Limited echelette lens, systems and methods

• US 8,820,927 B2
• Filed: 07/03/2013
• Issued: 09/02/2014
• Est. Priority Date: 12/18/2009
• 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): Collins, Darryl J
• Application Number:
  US13/934,556
• Publication Number:
  US 20130293836A1
• Time in Patent Office: 426 Days
• Field of Search: 351/159.01, 351/159.02, 35115911-15913, 351/159.15, 351/159.26, 351/159.35, 351/159.44, 35115974-15977
• US Class Current: 351/159.44
• CPC Class Codes: A61B 2034/104 Modelling the effect of the tool, e.g. the effect of an implanted prosthesis or for predicting the effect of ablation or burring
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61F 2/16 Intraocular lenses
• 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 2/1645 Toric lenses
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2230/0006 circular
• 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 7/022 Ophthalmic lenses having special refractive features achieved by special materials or material structures G02C7/049 takes precedence
• 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 7/049 Contact lenses having special fitting or structural features achieved by special materials or material structures
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence
• CPC Class Codes: G02C 7/061 Spectacle lenses with progressively varying focal power

Abstract

Methods for designing an ophthalmic lens that provides enhanced image quality across a wide and extended range of foci include utilizing pupil size measurements and based on the measurements determining the size of echelettes.

Claims

1. A method of designing an ophthalmic lens comprised of utilizing pupil size measurements and based on the measurements determining the size of an inner echelette and between 1 and 4 peripheral echelettes to impose on the surface of a lens, wherein at least 2 echelettes are not adjacent to each other and are separated by a refractive region.

2. The method according to claim 1, in which the measurements are based on the pupil sizes of a group of patients.

3. The method according to claim 1, wherein the inner and peripheral echelettes are characterized by a surface area between 1 and 7 square millimeters.

4. The method according to claim 1, wherein the inner and peripheral echelettes have the same surface area.

5. The method according to claim 1, wherein the inner echelette and the peripheral echelette(s) are not separated by a refractive region.

6. The method according to claim 5, wherein the inner echelette has a diameter within a range from about 1 mm to about 5 mm.

7. The method according to claim 1, wherein the lens further comprises a peripheral portion characterized by a spherical curve or an aspherical curve.

8. The method according to claim 1, wherein the inner and peripheral echelettes further comprise of transitions characterized by a step height having a value within a range from about 0.5 μ

m and about 4 μ

m.

9. The method according to claim 8, wherein the step heights provide a phase shift between about 0.25 and about 3 times the design wavelength.

10. The method according to claim 8, wherein the step height for at least 2 echelettes differ.

11. The method according to claim 8, wherein the surface area for at least 2 echelettes differ.