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US 11,844,688 B2Granted
Achromatic lenses with zone order mixing for vision treatment
AssigneeAMO Groningen B.V.
InventorsRobert Rosen, Franck Gounou
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Abstract
Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as haloes and glare. Exemplary ophthalmic lenses can include an optic including a diffractive achromat configured to direct light to a common focus, with individual zones of the diffractive achromat directing light to the common focus in at least two different diffractive orders utilizing at least two different diffractive powers.
Claims6
An intraocular lens comprising:
- an optic including a diffractive achromat configured to direct light to a common focus, with individual zones of the diffractive achromat directing light to the common focus in at least two different diffractive orders utilizing at least two different diffractive powers,
- wherein the individual zones of the diffractive achromat comprise a plurality of echelettes, and a first echelette of the plurality of echelettes has a first width in r-squared space, and a second echelette of the plurality of echelettes has a second width in r-squared space that is different than the first width in r-squared space.
Dependencies are inferred from the claim text.