Lens element that inhibits myopia progression

Abstract

A lens element intended to be worn in front of a human eye, comprising: a refractive region having a refractive power based on a prescription for a human eye; and a plurality of refractive optical elements having optical functions different from the optical function of the refractive region, wherein the surface of the annular region having an additional optical refractive power relative to the refractive power at the reference point of the lens element, e.g., the optical center, and having an inner diameter of 8 mm and an outer diameter of 17 mm, the ratio of the surface of the annular region having an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, to the total surface of the annular region is 0.02 or more, e.g. 0.05 or more, e.g. 0.09 or more, and 0.5 or less, e.g. 0.3 or less.

Description

Technology Field

[0001] The present disclosure relates to a lens element, for example, a lens element for inhibiting myopia progression adjusted to fit a wearer, wherein the lens element provides a first optical function having a refractive power based on the wearer's prescription and comprises a plurality of optical elements (e.g., at least 20 optical elements), each of the plurality of optical elements provides one or more optical functions, at least one of which is different from the first optical function. Background Technology

[0002] Myopia is characterized by the fact that the eye focuses on distant objects in front of the retina. Myopia is generally corrected using concave lenses, while hyperopia is generally corrected using convex lenses.

[0003] It has been observed that for some individuals, particularly children, correction using conventional single-focus optical lenses results in inaccurate focusing when observing objects at close distances—that is, under near-field conditions. Due to this near-field focusing abnormality, even in myopic children whose distance vision has been corrected, the image of a nearby object is formed behind the retina, even in the fovea region.

[0004] These focal defects can affect the progression of myopia in these individuals. In most of these individuals, it can be observed that the myopic abnormality tends to increase over time.

[0005] Recent controlled clinical trials have provided evidence of the benefits of placing optical elements, such as microlenses or lenslets, in the peripheral field of vision to slow the progression of myopia. The purpose of these optical elements is to provide an optically blurred image on the wearer's retina, thereby triggering a signal to halt eye growth. More generally, the purpose of the optical elements is to provide a myopia control signal that slows down eye growth.

[0006] By not providing optical elements in the central area of ​​the lens element equipped with optical elements, a good and clear field of view is also made possible.

[0007] Recent studies have also shown that the progression of myopia can be slowed by using arrays of small dots to provide a weak diffusion effect to the peripheral field of vision. The basic principle of this solution is to reduce the contrast of ocular axial elongation signals in the peripheral field of vision.

[0008] In regions of lens elements containing optical elements (e.g., microlenses, diffusing lenslets, diffusing dots, or defocusing concentric rings), it can be seen that the pattern formed by the optical elements may alternately display two main regions: a "refractive region" used to correct the wearer's myopia and a "defocusing region" used to inhibit the progression of myopia.

[0009] New optical designs propose an array of contiguous lenslets covering lens elements without a wide "refractive region" where optical elements are absent, meaning that each optical element implements both a myopia prescription (Rx) correction function (or the generation of blur acceptable for the wearer's good vision) and a defocus signal function to inhibit myopia progression.

[0010] Various optical element designs have been created using single-focus spherical lenslets, aspherical lenslets, "bifocal" lenslets, Pi-Fresnel lenslets, or even continuous toruses, and the optical elements may or may not be adjacent to each other. The problem to be solved

[0011] While several proposed designs for inhibiting myopia progression appear to provide some degree of efficiency, there is a need to provide a much more efficient solution for inhibiting myopia progression. means of solving the problem

[0012] To this end, the present disclosure proposes a lens element intended to be worn in front of a person's eye, said lens element:

[0013] - A refractive region having refractive power based on a prescription for the above-mentioned human eye; and

[0014] - Multiple refractive optical elements having optical functions different from the optical functions of the above refractive region

[0015] Includes,

[0016] Over an annular zone centered on a reference point of the lens element, for example, the optical center, and having an inner diameter of 8 mm and an outer diameter of 17 mm, the ratio of the surface of the annular zone having an additional optical refractive power relative to the refractive power at the reference point of the lens element, for example, the optical center, and having an absolute value of 7.5 diopters or more, to the total surface of the annular zone is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less.

[0017] Advantageously, by providing an additional refractive power of 7.5 diopters or more across an annular region centered on the reference point of the lens, the efficiency of inhibiting myopia progression of the lens element is increased compared to conventional lenses that typically have an additional refractive power of about 3 to 4 diopters. By limiting the increase in additional optical refractive power to 50%, for example 30%, of the annular region area, good visual acuity can be maintained.

[0018] According to additional embodiments that may be considered alone or in combination:

[0019] - A ratio of the surface of the annular region, which has an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, across an annular region having an inner diameter of 8 mm and an outer diameter of 25 mm, to the total surface of the annular region, is 0.02 or more, e.g. 0.05 or more, e.g. 0.09 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0020] - A ratio of the surface of the annular region, having an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, across an annular region having an inner diameter of 8 mm and an outer diameter of 36 mm, to the total surface of the annular region, is 0.03 or more, e.g. 0.04 or more, e.g. 0.06 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0021] - A ratio of the surface of the annular region, having an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, centered over the entire annular region having an inner diameter of 17 mm and an outer diameter of 36 mm, to the total surface of the annular region, wherein the ratio is 0.02 or more, e.g. 0.03 or more, e.g. 0.05 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0022] - A ratio of the surface of the annular region, which has an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, centered over the entire annular region having an inner diameter of 25 mm and an outer diameter of 36 mm, to the total surface of the annular region, is 0.02 or more, e.g. 0.03 or more, e.g. 0.04 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0023] - The annular zone(s) comprise a plurality of sub-zones having an additional optical refractive power relative to the refractive power at the reference point of the lens, e.g., the optical center, and having an absolute value of 7.5 diopters or more, e.g., at least 30 sub-zones, e.g., at least 40 sub-zones, e.g., each sub-zone comprises a disk having a diameter of 0.3 mm; and / or

[0024] - At least 50% of the sub-zones, e.g., at least 80% of the sub-zones, e.g., at least 95% of the sub-zones, wherein the difference in average added optical refractive power between a central region with a diameter of 0.2 mm centered on the center of a 0.3 mm diameter disc included in the sub-zone and an annular region centered on the center of the 0.3 mm diameter disc having an inner diameter of 0.63 mm and an outer diameter of 0.73 mm is 2 diopters or more, e.g., 3 diopters or more, and 7 diopters or less, e.g., 6.5 diopters or less; and / or

[0025] - The center of the 0.3 mm diameter disc is spaced at least 0.8 mm from the centers of the 0.3 mm diameter discs of the other sub-regions;

[0026] - The sub-zones are not adjacent to each other; and / or

[0027] - Each sub-zone is located within a single optical element; and / or

[0028] - A ratio of the surface of the annular region, having an additional optical refractive power of 10 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, centered over the entire annular region having an inner diameter of 8 mm and an outer diameter of 17 mm, to the total surface of the annular region, wherein the ratio is 0.015 or more, e.g. 0.025 or more, e.g. 0.03 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0029] - A ratio of the surface of the annular region, which has an additional optical refractive power of 10 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, centered over the entire annular region having an inner diameter of 8 mm and an outer diameter of 25 mm, to the total surface of the annular region, is 0.015 or more, e.g. 0.02 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0030] - A ratio in which the surface of the annular region, having an additional optical refractive power of 10 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, e.g., the optical center, centered over the entire annular region having an inner diameter of 17 mm and an outer diameter of 25 mm, occupies the entire surface of the annular region, is 0.01 or more, e.g. 0.013 or more, and 0.5 or less, e.g. 0.3 or less; and / or

[0031] - The annular region(s) comprises a plurality of sub-regions having an additional optical refractive power of at least 10 diopters in absolute value relative to the refractive power at the reference point of the lens, e.g., the optical center, e.g., at least 30 sub-regions, e.g., at least 40 sub-regions, e.g., each sub-region comprises a disc having a diameter of 0.15 mm; and / or

[0032] - For each sub-zone, the center of a 0.15 mm diameter disc is spaced at least 1 mm from the center of a 0.3 mm diameter disc of other sub-zones, for example, the sub-zones are non-adjacent circular zones, for example, each sub-zone is located within a single optical element; and / or

[0033] - The annular zone(s) are 90 each o Four complementary quadrants with angle intervals of, for example, 60 eacho Six complementary quadrants with angle intervals of significance, e.g., 45 each o It includes eight complementary quadrants having angular intervals, wherein a surface ratio defined for the annular zone(s) is applied to each quadrant; and / or

[0034] - The lens element has a central region, said central region having, for example, a diameter of 5 mm or more and 8.5 mm or less, including a reference point of the lens element, not including an optical element, and providing a refractive power based on a prescription for the human eye; and / or

[0035] - Optical elements are positioned along a number of concentric rings; and / or

[0036] - Each concentric ring is composed of a plurality of adjacent optical elements; and / or

[0037] - At least 50%, e.g., at least 80%, e.g., 99% of the optical elements are refractive lenslets; and / or

[0038] - At least 50%, e.g., at least 80%, e.g., all optical elements are refractive toruses; and / or

[0039] - The concentric rings of the optical elements have an inner diameter included in the range of 9.0 mm to 60 mm, said inner diameter corresponds to the smallest circle tangent to at least one optical element of the said circle; and / or

[0040] - The optical elements correspond to a series of torus concentric rings; and / or

[0041] - Optical elements are located within a network, for example, a grating, honeycomb, or concentric ring; and / or

[0042] - At least 50%, e.g., at least 80%, e.g., at least 99% of the optical elements are refractive lenslets, e.g., lenslets with spherical optical functions, lenslets with aspherical optical functions, or "bifocal" lenslets; and / or

[0043] - At least 50%, e.g., at least 80%, e.g., at least 99% of the optical elements are diffusion lenslets or phi-Fresnel lenslets; and / or

[0044] - The concentric rings of the optical elements have an inner diameter included in the range of 9.0 mm to 60 mm, said inner diameter corresponds to the smallest circle tangent to at least one optical element of the said circle; and / or

[0045] - At least 50%, e.g. at least 80%, e.g. at least 99% of the optical elements are adjacent optical elements; and / or

[0046] - At least 50%, e.g., at least 80%, e.g., at least 99% of the optical elements are non-adjacent optical elements; and / or

[0047] - Each optical element has a contour shape that can be inscribed in a circle having a diameter of 0.1 mm or more, e.g., greater than 0.5 mm and less than or equal to 3.0 mm, e.g., less than or equal to 2.5 mm; and / or

[0048] - For all circular zones comprising a geometric center having a radius of 1 mm or more, e.g. 2 mm or more and 5 mm or less, e.g. 4 mm or less, and located at a distance of said radius +4 mm, e.g. +5 mm, e.g. +6 mm or more from a framing reference point facing the pupil of a user gazing straight ahead under standard wearing conditions, the ratio between the sum of the areas of the parts of optical elements located within said circular zone and the area of ​​said circular zone is 20% or more, e.g. 30% or more and 80% or less, e.g. 70% or less, e.g. 60% or less; and / or

[0049] - The lens element comprises a refractive region configured to provide a first refractive power based on the wearer's prescription to the wearer under standard wearing conditions, particularly with respect to the foveal field of vision; and / or the optical elements provide at least a second refractive power; and / or

[0050] - The refraction region includes a plurality of independent island-shaped regions; and / or

[0051] - The refractive region is formed by the region outside the optical elements, and each refractive island-shaped region is located within a single optical element; and / or

[0052] - The refractive region is formed as a region other than the regions formed by a plurality of optical elements; and / or

[0053] - The lens element comprises a refractive region configured to provide a first refractive power to the wearer under standard wearing conditions, particularly with respect to the foveal field of vision, and the optical elements provide at least a second refractive power, wherein the first refractive power and the at least second refractive power are based on the wearer's prescription; and / or

[0054] - The lens element comprises a refractive region configured to provide a first refractive power to the wearer under standard wearing conditions, particularly with respect to the foveal field of vision, and the optical elements provide at least a second refractive power, wherein the sum of the first refractive power and the at least second refractive power is based on the wearer's prescription; and / or

[0055] - Optical elements can provide multiple optical functions simultaneously; and / or

[0056] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements are diffusion lenslets; and / or

[0057] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements are multifocal lenslets; and / or

[0058] - At least part, e.g., the entire front and / or rear of the lens element is covered with a coating; and / or

[0059] - At least some, e.g., all, of the optical elements are located in front of the lens element; and / or

[0060] - At least some, e.g., all, of the optical elements are located on the rear of the lens element; and / or

[0061] - At least some, for example, all, of the optical elements are located between the front and rear of the lens element; and / or

[0062] - The optical elements have a contour shape that can be inscribed in a circle having a diameter of 0.6 mm or more, e.g. 0.8 mm or more, and 3.0 mm or less, e.g. 2.0 mm or less; and / or

[0063] - Optical elements are located on the mesh; and / or

[0064] - The mesh is a structured mesh; and / or

[0065] - Optical elements are positioned along a number of concentric rings; and / or

[0066] - The lens element further comprises at least four optical elements organized into at least two groups of adjacent optical elements; and / or

[0067] - Adjacent optical elements of each group are organized into at least two concentric rings having the same center, and the concentric rings of adjacent optical elements of each group are defined by an inner diameter corresponding to the smallest circle touching at least one optical element of said group and an outer diameter corresponding to the largest circle touching at least one optical element of said group; and / or

[0068] - At least some, for example, all, of the concentric rings of the optical elements are centered on a reference point on the surface of the lens element on which the optical elements are placed, for example, the optical center; and / or

[0069] - The concentric rings of the optical element have a diameter included in the range of 9.0 mm to 60 mm; and / or

[0070] - The distance between two consecutive concentric rings of optical elements is 0.5 mm or more, said distance between two consecutive concentric rings is defined as the difference between the outer diameter of the first concentric ring and the inner diameter of the second concentric ring, said second concentric ring is closer to the periphery of the lens element; and / or

[0071] - The optical element further comprises optical elements radially arranged between two concentric rings; and / or

[0072] - The structured mesh is a square mesh or a hexagonal mesh or a triangular mesh or an octagonal mesh; and / or

[0073] - The mesh structure is a random mesh, e.g., a Voronoi mesh; and / or

[0074] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements have a constant refractive power and have a discontinuous first derivative between two adjacent optical elements; and / or

[0075] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements have varying refractive powers and have continuous first-order derivatives between two adjacent optical elements; and / or

[0076] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements have optical functions that focus an image at a location other than the retina under standard wearing conditions; and / or

[0077] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements have aspherical focusing optics for standard wear conditions and peripheral vision; and / or

[0078] - At least 50%, e.g., at least 80%, e.g., at least 99%, e.g., all of the optical elements have cylindrical power; and / or

[0079] - Optical elements are configured such that the average spherical refractive power of the optical elements increases from a point on the section toward the periphery of the section along at least one section of the lens element, for example, along at least six equally spaced sections of the lens element, for example, along all sections, for example, along a section passing through a reference point of the lens element, for example, the optical center; and / or

[0080] - Optical elements are configured along at least one cross-section of a lens element, for example, along at least six equally spaced cross-sections, each cross-section passing through the center of six optical elements arranged in a regular manner around a reference point of the lens element; and / or

[0081] - Optical elements are configured such that, along at least one cross-section of a lens element, for example, along at least eight equally spaced cross-sections, for example, along all cross-sections, the circumferential refractive power (cylinder) of the optical elements increases from a point on said cross-section toward the periphery of said cross-section; and / or

[0082] - Optical elements are configured such that the average spherical refractive power and / or circumferential refractive power of the optical elements increases from the center of the cross section toward the periphery of the cross section along at least one cross section of the lens element, for example, along at least six equally spaced cross sections, for example, along all cross section(s); and / or

[0083] - The refractive region includes a reference point, e.g., an optical center, and the optical elements are configured such that the average spherical refractive power and / or circumferential refractive power of the optical elements increases from the reference point, e.g., the optical center, toward the periphery of the lens along at least one cross-section passing through the reference point of the lens, e.g., the optical center, e.g., along at least eight equally spaced cross-sections, e.g., along all cross-sections; and / or

[0084] - The refractive region comprises a far vision reference point, a near vision reference point, and a meridian connecting the far vision reference point and the near vision reference point, and the optical elements are configured such that, under standard wearing conditions, along at least one horizontal cross-section of the lens, for example, along at least eight equally spaced horizontal cross-sections, for example, along all horizontal cross-sections, the average spherical refractive power and / or circumferential refractive power of the optical elements increases from the intersection of the horizontal cross-section and the meridian toward the periphery of the lens; and / or

[0085] - The increasing functions of the average spherical and / or circumferential refractive power along the cross-sections differ depending on the position of the cross-section along the meridian; and / or

[0086] - The increasing functions of the average spherical and / or circumferential refractive power along the cross-sections are asymmetric; and / or

[0087] - Optical elements are configured such that at least one cross section is a horizontal cross section under standard wearing conditions; and / or

[0088] - The average spherical refractive power and / or circumferential refractive power of the optical elements increases from a first point of the cross section toward the periphery of the cross section and decreases from a second point of the cross section toward the periphery of the cross section, wherein the second point is closer to the periphery of the cross section than the first point; and / or

[0089] - The increasing function of the average spherical refractive power and / or circumferential refractive power along at least one cross section is a Gaussian function; and / or

[0090] - The function of increase in average spherical refractive power and / or circumferential refractive power along at least one cross section is a quadratic function; and / or

[0091] - Optical elements are configured such that the average focal point of the rays passing through each optical element is located at the same distance from the retina; and / or

[0092] - The refractive region is formed as a region other than the regions formed by a plurality of optical elements; and / or

[0093] - At least some, e.g., all, of the optical elements are located in front of the lens element; and / or

[0094] - At least one multifocal refractive lenslet includes astigmatic refractive power; and / or

[0095] - At least one, e.g., all multifocal refractive lenslets include an aspherical surface with or without rotational symmetry; and / or

[0096] - At least one of the optical elements, for example, all of them are toric refractive lenslets; and / or

[0097] - At least one multifocal refractive lenslet includes a toric surface; and / or

[0098] - At least some, for example, all, of the optical functions include higher-order optical aberrations. Effects of the invention

[0099] It is included in the contents of the present invention. Brief explanation of the drawing

[0100] Hereinafter, non-limiting embodiments of the present disclosure will be described with reference to the attached drawings. FIG. 1 shows a front view of a lens element according to a first embodiment of the present disclosure. FIGS. 2a and 2b show side views of a lens element according to various embodiments of the present disclosure. FIG. 3 shows a front view of a lens element according to a second embodiment of the present disclosure. FIGS. 4a and FIGS. 4b show front views of a lens element according to a third embodiment of the present disclosure. FIG. 5 shows a front view of a lens element according to an embodiment of the present disclosure. The elements shown in the drawings are illustrated for brevity and clarity and are not necessarily proportional to their actual size. For example, the dimensions of some elements in the drawings may be exaggerated compared to others to aid in understanding the various embodiments of the present disclosure. Specific details for implementing the invention

[0101] The present disclosure relates to a lens element intended to be worn by a user.

[0102] In the following description, terms such as <<Upper>>, <<Lower>>, <<Horizontal>>, <<Vertical>>, <<Up>>, <<Down>>, <<Front>>, and <<Rear>>, or other words indicating relative positions, may be used. It should be understood that these terms are based on the state of wearing the lens element.

[0103] In the context related to the present disclosure, the term “optical lens” may refer to an uncut optical lens, an optical lens for eyeglasses that is edge-cut to fit a specific eyeglass frame, an ophthalmic lens, and an optical device configured to be placed on an ophthalmic lens. In the context of the present disclosure, an “optical lens” may have a coating such as a stack of hard coatings and / or anti-reflective coatings.

[0104] As shown in FIGS. 1 to 4, an optical lens (L1, L2) according to the present disclosure

[0105] The optical elements (14) of the optical lens according to the present disclosure may have different shapes and / or optical functions, or a combination of such shapes and optical functions.

[0106] For example, the optical element may be a spherical lenslet, that is, a lens element having spherical optical capabilities. An example of a solution for inhibiting myopia progression using a spherical lenslet is disclosed in patent document US20170131567.

[0107] For example, the optical element may be an aspherical lenslet, that is, a lens element having an optical function that forms at least two focal points. For example, the aspherical lenslet may have a continuous, gradual change in refractive power over its entire surface.

[0108] For example, the optical element may be a "bifocal" lenslet containing a central portion within an annular portion. The annular portion provides additional refractive power, and the central portion provides refractive power based on the wearer's prescription. The refractive region comprises a plurality of independent island-shaped regions. Generally, the refractive region is formed by regions other than the optical elements, and each refractive island-shaped region is located within a single optical element. For example, the optical elements have an annular shape along the refractive region. An example of such a configuration is described in Patent Document WO2021198362.

[0109] According to one embodiment of the present disclosure, an optical element may be placed on a structural network, for example, a square or hexagonal network or a random network. Generally, a lens element may include a plurality of adjacent lenslets arranged on such a structural network, and an island-shaped refractive region exists within the structural network. Such a structure may be obtained by stamping on a single-focus lens. An example of such a configuration is described in Patent Document WO2019166657.

[0110] For example, the optical element is a pi-Fresnel lenslet. For example, one side of the lens element is completely covered by a plurality of adjacent Fresnel-type optical elements. The optical element may be a Fresnel-type optical element in which the phase function Ψ(r) has a π phase jump at the nominal wavelength λ0. For clarity, this structure may be referred to as a "pi-Fresnel lens," in contrast to a single-focus Fresnel lens in which the phase jump is a multiple of 2π. Examples of such a configuration are disclosed in patent documents WO2019206569 and WO2021001524.

[0111] For example, optical elements are composed of a set of torus concentric rings. An example of such a configuration is disclosed in Patent Document WO2019166657.

[0112] As shown in FIG. 2a, the optical lens comprises at least a first surface and a second surface facing the first surface. For example, the first surface may include an object-side surface (F1) formed as a convex curved surface toward the object side, and the second surface may include an eye-side surface (F2) formed as a concave surface having a curvature different from that of the object-side surface. The lens elements (L1, L2) may be made of an organic material, a thermosetting or thermoplastic material (e.g., polycarbonate), or an inorganic material (e.g., glass). The lens elements (L1, L2) may also consist of two layers of the aforementioned materials having different refractive indices. Regardless of whether the lens is made of one or more materials, the arrangement of the optical elements may be similar to the type in FIG. 1, FIG. 3, or FIG. 4.

[0113] Referring to FIG. 2b, the optical element (10) may include a thermoplastic layer (32) and a thermosetting layer (34). The optical element (14) may be formed within or on a first surface (36) of the thermoplastic layer (32). As in FIG. 2b, the first surface (36) of the thermoplastic layer (32) may be processed so that the optical element (14) thereon appears to be debossed within the first surface (36) of the thermoplastic layer (32). As can be understood from the drawings, the optical element (14) on the first surface (36) of the thermoplastic layer (32) may be hemispherical (spherical or aspherical), concave in shape, or protrude toward the object side of the lens element.

[0114] Advantageously, the front and / or rear of the lens element is smooth.

[0115] In connection with the present disclosure, the term “smooth” means a state in which the surface irregularity of a lens element is 0.5 μm or less, for example, 0.4 μm or less. The term “surface irregularity” means the difference between the maximum and minimum values ​​of the deviation distance from the most approximate sphere. The term “most approximate sphere” means a spherical shape calculated from the surface measurements (height distribution) using the most squares method.

[0116] In terms of average surface refractive power, the term "smooth" can be defined as follows. The term "smooth" refers to a surface condition in which the rate of change of average surface refractive power (unit: D) ​​at a specific location on the surface in a specific direction is 0.5 D / mm or less, for example, 0.4 D / mm or less.

[0117] The term "smooth" can also be defined as a state in which the difference between the minimum and maximum values ​​of the average surface refractive power is smaller than the difference between the minimum and maximum values ​​of the transmitted refractive power (refractive power added by segments of the additive optical function).

[0118] In one embodiment, the thermosetting layer (34) may generally be made of a crosslinked material (e.g., a thermosetting material). In particular, the thermosetting layer (34) may be obtained by polymerizing an allyl derivative, such as an allyl carbonate of a linear or branched aliphatic or aromatic polyol. The thermosetting layer (34) may further comprise diethylene glycol bis(allyl carbonate), isopropylene bisphenol-A bis(allyl carbonate), poly(meth)acrylate and copolymer-based substrates, polythio(meth)acrylate, thermosetting polyurethane, polythiourethane, polyepoxide, polyepisulfide, as well as copolymers thereof and mixtures thereof. In one embodiment, the thermosetting layer (34) is CR-39 from PPG Industries ® Orma, such as that obtained by (co)polymerizing the bis-allyl carbonate of commercially available diethylene glycol ® (Essilor) may be a substrate, etc. The thicknesses of layer (32) and layer (34) may be similar (500 μm to 1 mm thickness) or very different (for example, the thickness of one of the two layers may be less than 400 μm and the thickness of the other may be greater than 1 mm).

[0119] As illustrated in FIGS. 1 to 4, the lens elements (L1, L2) include a refractive region (12).

[0120] The refractive region (12) has a refractive power (Px) based on the wearer's ophthalmic prescription, for example, the prescription of a person who needs to have optical lenses fitted. The prescription is applied, for example, to correct abnormal refraction of the eye of the optical lens wearer.

[0121] The term "prescription" should be understood to mean a set of optical characteristics, including refractive power, astigmatism, and prism deviation, determined by an ophthalmologist or optometrist to correct visual defects of the eye, for example, through a lens placed in front of the eye. For example, a prescription for myopia includes a refractive power value with an axis for distance vision and an astigmatism value.

[0122] The prescription may include an indication that there are no abnormalities in the wearer's eyes and that no refractive power needs to be provided to the wearer. In such cases, the refractive area is configured not to provide any refractive power.

[0123] The refractive region is preferably formed as a region other than the regions formed by a plurality of optical elements. That is, the refractive region is a complementary region to the regions formed by a plurality of optical elements.

[0124] According to one embodiment of the present disclosure, the refractive region may include a plurality of independent island-shaped regions. For example, each refractive island-shaped region is located within a single optical element.

[0125] This arrangement of refractive regions is disclosed in patent document WO2021198362.

[0126] As shown in FIGS. 1, 3 and 4, the refractive region (12) may include at least the central zone of the optical lens (10).

[0127] The central zone may have characteristic dimensions exceeding 4 mm, e.g., 8 mm or more and less than 22 mm, e.g., less than 20 mm, e.g., 12 mm or less. For example, the central zone is a circular zone centered at a reference point of the lens element, e.g., the optical center, and has a diameter exceeding 4 mm, e.g., 8 mm or more and less than 22 mm, e.g., less than 20 mm, e.g., 12 mm or less.

[0128] The central area can be centered on a reference point of the optical lens (10). The reference point centered on the central area is any one of the geometric center and / or optical center and / or near reference point and / or far reference point of the optical lens.

[0129] Preferably, the central zone is centered on or at least includes a framing reference point facing the pupil of a wearer looking straight ahead under standard wearing conditions.

[0130] Wearing conditions should be understood as the position of the optical lens relative to the wearer's eyeball, and are defined, for example, by the pantoscopic angle, cornea-lens distance, pupil-cornea distance, center of rotation (CRE)-pupil distance, CRE-lens distance, and wrap angle.

[0131] The cornea-lens distance is the distance between the cornea and the back surface of the lens measured along the visual axis in the first eye position (typically considered to be the horizontal direction), and is, for example, 12 mm.

[0132] The pupil-cornea distance is the distance between the pupil and the cornea measured along the visual axis of the eyeball, and is typically 2 mm.

[0133] The CRE-pupillary distance is the distance between the center of rotation (CRE) of the eyeball and the cornea measured along the visual axis of the eyeball, and is, for example, 11.5 mm.

[0134] The CRE-lens distance is the distance between the CRE of the eyeball and the back of the lens measured along the visual axis in the first eye position (typically considered to be the horizontal direction), and is, for example, 25.5 mm.

[0135] The anterior angle is the angle between the normal to the rear surface of the lens and the visual axis of the eye in the first position (typically considered to be the horizontal direction), measured in the vertical plane at the point where the rear surface of the lens intersects the visual axis of the eye in the first position, for example, -8 o and, preferably 0 o am.

[0136] The facial angle is the angle between the normal to the rear surface of the lens and the visual axis of the eye in the first position (typically considered to be in the horizontal direction), measured in the horizontal plane at the point where the rear surface of the lens intersects the visual axis of the eye in the first position, for example, 0 o am.

[0137] As an example of standard wearing conditions, an anterior tilt angle of -8 o , cornea-lens distance 12 mm, pupil-cornea distance 2 mm, CRE-pupillary distance 11.5 mm, CRE-lens distance 25.5 mm, and facial angle 0 o can be defined.

[0138] As another example of standard wearing conditions more suitable for young wearers, an inclination angle of 0 o , cornea-lens distance 12 mm, pupil-cornea distance 2 mm, CRE-pupillary distance 11.5 mm, CRE-lens distance 25.5 mm, and facial angle 0 o can be defined.

[0139] The central area may include the optical center of the optical lens, and characteristic dimensions exceeding 4 mm (±8 on the retinal side) o Corresponding to peripheral angle) Less than 22 mm (±44 on the retinal side) o Corresponding to the peripheral angle), for example, less than 20 mm (±40 on the retinal side) oIt may correspond to the peripheral angle. The above characteristic dimension may be the diameter of the central region which is elliptical, or the major or minor axis.

[0140] The refractive region (12) may include a continuously changing refractive power. For example, the refractive region may have a progressive addition design. The optical design of the refractive region may include a fitting cross with a negative refractive power and a first region that extends toward the temporal side of the refractive region when the wearer wears the lens element. In the first region, the refractive power increases as it moves toward the temporal side, and at the nasal side of the lens, the refractive power of the ophthalmic lens is substantially the same as at the fitting cross. Such an optical design is disclosed in more detail in Patent Document WO2016 / 107919.

[0141] Alternatively, the refractive power in the refractive region (12) may include at least one discontinuity.

[0142] As shown in FIGS. 1 to 3, the optical lens (L1, L2) includes a plurality of optical elements (14) and a region of interest (20) including the plurality of optical elements (14).

[0143] At least 50%, for example, at least 80%, for example, all of the surface of the optical elements (L1, L2) is covered with at least one coating element layer. The at least one coating element layer may include properties selected from the group consisting of scratch resistance, anti-reflection, smudge resistance, dust resistance, UV30 filtering, blue light filtering, and wear resistance.

[0144] The coating element layer can be provided using any known technique. For example, the coating layer can be provided using a dipping process that simultaneously applies the coating layer to each surface of the optical lens.

[0145] The optical element has a transparent optical function that does not focus on the retina of the wearer's eye when the optical lens is worn under standard wearing conditions.

[0146] In other words, when a wearer wears the lens elements, for example, under standard wearing conditions, light rays passing through multiple optical elements do not focus on the retina of the wearer's eye. For example, the optical elements may focus in front of and / or behind the retina of the wearer's eye.

[0147] Advantageously, by not focusing an image on the wearer's retina, the lens element can generate a control signal that inhibits, reduces, or at least slows down the progression of refractive errors, such as myopia or hyperopia, in the wearer's eye.

[0148] In connection with the present disclosure, an optical element is considered to have a transparent optical function when it absorbs less than 50%, for example less than 20%, for example less than 5% of light over the visible light spectrum, i.e., from 380 nm to 750 nm.

[0149] The optical element may be in the form of a lenslet that provides additional refractive power relative to the refractive power based on the prescription for the human eye.

[0150] An example of such an optical element configuration is disclosed in Patent Document WO2019166659, incorporated by reference into this application.

[0151] As shown in FIG. 1, according to one embodiment of the present disclosure, optical elements are positioned along a plurality of concentric rings. Each ring may consist of adjacent optical elements. Advantageously, this configuration enables a suitable compromise between the myopia progression inhibition function of the optical elements and the visual acuity provided by the lens elements.

[0152] In other words, optical elements can be organized into groups of adjacent optical elements. Each group of adjacent optical elements can be organized into concentric rings having the same center, for example, at least five concentric rings, for example, eleven concentric rings. The concentric ring of each group of adjacent optical elements is defined by an inner diameter corresponding to the smallest circle touching at least one optical element of the group and an outer diameter corresponding to the largest circle touching at least one optical element of the group.

[0153] Generally, the outer diameter of the concentric ring of the optical element is in the range of 9.0 mm to 60 mm.

[0154] According to one embodiment of the present disclosure, the distance between two consecutive concentric rings of an optical element is 0.5 mm or more, for example, greater than 1 mm, and the distance between the two consecutive concentric rings is defined by the difference between the outer diameter of the first concentric ring and the inner diameter of the second concentric ring, and the second concentric ring is closer to the periphery of the lens element.

[0155] As shown in FIG. 3, according to one embodiment of the present disclosure, optical elements are positioned according to a structured mesh, and in the example of FIG. 3, such a mesh is a hexagonal mesh, which enables a suitable compromise between the myopia progression inhibition function of the optical elements and the visual acuity provided by the lens elements. Alternatively, the mesh may be a square mesh.

[0156] As shown in FIG. 3, at least 50%, for example, at least 80%, for example, at least 99% of the optical elements are non-adjacent optical elements. In relation to the present invention, if there is no path between reference points (e.g., centers) of two optical elements that does not pass through a region having refractive power, the two optical elements are considered non-adjacent.

[0157] As shown in FIGS. 4a and 4b, according to one embodiment of the present disclosure, the optical element has a ring shape defined by an inner diameter and an outer diameter.

[0158] According to this embodiment, the optical elements correspond to parts of purely cylindrical concentric rings. In this example, the optical element has a constant refractive power but a variable cylindrical axis.

[0159] For example, optical elements consist of a set of torus concentric rings.

[0160] Each optical element also has a geometric center. All optical elements are positioned so that their respective geometric centers lie in the same location, for example, on the optical center of the lens element. The width of the annular shape and the distance between two adjacent annular shapes affect the trade-off between the myopia progression inhibition function of the optical element and the visual acuity provided by the lens element.

[0161] As shown in FIG. 2, the lens element (10) according to the present disclosure includes an object-side surface (F1) formed as a convex curved surface toward the object side, for example, and an eye-side surface (F2) formed as a concave surface having a curvature different from that of the object-side surface (F1), for example.

[0162] At least some, for example, all, of the optical elements may be located on the front of the lens element.

[0163] At least some, for example, all, of the optical elements may be located on the rear of the lens element.

[0164] At least some, for example, all, of the optical elements may be located between the front and rear of the lens element. For example, as shown in FIG. 2b, the lens element may include zones of different refractive indices forming the optical elements. An example of such a configuration is provided in Patent Document WO2023104982A1.

[0165] At least one of the optical elements may have an optical function that focuses an image at a location other than the retina.

[0166] Preferably, at least 50%, for example, at least 80%, for example, at least 99%, for example, all of the optical elements included in the lens element may have an optical function that forms an image focus at a location other than the retina.

[0167] All optical elements can be configured so that the average focal point of the light rays passing through each optical element is located at the same distance from the wearer's retina.

[0168] The optical function of each optical element, particularly its dioptric function, can be optimized to form an image at a constant distance from the retina of the wearer's eye, for example, in the peripheral field of view. For this optimization, it is necessary to adjust the dioptric function of each optical element according to its position on the lens element.

[0169] The optical element may be configured such that the average additional refractive power of the optical elements changes monotonically along at least one cross section of the lens (e.g., along at least eight equally spaced cross sections), from a point on the cross section located less than 4.5 mm from the reference point of the lens toward the periphery of the cross section, to a point located at least 25 mm from the reference point of the lens element.

[0170] At least some of the optical elements, for example, at least 50%, for example, at least 80%, for example, at least 99%, for example, all, are multifocal lenslets. Advantageously, these multifocal lenslets may have a first refractive power corresponding to the prescription, and a second refractive power different from the first refractive power to focus light elsewhere than the wearer's retina.

[0171] According to an alternative example of the present disclosure, at least 50%, for example, at least 80%, for example, at least 99%, for example, all of the optical elements are diffracting lenslets, for example, adjacent diffracting lenslets.

[0172] In the context of the present disclosure, if a path connecting two optical elements exists under standard wearing conditions and at least one of the refractive powers measured along this path differs from the refractive power based on the wearer's prescription, the two optical elements are considered to be adjacent to each other. For example, this is for the purpose of correcting a refractive error of the wearer's eye.

[0173] According to one embodiment of the present disclosure, at least 50%, for example, at least 80%, for example, at least 99%, for example, all of the optical elements have discontinuities such as discontinuous surfaces (e.g., Fresnel surfaces) and / or have discontinuities including a discontinuous refractive index profile.

[0174] An example of a pie-Fresnel lenslet is disclosed in patent document WO2019206569.

[0175] According to one embodiment of the present disclosure, at least 50%, for example at least 80%, for example at least 99%, for example all of the optical elements are diffusion lenslets or scattering elements as disclosed in patent document WO2022074243.

[0176] As shown in FIGS. 1, 2 and 5, it is possible to identify an annular region (22) on a lens element according to the present disclosure, centered on a reference point of the lens element, for example, the optical center, having an inner diameter of 8 mm and an outer diameter of 17 mm. The ratio of the surface of the annular region, which has an additional refractive power relative to the refractive power at the reference point of the lens element, for example, the optical center, and is 7.5 diopters or more in absolute value, to the total surface of the annular region is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less.

[0177] In connection with the present disclosure, the absolute value of the refractive power is the non-negative value of the refractive power, regardless of its sign.

[0178] In connection with the present disclosure, additional refractive power to the refractive power at a reference point should be understood as refractive power exceeding the refractive power at the reference point or the refractive power near the reference point (e.g., average refractive power over an area of ​​diameter 2 mm centered on the reference point, e.g., diameter 1 mm, e.g., diameter 0.5 mm).

[0179] Refractive power can be determined using a two-dimensional representation of the local refractive power obtained using a commercially available lens mapper, such as the NIMO solution provided by Lambda-X, for example.

[0180] By having a large additional refractive power within the annular region (22), it is possible to provide a highly efficient optical element that inhibits myopia progression.

[0181] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 8 mm and an outer diameter of 25 mm, and throughout the annular region, the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, to the total surface of the annular region is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less.

[0182] Advantageously, by having an annular zone extending up to 25 mm from the reference point with a large additional refractive power within the second annular zone, it is possible to provide a much more efficient optical element for inhibiting myopia progression, especially when the wearer uses the lens element to view the side.

[0183] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 8 mm and an outer diameter of 36 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, to the total surface of the annular region is 0.03 or more, for example 0.04 or more, for example 0.06 or more, and 0.5 or less, for example 0.3 or less.

[0184] Advantageously, by having an annular zone extending up to 36 mm from the reference point with a large additional refractive power within the second annular zone, it is possible to provide a much more efficient optical element for inhibiting myopia progression, especially when the wearer uses the lens element to view the side.

[0185] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 17 mm and an outer diameter of 36 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, to the total surface of the annular region is 0.02 or more, for example 0.03 or more, for example 0.05 or more, and 0.5 or less, for example 0.3 or less.

[0186] Advantageously, by having a fourth annular zone extending from a reference point to 17 mm to a maximum of 36 mm with a large additional refractive power within the second annular zone, it is possible to provide an optical element that inhibits myopia progression much more efficiently, especially for peripheral vision.

[0187] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 25 mm and an outer diameter of 36 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, to the total surface of the annular region is 0.02 or more, for example 0.03 or more, for example 0.04 or more, and 0.5 or less, for example 0.3 or less.

[0188] Advantageously, by having a fourth annular zone extending from a reference point to a maximum of 36 mm while having a large additional refractive power within the second annular zone, it is possible to provide an optical element that inhibits myopia progression much more efficiently, especially for peripheral vision.

[0189] According to one embodiment of the present disclosure, the annular region(s) comprises a plurality of sub-regions, for example, at least 30 sub-regions, for example, at least 40 sub-regions, having an additional optical refractive power relative to the refractive power at the reference point of the lens, for example, the optical center, and having an absolute value of 7.5 diopters or more, for example, each sub-region comprises a disc having a diameter of 0.3 mm.

[0190] Advantageously, the configuration of these sub-zones ensures an increase in the effect of inhibiting myopia progression by ensuring that parts of the lens elements providing an additional refractive power of 7.5 diopters or more are distributed throughout the annular zone.

[0191] In addition, by having at least 30 sub-zones, the effect of controlling myopia progression is further increased.

[0192] According to one embodiment of the present disclosure, at least 50% of the sub-zones, for example, at least 80% of the sub-zones, for example, at least 95% of the sub-zones, have an average additional refractive power difference between the central region and the peripheral region of 2 diopters or more, for example, 3 diopters or more, and 7 diopters or less, for example, 6.5 diopters or less.

[0193] The average additional refractive power in the central region is determined, for each sub-region, as the average additional refractive power across a 0.2 mm diameter disc centered on the center of a 0.3 mm diameter disc included in the sub-region.

[0194] The average additional refractive power in the surrounding area is determined, for each sub-zone, as the average additional refractive power across an annular zone centered on the center of the 0.3 mm diameter disc, having an inner diameter of 0.63 mm and an outer diameter of 0.73 mm.

[0195] According to one embodiment of the present disclosure, in each sub-region, the center of a 0.3 mm diameter disc is spaced at least 0.8 mm apart from the center of a 0.3 mm diameter disc of other sub-regions.

[0196] Advantageously, the distance between these sub-zones enables an appropriate compromise between the myopia progression inhibition function and the visual accommodation function of the lens element. In other words, the lens element provides good visual acuity and an effect of inhibiting myopia progression.

[0197] According to one embodiment of the present disclosure, the sub-regions are not adjacent to each other. For example, each sub-region is located within a single optical element.

[0198] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 8 mm and an outer diameter of 17 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 10 diopters or more, to the total surface of the annular region is 0.015 or more, for example 0.025 or more, for example 0.03 or more, and 0.5 or less, for example 0.3 or less.

[0199] Advantageously, by having a large additional refractive power of more than 10 diopters within the annular region (22), it is possible to provide a highly efficient optical element for inhibiting myopia progression.

[0200] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 8 mm and an outer diameter of 25 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 10 diopters or more, to the total surface of the annular region is 0.015 or more, for example 0.02 or more, and 0.5 or less, for example 0.3 or less.

[0201] Advantageously, by having an annular zone extending up to 25 mm from the reference point with a large additional refractive power within the second annular zone, it is possible to provide a much more efficient optical element for inhibiting myopia progression, especially when the wearer uses the lens element to view the side.

[0202] According to one embodiment of the present disclosure, it is possible to identify an annular region centered on a reference point of a lens element, for example, an optical center, having an inner diameter of 17 mm and an outer diameter of 25 mm, and the ratio of the surface of the annular region having an additional refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 10 diopters or more, to the total surface of the annular region is 0.01 or more, for example 0.013 or more, and 0.5 or less, for example 0.3 or less.

[0203] Advantageously, by having a fourth annular zone extending from a reference point to 17 mm to a maximum of 25 mm with a large additional refractive power within the second annular zone, it is possible to provide an optical element that inhibits myopia progression much more efficiently, especially for peripheral vision.

[0204] According to one embodiment of the present disclosure, the annular region(s) comprises a plurality of sub-regions, for example, at least 30 sub-regions, for example, at least 40 sub-regions, having an additional optical refractive power relative to the refractive power at a reference point of the lens, for example, the optical center, and having an absolute value of 10 diopters or more, for example, each sub-region comprises a disc having a diameter of 0.15 mm.

[0205] Advantageously, the configuration of these sub-zones ensures an increase in the effect of inhibiting myopia progression by ensuring that parts of the lens element providing an additional refractive power of 10 diopters or more are distributed throughout the annular zone.

[0206] In addition, by having at least 30 sub-zones, the effect of controlling myopia progression is further increased.

[0207] According to one embodiment of the present disclosure, in each sub-region, the center of a 0.15 mm diameter disc is spaced at least 1 mm apart from the center of a 0.3 mm diameter disc in other sub-regions.

[0208] Advantageously, the distance between these sub-zones enables an appropriate compromise between the myopia progression inhibition function and the visual accommodation function of the lens element. In other words, the lens element provides good visual acuity and an effect of inhibiting myopia progression.

[0209] According to one embodiment of the present disclosure, the sub-regions are not adjacent to each other. For example, each sub-region is located within a single optical element.

[0210] According to one embodiment of the present disclosure shown in FIG. 5, any annular region(s) are each 90 o Four complementary quadrants (Q1, Q2, Q3, Q4) with angle intervals of , e.g., 60 each o Six complementary quadrants with angle intervals of significance, e.g., 45 each oIt may include 8 complementary quadrants with angle intervals, and a surface ratio defined for the annular region(s) is applied to each quadrant.

[0211] In particular, the ratio of the surface of the annular region having an additional refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, for example, the optical center, in each quadrant to the total surface of the annular region is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less.

[0212] The different annular zones and ratios defined in the aforementioned description can be applied equally to each quadrant.

[0213] Advantageously, by having the same surface ratio condition for each quadrant, the additional refractive power can be distributed more homogeneously. Therefore, the myopia progression inhibition effect of the lens element is the same regardless of which part of the lens element the wearer looks through.

[0214] The additional refractive power distribution defined by the annular zone is applied to all myopia progression inhibition lenses, and in particular to the lens element configurations shown in FIGS. 1 to 4.

[0215] The present disclosure has been described through embodiments without limiting the general concept of the invention. While many additional modifications and variations will be apparent to those skilled in the art by referring to the exemplary embodiments described above, these embodiments are provided merely as examples and are not intended to limit the scope of the present disclosure, and the scope of the present disclosure is determined only by the appended claims.

[0216] In the claims, the word “comprising” does not exclude other elements or steps, and “one” or “one” does not exclude multiple. The mere fact that various features are cited in different dependent claims does not imply that a combination of these features cannot be used advantageously. No reference numerals included in the claims should be construed as limiting the scope of the disclosure.

Claims

Claim 1 A lens element intended to be worn in front of a human eye, comprising: a refractive region having a refractive power based on a prescription for said human eye; and a plurality of refractive optical elements having optical functions different from the optical function of said refractive region, wherein the ratio of the surface of the annular region having an additional optical refractive power relative to the refractive power at the reference point of said lens element, for example, the optical center, and having an inner diameter of 8 mm and an outer diameter of 17 mm across the entire surface of said annular region is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less. Claim 2 A lens element according to claim 1, wherein the ratio of the surface of the annular region having an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, for example, the optical center, across the entire annular region having an inner diameter of 8 mm and an outer diameter of 25 mm, is 0.02 or more, for example 0.05 or more, for example 0.09 or more, and 0.5 or less, for example 0.3 or less. Claim 3 A lens element according to claim 1 or 2, wherein the ratio of the surface of the annular region having an additional optical refractive power of 7.5 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, for example, the optical center, across the entire annular region having an inner diameter of 8 mm and an outer diameter of 36 mm, is 0.03 or more, for example 0.04 or more, for example 0.06 or more, and 0.5 or less, for example 0.3 or less. Claim 4 A lens element according to any one of claims 1 to 3, wherein, over an annular region having an inner diameter of 17 mm and an outer diameter of 36 mm and centered on a reference point of the lens element, for example, an optical center, the ratio of the surface of the annular region having an additional optical refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, is 0.02 or more, for example 0.03 or more, for example 0.05 or more, and 0.5 or less, for example 0.3 or less. Claim 5 A lens element according to any one of claims 1 to 4, wherein, over an annular region having an inner diameter of 25 mm and an outer diameter of 36 mm and centered on a reference point of the lens element, for example, an optical center, the ratio of the surface of the annular region having an additional optical refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 7.5 diopters or more, is 0.02 or more, for example 0.03 or more, for example 0.04 or more, and 0.5 or less, for example 0.3 or less. Claim 6 A lens element according to any one of claims 1 to 5, wherein the annular zone(s) comprise a plurality of sub-zones, for example, at least 30 sub-zones, for example, at least 40 sub-zones, having an additional optical refractive power relative to the refractive power at a reference point of the lens, for example, the optical center, and having an absolute value of 7.5 diopters or more. For example, each sub-zone comprises a disk having a diameter of 0.3 mm. Claim 7 In claim 6, for each sub-region, the center of a 0.3 mm diameter disc is a lens element spaced at least 0.8 mm apart from the center of the 0.3 mm diameter discs of the other sub-regions. Claim 8 A lens element according to claim 6 or 7, wherein at least 50% of the sub-regions, for example, at least 80% of the sub-regions, for example, at least 95% of the sub-regions, have a difference in average added optical refractive power between a central region with a diameter of 0.2 mm centered on the center of a 0.3 mm diameter disc included in the sub-regions, and an annular region having an inner diameter of 0.63 mm and an outer diameter of 0.73 mm centered on the center of the 0.3 mm diameter disc, and is 2 diopters or more, for example, 3 diopters or more, and 7 diopters or less, for example, 6.5 diopters or less. Claim 9 A lens element according to any one of claims 1 to 8, wherein, over an annular region having an inner diameter of 8 mm and an outer diameter of 17 mm centered on a reference point of the lens element, for example, an optical center, the ratio of the surface of the annular region having an additional optical refractive power relative to the refractive power at the reference point of the lens element, for example, an optical center, and having an absolute value of 10 diopters or more, is 0.015 or more, for example 0.025 or more, for example 0.03 or more, and 0.5 or less, for example 0.3 or less. Claim 10 A lens element according to any one of claims 1 to 9, wherein the ratio of the surface of the annular region having an additional optical refractive power of 10 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, for example, the optical center, across the entire annular region having an inner diameter of 8 mm and an outer diameter of 25 mm, is 0.015 or more, for example 0.02 or more, and 0.5 or less, for example 0.3 or less. Claim 11 A lens element according to any one of claims 1 to 10, wherein the ratio of the surface of the annular region having an additional optical refractive power of 10 diopters or more in absolute value relative to the refractive power at the reference point of the lens element, for example, the optical center, across the entire annular region having an inner diameter of 17 mm and an outer diameter of 25 mm, is 0.01 or more, for example 0.013 or more, and 0.5 or less, for example 0.3 or less. Claim 12 A lens element according to any one of claims 1 to 11, wherein the annular region(s) comprises a plurality of sub-regions having an additional optical refractive power relative to the refractive power at a reference point of the lens, e.g., the optical center, and having an absolute value of 10 diopters or more, e.g., at least 30 sub-regions, e.g., at least 40 sub-regions, and e.g., each sub-region comprises a disc having a diameter of 0.15 mm. Claim 13 In paragraph 12, for each sub-region, the center of the 0.15 mm diameter disc is a lens element spaced at least 1 mm apart from the center of the 0.3 mm diameter discs of the other sub-regions. Claim 14 In any one of paragraphs 1 through 13, the annular zone(s) are each 90 o Four complementary quadrants with angle intervals of, for example, 60 each o Six complementary quadrants with angle intervals of significance, e.g., 45 each o A lens element comprising 8 complementary quadrants having angular intervals, wherein a surface ratio defined for the annular region(s) is applied to each quadrant. Claim 15 A lens element according to any one of claims 1 to 14, wherein the lens element has a central region, said central region having, for example, a diameter of 5 mm or more and 8.5 mm or less, includes a reference point of the lens element, does not include an optical element, and provides a refractive power based on a prescription for a human eye.

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