Method for determining an ophthalmic lens
AssigneeEssilor International
InventorsMélanie HESLOUIS, Olivier ROUSSEL, Laurent CALIXTE
Life of this patent
Estimating the term…
Abstract
A method for determining an ophthalmic lens adapted to a wearer, the method including: receiving wearer data including at least the ophthalmic prescription of the wearer; receiving a set of object points associated with target optical performances based on the wearer data; determining an ophthalmic lens adapted to the wearer, the ophthalmic lens providing optical performances, for light rays propagating from the set of object points to the center of rotation of the eye of the wearer passing through the ophthalmic lens, the closest to the target optical performances.
Claims15
A method implemented by computer means for determining an ophthalmic lens adapted to a wearer, the method comprising:
- receiving wearer data comprising at least the ophthalmic prescription of said wearer;
- receiving a set of object points associated with target optical performances based on the wearer data;
- determining an ophthalmic lens adapted to the wearer, said ophthalmic lens providing optical performances, for light rays propagating from the set of object points to the center of rotation of the eye of the wearer passing through the ophthalmic lens, the closest to the target optical performances.
A pair of progressive ophthalmic lenses adapted for a wearer in worn conditions, wherein for a given set of object points corresponding to gaze directions within an angular disc of 35° of diameter centered on a direction of gaze corresponding to an angle of declination of 8° and 0° of azimuth angle and with a sampling step of 2°,
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- object
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- points
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- object
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- is smaller than or equal to 0.026 with Ar the resulting astigmatism at the given object point through the right progressive ophthalmic lens, Al the resulting astigmatism at the given object point through the left progressive ophthalmic lens and Add the prescribed addition of the wearer.
Dependencies are inferred from the claim text.