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US 11,751,990 B2Granted
Full depth of focus intraocular lens
AssigneeAlcon Inc.
InventorYueai Liu
Life of this patent
Estimating the term…
Abstract
An ophthalmic lens comprising an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil. A first microstructure pattern formed in a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.
Claims5
An intraocular lens (IOL) comprising:
- an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil;
- and
- a first microstructure pattern formed in the first surface region, the first microstructure pattern comprising a plurality of structures having non-repetitive and non-gradual step heights for introducing a phase perturbation into an optical path of incoming light such that a continuous full depth of focus for photopic vision is provided,
- wherein the first microstructure pattern is defined by a step pattern.
1 more element
Dependencies are inferred from the claim text.