Multi-ring lens, systems and methods for extended depth of focus

• US 10,197,815 B2
• Filed: 05/09/2016
• Issued: 02/05/2019
• Est. Priority Date: 05/13/2008
• Status: Active Grant

• Current Assignee: Amo Groningen B.V (Johnson & Johnson)
• Original Assignee: Amo Groningen B.V (Johnson & Johnson)
• Inventors: Weeber, Hendrik A.
• Primary Examiner(s): Schwartz, Jordan
• Application Number:
  US15/149,574
• Publication Number:
  US 20160320633A1
• Time in Patent Office: 1,002 Days
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61F 2/1451 Inlays or onlays
• CPC Class Codes: A61F 2/1602 Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1618 Multifocal lenses
• CPC Class Codes: A61F 2/1637 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 Class Codes: A61F 2/164 Aspheric lenses
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2240/002 Designing or making customized prostheses
• CPC Class Codes: G02B 27/0075 with means for altering, e.g. increasing, the depth of field or depth of focus
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 2202/22 Correction of higher order and chromatic aberrations, wave front measurement and calculation
• CPC Class Codes: G02C 7/022 Ophthalmic lenses having special refractive features achieved by special materials or material structures G02C7/049 takes precedence
• CPC Class Codes: G02C 7/024 Methods of designing ophthalmic lenses
• CPC Class Codes: G02C 7/027 considering wearer's parameters
• CPC Class Codes: G02C 7/041 bifocal; multifocal
• CPC Class Codes: G02C 7/044 Annular configuration, e.g. pupil tuned
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence

Abstract

Systems and methods for providing enhanced image quality across a wide and extended range of foci encompass vision treatment techniques and ophthalmic lenses such as contact lenses and intraocular lenses (IOLs). Exemplary IOL optics can include an aspheric refractive profile imposed on a first or second lens surface, and a diffractive profile imposed on a first or second lens surface. The aspheric refractive profile can focus light toward a far focus. The diffractive profile can include a central zone that distributes a first percentage of light toward a far focus and a second percentage of light toward an intermediate focus. The diffractive profile can also include a peripheral zone, surrounding the central zone, which distributes a third percentage of light toward the far focus and a fourth percentage of light toward the intermediate focus.

Claims

1. An ophthalmic lens, comprising:

means for compensating for ocular spherical aberration comprising a lens surface having an aspherical profile; and

means for compensating for ocular chromatic aberration comprising a lens surface having a diffractive profile including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone;

wherein the means for compensating for ocular chromatic aberration and the means for compensating for ocular spherical aberration when combined provide a far focus corresponding to a base power and an intermediate focus, and provide an extended depth of focus for the ophthalmic lens, and wherein a percentage of light distributed by the peripheral zone toward the far focus is 63% and a percentage of light distributed by the peripheral zone toward the intermediate focus is 21%.

2. The ophthalmic lens according to claim 1, wherein a difference between the far focus and the intermediate focus corresponds to an add power, and the base power is within a range from 5 to 34 Diopters and the add power is within a range from 1 to 2.5 Diopters.

3. The ophthalmic lens according to claim 1, wherein the means for compensating for ocular chromatic aberration comprises a lens material construction, the construction comprising a first material providing a first optical dispersion and a second material providing a second optical dispersion different from the first optical dispersion.

19. The ophthalmic lens of claim 1, wherein the central zone has two echelettes.

20. The ophthalmic lens of claim 1, wherein the peripheral zone includes at least seven echelettes.

21. The ophthalmic lens of claim 1, wherein the plurality of echelettes of the peripheral zone each have an equal step height.

22. The ophthalmic lens of claim 1, wherein the central zone has an outer diameter of about 2.2 millimeters.

23. The ophthalmic lens of claim 1, wherein the far focus corresponds to a first diffractive order of the diffractive profile.

24. The ophthalmic lens of claim 1, wherein the intermediate focus corresponds to a second diffractive order of the diffractive profile.

4. A method for manufacturing an ophthalmic lens for a patient, the method comprising:

inputting a patient parameter data profile specific for the patient, the patient parameter data profile comprising a patient spherical aberration parameter corresponding to a measured spherical aberration of the patient and a patient chromatic aberration parameter corresponding to a measured chromatic aberration of the patient;

generating an ophthalmic lens prescription for the patient, wherein the ophthalmic lens prescription is configured to compensate for the measured patient spherical aberration and the measured patient chromatic aberration and to provide a far focus corresponding to a base power and an intermediate focus, and provide an extended depth of focus for the ophthalmic lens, and wherein the ophthalmic lens prescription is configured to provide a partial correction of the measured patient chromatic aberration in the far focus and a larger correction of the measured patient chromatic aberration in the intermediate focus; and

manufacturing the ophthalmic lens based on the ophthalmic lens prescription, the ophthalmic lens including a first lens surface having an aspherical profile and a second lens surface having a diffractive profile including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone.

5. The method according to claim 4, wherein the ophthalmic lens prescription comprises a member selected from the group consisting of a contact lens prescription, a phakic intraocular lens prescription, a pseudophakic intraocular lens prescription, and a corneal inlay prescription.

6. The method according to claim 4, wherein the patient spherical aberration parameter comprises an ocular spherical aberration parameter.

7. The method according to claim 4, wherein the patient spherical aberration parameter comprises a corneal spherical aberration parameter.

8. The method according to claim 4, wherein the patient chromatic aberration parameter comprises an ocular chromatic aberration parameter.

9. The method according to claim 4, wherein the patient chromatic aberration parameter comprises a corneal chromatic aberration parameter.

10. A method for manufacturing an ophthalmic lens for a patient, the method comprising:

inputting an ophthalmic lens prescription for the patient; and

manufacturing the ophthalmic lens based on the ophthalmic lens prescription,

wherein the ophthalmic lens is configured to compensate for a patient spherical aberration and a patient chromatic aberration and to provide a far focus corresponding to a base power and an intermediate focus, and provide an extended depth of focus for the ophthalmic lens, and wherein the ophthalmic lens is configured to provide a partial correction of the patient chromatic aberration in the far focus and a larger correction of the patient chromatic aberration in the intermediate focus, the ophthalmic lens including a first lens surface having an aspherical profile and a second lens surface having a diffractive profile including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone.

11. The method according to claim 10, wherein the ophthalmic lens comprises a member selected from the group consisting of a contact lens, a phakic intraocular lens, a pseudophakic intraocular lens, and a corneal inlay.

12. A system for generating an ophthalmic lens for an eye of a patient, the system comprising:

an input that accepts a patient parameter data profile specific for the patient eye, the patient parameter data profile comprising a patient spherical aberration parameter corresponding to a measured spherical aberration of the patient eye and a patient chromatic aberration parameter corresponding to a measured chromatic aberration of the patient eye;

a module comprising a tangible medium embodying machine-readable code that generates an ophthalmic lens prescription for the patient eye, wherein the ophthalmic lens prescription is configured to compensate for the measured spherical and chromatic aberrations and to provide a far focus corresponding to a base power and an intermediate focus, and provide an extended depth of focus for the ophthalmic lens, and wherein the ophthalmic lens prescription is configured to provide a partial correction of the measured chromatic aberration in the far focus and a larger correction of the measured chromatic aberration in the intermediate focus, the ophthalmic lens including a first lens surface having an aspherical profile and a second lens surface having a diffractive profile including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone; and

a manufacturing assembly that fabricates the ophthalmic lens based on the ophthalmic lens prescription.

13. A system for manufacturing an ophthalmic lens for an eye of a patient, the system comprising:

an input that accepts an ophthalmic lens prescription for the patient eye, wherein the ophthalmic lens prescription is configured to compensate for a measured patient spherical aberration and a measured patient chromatic aberration of the patient eye, and to provide a far focus corresponding to a base power and an intermediate focus, and provide an extended depth of focus for the ophthalmic lens, and wherein the ophthalmic lens prescription is configured to provide a partial correction of the measured patient chromatic aberration in the far focus and a larger correction of the measured patient chromatic aberration in the intermediate focus, the ophthalmic lens including a first lens surface having an aspherical profile and a second lens surface having a diffractive profile including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone; and

a manufacturing assembly that fabricates the ophthalmic lens based on the ophthalmic lens prescription.

14. An ophthalmic lens, comprising:

a first surface and a second surface, the first and second surfaces disposed about an optical axis;

an aspherical refractive profile imposed on the first surface;

a diffractive profile imposed on the second surface and including a central zone and a peripheral zone, the central zone including at least two echelettes each having equal step heights, the peripheral zone including a plurality of echelettes each having a step height that is less than the step height of the at least two echelettes of the central zone, and wherein the diffractive profile is configured to diffract light to a far focus and an intermediate focus, and a percentage of light distributed by the peripheral zone toward the far focus is 63% and a percentage of light distributed by the peripheral zone toward the intermediate focus is 21%.

15. The ophthalmic lens of claim 14, wherein the diffractive profile is configured to compensate for ocular chromatic aberration.

16. The ophthalmic lens of claim 14, wherein the aspherical refractive profile is configured to compensate for ocular spherical aberration.

17. The ophthalmic lens of claim 14, wherein the central zone has two echelettes.

18. The ophthalmic lens of claim 14, wherein the aspherical refractive profile and the diffractive profile when combined provide an extended depth of focus for the ophthalmic lens.