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US 12,653,665 B2Granted
Lenses having diffractive profiles with irregular width for vision treatment
AssigneeAMO Groningen B.V.
InventorsRobert Rosen, Franck Gounou
Life of this patent
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Abstract
Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for providing improved extended depth of focus lenses. Exemplary ophthalmic lenses can include an optic including a diffractive profile including a plurality of echelettes, each echelette of the diffractive profile having a different width in r-squared space than any other echelette of the diffractive profile and each echelette of the diffractive profile being configured to distribute light to a distance focus.
Claims6
An ophthalmic lens comprising:
- an optic including a first surface and a second surface each disposed about an optical axis and extending radially outward from the optical axis to an outer periphery of the optic, the first surface facing opposite the second surface, and a diffractive profile including a plurality of echelettes disposed on the first surface such that each one of the plurality of echelettes on the first surface between the optical axis and the outer periphery of the optic has a different width in r-squared space than any other echelette on the first surface between the optical axis and the outer periphery of the optic, and
- a first set of two of the plurality of echelettes that are adjacent on the first surface between the optical axis and the outer periphery of the optic and that combined have a first width in r-squared space, the first set being positioned at the optical axis, and
- a second set of two of the plurality of echelettes that are adjacent on the first surface between the optical axis and the outer periphery of the optic and that have a same step height and that combined have a second width in r-squared space that is different than the first width, and the second set being adjacent to the first set and positioned radially outward of the first set.
Dependencies are inferred from the claim text.