Diffractive lenses with diffractive order shift

Patent metadata

Field	Value
Publication number	US-12539208-B2
Application number	US-202318163050-A
Country	US
Kind code	B2
Filing date	Feb 1, 2023
Priority date	Feb 1, 2022
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs). Embodiments may include a shift of a diffractive order.

First claim

What is claimed is:

1 . An ophthalmic lens comprising:
an optic including a diffractive profile formed by shifting a distance focus of the diffractive profile having a plurality of repeat periods from a first diffractive order to a second diffractive order by N diffractive orders by modifying the diffractive profile with a linear function that has a slope in r-squared space that reaches one wavelength multiplied by N at the end of each of the repeat periods.

2 . The ophthalmic lens of claim 1 , wherein the diffractive profile is defined by a first function that repeats in r-squared space for each of the repeat periods, and the linear function has been added to the first function in r-squared space.

3 . The ophthalmic lens of claim 2 , wherein the linear function repeats for each of the repeat periods.

4 . The ophthalmic lens of claim 3 , wherein the diffractive profile includes a plurality of parabolic optical zones or a plurality of non-parabolic optical zones.

5 . The ophthalmic lens of claim 4 , wherein the diffractive profile includes a plurality of optical zones and a plurality of transition zones between the plurality of optical zones, wherein the plurality of transition zones includes a periodic spacing or an aperiodic spacing.

6 . The ophthalmic lens of claim 1 , wherein the distance focus is shifted from the first diffractive order to the second diffractive order by one diffractive order or two diffractive orders.

7 . The ophthalmic lens of claim 6 , wherein the first diffractive order is the 0 th diffractive order and the second diffractive order is the 1 st diffractive order or the 2 nd diffractive order.

8 . The ophthalmic lens of claim 6 , wherein the diffractive profile includes a plurality of optical zones, at least one of the plurality of optical zones having a height that is less than one wavelength.

9 . The ophthalmic lens of claim 8 , wherein the diffractive profile includes a set of at least two optical zones that repeats upon the optic in r-squared space.

10 . The ophthalmic lens of claim 6 , wherein at least one of the plurality of optical zones has a height that is greater than one wavelength.

11 . The ophthalmic lens of claim 10 , wherein the diffractive profile includes a set of at least two optical zones that repeats upon the optic in r-squared space.

Assignees

• Amo Groningen Bv

Inventors

• Faria Ribeiro Miguel
• Jenkins Sanchez Mark

Classifications

• G02C7/06

  bifocal; multifocal {; progressive (G02C7/041 takes precedence)} · CPC title

• G02C7/028

  Special mathematical design techniques · CPC title

• A61F2/1654 Primary

  Diffractive lenses · CPC title

• G02C2202/22

  Correction of higher order and chromatic aberrations, wave front measurement and calculation · CPC title

• G02C2202/20

  Diffractive and Fresnel lenses or lens portions · CPC title