US2010161051A1PendingUtilityA1
Intraocular lens with extended depth of focus
Est. expiryDec 18, 2028(~2.4 yrs left)· nominal 20-yr term from priority
Inventors:Xin Hong
A61F 2/1613A61F 2/1624G02C 7/041A61F 2/1616A61F 2/164A61F 2/16G02C 2202/20G02C 7/04A61F 2/1618A61F 2/1637G02C 7/02
58
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
An ophthalmic lens is disclosed, one embodiment comprising an optic having an anterior surface and a posterior surface disposed about an optical axis, wherein at least one of the surfaces has a profile characterized by superposition of a base profile and an auxiliary profile, the auxiliary profile comprising a continuous pattern of surface deviations from the base profile. The auxiliary profile is a sinusoidal profile and can be amplitude modulated, frequency modulated or both amplitude and frequency modulated. The ophthalmic lens can be an IOL.
Claims
exact text as granted — not AI-modified1 . An ophthalmic lens, comprising
an optic having an anterior surface and a posterior surface disposed about an optical axis, wherein: at least one of the surfaces has a profile characterized by superposition of a base profile and an auxiliary profile, the auxiliary profile comprising a continuous pattern of surface deviations from the base profile.
2 . The ophthalmic lens of claim 1 , wherein the anterior surface and the posterior surface are convex.
3 . The ophthalmic lens of claim 1 , where in the anterior surface and the posterior surface are concave.
4 . The ophthalmic lens of claim 1 , wherein the base profile is generally spherical.
5 . The ophthalmic lens of claim 1 , wherein the base profile is symmetric about an optical axis of the ophthalmic lens.
6 . The ophthalmic lens of claim 1 , wherein the base profile is generally aspherical.
7 . The ophthalmic lens of claim 1 , wherein the auxiliary profile is symmetric about an optical axis of the ophthalmic lens.
8 . The ophthalmic lens of claim 1 , wherein the auxiliary profile is a sinusoidal profile.
9 . The ophthalmic lens of claim 8 , wherein the profile of the surface having said auxiliary profile is defined by the following relation:
y
=
a
cos
(
2
π
r
2
b
)
,
wherein,
a denotes the amplitude of the sinusoidal curve and the diffraction efficiency at different foci; and
b denotes the periodicity and add power.
10 . The ophthalmic lens of claim 8 , wherein the sinusoidal profile is amplitude modulated with a cosine function operable to shift light to a selected diffraction order, wherein the amplitude modulated profile of the surface having said auxiliary profile is defined by the following relation:
y
=
a
cos
(
π
r
2
r
0
)
cos
(
2
π
r
2
b
)
wherein,
a denotes the amplitude of the sinusoidal curve and the diffraction efficiency at different foci;
b denotes the periodicity and add power;
r denotes a radial distance from an optical axis of the lens; and
r 0 is the termination pupil radius of the cosine modulation.
11 . The ophthalmic lens of claim 8 , wherein the sinusoidal profile is frequency modulated with a cosine function operable to vary the effective add power of the optic as a function of pupil radius, wherein the frequency modulated profile of the surface having said auxiliary profile is defined by the following relation:
y
=
a
cos
(
2
π
r
2
bf
(
r
)
)
wherein,
a denotes the amplitude of the sinusoidal curve and the diffraction efficiency at different foci;
b denotes the periodicity and add power;
r denotes a radial distance from an optical axis of the lens; and
f(r) is the square root of the pupil radius.
12 . The ophthalmic lens of claim 8 , wherein the sinusoidal profile is amplitude and frequency modulated with a cosine function operable to shift light to a selected focal plane, wherein the amplitude and frequency modulated profile of the surface having said auxiliary profile is defined by the following relation:
y
=
a
cos
(
π
r
2
r
0
)
cos
(
2
π
r
2
bf
(
r
)
)
wherein,
a denotes the amplitude of the sinusoidal curve and the diffraction efficiency at different foci;
b denotes the periodicity and add power;
r denotes a radial distance from an optical axis of the lens;
r 0 is the termination pupil radius of the cosine modulation; and
f(r) is the square root of the pupil radius.
13 . The ophthalmic lens of claim 1 , wherein the ophthalmic lens comprises an IOL.
14 . The ophthalmic lens of claim 13 , wherein the IOL is a monofocal IOL.
15 . The ophthalmic lens of claim 13 , wherein the IOL is an accommodative IOL.
16 . The ophthalmic lens of claim 13 , wherein the IOL is a multifocal IOL.
17 . The ophthalmic lens of claim 1 , wherein the anterior surface and the posterior surface are refractive surfaces.Join the waitlist — get patent alerts
Track US2010161051A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.