) are disposed on at least one of the anterior surface and the posterior surface. The diffractive grating pattern(s) includes zones corresponding to distance ranges from the optic axis. Each of the zones has a plurality of echelettes having a radius of curvature corresponding to a focal length. The radius of curvature for each of at least a portion of the zones is different from the radius of curvature for another of the zones.

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