Spectacle lens to reduce the progression of myopia

Abstract

The present invention relates to a spectacle lens comprising one or more ring-shaped focusing structures, each having a corresponding width and a surface-based fill factor greater than 17% and equal to or less than 70% for said width in a range of 0.6 mm to 0.7 mm.

Description

[0001] The increasing prevalence of myopia in Southeast Asian countries not only represents a potential cost factor for the healthcare system, but also incurs immense costs for the economy and individuals through the purchase of corrective devices. In principle, existing myopia can be corrected with glasses, contact lenses, intraocular lenses, or refractive surgery. However, research shows that while these methods correct the refractive error itself, in many cases, particularly in children, a rapid progression of the spherical component of the refractive error is observed. Clinical data have shown, in particular, that refractive errors of -6 diopters or more lead to chorioretinal changes at the retinal level.In research on reducing the progression of myopia, various mechanisms of action have been investigated, and clinical studies have shown varying degrees of effectiveness. For spectacle lenses with a continuous increase in power towards the periphery along all meridians (such as lenses offered by the Carl Zeiss Vision Group under the trade name MyoVision), an efficiency of 30% in reducing axial length growth was demonstrated in defined groups of subjects (Sankaridurg, P., Donovan, L., Varnas, S., Ho, A., Chen, X., Martinez, A., Fisher, S., Lin, Z., Smith, EL, 3rd, Ge, J., & Holden, B. Spectacle lenses designed to reduce progression of myopia: 12-month results. Optom Vis Sci, 87 (9), 631-641). Other optical intervention methods using spectacle lenses have achieved significantly higher efficacy of up to 70% (see, e.g.,Bao J, Yang A, Huang Y, Li X, Pan Y, Ding C, Lim EW, Zheng J, Spiegel DP, Drobe B, Lu F, Chen H. One-year myopia control efficacy of spectacle lenses with aspherical lenslets. Br J Ophthalmol. 2021:318367). This efficacy could be demonstrated in clinical studies.

[0002] Especially with spectacle-based interventions, not only is good efficacy important, but also aesthetics and comfortable wearability. Ultimately, it has been shown that wearing spectacles for a longer period of time each day leads to greater effectiveness in reducing the progression of myopia.

[0003] The following mechanisms of action can generally be considered when performing interventions on spectacle lenses. 1. Under-occupancy or delay in accommodation 2. Peripheral blurriness 3. Simultaneous and alternating blurring, whereby the latter two mechanisms are partly used together, but the considerations of the present invention mainly focus on point 3.

[0004] EP 3561578 A1 reveals in Fig. 14a and Fig.14b and describes in section

[0102] a general spectacle lens with a clear zone and cylindrical concentric rings. The document does not contain any information on the dimensions of the cylindrical concentric rings. Section

[0161] discloses a preferred embodiment characterized in that in each circular zone with a radius between 2 and 4 mm and a geometric center located at a distance from the optical center of the spectacle lens greater than or equal to said radius + 5 mm, the ratio between the sum of the areas of the parts of the cylindrical concentric rings located within said circular zone and the area of ​​said circular zone is contained in a range between 20% and 70%. This ratio corresponds to EP3561578 A1 with the identification number.

[0005] WO 2019166659 A1 shows in Fig. 11a and Fig.11b and describes on page 20, lines 10 to 12 the same type of spectacle lenses as in Fig. 14a and Fig. 14b shown and described in

[0102] of EP 3561578 A1. On page 28, lines 13 to 18 of WO 2019166659 A1 it is described that the identification number, which is defined in the same way as in EP 3561578 A1, can be within the ranges of 20% to 70% or 30% to 60% or 40% to 50%.

[0006] Neither EP 3561578 A1 nor WO 2019166659 A1 specify concrete dimensions for the cylindrical concentric rings described above.

[0007] Furthermore, it was noted that a large number of wearers of spectacle lenses with cylindrical concentric rings, as described above with reference to EP 3561578 A1 and WO 2019166659 A1 respectively, complain of discomfort.

[0008] Besides the in Fig. 11a and Fig.The variant of spectacle lenses with concentric rings shown in Figure 11b of the application WO 2019166659 A1 discloses a spectacle lens with a plurality of concentric rings with ring-shaped and interconnected lenses. According to page 17, line 25 to page 19, line 8, a lens diameter is at least 0.8 mm. The characteristic figures defined on page 19 of the said document, i.e., the ratio between the sum of the areas of the parts of the cylindrical concentric rings located within the said circular zone and the area of ​​the said circular zone, are to be in the ranges of 20% and 70%, or 30% and 60%, or 40% and 50%.

[0009] WO2021069443 A1 discloses a computer-implemented method for characterizing the optical elements of a lens element customized for a person. The lens element comprises: a holder that includes a refractive area with a refractive power based on a prescription to correct an abnormal refraction of the person's eye. Furthermore, the lens element comprises a plurality of optical elements configured such that at least one of them slows, delays, or prevents the progression of the person's abnormal refraction.

[0010] CN10963925 A relates to a flexible, refractive film patch with a microstructure. The film strip can be applied to all types of spectacle lenses. The film patch has the properties of an ordinary film patch. In addition, the film strip has a certain refractive effect.

[0011] The spectacle lens can provide good refractive correction in the central area while simultaneously causing peripheral defocusing.

[0012] US2011051079 A1 discloses sets, kits, or inventories of contact lenses or spectacle lenses for myopia correction, as well as methods for their use, which do not require a physician to measure the peripheral refractive error in the eyes of myopic patients. Extensive studies have shown that lenses whose peripheral refractive power or defocus is set according to the central corrective power cover almost all normal myopia patients with a central refractive error of at most -6D. Sets, kits, and inventories, as well as examples of the lenses themselves, are disclosed along with methods of application.

[0013] EP3888894 A1 refers to microlenses arranged on a single-vision spectacle lens. The diffusion points can be microlenses that typically have a diameter on the order of one-tenth of a millimeter to about 1.1 millimeters and a height of about 1 micrometer. The refractive power is located in the center of the lens, while the microlenses form an array with a specific pattern.

[0014] WO2021069443 A1, on which the present invention is based, discloses in Fig. 1. A spectacle lens with a central optical area. The central optical area is a circular area with a defined radius of 9 mm. Outside the central optical area, the microstructures are arranged in a ring. The radial widths of the microstructures are defined in a range from 0.1 mm to 7 mm.

[0015] Some wearers of spectacle lenses with a large lens diameter report visual disturbances.

[0016] Therefore, an objective of the present invention is to present a spectacle lens that offers a good balance between the wearability of the lens and the reduction of myopia progression. Furthermore, the manufacture of the spectacle lens according to the invention with an annular defocusing structure is to be ensured.

[0017] The problem is solved by a spectacle lens according to claim 1.

[0018] EP3888894 A1, on which the present invention is also based, discloses in Fig. 9. A spectacle lens with a central optical area. Scattering structures are arranged outside the central optical area.

[0019] Some wearers of spectacle lenses with large diffusion structures report optical discomfort.

[0020] Therefore, an objective of the present invention is to provide a spectacle lens that offers a good balance between the wearability of the lens and the reduction of myopia progression. Furthermore, the manufacture of the spectacle lens according to the invention with an annular diffuse structure should be ensured.

[0021] The problem is solved by a spectacle lens according to claim 4.

[0022] Advantageous embodiments and further developments of the invention are the subject of the dependent claims.

[0023] The spectacle lens according to the invention comprises one or more ring-shaped defocusing structures or one or more ring-shaped diffuse structures, each with a width, and at least one additional feature from the following group of features: (i) a central free zone with a width of the central clear zone in a range of 6 mm to 9.4 mm, wherein the width is equal to or less than 0.7 mm; (ii) This width is less than 0.5 mm; (iii) a surface-based fill factor defined as a surface area ratio of the surface area of ​​an innermost of the one or more annular defocusing structures or of an innermost of the one or more annular diffuse structures and the sum of the surface area of ​​the innermost one or more annular defocusing structure(s) or of the innermost one or more annular diffuse structure(s) and the area of ​​a peripheral free zone, wherein the surface-based fill factor for the width of the one or more annular structure(s) or of the one further annular diffuse structure(s) in a range of 0.6 mm to 0.7 mm is greater than 17% and equal to or less than 70%. (iv) a surface-based fill factor defined as a surface area ratio of the surface area of ​​an innermost of the one or more annular defocusing structures or of an innermost of the one or more annular diffuse structures and the sum of the surface area of ​​the innermost one or more annular defocusing structure(s) or of the innermost one or more annular diffuse structure(s) and the area of ​​a peripheral free zone, wherein the surface-based fill factor for the width of the one or more annular structure(s) or of the one further annular diffuse structure(s) in a range of 0.5 mm to 0.6 mm is greater than 15% and equal to or less than 60%. (v) a surface-based fill factor defined as a surface area ratio of the surface area of ​​an innermost of one or more annular defocusing structures or of an innermost of one or more annular diffuse structures and a sum of the surface area of ​​the innermost one or more annular defocusing structure(s) or of the innermost one or more annular diffuse structure(s) and the area of ​​a peripheral free zone, wherein the surface-based fill factor is greater than 6% and equal to or less than 50% for the width of the one or more annular structure(s) or of the one further annular diffuse structure(s) less than 0.5 mm.

[0024] A spectacle lens within the meaning of the present invention is a spectacle lens that is worn in front of, but not in contact with, the eyeball (DIN ISO 13666:2019, section 3.5.2), wherein a spectacle lens is a spectacle lens that is intended to be used for measuring, correcting and / or protecting the eye or changing its appearance (DIN ISO 13666:2019, section 3.5.1).

[0025] A structure is considered ring-shaped if it surrounds a structure-free zone and there is a path within the structure that leads from a starting point within the structure around the structure-free zone and back to the starting point.

[0026] In the context of the present description, the term "annular defocusing structures" refers both to structures that form an annular focal line and to structures comprising a plurality of lenses that are adjacent to one another in such a way as to form a ring of interconnected lenses and create a plurality of (e.g., equidistantly arranged and preferably mainly linear or point-like) focal points along an annular line. The term "annular defocusing structures" also includes a cylindrical cross-sectional shape of the "annular defocusing structures" as described in Fig. 14a and Fig. shown in Figure 14b and described in sections

[102] of EP 3561578 A1. In other words, the term ‘ring-shaped defocusing structures’ also applies to some of the purely cylindrical concentric rings.

[0027] A structure with a ring-shaped focal line is found, for example, in Fig. 14a and Fig. 14b and in sections

[102] of EP 3561578 A1 as well as in Fig. 11a and Fig. 11b, page 20, lines 10-12 of WO 2019166659 A1 are described. Further variants of such structures, which form an annular focal line, are described in Fig. 1 of CN111103701 B as well as in Fig. 5A and Fig. 5B of US 2019 / 0227342 A1 revealed.

[0028] In the front view, i.e., viewed perpendicularly to the front surface of the spectacle lens, the ring does not have to be circular, but can also be non-circular, in particular elliptical or otherwise curved rings, as e.g. in Fig. 1 of CN 213659117 U shown, are possible.

[0029] The lenses do not necessarily have to be circular when viewed from the front, as described below. For example, such ring-shaped defocusing structures can include structures similar to those described in WO 2019166659 A1, p. 17, I. 25 - p. 19, I. 8 with reference to Fig. 1 are described, which is shown there.

[0030] In the context of the present invention, the term “lens plate” refers either to a small convex structure in the approximately spherical, ellipsoidal, sinusoidal or similar shape of a lens, provided on a surface of a spectacle lens and having lateral dimensions that are several orders of magnitude smaller than the dimensions of the spectacle lens itself, or to a small area with a refractive index distribution provided in a spectacle lens body, wherein the refractive index distribution has lateral dimensions that are at least several orders of magnitude smaller than the dimensions of the spectacle lens itself.

[0031] If the lenses are small convex structures, they are considered adjacent if there is a path between the centers of two lenses that does not pass through a region that exclusively has the shape of the surface on which the lenses are formed. If the lenses are refractive index distributions, they are considered adjacent if the path between the centers of two lenses does not pass through a region with the refractive index of the lens body.

[0032] In optics, diffuse structures (also called light diffusers or optical diffusers) are optical elements made of any material that scatter or disperse light in some way to transmit soft light. Diffuse light is easily achieved by reflecting light off a white surface, while more compact diffuse structures can utilize translucent materials such as polished glass, Teflon, holograms, opal glass, and grayed glass. Scattering can be achieved through scattering centers, which can be point-like, as disclosed, for example, in WO 2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438 A1, and WO 2020 / 014613 A1.

[0033] The term "width of an annular defocusing structure" refers to the extent of an annular defocusing structure perpendicular to its circumference, measured from its inner and outer points of attachment. Similarly, the term "width of an annular diffuse structure" refers to the extent of an annular diffuse structure perpendicular to its circumference, measured from its inner and outer points of attachment. The term "onset" refers to the first measurable position of an annular defocusing structure or an annular diffuse structure on the surface of a spectacle lens. In other words, "onset" refers to the position on the lens surface where, in the case of defocusing structures, the surface shape begins to deviate from the shape of the base lens surface, or, in the case of diffuse structures, where the contrast-reducing properties of the lens change relative to the base lens.Exemplary embodiments for determining the onset are shown in the . Fig. 2, Fig. 4 and Fig. Figure 6 illustrates this. The term “inner attachment” refers to the attachment on the side of the structure facing the center of the lens, and the term “outer attachment” refers to the attachment of the structure that lies away from the lens in the direction of the circumference.

[0034] In the context of this description, the term "clear zone" refers to a structure-free area of ​​a spectacle lens. It is designed so that it causes neither myopic defocus nor scattering in foveal vision when a wearer looks through the clear zone while the lens is positioned according to the prescribed wearing position. Furthermore, a clear zone can make it possible, if necessary, to achieve a focused image on the fovea through accommodation.

[0035] A central clear zone is a structure-free zone surrounded by a ring-shaped defocusing structure.

[0036] The optical center (DIN ISO 13666:2019, section 3.2.15) of a single-vision lens is usually located in the central clear zone. Progressive lenses can have more than one, in particular two, central clear zones, which are located, for example, in the near zone (DIN ISO 13666:2019, section 3.15.3) and in the distance zone (DIN ISO 13666:2019, section 3.15.1).

[0037] A “width of the clear zone” is a maximum extent of the beginning of the innermost ring-shaped defocusing structure or a maximum extent of the beginning of the innermost ring-shaped diffuse structure.

[0038] A central clear zone with a width ranging from 6 mm to 9.4 mm offers the advantage that a smaller clear zone, e.g., 6 mm, increases the likely effectiveness of the lens in slowing the progression of myopia for the wearer. However, this smaller clear zone also reduces the wearer's acceptance of the lens due to less comfort. Conversely, a larger clear zone, e.g., 9.4 mm, reduces the likely effectiveness of the lens in slowing the progression of myopia for the wearer. However, a larger clear zone also increases the wearer's acceptance of the lens due to greater comfort.

[0039] The term "fill factor" must be subdivided into "length-related fill factor" and "area-related fill factor." The length-related fill factor is used to determine the fill factor of a circular defocusing or diffuse structure. The area-related fill factor is used to determine the fill factor of an annular defocusing or diffuse structure.

[0040] The length-related fill factor is defined as the ratio between the width of the inner circular defocusing structure adjacent to a free zone (“width”) and the radial distance between the inner circular defocusing structure and the adjacent circular defocusing structure (“distance”): length based fill factor=widthpitch

[0041] A “pitch” is the distance between the beginning of two adjacent circular defocusing or diffuse structures.

[0042] The length-based fill factor has the advantage of defining the balance between wearability and the production of the spectacle lens according to the invention with circular defocusing or diffuse structures. A length-based fill factor of more than 60% leads to a reduction in the wearing comfort of the spectacle lens, but increases the likely effectiveness of the spectacle lens in reducing the progression of myopia in the wearer. A length-based fill factor of less than 40% leads to a reduction in the likely effectiveness of the spectacle lens in reducing the progression of myopia for the wearer, but increases the wearing comfort of the spectacle lens. In other words, a balanced relationship between wearing comfort and the production of the spectacle lens according to the invention is achieved with a length-based fill factor in the range of 40% to 60%. In particular, a length-based fill factor of 50% is preferred.

[0043] The area-related fill factor is determined by the area ratio between the area of ​​the innermost annular defocusing structure or the innermost annular diffuse structure and the sum of the area of ​​the innermost annular defocusing structure or the innermost annular diffuse structure and the area of ​​a peripheral clear zone. The term "innermost" describes the annular defocusing structure or the annular diffuse structure that is closest to the central clear zone. The term "peripheral clear zone" refers to the first clear zone adjacent to the central clear zone.

[0044] The surface of the innermost annular defocusing structure or the innermost annular diffuse structure is defined by an inner onset line and an outer onset line of the innermost annular defocusing structure or the innermost annular diffuse structure. The inner onset line runs along the inner onset of the innermost one or more annular defocusing structure(s) or the innermost one or more annular diffuse structure(s), surrounding the central clear zone. The outer onset line runs along the outer onset of the innermost one or more annular defocusing structure(s) or the innermost one or more annular diffuse structure(s), surrounding the peripheral clear zone.The inner attachment line and the outer attachment line of the innermost annular defocusing structure or the innermost annular diffuse structure enclose a surface area along the surface of the base spectacle lens without structures, wherein the surface area is the surface area of ​​the innermost annular defocusing structure or the innermost annular diffuse structure.

[0045] The surface of the peripheral clear zone is defined by the outer attachment line of the innermost annular focusing structure or the innermost annular diffuse structure and the inner attachment line of an adjacent annular defocusing structure or an adjacent annular diffuse structure. The inner attachment line of the adjacent one or more annular defocusing structure(s) or the adjacent one or more annular diffuse structure(s) runs along the inner attachment line of the adjacent one or more annular defocusing structure(s) or the adjacent one or more annular diffuse structure(s), with the inner attachment line surrounding the peripheral clear zone.

[0046] The outer line of attack of the innermost annular defocusing structure or the innermost annular diffuse structure and the inner line of attack of the adjacent annular defocusing structure or the adjacent annular diffuse structure enclose a surface area along the spectacle lens, the surface area being the surface area of ​​the peripheral clear zone.

[0047] The surface-based fill factor has the advantage of defining the balance between wearability and the manufacturing of the spectacle lens according to the invention with annular defocusing or diffuse structures. A surface-based fill factor of more than 59.2% leads to a reduction in the wearing comfort of the spectacle lens, but increases the likely effectiveness of the spectacle lens in reducing the progression of myopia for the wearer. A surface-based fill factor of less than 56.1% leads to a reduction in the likely effectiveness of the spectacle lens in reducing the progression of myopia for the wearer, but increases the wearing comfort of the spectacle lens. In other words, a well-defined balance between wearability and the manufacturing of the spectacle lens according to the invention is achieved with a surface-based fill factor in the range of 34.6–59.2%.In particular, a surface-based fill factor of 46.4 to 47.7% is preferred.

[0048] The problem described above is completely solved by a lens like the one described below. Since the intended wearers are children, the increased comfort and improved portability prevent the children from removing the lenses.

[0049] Preferred embodiments of a spectacle lens designed according to the concept of the invention can be characterized in that the width(s) of the annular defocusing structures or of the annular diffuse structures lies within at least one region of the following group of regions: (i) the width is greater than 0.2 mm and equal to or less than 0.7 mm; (ii) the width is greater than 0.3 mm and equal to or less than 0.7 mm; (iii) this width is equal to or less than 0.6 mm; (iv) the width is greater than 0.2 mm and equal to or less than 0.6 mm; (v) the width is greater than 0.3 mm and equal to or less than 0.6 mm; (vi) the said width is equal to or less than 0.5 mm; (vii) the width is greater than 0.2 mm and equal to or less than 0.5 mm; (viii) the width is greater than 0.3 mm and equal to or less than 0.5 mm.

[0050] The advantage lies in a balanced relationship between wearability and the manufacturing of the spectacle lens according to the invention. Reducing the width of a ring-shaped structure leads to greater wearing comfort of the spectacle lens. Increasing the width of a ring-shaped structure allows for simpler manufacturing of the spectacle lens.

[0051] In a further preferred embodiment of the invention, the spectacle lens is characterized in that it has a width of the central clear zone within at least one area of ​​the following group of areas: (i) the width of the central clear zone is greater than 6 mm and less than or equal to 7 mm; (ii) the width of the central clear zone is greater than 7 mm and less than or equal to 9.4 mm.

[0052] A central clear zone with a width of 6 mm to 7 mm has the advantage that a small clear zone, e.g., 6 mm, increases the likely effectiveness of the lens in slowing the progression of myopia in the wearer. At the same time, this small clear zone reduces the wearer's acceptance of the lens due to less comfort. A central clear zone with a width of 7 mm to 9.4 mm has the advantage that a larger clear zone, e.g., 9.4 mm, increases the wearer's acceptance of the lens due to greater comfort.

[0053] Another advantageous embodiment of a spectacle lens according to the present invention is characterized in that the one or more ring-shaped defocusing structures provide an additional refractive power compared to the central clear zone in at least one area of ​​the following group of areas: (i) the additional refractive power is greater than 6 diopters and equal to or less than 12 diopters; (ii) the additional refractive power is greater than 7 diopters and equal to or less than 11 diopters; (iii) the additional refractive power is greater than 8 diopters and equal to or less than 10 diopters.

[0054] Within the scope of this specification, the term "additional refractive power" refers to a focal power added to the focal power of a spectacle lens in at least one meridian, where the focal power of the spectacle lens, through accommodation, provides a focused image on the fovea, and the additional refractive power, when added to the focal power of the spectacle lens, causes myopic defocus. This additional power should not be confused with the additional power of a progressive lens.

[0055] The term “vertex power” is a collective term for the spherical vertex power, which focuses parallel light onto a paraxial pencil into a single focal point (and which is usually considered in the regulation with the value “Sph” or abbreviated “sph”), and the cylindrical vertex power of a spectacle lens, which focuses parallel light onto a paraxial pencil into two separate, mutually perpendicular line focal points (DIN ISO 13666:2019, section 3.10.2) and which is usually considered in the regulation by the “cylinder” value or, abbreviated, “cyl”.

[0056] The advantage of this further advantageous embodiment lies in defining the balance between wearability and the manufacturing of the spectacle lens according to the invention. An additional refractive power between 10 and 12 diopters increases the likely effectiveness of the spectacle lens in reducing the progression of myopia for the wearer. An additional power between 6 and 8 diopters increases the wearing comfort of the spectacle lens. In other words, a balanced relationship between wearing comfort and the manufacturing of the spectacle lens according to the invention is achieved with an additional refractive power in the range of 6 to 8 diopters. In particular, an additional power of 10 diopters is preferred.

[0057] The spectacle lens according to the invention can be provided in the form of computer-readable instructions for its manufacture, which are stored on a computer-readable data carrier.

[0058] The spectacle lens according to the invention can also be realized in the form of computer-readable data stored on a computer-readable data carrier.

[0059] The spectacle lens according to the invention can be provided in the form of computer-readable instructions for its manufacture, which are converted into a data carrier signal.

[0060] The spectacle lens according to the invention can also be implemented in the form of a data carrier signal.

[0061] The spectacle lens according to the present invention can be in the form of a numerical data set.

[0062] The spectacle lens according to the present invention can be in the form of a data signal that transmits a numerical data set.

[0063] The spectacle lens according to the invention can be designed in the form of a data carrier on which a numerical data set is stored.

[0064] The invention is described below by way of example with reference to the drawings. Fig. Figure 1 shows a single-vision spectacle lens according to a first embodiment of the present invention with a plurality of ring-shaped defocusing structures. Fig. Figure 2 shows a cross-sectional view of the single-vision lens according to Fig. 1, to demonstrate how the width of an annular defocusing structure, the distance between two adjacent annular defocusing structures, and the width of the central clear zone are determined. Fig. Figure 1 shows a coated single-vision spectacle lens according to a second embodiment of the present invention with a plurality of ring-shaped defocusing structures. Fig. Figure 4 shows a cross-sectional view of the single-vision spectacle lens according to Fig.3, to demonstrate how the width of an annular defocusing structure, the distance between two adjacent annular defocusing structures and the central clear zone can be determined in the presence of a coating. Fig. Figure 1 shows a single-vision spectacle lens according to a third embodiment of the present invention with a plurality of ring-shaped diffuse structures. Fig. shows a cross-sectional view of a single-vision spectacle lens according to Fig. , to demonstrate how the width of an annular diffuse structure, the distance between two adjacent annular diffuse structures, and the width of the central clear zone can be determined. Fig. shows a single-vision spectacle lens according to a fourth embodiment of the present invention with a plurality of ring-shaped defocusing structures. Fig.Figure 8 shows a single-vision spectacle lens according to a fifth embodiment of the present invention with a plurality of ring-shaped defocusing structures. Fig. Figure 9 shows a single-vision spectacle lens according to a sixth embodiment of the present invention with a plurality of ring-shaped defocusing structures. Fig. Figure 10 shows a progressive lens according to the present invention with a plurality of ring-shaped defocusing structures. Fig. Figure 11 shows a single-vision spectacle lens according to a further embodiment of the present invention with a plurality of ring-shaped defocusing structures, wherein the defocusing structures consist of a plurality of interconnected lenses.

[0065] A first exemplary embodiment of the present invention is described by reference to Fig. 1 and Fig.Figure 2 describes a single-vision spectacle lens 100. The single-vision spectacle lens 100 comprises a central clear zone 110. In this embodiment, the central clear zone 110 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 100 additionally comprises five circular defocusing structures 101 to 105 with the same cross-section. Circular means ring-shaped with a circular contour in front view.

[0066] The circular defocusing structures 101 to 105 are shaped to create an additional focal length of 12 diopters compared to the focal length of the central clear zone 110. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0067] The in the Fig. 1 and Fig. The single-vision lens shown, 100, has a diameter of 7 cm. Therefore, the lens 100 must be... Fig.The lens 100 is bent to fit into a suitable spectacle frame. The single-vision lens 100 comprises five circular defocusing structures 101 to 105. These circular focusing structures 101 to 105 are arranged concentrically around the optical center of the single-vision lens 100. Furthermore, the circular defocusing structure 101 surrounds the central clear zone 110 with a circular clear zone width cw110 of 7.0 mm. The width w101 of the circular defocusing structure 101 is 0.5 mm. The adjacent circular structure 102 is arranged concentrically to the inner circular structure 101 and surrounds the circular clear zone 110 with a distance p101 of 1.0 mm. The ratio of the width w101 to the distance p101 results in a length-related fill factor of 50.0% and an area-related fill factor of 46.9%.

[0068] Fig.Figure 1 shows a cross-sectional view of the single-vision spectacle lens 100. The front surface 131 and the back surface 133 of the single-vision spectacle lens 100 are spherical. Within the scope of the present invention, the shape of the front surface 131 and the back surface 133 of the single-vision spectacle lens 100 is not limited to a spherical shape, but can also be aspherical, toroidal, atoric, or even free-form to meet the individual needs of the wearer.

[0069] Fig. This shows how the inner approach io101 of a circular defocusing structure 101 and the outer approach oo101 of a circular defocusing structure 101, the width of a circular defocusing structure w101 to w103, the distance between two adjacent circular defocusing structures p101 and the central clear zone width cw110 can be determined. For the sake of simplicity, in Fig.only the three circular defocusing structures 101 to 103 are shown, while in Fig. Five circular defocusing structures are shown in Figures 101 to 105.

[0070] The determination of an inner and an outer onset of a circular defocusing structure is explained using the circular defocusing structure 101 as an example. The inner onset io101 of the circular defocusing structure 101 is a point directly adjacent to the central free zone 110. The outer onset oo101 of the circular defocusing structure 101 is a point located radially to the inner onset io101 and directly adjacent to the peripheral free zone 120.

[0071] The width w101 of the circular defocusing structure 101 is the radial distance between the inner projection io101 and the outer projection oo101. The widths w102 and w103 are determined accordingly with the inner projections io102, io103 and the outer projections oo102, oo103.

[0072] The distance p101 of the circular defocusing structure 101 is the radial distance between the inner projection io101 of the circular defocusing structure 101 and the inner projection io102 of the circular defocusing structure 102. The division w102 is determined accordingly with the inner projections io102 and io103.

[0073] The width of the central vision zone cw110 of the single vision spectacle lens 100 is the diameter of the central vision zone 110.

[0074] The single-vision lens 100 according to the first embodiment of the Fig. 1 and Fig.Design 2 features a central, clearly defined zone width cw110, which leads to better wearer acceptance compared to the state of the art. Furthermore, the length-related fill factor If101 and the pitch p101 are designed to achieve improved wearer comfort and acceptance compared to the state of the art.

[0075] A second exemplary embodiment of the present invention is described by reference to Fig. 3 and Fig.Figure 4 describes a coated single-vision spectacle lens 200. The coated single-vision spectacle lens 200 comprises a coated central clear zone 210. In this embodiment, the coated central clear zone 210 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the coated single-vision spectacle lens 200 additionally comprises five coated circular defocusing structures 201 to 205 with the same cross-section. Circular means ring-shaped with a circular contour when viewed from the front.

[0076] The coated circular defocusing structures 201 to 205 are shaped to achieve an additional focal length of 12 diopters compared to the focal length of the coated central clear zone 210. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0077] The in the Fig. 3 and Fig. The coated single-vision lens 200 shown has a diameter of 7 cm. Therefore, the lens 200 must be made of... Fig.The coated single-vision lens 200 is bent to fit a suitable spectacle frame. It comprises five coated circular focusing structures 201 to 205. These coated circular defocusing structures 201 to 205 are arranged concentrically to the optical center of the coated single-vision lens 200. Furthermore, the coated circular defocusing structure 201 surrounds the coated central clear zone 210 with a width cw210 of 7.0 mm. The width w201 of the coated circular defocusing structure 201 is 0.5 mm. The adjacent coated circular structure 202 is arranged concentrically to the inner coated circular structure 201 and surrounds the coated circular central clear zone 210 with a distance p201 of 1.0 mm.The ratio of the width w201 to the distance p201 results in a length-related fill factor of 50.0% and an area-related fill factor of 46.9%.

[0078] Fig. Figure 1 shows a cross-sectional view of the coated single-vision spectacle lens 200. The coated front surface 231 and the back surface 233 of the single-vision spectacle lens 200 are spherical. Within the scope of the present invention, the shape of the coated front surface 231 and the back surface 233 of the coated single-vision spectacle lens 200 is not limited to a spherical shape, but can also be aspherical, toroidal, or even free-form to meet the individual needs of the wearer.

[0079] In Fig.This paper demonstrates how the inner onset io201 and outer onset oo201 of a coated circular defocusing structure 201, the width of a coated circular defocusing structure w201 to w203, the distance between two adjacent circular defocusing structures p201, and the central clear zone width cw210 can be determined. For simplicity, in Fig. Only the three coated circular defocusing structures 201 to 203 are shown, while in Fig. Five coated circular defocusing structures 201 to 205 are shown.

[0080] The determination of an inner onset and an outer onset of a coated circular defocusing structure is explained using the coated circular defocusing structure 201 as an example. The inner onset io201 of the coated circular defocusing structure 201 represents the first measurable inner position (measured from the optical center of the lens) of the coated circular defocusing structure 201 on the lens surface. In other words, the inner position io201 represents the position on the lens surface at which the surface shape of the coated defocusing structure begins to deviate from the shape of the base lens surface. Fig. The first deviation, and thus the inner starting point io201, is at the point where the coating 237 no longer runs parallel to the shape of the front surface 231.

[0081] The outer approach oo201 of the coated circular defocusing structure 201 represents the first measurable outer position (measured from the optical center of the spectacle lens) of the coated ring-shaped defocusing structure 201 on the surface of a spectacle lens. In other words, the outer approach oo201 represents the position on the surface of the spectacle lens at which the surface shape of the coated defocusing structure begins to deviate from the shape of the base lens surface. Fig. This first deviation, and thus also the outer starting point oo201, is located at the point where the coating 237 runs parallel to the shape of the front surface 231.

[0082] The width w201 of the coated circular defocusing structure 201 is the radial distance between the inner projection io201 and the outer projection oo201. The widths w202 and w203 are determined accordingly with the inner projections io202, io203 and the outer projections oo202, oo203.

[0083] The division p201 of the coated circular defocusing structure 201 is the radial distance between the inner projection io201 of the coated circular defocusing structure 201 and the inner projection io202 of the coated circular defocusing structure 202. The division w202 is determined accordingly with the inner projections io202 and io203.

[0084] The width of the central clear zone cw210 of the coated single-vision spectacle lens 200 is the diameter of the coated central clear zone 210.

[0085] The coated single-vision lens 200 according to the first embodiment of the Fig. 3 and Fig. Design 4 features a central clear-view zone width cw210, which leads to improved wearer acceptance compared to the prior art. Furthermore, the length-related fill factor If201 and the pitch p201 are designed to achieve better wearer comfort and acceptance compared to the prior art.

[0086] A third exemplary embodiment of the present invention is described with reference to the Fig. 5 and Fig.Figure 6 describes a single-vision spectacle lens 300. The single-vision spectacle lens 300 comprises a central clear zone 310. In this embodiment, the central clear zone 310 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 300 additionally comprises five circular diffuse structures 301 to 305 with the same cross-section. Circular means ring-shaped with a circular contour when viewed from the front.

[0087] The circular diffuse structures 301 to 305 are designed such that the wearer's visual acuity is reduced by 0.1 to 0.2 logMAR. The circular diffuse structures 301 to 305 thus lead to diffusion and / or scattering of light.

[0088] The in the Fig. The single-vision lens shown, size 300, has a diameter of 7 cm. Therefore, the lens size 300 must be made of... Fig.The lens must be bent to fit a suitable spectacle frame. The single-vision lens 300 comprises five circular diffuse structures 301 to 305. These circular diffuse structures 301 to 305 are arranged concentrically around the optical center of the single-vision lens 300. Furthermore, the circular diffuse structure 301 surrounds the central clear zone 310 with a circular central clear zone width cw310 of 7.0 mm. The width w301 of the circular diffuse structure 301 is 0.5 mm. The adjacent circular structure 302 is arranged concentrically to the inner circular structure 301 and surrounds the circular central clear zone 310 with a distance p301 of 1.0 mm. The ratio of the width w301 to the distance p301 results in a length-related fill factor of 50.0% and an area-related fill factor of 46.9%.

[0089] Fig.Figure 3 shows a cross-sectional view of the single-vision spectacle lens 300. The front surface 331 and the rear surface 333 of the single-vision spectacle lens 300 are spherical. Within the scope of the present invention, the shape of the front surface 331 and the rear surface 333 of the single-vision spectacle lens 300 is not limited to a spherical shape; it can also be aspherical, toroidal, atoric, or even free-form to meet the individual needs of the wearer.

[0090] Fig. This shows how the inner onset io301 and the outer onset oo301 of a circular diffuse structure 301, the width of a circular diffuse structure w301 to w303, the distance between two adjacent circular diffuse structures p301, and the central clear zone width cw310 can be determined. For the sake of simplicity, in Fig. only the three circular diffuse structures 301 to 303 are shown, while in Fig.Five circular diffuse structures 301 to 305 are shown.

[0091] The determination of an inner and an outer onset of a circular diffuse structure is explained using the circular diffuse structure 301 as an example. The inner onset io301 of the circular diffuse structure 301 is a point directly adjacent to the central free zone 310. The outer onset oo301 of the circular diffuse structure 301 is a point located radially to the inner onset io301 and directly adjacent to the peripheral clear zone 320.

[0092] The width w301 of the circular diffuse structure 301 is the radial distance between the inner approach io301 and the outer approach oo301. The widths w302 and w303 are determined accordingly with the inner approaches io302, io303 and the outer approaches oo302, oo303.

[0093] The distance p301 of the circular diffuse structure 301 is the radial distance between the inner extension io301 of the circular diffuse structure 301 and the inner extension io302 of the circular diffuse structure 302. The division w302 is determined accordingly with the inner beginnings io302 and io303.

[0094] The width of the central vision zone cw310 of the single vision spectacle lens 300 is the diameter of the central vision zone 310.

[0095] The single-vision lens 300 according to the third embodiment in the Fig. It features a central, clearly defined zone width cw310, which leads to better wearer acceptance compared to the state of the art. Furthermore, the length-related fill factor If301 and the pitch p301 are designed to achieve improved wearer comfort and acceptance compared to the state of the art.

[0096] A fourth exemplary embodiment of the present invention is described by reference to Fig. Figure 7 describes a single-vision spectacle lens 400. The single-vision spectacle lens 400 comprises a central clear zone 410. In this embodiment, the central clear zone 410 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 400 additionally comprises five circular defocusing structures 401 to 405 with the same cross-section. Circular means ring-shaped with a circular contour when viewed from the front.

[0097] The circular defocusing structures 401 to 405 are shaped to achieve an additional focal length of 8 diopters compared to the focal length of the central clear zone 410. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0098] The in Fig. The single-vision lens 400 shown has a diameter of 7 cm. Therefore, the lens 400 must be made of... Fig.The lens must be bent to fit a suitable spectacle frame. The single-vision lens 400 comprises five circular defocusing structures 401 to 405. These circular defocusing structures 401 to 405 are arranged concentrically around the optical center of the single-vision lens 400. Furthermore, the circular defocusing structure 401 surrounds the central clear zone 410 with a circular clear zone width cw410 of 9.4 mm. The width w401 of the circular defocusing structure 401 is 0.5 mm. The adjacent circular structure 402 is arranged concentrically to the inner circular structure 401 and surrounds the circular clear zone 410 with a distance p401 of 1.2 mm. The ratio of the width w401 and the distance p401 results in a length-related fill factor of 41.7% and an area-related fill factor of 38.9%.

[0099] The single-vision lens 400 according to the fourth embodiment of Fig. exhibits a larger central viewing area width cw410 than the central viewing area width cw110 of the first embodiment of Fig. , which leads to improved acceptance by the wearer. Furthermore, the length-related fill factor If401 and the division p401 are designed such that, compared to the first embodiment of Fig. 1. Improved comfort and acceptance of the wearer is achieved.

[0100] A fifth exemplary embodiment of the present invention is described by reference to Fig.Figure 8 describes a single-vision spectacle lens 500. The single-vision spectacle lens 500 comprises a central clear zone 510. In this embodiment, the central clear zone 510 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 500 additionally comprises five circular defocusing structures 501 to 505 with the same cross-section. Circular means ring-shaped with a circular contour when viewed from the front.

[0101] The circular defocusing structures 501 to 505 are shaped to achieve an additional focal length of 10 diopters compared to the focal length of the central clear zone 510. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0102] The in Fig. The single-vision lens 500 shown has a diameter of 7 cm. Therefore, the lens 500 must be made of... Fig.The lens must be bent to fit a suitable spectacle frame. The single-vision lens 500 comprises five circular defocusing structures 501 to 505. These circular defocusing structures 501 to 505 are arranged concentrically around the optical center of the single-vision lens 500. Furthermore, the circular defocusing structure 501 surrounds the central clear zone 510 with a circular clear zone width cw510 of 9.4 mm. The width w501 of the circular defocusing structure 501 is 0.5 mm. The adjacent circular structure 502 is arranged concentrically to the inner circular structure 501 and surrounds the circular clear zone 510 with a distance p501 of 1.5 mm. The ratio of the width w501 to the distance p501 results in a length-related fill factor of 33.3% and an area-related fill factor of 30.3%.

[0103] The single-vision lens 500 according to the fourth embodiment of Fig. exhibits a greater width of the central vision zone cw510 compared to the width of the central vision zone cw110 of the first embodiment of Fig. This leads to better acceptance by the wearer. Furthermore, the length-related fill factor If501 and the division p501 are designed such that, compared to the first embodiment of Fig. 8. Improved comfort and acceptance of the wearer is achieved.

[0104] A sixth exemplary embodiment of the present invention is described by reference to Fig.Figure 9 describes a single-vision spectacle lens 600. The single-vision spectacle lens 600 comprises a central clear zone 610. In this embodiment, the central clear zone 610 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 600 additionally comprises five circular defocusing structures 601 to 605 with the same cross-section. Circular means ring-shaped with a circular contour when viewed from the front.

[0105] The circular defocusing structures 601 to 605 are shaped to achieve an additional focal length of 12 diopters compared to the focal length of the central clear zone 610. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0106] The in Fig. The single-vision lens 600 shown has a diameter of 7 cm. Therefore, the lens 600 must be made of... Fig.The lens must be bent to fit a suitable spectacle frame. The single-vision lens 600 comprises five circular defocusing structures 601 to 605. These circular defocusing structures 601 to 605 are arranged concentrically to the optical center of the single-vision lens 600. Furthermore, the circular defocusing structure 601 surrounds the central visual zone 610 with a circular central visual zone width cw610 of 6.0 mm. The width w601 of the circular defocusing structure 601 is 0.5 mm. The adjacent circular structure 602 is arranged concentrically to the inner circular structure 601 and surrounds the circular central clear zone 610 with a distance p601 of 1.7 mm. The ratio of the width w601 to the distance p601 results in a length-related fill factor of 29.4% and an area-related fill factor of 25.8%.

[0107] The single-vision lens 600 according to the fourth embodiment of Fig. exhibits a smaller central viewing zone width cw610 than the central viewing zone width cw110 of the first embodiment of Fig. , which results in a smaller area for myopia correction. However, the length-related fill factor If601 and the division p601 are designed such that, compared to the first embodiment of Fig. 1. Improved wearing comfort and better acceptance by the wearer can be achieved.

[0108] Another exemplary embodiment of the present invention is described by reference to Fig. Figure 10 describes a progressive spectacle lens 700. The progressive spectacle lens 700 comprises a distance segment 750, a corridor segment 760, and a near segment 770. Fig. Figure 10 shows circular defocusing structures 701 to 705 in the far section 750 and circular defocusing structures 711 and 712 in the near section 770.

[0109] The distance section 750 consists of four circular defocusing structures 701 to 704. These structures are arranged concentrically around the distance reference point 751. The distance reference point 751 is the point on the front surface of the spectacle lens at which the test power 753 applies to the distance section 750 (DIN ISO 13666:2019, Section 3.2.20). The test power 753 is the diopter strength of the spectacle lens, which is specifically calculated and provided by the manufacturer as the reference for testing (DIN ISO 13666:2019, Section 3.10.15). Furthermore, the circular structure 701 surrounds the central free zone 710, which has a central free zone width cw710 of 7.0 mm. The width w701 of the circular structure 701 is 0.5 mm. The adjacent circular structure 702 is arranged concentrically to the circular structure 701 with a distance p701 of 1.5 mm.The distance p701 is the distance from the inner approach of the circular shape structure 701 to the inner approach of the circular shape structure 702. The ratio between the width w701 and the distance p701 results in a length-related fill factor If701 of 33.3% and an area-related fill factor of 29.4%.

[0110] The near zone 770 comprises two circular defocusing structures 711 and 712. These structures are arranged concentrically around the near reference point 771. The near reference point 771 is the point on the front surface of the spectacle lens at which the test power 753 applies to the near zone 770 (DIN ISO 13666:2019, Section 3.2.21). The test power 753 is the diopter strength of the spectacle lens, which is specifically calculated and provided by the manufacturer as the reference for testing (DIN ISO 13666:2019, Section 3.10.15). Furthermore, the circular structure 701 surrounds the central vision zone 720, which has a central vision zone width cw711 of 6.0 mm. The width w711 of the circular structure 711 corresponds to 0.5 mm. The adjacent circular structure 712 is arranged concentrically to the circular structure 711 at a distance p711 of 1.1 mm. The distance p711 is the distance from the inner end of circular structure 711 to the inner end of circular structure 712.The ratio between the width w711 and the distance p711 results in a length-based fill factor If711 of 45.5% and an area-based fill factor of 41.6%.

[0111] Another exemplary embodiment of the present invention is described by reference to Fig.Figure 11 describes a single-vision spectacle lens 800. The single-vision spectacle lens 800 comprises a central clear zone 810. In this embodiment, the central clear zone 810 has a refractive power designed to correct the wearer's existing myopia. In the present exemplary embodiment, the single-vision spectacle lens 800 additionally comprises five circular defocusing structures 801 to 805. Circular means ring-shaped with a circular contour when viewed from the front. In this embodiment, the circular defocusing structures 801 to 805 comprise individual lenses connected to one another within a circular defocusing structure 801 to 805.

[0112] The circular defocusing structures 801 to 805 are shaped to achieve an additional focal length of 12 diopters compared to the focal length of the central clear zone 810. This additional refractive power is perceived by the wearer as blurring and is described, for example, in Li X, Ding C, Li Y, Lim EW, Gao Y, Fermigier B, Yang A, Chen H, Bao J. Influence of Lenslet Configuration on Short-Term Visual Performance in Myopia Control Spectacle Lenses. Frontiers in Neuroscience 2021. This additional refractive power leads to a reduction in the progression of the wearer's myopia.

[0113] The in Fig. The single-vision lens 800 shown has a diameter of 7 cm. Therefore, the lens 800 must be made of... Fig.The lens must be bent to fit a suitable spectacle frame. The single-vision lens 800 comprises five circular defocusing structures 801 to 805. These circular defocusing structures 801 to 805 are arranged concentrically around the optical center of the single-vision lens 800. Furthermore, the circular defocusing structure 801 surrounds the central visual zone 810 with a circular central visual zone width cw810 of 6.0 mm. The width w801 of the circular defocusing structure 801 is 0.5 mm. The adjacent circular structure 802 is arranged concentrically to the inner circular structure 801 and surrounds the circular central clear zone 810 with a distance p801 of 1.7 mm. From the ratio of the width w801 and the distance p801, a length-related fill factor If801 of 29.4% and an area-related fill factor of 24.8% results.

[0114] Table 1 below shows various design features of the spectacle lens according to the invention, ranked according to wearer satisfaction with comfort. Subjects in a study rated these design features on a scale of 1 to 10, where 10 corresponds to the best possible wearability of a spectacle lens (e.g., a single-vision lens with a length-related fill factor of 0%) and 1 to the worst possible wearability of a spectacle lens (e.g., a single-vision lens with a length-related fill factor of 100%). A wearability rating of 4.0 or higher is considered sufficient, such that children are likely to accept such spectacle lenses with this level of wearability satisfaction and would not tend to reject them.

[0115] The lenses 1 to 9 in Table 1 are therefore further embodiments of the spectacle lens according to the invention and the lenses 10 to 16 are considered reference lenses for the lenses 1 to 9 with regard to satisfaction with wearability. Table 1. Design features of selected spectacle lenses with their specific properties and wearer satisfaction, as well as visual acuity when looking through the edge of the spectacle lens. ID Division width [mm] Cylinder width [ mm] ADD power [ D] Diameter of clear zone [ mm] Length-related fill factor [%] Satisfaction with portability (1-10) Visual acuity @ 20° [logMAR] Lens 1 1 0.5 8 9.4 50 6.1 0.0 Lens 2 1.2 0.6 8 9.4 50 5.7 0.2 Lens 3 1 0.5 10 9.4 50 5.4 0.1 Lens 4 1.2 0.6 10 9.4 50 5.0 0.1 Lens 5 1.2 0.6 12 9.4 50 4.9 0.1 Lens 6 1.2 0.84 8 9.4 70 4.3 0.4 Lens 7 1 0.5 12 9.4 50 4.3 0.1 Lens 8 1 0.7 8 9.4 70 4.3 0.4 Lens 9 1.2 0.6 8 7 50 4.3 0.1 Lens 10 1 0.7 10 9.4 70 3.9 0.3 Lens 11 1.2 0.84 10 9.4 70 3.7 0.3 Lens 12 0.86 0.6 8 7 70 3.6 0.2 Lens 13 1 0.7 12 9.4 70 3.0 0.2 Lens 14 0.86 0.6 12 7 70 2.6 0.4 Lens 15 0.86 0.6 10 7 70 2.4 0.3 Lens 16 1.2 0.84 12 9.4 70 2.3 0.3 QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 3561578 A1 [0004, 0005, 0006, 0007, 0026, 0027] WO 2019166659 A1 [0005, 0006, 0007, 0008, 0027, 0029] WO 2021069443 A1 [0009, 0014] CN 10963925 A

[0010] US 2011051079 A1

[0012] EP 3888894 A1 [0013, 0018] CN 111103701 B

[0027] US 2019 / 0227342 A1

[0027] CN 213659117 U

[0028] WO 2010 / 075319 A2

[0032] WO 2018 / 026697 A1

[0032] WO 2019 / 152438 A1

[0032] WO 2020 / 014613 A1

[0032] Zitierte Nicht-Patentliteratur

[0000] Sankaridurg, P., Donovan, L., Varnas, S., Ho, A., Chen, X., Martinez, A., Fisher, S., Lin, Z., Smith, E.L., 3rd, Ge, J., & Holden, B. Spectacle lenses designed to reduce progression of myopia: 12-month results. Optom Vis Sci, 87 (9), 631-641

[0001] Bao J, Yang A, Huang Y, Li X, Pan Y, Ding C, Lim EW, Zheng J, Spiegel DP, Drobe B, Lu F, Chen H. One-year myopia control efficacy of spectacle lenses with aspherical lenseslets. Br J Ophthalmol. 2021:318367

[0001] DIN ISO 13666:2019 [0036, 0109, 0110]

Claims

[1] Spectacle lens (100, 300 to 800) with one or more annular defocusing structures (101, 102, 103, ...), each of which has a corresponding width (w101, w102, w103, ...), and a surface-based fill factor (sf101) which is defined as an area ratio of the area of ​​an innermost of the one or more annular defocusing structures (101, 102, 103, ...) and a sum of the surface area of ​​the innermost of the one or more annular defocusing structures (101, 102, 103, ...) and the area of ​​a peripheral free zone (110, 310, ...), wherein the surface-based fill factor (sf101) is greater than 17% and equal to or less than 70% for the width (w101, w102, w103, ...) of the one or more ring-shaped structure(s) (101, 102, 103, ...) in a range of 0.6 mm to 0.7 mm. [2] Spectacle lens (100, 300 to 800) according to claim 1, characterized bythat the width of the central clear zone (cw110, cw310, ...) is greater than 6 mm and less than or equal to 7 mm. [3] Spectacle lens (100, 300 to 800) according to one of the preceding claims, characterized by that the one or more annular defocusing structures (101, 102, 103, ...) provide an additional refractive power (ADD) compared to the central clear zone (110, 310, ...) within at least one area of ​​the following group of areas: (i) the additional power (ADD) is greater than 6 diopters and equal to or less than 12 diopters; (ii) the additional power (ADD) is greater than 7 diopters and equal to or less than 11 diopters; (iii) the additional power (ADD) is greater than 8 diopters and equal to or less than 10 diopters. [4] Spectacle lens (200) with one or more annular diffuse structures (201, 202, 203, ...), each having a width (w201, w202, w203, ...), and at least one additional feature from the following group of features: (i) a surface-based fill factor (sf201) defined as a surface ratio of the surface of an innermost of the one or more annular diffuse structures (201, 202, 203, ...) and a sum of the surface of the innermost one or more annular diffuse structures (201, 202, 203, ...) and the area of ​​a peripheral free zone (210), wherein the area-based fill factor (sf201) is greater than 17% and equal to or less than 70% for the width (w201, w202, w203, ...) of the one or more annular diffuse structure(s) (201, 202, 203, ...) in a range of 0.6 mm to 0.7 mm; (ii) a surface-based fill factor (sf201) defined as a surface ratio of the surface of an innermost of the one or more annular diffuse structures (201, 202, 203, ...) and a sum of the surface of the innermost one or more annular diffuse structures (201, 202, 203, ...) and the area of ​​a peripheral free zone (210), wherein the area-based fill factor (sf201) is greater than 15% and equal to or less than 60% for the width (w201, w202, w203, ...) of the one or more annular diffuse structures (201, 202, 203, ...) in a range of 0.5 mm to 0.6 mm. [5] Spectacle lens (200) according to claim 4, characterized by that the width of the central clear zone (cw210) lies within at least one of the following group of ranges: (i) the width of the central free zone (cw210) is greater than 6 mm and less than or equal to 7 mm; (ii) the width of the central free zone (cw210) is greater than 7 mm and less than or equal to 9.4 mm. [6] Spectacle lens (100 to 800) according to one of claims 1 to 5 in the form of computer-readable instructions for its manufacture stored on a computer-readable data carrier. [7] Spectacle lens (100 to 800) according to one of claims 1 to 5 in the form of computer-readable data stored on a computer-readable data carrier. [8] Spectacle lens (100 to 800) according to one of claims 1 to 5 in the form of computer-readable instructions for its manufacture converted into a data carrier signal. [9] Spectacle lens (100 to 800) according to one of claims 1 to 5 in the form of a data carrier signal. [10] Numerical data set describing a spectacle lens (100 to 800) according to one of claims 1 to 5. [11] A data signal carrying the numerical data set according to claim 10. [12] A data carrier for storing the numerical data set according to claim 10.

Images