Optical lens design for flattening a through-focus curve

Patent metadata

Field	Value
Publication number	US-12321044-B2
Application number	US-202318381129-A
Country	US
Kind code	B2
Filing date	Oct 17, 2023
Priority date	Sep 28, 2020
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

Described herein are systems and/or methods for forming an ophthalmic lens. An example method may comprise a step of determining a power profile based on a power profile function defined by a base optical power, an amount of spherical aberration at a radial distance from a geometric center of the lens, and a bump function. The example method may comprise a step of adjusting the power profile based at least on minimizing a shape metric of a through-focus curve.

First claim

What is claimed is:

1. An ophthalmic lens for slowing myopia progression, comprising:
a power profile defined by the following equation:
p ( r )= p 0 +sa×r 2 +Ψ( r ),

where r represents a radial distance (mm) from a geometric lens center; p 0 represents a base power of the lens in diopters (D), sa represents an amount of spherical aberration (D/mm 2 ), p(r) represents the lens power profile, and Ψ(r) represents a bump function that is further defined by the following equation:

Ψ
⁡
(
r
)

=

{

(

h

exp
⁢

(

-
1

)

)

×

exp
⁢

(

-

1

1
-

[

(

r
-

r
0

)

(

d
/
2

)

]

2
⁢
n

)

,

r
>

0
⁢

and
⁢

r

∈

]

⁢

r
0

-

d
2

,

r
0

+

d
2

[

0
,

otherwise

,

where h is the height (D) of the bump function, r 0 represents the center location (mm) of the bump function, d represents the width (mm) of the bump function, and n is an integer such that n>=1 which represents a flatness of the bump function;
and a transmittance profile that varies from the lens center to a lens periphery, wherein the transmittance profile improves myopia control efficacy and visual acuity of the lens as compared to a lens having the same power profile without an apodization profile.

2. The ophthalmic lens according to claim 1 , wherein a transmittance is highest at the lens center.

3. The ophthalmic lens according to claim 2 , wherein transmittance decreases from the lens center to a first radial distance from lens center, then increases from the first radi

Assignees

• Johnson & Johnson Vision Care

Inventors

• Wei Xin
• Jubin Philippe F
• Nankivil Derek
• Chen Minghan
• Williby Gregory

Classifications

• G02C7/105

  having inhomogeneously distributed colouring · CPC title

• G02C7/06

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

• G02C7/028 Primary

  Special mathematical design techniques · CPC title

• G02C2202/24

  Myopia progression prevention · CPC title

• G02C7/027

  considering wearer's parameters · CPC title