Back to results
US 10,379,379 B2Granted
Lens providing extended depth of focus and method relating to same
AssigneeAMO Groningen B.V.
InventorsMarrie H. Van Der Mooren, Hendrik A. Weeber, Patricia Ann Piers
Life of this patent
Estimating the term…
Abstract
Ophthalmic lenses providing an extended depth of focus include anterior and posterior faces, wherein at least part of the anterior or posterior face has a curvature based upon the summation of a cubic and/or pentic phase profile, and methods relating to same. The ophthalmic lens may be a contact lens, an intraocular lens (IOL), or other corrective lens.
Claims4
An ophthalmic lens having an extended depth of focus, comprising:
- an anterior face;
- and
- a posterior face,
- wherein at least a portion of one of the anterior face and the posterior face comprises a curvature defined by a summation of a cubic phase profile defined by f(x,y)=A(x3+y3) and a pentic phase profile defined by f(x,y)=C(x5+y5), wherein C is a scalar value,
- wherein the ophthalmic lens is configured to provide a white light MTF of at least 0.2 over a range of at least 2.0 D,
- wherein the ophthalmic lens is configured for placement adjacent a pupil such that an average phase contribution from the curvature over the pupil is zero,
- wherein the ophthalmic lens is configured to produce wavefront profiles having coma features in a rotationally symmetric theoretical eye model having a 4 mm pupil, and
- wherein an orientation of the wavefront profiles having the coma features remains constant with rotation of the ophthalmic lens.
5 more elements
Dependencies are inferred from the claim text.