Spectacle lens and computer-implemented method for determining spectacle lens

Abstract

An ophthalmic lens comprising at least: a first region comprising a plurality of micro-optical elements arranged to cover at least 30% of a total area of the first region; and a second region comprising a plurality of micro-optical elements arranged to cover at least 30% of a total area of the second region; wherein the first region is different from the second region; and wherein the micro-optical elements of the first and second zones are arranged such that, for a predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs by less than 40% from the value of the modulation transfer function of the second zone.

Description

Technical Field

[0001] The present invention relates to an ophthalmic lens for improving the visual ability of a wearer, the ophthalmic lens including micro-optical elements. The present invention also relates to a computer-implemented method for determining an ophthalmic lens including micro-optical elements. Background Art

[0002] Myopia of the eye is characterized in that the eye focuses light in front of the retina. In other words, the eye of a myopic person has a length that is not suitable for clear vision. Myopia has both genetic and environmental causes. In the latter case, the development of myopia is due to, for example, an increase in near vision tasks and the use of digital devices (such as the digital screens of computers and smartphones), and also due to a decrease in outdoor activities.

[0003] There are many solutions aimed at reducing the progression of myopia. For example, it is known to use lenses that are arranged to be worn in front of one eye of a subject and have micro-optical elements, these micro-optical elements including optical features adapted to provide an evolution control function for myopia in order to manage myopia progression and / or relieve discomfort caused by myopia and / or myopia control. These solutions are effective, but may change the visual acuity of the subject. Summary of the Invention

[0004] In this context, an object of the present invention is to provide an ophthalmic lens that improves the visual ability of a wearer and has a good compromise between vision correction, visual acuity, and myopia discomfort and evolution control.

[0005] According to the present invention, the above object is achieved by providing an ophthalmic lens that at least includes

[0006] - a first zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone, and

[0007] - a second zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the second zone,

[0008] The first zone is different from the second zone, and the micro-optical elements of the first zone and the second zone are arranged such that

[0009] For a predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by less than 40%.

[0010] Due to the characteristics of the ophthalmic lens, the ophthalmic lens presents a good compromise between visual acuity and myopia discomfort and evolution control.

[0011] Typically, defining at least two zones in an ophthalmic lens having the same shape but different orientations or positions will allow for taking into account changes in the direction of gaze. Thus, if the values of the corresponding modulation transfer functions (or modulation rates) of these two zones are almost the same, it means that the ophthalmic lens provides an almost stable visual quality for different directions of gaze defined by the positions of the at least two zones.

[0012] In addition, defining at least two zones having different sizes will allow for taking into account changes in the typical pupil size of the wearer. Thus, if the values of the corresponding modulation transfer functions (or modulation rates) of these two zones are almost the same, it means that the ophthalmic lens provides an almost stable visual quality for different lighting environments that the wearer may encounter in real life (e.g., indoor or outdoor activities, etc.).

[0013] According to an embodiment, the predetermined spatial frequency range is a first predetermined spatial frequency range.

[0014] The micro-optical elements of the first zone and the micro-optical elements of the second zone are arranged such that:

[0015] For a second predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by more than 10%.

[0016] In an example of this embodiment, the second predetermined spatial frequency range differs from the first predetermined spatial frequency range by at least 5 cycles / degree.

[0017] In another example of this embodiment,

[0018] - The first spatial frequency range is between 1 and 5 cycles / degree, and the second spatial frequency range is between 15 and 20 cycles / degree, or

[0019] - The second spatial frequency range is between 1 and 5 cycles / degree, and the first spatial frequency range is between 15 and 20 cycles / degree.

[0020] According to an embodiment, the projection of the first zone on a plane perpendicular to the optical axis of the ophthalmic lens presents a circular profile and has a diameter between 2 and 20 millimeters.

[0021] According to another embodiment, the projection of the second zone on a plane perpendicular to the optical axis of the ophthalmic lens presents a circular profile and has a diameter between 2 and 20 millimeters.

[0022] According to an embodiment, the projection of the first zone on a plane perpendicular to the optical axis of the ophthalmic lens and the projection of the second zone on this plane have different shapes or different sizes.

[0023] According to an embodiment, the projection of the first zone on a plane perpendicular to the optical axis of the ophthalmic lens and the projection of the second zone on this plane are concentric.

[0024] According to an embodiment, the geometric center of the projection of the first zone on a plane perpendicular to the optical axis of the spectacle lens is spaced apart from the geometric center of the projection of the second zone on this plane by at least 0.5 mm.

[0025] According to an embodiment, the spectacle lens comprises a third zone, which comprises a plurality of micro-optical elements, the plurality of micro-optical elements being arranged so as to cover at least 30% of the total area of the third zone, the third zone having an outer contour presenting a geometric center, the center of the third zone being spaced apart from the center of the first zone by less than 0.5 mm, and the micro-optical elements of the first zone and of the third zone being arranged so that the first zone and the third zone have respective modulation transfer functions which provide, for each frequency within a first predetermined spatial frequency range, substantially the same respective modulation rates, with a tolerance of less than 20%.

[0026] In other words, this means that the modulation rate of the third zone differs from the modulation rate of the first zone by less than 20%.

[0027] According to an embodiment, the respective modulation rates of the first zone and of the third zone are substantially the same, with a tolerance of less than 10%.

[0028] In other words, this means that the modulation rate of the third zone differs from the modulation rate of the first zone by less than 10%.

[0029] According to an embodiment, the first zone and the third zone are concentric.

[0030] According to an embodiment, the spatial frequency range in which the modulation rates of the respective modulation transfer functions are considered lies between 1 and 5 cycles / degree or between 15 and 20 cycles / degree.

[0031] According to an embodiment, the density of the micro-optical elements of the first zone differs from the density of the micro-optical elements of the second zone by less than 5%, and / or

[0032] - the average optical power of at least one of the micro-optical elements of the first zone is different from the average optical power of at least one of the micro-optical elements of the second zone, and / or

[0033] - the optical function of at least one of the micro-optical elements of the first zone is different from the optical function of at least one of the micro-optical elements of the second zone, and / or

[0034] - the diameter of at least one of the micro-optical elements of the first zone differs from the diameter of at least one of the micro-optical elements of the second zone by less than 5%.

[0035] In the present disclosure, the density of the micro-optical elements on a predetermined zone of the spectacle lens can be defined as the ratio between the total surface of the micro-optical elements and the area of the predetermined zone.

[0036] According to an embodiment, for a spatial frequency between 1 and 5 cycles / degree, the value of the modulation transfer function of the first zone is higher than 0.3, for example higher than 0.4 or higher than 0.5, and

[0037] for a spatial frequency between 15 and 20 cycles / degree, the value of the modulation transfer function of the first zone is higher than 0.05, for example higher than 0.1, for example higher than 0.5, and / or

[0038] for a spatial frequency between 1 and 5 cycles / degree, the value of the modulation transfer function of the second zone is higher than 0.3, for example higher than 0.4 or higher than 0.5, and

[0039] for a spatial frequency between 15 and 20 cycles / degree, the value of the modulation transfer function of the second zone is higher than 0.05, for example higher than 0.1 or, for example higher than 0.5.

[0040] According to an embodiment, at least one micro-optical element in the micro-optical elements of the first zone has an average optical power value between 1 diopter and 10 diopters, and / or at least one micro-optical element in the micro-optical elements of the second zone has an average optical power value between 1 diopter and 10 diopters.

[0041] According to an embodiment, the micro-optical elements of the first zone are arranged according to a first pattern of micro-optical elements including at least two first concentric circles, and a first circle of the at least two first concentric circles is spaced apart from a second circle of the at least two first concentric circles by at least 1 mm, and / or

[0042] the micro-optical elements of the second zone are arranged according to a second pattern of micro-optical elements including at least two second concentric circles, and a first circle of the at least two second concentric circles is spaced apart from a second circle of the at least two second concentric circles by at least 1 mm.

[0043] According to an embodiment, at least one micro-optical element in the micro-optical elements of the first zone is spaced apart from at least another micro-optical element in the micro-optical elements of the first zone or at least a micro-optical element in the micro-optical elements of the second zone by at least 0.3 mm.

[0044] According to an embodiment, at least one micro-optical element in the micro-optical elements of the first zone or at least one micro-optical element in the micro-optical elements of the second zone provides a refractive optical function, a diffractive optical function or a diffusive optical function.

[0045] According to an embodiment, the spectacle lens includes a third zone, and the third zone includes a plurality of micro-optical elements, and the plurality of micro-optical elements are arranged to cover at least 30% of the third zone.

[0046] The third zone is different from the first zone, the third zone is different from the second zone, and the micro-optical elements of the first zone and the micro-optical elements of the third zone are arranged such that:

[0047] For a predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the third zone by less than 20%.

[0048] According to an embodiment, each micro-optical element is spaced apart from other micro-optical elements by at least 0.4 mm.

[0049] According to an embodiment, each micro-optical element is spaced apart from other micro-optical elements by at least 0.5 mm.

[0050] Another object of the present invention is to provide a vision compensation glasses, which vision compensation glasses include a frame and two spectacle lenses according to the present disclosure.

[0051] Another object of the present invention is to provide a computer-implemented method for determining a spectacle lens intended to be worn on the eyes of a wearer, the method comprising:

[0052] - Defining a first zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone;

[0053] - Defining a second zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the second zone;

[0054] The first zone is different from the second zone,

[0055] - Determining the shape, size and position of each micro-optical element in the first zone and in the second zone such that the first zone has a modulation transfer function and the second zone has a modulation transfer function, and for a first predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by less than 40%.

[0056] Due to the method according to the present invention, the optimization of the optical design of the micro-optical elements is performed in at least two different zones of the spectacle lens. This makes it possible to take into account new parameters during the optimization process, such as the radius of curvature of the spectacle lens, and / or the variation of the focal length and / or the refractive power correction, which new parameters can vary over the area of the spectacle lens and can affect the performance of the spectacle lens. In fact, the optical performance of the spectacle lens varies over the area of the spectacle lens. Therefore, by using the method according to the present invention, the performance of the spectacle lens can be better controlled.

[0057] Therefore, the determination of the optical characteristics of the spectacle lens is more accurate and thus improved. This makes it possible to better determine an optical lens having desired optical properties and desired optical characteristics. Thus, the spectacle lens obtained presents a better compromise for the wearer between visual acuity and myopia control efficacy, for example in terms of visual discomfort caused by the control of myopia progression achieved by the micro-optical elements.

[0058] According to an embodiment, the first zone and the second zone differ from each other in at least one of the following elements:

[0059] - The center of the first zone is located at a position different from the center of the second zone;

[0060] - The shape of the first zone is different from the shape of the second zone;

[0061] - The size of the first zone is different from the size of the second zone;

[0062] - The orientation of the first zone is different from the orientation of the second zone.

[0063] According to an embodiment, for a first predetermined spatial frequency range, if the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by more than 40%, the determination step comprises changing the optical characteristics of the micro-optical elements in the first zone and in the second zone.

[0064] According to an embodiment, for a first predetermined spatial frequency range, if the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function by less than 40%, the determination step comprises:

[0065] a) Defining another first zone, the other first zone comprising a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone,

[0066] b) Defining another second zone, the other second zone comprising a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone,

[0067] The first other zone is different from the second other zone, different from the second zone and the first zone, and the second other zone is different from the second zone and the first zone,

[0068] c) Determining the shape, size and position of each micro-optical element in the first other zone and in the second other zone such that the first other zone has a modulation transfer function and the second other zone has a modulation transfer function, and for the first predetermined spatial frequency range, the value of the modulation transfer function of the first other zone differs from the value of the modulation transfer function of the second other zone by less than 40%.

[0069] According to an embodiment, in determination step c), if, for a first predetermined spatial frequency range, the value of the modulation transfer function of the first other region differs from the value of the modulation transfer function of the second other region by less than 40%, steps a), b), and c) are iteratively performed again to spatially scan the optical design of the spectacle lens.

[0070] According to an embodiment:

[0071] - In the step of defining the first region, the first region is centered on the micro-optical axis of the reference micro-optical element included in the first region, or the first region is centered on a center that is offset from the micro-optical axis of the reference micro-optical element included in the first region by at least 0.5 mm.

[0072] - In the step of defining the second region, the second region is centered on the micro-optical axis of the reference micro-optical element included in the second region, or is centered on a center that is offset from the micro-optical axis of the reference micro-optical element included in the second region by at least 0.5 mm.

[0073] According to an embodiment:

[0074] - When defining the first region, the first region has a circular shape with a diameter between 4 mm and 8 mm.

[0075] - When defining the second region, the second region has a circular shape with a diameter between 4 mm and 8 mm.

[0076] In this embodiment, when defining the first region and the second region, the first region and the second region are concentric, and the first region may include a diameter different from that of the second region.

[0077] According to an embodiment, the first region includes a center and the second region includes a center, and the position of the center of the first region is different from the position of the center of the second region.

[0078] According to an embodiment, the method further includes the step of providing a final lens design of the spectacle lens based on the sizes, shapes, and positions of the micro-optical elements in the first region and the second region, the final lens design corresponding to the optical design of the spectacle lens intended to be worn by the wearer.

[0079] According to an embodiment, in the determination step and for a second predetermined spatial frequency range, the value of the modulation transfer function of the first region differs from the value of the modulation transfer function of the second region by more than 10%.

[0080] In this embodiment:

[0081] - The first spatial frequency range may be between 1 and 5 cycles / degree, and the second spatial frequency range may be between 15 and 20 cycles / degree, or

[0082] - The second spatial frequency range can be between 1 and 5 cycles / degree, and the first spatial frequency range can be between 15 and 20 cycles / degree.

[0083] Another object of the present invention is to provide a method for manufacturing an ophthalmic lens, the method comprising:

[0084] - The step of determining the design of the ophthalmic lens using a computer-implemented method as described above,

[0085] - The step of manufacturing the ophthalmic lens following the design.

[0086] In the present disclosure, the terms "first zone", "second zone", "third zone", "fourth zone", "fifth zone" and "sixth zone" are not restrictive and allow to distinguish different zones of an ophthalmic lens according to the present disclosure.

[0087] Detailed description of the examples

[0088] The following description given with reference to the accompanying drawings will make clear what is included in the present invention and how the present invention can be implemented. The present invention is not limited to the (multiple) embodiments shown in the drawings. Accordingly, it should be understood that in the case where a feature mentioned in the claims is followed by a reference sign, the inclusion of such reference sign is only for the purpose of enhancing the intelligibility of the claims and in no way limits the scope of the claims.

[0089] In the drawings:

[0090] - Figure 1 A schematic perspective view of an eyeglass including a pair of lenses according to the present disclosure is shown;

[0091] - Figure 2 A schematic axial cross-sectional view of an ophthalmic lens according to the present disclosure is shown;

[0092] - Figure 3 A schematic stereoscopic half-view of an ophthalmic lens according to the present disclosure is shown;

[0093] - Figure 4 A front view of a first example of an ophthalmic lens according to the present disclosure when projected onto a facial plane perpendicular to the main axis of the ophthalmic lens is shown;

[0094] - Figure 5 Shows Figure 4 An enlarged view of a part of the shown ophthalmic lens;

[0095] - Figure 6 A graphical representation of the modulation transfer function calculated in the first and second zones of an ophthalmic lens according to the first example is shown;

[0096] - Figure 7Shows a front view of a second example of an eyewear lens according to the present disclosure when projected onto a facial plane perpendicular to the main axis of the eyewear lens;

[0097] - Figure 8 Shows an enlarged view of a portion of an eyewear lens according to the second example;

[0098] - Figure 9 Shows a graphical representation of the modulation transfer function calculated in the third and fourth zones of an eyewear lens according to the second example;

[0099] - Figure 10 Shows a graphical representation of the modulation transfer function calculated in the fifth and sixth zones of an eyewear lens according to the second example;

[0100] - Figure 11 Shows a schematic diagram of a system for measuring the modulation transfer function;

[0101] - Figure 12 Shows a front view of a third example of an eyewear lens according to the present disclosure when projected onto a facial plane perpendicular to the main axis of the eyewear lens;

[0102] - Figure 13 Shows an enlarged view of a portion of an eyewear lens according to the third example;

[0103] - Figure 14 Shows a graphical representation of the modulation transfer function calculated in the first, second, and third zones of an eyewear lens according to the third example;

[0104] - Figure 15 Shows an enlarged view of a portion of an eyewear lens according to the fourth example;

[0105] - Figure 16 Shows a graphical representation of the modulation transfer function calculated in the first, second, and third zones of an eyewear lens according to the fourth example;

[0106] - Figure 17 Shows an enlarged view of a portion of an eyewear lens according to the fifth example;

[0107] - Figure 18 Is a graphical representation of the modulation transfer function calculated in the first, second, and third zones of an eyewear lens according to the fifth example;

[0108] - Figure 19 Shows an enlarged view of a portion of an eyewear lens according to the sixth example;

[0109] - Figure 20 Shows a graphical representation of the modulation transfer function calculated in the first and second zones of an eyewear lens according to the sixth example;

[0110] - Figure 21 Shows a graphical representation of the modulation transfer function calculated in the third and fourth zones of an ophthalmic lens according to the sixth example;

[0111] - Figure 22 Shows a graphical representation of the modulation transfer function calculated in the fifth and sixth zones of an ophthalmic lens according to the sixth example;

[0112] - Figure 23 Shows a computer-implemented method for determining an ophthalmic lens according to different examples disclosed above according to the present disclosure;

[0113] - Figure 24 Shows a method for manufacturing an ophthalmic lens according to different examples disclosed above according to the present disclosure.

[0114] Device

[0115] Figures 1 to 3 Shows the ophthalmic lens 10 according to the present disclosure.

[0116] The ophthalmic lens 10 is here a concave lens including a convex front surface 11 and a concave rear surface 12, but may alternatively be a meniscus lens or a plano-convex lens.

[0117] As Figure 1 shown, two similar ophthalmic lenses 10 (i.e., a right ophthalmic lens 10R and a left ophthalmic lens 10L) are intended to be mounted on a frame 20 of glasses so as to be positioned in front of the wearer's right eye E R and left eye E L ahead.

[0118] Figure 2 The shown ophthalmic lens 10 has two opposite optical surfaces: a front surface 11 facing the object side and a rear surface 12 closest to the wearer's eyes E R 、E L . The ophthalmic lens 10 presents a center V10, which is typically the optical center or the geometric center of the ophthalmic lens 10.

[0119] The ophthalmic lens 10 has an optical design including macroscopic optical components and microscopic optical components.

[0120] The macro-optical component of this optical design (also referred to as "macro-optical design") provides a macro-optical function that provides at least one global refractive power over most or all of the useful surface of the spectacle lens 10 to provide a refractive correction suitable for the refractive correction needs of the wearer's eyes under the wearing conditions. For example, such a macro-optical function is provided by the geometry of the front surface 11 or the back surface 12 or both surfaces, typically by adapting the radius of curvature of one or both surfaces of the spectacle lens. The refractive power of the spectacle lens 10 typically ranges between ±15 diopters.

[0121] The refractive power provided by the macro-optical design includes at least spherical power, and depending on the correction needs of the wearer determined by an eye care professional, it may also include cylindrical power, prism decentration power, in order to correct the visual defects of the wearer. Typically, the global refractive power corresponds to, for example, the refractive correction based on the prescription of the wearer under standard wearing conditions. For example, the prescription of a refractive error wearer includes a dioptric value and an astigmatic value, and the astigmatic value includes cylindrical power and the axis for distance and / or near vision.

[0122] The spectacle lens defined according to this disclosure is suitable for correcting the vision of an individual (i.e., the wearer) under wearing conditions. The wearing conditions should be understood as the position of the spectacle lens 10 in the spectacle frame 20 worn in front of the wearer's eyes. The wearing conditions are defined according to the physiological parameters of the wearer or the geometric parameters of the spectacle frame 20 when the wearer wears the spectacle frame 20. The wearing conditions include the tilt angle, the corneal-to-lens distance, the pupil-to-cornea distance, the eye rotation center (ERC) to pupil distance, and the wrap angle. Figure 1 A pair of spectacle lenses labeled 10R and 10L is shown. The spectacle lens 10R is worn in front of the right eye E of the wearer R and the spectacle lens 10L is worn in front of the left eye E of the wearer L in front.

[0123] Examples of standard wearing conditions can be defined by a tilt angle of -8° for adults or between 0° and 5° for children, a corneal-to-lens distance of 12 mm, a pupil-to-cornea distance of 2 mm, an ERC-to-pupil distance of 11.5 mm, and a wrap angle of 0°.

[0124] The tilt angle is the angle in the vertical plane between the normal to the back surface 12 of the spectacle lens 10 and the visual axis (axis A) of the eye at the first eye position, which is defined as the horizontal direction, when the wearer looks straight ahead at infinity.

[0125] The corneal-to-lens distance is the distance along the visual axis of the eye E at the first eye position between the cornea and the back surface 12 of the spectacle lens 10.

[0126] The wrap angle of the spectacle frame 20 is the angle in the horizontal plane between the normal to the back surface 12 of the lens at its center and the sagittal plane.

[0127] The micro-optical components of the optical design (also referred to as "micro-optical design") of the spectacle lens 10 are made up of a number of micro-optical elements 13 arranged on at least one of the front and back surfaces of the lens, preferably on the convex front surface.

[0128] Each micro-optical element has its own optical function and has a small size of less than 2 mm, preferably less than 1 mm. Each micro-optical element includes, for example, a micro-lens, a π-Fresnel lens, a prism, a diffuser, a beam splitter or a diffraction grating. The micro-optical elements are typically formed by lithography, holography, molding, machining or encapsulation.

[0129] This arrangement of all the micro-optical elements provides a micro-optical function that is different from and supplementary to the macro-optical function. Thus, the global optical function of the spectacle lens 10 is the sum of the macro-optical function and the micro-optical function provided respectively by its macro-optical components and micro-optical components of its optical design. The micro-optical function of the spectacle lens 10 is the optical function provided by the spectacle lens 10 in the absence of its macro-optical design, i.e., without any global refractive power over most or all of the useful radial width of the spectacle lens 10. The macro-optical function of the spectacle lens 10 is the optical function provided by the spectacle lens 10 in the absence of its micro-optical design, i.e., without any micro-optical elements.

[0130] Each micro-optical element provides a refraction, diffraction or diffusion function.

[0131] In an embodiment, some or all of the micro-optical elements are refractive micro-optical elements. Each refractive micro-optical element may include a single-focus or bifocal spherical diopter.

[0132] In another embodiment, some or all of the micro-optical elements are diffractive. Each diffractive micro-optical element includes, for example, a diffractive π-Fresnel microlens. The diffractive π-Fresnel microlens has a phase function that exhibits a phase jump of π at the nominal wavelength λ0. For human eye vision applications, the wavelength λ0 is preferably 550 nm. The diffractive π-Fresnel microlens presents an optical axis passing through the optical center of the microlens. The microlens with a diffractive π-Fresnel micro-optical element diffracts mainly in two diffraction orders associated with two diopters P0(λ0) and P1(λ0). Thus, when receiving collimated light, the microlens focuses the light on two different regions on its axis.

[0133] For example, the diopter P0(λ0) is in the range of the spherical-compound surface power of the predetermined refractive power of the spectacle lens (e.g., obtained from the wearer's prescription) + / - 0.12 diopters.

[0134] According to an embodiment, the absolute value of the diopter P1(λ0) is between 1 diopter and 10 diopters. Preferably, the diopter P1(λ0) is between ±2 diopters and ±6 diopters.

[0135] As an alternative, some or all of the micro-optical elements are diffusive micro-optical elements. Each diffusive micro-optical element includes a diffusive micro-optical element that scatters light. For example, collimated light is scattered in a cone with an apex angle in the range of + / -1° to + / -40°. In an example, the diffusive micro-optical element is adapted to scatter light locally, i.e., at the intersection between a given micro-optical element and the wavefront arriving at the given micro-optical element. The micro-optical element having a diffusive optical function may be similar to the micro-optical element described in the document US10302962.

[0136] Each micro-optical element 13 has a micro-optical axis Cm. Typically, the micro-optical axis Cm of a given micro-optical element corresponds to the axis of rotation or the optical axis of the micro-optical element.

[0137] In the example shown, all the micro-optical elements 13 are located on the front face 11 of the spectacle lens 10.

[0138] Alternatively, some or all of the micro-optical elements may be located on the back face 12 of the spectacle lens 10 or on both the front face 11 and the back face 12.

[0139] Alternatively, some or all of the micro-optical elements may be embedded in the thickness between the front and back faces of the spectacle lens.

[0140] In practice, the micro-optical elements are formed as a single integral part with the rest of the spectacle lens (typically by injection molding, compression molding, rolling or machining), or alternatively, are formed on a film (formed as a patch or laminated) applied to one or both of the front face 11 and the back face 12 of the spectacle lens 10.

[0141] The spectacle lens 10 is arranged to control myopia progression.

[0142] In a non-limiting example, the arrangement of the micro-optical elements 13 of the spectacle lens 10 has optical characteristics that provide a myopia evolution control function for the wearer's eyes. In other words, the micro-optical elements 13 of the spectacle lens 10 have each optical characteristic adapted to control myopia progression.

[0143] According to an embodiment, the arrangement of the micro-optical elements of the spectacle lens is adapted to provide a specific defocus spatial distribution, also known as the defocus effect. To this end, the micro-optical elements include microlenses that provide a refractive power different from that of the macroscopic optical components of the optical design of the spectacle lens 10.

[0144] AsFigure 3 As shown, the spectacle lens 10 includes an ophthalmic lens center V10, which is typically the optical center or geometric center of the spectacle lens 10. The spectacle lens 10 is also defined as having a first orthogonal reference system (V10, x, y, z), for which the transverse axis z passes through the eye rotation center ERC of the wearer's eye E.

[0145] As Figure 3 Shown, the central visual fixation direction is defined by two angles (αC, βC) representing the rotation of the eye from the primary fixation direction. More precisely, the angles βC and αC represent the horizontal and vertical rotation angles applied at the eye rotation center ERC in the Fick system in order to move the eye from the primary fixation reference axis to the eye fixation axis. The third torsion of the eye derived from these two angles is applied such that the eye fixation axis complies with Listing's law. Figure 3 An example of the angles αC and βC with respect to the eye rotation center ERC and the spectacle lens 10 is shown. The central visual fixation direction can be represented by a line passing through the eye rotation center ERC.

[0146] The angle αC is defined in the vertical plane passing through the eye rotation center ERC, while the angle βC is defined in the horizontal plane passing through the eye rotation center ERC. The angle αC is defined as positive when the wearer's eye looks down and negative when the wearer's eye looks up. The angle βC is defined as positive when the wearer's eye looks towards the nose and negative when the wearer's eye looks towards the temple.

[0147] In the present disclosure, different zones of the spectacle lens will be presented. Generally, the different parameters associated with these different zones are determined or defined based on the projection of these zones onto a plane perpendicular to the optical axis of the spectacle lens.

[0148] First example

[0149] Will be combined with Figures 4 to 6 to disclose a first example of the spectacle lens 10 according to the present disclosure.

[0150] Figure 4 The shown spectacle lens 10 includes a central zone 14 that does not have any micro-optical elements and has a circular profile 17 (e.g., with a radius of 4.5 mm) centered on the ophthalmic center V10 of the spectacle lens 10. In a variant, the profile of the central zone 14 can have another shape, such as a polygon (especially a hexagon) or an elliptical shape.

[0151] The spectacle lens 10 further includes a first peripheral zone 15 arranged around the central zone 14 and a second peripheral zone 16 arranged around the first peripheral zone 15.

[0152] In Figure 4 the example shown, the arrangement of the micro-optical elements 13 of the spectacle lens 10 is provided on a first peripheral zone 15. The second peripheral zone 16 does not have any micro-optical elements.

[0153] The first or second "peripheral zone" means a specific area of the spectacle lens.

[0154] The second peripheral zone 16 of the spectacle lens 10 is arranged to be fixed to the spectacle frame 20.

[0155] The central zone 14, the first peripheral zone 15 and the second peripheral zone 16 are concentric. They are centered on the optical center of the spectacle lens 10. The first peripheral zone 15 surrounds the central zone 14 and is delimited internally by the circular contour 17 of the central zone 14 and externally by the circular contour 18. The second peripheral zone 16 surrounds the first peripheral zone 15 and is delimited internally by the circular contour 18 of the first peripheral zone 15 and externally by the circular contour 19, which may coincide with the outer edge of the spectacle lens 10, as Figure 4 shown.

[0156] In a non-limiting example, the circular contour 17 (which is the outer contour of the central zone 14 and the inner contour of the first peripheral zone 15) presents a radius between 2.00 mm and 5 mm, preferably between 3 and 4.5 mm.

[0157] Preferably, the contour 18 (which is the outer contour of the first peripheral zone 15 and the inner contour of the second peripheral zone 16) presents a diameter between 40.0 mm and 80.0 mm, preferably between 50.00 mm and 70.0 mm. For example, in this embodiment, the example is 60.0 mm. The circular outer contour 19 of the second peripheral zone 16 (which is the outer edge of the spectacle lens) presents a diameter between 80 mm and 100.00 mm, preferably 70.00 mm, as shown in the example presented.

[0158] Of course, although the contour 17 of the central zone 14, the contour 18 of the first peripheral zone 15 and the contour 19 of the second peripheral zone 16 are circular in this example, they may present another shape, such as a polygon (especially a hexagon) or an elliptical shape. Typically, the form of the contours of the contour 17 of the central zone 14, the contour 18 of the first peripheral zone 15 and the contour 19 of the second peripheral zone 16 depends on the form of the spectacle lens 10.

[0159] In Figure 4 and Figure 5 the example shown, the micro-optical elements 13 are arranged in concentric circles with adjacent micro-optical elements 13 centered on the center of the central zone 14, the center of which coincides with the center V10 of the spectacle lens 10. Each circle is spaced between 1.0 mm and 1.5 mm from each adjacent circle. InFigure 4 In this case, the spectacle lens 10 includes five concentric circles of micro-optical elements.

[0160] In this embodiment, the micro-optical elements of the spectacle lens 10 are microlenses and are all the same. Here, each micro-optical element 13 exhibits an average focal power of approximately +4.5 diopters and is an aspherical micro-optical element. Each micro-optical element has a diameter of approximately 1.12 mm and a radius of curvature of 131.3 mm. The average focal power of the micro-optical elements is supplementary to the prescription correction of the spectacle lens 10.

[0161] The average spherical focal power means that the spherical diopter of the micro-optical elements can vary on the surface of the spectacle lens 10. For example, in this embodiment, the micro-optical elements belonging to the same circle of micro-optical elements have the same average refractive power, while the micro-optical elements belonging to different circles of micro-optical elements can have different average refractive powers.

[0162] In Figure 4 and Figure 5 In this case, the first peripheral zone 15 includes a first zone 21 having a circular shape with a diameter of 4 mm.

[0163] The first zone 21 includes a part or some of the micro-optical elements of the first peripheral zone 15. Typically, the micro-optical elements included in the first zone 21 are arranged to cover at least 30% of the total area of the first zone 21. Here, the density of the micro-optical elements in the first zone 21 is higher than 31%.

[0164] The first zone has an outer contour 22 presenting a geometric center U21. Typically, the geometric center U21 of the first zone 21 is spaced apart from the ophthalmic center V10 of the spectacle lens 10 by at least 4 mm. Here, the geometric center U 21 is spaced apart from the ophthalmic center V10 of the spectacle lens 10 by 9.8 mm. Hereinafter, the first zone 21 is defined by an orthogonal reference system (U 21 , x 21 , y 21 ).

[0165] In the present disclosure, the distance between the ophthalmic center V10 of the spectacle lens 10 and the geometric center of any zone defined in the first peripheral zone 15 is referred to as the eccentricity.

[0166] In Figure 4 and Figure 5 In this case, the geometric center U 21 is centered on the optical axis Cm of one of the micro-optical elements included in the first zone 21. Here, the geometric center U 21Centered on the micro-optical axis Cma of the micro-optical element 13a arranged on the third circle of the spectacle lens 10 starting from the center V10 of the spectacle lens 10. Of course, in a variant, the first zone 21 can be centered on any micro-optical element of the first peripheral zone 15 of the spectacle lens 10.

[0167] The first peripheral zone 15 further includes a second zone 23 having a circular shape with a diameter of 4 mm.

[0168] The second zone 23 includes a part or some of the micro-optical elements of the first peripheral zone 15. Typically, the micro-optical elements included in the second zone 23 are arranged to cover at least 30% of the total area of the first zone. Here, the density of the micro-optical elements in the second zone 23 is higher than 40%. The positions of the micro-optical elements included in the second zone 23 are different from the positions of the micro-optical elements included in the first zone 21.

[0169] The second zone 23 has an outer contour 24 presenting a geometric center U 23 Typically, the geometric center U 23 of the second zone 23 is spaced apart from the ophthalmic center V10 of the spectacle lens 10 by at least 4 mm. Here, the geometric center U 23 of the second zone 23 is spaced apart from the ophthalmic center V10 of the spectacle lens 10 by 8.65 mm. Hereinafter, the second zone 23 is defined by an orthogonal reference system (U 23 , x 23 , y 23 ).

[0170] The geometric center U 23 of the second zone 23 is centered on a point C located on a part of the first peripheral zone 15 without micro-optical elements. Typically, the geometric center U 23 is centered on a point C located at the middle of two adjacent circles of micro-optical elements, here at the middle of the second circle of micro-optical elements and the third circle of micro-optical elements starting from the center V10 of the spectacle lens 10. Thus, the geometric center U 23 of the second zone 23 is spaced apart from the geometric center U 21 of the first zone 21 by at least 0.5 mm, here by at least 1.0 mm. Typically, in this example, the axis y 21 of the first zone 21 is spaced apart from the axis y 23 of the second zone 23 by at least 1.0 mm.

[0171] The technical features of the first zone 21 and the second zone 23 will be disclosed with reference Figure 6 and Figure 11 . The technical features of the first zone 21 and the second zone 23 are defined by their modulation transfer functions.

[0172] In the present disclosure, the modulation transfer function gives the percentage of the contrast transferred in the entire considered area of the spectacle lens 10, which is a function of the spatial frequency (expressed in cycles / degree). This will be explained above in Figure 3 and Figure 11 the calculation of the modulation transfer function is explained.

[0173] The modulation transfer function of the example is calculated on the first zone 21 and the second zone 23. In the following disclosure, the modulation transfer function can be directly measured using an optical system S as described in Figure 11 above.

[0174] The system S includes a light capture device C, a light emitting device I configured to generate a collimated beam CB, and an aperture P that is positioned on or very close to the spectacle lens 10 and serves as a diaphragm that defines the first zone 21 or the second zone 23 on which the modulation transfer function is measured. Only the light rays of the collimated beam that pass through the aperture P reach the light capture device. Here, the aperture P is positioned on or in front of the front face F1 of the spectacle lens 10. In a variant of the system S, the aperture P can be positioned on or behind the rear face F2 of the spectacle lens 10.

[0175] In Figure 11 the spectacle lens 10 is positioned between the light emitting device I and the light capture device C. The light emitting device I, the aperture P, the spectacle lens 10, and the light capture device C are aligned.

[0176] The light source I is a laser source that emits within the monochromatic or polychromatic visible spectrum between 400 nm and 780 nm (λ), and its high quality factor M 2 is close to 1. Advantageously, the wavelength of the collimated beam emitted by the light source I is between 540 and 560 nm, preferably 550 nm.

[0177] The collimated beam CB is generated by the light emitting device I along an axis A that is clearly perpendicular to the plane orthogonal to the surface of the spectacle lens 10 and centered on the geometric center U 21 of the first zone 21 or 23 the geometric center U Figure 11 of the second zone 23. As shown in

[0178] In Figure 11 the spectacle lens 10 can be moved along a plane perpendicular to the axis A to select different specific zones of the spectacle lens 10 in order to measure the modulation transfer function on different parts of the spectacle lens 10. Here, typically the first zone 21 is selected first, and then the second zone 23 is selected.

[0179] When the eyeglass lens 10 is irradiated with a collimated light beam, the distance between the light-emitting device I and the eyeglass lens 10 can be varied without substantially changing the determined modulation transfer function.

[0180] The light-trapping device C includes at least a lens L and an image sensor Sb. The position of the lens L and the position of the sensor Sb can be adjusted to take into account different analysis planes, for example to scan the eyeglass lens 10 along the axis z (horizontal axis).

[0181] The sensor Sb is configured to capture an image obtained from the collimated light beam generated by the light source I and passing through the eyeglass lens 10. Based on the captured image, the point spread function (PSF) of the first zone 21 or the second zone 21 of the eyeglass lens 10 can be determined, and then the modulation transfer function can be determined by calculating the Fourier transform of the point spread function.

[0182] In another embodiment, the modulation transfer function of the first zone 21 or the second zone 23 of the eyeglass lens 10 is determined by measuring the surface unevenness of the surface of the eyeglass lens 10 including the micro-optical elements (here, the front surface 11 of the eyeglass lens 10). Typically, the surface unevenness of the surface can be determined using an interferometer. The difference in optical path length between two points belonging to the selected zone (the first zone 21 or the second zone 23) is determined. To this end, the optical path difference (OPD) of each point on the surface of the eyeglass lens 10 can be obtained by multiplying the surface unevenness labeled Z(x,y) by the refractive index change Δn, which corresponds to the refractive index difference between two materials on both sides of the surface having the micro-optical elements. In a variant, the point spread function in different planes of the eyeglass lens 10 can be calculated and then the modulation transfer function can be calculated.

[0183] In a variant, the simulated modulation transfer function is estimated before the manufacturing process of the eyeglass lens 10. In this case, the first zone 21 or the second zone 23 of the eyeglass lens 10 is selected by positioning the simulated aperture P' (i.e., the diaphragm) on the optical design of the eyeglass lens 10 or by projecting the pupil P' of the eye onto the eyeglass lens 10. In both cases, the diaphragm P' or the projection has a center centered on the potential central visual fixation direction of the wearer (for example, the potential central visual fixation of the wearer is between 0 degrees and 20 degrees defined by two radial directions (axes x, y) of the eyeglass lens 10). As Figure 3 shown, the aperture P' is centered on the point that discloses the central visual fixation direction defined by two angles (αC, βC). The aperture P' has a shape that coincides with the shape of the first zone 21 or the second zone 23. Thus, when estimating the modulation transfer function through the first zone 21, the aperture P' presents a geometric center that coincides with the geometric center U of the first zone 21, and when estimating the modulation transfer function through the second zone 23, the aperture P' presents a geometric center that coincides with the geometric center U of the second zone 23. 21 coincides, and when estimating the modulation transfer function through the second zone 23, the aperture P' presents a geometric center that coincides with the geometric center U of the second zone 23. 23Coincident geometric centers.

[0184] In the present disclosure, the diaphragm P or the simulated aperture P' has a center centered on the potential central visual fixation of the wearer (e.g., the potential central visual fixation of the wearer is between 0 degrees and 20 degrees defined in two directions (axis x and axis y) from the spectacle lens 10). Typically, such an angle corresponds to a point spaced between 0 mm and 30 mm from the center V10 of the spectacle lens 10, and this distance typically corresponds to the fixation position in the spectacle lens 10 during reading with a single vision lens.

[0185] Regarding the method explained above, the field of view of the spectacle lens 10 can be scanned spatially by using the simulated aperture P' or the projection P' defined for several central visual fixation directions, and the modulation transfer function is calculated on different specific regions (here the first region 21 and the second region 23) of the simulated spectacle lens 10. It allows the modulation transfer function to be measured for different eccentricities of the visual fixation direction. In the present disclosure, the aperture P' defining the specific region (here the first region 21 or the second region 23) has a circular shape with a diameter between 4 mm and 8 mm to simulate the variation of the normal pupil size of the wearer, especially for different simulated lighting environments.

[0186] The density of the micro-optical elements included in the selected part via the aperture (here the first region 21 or the second region 23) is at least 30%, typically between 60% and 100% when the micro-optical elements are continuous, and between 30% and 50% when the micro-optical elements are not continuous.

[0187] Calculate the point spread function (PSF) that will give the degree of diffusion (blur) in the image of a point object over the entire first region 21 and second region 23 of the spectacle lens 10. Through simulations known to those skilled in the art, a point source emitting in a monochromatic or polychromatic visible spectrum centered on the center V10 of the spectacle lens 10, in the form of between 400 nm and 780 nm (λ), typically an ideal Gaussian (M2 = 1), is used to calculate the point spread function. For each wavelength λ, the point spread function is calculated as the squared amplitude of the inverse Fourier transform of the aperture function P'(x,y), which is defined as P'(x,y) = A(x,y)exp(ikOPD(x,y)), simulating the simulated aperture P', and where k is the wave number (2π / λ); λ is the wavelength of the point source, preferably equal to 550 nm; A(x,y) is the amplitude of the pupil diameter function, equal to 1 for (x,y) within the pupil (defined by the diameter and the center position) and equal to 0 outside the pupil, and OPD(x,y) corresponds to the optical path difference provided by the spectacle lens 10. Then, the modulation transfer function is calculated based on the Fourier transform of the calculated point spread function.

[0188] InFigure 6 In the example shown, the modulation transfer function is calculated or measured at a wavelength of 550 nm and in the first zone 21 and the second zone 23, respectively. As explained below, when the central zone 14 of the spectacle lens 10 does not have any micro-optical elements, the modulation transfer function can be estimated for different decentrations (e.g., decentrations between 4 mm and 30 mm). If the central zone 14 of the spectacle lens 10 includes micro-optical elements, the modulation transfer function can be further estimated for lower decentrations, e.g., between 0 (central fixation direction) and 4 mm.

[0189] In the present disclosure, although the zones are defined in a specific part of the first peripheral zone 15, it is obvious that the zones can be defined in other parts of the spectacle lens 10 as long as the part includes micro-optical elements.

[0190] Figure 6 A graphical representation of the modulation transfer function calculated over the entire first zone 21 and second zone 23 of the first peripheral zone 15 of the spectacle lens 10 is shown.

[0191] In the present disclosure, the modulation transfer function is calculated for spatial frequencies between 0 cycles / degree and 60 cycles / degree. Typically, spatial frequencies between 0 and 30 cycles / degree are involved in reading tasks, especially spatial frequencies between 0 and 5 cycles / degree, 5 and 10 cycles / degree, 10 and 15 cycles / degree, 15 and 20 cycles / degree, and 20 and 30 cycles / degree. In contrast, the visual acuity of the wearer is also involved with spatial frequencies between 0 and 7 cycles / degree. Generally, low spatial frequencies will have an impact on the myopia control level, while high spatial frequencies will have an impact on visual acuity.

[0192] Figure 6 Shown on the same graph are:

[0193] - the horizontal axis curve 1001 of the modulation transfer function calculated over the entire first zone 21 of the spectacle lens 10,

[0194] - the vertical axis curve 1002 of the modulation transfer function calculated over the entire first zone 21 of the spectacle lens 10, and

[0195] - the horizontal axis curve 1003 of the modulation transfer function calculated over the entire second zone 23 of the first peripheral zone 15 of the spectacle lens 10, and

[0196] - the vertical axis curve 1004 of the modulation transfer function calculated over the entire second zone 23 of the first peripheral zone 15 of the spectacle lens 10.

[0197] In the present disclosure, the horizontal axis curve of the modulation transfer function corresponds to the change in the modulation transfer function estimated or calculated along the horizontal axis x of the spectacle lens 10. Hereinafter, this curve is referred to as the horizontal modulation transfer function. Typically, the horizontal modulation transfer function corresponds to a cross-sectional view of the Fourier transform of the point spread function along the horizontal axis x of the spectacle lens 10. In contrast, the vertical axis curve of the modulation transfer function corresponds to the change in the modulation transfer function calculated or estimated along the vertical axis y of the spectacle lens 10. Hereinafter, this curve is referred to as the vertical modulation transfer function. The vertical modulation transfer function corresponds to a cross-sectional view of the Fourier transform of the point spread function along the vertical axis y of the spectacle lens 10.

[0198] In Figure 6 the horizontal modulation transfer function 1001 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 0 and 5 cycles / degree.

[0199] The horizontal modulation transfer function 1003 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55, 0.50 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 0 and 5 cycles / degree.

[0200] It can also be seen that the modulation transfer function 1001 and the modulation transfer function 1003 include values higher than 0.3 in a spatial frequency range between 15 and 20 cycles / degree.

[0201] Hereinafter, the term "modulation rate" refers to the amplitude of the modulation transfer function. Thus, hereinafter, the modulation rate is defined according to the values of the considered modulation transfer function in a given spatial frequency range.

[0202] The horizontal modulation transfer function 1001 includes a higher modulation rate than the horizontal transfer function 1003 in a spatial frequency range between 2 cycles / degree and 7 cycles / degree. Additionally, the horizontal modulation transfer function 1001 includes a higher modulation rate than the horizontal transfer function 1003 in spatial frequency ranges between 10 cycles / degree and 20 cycles / degree, and between 20 cycles / degree and 30 cycles / degree. This means that the horizontal modulation transfer function 1001 includes a higher modulation rate than the horizontal transfer function 1003 in a spatial frequency range between 2 cycles / degree and 30 cycles / degree.

[0203] Typically, in Figure 6 the modulation rate of the horizontal modulation transfer function 1001:

[0204] - The modulation rate of the vertical modulation transfer function 1002 is less than 15% different from the modulation rate of the horizontal modulation transfer function 1003 over a spatial frequency range between 0 and 5 cycles / degree;

[0205] - The modulation rate of the vertical modulation transfer function 1002 is less than 35% (here 31%) different from the modulation rate of the horizontal modulation transfer function 1003 over a spatial frequency range between 5 and 10 cycles / degree;

[0206] - The modulation rate of the vertical modulation transfer function 1002 is less than 30% different from the modulation rate of the horizontal modulation transfer function 1003 over a spatial frequency range between 10 and 15 cycles / degree;

[0207] - The modulation rate of the vertical modulation transfer function 1002 is less than 30% different from the modulation rate of the horizontal modulation transfer function 1003 over a spatial frequency range between 15 and 20 cycles / degree;

[0208] - The modulation rate of the vertical modulation transfer function 1002 is less than 15% different from the modulation rate of the horizontal modulation transfer function 1003 over a spatial frequency range between 20 and 30 cycles / degree.

[0209] For a predetermined spatial frequency range, the value of the first modulation transfer function and the value of the second modulation transfer function being less than x% different can mean that for each frequency or each sub - range of the predetermined range, the absolute value of the ratio is less than x / 100.

[0210] The numerator of the ratio is the absolute value of the difference between:

[0211] - A first value, which is the value of the modulation transfer function of the first region and is associated with the frequency or sub - range, and

[0212] - A second value, which is the value of the modulation transfer function of the second region and is associated with the sub - range,

[0213] And the denominator of the ratio is the first value or the second value. Preferably, the denominator includes the higher value between the first value and the second value.

[0214] The modulation rate of the horizontal modulation transfer function 1001 is more than 10% different from the modulation rate of the horizontal modulation transfer function 1003 over spatial frequency ranges between 5 and 15 cycles / degree and between 15 and 20 cycles / degree.

[0215] At Figure 6 the vertical modulation transfer function 1002 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65 over a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0216] The vertical modulation transfer function 1004 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55, 0.50, 0.45 over a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0217] It can also be seen that the modulation transfer function 1001 and the modulation transfer function 1003 include values higher than 0.3 over a spatial frequency range between 15 and 20 cycles / degree.

[0218] The vertical modulation transfer function 1002 includes a modulation rate higher than that of the vertical transfer function 1004 over a spatial frequency range between 2 cycles / degree and 7 cycles / degree. Additionally, the vertical modulation transfer function 1002 includes a modulation rate higher than that of the vertical transfer function 1004 over spatial frequency ranges between 10 cycles / degree and 20 cycles / degree, and between 20 cycles / degree and 30 cycles / degree. This means that the vertical modulation transfer function 1002 includes a modulation rate higher than that of the vertical transfer function 1004 over a spatial frequency range between 2 cycles / degree and 30 cycles / degree.

[0219] Typically, on Figure 6 the modulation rate of the vertical modulation transfer function 1002:

[0220] - differs from the modulation rate of the vertical modulation transfer function 1004 by less than 25% over a spatial frequency range between 0 and 5 cycles / degree;

[0221] - differs from the modulation rate of the vertical modulation transfer function 1004 by less than 30% over a spatial frequency range between 5 and 10 cycles / degree;

[0222] - differs from the modulation rate of the vertical modulation transfer function 1004 by less than 30% over a spatial frequency range between 10 and 15 cycles / degree;

[0223] - differs from the modulation rate of the vertical modulation transfer function 1004 by less than 30% over a spatial frequency range between 15 and 20 cycles / degree;

[0224] - differs from the modulation rate of the vertical modulation transfer function 1004 by less than 20% over a spatial frequency range between 20 and 30 cycles / degree.

[0225] Therefore, the modulation rate of the vertical modulation transfer function 1002 differs from the modulation rate of the vertical modulation transfer function 1004 by more than 10% over spatial frequency ranges between 5 and 15 cycles / degree and between 15 and 20 cycles / degree.

[0226] Second example

[0227] will be combined Figures 7 to 10 to disclose a second example of the spectacle lens 30 according to the present disclosure.

[0228] In this embodiment, the spectacle lens 30 includes a central region 14, a first peripheral region 15, and a second peripheral region 16, as disclosed in Figure 4 the previous embodiment shown. In addition, the spectacle lens 30 includes an arrangement of micro-optical elements positioned in the first peripheral region 15, which arrangement is similar to the arrangement of micro-optical elements explained above in Figure 4 . Similar to Figure 4 the spectacle lens 10 shown, the spectacle lens 30 includes the first region 21 and the second region 23 as described above. Therefore, only the differences from the Figure 4 and Figure 5 shown embodiments will be described.

[0229] Figure 7 and Figure 8 the spectacle lens 30 shown includes a third region 31 arranged in the first peripheral region 15. The third region 31 has a circular shape and a diameter of 6 mm.

[0230] The third region 31 includes a part of the micro-optical elements of the first peripheral region 15. Typically, the micro-optical elements included in the third region 31 are arranged to cover at least 30% of the total area of the third region 31. Here, the density of the micro-optical elements in the third region 31 is higher than 41%.

[0231] The third region 31 has an outer contour 32, which presents a geometric center centered on the micro-optical axis Cm of one of the micro-optical elements included in the third region 31. Here, the geometric center of the third region 31 coincides with the geometric center U 21 of the first region 21. In other words, this means that the first region 21 and the third region 31 are concentric. Therefore, the third region 31 is defined by an orthogonal reference system (U 21 , x 21 , y 21 ).

[0232] The first peripheral region 15 further includes a fourth region 33, which has a circular shape with a diameter of 6 mm.

[0233] The fourth region 33 includes a part of the micro-optical elements of the first peripheral region 15. Typically, the micro-optical elements included in the fourth region 33 are arranged to cover at least 30% of the total area of the first region. Here, the density of the micro-optical elements in the fourth region 33 is higher than 31%.

[0234] The fourth region 33 has an outer contour 34 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the fourth region 33. Here, the geometric center of the fourth region 33 coincides with the geometric center U of the second region 23 23 . This means that the second region 23 and the fourth region 33 are concentric. Therefore, the fourth region 33 is defined by an orthogonal reference system (U 23 , x 23 , y 23 ).

[0235] The first peripheral region 15 further includes a fifth region 35 having a circular shape with a diameter of 8 mm.

[0236] The fifth region 35 includes a part of the micro-optical elements of the first peripheral region 15. Typically, the micro-optical elements included in the fifth region 35 are arranged to cover at least 30% of the total area of the fifth region. Here, the density of the micro-optical elements in the fifth region 35 is higher than 35%.

[0237] The fifth region 35 has an outer contour 36 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the fifth region 35. Here, the geometric center of the fifth region 35 coincides with the geometric center U of the first region 21 21 . This means that the third region 21 and the fifth region 35 are concentric. Therefore, the fifth region 35 is defined by an orthogonal reference system (U 21 , x 21 , y 21 ).

[0238] The first peripheral region 15 further includes a sixth region 37 having a circular shape with a diameter of 8 mm.

[0239] The sixth region 37 includes a part of the micro-optical elements of the first peripheral region 15. Typically, the micro-optical elements included in the sixth region 37 are arranged to cover at least 30% of the total area of the sixth region. Here, the density of the micro-optical elements in the fifth region 37 is higher than 36%.

[0240] The sixth region 37 has an outer contour 38 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the sixth region 37. Here, the geometric center of the sixth region 37 coincides with the geometric center U of the second region 23 23 . This means that the second region 23 and the sixth region 37 are concentric. Therefore, the sixth region 37 is defined by an orthogonal reference system (U 23 , x 23 , y 23 ).

[0241] The technical features of the third region 31, the fourth region 33, the fifth region 35 and the sixth region 37 will be disclosed with reference Figures 9 to 10 .

[0242] Figure 9 Shows a graphical representation of the modulation transfer function calculated over the entire third zone 31 and fourth zone 33 of the first peripheral zone 15 of an ophthalmic lens.

[0243] Figure 9 Shown on the same graph are:

[0244] - The horizontal axis curve 1005 of the modulation transfer function calculated over the entire third zone 31 of the ophthalmic lens 10 (hereinafter referred to as the horizontal modulation function 1005),

[0245] - The vertical axis curve 1006 of the modulation transfer function calculated over the entire third zone 31 of the ophthalmic lens 10 (hereinafter referred to as the vertical modulation function 1006),

[0246] - The horizontal axis curve 1007 of the modulation transfer function calculated over the entire fourth zone 33 of the first peripheral zone 15 of the ophthalmic lens 10 (hereinafter referred to as the horizontal modulation function 1007), and

[0247] - The vertical axis curve 1008 of the modulation transfer function calculated over the entire fourth zone 33 of the first peripheral zone 15 of the ophthalmic lens 10 (hereinafter referred to as the vertical modulation function 1008).

[0248] At Figure 9 the horizontal modulation transfer function 1005 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55 over a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0249] The horizontal modulation transfer function 1007 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.57 over a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0250] It can also be seen that the horizontal modulation transfer function 1005 and the horizontal modulation transfer function 1007 include values higher than 0.3 (higher than 0.35 herein) over a spatial frequency range between 15 and 20 cycles / degree.

[0251] The horizontal modulation transfer function 1007 includes a modulation rate higher than that of the horizontal transfer function 1005 in the spatial frequency range between 2 cycles / degree and 7 cycles / degree. Additionally, the horizontal modulation transfer function 1007 includes a modulation rate higher than that of the horizontal transfer function 1005 in the spatial frequency ranges between 10 cycles / degree and 20 cycles / degree, and between 20 cycles / degree and 25 cycles / degree. This means that the horizontal modulation transfer function 1007 includes a modulation rate higher than that of the horizontal transfer function 1005 in the spatial frequency range between 2 cycles / degree and 25 cycles / degree. For spatial frequencies between 24 and 26 cycles / degree, the two horizontal transfer functions 1005, 1007 exhibit the same modulation rate with a value between 0.33 and 0.28. The horizontal modulation transfer function 1007 includes a modulation rate lower than that of the horizontal transfer function 1005 in the spatial frequency range between 27 and 30 cycles / degree.

[0252] Typically, on Figure 9 the modulation rate of the horizontal modulation transfer function 1007:

[0253] - differs from the modulation rate of the horizontal modulation transfer function 1005 by less than 10% (here 7%) in the spatial frequency range between 0 and 5 cycles / degree;

[0254] - differs from the modulation rate of the horizontal modulation transfer function 1005 by less than 12% in the spatial frequency range between 5 and 10 cycles / degree;

[0255] - differs from the modulation rate of the horizontal modulation transfer function 1005 by less than 10% in the spatial frequency range between 10 and 15 cycles / degree;

[0256] - differs from the modulation rate of the horizontal modulation transfer function 1005 by less than 10% in the spatial frequency range between 15 and 20 cycles / degree;

[0257] - differs from the modulation rate of the horizontal modulation transfer function 1005 by less than 10% in the spatial frequency range between 20 and 30 cycles / degree.

[0258] Therefore, the modulation rates of the horizontal modulation transfer functions 1005, 1007 are almost the same in the spatial frequency range between 0 and 30 cycles / degree, with a tolerance of less than 10%. Specifically, the modulation rates of the horizontal modulation transfer functions 1005, 1007 are almost the same, with a tolerance:

[0259] - less than 10% in the spatial frequency range between 2 and 5 cycles / degree;

[0260] - less than 12% in the spatial frequency range between 5 and 10 cycles / degree;

[0261] - less than 10% in the spatial frequency range between 10 and 15 cycles / degree;

[0262] - less than 10% in the spatial frequency range between 15 and 20 cycles / degree;

[0263] - less than 12% in the spatial frequency range between 20 and 30 cycles / degree.

[0264] Therefore, the modulation rates presented by the horizontal modulation transfer functions 1005 and 1007 of the third region 31 and the fourth region 33 are closer than those of the horizontal modulation transfer functions 1001 and 1003 of the first region 21 and the second region 23.

[0265] The horizontal modulation transfer functions 1005 and 1007 of the third region 31 and the fourth region 33 are almost the same.

[0266] In Figure 9 , the vertical modulation transfer function 1006 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65 in the spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0267] The vertical modulation transfer function 1008 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55, 0.50, 0.45 in the spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0268] It can also be seen that the vertical modulation transfer function 1006 and the vertical modulation transfer function 1008 each have a value higher than 0.3 (higher than 0.35 here) in the spatial frequency range between 15 and 20 cycles / degree.

[0269] The modulation rate included in the vertical modulation transfer function 1008 in the spatial frequency range between 2 cycles / degree and 7 cycles / degree is higher than that of the vertical transfer function 1006. In addition, the modulation rate included in the vertical modulation transfer function 1008 in the spatial frequency ranges between 10 cycles / degree and 20 cycles / degree, and between 20 cycles / degree and 30 cycles / degree is higher than that of the vertical transfer function 1006. The modulation rate included in the vertical modulation transfer function 1008 in the spatial frequency range between 2 cycles / degree and 30 cycles / degree is higher than that of the vertical transfer function 1006.

[0270] Typically, in Figure 9 , the modulation rate of the vertical modulation transfer function 1006:

[0271] - The modulation rate of the vertical modulation transfer function 1008 differs by less than 20% over a spatial frequency range between 0 and 5 cycles / degree;

[0272] - The modulation rate of the vertical modulation transfer function 1008 differs by less than 20% (here 15%) over a spatial frequency range between 5 and 10 cycles / degree;

[0273] - The modulation rate of the vertical modulation transfer function 1008 differs by less than 20% over a spatial frequency range between 10 and 15 cycles / degree;

[0274] - The modulation rate of the vertical modulation transfer function 1008 differs by less than 20% over a spatial frequency range between 15 and 20 cycles / degree;

[0275] - The modulation rate of the vertical modulation transfer function 1008 differs by less than 20% over a spatial frequency range between 20 and 30 cycles / degree.

[0276] Therefore, the modulation rates of the vertical modulation transfer functions 1006 and 1008 are almost the same over a spatial frequency range between 2 and 30 cycles / degree, with a tolerance of less than 20%. Specifically, the modulation rates of the vertical modulation transfer functions 1006 and 1008 are almost the same, with tolerances:

[0277] - Less than 20% over a spatial frequency range between 2 and 5 cycles / degree;

[0278] - Less than 20% (here 15%) over a spatial frequency range between 5 and 10 cycles / degree;

[0279] - Less than 20% over a spatial frequency range between 10 and 15 cycles / degree;

[0280] - Less than 20% over a spatial frequency range between 15 and 20 cycles / degree;

[0281] - Less than 20% over a spatial frequency range between 20 and 30 cycles / degree.

[0282] Therefore, the values of the vertical modulation transfer functions differ by more than 10% over spatial frequency ranges between 2 and 5 cycles / degree, 5 and 15 cycles / degree, and 15 and 20 cycles / degree.

[0283] Figure 10 A graphical representation of the modulation transfer function calculated over the entire fourth zone 35 and sixth zone 37 of the first peripheral zone 15 of the spectacle lens is shown.

[0284] Figure 10 Shown on the same graph are:

[0285] - The horizontal axis curve 1009 of the modulation transfer function calculated over the entire fourth zone 35 of the spectacle lens 10 (hereinafter referred to as the horizontal modulation function 1009),

[0286] - The vertical axis curve 1010 of the modulation transfer function calculated over the entire fourth zone 35 of the spectacle lens 10 (hereinafter referred to as the vertical modulation function 1010),

[0287] - The horizontal axis curve 1011 of the modulation transfer function calculated over the entire sixth zone 37 of the first peripheral zone 15 of the spectacle lens 10 (hereinafter referred to as the horizontal modulation function 1011), and

[0288] - The vertical axis curve 1012 of the modulation transfer function calculated over the entire sixth zone 37 of the first peripheral zone 15 of the spectacle lens 10 (hereinafter referred to as the vertical modulation function 1012).

[0289] On Figure 10 the horizontal modulation transfer function 1009 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0290] The horizontal modulation transfer function 1011 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.57 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0291] It can also be seen that each of the horizontal modulation transfer function 1009 and the horizontal modulation transfer function 1011 has a value higher than 0.3 (higher than 0.35 here) in a spatial frequency range between 15 and 20 cycles / degree.

[0292] The horizontal modulation transfer function 1009 includes a modulation rate lower than that of the horizontal transfer function 1011 in a spatial frequency range between 2 cycles / degree and 7 cycles / degree. Additionally, the horizontal modulation transfer function 1009 includes a modulation rate lower than that of the horizontal transfer function 1011 in a spatial frequency range between 5 and 12 cycles / degree. The horizontal modulation transfer function 1009 includes a modulation rate lower than that of the horizontal transfer function 1011 in a spatial frequency range between 2 cycles / degree and 13 cycles / degree. For spatial frequencies between 13 and 14 cycles / degree, the two horizontal transfer functions 1009, 1011 exhibit the same modulation rate with a value between 0.41 and 0.43. For spatial frequencies between 14 and 30 cycles / degree, the horizontal modulation transfer function 1009 includes a modulation rate higher than that of the horizontal transfer function 1011 in a spatial frequency range between 15 and 30 cycles / degree.

[0293] Typically, on Figure 10 the modulation rate of the horizontal modulation transfer function 1009:

[0294] - differs from the modulation rate of the horizontal modulation transfer function 1011 by less than 5% in a spatial frequency range between 0 and 5 cycles / degree;

[0295] - differs from the modulation rate of the horizontal modulation transfer function 1011 by less than 5% in a spatial frequency range between 5 and 10 cycles / degree;

[0296] - differs from the modulation rate of the horizontal modulation transfer function 1011 by less than 5% in a spatial frequency range between 10 and 15 cycles / degree;

[0297] - differs from the modulation rate of the horizontal modulation transfer function 1011 by less than 10% in a spatial frequency range between 15 and 20 cycles / degree;

[0298] - differs from the modulation rate of the horizontal modulation transfer function 1011 by less than 12% in a spatial frequency range between 20 and 30 cycles / degree.

[0299] Therefore, the modulation rates of the horizontal modulation transfer functions 1009, 1011 are almost the same in a spatial frequency range between 2 and 30 cycles / degree, with a tolerance of less than 12%.

[0300] The horizontal modulation transfer functions 1009, 1011 presented in the fifth region 35 and the sixth region 37 exhibit modulation rates that are closer than those of the horizontal modulation transfer functions 1005, 1007 in the third region 31 and the fourth region 33.

[0301] In Figure 10Above, the vertical modulation transfer function 1010 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0302] The vertical modulation transfer function 1012 includes values greater than or equal to 0.95, 0.90, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, 0.55 in a spatial frequency range between 0 and 7 cycles / degree, preferably between 1 and 5 cycles / degree.

[0303] It can also be seen that the vertical modulation transfer function 1012 and the vertical modulation transfer function 1010 each include values higher than 0.4 (here higher than 0.50) in a spatial frequency range between 15 and 20 cycles / degree.

[0304] The vertical modulation transfer function 1010 includes a modulation rate higher than that of the vertical transfer function 1012 in a spatial frequency range between 2 cycles / degree and 30 cycles / degree.

[0305] Typically, in Figure 10 above, the modulation rate of the vertical modulation transfer function 1010:

[0306] - differs from the modulation rate of the vertical modulation transfer function 1012 by less than 5% in a spatial frequency range between 0 and 5 cycles / degree;

[0307] - differs from the modulation rate of the vertical modulation transfer function 1012 by less than 7% in a spatial frequency range between 5 and 30 cycles / degree;

[0308] Therefore, the modulation rates of the vertical modulation transfer functions 1010, 1011 are almost the same in a spatial frequency range between 2 and 30 cycles / degree, with a tolerance of less than 7%.

[0309] Third example

[0310] A third example of the spectacle lens 40 according to the present disclosure will be disclosed in connection with Figures 12 to 15 Only the differences from Figure 4 will be described.

[0311] The spectacle lens 40 is divided into three zones: a central zone 44, a first peripheral zone 45, and a second peripheral zone 46. The first peripheral zone 45 includes an arrangement of micro-optical elements 43 having at least one optical feature.

[0312] The optical characteristics of the micro-optical elements 43 in the first peripheral zone 45 include at least one of the following optical characteristics: diopter; geometry; refractive, diffractive, or diffusive optical function; focal length; diameter or size; position.

[0313] The central zone 44, the first peripheral zone 45, and the second peripheral zone 46 are concentric. They are centered on the optical center V40 of the spectacle lens 40. The first peripheral zone 45 surrounds the central zone 44 and is bounded internally by the circular contour 47 of the central zone 44 and externally by the circular contour 48. The second peripheral zone 46 surrounds the first peripheral zone 45 and is bounded internally by the circular contour 48 of the first peripheral zone 45 and externally by the circular contour 49, which coincides with the outer edge of the spectacle lens 40.

[0314] The circular outer contour 47 of the central zone 44 has a diameter of 4 mm. The circular inner contour of the first peripheral zone 45 has a diameter of 4 mm. The circular outer contour 48 of the first peripheral zone 45 has a diameter of 60.0 mm. The inner contour of the second peripheral zone 46 has a diameter of 60.0 mm, and the outer edge 49 has a diameter of 70.00 mm.

[0315] In this embodiment, the micro-optical element of the spectacle lens 40 is a continuous refractive microlens with a diameter of 0.60 mm and a diopter of +4 diopters.

[0316] The first peripheral zone 45 includes:

[0317] - A first zone 51 (U 51 ,x 51 ,y 51 ) having a circular shape with a diameter of 4 mm;

[0318] - A second zone 53 (U 53 ,x 53 ,y 53 ) having a circular shape with a diameter of 4 mm; and

[0319] - A third zone 56 (U 56 ,x 56 ,y 56 ) having a circular shape with a diameter of 4 mm.

[0320] For the example explained above, the first zone 51, and accordingly the second zone 53 and the third zone 56 each include a part or some of the micro-optical elements of the first peripheral zone 45. Typically, the micro-optical elements included in the first zone 51 are arranged to cover at least 60% of the total area of the first zone 51, the micro-optical elements included in the second zone 53 are arranged to cover at least 60% of the total area of the second zone 53, and the micro-optical elements included in the third zone 56 are arranged to cover at least 60% of the total area of the third zone 56.

[0321] The first zone 51 has an outer contour 52 that presents a geometric center U centered on the micro-optical axis Cma of the micro-optical element 43a 51 , which is spaced 9.8 mm from the center V40 of the spectacle lens 40.

[0322] The second zone 53 has an outer contour 54 that presents a geometric center U spaced between 0.10 mm and 2.00 mm (±0.075 mm) from the geometric center U of the first zone 51 51 . Here, the geometric center U 53 is spaced 0.30 mm (±0.075 mm) from the geometric center U of the first zone 21. In particular, the axis y 53 of the second zone 53 is spaced 0.30 mm from the axis y 51 . The vertical axis x 53 of the first zone 51 coincides with the axis x 51 of the second zone 53. This means that the center U 51 of the second zone 53 is spaced along the horizontal axes x 53 , x 53 from the center U 51 of the first zone 51. 53 of the first zone 51. 51

[0323] Typically, the geometric center U 53 is centered on a point D that is positioned between the edges of two consecutive micro-optical elements labeled 43a, 43b. The geometric center U53 of the second zone 53 is spaced at least 8.7 mm from the geometric center V40 of the spectacle lens 40.

[0324] The third zone 56 has an outer contour 57 that presents a geometric center U spaced between 0.10 mm and 2.00 mm (±0.075 mm) from the geometric center U51 of the first zone 51 and / or from the geometric center U53 of the second zone U53 56 . Here, the geometric center U56 is spaced 0.35 mm (±0.075 mm) from the geometric center U 51 of the first zone 51 and is spaced from the geometric center U 53Spaced apart by 0.17 millimeters (±0.075 mm). In this example, the vertical axis y of the second zone 53 53 coincides with the axis y of the third zone 56 56 This means that the center U of the third zone 56 56 along the axis y 56 、y 53 is spaced apart by 0.17 millimeters from the center U of the second zone 53 53

[0325] Typically, the geometric center U 56 is centered on the point E, which is positioned between the edges of three consecutive micro-optical elements labeled 43a, 43b, 43c respectively. The geometric center U of the second zone 53 53 is spaced apart from the geometric center V40 of the spectacle lens 40 by at least 8.7 millimeters.

[0326] Reference will be made Figure 14 to disclose the technical characteristics of the first zone 51, the second zone 53 and the third zone 56. The technical characteristics of the first zone 51, the second zone 53 and the third zone 56 are studied by means of the modulation transfer function calculated or estimated as explained above in the first example.

[0327] Figure 14 Shows a graphical representation of the modulation transfer function calculated over the entire first zone 51, second zone 53 and third zone 56 of the first peripheral zone 45 of the spectacle lens 40.

[0328] Figure 14 Shown on the same graph are:

[0329] - the horizontal axis curve 1013 of the modulation transfer function calculated over the entire first zone 51 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1013),

[0330] - the horizontal axis curve 1014 of the modulation transfer function calculated over the entire second zone 53 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1014),

[0331] - the horizontal axis curve 1015 of the modulation transfer function calculated over the entire third zone 56 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1015),

[0332] - the vertical axis curve 1016 of the modulation transfer function calculated over the entire first zone 51 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1016),

[0333] - the vertical axis curve 1017 of the modulation transfer function calculated over the entire second zone 53 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1017),

[0334] ​- The vertical axis curve 1018 of the modulation transfer function calculated over the entire third zone 56 of the spectacle lens 40 (hereinafter referred to as the horizontal modulation function 1018).

[0335] Over Figure 14 the horizontal modulation transfer functions 1013, 1014, and 1015 overlap within a tolerance of less than 5%.

[0336] Therefore, this means that the modulation rate of the horizontal modulation transfer function 1013, the modulation rate of the horizontal modulation transfer function 1014, and the modulation rate of the horizontal modulation transfer function 1015 differ by less than 40% (here less than 10%) over the spatial frequency range between 0 and 60 cycles / degree, particularly between 5 and 15 cycles / degree, between 15 and 25 cycles / degree, between 25 and 35 cycles / degree, between 35 and 45 cycles / degree, between 45 and 55 cycles / degree, and between 55 and 60 cycles / degree. In other words, the modulation rates of the horizontal modulation transfer function 1013, the horizontal modulation transfer function 1014, and the horizontal modulation transfer function 1015 are almost the same over the spatial frequency range between 0 and 60 cycles / degree.

[0337] The horizontal modulation transfer functions 1013, 1014, and 1015 each have 3 valleys over the spatial frequency range between 5 and 60 cycles / degree and have 3 peaks over the spatial frequency range between 5 and 60 cycles / degree. The horizontal modulation transfer functions 1013, 1014, and 1015 each exhibit a modulation rate.

[0338] The horizontal modulation transfer functions 1013, 1014, and 1015 each have a value higher than 0.6 over the spatial frequency range between 0 and 7 cycles / degree, particularly over the spatial frequency range between 1 and 5 cycles / degree.

[0339] It can also be seen that the horizontal modulation transfer functions 1013, 1014, and the horizontal transfer function 1015 each have a value higher than 0.4 (here higher than 0.5) over the spatial frequency range between 15 and 20 cycles / degree.

[0340] In this example, each of the horizontal modulation transfer functions 1013, 1014, 1015:

[0341] - Exhibits a first valley 302a over the spatial frequency range between 5 and 15 cycles / degree, and this first valley exhibits a minimum value 304a equal to 0.47 at a spatial frequency of 10 cycles / degree;

[0342] - Presents a second valley 302b in a spatial frequency range between 25 and 35 cycles / degree, and this second valley presents a minimum value 304b equal to 0.38 at a spatial frequency of 28 cycles / degree;

[0343] - Presents a third valley 302c in a spatial frequency range between 45 and 55 cycles / degree, and this third valley presents a minimum value 304c equal to 0.28 at a spatial frequency of 58 cycles / degree;

[0344] In addition, each of the horizontal modulation transfer functions 1013, 1014, 1015:

[0345] - Presents a first peak 306a in a spatial frequency range between 15 and 25 cycles / degree, and this first peak presents a maximum value 308a equal to 0.82 at a spatial frequency of 18 cycles / degree;

[0346] - Presents a second peak 306b in a spatial frequency range between 35 and 45 cycles / degree, and this second peak presents a maximum value 308b equal to 0.62 at a spatial frequency of 47 cycles / degree;

[0347] - Presents a third peak 306c in a spatial frequency range between 55 and 60 cycles / degree, and this third peak presents a maximum value 308c equal to 0.45 at a spatial frequency of 56 cycles / degree.

[0348] Therefore, each of the horizontal modulation transfer functions 1013, 1014, 1015 presents a value in the spatial frequency range between 15 and 25 cycles / degree that is at least 10% higher than the value of the horizontal modulation transfer functions 1013, 1014, 1015 in the spatial frequency range between 5 and 12 cycles / degree. Similarly, each of the horizontal modulation transfer functions 1013, 1014, 1015 presents a value in the spatial frequency range between 35 and 45 cycles / degree that is at least 10% higher than the value of the horizontal modulation transfer functions 1013, 1014, 1015 in the spatial frequency range between 25 and 32 cycles / degree. Each of the horizontal modulation transfer functions 1013, 1014, 1015 presents a value in the spatial frequency range between 55 and 60 cycles / degree that is at least 10% higher than the value of the horizontal modulation transfer functions 1013, 1014, 1015 in the spatial frequency range between 45 and 52 cycles / degree.

[0349] The vertical modulation transfer function 1016, as well as the vertical modulation transfer function 1017 and the vertical modulation transfer function 1018, each presents a modulation rate.

[0350] At Figure 14Vertically, the vertical modulation transfer function 1016, the vertical modulation transfer function 1017, and the vertical modulation transfer function 1018 overlap within a tolerance of less than 5%.

[0351] This means that the modulation rate of the vertical modulation transfer function 1016 differs from the modulation rates of the vertical modulation transfer function 1017 and the vertical modulation transfer function 1018 by less than 40% (here 5%) over a spatial frequency range between 0 and 60 cycles / degree.

[0352] In other words, the modulation rates of the vertical modulation transfer function 1016, the vertical modulation transfer function 1017, and the vertical modulation transfer function 1018 are almost the same over a spatial frequency range between 0 and 60 cycles / degree.

[0353] The vertical modulation transfer function 1016, the vertical modulation transfer function 1017, and the vertical modulation transfer function 1018 each have a value higher than 0.6 over a spatial frequency range between 0 and 7 cycles / degree, especially over a spatial frequency range between 1 and 5 cycles / degree.

[0354] It can also be seen that the vertical modulation transfer function 1016, the vertical modulation transfer function 1017, and the vertical modulation transfer function 1018 each have a value higher than 0.4 over a spatial frequency range between 15 and 20 cycles / degree.

[0355] The vertical modulation transfer function 1016, the vertical modulation transfer function 1017, and the vertical modulation transfer function 1018 each have 2 valleys over a spatial frequency range between 5 and 60 cycles / degree and have 1 peak over a spatial frequency range between 5 and 60 cycles / degree.

[0356] In particular, each of the vertical modulation transfer functions 1016, 1017, 1018:

[0357] - Presents a first valley 310a over a spatial frequency range between 5 and 25 cycles / degree, and this first valley presents a minimum value 312a equal to 0.40 at a spatial frequency of 23 cycles / degree;

[0358] - Presents a second valley 310b over a spatial frequency range between 38 and 60 cycles / degree, and this second valley presents a minimum value 312b equal to 0.24 at a spatial frequency of 57 cycles / degree;

[0359] In addition, each of the vertical modulation transfer functions 1016, 1017, 1018 presents a peak 314a over a spatial frequency range between 25 and 40 cycles / degree, and this peak presents a maximum value 316a equal to 0.68 at a spatial frequency of 33 cycles / degree.

[0360] Therefore, this means that the modulation rate of the vertical modulation transfer function 1016 differs by less than 40% (here 10%) from the modulation rate of the vertical modulation transfer function 1017 and the modulation rate of the vertical modulation transfer function 1018 in the spatial frequency range between 0 and 60 cycles / degree.

[0361] Each of the vertical modulation transfer functions 1016, 1017, 1018 exhibits a value that is at least 10% higher in the spatial frequency range between 25 and 40 cycles / degree than the value of the vertical modulation transfer functions 1016, 1017, 1018 in the spatial frequency range between 5 and 23 cycles / degree.

[0362] Therefore, it can be seen in this example that the values of the different vertical modulation transfer functions are almost the same, and the different horizontal modulation transfer functions are almost the same within a tolerance of 5%.

[0363] Fourth example

[0364] will be combined with Figures 15 to 16 to disclose a variant of the third example of the spectacle lens according to the present disclosure. Only the differences from Figures 12 to 14 will be described.

[0365] In this example, the spectacle lens includes a design similar to the spectacle lens 40 shown in Figure 12 and Figure 13 Specifically, in this variant, the micro-optical elements of the spectacle lens are continuous refractive bifocal micro-optical elements, which have a diameter of 1.50 mm, and a refractive power of +4 diopters at the periphery of the micro-optical elements and 0 diopters at the center of the micro-optical elements.

[0366] In this embodiment, the spectacle lens includes a first zone 59 (U 59 ,x 59 ,y 59 ), a second zone 61 (U61,x 61 ,y 61 ), and a third zone 65 (U65,x 65 ,y 65 ). The first zone 59, the second zone 61, and the third zone 65 each have a circular shape with a diameter of 4 mm.

[0367] For the example explained above, the first zone 59, and correspondingly the second zone 61 and the third zone 65 each include a part or some of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the first zone 59 are arranged to cover at least 60% of the total area of the first zone 59, correspondingly the micro-optical elements included in the second zone 61 are arranged to cover at least 60% of the total area of the second zone 61, and correspondingly the micro-optical elements included in the third zone 65 are arranged to cover at least 60% of the total area of the third zone 65.

[0368] The first zone 59 has an outer contour 58 which presents a geometric center U centered on the micro-optical axis Cma of the micro-optical element 53a 59 , which geometric center is spaced 9.0 mm from the center of the spectacle lens.

[0369] The second zone 61 has an outer contour 60 which presents a geometric center U spaced between 0.10 mm and 2.00 mm (±0.075 mm) from the geometric center U of the first zone 59 59 . Here, the geometric center U61 is spaced 0.75 mm (±0.075 mm) from the geometric center U59 of the first zone 59. In this example, the axis x of the first zone 59 61 coincides with the axis x of the second zone 61 59 . This means that the center U of the second zone 61 61 is spaced along the (horizontal) axis x 61 , x 59 , x 61 from the center U of the first zone 59 59 .

[0370] Typically, the geometric center U 61 is centered on the point D which is positioned between two micro-optical elements 53a, 53b. The geometric center U of the second zone 61 61 is spaced from Figure 15 the geometric center of the spectacle lens shown by at least 9.7 mm.

[0371] The third zone 65 has an outer contour 64 which presents a geometric center U65 spaced between 0.10 mm and 2.00 mm (±0.075 mm) from the geometric center U of the first zone 59 59 and / or from the geometric center U of the second zone 61 61 . Here, the geometric center U 65 is spaced 0.86 mm (±0.075 mm) from the geometric center U of the first zone 59 59 and is spaced 0.43 mm (±0.075 mm) from the geometric center U of the second zone 61 . In this example, the vertical axis y of the second zone 61 61with the axis y of the third zone 65 65 coincides. This means that the center U of the third zone 65 65 along the axis y 61 、y 65 is spaced 0.43 mm from the center U of the second zone 61 61 。

[0372] Typically, the geometric center U 65 is centered on the point E, which is located between the edges of three consecutive micro - optical elements labeled 53a, 53b, 53c respectively. The geometric center U of the third zone 65 65 is spaced at least 9.76 mm from the geometric center of the spectacle lens.

[0373] Reference will be made Figure 16 to disclose the technical characteristics of the first zone 59, the second zone 61 and the third zone 65. The technical characteristics of the first zone 59, the second zone 61 and the third zone 65 are studied by the modulation transfer function calculated or estimated as explained above in the first example.

[0374] Figure 16 Shows a graphical representation of the modulation transfer function calculated over the entire first zone 59, second zone 61 and third zone 65 of the spectacle lens.

[0375] Figure 16 Shown on the same graph are:

[0376] - the horizontal axis curve 1019 of the modulation transfer function calculated over the entire first zone 59 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1019),

[0377] - the horizontal axis curve 1020 of the modulation transfer function calculated over the entire second zone 61 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1020),

[0378] - the horizontal axis curve 1021 of the modulation transfer function calculated over the entire third zone 65 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1021),

[0379] - the vertical axis curve 1022 of the modulation transfer function calculated over the entire first zone 59 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1022),

[0380] - the vertical axis curve 1023 of the modulation transfer function calculated over the entire second zone 61 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1023),

[0381] - the vertical axis curve 1024 of the modulation transfer function calculated over the entire third zone 65 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1024).

[0382] The horizontal modulation transfer function 1019, the horizontal modulation transfer function 1020, and the horizontal modulation transfer function 1021 each have a value higher than 0.4 in a spatial frequency range between 0 and 7 cycles / degree, particularly in a spatial frequency range between 1 and 5 cycles / degree.

[0383] It can also be seen that the horizontal modulation transfer function 1019, the horizontal modulation transfer function 1020, and the horizontal transfer function 1021 each have a value higher than 0.25 in a spatial frequency range between 15 and 20 cycles / degree.

[0384] The horizontal modulation transfer function 1019, the horizontal modulation transfer function 1020, and the horizontal modulation transfer function 1021 each exhibit a modulation rate.

[0385] The modulation rate of the horizontal modulation transfer function 1019, the modulation rate of the horizontal modulation transfer function 1020, and the modulation rate of the horizontal modulation transfer function 1021 differ by less than 40% (less than 25% here) in a spatial frequency range between 0 and 60 cycles / degree. In other words, the modulation rate of the horizontal modulation transfer function 1019, the modulation rate of the horizontal modulation transfer function 1020, and the modulation rate of the horizontal modulation transfer function 1021 are almost the same in a spatial frequency range between 0 and 60 cycles / degree, with a tolerance of 25%.

[0386] At Figure 16 each of the horizontal modulation transfer functions 1019, 1020, 1021 has 2 valleys and 1 peak in a spatial frequency range between 5 and 60 cycles / degree.

[0387] Therefore, the horizontal modulation transfer function 1019, the horizontal modulation transfer function 1020, and the horizontal modulation transfer function 1021 exhibit a peak 402a in a spatial frequency range between 45 and 53 cycles / degree, and this peak exhibits a maximum value 404a equal to 0.53 at a spatial frequency of 47 cycles / degree.

[0388] Therefore, each of the horizontal modulation transfer functions 1019, 1020, 1021 exhibits a value in a spatial frequency range between 45 and 53 cycles / degree that is at least 10% higher than the value of the horizontal modulation transfer functions 1019, 1020, 1021 in a spatial frequency range between 5 and 40 cycles.

[0389] In a special frequency range between 45 and 53 cycles / degree, the modulation rate of the horizontal modulation transfer function 1019 is almost the same as the modulation rates of the horizontal modulation transfer function 1020 and the horizontal modulation transfer function 1021 within a tolerance of 10%. In particular, in a specific frequency range between 45 and 50 cycles / degree, the difference in the modulation rates of the horizontal modulation transfer function 1019, the horizontal modulation transfer function 1020, and the horizontal modulation transfer function 1021 is less than 15%.

[0390] The modulation rate of the horizontal modulation transfer function 1019 differs from the modulation rates of the horizontal modulation transfer function 1020 and the horizontal modulation transfer function 1021 by more than 10% in the spatial frequency ranges between 5 and 10 cycles / degree and between 10 and 15 cycles / degree.

[0391] The modulation rate of the horizontal modulation transfer function 1019 differs from the modulation rates of the horizontal modulation transfer function 1020 and the horizontal modulation transfer function 1021 by at least 40% in the spatial frequency range between 55 and 60 cycles / degree.

[0392] Similarly, the vertical modulation transfer functions 1022, 1023, and 1024 each exhibit a modulation rate.

[0393] The vertical modulation transfer functions 1022, 1023, and the vertical transfer function 1024 each have a value higher than 0.4 in the spatial frequency range between 0 and 7 cycles / degree, especially in the spatial frequency range between 1 and 5 cycles / degree.

[0394] It can also be seen that the vertical modulation transfer functions 1022, 1023, and the vertical transfer function 1024 each have a value higher than 0.17 in the spatial frequency range between 15 and 20 cycles / degree.

[0395] The vertical modulation transfer functions 1022, 1023, and the vertical modulation transfer function 1024 do not have any valleys or peaks in the spatial frequency range between 5 and 60.

[0396] At Figure 16 the modulation rate of the vertical modulation transfer function 1022 differs from the modulation rates of the vertical modulation transfer function 1023 and the vertical modulation transfer function 1024 by less than 40% in the spatial frequency range between 2 and 60 cycles / degree.

[0397] It can be seen that the modulation rate of the vertical modulation transfer function 1022 differs by more than 10% from the modulation rate of the vertical modulation transfer function 1023 and the modulation rate of the vertical modulation transfer function 1024 in the spatial frequency range between 5 and 10 cycles / degree and between 10 and 15 cycles / degree.

[0398] In this example, these modulation transfer functions are very stable from one direction (e.g., along axis x) to another direction (e.g., along axis y) of the spectacle lens and from one zone to another zone.

[0399] Fifth example

[0400] will be combined Figures 17 to 18 to disclose a variant of the fifth example of the spectacle lens according to the present disclosure. Only the differences from Figures 12 to 14 and Figures 15 to 16 will be described.

[0401] In this example, the spectacle lens includes a design similar to the spectacle lens 40 shown in Figure 12 and Figure 13 . However, in this fifth example, the micro-optical elements of the spectacle lens are continuous π-Fresnel micro-optical elements (aspherical micro-optical elements) with a diameter of 2.0 mm and an average diopter of +4.5 diopters for the first-order diffraction and 0 diopters for the zero-order diffraction.

[0402] In this embodiment, the spectacle lens includes a first zone 67 (U 67 , x 67 , y 67 ), a second zone 69 (U 69 , x 69 , y 69 ), and a third zone 71 (U71, x 71 , y 71 ). The first zone 67, the second zone 69, and the third zone 71 each have a circular shape with a diameter of 4 mm.

[0403] For the example explained above, the first zone 67, and correspondingly the second zone 69 and the third zone 71 each include a part or some of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the first zone 67 are arranged to cover at least 60% of the total area of the first zone 67, correspondingly the micro-optical elements included in the second zone 69 are arranged to cover at least 60% of the total area of the second zone 69, and correspondingly the micro-optical elements included in the third zone 71 are arranged to cover at least 60% of the total area of the third zone 71.

[0404] The first zone 67 has an outer contour 66 that presents a geometric center U67 centered on the micro-optical axis Cma of the micro-optical element 63a, and this geometric center is spaced 7.0 millimeters from the center of the spectacle lens.

[0405] The second zone 69 has an outer contour 68 that presents a geometric center U that is spaced between 0.10 millimeter and 2.00 millimeters (±0.075 mm) from the geometric center U of the first zone 67. Here, the geometric center U 67 is spaced 1.00 millimeter (±0.075 mm) from the geometric center U of the first zone 67. In this example, the vertical axis x 69 of the first zone 67 coincides with the axis x 67 of the second zone 69. This means that the center U 67 of the second zone 69 is spaced along the horizontal axis x 69 and x 69 from the center U 67 of the first zone 67. 69 Typically, the geometric center U 67 is centered on the point D, which is positioned between the two micro-optical elements 63a and 63b. The geometric center U

[0406] of the second zone 69 is spaced by at least 6.00 millimeters from the geometric center of the spectacle lens 69 as shown. 69 from Figure 17 The third zone 71 has an outer contour 72 that presents a geometric center U that is spaced between 0.10 millimeter and 2.00 millimeters (±0.075 mm) from the geometric center U

[0407] of the first zone 67 and / or from the geometric center U 67 of the second zone U69. Here, the geometric center U 69 is spaced 1.07 millimeters (±0.075 mm) from the geometric center U 71 of the first zone 67 and is spaced 0.58 millimeter (±0.075 mm) from the geometric center of the second zone. In this example, the vertical axis y 71 of the second zone 69 coincides with the axis y 67 of the third zone 71. This means that the center U 69 of the third zone 71 is spaced 0.58 millimeter along the axis y 69 and y 71 from the center U 71 of the second zone 69. 69 from 71 Typically, the geometric center U 69 is centered on the point D, which is positioned between the two micro-optical elements 63a and 63b. The geometric center U

[0408] of the third zone 71 is spaced by at least 6.00 millimeters from the geometric center of the spectacle lens 71Centered on point E, which is located between the edges of three consecutive micro-optical elements respectively labeled 63a, 63b, and 63c. The geometric center U of the second zone 69 69 is spaced apart from the geometric center of the spectacle lens by at least 6.03 mm.

[0409] With reference Figure 18 to disclose the technical characteristics of the first zone 67, the second zone 69, and the third zone 71. The technical characteristics of the first zone 67, the second zone 69, and the third zone 71 are studied by means of the modulation transfer function calculated or estimated as explained above in the first example.

[0410] Figure 18 A graphical representation of the modulation transfer function calculated over the entire first zone 67, second zone 69, and third zone 71 of the first peripheral zone of the spectacle lens is shown.

[0411] Figure 18 Shown on the same graph are:

[0412] - the horizontal axis curve 1025 of the modulation transfer function calculated over the entire first zone 67 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1025),

[0413] - the horizontal axis curve 1026 of the modulation transfer function calculated over the entire second zone 69 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1026),

[0414] - the horizontal axis curve 1027 of the modulation transfer function calculated over the entire third zone 71 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1027),

[0415] - the vertical axis curve 1028 of the modulation transfer function calculated over the entire first zone 67 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1028),

[0416] - the vertical axis curve 1029 of the modulation transfer function calculated over the entire second zone 69 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1029),

[0417] - the vertical axis curve 1030 of the modulation transfer function calculated over the entire third zone 71 of the spectacle lens (hereinafter referred to as the horizontal modulation function 1030).

[0418] The horizontal modulation transfer function 1025, the horizontal modulation transfer function 1026, and the horizontal modulation transfer function 1027 each have a value higher than 0.4 in the spatial frequency range between 0 and 7 cycles / degree, in particular in the spatial frequency range between 1 and 5 cycles / degree.

[0419] It can also be seen that the horizontal modulation transfer function 1025, the horizontal modulation transfer function 1026, and the horizontal transfer function 1027 each have a value higher than 0.40 in the spatial frequency range between 15 and 20 cycles per degree.

[0420] The vertical modulation transfer function 1028, the vertical modulation transfer function 1029, and the vertical transfer function 1030 each have a value higher than 0.4 in the spatial frequency range between 0 and 7 cycles per degree, particularly in the spatial frequency range between 1 and 5 cycles per degree.

[0421] It can also be seen that the vertical modulation transfer function 1028, the vertical modulation transfer function 1029, and the vertical transfer function 1030 each have a value higher than 0.40 in the spatial frequency range between 15 and 20 cycles per degree.

[0422] The horizontal modulation transfer function 1025, the horizontal modulation transfer function 1026, and the horizontal modulation transfer function 1027 each exhibit a modulation rate.

[0423] Similarly, the vertical modulation transfer function 1028, the vertical modulation transfer function 1029, and the vertical modulation transfer function 1030 each exhibit a modulation rate.

[0424] The vertical modulation transfer function 1028, the vertical modulation transfer function 1029, and the vertical modulation transfer function 1030 do not have any valleys or peaks in the spatial frequency range between 5 and 60.

[0425] In this example, the modulation rate of the horizontal modulation transfer function 1025 is almost the same as the modulation rate of the horizontal modulation transfer function 1026 and the modulation rate of the horizontal modulation transfer function 1027 within a tolerance of 15% in the spatial frequency range between 0 and 60 cycles per degree. In other words, the modulation rate of the horizontal modulation transfer function 1025 differs from the modulation rate of the horizontal modulation transfer function 1026 and the modulation rate of the horizontal modulation transfer function 1027 by less than 15% in the spatial frequency range between 0 and 60 cycles per degree.

[0426] In addition, the modulation rate of the vertical modulation transfer function 1028 is almost the same as the modulation rate of the vertical modulation transfer function 1029 and the modulation rate of the vertical modulation transfer function 1030 (within a tolerance of 15%) in the spatial frequency range between 0 and 60 cycles per degree. In other words, the modulation rate of the vertical modulation transfer function 1028 differs from the modulation rate of the vertical modulation transfer function 1029 and the modulation rate of the vertical modulation transfer function 1030 by less than 10% in the spatial frequency range between 0 and 60 cycles per degree.

[0427] Furthermore, it can be seen that in the spatial frequency range between 0 and 60 cycles per degree:

[0428] - The modulation rate of the horizontal modulation transfer function 1025 differs from that of the vertical modulation transfer function 1028 by less than 10%.

[0429] - The modulation rate of the horizontal modulation transfer function 1026 differs from that of the vertical modulation transfer function 1029 by less than 10%, and

[0430] - The modulation rate of the horizontal modulation transfer function 1027 differs from that of the vertical modulation transfer function 1030 by less than 10%.

[0431] Therefore, in this embodiment, the value of the modulation transfer function is very stable from one direction (e.g., along the x-axis) to another direction of the spectacle lens and from one zone to another zone.

[0432] Sixth example

[0433] In connection with Figures 19 to 22 a sixth example of the spectacle lens 70 according to the present disclosure will be disclosed. Only the differences from the spectacle lens 10 disclosed above will be described.

[0434] Similar to the spectacle lens 10, the spectacle lens 70 includes a central zone, a first peripheral zone 75 arranged around the central zone, and a second peripheral zone arranged around the first peripheral zone. Each zone of the spectacle lens 70 is concentric. The central zone and the second peripheral zone do not have micro-optical elements. The sizes of these zones are similar to the sizes of the zones disclosed above for the spectacle lens 10.

[0435] The spectacle lens 70 includes an arrangement of micro-optical elements 73 having a shape similar to that of the micro-optical elements 13 of the spectacle lens 10. These micro-optical elements 73 are positioned in the first peripheral zone of the spectacle lens 70. For example, the density of the arrangement of the micro-optical elements on the first peripheral zone of the spectacle lens 70 is between 30% and 70%, for example between 40% and 60%.

[0436] In this embodiment, all the micro-optical elements 73 of the spectacle lens 70 are the same. Each micro-optical element 73 has a diameter of 1.12 mm and a spherical power of 3.5 diopters. Compared with the spectacle lens 10, each micro-optical element 73 is spaced apart from an adjacent micro-optical element 73 by at least 0.1 mm, herein at least 0.5 mm. For example, the edge of one optical element 73 is spaced apart from the edge of an adjacent optical element by at least 0.5 mm.

[0437] Similar to the spectacle lens 10, Figure 19 the first peripheral zone of the shown spectacle lens 70 includes a first zone 81 having a circular shape with a diameter of 4 mm (U81,x 81 ,y 81) and a second zone 85 (U85,x 85 ,y 85 ) having a circular shape with a diameter of 4 mm. The first zone 81 and correspondingly the second zone 85 each include a part or some of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the first zone 81 are arranged to cover at least 30% of the total area of the first zone 81, and correspondingly the micro-optical elements included in the second zone 85 are arranged to cover at least 35% of the total area of the second zone 85.

[0438] The first zone 81 has an outer contour 82 that presents a geometric center U centered on the micro-optical axis Cme of the micro-optical element 73e 81 , which is spaced 9.8 mm from the center of the spectacle lens 70.

[0439] The second zone 85 has an outer contour 84 that presents a geometric center U 81 spaced between 0.10 mm and 2.00 mm (±0.075 mm) from the geometric center U of the first zone 81 85 . Here, the geometric center U 85 is spaced 0.85 mm (±0.075 mm) from the geometric center U of the first zone 81. Typically, the geometric center U 81 is centered on the point E, which is positioned between the edges of two adjacent micro-optical elements (the micro-optical element 73e and another micro-optical element labeled 73f). The geometric center U of the second zone 85 85 is spaced at least 8.00 mm from the geometric center V70 of the spectacle lens 70. In this example, the axis x 85 of the first zone 81 81 coincides with the axis x 85 of the second zone 85, but the axis y 81 is spaced 0.85 mm from the axis y 85 of the second zone 85.

[0440] In addition, Figure 19 the first peripheral zone of the spectacle lens 70 shown includes a third zone 86 having a circular shape with a diameter of 4 mm and a fourth zone 88 having a circular shape with a diameter of 4 mm. The third zone 86 and correspondingly the fourth zone 88 each include a part or some of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the third zone 86 are arranged to cover at least 25% of the total area of the third zone 86, and correspondingly the micro-optical elements included in the fourth zone 88 are arranged to cover at least 35% of the total area of the fourth zone 88.

[0441] The third zone 86 has an outer contour 87 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the third zone 86. Here, the geometric center of the third zone 86 coincides with the geometric center U of the first zone 81 81 coincide. In other words, this means that the first zone 81 and the third zone 86 are concentric.

[0442] The fourth zone 88 has an outer contour 89 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the fourth zone 88. Here, the geometric center of the fourth zone 88 coincides with the geometric center U of the second zone 85 85 coincide. This means that the second zone 85 and the fourth zone 88 are concentric.

[0443] The first peripheral zone further includes a fifth zone 90 having a circular shape with a diameter of 8 mm.

[0444] The fifth zone 90 includes a part of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the fifth zone 90 are arranged to cover at least 30% of the total area of the fifth zone 90. Here, the density of the micro-optical elements in the fifth zone 90 is higher than 35%.

[0445] The fifth zone 90 has an outer contour 91 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the fifth zone 90. Here, the geometric center of the fifth zone 90 coincides with the geometric center U of the first zone 81 81 coincide. This means that the third zone 81 and the fifth zone 90 are concentric.

[0446] The first peripheral zone further includes a sixth zone 92 having a circular shape with a diameter of 8 mm.

[0447] The sixth zone 92 includes a part of the micro-optical elements of the first peripheral zone. Typically, the micro-optical elements included in the sixth zone 92 are arranged to cover at least 30% of the total area of the sixth zone 92. Here, the density of the micro-optical elements in the fifth zone 92 is higher than 35%.

[0448] The sixth zone 92 has an outer contour 93 that presents a geometric center centered on the optical axis Cm of one of the micro-optical elements included in the sixth zone 92. Here, the geometric center of the sixth zone 92 coincides with the geometric center U of the second zone 85 85 coincide. This means that the second zone 85 and the sixth zone 92 are concentric.

[0449] Reference will be made Figures 20 to 22 to disclose the technical features of the first zone 81, the second zone 85, the third zone 86, the fourth zone 88, the fifth zone 90 and the sixth zone 92.

[0450] Figure 20Shows a graphical representation of the modulation transfer function calculated over the entire first region 81 and the second region 85 of the first peripheral region of the spectacle lens 70.

[0451] Figure 20 Shown on the same graph are:

[0452] - The horizontal axis curve 1031 of the modulation transfer function calculated over the entire first region 81 of the spectacle lens 70 (hereinafter referred to as the horizontal modulation function 1031),

[0453] - The vertical axis curve 1032 of the modulation transfer function calculated over the entire first region 81 of the spectacle lens 70 (hereinafter referred to as the vertical modulation function 1032),

[0454] - The horizontal axis curve 1033 of the modulation transfer function calculated over the entire second region 85 of the first peripheral region of the spectacle lens 70 (hereinafter referred to as the horizontal modulation function 1033), and

[0455] - The vertical axis curve 1034 of the modulation transfer function calculated over the entire fourth region 85 of the first peripheral region of the spectacle lens 70 (hereinafter referred to as the vertical modulation function 1034).

[0456] The horizontal modulation transfer function 1031 and the horizontal modulation transfer function 1033 each have a value higher than 0.55 in the spatial frequency range between 0 and 7 cycles / degree, especially in the spatial frequency range between 1 and 5 cycles / degree.

[0457] It can also be seen that the horizontal modulation transfer function 1031 and the horizontal modulation transfer function 1033 each have a value higher than 0.23 in the spatial frequency range between 15 and 20 cycles / degree.

[0458] The vertical modulation transfer function 1032 and the vertical modulation transfer function 1034 each have a value higher than 0.4 in the spatial frequency range between 0 and 7 cycles / degree, especially in the spatial frequency range between 1 and 5 cycles / degree.

[0459] It can also be seen that the vertical modulation transfer function 1032 and the vertical modulation transfer function 1034 each have a value higher than 0.25 in the spatial frequency range between 15 and 20 cycles / degree.

[0460] The horizontal modulation transfer function 1031 and the horizontal modulation transfer function 1033 each exhibit a modulation rate.

[0461] The modulation rate of the horizontal modulation transfer function 1031 and the modulation rate of the horizontal modulation transfer function 1033 differ by less than 10% over a spatial frequency range between 0 and 30 cycles per degree, typically between 0 and 5 cycles per degree, between 5 and 10 cycles per degree, between 10 and 15 cycles per degree, between 15 and 20 cycles per degree, and between 20 and 30 cycles per degree.

[0462] Therefore, the modulation rates of the horizontal modulation transfer functions 1031 and 1033 are nearly the same over a spatial frequency range between 0 and 30 cycles per degree, typically between 0 and 5 cycles per degree, between 5 and 10 cycles per degree, between 10 and 15 cycles per degree, between 15 and 20 cycles per degree, and between 20 and 30 cycles per degree, with a tolerance of less than 10%.

[0463] In addition, each of the vertical modulation transfer function 1032 and the vertical modulation transfer function 1034 exhibits a modulation rate.

[0464] The modulation rate of the vertical modulation transfer function 1032 and the modulation rate of the vertical modulation transfer function 1034 differ by less than 10% over a spatial frequency range between 0 and 30 cycles per degree, typically between 0 and 5 cycles per degree, between 5 and 10 cycles per degree, between 10 and 15 cycles per degree, between 15 and 20 cycles per degree, and between 20 and 30 cycles per degree.

[0465] Therefore, the modulation rates of the vertical modulation transfer functions 1032 and 1034 are nearly the same over a spatial frequency range between 0 and 5 cycles per degree and over a spatial frequency range between 20 and 30 cycles per degree, with a tolerance of less than 20%. The modulation rate of the vertical modulation transfer function 1032 and the modulation rate of the vertical modulation transfer function 1034 differ by at least 10% over a spatial frequency range between 15 and 20 cycles per degree.

[0466] Figure 21 A graphical representation of the modulation transfer function calculated over the entire third zone 86 and fourth zone 88 of the first peripheral zone of the spectacle lens 70 is shown.

[0467] Figure 21 Shown on the same graph are:

[0468] - the horizontal axis curve 1035 of the modulation transfer function calculated over the entire third zone 86 of the spectacle lens 70 (hereinafter referred to as the horizontal modulation function 1035),

[0469] - the vertical axis curve 1036 of the modulation transfer function calculated over the entire third zone 86 of the spectacle lens 70 (hereinafter referred to as the vertical modulation function 1036),

[0470] - The horizontal axis curve 1037 of the modulation transfer function (hereinafter referred to as the horizontal modulation function 1037) calculated over the entire fourth zone 88 of the first peripheral zone of the spectacle lens 70, and

[0471] - The vertical axis curve 1038 of the modulation transfer function (hereinafter referred to as the vertical modulation function 1038) calculated over the entire fourth zone 88 of the first peripheral zone of the spectacle lens 70.

[0472] The horizontal modulation transfer function 1035 and the horizontal modulation transfer function 1037 each have a value higher than 0.45 in the spatial frequency range between 0 and 7 cycles / degree, particularly in the spatial frequency range between 1 and 5 cycles / degree.

[0473] It can also be seen that the horizontal modulation transfer function 1035 and the horizontal modulation transfer function 1037 each have a value higher than 0.30 in the spatial frequency range between 15 and 20 cycles / degree.

[0474] The vertical modulation transfer function 1038 and the vertical modulation transfer function 1036 each have a value higher than 0.4 in the spatial frequency range between 0 and 7 cycles / degree, particularly in the spatial frequency range between 1 and 5 cycles / degree.

[0475] It can also be seen that the vertical modulation transfer function 1036 and the vertical modulation transfer function 1038 each have a value higher than 0.25 in the spatial frequency range between 15 and 20 cycles / degree.

[0476] The horizontal modulation transfer function 1035 and the horizontal modulation transfer function 1037 each exhibit a modulation rate.

[0477] At Figure 21 the modulation rate of the horizontal modulation transfer function 1035 and the modulation rate of the horizontal modulation transfer function 1037 differ by less than 10% in the spatial frequency ranges between 0 and 5 cycles / degree and between 20 and 30 cycles / degree. The modulation rate of the horizontal modulation transfer function 1035 and the modulation rate of the horizontal modulation transfer function 1037 differ by more than 10% in the spatial frequency ranges between 10 and 15 cycles / degree and between 15 and 20 cycles / degree.

[0478] In addition, the vertical modulation transfer function 1036 and the vertical modulation transfer function 1038 each exhibit a modulation rate.

[0479] At Figure 21Above, the modulation rate of the vertical modulation transfer function 1036 and the modulation rate of the vertical modulation transfer function 1038 differ by less than 10% in the spatial frequency range between 0 and 5 cycles / degree. The modulation rate of the vertical modulation transfer function 1036 and the modulation rate of the vertical modulation transfer function 1038 differ by more than 10% in the spatial frequency ranges between 10 and 15 cycles / degree and between 15 and 20 cycles / degree.

[0480] Figure 22 A graphical representation of the modulation transfer function calculated over the entire fifth zone 90 and sixth zone 92 of the first peripheral zone of the spectacle lens 70 is shown.

[0481] Figure 22 Shown on the same graph are:

[0482] - The horizontal axis curve 1040 of the modulation transfer function calculated over the entire fifth zone 90 of the spectacle lens 70 (hereinafter referred to as the horizontal modulation function 1040),

[0483] - The vertical axis curve 1041 of the modulation transfer function calculated over the entire fifth zone 90 of the spectacle lens 70 (hereinafter referred to as the vertical modulation function 1041),

[0484] - The horizontal axis curve 1042 of the modulation transfer function calculated over the entire sixth zone 92 of the first peripheral zone of the spectacle lens 70 (hereinafter referred to as the horizontal modulation function 1042), and

[0485] - The vertical axis curve 1043 of the modulation transfer function calculated over the entire sixth zone 92 of the first peripheral zone of the spectacle lens 70 (hereinafter referred to as the vertical modulation function 1043).

[0486] The horizontal modulation transfer function 1040 and the horizontal modulation transfer function 1042 each exhibit a modulation rate.

[0487] At Figure 22 above, the modulation rate of the horizontal modulation transfer function 1040 and the modulation rate of the horizontal modulation transfer function 1042 differ by less than 15% in the spatial frequency range between 0 and 30 cycles / degree, typically between 0 and 5 cycles / degree, between 5 and 10 cycles / degree, between 10 and 15 cycles / degree, between 15 and 20 cycles / degree, and between 20 and 30 cycles / degree.

[0488] Thus, the modulation rates of the horizontal modulation transfer functions 1040, 1042 are almost the same in the spatial frequency range between 0 and 30 cycles / degree, typically between 0 and 5 cycles / degree, between 5 and 10 cycles / degree, between 10 and 15 cycles / degree, between 15 and 20 cycles / degree, and between 20 and 30 cycles / degree per degree, with a tolerance of less than 5%.

[0489] In addition, the vertical modulation transfer function 1041 and the vertical modulation transfer function 1043 each exhibit a modulation rate.

[0490] At Figure 22 the modulation rate of the vertical modulation transfer function 1041 and the modulation rate of the vertical modulation transfer function 1043 differ by less than 10% over a spatial frequency range between 0 and 30 cycles / degree, typically between 0 and 5 cycles / degree, between 5 and 10 cycles / degree, between 10 and 15 cycles / degree, between 15 and 20 cycles / degree, and between 20 and 30 cycles / degree.

[0491] Thus, the modulation rates of the vertical modulation transfer functions 1041, 1043 are nearly the same over a spatial frequency range between 0 and 30 cycles / degree, typically between 0 and 5 cycles / degree, between 5 and 10 cycles / degree, between 10 and 15 cycles / degree, between 15 and 20 cycles / degree, and between 20 and 30 cycles / degree per degree, with a tolerance of less than 10%.

[0492] Method for determining spectacle lenses

[0493] The invention also relates to a computer-implemented method for determining an ophthalmic lens as disclosed above. The ophthalmic lens is intended to be worn by a wearer.

[0494] The computer-implemented method comprises:

[0495] - Defining a first zone that includes a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone;

[0496] - Defining a second zone that includes a plurality of micro-optical elements arranged to cover at least 30% of the total area of the second zone;

[0497] The first zone and the second zone are different;

[0498] - Determining the shape, size, and position of each micro-optical element in the first zone and the second zone such that the first zone and the second zone have respective modulation transfer functions that provide nearly the same respective modulation rates for each frequency within a first predetermined spatial frequency range, with a tolerance of less than 40%.

[0499] The first zone is different from the second zone if at least a portion of the first zone is not also a portion of the second zone, or if at least a portion of the second zone is not also a portion of the first zone.

[0500] For example, this may occur if there is the following situation:

[0501] - The center of the first zone is located at a position different from the center of the second zone. For example, if they are spaced apart by at least 0.5 mm,

[0502] - The shape of the first zone is different from the shape of the second zone,

[0503] - The size of the first zone is different from the size of the second zone,

[0504] - The orientation of the first zone is different from the orientation of the second zone.

[0505] Among these conditions, only one condition is a necessary condition for making the first zone different from the second zone. For example, it is possible to have a first zone and a second zone with the same shape and size. If another condition is met, for example, if the center of the first zone is not juxtaposed with the center of the second zone, then these zones will be different.

[0506] Typically, this computer-implemented method is successively performed by changing the optical characteristics of the micro-optical elements of the first zone and the second zone and by comparing the modulation transfer functions of the first zone and the second zone. If the modulation rate of the modulation transfer function of the first zone differs by less than 40% (preferably less than 20%) within a given spatial frequency range, then it is verified that the optical characteristics of the micro-optical elements of the first zone and the second zone are those of the micro-optical elements of the first zone and the second zone of the manufactured spectacle lens. When verifying the micro-optical elements of the first zone and the second zone, this computer-implemented method is configured to spatially scan the surface of the optical design of the spectacle lens by adding a third zone (as described above) arranged around the first zone and a fourth zone (as described above) arranged around the second zone. Typically, in this case, a determination step is performed on the third zone and the fourth zone. Again, two other zones, namely a fifth zone and a sixth zone, are defined as described above, and then the optical characteristics of these zones are determined as for the first zone and the second zone. Thus, a plurality of zones are successively defined to determine the optical design of the micro-optical elements covering the surface of the spectacle lens.

[0507] The computer-implemented method disclosed above is typically used to manufacture spectacle lenses (i.e., physical lens elements). Typically, the method for manufacturing spectacle lenses includes:

[0508] - A step of determining the design of the spectacle lens using the computer-implemented method as described above,

[0509] - A step of manufacturing the spectacle lens following this design.

[0510] Figure 23 A computer-implemented method 100 for determining a spectacle lens 10, 30, 40, 70 as disclosed in the first example, second example, third example, fourth example, fifth example, or sixth example above is shown.

[0511] The spectacle lenses 10, 30, 40, 70 are intended to be worn by a wearer and are preferably corrective spectacle lenses 10, 30, 40, 70.

[0512] A pair of spectacle lenses 10, 30, 40, 70 is intended to be integrated into the frame 20 of the spectacle or eye-wear disclosed above.

[0513] The computer-implemented method 100 comprises:

[0514] - defining a first zone E1 21, 31, 51, 59, 67, 81 which comprises a plurality of micro-optical elements 13, 43, 53, 63, 73, the plurality of micro-optical elements being arranged to cover at least 30% of the total area of the first zone 21, 31, 51, 59, 67, 81;

[0515] - defining a second zone E2 23, 33, 53, 61, 69, 85 which comprises a plurality of micro-optical elements 13, 43, 53, 63, 73, the plurality of micro-optical elements being arranged to cover at least 30% of the total area of the second zone 23, 33, 53, 61, 69, 85.

[0516] The first zone 21, 31, 51, 59, 67, 81 and the second zone 23, 33, 53, 61, 69, 85 are different.

[0517] - determining E30 the shape, size and position of each micro-optical element in the first zone 21, 31, 51, 59, 67, 81 and the second zone 23, 33, 53 such that the first zone has a modulation transfer function and the second zone has a modulation transfer function, and for a first predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by less than 40%.

[0518] In the present disclosure, the method 100 is implemented by a computer. The computer may be a processor, a computing module or a calculator or a computing unit. Typically, the computer comprises a processor, a memory and a number of input and output interfaces. Thus, the defining step E1, the defining step E2 and the determining step E30 may be implemented by a single computing module, or may each be implemented by a plurality of separate computing modules communicating with each other via a direct link or a network link.

[0519] Preliminary step E0

[0520] In the present example, the method 100 may comprise a preliminary step E0 of defining a preliminary optical design of the spectacle lens. In this preliminary step E0 of defining, the preliminary lens optical design is adapted to provide the above-mentioned macroscopic optical functions of a spectacle lens having a prescription refractive power. For example, the preliminary lens optical design includes the geometry of the front or back or both surfaces, typically the radius of curvature of one or both surfaces.

[0521] In addition, in the preliminary optical design, the micro-optical elements can be defined. In other words, this means that the preliminary optical design includes the micro-optical functions disclosed above and thus includes the preliminary optical design of the micro-optical elements.

[0522] The preliminary lens optical design can further include:

[0523] - the positions and sizes of different zones of the spectacle lens (e.g., the central zone, the first peripheral zone, and the second peripheral zone),

[0524] - the optical design of the micro-optical elements included in the first peripheral zone,

[0525] - the initial quantity of the micro-optical elements in each zone,

[0526] - the initial values of the micro-optical elements in each zone for selecting one or several of the following optical characteristics:

[0527] - diopter;

[0528] - geometry, i.e., the shape of the surface of the micro-optical element;

[0529] - refractive, diffractive, or diffusive optical functions;

[0530] - focal length;

[0531] - diameter or size;

[0532] - position.

[0533] Thus, in this example, the preliminary optical design of the spectacle lens includes a central zone without micro-optical elements, a first peripheral zone (including micro-optical elements), and a second peripheral zone without micro-optical elements, as disclosed above. It also includes the preliminary optical lens design of the micro-optical elements included in the first peripheral zone.

[0534] For example, in this step E0, the micro-optical element may have a size (or diameter) that, when projected into the facial plane (perpendicular to the main axis of the spectacle lens), is fixed between 0.3 mm and 2 mm (e.g., including any value between 0.3 mm and 2.0 mm, such as any of the following values 0.30, 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, 1.00, 1.10, 1.20, 1.30, 1.40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00). The diameter of the micro-optical element may depend on the type of micro-optical element (refractive single focus or bifocal, spherical or aspherical or toric, diffractive or Pi Fresnel). Examples of diameter determination can be found in European application reference EP 3923061 A1, PCT application reference WO 2021 / 198362, PCT application reference WO 2019 / 206569 A1, and PCT application reference WO 2019166653 A1.

[0535] The micro-optical element may be configured to have a spherical power between 1 diopter and 20 diopters, preferably between 1 diopter and 10 diopters.

[0536] The defined micro-optical element may have a surface shape, such as a prism or spherical or aspherical or toric surface shape, as disclosed in the previous examples.

[0537] The micro-optical element may be a refractive micro-optical element, such as a single focus or bifocal micro-optical element. In a variant, they may be diffractive π-Fresnel microlenses or diffusive micro-optical elements arranged to scatter light, as described above.

[0538] In practice, in this step E0, these micro-optical elements have the same optical design in the preliminary optical lens design.

[0539] After defining the preliminary lens optical design of the spectacle lenses 10, 30, 40, 70, the method performs the step of defining the first zones 21, 31, 51, 59, 67, 81 of E1 and the step of defining the second zones 23, 33, 53, 61, 69, 85 of E2.

[0540] In practice, for the position of the micro-optical element, method 100 uses an orthogonal marker (O, x, y, z), where the origin coincides with the geometric center of the spectacle lenses 10, 30, 40, 70, the axes (x, y) are contained in the facial projection plane as disclosed above, and the axis z coincides with the main visual axis 1 of the spectacle lens.

[0541] Definition step E1

[0542] As disclosed above, in the defining step E1, the shape and / or size and / or center of the first zones 21, 31, 51, 59, 67, 81 can be defined.

[0543] For example, in the example disclosed above, the first zones 21, 31, 51, 59, 67, 81 can have a circular shape.

[0544] In this case, the diameter of the first zones 21, 31, 51, 59, 67, 81 can be between 4 mm and 8 mm. For example, this means that the diameter of the first zones 21, 31, 51, 59, 67, 81 can be 4 mm, or 5 mm, or 6 mm, or 7 mm or 8 mm. This allows for variations in pupil size to be taken into account.

[0545] Furthermore, as already disclosed in the above examples, the first zones 21, 31, 51, 59, 67, 81 can be centered on the optical axis of a micro-optical element, which is referred to as the reference micro-optical element of the first zone. Of course, in a variant, the first zone can be centered on a center that is offset by at least 0.5 mm from the optical axis of the micro-optical element included in the first zone, which is referred to as the reference micro-optical element of the first zone. In practice, in the latter case, the center of the first zones 21, 31, 51, 59, 67, 81 can be between two adjacent micro-optical elements of the first zone, one of which corresponds to the reference micro-optical element.

[0546] As already disclosed in several examples, the reference micro-optical element of a given zone has a spatial position on the lens element. Here, the reference micro-optical element is included in the first peripheral zone of the spectacle lens. In other words, this means that the reference micro-optical element is not centered on the center of the spectacle lens.

[0547] Definition step E2

[0548] Similarly, in the defining step E2, the shape and / or size and / or center of the second zones 23, 33, 53, 61, 69, 85 can be defined.

[0549] For example, in the example disclosed above, the second zones 23, 33, 53, 61, 69, 85 can have a circular shape.

[0550] In this case, the diameter of the second zones 23, 33, 53, 61, 69, 85 can be between 4 mm and 8 mm. For example, this means that the diameter of the second zones 23, 33, 53, 61, 69, 85 can be 4 mm, or 5 mm, or 6 mm, or 7 mm or 8 mm.

[0551] Furthermore, as already disclosed in the above examples, the second zones 23, 33, 53, 61, 69, 85 may be centered on the optical axis of a micro-optical element, which is referred to as the reference micro-optical element of the second zone. Of course, in a variant, the second zone may be centered on a center that is offset by at least 0.5 mm from the optical axis of the micro-optical elements included in the second zone, which is referred to as the reference micro-optical element of the second zone. In practice, in the latter case, the center of the second zones 23, 33, 53, 61, 69, 85 may be between two adjacent micro-optical elements of the second zone, one of the two micro-optical elements corresponding to the reference micro-optical element.

[0552] In the present disclosure, the second zones 23, 33, 53, 61, 69, 85 are different from the first zones 21, 31, 51, 59, 67, 81, as already disclosed above.

[0553] For example, in the first example, the second zone 23 includes a center u23, the spatial position of which on the spectacle lens 20 is different from the spatial position of the center u1 of the first zone 21. Typically, in this example, the center of the second zone 23 is between two micro-optical elements 13, and the optical element 13a corresponds to the reference micro-optical element. In other words, in this case, this means that the center of the second zone 23 is offset from the center of the first zone by a specific distance, which is defined here by the distance between two adjacent circles.

[0554] By this arrangement, this means that the method according to the invention uses two zones with different spatial positions on the spectacle lens 10, thereby improving the determination of the optical lens design of the spectacle lens. In fact, the optical lens design of the spectacle is designed more accurately, thereby improving the vision correction, visual acuity, and myopia discomfort and evolution control of the lens design obtained by the method according to the present disclosure.

[0555] Of course, as shown in the third, fourth, and fifth examples, the distance between the center of the first zones 31, 51, 59, 67, 81 and the center of the second zones 33, 53, 61, 69, 85 may be defined as the space between two adjacent micro-optical elements. In this case, the first zones 31, 51, 59, 67, 81 may be centered on a micro-optical element, and the second zones 33, 53, 61, 69, 85 may be centered on a point located between two adjacent micro-optical elements. In a preferred embodiment, one of the two micro-optical elements is the micro-optical element on which the first zones 31, 51, 59, 67, 8 are centered. This arrangement makes it possible to easily find the positions of the two zones while allowing an optical lens design with good optical performance as disclosed above to be obtained.

[0556] In the example disclosed above, the first zone and the second zone have the same size, where they both have a diameter of 4 mm, but they have different spatial positions on the spectacle lens.

[0557] Of course, in a variant, the first zones 21, 31, 51, 59, 67, 81 and the second zones 23, 33, 53, 61, 69, 85 can be concentric. Thus, in this case, the size (here, the diameter in the case of a circular shape) of the first zones 21, 31, 51, 59, 67, 81 can be different from the size (here the diameter) of the second zones 23, 33, 53, 61, 69, 85.

[0558] For this variant, the diameter of the first zones 21, 31, 51, 59, 67, 81 can be 4 mm, while the diameter of the second zones 23, 33, 53, 61, 69, 85 can be 6 mm or 8 mm in diameter.

[0559] Determination step E3

[0560] In determination step E3, the shape and / or size and / or position of each micro-optical element in the first zones 21, 31, 51, 59, 67, 81, and the shape and / or size and / or position of each micro-optical element in the second zones 23, 33, 53, 61, 69, 85 are determined.

[0561] In practice, in determination step E3, the modulation transfer function is calculated over the entire first zones 21, 31, 51, 59, 67, 81 of the optical lens design of the spectacle lenses 10, 30, 40, 70, and the modulation transfer function is calculated over its entire second zones 23, 33, 53, 61, 69, 85. Then, the modulation transfer function of the first zones 21, 31, 51, 59, 67, 81 is compared with the modulation transfer function of the second zones 23, 33, 53, 61, 69, 85.

[0562] In practice, the modulation transfer function of the first zones 21, 31, 51, 59, 67, 81 is compared with the modulation transfer function of the second zones 23, 33, 53, 61, 69, 8 over at least one specific spatial frequency range.

[0563] In an embodiment, the modulation transfer functions of the two regions are compared over two particular frequency ranges, which are hereinafter referred to as a first predetermined spatial frequency range and a second predetermined spatial frequency range. For example, on the one hand, for the first predetermined spatial frequency range, it is compared whether the difference between the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 and the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 8 is less than a first level, which is fixed at 40% (or preferably fixed at 20%) in this example and corresponds to an index (hereinafter referred to as the first index). It should be noted that the values of the two modulation transfer functions compared in the determination step E3 are values associated with the same spatial frequency.

[0564] On the other hand, for the second predetermined spatial frequency range, it is compared whether the difference between the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 and the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 8 exceeds a second level, which is fixed at 10% here and corresponds to an index (hereinafter referred to as the second index).

[0565] In practice, the first spatial frequency range is, for example, between 1 and 5 cycles / degree and the second spatial frequency range is between 15 and 20 cycles / degree, or the second spatial frequency range is between 1 and 5 cycles / degree and the first spatial frequency range is between 15 and 20 cycles / degree.

[0566] Typically, the selection of a particular spatial frequency range is such that it allows optimizing the optical design of the spectacle lenses for a particular visual task (such as reading activities). Generally, low spatial frequencies (i.e., below 10 cycles / degree) allow the reader to very quickly see words, the rough form of the words, and the lines, while higher spatial frequencies (above 10 cycles / degree) allow the reader to see the fine details of the words (such as the exact form and position of the letters), which are used to obtain the meaning of the words and sentences.

[0567] Of course, as disclosed in the above examples, the modulation transfer functions can be calculated and compared for other spatial frequency ranges.

[0568] In an embodiment, the first predetermined spatial frequency ranges are similar, thus allowing defining two indices for the same spatial frequency range, thereby improving the determination of the optical design of the micro-optical elements in the first and second regions.

[0569] In method 100, if the value of the modulation transfer function of the first regions 21, 31, 51, 59, 67, 81 obtained for a first predetermined spatial frequency range differs from the value of the modulation transfer function of the second regions 23, 33, 53, 61, 69, 85 by more than 40%, then the optical characteristics of the micro-optical elements in at least one of these regions are changed. For a given region, the computer can change the optical characteristics of each micro-optical element in the given region individually, or can change at least a portion of the optical characteristics of the micro-optical elements in the given region simultaneously. This means that the modification can be performed individually or for multiple micro-optical elements in the given region.

[0570] For example, this means changing the size and / or shape and / or position of the micro-optical elements in the first regions 21, 31, 51, 59, 67, 81, while the shape, size, and position of the micro-optical elements in the second regions 23, 33, 53, 61, 69, 85 can be maintained. In a preferred embodiment, the size and / or shape and / or position of the micro-optical elements in the second regions 23, 33, 53, 61, 69, 85 and in the first regions 21, 31, 51, 59, 67, 81 are changed.

[0571] This modification of the optical characteristics of the micro-optical elements in the first regions 21, 31, 51, 59, 67, 81 and in the second regions 23, 33, 53, 61, 69, 85 can be different or, in a preferred embodiment, can be similar. This means that the computer changes the optical characteristics of the micro-optical elements in the first region and in the second region similarly. This enables a uniform optical lens design of the spectacle lens to be obtained.

[0572] In contrast, if the value of the modulation transfer function of the first regions 21, 31, 51, 59, 67, 81 obtained for a first predetermined spatial frequency range differs from the value of the modulation transfer function of the second regions 23, 33, 53, 61, 69, 85 by less than 40% (or by less than 20%), this means that a first criterion is met (here corresponding to 40% or 20%). Unless a second predetermined spatial frequency range is defined, the determination step E30 stops. In this case, the computer compares the values of these two modulation transfer functions over the second predetermined spatial frequency range.

[0573] For example, if the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 obtained for a second predetermined spatial frequency range differ from the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 85 by less than 10%, then the optical characteristics of the micro-optical elements in at least one of these regions are changed. In contrast, if the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 obtained for a second predetermined spatial frequency range differ from the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 85 by more than 10%, this means that the second criterion (here corresponding to 10%) is reached. The determination step E30 stops.

[0574] Thus, according to the embodiment, this means that the determination step E30 works as an iterative process and may include the following steps:

[0575] i) Determine E31 the modulation of the first regions 21, 31, 51, 59, 67, 81 and the second regions 23, 33, 53, 61, 69, 85,

[0576] ii) Check E32 for a first predetermined spatial frequency range whether the comparison between the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 and the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 85 reaches a first criterion, and / or for a second predetermined spatial frequency range whether the comparison between the values of the modulation transfer functions of the first regions 21, 31, 51, 59, 67, 81 and the values of the modulation transfer functions of the second regions 23, 33, 53, 61, 69, 85 reaches a second criterion,

[0577] - If the first criterion is not met and / or if the second criterion is not met, then:

[0578] ii1) Modify (also referred to as change) the shape and / or size and / or position of the micro-optical elements in the first regions 21, 31, 51, 59, 67, 81, and / or

[0579] ii2) Modify (also referred to as change) the shape and / or size and / or position of the micro-optical elements in the second regions 23, 33, 53, 61, 69, 85, and

[0580] ii3) Repeat steps E31 and E32.

[0581] The iterative optimization process in this disclosure is an iterative loop and uses an optimization method (such as gradient descent or Newton's algorithm) to find the optical characteristics of the micro-optical elements in the first regions 21, 31, 51, 59, 67, 81 and the second regions 23, 33, 53, 61, 69, 85 that satisfy the criteria defined in the iterative optimization process.

[0582] In the modification step applied to the first zones 21, 31, 51, 59, 67, 81 and the second zones 23, 33, 53, 61, 69, 85, the optical characteristics value (here the shape and / or size and / or position) of the micro-optical elements in the first and second zones is changed by changing it with another value. For example, the optical characteristics are modified by decreasing or increasing the value of the current optical characteristics in steps of 0.1 or 0.5. In some embodiments, the modification of the size, shape, position occurs randomly, or can be automatically determined by programming the method (gradient descent or Newton algorithm) in this way. This allows finding the most suitable value of the optical characteristics of the micro-optical elements in the first zones 21, 31, 51, 59, 67, 81 and the second zones 23, 33, 53, 61, 69, 85.

[0583] In the present disclosure, the modified optical characteristics of the micro-optical elements include the size and / or shape and / or position of the micro-optical elements in a given zone. However, it can also include other optical characteristics, such as diopter, refractive, diffractive or diffusive optical functions, the focal length of the micro-optical elements in a given zone. Additionally or alternatively, it can be the density of the micro-optical elements defined in the first zones 21, 31, 51, 59, 67, 81 and / or defined in the second zones, and this density can be changed in the modification step. In one embodiment, the computer is configured to first determine or change the size, position and then the shape of the micro-optical elements in a given zone. Then, the computer can change the density of the micro-optical elements in the given zone, the diopter of the focal length, the refractive, diffusive or diffractive optical functions.

[0584] As explained above, each index here is a threshold, here defined as 40% (or 20%) for the first index or 10% for the second index. Thus, this means that when the first index and optionally the second index are reached in the checking step, the determination step E30 stops.

[0585] Additionally, in addition to the above first index and / or second index, the optimization process can also include a stop index corresponding to the number of iterations. The stop index corresponds to an additional index and is used together with the indices disclosed above. The stop index allows stopping the iterative optimization process when at least one of the indices explained above is not reached (here when the threshold is not reached). As a non-limiting example, for example, when defining the first zones 21, 31, 51, 59, 67, 81 and the second zones, the number of iterations can be set between 10 and 2000 (for example, between 10 and 100). In an embodiment of the iterative optimization process, when the current iteration reaches the set number of iterations, the optimization process ends even if at least one of the indices explained above is not satisfied.

[0586] In the checking step E32, if at least one of these criteria is not met, the modification (or change) step (which is included in the checking step E32) and steps E31 and E32 are iterated until at least one (preferably two) criteria are met.

[0587] In one embodiment, for the second spatial frequency range, the determination step may stop even if the second criterion is not reached. In fact, in this case, this would mean that the modulation transfer function of the first zones 21, 31, 51, 59, 67, 81 is almost the same as the modulation transfer function of the second zone.

[0588] In method 100, if at least one of these criteria is met, for example when the result of the comparison is lower or higher than a predefined threshold, or when the current iteration reaches a set number of iterations, the optimization loop of the determination step E30 ends. This means that the micro-optical elements included in the first zones 21, 31, 51, 59, 67, 81 have the optical characteristics determined at the end of the checking step of the determination step E3. Similarly, the optical characteristics of the micro-optical elements included in the second zone have the optical characteristics determined at the end of the checking step of the determination step E3.

[0589] Re-iteration

[0590] In one embodiment, method 100 may also perform other steps to spatially scan the surface of the spectacle lenses 10, 30, 40, 70. For example, method 100 may include a step of defining a first other zone E111 and / or a step of defining a second other zone E222. These steps E111, E222 are implemented in a manner similar to the defining steps E1 and E2 explained above.

[0591] In the defining step E111, the computer defines a first other zone on the optical lens design of the spectacle lens, the first other zone being different from the first zone, the second zone, and the second other zone. Similarly, in the defining step E222, the computer defines a second other zone on the optical lens design of the spectacle lens, the second other zone being different from the second zone, the first zone, and the first other zone.

[0592] In practice, the first other zone means that this new zone (referred to as the first other zone) includes at least one of the following characteristics:

[0593] - The center of the first other zone is located at a position different from the center of the second other zone and / or the first zone and / or the second zone. For example, they may be spaced apart by at least 0.5 mm.

[0594] - The shape of the first other zone is different from the shape of the second other zone and / or the first zone and / or the second zone.

[0595] - The size of the first other region is different from the size of the second other region and / or the first region and / or the second region,

[0596] - The orientation of the first other region is different from the orientation of the second other region and / or the first region and / or the second region.

[0597] This also applies to the second other region.

[0598] For example, we understand that the first other region can correspond to:

[0599] - The third region or the fifth region disclosed in the second example and the sixth example, or

[0600] - The third region of the third example, the fourth example, or the fifth example.

[0601] Similarly, we understand that the second other region can correspond to:

[0602] - The fourth region or the sixth region disclosed in the second example and the sixth example, or

[0603] - The third region of the third, fourth, and fifth examples.

[0604] It can be seen that for the second example and the sixth example, two new other regions are defined, and thus the computer performs steps E111 and E222.

[0605] Then, the computer also iterates the new determination step E300 to determine the optical characteristics of the micro-optical elements in the first other region and / or the second other region. This step E300 is implemented in a manner similar to the determination steps explained above.

[0606] In practice, when two new regions are defined, in the determination step E300, the computer calculates the iterative process (determination step E331) disclosed above for the first other region and the second other region. This means that the computer calculates the modulation transfer function of the first other region and the modulation transfer function of the second other region in the calculation step, and then compares (in the checking step E332) the values of the two determined modulation transfer functions in the first spatial frequency range and / or in the second spatial frequency range.

[0607] In the checking step E332, if the first criterion and / or the second criterion are not met, the computer modifies the shape and / or position and / or size of the two new regions, and iterates the determination step E331 and the checking step E332 again until at least one of these criteria is met.

[0608] In the checking step E332, if the first criterion and / or the second criterion are met, steps E111, E222, and E300 are iteratively performed on the new first other region and the new second other region. Typically, this new first other region may correspond to the fifth region of the second and sixth examples, and this new second other region may correspond to the sixth region of the second and sixth examples.

[0609] This method enables the spatial scanning of the optical design of spectacle lenses. Thus, with this method, all the parameters of the spectacle lenses (radius of curvature of the spectacle lenses, prescription, etc.) are taken into account. This enables the final lens design of the spectacle lenses that is fully optimized and very uniform over the entire surface of the spectacle lenses to be obtained. Thereby, the desired optical quality and specificity of this design are improved.

[0610] It can be seen that for the third, fourth, and fifth examples, only the new other regions are defined, and thus only the defining step E111 is calculated.

[0611] When only one new region (referred to as the first other region) is defined, in the determining step E300, the computer performs the iterative process disclosed above for the first other region and the first or second region. This means that the computer calculates the modulation transfer function of the first or second region and the modulation transfer function of the first other region in the calculation step, and then compares (in the checking step) the values of the two determined modulation transfer functions in the first spatial frequency range and / or in the second spatial frequency range.

[0612] If the first criterion and / or the second criterion are not met, the computer modifies the shape and / or position and / or size of the first other region and the first or second region, and then iteratively performs the determining step and the checking step until at least one of these criteria is met.

[0613] Therefore, in this embodiment, the optical design of the spectacle lenses is determined from at least three different regions. Thus, with this embodiment, the lens design of the spectacle lenses can be determined more quickly, while allowing for a good compromise between visual acuity and myopia discomfort for the spectacle lenses.

[0614] Of course, the determining step E300 can be iteratively performed on the new other regions in order to more accurately scan the surface of the spectacle lenses.

[0615] When the iterative process ends, the design of the micro-optical elements in the calculated regions is fixed.

[0616] In one embodiment, since the modification of the optical characteristics of the micro-optical elements is similar for different regions, the computer assigns the optical characteristics determined at the end of the determining step E30 or E300 to all the micro-optical elements of the spectacle lenses.

[0617] Method 100 enables obtaining the lens design of each micro-optical element on the surface of an ophthalmic lens. The lens designs of the micro-optical elements have been optimized in different zones of the ophthalmic lens. This enables other parameters to be taken into account during the optimization process, such as the radius of curvature, the variation of the focal point of the ophthalmic lens, the refractive power correction of the ophthalmic lens.

[0618] Of course, method 100 may include the step of providing the final lens design of the E5 ophthalmic lens. In this example, the final lens design of the ophthalmic lens is based on the values of the optical characteristics of the micro-optical elements determined for all zones calculated during the optimization process. It may also be based on a preliminary lens optical design (e.g., by considering the macroscopic optical function of the ophthalmic lens, and / or the geometry of the ophthalmic lens, and / or the position and / or size and shape of the first, second, and third zones, etc.). The final lens design corresponds to the optical design of the ophthalmic lens intended to be worn by the wearer.

[0619] Manufacturing step

[0620] Figure 24 Method 200 for manufacturing an ophthalmic lens (i.e., a physical lens element) intended to be worn by a wearer is shown. As Figure 1 shown, the ophthalmic lens may be mounted on a frame 20.

[0621] Method 200 includes all the steps of method 100 disclosed above. Typically, method 200 for manufacturing an ophthalmic lens includes:

[0622] - a step of using a computer-implemented method to determine the design of the E1111 ophthalmic lens by using method 100 disclosed above,

[0623] - a step of manufacturing the E1112 ophthalmic lens following the design.

Claims

1. An eyeglass lens, the eyeglass lens comprising at least: - A first zone, the first zone including a plurality of micro-optical elements, the plurality of micro-optical elements being arranged to cover at least 30% of the total area of the first zone, and - A second zone, the second zone including a plurality of micro-optical elements, the plurality of micro-optical elements being arranged to cover at least 30% of the total area of the second zone, wherein the first zone is different from the second zone, and wherein the micro-optical elements of the first zone and the second zone are arranged such that for a predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by less than 40%.

2. The eyeglass lens according to claim 1, the predetermined spatial frequency range is a first predetermined spatial frequency range, Among them, the micro-optical elements of the first zone and the micro-optical elements of the second zone are arranged such that: for a second predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by more than 10%.

3. The eyeglass lens according to claim 2, wherein: - The first spatial frequency range is between 1 and 5 cycles / degree, and the second spatial frequency range is between 15 and 20 cycles / degree, or - The second spatial frequency range is between 1 and 5 cycles / degree, and the first spatial frequency range is between 15 and 20 cycles / degree.

4. The spectacle lens according to any one of claims 1 to 3, wherein, The projection of the first zone on a plane perpendicular to the optical axis of the eyeglass lens presents a circular profile and has a diameter between 2 and 20 millimeters.

5. The spectacle lens according to any one of claims 1 to 4, wherein, The projection of the second zone on a plane perpendicular to the optical axis of the eyeglass lens presents a circular profile and has a diameter between 2 and 20 millimeters.

6. The spectacle lens according to any one of claims 1 to 5, wherein, The projection of the first zone on a plane perpendicular to the optical axis of the eyeglass lens and the projection of the second zone on the plane have different shapes or different sizes.

7. The spectacle lens according to any one of claims 1 to 6, wherein, The projection of the first zone on a plane perpendicular to the optical axis of the eyeglass lens and the projection of the second zone on the plane are concentric.

8. The spectacle lens according to any one of claims 1 to 6, wherein, The geometric center of the projection of the first zone on a plane perpendicular to the optical axis of the eyeglass lens is spaced apart from the geometric center of the projection of the second zone on the plane by at least 0.5 millimeters.

9. The eyeglass lens according to any one of claims 1 to 8, wherein: - The density of the micro-optical elements of the first zone differs from the density of the micro-optical elements of the second zone by less than 5%, and / or - The average optical power of at least one micro-optical element of the first zone is different from the average optical power of at least one micro-optical element of the second zone, and / or - The optical function of at least one micro-optical element of the first zone is different from the optical function of at least one micro-optical element of the second zone, and / or - The diameter of at least one micro-optical element of the first zone differs from the diameter of at least one micro-optical element of the second zone by less than 5%.

10. The eyeglass lens according to any one of claims 1 to 9, Among them, For a spatial frequency between 1 and 5 cycles / degree, the value of the modulation transfer function of the first zone is higher than 0.3, for example higher than 0.4 or higher than 0.5, and For a spatial frequency between 15 and 20 cycles / degree, the value of the modulation transfer function of the first zone is higher than 0.05, for example higher than 0.1, for example higher than 0.5, and / or wherein, for a spatial frequency between 1 and 5 cycles / degree, the value of the modulation transfer function of the second zone is higher than 0.3, for example higher than 0.4 or higher than 0.5, and For a spatial frequency between 15 and 20 cycles / degree, the value of the modulation transfer function of the second zone is higher than 0.05, for example higher than 0.1 or, for example higher than 0.

5.

11. The spectacle lens according to any one of claims 1 to 10, Among them, at least one of the micro-optical elements in the first zone has an average optical power value between 1 diopter and 10 diopters, and / or at least one of the micro-optical elements in the second zone has an average optical power value between 1 diopter and 10 diopters.

12. The spectacle lens according to any one of claims 1 and 11, wherein, The micro-optical elements in the first zone are arranged according to a first pattern of a micro-optical element including at least two first concentric circles, and a first circle of the at least two first concentric circles is spaced apart from a second circle of the at least two first concentric circles by at least 1 mm, and / or The micro-optical elements in the second zone are arranged according to a second pattern of a micro-optical element including at least two second concentric circles, and a first circle of the at least two second concentric circles is spaced apart from a second circle of the at least two second concentric circles by at least 1 mm.

13. A computer-implemented method for determining a spectacle lens intended to be worn on a wearer's eye, the method comprising: - defining a first zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the first zone; - defining a second zone including a plurality of micro-optical elements arranged to cover at least 30% of the total area of the second zone; the first zone is different from the second zone, - determining the shape, size and position of each micro-optical element in the first zone and in the second zone such that the first zone has a modulation transfer function and the second zone has a modulation transfer function, and for a first predetermined spatial frequency range, the value of the modulation transfer function of the first zone differs from the value of the modulation transfer function of the second zone by less than 40%.

14. The computer-implemented method according to claim 13, wherein, The first zone differs from the second zone in at least one of the following elements: - the center of the first zone is located at a position different from the center of the second zone; - the shape of the first zone is different from the shape of the second zone; - the size of the first zone is different from the size of the second zone; - the orientation of the first zone is different from the orientation of the second zone.

15. The computer-implemented method according to any one of claims 13 to 14, wherein, For the first predetermined spatial frequency range, if the value of the modulation transfer function of the first region differs from the value of the modulation transfer function of the second region by more than 40%, the determining step includes changing the optical characteristics of the micro-optical elements in the first region and in the second region.

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