Method for manufacturing a lens element adapted for correcting an abnormal refraction of an eye of a wearer
AssigneeEssilor International
InventorEric Gacoin
Life of this patent
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Abstract
Disclosed is a method for manufacturing a lens element intended to be worn in front of an eye of a person, the lens element including two opposite optical faces and a plurality of optical elements each having an optical function of not focusing an image on the retina of the eye of the person so as to slow down the progression of the abnormal refraction of the eye. The method includes: providing a lens blank having at least one unfinished face; and processing the at least one unfinished face to obtain in combination with the opposed optical face a refractive power based on the prescription for the eye of the person and at least a part of the plurality of the optical elements.
Claims20
A method for manufacturing a lens element configured to be worn in front of an eye of a person, the lens element including two opposite optical faces and a plurality of optical elements each having an optical function of not focusing an image on the retina of the eye of the person to slow down the progression of the abnormal refraction of the eye, the method comprising:
- providing a lens blank having at least one unfinished face;
- processing at least a part of the plurality of the optical elements having the optical function and the at least one unfinished face to obtain in combination with the opposed optical face a refractive power based on the prescription for said eye of the person,
- wherein the optical function is light refraction, and
- wherein a part of the at least one unfinished face that provides the refractive power and at least the part of the plurality of the optical elements are realized in a same manufacturing operation.
A lens element configured to be worn in front of an eye of a person, the lens element comprising:
- two opposite optical faces;
- and
- a plurality of optical elements having an optical function of not focusing an image on the retina of the eye of the person to slow down the progression of the abnormal refraction of the eye,
- wherein at least a part of the plurality of the optical elements are disposed on one of the optical face that in combination with the opposed optical face provides a refractive power based on a prescription for said eye of the person,
- wherein the optical function is light refraction, and
- wherein a part of the at least one unfinished face that provides the refractive power and at least the part of the plurality of the optical elements are realized in a same manufacturing operation.
Dependencies are inferred from the claim text.