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US 2014/0350672 A1Published application
Intraocular Lens with Extended Depth of Focus
AssigneeNovartis AG
InventorXin Hong
Life of this patent
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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.
Claims25
1-17. (canceled)
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, wherein the auxiliary profile is a sinusoidal profile, and 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;
- r0 is the termination pupil radius of the cosine modulation;
- and
- f(r) is the square root of the pupil radius.
41 more elements
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 sinusoidal profile, the auxiliary sinusoidal profile comprising a continuous pattern of surface deviations from the base profile, wherein the auxiliary sinusoidal profile is modulated with a cosine function as defined by at least one of the following equations:
- y
- =
- a
-
-
- cos
-
- (
- π
-
-
- r
- 2
-
-
- r
- 0
- )
-
- cos
-
- (
- 2
-
- π
-
-
- r
- 2
- b
- )
- ;
- y
- =
- a
-
-
- cos
-
- (
- 2
-
- π
-
-
- r
- 2
- bf
-
- (
- r
- )
- )
- ;
- and
- 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 the radial distance from the optical axis of the lens;
- r0 denotes the termination pupil radius of the cosine modulation;
- and
- f(r) denotes the square root of r.
97 more elements
Dependencies are inferred from the claim text.