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US 11,079,612 B2Granted
Lens element
AssigneeEssilor International
InventorsMatthieu Guillot, Bruno Fermigier, Marius Peloux, Björn Drobe
Life of this patent
Estimating the term…
Abstract
A lens element intended to be worn in front of an eye of a person that includes a refraction area having a refractive power based on a prescription for the eye of the person, and a plurality of at least three non-contiguous optical elements, at least one optical element having a non-spherical optical function.
Claims13
A lens element for wearing in front of an eye of a person, the lens element comprising:
- a refraction area having a refractive power based on a prescription corresponding to said eye of the person;
- and
- at least three non-contiguous optical elements, at least one optical element of the at least three non-contiguous optical elements having a non-spherical optical function,
- wherein the at least three optical elements are configured so that along at least one section of the lens element, a mean sphere of the at least three optical elements increases from a first point of the at least one section towards a peripheral part of the at least one section by at least 0.5 D, and decreases from a second point of the at least one section towards the peripheral part of the at least one section by at least 0.5 D, the second point being closer to the peripheral part of the at least one section than the first point,
- wherein at least one optical element of the at least three non-contiguous optical elements is a multifocal refractive micro-lens, and
- wherein the multifocal refractive micro-lens includes an aspherical progressive surface.
3 more elements
A lens element for wearing in front of an eye of a person, the lens element comprising:
- a refraction area having a refractive power based on a prescription corresponding to said eye of the person;
- and
- at least three non-contiguous optical elements, at least one optical element of the at least three non-contiguous optical elements having a non-spherical optical function,
- wherein the at least three optical elements are configured so that along at least one section of the lens element, a mean sphere of the at least three optical elements increases from a first point of the at least one section towards a peripheral part of the at least one section by at least 0.5 D, and decreases from a second point of the at least one section towards the peripheral part of the at least one section by at least 0.5 D, the second point being closer to the peripheral part of the at least one section than the first point,
- wherein at least one optical element of the at least three non-contiguous optical elements is a diffractive lens, and
- wherein the diffractive lens includes a metasurface structure.
3 more elements
Dependencies are inferred from the claim text.