Spectacle lens with small higher order aberrations
AssigneeRodenstock GmbH
InventorsEdda Wehner, Andrea Welk, Walter Haimerl, Helmut Altheimer, Gregor Esser
Life of this patent
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Abstract
A unifocal spectacle lens with an aspheric and/or atoric surface, or a progressive spectacle lens, in which the unifocal spectacle lens or the progressive spectacle lens has small higher order aberrations.
Claims7
A unifocal spectacle lens having an aspheric or atoric surface, wherein said lens exhibits a small spherical aberration of less than 0.1/mm at a distance r up to 30 mm from the vertex of the lens.
A unifocal spectacle lens having an aspheric or atoric surface, wherein said lens exhibits a small coma of less than 0.2/mm at a distance r up to 30 mm from the vertex of the lens.
A progressive spectacle lens having higher order aberrations comprising a coma, wherein the ratio of coma and addition is limited such that at an addition of 1, the maximum coma is 0.08;
- at an addition of 2, the maximum coma is 0.14;
- and at an addition of 3, the maximum coma is 0.18.
A progressive spectacle lens having higher order aberrations comprising a spherical aberration, wherein the ratio of spherical aberration and addition is limited such that at an addition of 1, the spherical aberration is between −0.05 and 0.06;
- at an addition of 2, the spherical aberration is between −0.13 and 0.11;
- and at an addition of 3, the spherical aberration is between −0.16 and 0.12.
Dependencies are inferred from the claim text.