MULTI-RING LENS, SYSTEMS AND METHODS FOR EXTENDED DEPTH OF FOCUS
First Claim
1. An ophthalmic lens, comprising:
- a first surface and a second surface, the first and second surfaces disposed about an optical axis;
an aspheric refractive profile imposed on the first or second surface; and
a diffractive profile imposed on the first or second surface,wherein the aspheric refractive profile focuses light toward a far focus, andwherein the diffractive profile comprises a central zone that distributes a first percentage of light toward a far focus and a second percentage of light toward an intermediate focus, and a peripheral zone, surrounding the central zone, that distributes a third percentage of light toward the far focus and a fourth percentage of light toward the intermediate focus.
1 Assignment
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Accused Products
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 an aspheric refractive profile imposed on a first or second lens surface, and a diffractive profile imposed on a first or second lens surface. The aspheric refractive profile can focus light toward a far focus. The diffractive profile can include a central zone that distributes a first percentage of light toward a far focus and a second percentage of light toward an intermediate focus. The diffractive profile can also include a peripheral zone, surrounding the central zone, which distributes a third percentage of light toward the far focus and a fourth percentage of light toward the intermediate focus.
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Citations
54 Claims
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1. An ophthalmic lens, comprising:
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a first surface and a second surface, the first and second surfaces disposed about an optical axis; an aspheric refractive profile imposed on the first or second surface; and a diffractive profile imposed on the first or second surface, wherein the aspheric refractive profile focuses light toward a far focus, and wherein the diffractive profile comprises a central zone that distributes a first percentage of light toward a far focus and a second percentage of light toward an intermediate focus, and a peripheral zone, surrounding the central zone, that distributes a third percentage of light toward the far focus and a fourth percentage of light toward the intermediate focus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An ophthalmic lens, comprising:
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means for compensating for ocular spherical aberration; means for compensating for ocular chromatic aberration; and means for providing an extended depth of focus. - View Dependent Claims (26, 27, 28, 29)
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30. An ophthalmic lens, comprising:
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means for compensating for ocular spherical aberration; and means for compensating for ocular chromatic aberration; wherein the means for compensating for ocular chromatic aberration and the means for compensating for ocular spherical aberration when combined provide a far focus corresponding to a base power and an intermediate focus corresponding to an add power, and wherein a difference between the base power and the add power defines an extended depth of focus for the lens. - View Dependent Claims (31, 32, 33, 34)
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35. An ophthalmic lens, comprising:
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means for compensating for corneal spherical aberration; means for compensating for ocular chromatic aberration; and means for providing an extended depth of focus. - View Dependent Claims (36, 37, 38, 39)
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40. An ophthalmic lens, comprising:
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means for compensating for corneal spherical aberration; and means for compensating for ocular chromatic aberration; wherein the means for compensating for ocular chromatic aberration and the means for compensating for ocular spherical aberration when combined provide a modulation transfer function value at 50 cycles per millimeter of at least 10, for an intermediate focus, at 3 mm and 5 mm pupil diameters. - View Dependent Claims (41, 42, 43, 44)
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45. A method for generating an ophthalmic lens prescription for a patient, the method comprising:
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inputting a patient parameter data profile specific for the patient, the patient parameter data profile comprising a patient spherical aberration parameter corresponding to a measured spherical aberration of the patient and a patient chromatic aberration parameter corresponding to a measured chromatic aberration of the patient; and generating the ophthalmic lens prescription for the patient, wherein the ophthalmic lens prescription is configured to compensate for the measured patient spherical aberration and the measured patient chromatic aberration and to provide a far focus corresponding to a base power and an intermediate focus corresponding to an add power, and wherein a difference between the base power and the add power defines an extended depth of focus for the ophthalmic lens. - View Dependent Claims (46, 47, 48, 49, 50)
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51. A method for fabricating an ophthalmic lens prescription for a patient, the method comprising:
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inputting an ophthalmic lens prescription for a patient; and fabricating the ophthalmic lens based on the prescription, wherein the ophthalmic lens is configured to compensate for a patient spherical aberration and a patient chromatic aberration, wherein the lens is configured to provide a far focus corresponding to a base power and an intermediate focus corresponding to an add power, and wherein a difference between the base power and the add power defines an extended depth of focus for the ophthalmic lens. - View Dependent Claims (52)
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53. A system for generating an ophthalmic lens prescription for an eye of a patient, the system comprising:
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an input that accepts a patient parameter data profile specific for the patient eye, the patient parameter data profile comprising a patient spherical aberration parameter corresponding to a measured spherical aberration of the patient eye and a patient chromatic aberration parameter corresponding to a measured chromatic aberration of the patient eye; and a module comprising a tangible medium embodying machine-readable code that generates the ophthalmic lens prescription for the eye, wherein the ophthalmic lens prescription is configured to compensate for the measured spherical and chromatic aberrations and to provide a far focus corresponding to a base power and an intermediate focus corresponding to an add power, and wherein a difference between the base power and the add power defines an extended depth of focus for the ophthalmic lens.
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54. A system for fabricating an ophthalmic lens for an eye of a patient, the system comprising:
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an input that accepts an ophthalmic lens prescription for the patient eye, wherein the ophthalmic lens prescription is configured to compensate for a measured patient spherical aberration and a measured patient chromatic aberration of the patient eye, and to provide a far focus corresponding to a base power and an intermediate focus corresponding to an add power, wherein a difference between the base power and the add power defines an extended depth of focus for the ophthalmic lens prescription; and a manufacturing assembly that fabricates the ophthalmic lens based on the lens prescription.
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Specification