optical lenses

Abstract

An optical lens intended to be worn in front of an eye of a wearer having at least one prescription refractive power Px, the optical lens comprising two opposite optical surfaces and a plurality of continuous optical elements, at least some of the optical elements having an optical function of not focusing an image on the retina of the wearer's eye in order to slow the progression of ametropia in the eye, wherein: - the modulation transfer function of the optical lens is greater than 0.1 between 0 and 20 eyes / degrees, measurable along at least one direction in a plane corresponding to the at least one prescription refractive power, over a pupil having a diameter of at least 4 mm; - a majority of the light rays passing through the optical lens over the pupil pass through at least one optical element of the plurality of optical elements, and - each of the continuous optical elements verifies d=, wherein d is a characteristic dimension of the outer shape of the optical element in mm, IP is the absolute value of the characteristic optical power of the optical element expressed in diopters, and K is a number greater than or equal to 0.9 and less than or equal to 1.7.

Description

Technical Field

[0001] The present disclosure relates to an optical lens intended to be worn in front of a wearer's eye having at least one prescription refractive power Px, the optical lens comprising two opposing optical faces and a plurality of continuous optical elements.

[0002] The present disclosure further relates to a mold for a lens element that is intended to be worn in front of a person's eye. Background Art

[0003] Myopia of the eye is characterized by the eye focusing distant objects in front of its retina. Myopia is usually corrected using concave lenses, and hyperopia is usually corrected using convex lenses.

[0004] It has been observed that some individuals, particularly children, have inaccurate focusing when viewing objects at a close distance (i.e., under near vision conditions) when using conventional single vision lens correction. Because of this focusing defect on the part of myopic children who are corrected for distance vision, images of nearby objects are formed behind their retinas (even in the fovea).

[0005] This focusing defect may have an impact on the progression of myopia in such individuals. It can be observed that for most of these individuals, the myopia defect tends to worsen over time.

[0006] Foveal vision corresponds to the observation condition in which the image of the viewed object is formed by the eye in a central area of ​​the retina known as the fovea.

[0007] Peripheral vision corresponds to the perception of elements of the scene that are laterally offset with respect to the objects viewed, the images of which elements are formed on the peripheral part of the retina, away from the fovea.

[0008] The ophthalmic correction provided to a subject with refractive error is typically tailored to their foveal vision. However, it is well known that peripheral vision must be corrected less than the correction determined for foveal vision. In particular, studies in monkeys have shown that significant defocus behind the retina, occurring away from the fovea, can lead to elongation of the eye and, therefore, to an increase in myopic defects.

[0009] Therefore, there seems to be a need for a lens element that is able to inhibit or at least slow down the progression of refractive errors of the eye, such as myopia or hyperopia. Summary of the Invention

[0010] To this end, the present disclosure proposes an optical lens intended to be worn in front of an eye of a wearer having at least one prescribed refractive power Px, said optical lens comprising two opposite optical faces and a plurality of continuous optical elements, at least some of said optical elements having an optical function of not focusing an image on the retina of the eye of said wearer in order to slow down the progression of ametropia of said eye, wherein:

[0011] - a modulation transfer function of the optical lens, measurable along at least one direction in a plane corresponding to said at least one prescribed optical power, greater than 0.1 between 0 and 20 cycles / degree, over a pupil having a diameter of at least 4 mm;

[0012] - a majority of the light rays passing through the optical lens on the pupil pass through at least one optical element of the plurality of optical elements, and

[0013] - Each of the continuous optical elements is verified in

[0014] d is the characteristic dimension of the outer shape of the optical element in mm,

[0015] |P| is the absolute value of the characteristic optical power of the optical element expressed in diopters, and

[0016] K is a number greater than or equal to 0.9 and less than or equal to 1.7.

[0017] Advantageously, an optical element having a specific relationship between its size and optical power verified allows for having a continuous optical element covering a large portion of the surface of an optical lens while providing the prescribed optical power to the wearer when the optical lens is worn.

[0018] Advantageously, optical lenses according to the present disclosure allow for the use of continuous optical elements to slow the progression of refractive errors in the eye while providing the prescribed refractive power to the wearer.

[0019] According to further embodiments which may be considered individually or in combination:

[0020] - on the pupil, the optical lens generates a first optical path difference OPD1, the best spherical fit optical lens generates a second optical path difference OPD2, and a differential optical path diagram DOP is formed as the difference between the first optical path difference OPD1 and the second optical path difference OPD2, and the differential optical path DOP is different from zero; and / or

[0021] - the optical element is continuous over the pupil when the portion of the differential optical path DOP within the range [lowest level of DOP, lowest level of DOP + 10% of amplitude] represents less than 30%, such as at least 20%, such as at least 10%, such as at least 5% of the differential optical path (DOP) over the pupil, wherein the amplitude is the maximum level of the differential optical path (DOP) over the pupil; and / or

[0022] - the characteristic dimension of each optical element corresponds to the maximum diameter of an inscribed circle in the outline diagram defined by the level of said differential optical path (DOP), said level being constant within said pupil and within said range [lowest level of DOP, lowest level of DOP + 10% of amplitude], wherein said secondary value is the maximum level of said differential optical path (DOP) over said pupil; and / or

[0023] - at least a portion, for example all, of said optical elements have a characteristic optical power less than or equal to 20D, for example less than or equal to 10D, for example less than or equal to 6D; and / or

[0024] - the pupil having a diameter of 5 mm comprises a reference point of the optical lens, such as a fitting cross or an optical center; and / or

[0025] - the optical elements are positioned on a structured mesh, the structured mesh being a square mesh, a hexagonal mesh, a triangular mesh, an octagonal mesh or a random mesh; and / or

[0026] - at least one, for example all, of the optical elements have the optical function of focusing an image on a position outside the retina under standard wearing conditions; and / or

[0027] - at least 50%, for example all, of the optical elements have an optical axis, and the optical axes of the optical elements intersect at a single point; and / or

[0028] - at least 50%, for example all, of said optical elements have at least one focal point, and at least one focal point of each of said optical elements coincides; and / or

[0029] - at least 50%, for example all, of said optical elements are configured to focus an image on a common location; and / or

[0030] - at least one, for example all, of said optical elements have the optical function of not focusing the image under standard wearing conditions; and / or

[0031] - at least 50%, for example at least 80%, of the light rays passing through the optical lens on the pupil pass through at least one optical element of the plurality of optical elements; and / or

[0032] - at least a portion, for example all, of said optical elements are located on the front surface of said optical lens; and / or

[0033] - at least a portion, for example all, of said optical elements are located on the rear surface of said optical lens; and / or

[0034] - at least a portion, for example all, of the optical elements are located between the front and back surfaces of the optical lens; and / or

[0035] - at least a portion, for example all, of said optical elements have a ring-shaped shape, for example surrounding a refractive area; and / or

[0036] - the optical element has an outer shape that can be inscribed in a circle with a diameter greater than or equal to 0.2 mm, for example greater than or equal to 0.4 mm, for example greater than or equal to 0.6 mm and less than or equal to 2.0 mm, for example less than 1.0 mm; and / or

[0037] - the optical elements are positioned along a plurality of concentric rings; and / or

[0038] - said optical element is positioned on a structured web; and / or

[0039] - the mesh structure is a random mesh, such as a Voronoi mesh; and / or

[0040] - the optical elements are configured so that the mean focus of the light rays passing through each optical element is at the same distance from the retina, with a tolerance less than or equal to 2 mm, preferably less than or equal to 1 mm); and / or

[0041] - at least one, for example all, of said optical elements have an aspherical optical function under standard wearing conditions; and / or

[0042] - at least one, for example all, of the optical elements have a cylindrical power, and / or

[0043] - at least some, for example all, of said optical elements have a constant optical power and a discontinuous first derivative between two consecutive optical elements; and / or

[0044] - at least some, for example all, of said optical elements have a varying optical power and a change in the sign of the power between two consecutive optical elements; and / or

[0045] - the optical element is configured such that, along at least one segment of the lens, the average sphere of the optical element varies from a certain point of the segment towards a peripheral portion of the segment; and / or

[0046] - the optical element is configured such that, along at least one segment of the lens, the cylinder of the optical element varies from a certain point of the segment towards a peripheral portion of the segment; and / or

[0047] - the optical element is configured such that, along at least one segment of the lens, the average sphere and / or cylinder of the optical element varies from the center of the segment towards the peripheral portion of the segment, e.g. increases and then decreases, e.g. decreases, e.g. increases; and / or

[0048] - the optical lens comprises a refractive zone without optical elements and having a power corresponding to the prescribed optical power Px; and / or

[0049] - said optical lens is completely covered with optical elements and has, along at least one direction, in the plane corresponding to said at least one prescription power, a modulation transfer function value at 20 cy / degree greater in a central zone than in a peripheral zone of said lens; and / or

[0050] - the refractive area is formed as an area other than the area formed as the plurality of optical elements; and / or

[0051] - the refractive zone comprises an optical center, and the optical element is configured such that along any segment passing through the optical center of the lens, the average sphere and / or cylinder of the optical element varies from the optical center towards the peripheral portion of the lens, e.g. increases and then decreases, e.g. decreases, e.g. increases; and / or

[0052] - the refractive zone comprises a distance reference point, a near reference point, and a meridian connecting the distance reference point and the near reference point, the optical element being configured so that, under standard wearing conditions, along any horizontal segment of the lens, the average sphere and / or cylinder of the optical element varies from the intersection of the horizontal segment and the meridian towards the peripheral portion of the lens, e.g., increases and then decreases, e.g., decreases, e.g., increases; and / or

[0053] - the average spherical and / or cylindrical gain function along the segment differs depending on the position of the segment along the meridian; and / or

[0054] - the average spherical and / or cylindrical gain function along said segment is asymmetric; and / or

[0055] - the optical element is configured such that, in standard wearing conditions, the at least one segment is a horizontal segment; and / or

[0056] - the average spherical and / or cylindrical aspect of the optical element varies, e.g. increases, from a first point of the segment towards a peripheral portion of the segment, and varies, e.g. decreases, from a second point of the segment towards the peripheral portion of the segment, the second point being closer to the peripheral portion of the segment than the first point; and / or

[0057] - the average spherical and / or cylindrical gain function along the at least one segment is a Gaussian function; and / or

[0058] - the average spherical and / or cylindrical gain function along the at least one segment is a quadratic function; and / or

[0059] - the average spherical angle of at least some, for example all, of the optical elements varies eccentrically within the optical elements, for example increases or decreases; and / or

[0060] - the optical elements are organized into at least two groups of consecutive optical elements; and / or

[0061] - each group of consecutive optical elements is organized into at least two concentric rings having the same center, the concentric rings of each group of consecutive optical elements being defined by an inner diameter corresponding to the smallest circle tangential to at least one optical element of the group and an outer diameter corresponding to the largest circle tangential to at least one optical element of the group;

[0062] - at least a part, for example all, of said concentric rings of optical elements are centred on the optical centre of the surface of said lens element on which said optical elements are provided; and / or

[0063] - the diameter of the concentric rings of the optical element is between 9.0 mm and 60 mm; and / or

[0064] - the optical element further comprises an optical element positioned radially between two concentric rings; and / or

[0065] - at least one of the optical elements is a multifocal refractive microlens; and / or

[0066] - said at least one multifocal refractive microlens comprises cylindrical power; and / or

[0067] - said at least one multifocal refractive microlens comprises an aspherical surface, with or without any rotational symmetry; and / or

[0068] - at least one of the optical elements is a toric refractive microlens; and / or

[0069] - said at least one multifocal refractive microlens comprises a toric surface.

[0070] The present disclosure further relates to a molding element suitable for molding an optical lens according to the present disclosure.

[0071] For example, the present disclosure relates to a molding element for a lens element comprising a plurality of continuous optical elements, the molding element comprising a main surface having a curvature and comprising a plurality of continuous surface elements, each surface element having a curvature different from the curvature of the main surface,

[0072] Among them, on a disc with a diameter of at least 4 mm:

[0073] - said continuous surface element covers a majority of said major surface, and

[0074] - Each of said continuous surface elements verifies in

[0075] d is the characteristic dimension of the outer shape of the surface element in mm,

[0076] |C| is the absolute value of the characteristic curvature of said surface element expressed in diopters, and

[0077] L is a number greater than or equal to 1 and less than or equal to 7.6. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Non-limiting embodiments of the present disclosure will now be described with reference to the accompanying drawings, in which:

[0079] ○ Figure 1 is a general outline view of an optical lens according to an embodiment of the present disclosure;

[0080] ○ Figure 2 is a plan view of an optical lens according to an embodiment of the present disclosure;

[0081] ○ Figures 3a to 3c shows examples of the positions of optical elements according to the present disclosure;

[0082] ○ Figure 4 The astigmatism axis γ of the lens in the TAB○ convention is shown;

[0083] ○ Figure 5 Shows the cylindrical axis γ in the convention used to characterize aspheric surfaces AX ;

[0084] ○ Figure 6 and Figure 7 A schematic diagram of the optical system of the eye and lens; and

[0085] ○ Figure 8 An exploded view of a mold for a lens element according to an embodiment of the present disclosure is shown.

[0086] The elements in the figures are shown for simplicity and clarity only and are not necessarily drawn to scale. For example, the sizes of some elements in the figures may be exaggerated relative to other elements to help improve understanding of the embodiments of the present disclosure. DETAILED DESCRIPTION

[0087] The present disclosure relates to an optical lens intended to be worn in front of a wearer's eye.

[0088] In this specification, terms such as "upper", "bottom", "horizontal", "vertical", "above", "below", "front", "back", etc., or other words indicating relative positions may be used. These terms are to be understood in the wearing condition of the lens element.

[0089] In the context of the present disclosure, the term "optical lens" may refer to an uncut optical lens or an eyeglass optical lens or an ophthalmic lens that has been edged to fit a particular eyeglass frame, as well as an optical device adapted to be positioned on an ophthalmic lens. The optical device may be positioned on the front surface or the back surface of the ophthalmic lens. The optical device may be an optical patch. The optical device may be adapted to be removably positioned on the ophthalmic lens, such as a clip configured to be clipped onto an eyeglass frame comprising the ophthalmic lens.

[0090] A lens element according to the present disclosure is adapted for a wearer and is intended to be worn in front of the eye of said wearer.

[0091] like Figure 1 As shown, an optical lens 10 according to the present disclosure includes two opposite optical surfaces F1 and F2 and a plurality of continuous optical elements 12 .

[0092] like Figure 1 As shown, the lens element 10 according to the present disclosure comprises Figure 1 The object side surface F1 is formed as a convex curved surface toward the object side, and Figure 1 An eye-side surface F2 is formed on the object side surface F1 as a concave surface having a curvature different from that of the object-side surface F1.

[0093] According to an embodiment of the present disclosure, at least a portion, such as all, of the optical elements are located on the front surface of the lens element.

[0094] At least a portion, such as all, of the optical elements may be located on the rear surface of the lens element.

[0095] At least a portion, such as all, of the optical element may be located between the front and back surfaces of the lens element.For example, the lens element may comprise regions of different refractive indices forming the optical element.

[0096] The optical element according to the present disclosure is intended to be worn in front of an eye of a wearer having at least one prescription refractive power Px. The prescription power may correspond to a spherical and / or cylindrical power.

[0097] At least a portion of the optical lens 10 , for example all of the optical elements 12 , has the optical function of not focusing an image on the retina of the wearer's eye in order to slow down the development of ametropia of the eye.

[0098] Preferably, at least 50%, such as at least 80%, such as all of the optical elements do not focus an image on the retina of the wearer's eye in order to slow down the optical function of the progression of ametropia of the eye.

[0099] In the sense of the present disclosure, "focusing" is understood to mean producing a focused spot with a circular cross-section, which can be reduced to a point in the focal plane or to the size of a diffraction spot.

[0100] Advantageously, this optical function of the optical element reduces the deformation of the retina of the wearer's eye in peripheral vision, allowing to slow down the progression of refractive errors in the eye of the person wearing the lens element.

[0101] According to an embodiment of the present disclosure, at least a portion, for example, all of the optical elements have an optical function of focusing an image on a location other than the retina.

[0102] Preferably, at least 50%, such as at least 80%, such as all of the optical elements have the optical function of focusing an image on a location other than the retina.

[0103] According to a preferred embodiment of the present disclosure, at least for peripheral vision, all optical elements are configured such that the average focus of light rays passing through each optical element is the same distance from the wearer's retina.

[0104] like Figure 2 As shown, the plurality of continuous optical elements comprises a plurality of independent continuous optical elements 12 .

[0105] For the purposes of this disclosure, two optical elements are considered independent if they produce independent images.

[0106] Specifically, when illuminated by a parallel beam of light "under central vision," each "independent continuous optical element" forms a spot associated with it on a plane in image space. In other words, if one of the "optical elements" is hidden, even if it is continuous with another optical element, the spot disappears.

[0107] According to an embodiment of the present disclosure, an optical element is positioned on a web.

[0108] Although Figure 2Not exactly shown, but the web with the optical elements positioned can be as Figure 3a and Figure 3c Structured as shown.

[0109] According to embodiments of the present disclosure, optical elements may be positioned on a structured mesh, such as a square mesh or a hexagonal mesh or a triangular mesh or an octagonal mesh or a random mesh.

[0110] Figure 3a Shown are optical elements positioned according to a hexagonal grid.

[0111] Figure 3b Shown are the optical elements positioned according to a square grid.

[0112] Optical elements can also be positioned along multiple concentric rings.

[0113] The concentric ring of optical elements may be an annular ring.

[0114] According to an embodiment of the present disclosure, the lens element comprises optical elements arranged in at least 2 concentric rings, preferably more than 5, more preferably more than 10 concentric rings. For example, the optical elements may be arranged in 11 concentric rings centered on the optical center of the lens.

[0115] Alternatively, optical elements can be placed on a random structure mesh, such as a Voronoi mesh. Figure 3c As displayed.

[0116] Advantageously, placing the optical elements on a random structure limits the risk of light scattering or diffraction.

[0117] Wearing condition should be understood as the position of the optical lens relative to the wearer's eye, as defined by the anteversion angle, cornea to lens distance, pupil to cornea distance, center of rotation of the eye (CRE) to pupil distance, CRE to lens distance, and wrap angle.

[0118] The cornea-to-lens distance is the distance between the cornea and the posterior surface of the lens along the visual axis of the eye in primary position (usually considered to be horizontal), which is equal to 12 mm, for example.

[0119] The pupil-corneal distance is the distance between the pupil and the cornea along the visual axis of the eye and is usually equal to 2 mm.

[0120] The CRE-to-pupillary distance is the distance along the visual axis of the eye between its center of rotation (CRE) and the cornea, and is equal to, for example, 11.5 mm.

[0121] The CRE to lens distance is the distance between the CRE of the eye and the posterior surface of the lens along the visual axis of the eye in primary position (usually considered to be horizontal), for example equal to 25.5 mm.

[0122] The anteversion angle is the angle in the vertical plane between the normal to the back surface of the lens and the visual axis of the eye in the first ocular position (usually considered to be horizontal) at the intersection between the back surface of the lens and the visual axis of the eye in the first ocular position; for example, it is equal to -8°.

[0123] The wrap angle is the angle on the horizontal plane between the normal to the back surface of the lens and the visual axis of the eye in the first ocular position (usually considered to be horizontal) at the intersection between the back surface of the lens and the visual axis of the eye in the first ocular position, for example equal to 0°.

[0124] An example of a standard wearer condition may be defined by an anteversion angle of -8°, a cornea-to-lens distance of 12 mm, a pupil-to-cornea distance of 2 mm, a CRE-to-pupil distance of 11.5 mm, a CRE-to-lens distance of 25.5 mm, and a wrap angle of 0°.

[0125] The term "prescription" is understood to mean a set of optical properties, such as optical power, astigmatism, and prismatic deviation, determined by an ophthalmologist or optometrist in order to correct a visual defect of the eye, for example with the aid of a lens positioned in front of the wearer's eye. For example, a prescription for myopia comprises an optical power value and an astigmatism value with an axis for distance vision.

[0126] Although the present disclosure does not relate to progressive lenses, the wording used in this specification is similar to that in document WO 2016 / 146590. Figure 1 to Figure 1 0 is shown for progressive lenses. A skilled person can adapt these definitions for single vision lenses.

[0127] An optical lens or optical element may include a non-rotationally symmetric aspheric surface, such as, but not limited to, a progressive surface, a regressive surface, a toric surface, or a non-toric surface.

[0128] As is known, the minimum curvature CURV at any point on an aspheric surface is min It is defined by the following formula:

[0129]

[0130] Among them, R max is the local maximum curvature radius, expressed in meters, and CURV min Expressed in diopters.

[0131] Similarly, the maximum curvature CURV at any point on the aspheric surface max It can be defined by the following formula:

[0132]

[0133] Among them, R min is the local minimum curvature radius, expressed in meters, and CURV max Expressed in diopters.

[0134] It can be noted that when the surface is locally spherical, the local minimum curvature radius R min and the local maximum curvature radius R max are the same, and accordingly, the minimum and maximum curvatures CURV min and CURV max The same is true when the surface is aspherical, the local minimum curvature radius R min and the local maximum curvature radius R max are different.

[0135] From the minimum and maximum curvature CURV min and CURV max These expressions, denoted as SPH min and SPH max The minimum and maximum spheres can be inferred depending on the type of surface considered.

[0136] When the surface under consideration is the object-side surface (also called the front surface), these expressions are as follows:

[0137] as well as

[0138] Where n is the refractive index of the lens's component material.

[0139] If the surface under consideration is the lateral surface of the eyeball (also called the posterior surface), these expressions are as follows:

[0140] as well as

[0141] Where n is the refractive index of the lens's component material.

[0142] As is well known, the average spherical mirror SPHmean at any point on the aspherical surface can also be defined by the following formula:

[0143]

[0144] Therefore, the expression for the mean spherical power depends on the surface considered:

[0145] If the surface is an object-side surface, then

[0146] If the surface is the lateral surface of the eyeball, then

[0147] Also through the formula CYL=|SPH max -SPH min |Define cylinder CYL.

[0148] The properties of any aspheric surface of a lens can be expressed in terms of the local average sphere and cylinder. A surface is considered locally aspheric when the cylinder is at least 0.25 diopters.

[0149] For aspheric surfaces, the local cylindrical axis γAX can be further defined. Figure 4 shows the astigmatism axis γ as defined in the TABO convention, while Figure 5 The cylindrical axis γAX defined in the convention used to characterize aspheric surfaces is shown.

[0150] The cylindrical axis γAX is the angle of the orientation of the maximum curvature CURVmax relative to the reference axis and in the selected rotational direction. In the convention defined above, the reference axis is horizontal (the angle of this reference axis is 0°) and the rotational direction is counterclockwise for each eye when looking at the wearer (0°≤γAX≤180°). Therefore, an axis value of +45° for the cylindrical axis γAX represents an axis of oblique orientation that extends from the upper right quadrant to the lower left quadrant when looking at the wearer.

[0151] Furthermore, progressive addition lenses may also be defined by optical properties that take into account the condition of the person wearing the lens.

[0152] Figure 6 and Figure 7 is a diagrammatic representation of the optical system of the eye and lens, and therefore illustrates the definitions used in this specification. More precisely, Figure 6 A stereogram representing such a system, showing the parameters α and β used to define the gaze direction. Figure 7 is the view in a vertical plane parallel to the front-to-back axis of the wearer's head and passing through the center of eye rotation with parameter β equal to 0.

[0153] Label the center of eye rotation Q'. Figure 7The axis Q'F' shown in dashed lines is a horizontal axis that passes through the center of rotation of the eye and extends in front of the wearer, i.e., the axis Q'F' corresponding to the primary gaze angle. This axis intersects the aspherical surface of the lens at a point known as the fitting cross, which exists on the lens to enable the optician to position the lens in the frame. The point of intersection of the rear surface of the lens and the axis Q'F' is point O. If O is located on the rear surface, it can be the fitting cross. A top sphere with center Q' and radius q' is tangent to the rear surface of the lens at a point on the horizontal axis. As an example, a value of radius q' of 25.5 mm corresponds to a commonly used value and provides satisfactory results when the lens is worn.

[0154] Given a gaze direction (given by Figure 6 The solid line in the figure corresponds to the position of the eye rotating around Q' and the point J of the top ball; the angle β is the angle formed between the axis Q'F' and the projection of the straight line Q'J on the horizontal plane including the axis Q'F'; this angle appears Figure 6 The angle α is the angle formed between the axis Q'J and the projection of the straight line Q'J on the horizontal plane containing the axis Q'F'; this angle appears Figure 6 and Figure 7 . Thus, a given gaze angle corresponds to a point J on the top sphere or to a pair (α, β). If the value of the gaze reduction angle is larger in the positive direction, the gaze is reduced more; and if the value is larger in the negative direction, the gaze is increased more.

[0155] At a given gaze direction, the image of a point M in object space at a given object distance is formed between two points S and T corresponding to the minimum distance JS and the maximum distance JT, which will be the sagittal and tangential local focal lengths. The image of a point at infinity in object space is formed at point F'. Distance D corresponds to the posterior coronal plane of the lens.

[0156] The Ergorama function is a function that associates the usual distance of an object point with each gaze direction. Typically, in far vision following the main gaze direction, the object point is at infinity. In near vision following a gaze direction substantially corresponding to an angle α of about 35° and an angle β of about 5° with an absolute value toward the nasal side, the object distance is about 30 cm to 50 cm. For more details on possible definitions of the Ergorama function, consider U.S. Patent US-A-6,318,859. The document describes the Ergorama function, its definition, and its modeling method. For the method of the present disclosure, a point may be at infinity or not. The Ergorama function may be a function of the wearer's refractive error or the wearer's downlight addition.

[0157] These factors allow the wearer's optical power and astigmatism to be defined for each gaze direction. Consider an object point M at an object distance given by the eigenvalue function for the gaze direction (α, β). The object proximity ProxO is defined in object space for a point M on the corresponding ray as the reciprocal of the distance MJ between point M and point J on the top sphere:

[0158]

[0159] This enables the object proximity to be calculated within a thin lens approximation for all points of the top sphere, which is used to determine the eigenvalue function. For a real lens, the object proximity can be considered as the inverse of the distance between the object point and the front surface of the lens on the corresponding ray.

[0160] For the same gaze direction (α, β), the image of a point M with a given object proximity is formed between two points S and T corresponding to the minimum and maximum focal lengths, respectively (which will be the sagittal and tangential focal lengths). The quantity ProxI is called the image proximity of the point M:

[0161]

[0162] By analogy with the case of thin lenses, the optical power Pui can therefore be defined as the sum of the image proximity and the object proximity for a given gaze direction and a given object proximity, ie for a point in object space on the corresponding ray.

[0163] Pui=Pr oxO+pr oxI

[0164] Using the same notation, astigmatism Ast is defined for each gaze direction and given object proximity as:

[0165]

[0166] This definition corresponds to the astigmatism of the light beam generated by the lens. It should be noted that this definition gives a typical value for astigmatism in the primary direction of gaze. The angle of astigmatism, often referred to as the axis, is angle γ. Angle γ is measured in the reference system {Q', xm, ym, zm} associated with the eye. It corresponds to the angle at which image S or T is formed, depending on the convention used to associate direction zm in the plane {Q', zm, ym}.

[0167] The possible definitions of the power and astigmatism of the lenses in the wearing condition can therefore be calculated as explained in the paper by B. Bourdoncle et al. entitled "Ray tracing through progressive ophthalmic lenses" (1990 International Lens Design Conference, DT Moore ed., Proceedings of the British Institute of Photonics).

[0168] like Figure 2 As indicated, a pupil 16 having a diameter of at least 4 mm, for example 10 mm, can be defined, over which the modulation transfer function of the optical lens can be measured along at least one direction in a plane corresponding to at least one prescription refractive power to be greater than 0.1, for example greater than or equal to 0.2, between 0 and 20 cycles / degree.

[0169] The density of the continuous optical elements is such that at said pupil 16 a majority, for example at least 50% or at least 80%, of the light rays passing through the optical lens at said pupil 16 passes through at least one of the plurality of optical elements.

[0170] In the sense of the present disclosure, a ray is considered to have passed through an optical element if it passes through the largest inscribed circle of the optical element corresponding to the profile defined by the level of said differential optical path (DOP), said level being constant over said pupil and within the range [minimum level of DOP, minimum level of DOP + 10% of the amplitude], where the amplitude is the maximum level of said differential optical path (DOP) over said pupil.

[0171] At the pupil 16, the optical lens 10 generates a first optical path difference (OPD)1. The optical path is the product of the geometric length of the path followed by light through an optical system and the refractive index of the optical system. The difference in optical path length between the two paths is called the optical path difference (OPD). For the purposes of the present disclosure, the first optical path difference (OPD) is the difference in optical path length between a ray of light passing through the optical lens and a ray of light passing through air. For the purposes of the present disclosure, the following convention applies: for a spherical lens with positive optical power, the OPD is higher at its center than at its edges.

[0172] The OPD can be viewed and measured as a surface in 3D space and is denoted as (x,y,f(x,y)). The optimal sphere is the sphere whose parameters, its center and its radius are optimized, as disclosed in Chapter 6 of the document http: / / www.sci.utah.edu / ~balling / FEtools / doc_files / LeastSquaresFitting.pdf.

[0173] For the optimization process, the cost function can be defined by, for example, the sum over all points of the square of the difference between each point and the spherical mirror. This distance can be defined in at least two different ways:

[0174] -Z difference

[0175] - Distance in the normal direction (as described in the previous article).

[0176] A second optical path difference OPD2 corresponding to the best spherical fit optical lens can be determined.

[0177] A differential optical path DOP can be determined as the difference between the first optical path difference OPD1 and the second optical path difference OPD2. The differential optical path DOP of the optical lens according to the present disclosure is different from zero across the pupil. In other words, the first optical path difference OPD1 does not match the optical path difference of the spherical optical lens.

[0178] The optical element is continuous over the pupil when the portion of the differential optical path DOP within the range [lowest level of DOP, lowest level of DOP + 10% of the amplitude] represents less than 30%, such as at least 20%, such as at least 10%, such as at least 5% of the differential optical path (DOP) over the pupil, wherein the amplitude is the maximum level of the differential optical path (DOP) over the pupil.

[0179] Preferably, these measurements are made on an uncoated optical lens. While not necessarily limited to uncoated optical lenses, these measurements appear more accurate on uncoated optical lenses. However, it is possible to measure a coated optical lens and use a transfer function to determine what the measurement would be if the optical lens were uncoated. An example of such a transfer function is discussed in WO 2020 / 079105.

[0180] Advantageously, having a continuous optical element helps improve the aesthetics of the lens element and is easier to manufacture.

[0181] At least on the pupil 16, for example on all surfaces of the optical lens, each of these continuous optical elements demonstrates in

[0182] d is the characteristic dimension of the outer shape of the optical element in mm,

[0183] |P| is the absolute value of the characteristic optical power of the optical element expressed in diopters, and

[0184] K is a number greater than or equal to 0.9, for example, greater than 1.2, and less than or equal to 1.7, for example, less than 1.4.

[0185] The characteristic dimension d of the outer shape of each optical element may correspond to a specific size of each optical element.

[0186] To define the characteristic dimension d of each optical element, the differential optical path length DOP determined as previously described can be used.

[0187] The characteristic dimension of each optical element corresponds to the maximum diameter of the inscribed circle in the outline diagram defined by the level of the differential optical path (DOP), which level is constant within the pupil and is within the range [lowest level of DOP, lowest level of DOP + 10% of the amplitude], where the subvalue is the maximum level of the differential optical path (DOP) on the pupil.

[0188] In particular, the optical element may have an outer shape inscribed in a circle having a diameter greater than or equal to 0.2 mm, eg, greater than or equal to 0.4 mm, eg, greater than or equal to 0.6 mm, and less than or equal to 2.0 mm, eg, less than 1.0 mm.

[0189] If the optical element is spherical, the characteristic optical power of the optical element may be the spherical optical power, and if the optical element is non-spherical, the characteristic optical power of the optical element may be the best spherical optical power. For example, in the case of an aspherical optical element, the characteristic optical power is the average power of the aspherical optical function of the optical element.

[0190] According to an embodiment of the present disclosure, at least a portion, for example, all of the optical elements have a characteristic optical power less than or equal to 20D, for example, less than or equal to 10D, for example, less than or equal to 6D.

[0191] According to an embodiment of the present disclosure, at least a portion, for example, all, of the optical elements have a constant optical power and a discontinuous first derivative between two consecutive optical elements.

[0192] Alternatively, at least some, for example all, of the optical elements have a varying optical power and a change in the sign of the power between two consecutive optical elements.

[0193] The optical function, in particular the refractive function, of each optical element can be optimized to provide a focused image at a constant distance from the retina of the wearer's eye, in particular in peripheral vision. This optimization requires adjusting the refractive function of each optical element according to its position on the lens element.

[0194] In particular, the inventors have determined that the spot diagram of a light beam passing through a spherical 3D shaped microlens analyzed in peripheral vision (30° from the pupil center) is not a single point.

[0195] To achieve this, the inventors have determined that the optical element should have cylindrical power, for example, have a toric shape.

[0196] According to an embodiment of the present disclosure, at least one, for example all, optical elements have an aspheric optical function under standard wearing conditions.

[0197] According to another embodiment of the present disclosure, at least one, for example all, optical elements have cylindrical power.

[0198] According to an embodiment of the present disclosure, the optical element is configured such that, at least along a segment of the lens, the average sphere of the optical element varies from a point of the segment towards the periphery of the segment.

[0199] The optical element can be further configured such that along at least a segment of the lens, for example at least the same segment along which the average sphere of the optical element varies, the cylindrical lens varies from a point on the segment (for example, the same point as the average sphere) toward a peripheral portion of the segment.

[0200] Advantageously, the optical element is configured such that along at least one segment of the lens, the average sphere and / or average cylinder of the optical element varies from a certain point of said segment towards a peripheral part of said segment, allowing to change the defocus of the light rays in front of the retina in case of myopia, or to change the defocus of the light rays behind the retina in case of hyperopia.

[0201] In other words, the inventors have observed that configuring the optical element such that along at least one segment of the lens the average sphere of the optical element changes from a point of the segment towards the peripheral portion of the segment helps to slow the progression of refractive errors of the eye such as myopia or hyperopia.

[0202] The optical element may be configured such that along at least one segment of the lens, the average sphere and / or cylinder of the optical element varies from the center of the segment towards a peripheral portion of the segment, e.g. increasing then decreasing, e.g. decreasing, e.g. increasing.

[0203] According to an embodiment of the present disclosure, the optical element is configured such that, under standard wearing conditions, at least one segment is a horizontal segment.

[0204] The optical lens may include an optical center, and the optical element may be configured such that along any segment through the optical center of the lens, the average sphere and / or cylinder of the optical element changes, e.g., increases, from the optical center toward a peripheral portion of the lens.

[0205] The optical lens may include a distance reference point, a near reference point, and a meridian connecting the distance reference point and the near reference point. In such embodiments, the optical element may be configured such that, under standard wearing conditions, along any horizontal segment of the lens, the average sphere and / or cylinder of the optical element varies, e.g., increases, from the intersection of the horizontal segment and the meridian toward a peripheral portion of the lens.

[0206] Preferably, according to such an embodiment, the optical element is configured such that, under standard wearing conditions, along any horizontal segment of the lens, the average sphere and / or cylinder of the optical element changes, e.g. increases, from the intersection of said horizontal segment with the meridian towards the peripheral portion of the lens.

[0207] The meridian corresponds to the locus of intersection of the main gaze direction and the lens surface.

[0208] The variation function, for example the increase function, of the average sphere and / or cylinder along a segment may differ depending on the position of the segment along the meridian.

[0209] In particular, the variation function, eg the gain function, of the average sphere and / or cylinder along the segment may be asymmetric. For example, under standard wearing conditions, the average sphere and / or cylinder gain function is asymmetric along the vertical and / or horizontal segment.

[0210] The average sphere and / or cylinder may increase along at least one horizontal segment according to an increasing function, the increasing function being a Gaussian function. The Gaussian function may be different between the nasal and temporal portions of the lens to account for asymmetry of the human retina.

[0211] Alternatively, the average sphere and / or cylinder may vary along at least one horizontal segment according to an augmentation function that is a quadratic function. The quadratic function may be different between the nasal and temporal portions of the lens to account for asymmetries of the human retina.

[0212] According to an embodiment of the present disclosure, the average spherical and / or cylindrical lens of the optical element changes from a first point of the segment toward the peripheral portion of the segment, for example, increases, and changes from a second point of the segment toward the peripheral portion of the segment, for example, decreases, and the second point is closer to the peripheral portion of the segment than the first point.

[0213] Such examples are presented in Table 1, which provides the average sphere of the optical elements according to their radial distance from the optical center of the lens element.

[0214] For example, the optical elements may be regularly distributed along a circle centered on the optical center of the optical lens.

[0215] The optical elements on a circle having a diameter of 10 mm and centered at the optical center of the optical lens can be microlenses with an average spherical lens of 2.75D.

[0216] The optical elements on a circle having a diameter of 20 mm and centered at the optical center of the refractive area may be microlenses having an average spherical lens of 4.75D.

[0217] The optical elements on a circle having a diameter of 30 mm and centered at the optical center of the refractive area may be microlenses having an average spherical lens of 5.5D.

[0218] The optical elements on a circle having a diameter of 40 mm and centered at the optical center of the refractive area may be microlenses having an average spherical lens of 5.75D.

[0219] The cylinders of the different optical elements can be adjusted based on the shape of the human retina.

[0220] According to an embodiment of the present disclosure, the optical element is transparent, preferably at least 50%, such as at least 80%, such as at least 95%, such as all of the optical element is transparent.

[0221] Advantageously, the optical element is not visible on the lens element and does not affect the aesthetics of the lens element.

[0222] The optical element may cover a specific area of ​​the lens element, like in the center or any other area.

[0223] The optical element may be provided over the entire surface of the lens element.

[0224] The optical element density or the optical power of each optical element can be adjusted according to the zone of the lens element. Typically, the optical element density or optical power can be adjusted so that it improves the effect of the optical element on myopia control in order to compensate for peripheral defocus due to, for example, the peripheral shape of the retina.

[0225] According to an embodiment of the present disclosure, at least one, for example, all, optical elements are shaped to form a caustic surface in front of the retina of the human eye. In other words, the optical element is configured so that each segment plane (if any) where the light flux is concentrated is located in front of the retina of the human eye.

[0226] According to an embodiment of the present disclosure, at least one, for example all, of the optical elements having an aspherical optical function are multifocal microlenses.

[0227] In the sense of the present disclosure, "multifocal microlens" includes bifocal (having two focal powers), trifocal (having three focal powers), continuously varying focal powers, and continuously varying surface focal powers that are rotationally symmetric about the axis, for example, the microlens is rotationally symmetric, for example, has an aspherical shape.

[0228] According to an embodiment of the present disclosure, at least one of the optical elements, preferably more than 50%, more preferably more than 80% of the optical elements are aspherical microlenses. In the sense of the present disclosure, an aspherical microlens has a continuous power evolution on its surface.

[0229] The aspheric microlens may have an asphericity between 0.1 D and 10 D. The asphericity of the aspheric microlens corresponds to a difference between an optical power measured at a first point of the optical element and an optical power measured at a second point of the microlens element, the first point and the second point being disposed at different radial distances from a geometric center of the optical element.

[0230] The geometric center corresponds to the center of the largest inscribed circle in the outline defined by the level of the differential optical path (DOP), which is constant on the pupil and within the range [minimum level of DOP, minimum level of DOP + 10% of the amplitude], where the amplitude is the maximum level of the differential optical path (DOP) on the pupil.

[0231] According to an embodiment of the present disclosure, the absolute value of the optical power of the aspherical microlens at the first point is between 2.0D and 7.0D, and the absolute value of the optical power at the second point is between 1.5D and 6.0D.

[0232] Before coating the surface of the lens element on which the optical element is provided, the asphericity of the aspheric microlenses may vary as a function of the radial distance from the optical center of said lens element.

[0233] Furthermore, after coating the surface of the lens element on which the optical element is provided, the asphericity of the aspheric microlenses may further vary as a function of the radial distance from the geometrical center of said lens element.

[0234] According to an embodiment of the present disclosure, at least one multifocal refractive microlens has a toric surface. A toric surface is a surface of revolution that can be generated by rotating a circle or arc about an axis of revolution (ultimately located at infinity) that does not pass through its center of curvature.

[0235] A toric surface lens has two different radial profiles at right angles to each other, thus producing two different focal powers.

[0236] The toric and spherical components of a toric lens produce an astigmatic beam rather than a single point of focus.

[0237] According to an embodiment of the present disclosure, at least one, for example, all, of the optical elements having an aspheric optical function are toric refractive microlenses, for example, toric refractive microlenses having a spherical power value greater than or equal to 0 diopters (δ) and less than or equal to +5 diopters (δ) and a cylindrical power value greater than or equal to 0.25 diopters (δ).

[0238] As a specific embodiment, the toric refractive microlens can be a pure cylindrical lens, meaning that the meridian minimum power is zero and the meridian maximum power is strictly positive, for example, less than 5 diopters.

[0239] Optical elements and / or optical lenses can be manufactured using different techniques such as direct surface treatment, molding, casting or injection molding, embossing, film forming, or photolithography...

[0240] The present disclosure further relates to a molding element suitable for molding an optical lens according to the present disclosure.

[0241] For example, the present disclosure relates to a molding element for a lens element comprising a plurality of continuous optical elements, the molding element comprising a main surface having a curvature and comprising a plurality of continuous surface elements, each surface element having a curvature different from the curvature of the main surface,

[0242] Among them, on a disc with a diameter of at least 4 mm:

[0243] - said continuous surface element covers a majority of said major surface, and

[0244] - Each of said continuous surface elements verifies in

[0245] d is the characteristic dimension of the outer shape of the surface element in mm,

[0246] |C| is the absolute value of the characteristic curvature of said surface element expressed in diopters, and

[0247] L is a number greater than or equal to 1 and less than or equal to 7.6.

[0248] Such a mould allows obtaining an optical lens according to the invention.

[0249] Optical power is related to curvature by P = dn x C, where 1 diopter of refractive index difference on either side of dn. Based on this relationship, to obtain an optical lens according to the present disclosure with a K between 0.1 and 0.5, a mold with an L between 1 and 7.6 is required.

[0250] Indeed, because So L is equal to

[0251] In the case of dn=0.05, L should be between 4 and 7.6, and in the case of dn=0.8, L should be between 1 and 1.9.

[0252] like Figure 8 As shown, a mold 20 for an optical lens according to the present disclosure may include a first molding element 21 , a second molding element 22 , and a gasket 23 .

[0253] The first surface 24 of the first molding element 21 has a first surface curvature. For example, the first surface 24 has a spherical surface curvature. Alternatively, the first surface 24 may have an aspherical surface curvature and / or a cylindrical surface curvature and / or a toric surface curvature.

[0254] The first surface 24 includes a major surface having a curvature and a plurality of continuous surface elements 26, each surface element having a curvature that is different from the curvature of the major surface.

[0255] For example, surface elements 26 of the first surface 24 of the first molding element 21 may correspond to optical elements of the optical lens to be produced.

[0256] The surface element 26 may have surface features corresponding to all features disclosed with respect to the optical elements of the optical lens according to the present disclosure.

[0257] Specifically, on discs of at least 4 mm diameter:

[0258] - said continuous surface element covers a majority of said major surface, and

[0259] - Each of said continuous surface elements verifies in

[0260] d is the characteristic dimension of the outer shape of the surface element in mm,

[0261] |C| is the absolute value of the characteristic curvature of said surface element expressed in diopters, and

[0262] L is a number greater than or equal to 1 and less than or equal to 7.6.

[0263] According to an embodiment of the present disclosure, at least two of the plurality of surface elements 26 are continuous. In the sense of the present disclosure, two surface elements are continuous if, for at least one path connecting the two surface elements, the first surface curvature of the first surface 24 of the first molding element 21 cannot be measured along the at least one path.

[0264] For example, at least a portion, eg, all, of the plurality of surface elements 26 may be positioned in a structured network.

[0265] According to an embodiment of the present disclosure, at least a portion, for example, all, of the plurality of surface elements 26 on the first surface of the first molding element are arranged in a rotationally symmetric manner about an axis, for example, centered on the geometric center of the first surface 24 of the first molding element 21. In other words, at least a portion of the plurality of surface elements 26 may be regularly distributed along at least one circle centered on the geometric center of the first surface 24 of the first molding element 21.

[0266] According to an embodiment of the present disclosure, at least a portion, for example, all of the plurality of surface elements 26 are placed on the first surface 24 of the first molding element 21 in at least one ring.

[0267] The plurality of surface elements can further be organized into concentric rings on the first surface of the first molding element. For example, the plurality of surface elements 26 are positioned along a set of 11 concentric rings across the entire first surface 24 of the first molding element 21. The surface element concentric rings can be centered about the geometric center of the first surface 24 of the first molding element 21.

[0268] The average surface curvature of the plurality of surface elements 26 may be the same for all surface elements of the same concentric ring. In particular, the average surface curvature of the central region of the surface elements 26 of the same concentric ring is the same.

[0269] According to other embodiments of the present disclosure, the plurality of surface elements 26 may be organized in different patterns, such as a square pattern.

[0270] The mold 20 for an optical lens may further include a second molding element 22. The second molding element 22 has a second surface. Figure 8 In FIG. 2 , the second surface of the second molding element 22 is not shown because it faces the first surface 24 of the first molding element.

[0271] The mold 20 for an optical lens further includes a gasket 23 . The gasket 23 has an annular form and includes an inner surface 23 a and an outer surface 23 b . The gasket 23 further includes an opening 27 .

[0272] Gasket 23 seals first and second molding elements 21 and 22 together to form molding cavity 30. Molding cavity 30 is defined by first surface 24 of first molding element 21 including surface element 26, second surface of second molding element 22, and inner surface 23a of gasket 23.

[0273] The moulding cavity 30 of the mould 20 for the lens element 10 is filled with moulding material through the opening 27. Although shown in the gasket 23, the opening 27 may alternatively be placed on the first moulding element or the second moulding element.

[0274] For example, the molding material may be a casting material that is injected into the molding cavity through the opening 27 of the gasket 23. The casting material in the molding cavity is further polymerized into the lens material, thereby forming the lens element 10.

[0275] Alternatively, the molding material may be a thermoplastic material. The thermoplastic material in a first liquid state at a first temperature is injected into the molding cavity 30 through the opening 27. During cooling, the thermoplastic material changes from the first liquid state to a second solid state corresponding to the lens material of the lens element 10.

[0276] Numerous further modifications and variations will be apparent to those skilled in the art upon reference to the foregoing illustrative embodiments, which are presented by way of example only and are not intended to limit the scope of the disclosure, which is to be determined solely by the appended claims.

[0277] In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that different features are recited in mutually different dependent claims does not indicate that a combination of these features cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope of the disclosure.

Claims

1. An optical lens intended to be worn in front of an eye of a wearer, said optical lens having at least one prescribed refractive power Px, said optical lens comprising two opposite optical faces and a plurality of continuous optical elements, at least some of said optical elements having an optical function of not focusing an image on the retina of the eye of the wearer in order to slow down the progression of ametropia of the eye, wherein: a modulation transfer function of the optical lens greater than 0.1 between 0 and 20 cycles / degree, measurable along at least one direction in a plane corresponding to the at least one prescribed optical power, over a pupil having a diameter of at least 4 mm; At least 50% of the light rays passing through the optical lens at the pupil pass through at least one optical element of the plurality of continuous optical elements, and Each of the continuous optical elements demonstrates d = , Where d is the characteristic dimension of the outline of the optical element in mm. The characteristic dimension of each optical element corresponds to the maximum diameter of the inscribed circle in the outline drawing defined by the level of differential optical path (DOP). |P| is the absolute value of the characteristic best spherical power of said optical element expressed in diopters, and K is a number greater than or equal to 0.9 and less than or equal to 1.7, wherein, on the pupil, the optical lens generates a first optical path difference (OPD1), the best spherical fit optical lens generates a second optical path difference (OPD2), a differential optical path (DOP) is formed as the difference between the first optical path difference (OPD1) and the second optical path difference (OPD2), and the differential optical path (DOP) is different from zero, and wherein the portion of the differential optical path (DOP) at the pupil that is within the range [minimum level of differential optical path, minimum level of differential optical path + 10% of amplitude] represents less than 30% of the differential optical path (DOP) at the pupil, wherein the amplitude is the maximum level of the differential optical path (DOP) at the pupil.

2. The optical lens according to claim 1, wherein: The level is constant across the pupil and is within the range [minimum level of differential optical path, minimum level of differential optical path + 10% of amplitude], where the amplitude is the maximum level of the differential optical path (DOP) across the pupil.

3. The optical lens according to claim 1 or 2, wherein: At least a portion of the optical elements has a characteristic optical power with an absolute value less than or equal to 20D.

4. The optical lens according to claim 3, wherein: The pupil, with a diameter of 4 mm, comprises the reference point of the optical lens, ie the fitting cross or the optical centre or the geometric centre.

5. The optical lens according to claim 3, wherein: The optical elements are positioned on a structured mesh, which is a square mesh, a hexagonal mesh, a triangular mesh, an octagonal mesh, or a random mesh.

6. The optical lens according to claim 3, wherein: At least one of the optical elements has an optical function of focusing an image at a location outside the retina under standard wearing conditions.

7. The optical lens according to claim 3, wherein: At least one of the optical elements has an optical function of not focusing an image onto a location outside the retina under standard wearing conditions.

8. The optical lens according to claim 3, wherein: At least 50% of the light passing through the optical lens at the pupil passes through at least one optical element of the plurality of optical elements.

9. The optical lens according to claim 3, wherein: At least a portion of the optical element is located on the front surface of the optical lens.

10. The optical lens according to claim 3, wherein: At least a portion of the optical element is located on the rear surface of the optical lens.

11. The optical lens according to claim 3, wherein: At least a portion of the optical element is located between the front surface and the back surface of the optical lens.

12. A moulding element for a lens element comprising a plurality of consecutive optical elements, the moulding element comprising a main surface having a curvature and comprising a plurality of consecutive surface elements, each surface element having a curvature different from the curvature of the main surface, in, On a disc of at least 4 mm diameter: - said continuous surface element covers at least 50% of said major surface, and - Each of the continuous surface elements verifies d = ,in d is the characteristic dimension of the outline of the surface element in mm, the characteristic dimension of each optical element corresponds to the maximum diameter of the inscribed circle in the outline diagram defined by the level of differential optical path (DOP), |C| is the absolute value of the characteristic curvature of said surface element expressed in diopters, and L is a number greater than or equal to 1 and less than or equal to 7.6, wherein, at the pupil, the lens element produces a first optical path difference (OPD1), the best spherical fit lens element produces a second optical path difference (OPD2), a differential optical path (DOP) is formed as the difference between the first optical path difference (OPD1) and the second optical path difference (OPD2), the differential optical path (DOP) being different from zero, and wherein the portion of the differential optical path (DOP) at the pupil that is within the range [minimum level of differential optical path, minimum level of differential optical path + 10% of amplitude] represents less than 30% of the differential optical path (DOP) at the pupil, wherein the amplitude is the maximum level of the differential optical path (DOP) at the pupil.

13. A moulding element suitable for moulding an optical lens according to any one of claims 1 to 11.

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