Ophthalmic lenses with reduced chromatic blur
First Claim
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1. An ophthalmic lens, comprising a spherical power Φ
- , a diffractive element comprising a first spherical power Φ
D and a refractive element comprising a second spherical power Φ
R, wherein the diffractive element comprises a material having an Abbe number of about 30 to about 60, wherein;
and wherein VR is the Abbe number of the refractive element of the lens and VD is an effective Abbe number of the diffractive element of the lens.
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Abstract
The present invention provides single vision and multifocal lenses, as well as methods for their production, having a transverse chromatic aberration enabling provision of a lens the performance of which is equivalent to a refractive lens with a higher Abbe number.
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Citations
16 Claims
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1. An ophthalmic lens, comprising a spherical power Φ
- , a diffractive element comprising a first spherical power Φ
D and a refractive element comprising a second spherical power Φ
R, wherein the diffractive element comprises a material having an Abbe number of about 30 to about 60, wherein;
and wherein VR is the Abbe number of the refractive element of the lens and VD is an effective Abbe number of the diffractive element of the lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- , a diffractive element comprising a first spherical power Φ
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14. A method for producing a customized lens comprising the step of providing a lens comprising a spherical power Φ
- , a diffractive element comprising a first spherical power Φ
D and a refractive element comprising a second spherical power Φ
R, wherein the diffractive element comprises a material having an Abbe number of about 30 to about 60, wherein;
and wherein VR is the Abbe number of the refractive element of the lens and VD is an effective Abbe number of the diffractive element of the lens. - View Dependent Claims (15, 16)
- , a diffractive element comprising a first spherical power Φ
Specification