Patent ID: 7553016

Claim:
A lens for spectacles which is delimited by a first and a second lens surface which are spaced apart from and located opposite each other, the first surface being arranged to face towards the inner side of the spectacles, near the face of the user when the spectacles are worn, the second opposite surface facing towards the opposite outer side of the spectacles, first cross-sectional curves being defined on the lens by the intersection of the first and second lens surfaces with a substantially vertical plane which is perpendicular to the lens, wherein the first cross-sectional curves have negative curvature with the concavity directed towards the outer side of the spectacles, wherein second cross-sectional curves are defined on the lens by the intersection of the first and second lens surfaces with a substantially horizontal plane which is perpendicular to the lens, such that when the spectacles are worn, the second cross-sectional curves of the lens have a positive curvature with the concavity directed towards the inner side of the spectacles.