Achromatic lenses and lenses having diffractive profiles with irregular width for vision treatment

Patent metadata

Field	Value
Publication number	US-12447009-B2
Application number	US-202318544133-A
Country	US
Kind code	B2
Filing date	Dec 18, 2023
Priority date	Dec 30, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

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.

First claim

What is claimed is:

1. 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.

2. The method of claim 1 , further comprising receiving an ophthalmic lens prescription, and fabricating the optic based on the ophthalmic lens prescription.

3. The method of claim 2 , further comprising determining one or more of the diffractive profile or a refractive profile of the optic based on the ophthalmic lens prescription.

4. The method of claim 1 , wherein the at least one set of echelettes includes at least three echelettes.

5. The method of claim 1 , wherein the at least one set of echelettes repeats at least twice upon the optic.

6. The method of claim 1 , wherein at least two of the echelettes of the set have a different step height.

7. The method of claim 1 , wherein the at least two echelettes of the set have the same step height.

8. The method of claim 1 , wherein the at least two echelettes of the set have the same step height and the same step offset.

9. The method of claim 1 , wherein the at least two echelettes of the set have the same step offset.

10. The method of claim 1 , wherein each echelette of the set has the same step offset.

11. The method of claim 1 , wherein each echelette of the set has the same step height.

12. The method of claim 1 , wherein the at least one set repeats a number of times on the optic to cover an entire pupillary zone of the optic.

13. The method of claim 1 , wherein the at least one set of echelettes repeats at least three times upon the optic.

14. The method of claim 1 , wherein one of the at least two echelettes of the set is configured to distribute light to a near focus.

15. The method of claim 1 , wherein one of the at least two echelettes of the set is configured to distribute light to an intermediate focus.

16. The method of claim 1 , wherein the diffractive profile is configured to modify chromatic aberration in a distance focus.

Assignees

• Amo Groningen Bv

Inventors

• Gounou Franck
• Weeber Hendrik A
• Rosen Robert
• Canovas Vidal Carmen
• Piers Patricia A

Classifications

• G05B2219/2617

  Eye, ophthalmic, surgery system · CPC title

• A61F2/1654

  Diffractive lenses · CPC title

• A61F2/1637

  Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses · CPC title

• A61F2/1624

  having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside · CPC title

• B29D11/00961

  using microprocessors or computers · CPC title