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US 12,245,931 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.
Claims3
A method comprising:
- receiving an intraocular lens prescription;
- and
- fabricating an optic for an intraocular lens, based on the intraocular lens prescription,
- wherein the optic comprises 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 comprising a first echelette of the plurality of echelettes having a first width in r-squared space, and second echelette of the plurality of echelettes having a second width in r-squared space that is different than the first width in r-squared space.
2 more elements
Dependencies are inferred from the claim text.