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US 12,447,009 B2Granted
Achromatic lenses and lenses having diffractive profiles with irregular width for vision treatment
AssigneeAMO Groningen B.V.
InventorsFranck Gounou, Hendrik A. Weeber, Robert Rosen, Carmen Canovas Vidal, Patricia A. Piers
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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 at least one set of echelettes, each echelette of the set having a different width in r-squared space than any other echelette of the set and the at least one set of echelettes repeating at least once upon the optic.
Claims16
A method comprising:
- fabricating an optic for an ophthalmic lens, the optic including a diffractive profile including at least one set of echelettes, each echelette of the set having a different width in r-squared space than any other echelette of the set and the at least one set of echelettes repeating at least once upon the optic, and at least two echelettes of the set have a same step height or a same step offset,
- wherein the at least one set of echelettes is positioned in a central zone of the optic that an optical axis pass through;
- wherein the echelettes of the at least one set of echelettes are adjacent to each other;
- wherein a first one of the at least one set of echelettes repeats adjacent to a second one of the set of echelettes;
- wherein at least one echelette of the set is configured to distribute light to a near focus or to an intermediate focus;
- and
- wherein the diffractive profile forms an extended depth of focus.
4 more elements
Dependencies are inferred from the claim text.