Single microstructure lens, systems and methods
AssigneeAMO Groningen B.V.
InventorHendrik A. Weeber
Life of this patent
Estimating the term…
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 a circular surface structure which acts as a diffractive or phase shifting profile. In some cases, a single ring IOL includes an anterior face and a posterior face, where a profile can be imposed on the anterior or posterior surface or face. The profile can have an inner portion such as a microstructure or central echelette, and an outer portion. Between the inner portion and the outer portion, there may be a transition zone that connects the inner and outer portions.
Claims44
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the face opposing the face upon which the isolated echelette is located has a toric profile.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the isolated echelette is disposed within a central zone of the lens.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the isolated echelette surrounds a central refractive zone of the lens.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the lens comprises a peripheral zone that surrounds the isolated echelette.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the isolated echelette is characterized by a surface area between 1 and 7 square millimeters.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the isolated echelette is characterized by a parabolic curve.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the lens further comprises a peripheral portion characterized by a spherical curve or an aspherical curve, and wherein the peripheral portion has a refractive profile.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the isolated echelette is characterized by a step height having a value within a range from about 0.5 μm and about 4 μm.
An ophthalmic lens comprising:
- an anterior face and an opposing posterior face, the faces disposed about an optical axis;
- and only one isolated echelette imposed on either the anterior face or the posterior face, wherein the lens provides an MTF volume of at least 35% over a continuous range of at least about 0.75 D.
Dependencies are inferred from the claim text.