Spectacle lens comprising ring structure and method

Abstract

The invention relates to an eyeglass lens comprising a plurality of ring structures, each ring structure having a uniform width, one or more ring structures of said plurality of ring structures each having a varying power, characterized in that the variation in surface average power comprises one or more random components, the variation is along an annular path within the one annular structure or along an annular path within the same annular structure of each of the more annular structures.

Description

Technical Field

[0001] The present invention relates to an eyeglass lens comprising a plurality of ring structures as described in the preamble of claim 1, and to a method for calculating a digital twin of an eyeglass lens as described in the preamble of claim 11. Background Technology

[0002] PCT / CN2023 / 076348 discloses an eyeglass lens comprising a central region and one or more annular structures, each having a uniform width. Instead of or attached to said one or more annular structures, the eyeglass lens includes one or more annular structures, each having a variable surface power. Therefore, the one or more annular structures have varying power.

[0003] WO 2023 / 275189 A1 is combined in paragraph

[00141] . Figure 3 It is disclosed that the optical power of the optical element 14 in the left quadrant Q3 and / or the lower quadrant Q4 can be higher than that of the optical element in the right quadrant Q1 and / or the upper quadrant Q2. The average optical power of the optical element in the left quadrant Q3 and / or the lower quadrant Q4 can be higher than that of the optical element in the right quadrant Q1 and / or the upper quadrant Q2. WO 2023 / 275189 A1 discloses in paragraph

[00145] that the optical element 14 can be configured such that along at least one segment of the lens element, the average spherical power of the optical element varies (increases or decreases) from a point in said segment toward the periphery of said segment. Figure 3 The three optical elements in the optical system have varying focal lengths.

[0004] WO 2021 / 260642 A1 discloses, in paragraph

[00155] in conjunction with FIG4B, optical elements 422, 424, 426 of a single geometrically defined shape and / or contour in regions 404, 406, 408 of an ophthalmic lens surface 402. Sagittal power plot 400B shows the power distribution varying along each individual element. Tangential power plot 400C shows that the power of each optical element (e.g., element 426) is different at its innermost edge 417 and outermost edge 418. Paragraph

[00155] further discloses that one or more regions of an ophthalmic lens may include multiple optical elements of geometrically defined shapes and / or contours, which may be randomly distributed within one region and relative to another. Paragraph

[00163] in conjunction with FIG8 discloses, for example, an ophthalmic lens surface including multiple optical elements of geometrically defined shapes and / or contours in multiple annular regions. As shown in 800A, the dimensions of the optical elements with geometrically defined shapes and / or contours within each region (e.g., elements 808a and 808c in region 808) and the dimensions of the optical elements with geometrically defined shapes and / or contours across regions (e.g., elements 804a to 809a in regions 804 to 809) can have similar shapes, lengths (811), and widths (812). Paragraph

[00231] , in conjunction with Figure 29K, discloses a spectacle lens having a specific contour and multiple annular peripheral processing priority regions 2966 formed by a plurality of optical elements with geometrically defined shapes and / or contours having a relatively higher positive focal length than a +2.5D visual priority region.

[0005] WO 2023 / 007159 A1 discloses a lens in paragraph

[0080] in conjunction with FIG9, the lens having a layer 1100 comprising a plurality of concentric annular regions 1106a to 1106d, each annular region 1106a to 1106d comprising a plurality of GRIN optical elements 1102a to 1102d. The GRIN optical elements (one of 1102a to 1102d) are distributed around each annular region 1106a to 1106d such that the positioning of the GRIN optical element 1102b surrounding one of the annular regions 1106b is out of phase with the positioning of the GRIN optical elements (1102a and 1102c) in the adjacent annular regions 1106a / 1106c.

[0006] The problem to be solved Unlike PCT / CN2023 / 076348, which describes spectacle lenses comprising one or more annular structures each having a variable surface power, the problem to be solved by the present invention is to provide a spectacle lens designed to minimize the adaptation or habituation effect of the spectacle lens wearer. Summary of the Invention

[0007] This problem has been solved by the spectacle lens according to claim 1 and the method according to claim 11.

[0008] The spectacle lens comprises multiple annular structures, each of which has a uniform width. Each annular structure has a path within the same structure, starting from a point within that same structure, circling an unstructured region of that same structure, and ending again at that point. One or more of the annular structures have varying power; that is, one or more of the annular structures have varying power. The spectacle lens is characterized in that the variation in the average power of the surface includes one or more random components, the variation occurring along an annular path within the one annular structure or along an annular path within the same annular structure of each of the more annular structures. The random components are: i) The structural features of the ring structure, and even if the variation of the structural features along a portion of the circumference of the ring structure is known, there is no rule to predict the variation of the structural features along the circumference of the ring structure, or ii) The structural features of each of the plurality of ring structures, and even if the variation of the structural features along a portion of the circumference of the same ring structure among the plurality of ring structures is known, there is no rule to predict the variation of the structural features along the circumference of the same ring structure among the plurality of ring structures, or iii) The structural features of the more ring structures, and even if the variation of the structural features along the circumference of the first ring structure in the more ring structures is known, there is no rule to predict the variation of the structural features along the circumference of the second ring structure in the more ring structures.

[0009] As defined in Clause 3.5.2 of ISO 13666:2019(E), "spectacle lens" means an ophthalmic lens worn in front of the eye but not in contact with the eyeball (3.5.1). Spectacle lenses are preferably finished spectacle lenses, as defined in Clause 3.8.7 of ISO 13666:2019(E), which means a spectacle lens having a final optical surface on both sides (3.5.2). As noted in Note 1 to Clause 3.8.7 of ISO 13666:2019(E), finished spectacle lenses can be edged (cut) or uncut. Spectacle lenses are preferably selected from one of the following groups: - Single-vision spectacle lenses as defined in clause 3.7.1 of ISO 13666:2019(E). - Single-vision spectacle lenses in specific locations as defined in Clause 3.7.2 of ISO 13666:2019(E). - Spectacular lenses with power variation as defined in clause 3.7.7 of ISO 13666:2019(E). - Gradient power spectacle lenses as defined in clause 3.7.8 of ISO 13666:2019(E).

[0010] When considered separately from each of the other ring structures, "one ring structure" is a ring-shaped region of the spectacle lens whose surface power differs from the surface power of the surface of the spectacle lens that includes the one ring structure but lies outside the ring-shaped region occupied by the one ring structure. In other words, when considered separately from each of the other ring structures, one ring structure is a ring-shaped region of the spectacle lens surface whose surface power differs from the surface power of the surface of the spectacle lens that includes the one ring structure but lies outside the ring-shaped region occupied by the one ring structure. The surface power of the spectacle lens surface is the surface power located outside both the ring-shaped region occupied by the one ring structure and any ring-shaped region occupied by any of the other ring structures in the plurality of ring structures. Similar to clause 3.10.4 of ISO 13666:2019(E), the surface power of a toroidal structure is defined as the local ability of the surface of the toroidal structure to alter the convergence or divergence of a beam of light incident on the surface at any location on the surface. As noted in note 1 to clause 3.10.4 of ISO 13666:2019(E), the surface power of a toroidal structure is determined by one or more radii of the surface of the toroidal structure and the refractive index (3.1.5) of the material of the toroidal structure, and is calculated for light incident or emitted in air (3.1.2). Preferably, it is assumed that the refractive index of the material of the toroidal structure is the same as the refractive index of the optical material of the spectacle lens, as defined in clause 3.3.1 of ISO 13666:2019(E). For definitions of the surface power of spectacle lens surfaces, the structure of spectacle lenses, and the surface of spectacle lenses, refer to the definitions given below. The one ring structure has a path within it that begins at a point within the ring structure, circles the unstructured domain of the ring structure, and ends again at that point. As described below, similar to each of the plurality of ring structures, the one ring structure is defined by two starting lines: an outer starting line and an inner starting line. The outer starting line passes through each outer starting point of the ring structure, and the inner starting line passes through each inner starting point of the ring structure. The outer starting point represents a first external position along the outer circumference or outer perimeter of the ring structure, where the surface of the ring structure deviates from the surface of the spectacle lens that includes the ring structure. The inner starting point represents a first internal position along the inner circumference or inner perimeter, where the surface of the ring structure deviates from the surface of the spectacle lens that includes the ring structure.In other words, when considered separately from each of the plurality of annular structures, the one annular structure surrounds or encircles the unstructured domain of the surface of the spectacle lens comprising the one annular structure, and the one annular structure is surrounded or encircled by the unstructured domain of the surface. Preferably, when considered separately from each of the plurality of annular structures, the one annular structure surrounds or encircles the unstructured domain of the spectacle lens, and simultaneously, the one annular structure is surrounded or encircled by the unstructured domain of the spectacle lens. Preferably, the surface of the one annular structure deviates from the surface of the spectacle lens comprising the one annular structure in such that the deviation in surface power increases along any path from a common point defined below toward the periphery of the spectacle lens, wherein the increase in surface power is discontinuous or the increase in surface power is greater than 3 diopters over a distance less than 0.75 mm. The first location of the deviation along the path is the first internal location. Preferably, the surface of the annular structure deviates from the surface of the spectacle lens including the annular structure in such that the deviation in surface power decreases along any path from a common point defined below toward the periphery of the spectacle lens, wherein the decrease in surface power is discontinuous or the decrease in surface power is greater than 3 diopters over a distance less than 0.75 mm. The first location of the deviation along the path is the first external location.

[0011] When the one ring structure is considered separately from each of the other ring structures in the plurality of ring structures, the unstructured region of the one ring structure is a region on the surface of the spectacle lens that is outside the ring region of the one ring structure and outside the corresponding region of any of the other ring structures in the plurality of ring structures, the unstructured region of the one ring structure being surrounded or encircled by the one ring structure. Preferably, the unstructured region of the one ring structure is located near the one ring structure, preferably separated from the ring region of the one ring structure by an inner starting line of the one ring structure. When the one ring structure is considered separately from each of the other ring structures in the plurality of ring structures, the unstructured region of the one ring structure is preferably a region on the spectacle lens that includes the unstructured region of the one ring structure at each x, y position, wherein each x, y position is unstructured on both surfaces of the spectacle lens.

[0012] The unstructured domain of a spectacle lens is the following domain on the surface of the spectacle lens: i) the domain is located outside the domain of one of the plurality of annular structures, and ii) the domain is located outside the corresponding domain of any of the plurality of annular structures, the unstructured domain of the spectacle lens including each x, y position that is unstructured on both surfaces of the spectacle lens.

[0013] The x, y and x, y, z positions are preferably defined in an x, y, z coordinate system, which is preferably defined as follows: a predefined point of the spectacle lens defines the origin of the x, y, z coordinate system, and i) the surface normal or ii) the principal direction at the predefined point defines the z direction. The "x, y directions" lie in a plane perpendicular to the surface normal or the principal direction. In the plane perpendicular to the surface normal or the principal direction, the x and y directions are perpendicular to each other. The predefined point is preferably selected from the group consisting of: the optical center of the spectacle lens and the fitting point of the spectacle lens, the optical center as defined in Clause 3.2.15 of ISO 13666:2019(E), and the fitting point as defined in Clause 3.2.34 of ISO 13666:2019(E). As defined in ISO 13666:2019(E) Clause 3.2.25, the principal direction of an eyeglass lens is the direction of the line of sight (3.2.24) of looking at an object at infinity when looking straight ahead with the naked eye in a habitual head and body posture (usually considered to be horizontal).

[0014] "Multiple ring structures" includes more than one ring structure.

[0015] One of the plurality of ring structures is a single ring structure that is considered separately from each of the other ring structures.

[0016] The plurality of ring structures may include each of the plurality of ring structures. In other words, the plurality of ring structures may include: i) more than one of the plurality of ring structures, or ii) each of the plurality of ring structures.

[0017] If necessary, the same ring structure among the plurality of ring structures needs to be reconstructed between portions of the same ring structure still included in the edged spectacle lens as defined in Clause 3.8.9 of ISO 13666:2019(E).

[0018] “Structure” is a domain of an eyeglass lens whose surface power differs from the surface power of a surface of the eyeglass lens that includes the structure, lies outside the domain occupied by the structure, and lies outside any domain occupied by any structure. Similar to Clause 3.10.4 of ISO 13666:2019(E), the surface power of a structure is defined as the local ability of the surface of the structure at any location on the surface to alter the convergence or divergence of a beam of light incident on the surface. As noted in Note 1 to Clause 3.10.4 of ISO 13666:2019(E), the surface power of a structure is determined by one or more radii of the surface of the structure and the refractive index of the material of the structure (3.1.5), and is calculated for light incident or emitted in air (3.1.2).

[0019] Similar to Clause 3.10.4 of ISO 13666:2019(E), the surface power of an eyeglass lens is defined as the local ability of the surface of the eyeglass lens to change the convergence or divergence of a beam of light at any location on the surface, that is, defined as the local ability of the front surface of the eyeglass lens to change the convergence or divergence of a beam of light at any location on the front surface, or defined as the local ability of the rear surface of the eyeglass lens to change the convergence or divergence of a beam of light at any location on the rear surface. Similar to Note 1 of Clause 3.10.4 of ISO 13666:2019(E), the surface power of the corresponding surface of the spectacle lens is (i) determined by one or more radii of the front surface of the spectacle lens and the refractive index (3.1.5) of the optical material (3.3.1) of the spectacle lens, and is calculated for light incident or emitted in air (3.1.2), or (ii) calculated by one or more radii of the rear surface of the spectacle lens and the refractive index (3.1.5) of the optical material (3.3.1) of the spectacle lens, and is calculated for light incident or emitted in air (3.1.2).

[0020] The surface of the spectacle lens is preferably the front surface as defined in Clause 3.2.13 of ISO 13666:2019(E), or the rear surface as defined in Clause 3.2.14 of ISO 13666:2019(E). At least one of the front and rear surfaces of the spectacle lens may be formed as one of the following surfaces: - Spherical surfaces as defined in Clause 3.4.1 of ISO 13666:2019(E), - Cylindrical surfaces as defined in Clause 3.4.2 of ISO 13666:2019(E), - Aspherical surfaces as defined in Clause 3.4.3 of ISO 13666:2019(E), - Complex surfaces as defined in clause 3.4.6 of ISO 13666:2019(E), - Non-complex surfaces as defined in Clause 3.4.7 of ISO 13666:2019(E), - A surface with varying focal length as defined in Clause 3.4.10 of ISO 13666:2019(E).

[0021] If, when considered separately from each of the other structures in a plurality of structures, the same structure has a path within that same structure that begins at a point within the same structure, circles around the unstructured domain of the same structure, and ends again at that point, then each of the plurality of structures is “ring-shaped.” In other words, when considered separately from each of the other ring-shaped structures in a plurality of ring-shaped structures, each of the other ring-shaped structures is a ring-shaped domain of an eyeglass lens whose surface power differs from the surface power of a surface of the eyeglass lens that includes the same ring-shaped structure, is located outside the ring-shaped domain of the same ring-shaped structure, and is located outside the corresponding ring-shaped domain of any other ring-shaped structure in the plurality of ring-shaped structures. Thus, the same ring-shaped structure has a path within the same ring-shaped structure that begins at a point within the same ring-shaped structure, circles around the unstructured domain of the same ring-shaped structure, and ends again at that point. When considering the same ring structure separately from each of the other ring structures, each of the other ring structures can be a circular, elliptical, irregularly ovate, annular element, or any other ring that surrounds or encircles the unstructured domain of the same ring structure and is surrounded or encircled by the unstructured domain of the spectacle lens. When considering the same ring structure separately from each of the other ring structures, each of the other ring structures can have the same annular shape, such as a circle. Alternatively, again when considering the same ring structure separately from each of the other ring structures, at least one of the other ring structures can have an annular shape (e.g., elliptical) that is different from the other ring structures (e.g., circular). Alternatively, again when considering the same ring structure separately from each of the other ring structures, each of the other ring structures can have a different annular shape.

[0022] When the same annular structure is considered separately from each of the plurality of annular structures, each of the plurality of annular structures is defined by two starting lines: an outer starting line and an inner starting line. The outer starting line passes through each outer starting point of the same annular structure, and the inner starting line passes through each inner starting point of the same annular structure. An outer starting point represents a first external location along the outer circumference or outer periphery of the same annular structure, where the surface of the same annular structure deviates from the surface of the spectacle lens that includes the same annular structure. An inner starting point represents a first internal location along the inner circumference or inner periphery, where the surface of the same annular structure deviates from the surface of the spectacle lens that includes the same annular structure. In other words, again when the same annular structure is considered separately from each of the plurality of annular structures, the same annular structure surrounds or encircles the unstructured region of the surface of the spectacle lens that includes the same annular structure, and the same annular structure is surrounded or encircled by the unstructured region of the surface. Preferably, when the same annular structure is considered separately from each of the plurality of annular structures, the same annular structure surrounds or encircles the unstructured domain of the spectacle lens, and the same annular structure is surrounded or encircled by the unstructured domain of the spectacle lens. Preferably, the surface of the same annular structure deviates from the surface of the spectacle lens including the same annular structure in that the deviation in surface power increases along any path from a common point defined below toward the periphery of the spectacle lens, wherein the increase in surface power is discontinuous or the increase in surface power is greater than 3 diopters over a distance less than 0.75 mm. The first position of the deviation along the path is the first internal position. Preferably, the surface of the same annular structure deviates from the surface of the spectacle lens including the same annular structure in that the deviation in surface power decreases along any path from a common point defined below toward the periphery of the spectacle lens, wherein the decrease in surface power is discontinuous or the decrease in surface power is greater than 3 diopters over a distance less than 0.75 mm. The first position of the deviation along the path is the first external position.

[0023] A “unstructured region of the same annular structure” is a region on the spectacle lens or its surface that is outside the corresponding region occupied by each of the plurality of annular structures, which is surrounded or enclosed by the same annular structure. The unstructured region of the same annular structure is defined as the unstructured region of the same annular structure of the spectacle lens when each x and y position of the unstructured region surrounded or enclosed by the same annular structure is unstructured on both surfaces of the spectacle lens.

[0024] A “structure-free region of an eyeglass lens” is a region on the eyeglass lens or its surface that is outside the corresponding region occupied by each of the plurality of annular structures. Each x, y position of the structure-free region of the eyeglass lens is structure-free on both surfaces of the lens.

[0025] Each of the plurality of annular structures preferably surrounds or encircles a common point of the spectacle lens, said common point being the optical center or fitting point or any other predetermined point of the spectacle lens, the optical center as defined in Clause 3.2.15 of ISO 13666:2019(E), and the fitting point as defined in Clause 3.2.34 of ISO 13666:2019(E). As with Note 1 to Clause 3.2.30 of ISO 13666:2019(E), the optical center (3.2.15) generally applies to single-vision spectacle lenses (3.7.1), and the fitting point (3.2.34) generally applies to single-vision spectacle lenses (3.7.2) or power-changing spectacle lenses at a specific location (3.7.7). Furthermore, according to Clause 7.1 of ISO 8980-1:2017(E), a single-vision spectacle lens at a specific location shall have permanent alignment reference marks comprising two marks nominally spaced 34 mm apart and equidistant from a vertical plane passing through the fitting point. When the same annular structure surrounds or encircles the common point, each of the plurality of annular structures includes the common point of the spectacle lens.

[0026] The unstructured domain of the innermost ring structure among the plurality of ring structures includes the common point. Preferably, the innermost ring structure has a maximum distance selected from the following between its inner starting points: a maximum distance of 15 mm, a maximum distance of 12 mm, a maximum distance of 9 mm, a maximum distance of 8 mm, a maximum distance of 7 mm, a maximum distance of 6 mm, and a maximum distance of 5 mm. Preferably, the unstructured domain of the innermost ring structure among the plurality of ring structures is a connecting region or a simple connecting region. This connecting region is a domain of the spectacle lens, and the domain cannot be divided into two or more independent non-connecting regions. Preferably, the connecting region is a domain on the surface of the spectacle lens, and the domain cannot be divided into two or more independent non-connecting regions. This simple connecting region is a domain of the spectacle lens, the domain is path-connected, and each path between two points in the domain can continuously transform into any other path while keeping the two points unchanged. Preferably, the simple connecting region is a domain on the surface of the spectacle lens, the domain on the surface is path-connected, and each path between two points in the domain can continuously transform into any other path while keeping the two points unchanged.

[0027] The surface power of each of the plurality of annular structures differs from the surface power of the corresponding surface of the spectacle lens, which includes the plurality of annular structures but lies outside the respective domain occupied by each of the plurality of annular structures. Similar to Clause 3.10.4 of ISO 13666:2019(E), the surface power of a corresponding annular structure is defined as the local ability of the surface of the corresponding annular structure at any location on the surface to alter the convergence or divergence of a beam of light incident on the surface. As noted in Note 1 to Clause 3.10.4 of ISO 13666:2019(E), the surface power of a corresponding annular structure is determined by one or more radii of the surface of the corresponding annular structure and the refractive index (3.1.5) of the material of the corresponding annular structure, and is calculated for light incident or emitted in air (3.1.2). Preferably, it is assumed that the refractive index of the material of each ring structure is the same as that of the optical material of the spectacle lens, as defined in Clause 3.3.1 of ISO 13666:2019(E).

[0028] The surface of each of the plurality of annular structures may be selected from one of the following surfaces, or may be composed of one or more portions selected from the following parts joined together: - One or more portions of a spherical surface, as defined in Clause 3.4.1 of ISO 13666:2019(E). - Cylindrical surfaces as defined in clause 3.4.2 of ISO 13666:2019(E) - One or more portions of the cylindrical surface - One or more portions of an aspherical surface, as defined in Clause 3.4.3 of ISO 13666:2019(E). - One or more portions of a complex surface, which is as defined in Clause 3.4.6 of ISO 13666:2019(E). - One or more portions of a non-complex surface, as defined in Clause 3.4.7 of ISO 13666:2019(E). - Surfaces exhibiting changes in focal length as defined in Clause 3.4.10 of ISO 13666:2019(E). - One or more portions of a surface with varying focal length.

[0029] Preferably, the surface of a corresponding annular structure in the plurality of annular structures is: (i) cylindrical, or (ii) having an uninterrupted surface focal length variation over a portion or all of its area; or, spliced ​​together by at least one of the following: (iii) one or more portions of a cylindrical surface, and (iv) one or more portions of a focal length variation surface.

[0030] Each surface of the plurality of annular structures may have the same surface; preferably, the corresponding identical surfaces are selected from a portion of the aforementioned surfaces or are formed by joining portions of the aforementioned surfaces together. Alternatively, one surface of the plurality of annular structures may differ from another surface or other surfaces of the plurality of annular structures, or more surfaces of the plurality of annular structures may differ from other surfaces of the plurality of annular structures; preferably, the corresponding surfaces are selected from a portion of the aforementioned surfaces or are formed by joining portions of the aforementioned surfaces together. Alternatively, each surface of the plurality of annular structures may be different; preferably, the corresponding surfaces are selected from a portion of the aforementioned surfaces or are formed by joining portions of the aforementioned surfaces together.

[0031] Each of the plurality of annular structures can be raised or lowered relative to the surface of the spectacle lens, which includes the plurality of annular structures and is located outside the respective domain occupied by each of the plurality of annular structures. Preferably, it can be raised. Alternatively, one or more of the plurality of annular structures can be raised relative to the surface of the spectacle lens, which includes the plurality of annular structures and is located outside the respective domain occupied by each of the plurality of annular structures. Alternatively, one of the plurality of annular structures or the same annular structure can be raised and lowered relative to the surface of the spectacle lens, which includes the plurality of annular structures and is located outside the respective domain occupied by each of the plurality of annular structures. In this alternative embodiment, another annular structure or other annular structure can be raised or lowered relative to the surface of the spectacle lens, which includes the other annular structure and is located outside the respective domain occupied by the other (other) annular structure. Preferably, relative to the surface of the spectacle lens comprising the plurality of annular structures, located outside the corresponding domain occupied by each of the plurality of annular structures, or relative to the surface of the spectacle lens comprising one or more of the plurality of annular structures, located outside the corresponding domain occupied by the respective annular structure, the same annular structure is raised or lowered when considered separately from each other of the plurality of annular structures, preferably raised.

[0032] "Uniform width" refers to a constant distance between the starting points of the same ring structure within the plurality of ring structures, along any direction perpendicular to the circumferential direction of the same ring structure, where the same ring structure is considered separately from each of the other ring structures in the plurality of ring structures. The circumferential direction of the corresponding same ring structure in the plurality of ring structures is defined by the center path between the inner and outer starting lines of the corresponding same ring structure. The starting points include each inner starting point and each outer starting point of the corresponding same ring structure in the plurality of ring structures.

[0033] Each identical ring structure in the plurality of ring structures has a constant distance between its starting points in any direction perpendicular to any circumferential direction of each of the same ring structures, and each of the same ring structures is considered separately from each of the other ring structures in the plurality of ring structures. One or more of the ring structures in the plurality of ring structures have the uniform width, which is constant for the one ring structure, or the uniform width is constant for each of the more ring structures but different from the other ring structures in the plurality of ring structures. In other words, each of the plurality of ring structures has a uniform width, but the uniform widths of different ring structures may be the same or different.

[0034] Similar to Clause 3.13.12 of ISO 13666:2019(E), “surface average focal power” is defined as the focal power of the surface of one of the plurality of annular structures at the midpoint between two surface focal power values ​​on two principal meridians (3.10.2), or as the focal power of each surface of more than one of the plurality of annular structures at the midpoint between two surface focal power values ​​on two principal meridians (3.10.2). The two surface focal power values ​​on the two principal meridians are as defined in Clause 3.10.4 of ISO 13666:2019(E). Similar to Clause 3.4.5 of ISO 13666:2019(E), the two principal meridians at any location on the surface / each surface are defined as the meridians having the maximum and minimum curvature at the same location.

[0035] A "loop path within a loop structure" is a path within the same loop structure that begins at a point within the same loop structure, circles the unstructured domain of the same loop structure, and ends again at that point, wherein the loop structure is considered separately from each of the other loop structures in the plurality of loop structures. Preferably, the loop path is along the circumferential direction of the loop structure. The circumferential direction of the loop structure is defined by the central path between the inner and outer starting lines of the loop structure.

[0036] "A loop path within the same loop structure of each of the plurality of loop structures" is a path within the same loop structure that begins at a point within the same loop structure, circles the unstructured domain of the same loop structure, and ends again at that point, wherein the same loop structure is considered separately from each of the other structures in the plurality of loop structures. Preferably, the loop path within the same loop structure of each of the plurality of loop structures is along the circumferential direction of the same loop structure. The circumferential direction of the same loop structure in the plurality of loop structures is defined by the central path between the inner and outer starting lines of the same loop structure.

[0037] "Changes in average focal length on the surface" - A ring structure is defined as the non-uniform surface average focal length of the ring structure along a ring path within the same ring structure, and the ring structure is considered separately from each of the other ring structures in the plurality of ring structures. - The more ring structures are defined as the non-uniform surface average focal length of the same ring structure along the ring path within the same ring structure, with each of the more ring structures being considered separately from each of the other structures in the more ring structures.

[0038] A “random component” is defined as a nondeterministic structural feature of a ring structure or a nondeterministic structural feature of each of the multiple ring structures, i.e., the structural feature is nondeterministic.

[0039] A "structural feature" of one or more ring structures is a feature of the respective ring structure that distinguishes the respective ring structure from a surface that includes the respective ring structure and lies outside the domain occupied by the respective ring structure. Alternatively or additionally, the structural feature of the respective ring structure is a geometric feature. The structural feature is preferably selected from at least one of the following: dimensions, such as length along a circumference or a portion of a circumference (i.e., the length along the circumference or the portion of the circumference that can be distinguished from the other parts of the respective ring structure by any geometric feature), width defined by a starting line, height along a circumference or a portion of a circumference; surface focal length along a circumference or a portion of a circumference; and average surface focal length along a circumference or a portion of a circumference.

[0040] If, even if the variation of a structural feature of a ring structure along a portion of the circumference of the ring structure is known, there is no rule to predict the variation of the structural feature along the circumference of the ring structure, then the structural feature is "nondeterministic".

[0041] If, even if the variation of the structural feature of each of the more ring structures along a portion of the circumference of the same ring structure is known, there is no rule to predict the variation of the structural feature along the circumference of each of the more ring structures, then the structural feature is "nondeterministic". In other words, if, even if the variation of the structural feature of each of the more ring structures along a portion of the circumference of the same ring structure is known, there is no rule to predict the variation of the structural feature along the circumference of the same ring structure, then the structural feature is nondeterministic.

[0042] If, even if the structural features of more ring structures are known to vary along the circumference of the first ring structure among the more ring structures, there is no rule to predict the variation of the structural features along the circumference of the second ring structure among the more ring structures, then the structural feature is "nondeterministic".

[0043] This problem has been completely solved by the spectacle lens described above. Due to the random components of one or more ring structures, the light guided through the spectacle lens, including portions of that one or more ring structures, simultaneously provides focused and defocused light at the retina, resulting in a non-uniform defocus signal. Since the eye can move independently of the spectacle lens to change its viewing direction, the amounts of focused and defocused light at the retinal plane change as the eye scans the portions of the spectacle lens including one or more ring structures, providing a dynamic and non-uniform blurred signal at the retina. Due to the random components of that one or more ring structures, the light guided through the spectacle lens, including portions of that one or more ring structures, simultaneously provides focused and defocused light at the retina, resulting in a non-uniform defocus signal, independent of the wearer's gaze direction. Due to the random components of the one or more ring structures, the light guided through the spectacle lens, including portions of the one or more ring structures, simultaneously provides focused and defocused light within a substantial portion of the eye's field of vision. This simultaneous provision of focused and defocused light, supported by the random components of the one or more ring structures, allows the eye to view at distances from infinity to near. The simultaneous provision of focused and defocused light (which, as previously described, varies to provide a dynamic and non-uniform blur signal at the retina) is believed to minimize the adaptation or habituation effect on the spectacle lens wearer.

[0044] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, and one or more of the annular structures having varying power. The spectacle lens is characterized in that... - The plurality of ring structures are concentric ring structures, and each of the concentric ring structures preferably includes the optical center or fitting point of the spectacle lens or any other predetermined point on the spectacle lens, or - The plurality of ring structures are concentric ring structures, each of which preferably includes the optical center or fitting point of the spectacle lens or any other predetermined point on the spectacle lens, or - Each of the plurality of annular structures includes the optical center or fitting point of the spectacle lens or any other predetermined point on the spectacle lens, or - Each of the plurality of annular structures includes the optical center or fitting point of the spectacle lens or any other predetermined point on the spectacle lens.

[0045] The plurality of ring structures are preferably concentric ring structures that include the optical center or fitting point of the spectacle lens. This preferably means that the plurality of ring structures may, in addition to the plurality of concentric ring structures, include one or more ring structures that are not centered at the same center as the plurality of concentric ring structures. These ring structures that are not centered at the same center as the plurality of concentric ring structures can be concentric or non-concentric, and preferably, these ring structures include the optical center or fitting point of the spectacle lens. Any ring structure “including” the optical center or fitting point or any other predetermined point on the spectacle lens means that any ring structure surrounds or encircles the optical center or fitting point or any other predetermined point on the spectacle lens.

[0046] Each of the plurality of annular structures includes the optical center or fitting point of the spectacle lens. This preferably means that each of the plurality of annular structures is spaced apart from each adjacent annular structure to provide an unstructured domain of the spectacle lens adjacent to and along the inner and outer starting lines of the same annular structure. "Spaced apart from adjacent annular structures" to provide an unstructured domain of the spectacle lens adjacent to and along the inner and outer starting lines of the same annular structure preferably means that, adjacent to and along the inner starting line of the first annular structure, perpendicular to the circumferential direction of the first annular structure, at any position on the inner starting line, the distance from the outer starting line of the second annular structure is selected from one of the following minimum distances, wherein the inner starting line of the first annular structure and the outer starting line of the second annular structure are the closest starting lines of two adjacent annular structures: a minimum distance of 0.2 mm, a minimum distance of 0.3 mm, a minimum distance of 0.4 mm, and a minimum distance of 0.5 mm. The minimum distance is preferably independent of the uniform width of the plurality of annular structures.

[0047] The plurality of ring structures are preferably non-concentric ring structures, and each of the plurality of ring structures includes the optical center or fitting point of the spectacle lens. Preferably, the center of each identical ring structure among the plurality of ring structures is randomly located, preferably located on the surface of the spectacle lens including the plurality of ring structures, such that each of the plurality of ring structures includes the optical center or fitting point of the spectacle lens. The center of each identical ring structure among the plurality of ring structures is "randomly located" when there is no rule to predict the position of the center of one ring structure based on the known position of the center of another ring structure.

[0048] Each of the plurality of annular structures comprises an optical center or fitting point of the spectacle lens, which preferably means that the plurality of annular structures are spaced apart from each other to provide an unstructured domain of the spectacle lens adjacent to and along the inner and outer starting lines of the same annular structure. The plurality of annular structures are preferably non-concentric annular structures, each comprising an optical center or fitting point of the spectacle lens. Preferably, the center of each annular structure is randomly located, preferably located on the surface of the spectacle lens including the plurality of annular structures, such that each annular structure comprises an optical center or fitting point of the spectacle lens.

[0049] The plurality of ring structures includes the plurality of ring structures, the center of each of the plurality of ring structures being randomly positioned as the optical center or fitting point of the spectacle lens. This preferably means that the plurality of ring structures may, in addition to the aforementioned plurality of ring structures, include one or more ring structures whose centers are not randomly positioned. Preferably, the one or more ring structures that are not randomly positioned are spaced apart from the plurality of ring structures, and preferably, the ring structures are spaced apart from each other to provide an unstructured domain of the spectacle lens adjacent to and along the inner and outer starting lines of any of the same ring structures.

[0050] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures having varying power. The spectacle lens is characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2).

[0051] The number n (n ≥ 2) of the n segments is chosen such that the n segments joined together form the same ring structure. The number n (n ≥ 2) of the n segments is chosen such that, preferably, the sum of the lengths of the n segments is equal to the length of the ring structure or the length of the same ring structure among the plurality of ring structures. The "length of the same ring structure" is the length of the same ring structure along its circumferential direction. The "length of the segment" formed from the starting point of segment i (i = 1 to n) to the ending point of segment i is defined as the length along the circumferential direction of the ring structure or the length along the circumferential direction of the same ring structure among the plurality of ring structures. The average surface focal length of each of the n segments along the circumferential direction is constant, i.e., the variation in the average surface focal length is zero at least along 50% of the length of the same segment, i.e., 0 D. The variation in surface average focal length is "zero" at least 50% of the length of the same segment, preferably including: the variation being lower than a threshold selected from at least one of the following: 0.06D, 0.09D, 0.12D. Preferably, the variation in surface average focal length is zero at least 50% of the length of the same segment. The starting point of segment i+1 is the ending point of segment i, which is also the center point between: the point where, along the circumferential direction, the surface average focal length of segment i begins to deviate from its constant surface average focal length; and the point where, along the circumferential direction, the surface average focal length of segment i+1 begins to remain at its constant surface average focal length. For i = n, segment n+1 is segment 1.

[0052] When a line passes through the common point of the more loop structures simultaneously at the starting point of segment i and the starting point of segment i' and / or the ending point of segment i and the ending point of segment i', the starting point and / or ending point of segment i (i = 1 to n) of the same loop structure in the more loop structures is not shifted relative to the starting point and / or ending point of segment i' (i' = 1 to n or i' = 1 to n') of another same loop structure in the more loop structures.

[0053] When no line passes simultaneously through the starting point of segment i and the starting point of segment i' and / or the ending point of segment i and segment i' from the common point of the more loop structures, the starting point and / or ending point of segment i (i = 1 to n) of the same loop structure in the more loop structures is shifted relative to the starting point and / or ending point of segment i' (i' = 1 to n or i' = 1 to n') of another same loop structure in the more loop structures.

[0054] In adjacent segments i and i+1 (i = 1 to n) of the same annular structure, the average surface focal length is different from each other at least along 50% of the length of each of the adjacent segments (where the change in average surface focal length is zero). For i = n, segment n+1 is segment 1.

[0055] For example, when there is a step between each adjacent cylindrical segment in the n segments of the same annular structure, the average surface focal length within each of the n segments is constant along the circumferential direction and constant in any direction perpendicular to the circumferential direction. Preferably, the average surface focal length of adjacent cylindrical segments separated by the step is different.

[0056] For example, where there is a smooth transition between each adjacent cylindrical segment in the n segments of the same annular structure, the average focal length of the surface within each of the n segments is constant along the circumferential direction and constant in any direction perpendicular to the circumferential direction, and this constantness is at least 50% along the length of the same cylindrical segment.

[0057] For example, in the case where there is a random transition between each adjacent cylindrical segment in the n segments of the same annular structure, the average focal length of the surface within each of the n segments is constant along the circumferential direction and constant in any direction perpendicular to the circumferential direction, and this constantness is at least along 50% of the length of the same cylindrical segment. The transition between adjacent cylindrical segments is random when there is no rule to predict the transition between adjacent cylindrical segments based on the known transition between other adjacent cylindrical segments.

[0058] Preferably, the length of segment i (i = 1 to n) of the same annular structure is within a range defined by a predetermined minimum length of segment i, the number n, and the length of the same annular structure. The predetermined minimum length of segment i is preferably selected from one of the following lengths: 0.1 mm, 0.2 mm, 0.25 mm, and 0.3 mm.

[0059] Preferably, the length of segment i (i = 1 to n) of the same annular structure is less than at least one of 90%, 80%, 70%, and 60% of the length of the same annular structure.

[0060] For example, the length of segment i (i = 1 to n) falls within one of the following ranges: - The length ranges from 0.2 mm to 140 mm. - The length ranges from 0.25 mm to 120 mm. - The length is in the range of 0.3 mm to 100 mm. - The length is in the range of 0.35 mm to 80 mm.

[0061] Preferably, a smooth transition or a random transition is 50% or less of the length of the segment.

[0062] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, one or more of the plurality of annular structures having varying power, and the spectacle lens is characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2), and the random component is that for each of the plurality of annular structures, the number n of the n segments is the same or different.

[0063] When the number n of the n segments in each of the plurality of ring structures is the same, the sum of the lengths of the n segments is equal to the length of the same ring structure in the plurality of ring structures, and preferably satisfies at least one of the following: - The length of at least one segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is different from the length of at least one segment i' (i' = 1 to n, i' ≠ i) of another ring structure in the more ring structures. The length of the at least one segment i is preferably a random length, that is, even if the length of any other segment h (h ≠ i) in the same ring structure is known, there is no rule to predict the length of the at least one segment i. - The length of each segment i (i = 1 to n) in the n segments of the same ring structure in the more ring structures is different from the length of each segment i' (i' = 1 to n, i' ≠ i) in another same ring structure in the more ring structures. The length of each segment i is preferably a random length, that is, there is no rule to predict the length of each segment i. - The starting point of segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is randomly shifted along the circumferential direction relative to the starting point of another segment i' (i' = 1 to n) of another same ring structure in the more ring structures, and / or the ending point of segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is randomly shifted along the circumferential direction relative to the ending point of another segment i' (i' = 1 to n) of another same ring structure in the more ring structures. The starting point and / or ending point of segment i (i = 1 to n) of the same ring structure in the more ring structures are randomly shifted relative to the starting point and / or ending point of segment i' (i' = 1 to n) of another same ring structure in the more ring structures when the following conditions are met: i) there is no line that simultaneously passes through the starting point of a) segment i and the starting point of segment i' and / or b) the ending point of segment i and the ending point of segment i' from a common point surrounded or encircled by the more ring structures toward the periphery of the eyeglass lens; and ii) even if the starting point of segment i is known, there is no rule to predict the starting point of segment i', and / or even if the ending point of segment i is known, there is no rule to predict the ending point of segment i'. - The starting point of segment i (i = 1 to n) of the n segments in the same ring structure of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of each other segment i', i'', i''', ... (i' = 1 to n, i'' = 1 to n, i''' = 1 to n, ...) of each different ring structure in the more ring structures, and / or the ending point of segment i (i = 1 to n) of the n segments in the same ring structure of the more ring structures is randomly shifted along the circumferential direction relative to the ending point of each other segment i', i'', i''', ... (i' = 1 to n, i'' = 1 to n, i''' = 1 to n, ...) of each different ring structure in the more ring structures. The starting point and / or ending point of segment i (i = 1 to n) of the same ring structure in the plurality of ring structures is randomly shifted relative to the starting point and / or ending point of each other segment i', i'', i''', ... (i' = 1 to n, i'' = 1 to n, i''' = 1 to n, ...) of each different ring structure in the plurality of ring structures when the following conditions are met: i) There is no line that simultaneously passes from a common point surrounded or encircled by the plurality of ring structures toward the periphery of the spectacle lens and a) the starting point of segment i and the starting point of each segment i', i'', i''', ... and / or b) the ending point of segment i and the ending point of each segment i', i'', i''', ...; and ii) Even if the starting point of segment i is known, there is no rule to predict the starting point of each segment i', i'', i''', ... and / or even if the ending point of segment i is known, there is no rule to predict the ending point of each segment i', i'', i''', ... - The surface average focal length of at least two segments i1 and i2 ((i1, i2) = 1 to n, i1 ≠ i2) in the same ring structure of the more ring structures is different from at least one of the following: - The average surface focal length of at least one other segment i3 (i3 = 1 to n, i1 ≠ i3 ≠ i2) of the same annular structure. Preferably, the average surface focal length of at least one of the segments i1, i2, and i3 is a random average surface focal length, that is, even if the average surface focal length of any other segment h (h ≠ i1, h ≠ i2, h ≠ i3) of the same annular structure is known, there is no rule to predict the average surface focal length of at least one of the segments i1, i2, and i3. - The surface average focal length of at least one segment of at least one of the n segments i1' and i2' ((i1', i2') = 1 to n, i1' ≠ i2') in at least one other same ring structure. Preferably, the surface average focal length of at least one segment i1, i2, i1', i2' is a random surface average focal length, that is, even if the surface average focal length of any other segment h of the same ring structure is known, or even if the surface average focal length of any other segment h' (h' ≠ i1, h' ≠ i2, h' ≠ i1', h' ≠ i2') of the at least one other same ring structure is known, there is no rule to predict the surface average focal length of at least one segment i1, i2, i1', i2'. - The surface average focal length of at least one segment of segments i1' and i2' ((i1', i2')' = 1 to n, i1' ≠ i2') in each of the more ring structures, preferably, the surface average focal length of at least one segment of segments i1, i2, i1', i2' is a random surface average focal length, that is, even if the surface average focal length of any other segment h of the same ring structure is known or even if the surface average focal length of any other segment h' (h' ≠ i1, h' ≠ i2, h' ≠ i1', h' ≠ i2') of each of the other ring structures is known, there is no rule to predict the surface average focal length of at least one segment of segments i1, i2, i1', i2'; - The average surface focal length of at least one segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is equal to the average surface focal length of at least one segment i' (i' = 1 to n) of the n segments in another same ring structure in the more ring structures, wherein the starting point of the at least one segment i is randomly shifted relative to the starting point of the at least one segment i' along the circumferential direction, and / or the ending point of the at least one segment i is randomly shifted relative to the ending point of the at least one segment i' along the circumferential direction, as defined above regarding the random shifts relative to the starting point and / or ending point of segments i and i'; - The average surface focal length of at least one segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is equal to the average surface focal length of at least one segment i', i'', i''', ... (i' = 1 to n, i'' = 1 to n, i''' = 1 to n, ...) of the n segments in each other same ring structure in the more ring structures, wherein the starting point of at least one segment i is randomly shifted along the circumferential direction relative to the starting point of at least one segment i', i'', i''', and / or the ending point of at least one segment i is randomly shifted along the circumferential direction relative to the ending point of at least one segment i', i'', i''', as defined above regarding the starting point and / or ending point of segments i, i', i'', i'''; - The average surface focal length of at least one segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is different from the average surface focal length of at least one segment i' (i' = 1 to n) of the n segments in another same ring structure in the more ring structures, wherein the starting point of the at least one segment i is randomly shifted relative to the starting point of the at least one segment i' along the circumferential direction, and / or the ending point of the at least one segment i is randomly shifted relative to the ending point of the at least one segment i' along the circumferential direction, as defined above regarding the random shifting relative to the starting point and / or ending point of segments i and i'; - The average surface focal length of at least one segment i (i = 1 to n) of the n segments in the same ring structure in the more ring structures is different from the average surface focal length of at least one segment i', i'', i''', ... (i' = 1 to n, i'' = 1 to n, i''' = 1 to n, ...) of the n segments in each of the other same ring structures in the more ring structures. The starting point of the at least one segment i is randomly shifted along the circumferential direction relative to the starting point of each of the at least one segment i', i'', i''', ... and / or the ending point of the at least one segment i is randomly shifted along the circumferential direction relative to the ending point of each of the at least one segment i', i'', i''', ... as defined above, relative to the starting point and / or ending point of segments i, i', i'', i'''.

[0064] When the number n of the n segments is different for each of the more ring structures, the sum of the lengths of the n segments is equal to the length of the same ring structure in the more ring structures, and preferably satisfies at least one of the following: - In one of the more ring structures, the length of each segment i (i = 1 to n) in the n segments of the same ring structure is equal, and the length is equal to the length of each segment i' (i' = 1 to n') in another ring structure, which is preferably a random length. The perimeter of the same ring structure is determined by the random length of a segment i (i = 1 to n), and by predefining that the random length is equal for each segment i (i = 1 to n) in the same ring structure, and by predefining the number n. For example, when the same annular structure and the same annular structure are adjacent annular structures (both encompassing the optical center or fitting point of the spectacle lens, i.e., both surrounding the optical center or fitting point of the spectacle lens, optionally having the same center), the same annular structure and the same annular structure are spaced apart by the unstructured region of the spectacle lens between the outer starting line of the one annular structure and the inner starting line of the other annular structure, and vice versa (i.e., the inner starting line of the one annular structure and the outer starting line of the other annular structure), the corresponding inner and outer starting lines being the closest starting lines of adjacent annular structures, and the corresponding inner and outer starting lines being determined by the length of the corresponding annular structure and the uniform width of the corresponding annular structure. Preferably, the length of each segment i is determined such that the unstructured region of the spectacle lens is located between adjacent annular structures; - In each of the more ring structures, the length of each segment i (i = 1 to n) in the n segments of the same ring structure is equal, and this length is preferably random. Preferably, the length of segment i is determined such that the unstructured domain of the spectacle lens is located between adjacent ring structures. The length of segment i can be determined such that adjacent ring structures are spaced equidistantly or unequally apart from each other; - The surface average focal length of a segment i (i = 1 to n) is repeated in at least one segment j (j ≠ i, segment j is not adjacent to segment i) of the same annular structure in the more annular structures, wherein the surface average focal length of the segment i is preferably a random surface average focal length. - In at least one segment j (j ≠ i, segment j is not adjacent to segment i) of the same ring structure in the more ring structures, the surface average focal length of a segment i (i = 1 to n) is repeated, the surface average focal length of the segment i is preferably random surface average focal length, the surface average focal length of a segment i' (i' = 1 to n') of another same ring structure is equal to the surface average focal length of the segment i, the surface average focal length of the segment i' is repeated in another segment j' (j' ≠ i', segment j' is not adjacent to segment i') of the same ring structure, the starting point of the segment i is randomly shifted relative to the starting point of the segment i', and / or the ending point of the segment i is randomly shifted relative to the ending point of the segment i'. The starting point and / or ending point of segment i (i = 1 to n) of the same ring structure in the more ring structures are randomly shifted relative to the starting point and / or ending point of segment i' (i' = 1 to n') of another same ring structure in the more ring structures when the following conditions are met: i) there is no line that simultaneously passes through the starting point of a) segment i and the starting point of segment i' and / or b) the ending point of segment i and the ending point of segment i' from the common point surrounded or encircled by the more ring structures toward the periphery of the eyeglass lens; and ii) even if the starting point of segment i is known, there is no rule to predict the starting point of segment i', and / or even if the ending point of segment i is known, there is no rule to predict the ending point of segment i'. - In at least one segment j (j ≠ i, segment j is not adjacent to segment i) of the same ring structure in the plurality of ring structures, the surface average focal length of a segment i (i = 1 to n) is repeated, wherein the surface average focal length of a segment i is preferably a random surface average focal length, and the surface average focal length of a segment i', i'', i''', ... (i' = 1 to n', i'' = 1 to n', i''' = 1 to n', ...) of each other ring structure is equal to the surface average focal length of the segment i, wherein the surface average focal length of each segment j', j'', j''', ... (j' ≠ i', segment j' is not adjacent to segment i', j'' ≠ i'', segment j'' is not adjacent to segment i'', j''' ≠ i'') of each other ring structure in the plurality of ring structures is repeated, wherein the surface average focal length of a segment i' is equal to the surface average focal length of a segment i, wherein the surface average focal length of a segment j', j'', j''', ... (j' ≠ i', segment j' is not adjacent to segment i'', j''' ≠ i'') of each other ring structure in the plurality of ring structures is repeated, wherein the surface average focal length of a segment i' is preferably a random surface average focal length, wherein the surface average focal length of a segment i' is equal to the surface average focal length of a segment i' in each other ring structure in the plurality of ring structures is equal to the surface average focal length of a segment i', wherein the surface average focal length of a segment i' is equal to the surface average focal length of a segment i', and ... The average focal length of segments i', i'', i''', ... is repeated in the segment j''', which is not adjacent to segment i'''. The starting point of segment i is randomly shifted relative to the starting point of each of segments i', i'', i''', ... and / or the ending point of segment i is randomly shifted relative to the ending point of each of segments i', i'', i''', ... The starting point and / or ending point of segment i (i = 1 to n) of the same ring structure in the plurality of ring structures is randomly shifted relative to the starting point and / or ending point of each other segment i', i'', i''', ... (i' = 1 to n', i'' = 1 to n', i''' = 1 to n', ...) of each different ring structure in the plurality of ring structures when the following conditions are met: i) There is no line that simultaneously passes through the starting point of segment i and the starting point of each segment i', i'', i''', ... and / or b) from a common point surrounded or encircled by the plurality of ring structures toward the periphery of the spectacle lens. The endpoint of segment i and the endpoint of each segment i', i'', i''', ...; and ii) even if the starting point of segment i is known, there is no rule to predict the starting point of each segment i', i'', i''', ... and / or even if the endpoint of segment i is known, there is no rule to predict the endpoint of each segment i', i'', i''', ...

[0065] The number n of the n segments is the same or different for each of the more ring structures, and the sum of the lengths of the n segments is equal to the length of the same ring structure among the more ring structures. This is preferably applicable when the plurality of ring structures includes the more ring structures and satisfies one of the following conditions: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0066] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the plurality of annular structures each has a varying power, characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2), and the random component is that each of the n segments has a random surface average power.

[0067] A segment i (i = 1 to n) of the n segments of a ring structure has a “random surface average focal length” when the following condition is met: even if the surface average focal length of segment i is known, there is no rule to predict the surface average focal length of any other segment j (j ≠ i) of the ring structure. Alternatively or additionally, a segment i (i = 1 to n) of the n segments of a ring structure has a “random surface average focal length” when the following condition is met: even if the surface average focal length of any other segment h (h ≠ i) of the ring structure is known, there is no rule to predict the surface average focal length of segment i.

[0068] Accordingly, segment i (i = i to n) of the n segments of the same ring structure in the more ring structures has a “random surface average focal length” when the following conditions are met: even if the surface average focal length of segment i is known, there is no rule to predict the surface average focal length of any other segment j (j ≠ i) of the same ring structure; or, even if the surface average focal length of segment i is known, there is no rule to predict the surface average focal length of any or any other segment i', i'', i''', ... (i' = 1 to n', i'' = 1 to n'', i''' = 1 to n''', ...) of any or every other ring structure in the more ring structures. Alternatively or additionally, segment i (i = i to n) of the n segments of the same ring structure in the more ring structures has a “random surface average focal length” when the following conditions are met: even if the surface average focal length of any other segment h (h ≠ i) of the same ring structure is known, there is no rule to predict the surface average focal length of segment i; or, even if the surface average focal length of any or every other segment h', h'', h''', ... (h' ≠ i, h'' ≠ i, h''' ≠ i, ...) of any or every other ring structure in the more ring structures is known, there is no rule to predict the surface average focal length of segment i.

[0069] Preferably, a) the random surface average focal length of a segment i (i = 1 to n) of a ring structure or b) the random surface average focal length of each segment i (i = 1 to n) of the same ring structure in the plurality of ring structures is within one of the following ranges: - The average focal length of the random surface ranges from 0.2 D to 15 D. - The average focal length of the random surface ranges from 0.3 D to 14 D. - The average focal length of the random surface ranges from 0.4 D to 13 D. - The average focal length of the random surface ranges from 0.5 D to 12 D. - The average focal length of the random surface ranges from 1 D to 11 D. - The average focal length of the random surface ranges from 1.5 D to 10 D.

[0070] For at least two of the more ring structures, or for each segment i (i = 1 to n) of each ring structure, the random surface average focal length (preferably selected from one of the aforementioned ranges) can be within the same range. For at least two of the more ring structures, or for each segment i (i = 1 to n) of each ring structure, the random surface average focal length (preferably selected from one of the aforementioned ranges) can be within different ranges.

[0071] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0072] In each of the plurality of annular structures composed of n segments (n ≥ 2), each of the n segments has a random surface average focal length, and the sum of the lengths of the n segments is equal to the length of the same annular structure in the plurality of annular structures. The above condition preferably applies when the plurality of annular structures include the plurality of annular structures and satisfies one of the following: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0073] Refer to the above description of its segment having a ring-shaped structure with random surface average focal length.

[0074] Selecting segments with random surface average focal lengths simultaneously provides both focused and defocused light, which varies to provide a dynamic and non-uniform blurred signal at the retina. This is believed to minimize the adaptation or habituation effect for eyeglass lens wearers. An additional beneficial effect of dividing each of one or more ring structures into segments with random surface average focal lengths is that the manufacturability of the segments along the one or more ring structures is improved relative to arbitrary random variations in the surface average focal length along the one or more ring structures.

[0075] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the plurality of annular structures each has a varying power, and the spectacle lens is characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2), and the random component is that each of the n segments has a random length.

[0076] A segment i (i = 1 to n) of the n segments of a ring structure has a "random length" when the following condition is met: even if the length of segment i is known, there is no rule to predict the length of any other segment j (j ≠ i) of the ring structure. Alternatively or additionally, a segment i (i = 1 to n) of the n segments of a ring structure has a "random length" when the following condition is met: even if the length of any other segment h (h ≠ i) of the ring structure is known, there is no rule to predict the length of segment i.

[0077] Accordingly, a segment i (i = i to n) of the n segments of the same ring structure in the more ring structures has a “random length” when the following conditions are met: even if the length of segment i is known, there is no rule to predict the length of any other segment j (j ≠ i) of the same ring structure; or, even if the length of segment i is known, there is no rule to predict the length of any or any other segment i', i'', i''', ... (i' = 1 to n', i'' = 1 to n'', i''' = 1 to n''', ...) of any or every other ring structure in the more ring structures. Alternatively or additionally, segment i (i = i to n) of the n segments of the same ring structure in the more ring structures has a “random length” when the following conditions are met: even if the length of any other segment h (h ≠ i) of the same ring structure is known, there is no rule to predict the length of segment i; or, even if the length of any or every other segment h', h'', h''', ... (h' ≠ i, h'' ≠ i, h''' ≠ i, ...) of any or every other ring structure in the more ring structures is known, there is no rule to predict the length of segment i.

[0078] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0079] In each of the plurality of ring structures consisting of n segments (n ≥ 2), each of the n segments has a random length, and the sum of the lengths of the n segments is equal to the length of the same ring structure in the plurality of ring structures. This condition is preferably applicable when the plurality of ring structures include the plurality of ring structures and one of the following conditions is met: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0080] Refer to the paragraphs described above, which have a ring-like structure of random length.

[0081] Selecting segments of random length simultaneously provides both focused and defocused light, which varies to deliver a dynamic and non-uniform blurred signal at the retina. This is believed to minimize the adaptation or habituation effect for eyeglass lens wearers. An additional beneficial effect of dividing each of one or more ring structures into segments of random length is that the manufacturability of the segments along the one or more ring structures is improved relative to arbitrary random variations in the surface average focal power along the one or more ring structures.

[0082] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the plurality of annular structures each has a varying power, and the spectacle lens is characterized in that each of the plurality of annular structures is composed of n segments (n ≥ 2), and wherein the random component is at least one of the following: a) The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. b) The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures.

[0083] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0084] The starting point and / or ending point of segment i (i = 1 to n) of the ring structure are randomly shifted relative to segment i' (i' = 1 to n, or i' = 1 to n') of another ring structure in the plurality of ring structures. This is preferably applicable when the plurality of ring structures include the plurality of ring structures and one of the following conditions is met: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0085] Refer to the paragraphs above that describe the ring-shaped structures in which the starting and / or ending points of the segments are randomly shifted.

[0086] As previously mentioned, randomly shifting the start or end point of a selected segment simultaneously provides both focused and defocused light, which varies to provide a dynamic and non-uniform blur signal at the retina. This is believed to minimize the adaptation or habituation effect for spectacle lens wearers. An additional beneficial effect of dividing each of the multiple ring structures into segments with randomly shifted start or end points is that the manufacturability of the segments along the same ring structure is improved relative to arbitrary random variations in the surface average focal power along the same ring structure.

[0087] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the plurality of annular structures each has a varying power, and the spectacle lens is characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2), and the random component is that each transition between adjacent segments among the n segments is a random transition.

[0088] The transition between adjacent segments is a "random transition" when the following condition is met: even if the transition between the adjacent segments is known, there is no rule to predict the transition between any other adjacent segments of the ring structure. Alternatively or additionally, the transition between adjacent segments is a "random transition" when the following condition is met: even if the transition between other adjacent segments of a ring structure is known, there is no rule to predict the transition between the adjacent segments.

[0089] Accordingly, the transition between adjacent segments of the same ring structure in the more ring structures is a "random transition" when the following conditions are met: even if the transition of the adjacent segments is known, there is no rule to predict the transition of any other adjacent segment of the same ring structure; or, even if the transition of the adjacent segments is known, there is no rule to predict the transition of any or every other adjacent segment of any or every other ring structure in the more ring structures. Alternatively or additionally, the transition between adjacent segments of the same ring structure in the more ring structures is a "random transition" when the following conditions are met: even if the transition between adjacent segments of the same ring structure is known, there is no rule to predict the transition between the adjacent segments; or, even if the transition between adjacent segments of any or every other ring structure in the more ring structures is known, there is no rule to predict the transition between the adjacent segments.

[0090] The transition between adjacent segments is preferably selected from at least one of the following groups: step transition, S-shaped transition, and any other smooth transition.

[0091] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0092] Each transition between adjacent segments is random, and the above condition preferably applies when the plurality of ring structures include the plurality of ring structures and one of the following conditions is met: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0093] Refer to the paragraph describing the transition above.

[0094] The random transitions between selected segments simultaneously provide both focused and defocused light, which vary to deliver a dynamic and non-uniform blur signal at the retina. This is believed to minimize the adaptation or habituation effect on eyeglass wearers.

[0095] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the plurality of annular structures each has a varying power, and the spectacle lens is characterized in that each of the plurality of annular structures is composed of n segments (n ≥ 2), and the random component is that, for at least two of the plurality of annular structures, the uniform width is a random uniform width.

[0096] At least two of the more ring structures have a “random uniform width” when the following condition is met: even if the uniform width of at least the first ring structure is known, there is no rule to predict the uniform width of at least the second ring structure.

[0097] Preferably, the uniform width of each of the ring structures or the plurality of ring structures is within one of the following ranges: - The range is from 0.1 mm to 8 mm. - The range is from 0.2 mm to 7 mm. - The range is from 0.3 mm to 6 mm. - Range from 0.4 mm to 5 mm.

[0098] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0099] At least two of the plurality of annular structures have random uniform widths, and the above condition preferably applies when the plurality of annular structures include the plurality of annular structures and one of the following conditions is met: - The plurality of ring structures are concentric ring structures, which include (i.e. surround or encircle) the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include (i.e., surround or encircle) the optical center or fitting point of the spectacle lens. - Each of the plurality of ring structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes (i.e., surrounds or encircles) the optical center or fitting point of the spectacle lens.

[0100] Choosing a ring structure with randomly varying uniform widths provides both focused and defocused light, which varies to provide a dynamic and non-uniform blurred signal at the retina. This is believed to minimize the adaptation or habituation effect of eyeglass lens wearers.

[0101] Preferably, the spectacle lens comprises a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the annular structures each has a varying power, characterized in that the one annular structure is composed of n segments (n ≥ 2), or each of the plurality of annular structures is composed of n segments (n ≥ 2), and wherein k different surface average powers of each of the n segments are repeated along the circumferential direction of the same annular structure, the number n of the n segments being a multiple of the number k of the different surface average powers, and the random component being selected from at least one of the following: i) The random length of each segment n of the same ring structure. ii) The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. iii) The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures.

[0102] Repeating k different surface average focal lengths for each of the n segments along the circumferential direction of the same annular structure, wherein the number n of the n segments is a multiple of the number k of the different surface average focal lengths, this preferably includes at least one of the following: - Along the circumferential direction of the same annular structure, the surface average focal length k of segment i (i = 1 to n) is repeated in at least one segment j (j ≠ i, segment j is not adjacent to segment i). - The surface average focal length k of segment i (i = 1 to n) of the ring structure is repeated in at least one segment i' (i' = 1 to n') of at least one other ring structure in the plurality of ring structures. - The surface average focal length k of the segment i (i = 1 to n) of the repeating annular structure in at least one segment i', i'', i''', ... (i' = 1 to n', i'' = 1 to n'', i''' = 1 to n''', ...) of each of the more annular structures. - Repeat a series of different surface average focal lengths k, k+1, ... along the circumferential direction of adjacent segments i, i+1, ... (i = 1 to n), where for i = n, segment n+1 is segment 1. - In at least one of the more annular structures, a series of different surface average focal lengths k, k+1, ... (i = 1 to n) of adjacent segments i, i+1, ... are repeated, where for i = n, segment n+1 is segment 1. - In each of the other annular structures of the plurality of annular structures, a series of different surface average focal lengths k, k+1, ... (i = 1 to n) of adjacent segments i, i+1, ... are repeated, where for i = n, segment n+1 is segment 1.

[0103] In the case where a series of k different average focal lengths of adjacent segments are repeated only along the circumferential direction of the same annular structure, preferably, the number n of the n segments can be divided by the k different average focal lengths of the surfaces.

[0104] For example, when the number of different surface average focal lengths k is two, the different surface average focal lengths alternate along the circumferential direction of the same annular structure, and the number n of the segments i (i = 1 to n) of the same annular structure is an even number.

[0105] Similarly, for example, in the case of repeating a series of m adjacent segments of different lengths along the circumferential direction of the same ring structure, preferably, the number n of the n segments is divisible by the m different lengths. For example, if the number m of different lengths is two, then the different lengths alternate along the circumferential direction of the same ring structure, and the number n of the segments i (i = 1 to n) of the same ring structure is even.

[0106] In the case where each of the plurality of ring structures is composed of n segments (n ≥ 2), for at least two of the plurality of ring structures, n can be the same or different.

[0107] The average focal lengths of k different surfaces of each of the n segments are repeated along the circumferential direction of the same annular structure, where the number n of the n segments is a multiple of the number k of the average focal lengths of the different surfaces, and a random component is selected as described above. This is preferably applicable when the plurality of annular structures includes more than one annular structure and one of the following conditions is met: - The plurality of ring structures are concentric ring structures, and these concentric ring structures include the optical center or fitting point of the spectacle lens. - The additional ring structures are concentric ring structures, which include the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes the optical center or fitting point of the spectacle lens. - Each of the plurality of annular structures includes the optical center or fitting point of the spectacle lens.

[0108] As previously mentioned, selecting random lengths for each segment or randomly shifting the start or end points of the segments simultaneously provides both focused and defocused light, which varies to provide a dynamic and non-uniform blur signal at the retina. This is believed to minimize the adaptation or habituation effect of the spectacle wearer. An additional beneficial effect of dividing each of the multiple ring structures into segments with repeatable surface average power values ​​is that the non-uniform blur signal at the retina (which is believed to minimize the adaptation or habituation effect of the spectacle wearer) is quite effective, regardless of the spectacle wearer's viewing direction.

[0109] The dataset includes at least one of the following types of data: (i) The numerical designation of the spectacle lens as described above, indicating the intended use for manufacturing the spectacle lens as described above. (ii) Data containing computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses as described above.

[0110] Alternatively, the dataset may include a digital representation of the spectacle lens as described above, configured to be fed to one or more manufacturing machines for producing the spectacle lens as described above. The dataset may be stored on a computer-readable storage medium, carried by a data signal, or in the form of a data signal. The computer-readable storage medium may be a non-transitory tangible computer-readable storage medium.

[0111] As previously described, the “numerical representation” of an eyeglass lens is a mathematical description of the surface of the eyeglass lens that includes and encompasses multiple annular structures. Alternatively, the mathematical description may be a piecewise mathematical description of the surface of the eyeglass lens that includes the multiple annular structures and for each of the multiple annular structures.

[0112] The numerical designation of the spectacle lens is configured for use in manufacturing spectacle lenses as described above.

[0113] The numbers for spectacle lenses are “configured” for use in manufacturing spectacle lenses, for example, when the numbers indicate a corresponding casting surface for manufacturing a mold used to cast (i.e., manufacture) the spectacle lens or to cast a semi-finished spectacle lens blank (which, as defined in Clause 3.8.1 of ISO 13666:2019(E), is used to manufacture the spectacle lens).

[0114] The method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin. The eyeglass lens includes a plurality of annular structures, each annular structure having a uniform width, and one or more of the annular structures each having a varying power. The method is characterized in that… - i) For one or more structural features of the one ring structure, determine one or more random components, or ii) For one or more structural features of each of the more ring structures, determine one or more random components.

[0115] In other words, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to use that digital twin to manufacture the eyeglass lens, which includes a plurality of annular structures, each annular structure having a uniform width, and one or more of the annular structures each having a varying power. The method is characterized by the following steps: For a structural feature of the aforementioned ring structure, determine a random component, or - For a structural feature of the aforementioned ring structure, determine more random components, or - For each of the more ring structures, determine a random component for more structural features of each ring structure, or - For each of the more ring structures, determine more random components for more structural features of each ring structure.

[0116] A "digital twin of an eyeglass lens" is a mathematical description of the front surface of the eyeglass lens, a mathematical description of the rear surface of the eyeglass lens, and a mathematical description of the refractive index distribution of the optical material of the eyeglass lens. The digital twin of the eyeglass lens is used for manufacturing eyeglass lenses. The mathematical description includes the orientation from the front surface to the rear surface. Therefore, preferably, the front and rear surfaces are described in the same coordinate system, or the transformation from the coordinate system of the front surface to the coordinate system of the rear surface is known, or vice versa. The mathematical description is preferably a closed-form mathematical description. The mathematical description can be discretized into x, y, z positions; for example, the discrete x, y positions can be defined according to any chosen pattern. Preferably, the discrete x, y, z positions located on or belonging to at least one of the front and rear surfaces are included in the digital twin of the eyeglass lens.

[0117] The one random component is preferably determined by a random function, and the more random components are preferably determined by multiple random functions. The random function is preferably selected from at least one of the following: a random function for variations in the average focal length of the surface; a random function for variations in the uniform width of at least two of the more ring structures; a random function for variations in the length of segment i (i = 1 to n) of a ring structure composed of n segments; and a random function for shifting segment i (i = 1 to n) of a ring structure composed of n segments relative to segment i' (i' = 1 to n', i ≠ i') of another ring structure composed of n' segments from at least two different ring structures among the more than two ring structures. In other words, a random function used to shift segment i (i = 1 to n) of a ring structure consisting of n segments causes the starting point and / or ending point of one or more segments i (i = 1 to n) to be randomly offset relative to segment i' (i' = 1 to n', i ≠ i') of another ring structure consisting of n' segments in at least two of the more ring structures.

[0118] The "random function used to represent the variation of the surface average focal length" is defined as a mathematical function, where, i) The input value is the position along a loop path within one of the loop structures or along a loop path within the same loop structure of each of the more loop structures. ii) The output value is the surface average focal length at the stated location, and iii) There is a random function relationship between the input value and the output value.

[0119] "Position along the loop path" is a point obtained by measuring the distance along the loop path from its predefined origin. The "predefined origin" of the loop path is the intersection of the loop path and an arbitrarily selected predefined reference line that extends from a common point to the periphery of the spectacle lens. The arbitrarily selected predefined reference line has an intersection point with each loop path within any loop structure of the spectacle lens.

[0120] The "random function relationship" between the input and output values ​​is a functional relationship that includes at least one random parameter. The "random parameter" is determined by a predefined probability distribution, such as a normal distribution with a predefined mean and a predefined standard deviation. An example of a random function relationship is a function f(xr), where x is the position along a loop path and r is the random parameter. The function f(xr) can be a periodic function that switches between at least two predefined surface average focal length values ​​P1 and P2. Another example of a random function relationship is a periodic function f(x), where x is the position along a loop path and r is a random parameter that switches between at least two random surface average focal length values ​​P1 and P2, where P1 is determined by a normal distribution with a predefined mean and a predefined standard deviation. 10 The variance σ1 is determined by a normal distribution, and P2 is determined by the mean P. 20 The normal distribution of variance σ² is determined.

[0121] The "random function for the variation of the uniform width" is a predefined probability distribution, such as a normal distribution with a predefined mean and a predefined standard deviation. For example, the uniform width of each of the more ring structures is determined by a distribution with a mean w0 and a standard deviation σ. w The normal distribution is determined.

[0122] "The random function for the length variation of segment i in the ring structure" is a predefined probability distribution, such as a normal distribution with a predefined mean and a predefined standard deviation, used to define the length of segment i. For example, the length of each segment i is determined by a distribution with a mean l0 and a standard deviation σ. l The normal distribution is determined.

[0123] "The random function for the change in the displacement of segment i in the ring structure" is a predefined probability distribution, such as a normal distribution with a predefined mean and a predefined standard deviation, used to define the position of the start and / or end point of segment i along the ring path within the ring structure.

[0124] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - For the aforementioned ring structure, determine n segments (n ≥ 2), or - For each of the more ring structures in the plurality of ring structures, determine n segments (n ≥ 2).

[0125] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine the random component such that for each of the more ring structures, the number n of the n segments is the same or different.

[0126] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine the random component such that each of the n segments has a random surface average focal length.

[0127] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine a random component such that each of the n segments has a random length.

[0128] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine one of the random components to achieve at least one of the following: - The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. - The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures.

[0129] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine a random component such that each transition between adjacent segments in the n segments is a random transition.

[0130] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - Determine the random component such that the uniform width is the random uniform width of at least two of the more ring structures.

[0131] Preferably, the method is configured to calculate a digital twin of an eyeglass lens using a computer, and to manufacture the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, and one or more of the plurality of annular structures each having a varying power, the method being characterized by the following steps: - The random component is determined to be at least one of the following: - The random length of each segment n in the same ring structure. - The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. - The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures. In order to repeat the k different surface average focal lengths of each of the n segments along the circumferential direction of the same annular structure, the number n of the n segments is a multiple of the number k of the different surface average focal lengths.

[0132] The definitions and advantages given earlier should apply to the methods described above.

[0133] The computer is configured to perform the method described above.

[0134] Preferably, the data processing system includes a processor and a storage medium coupled to the processor, wherein the processor is adapted to perform the following steps: based on a computer program stored on the storage medium, i) determining a random component or more random components for a structural feature or more structural features of the one ring structure, or ii) determining a random component or more random components for a structural feature or more structural features of each of the more ring structures.

[0135] A computer program includes instructions that, when executed by a computer, cause the computer to perform the methods described above.

[0136] Preferably, the computer program is stored on a non-transitory tangible computer-readable storage medium, and the computer program includes instructions that, when executed by a computer, cause the computer to perform the methods described above.

[0137] The computer program is stored on the computer-readable storage medium.

[0138] Preferably, the computer-readable storage medium is a non-tangible computer-readable storage medium.

[0139] The data signal carries the computer program.

[0140] The method described above is further configured to manufacture eyeglass lenses based on a digital twin of the eyeglass lens calculated according to the method. In other words, the method is characterized by the following steps: manufacturing eyeglass lenses based on a digital twin of the eyeglass lens calculated by the method described above, i.e., based on the output data of the method described above.

[0141] Example: Example 1: A spectacle lens comprising a plurality of annular structures, each annular structure having a uniform width, wherein one or more of the annular structures have varying power. Its features are, The variation in the average focal length of the surface includes one or more random components, the variation being along a ring path within the one ring structure or along a ring path within the same ring structure of each of the more ring structures.

[0142] Example 2: The spectacle lens according to Example 1 is characterized in that the one ring structure is composed of n segments (n ≥ 2), or each of the more ring structures is composed of n segments (n ≥ 2).

[0143] Example 3: The spectacle lens according to Example 2, characterized in that the random component is that, for each of the more ring structures, the number n of the n segments is the same or different.

[0144] Example 4: The spectacle lens according to any one of Examples 2 to 3 above, characterized in that the random component is that each of the n segments has a random surface average focal power.

[0145] Example 5: The spectacle lens according to any one of Examples 2 to 4 above, characterized in that the random component is that each of the n segments has a random length.

[0146] Example 6: The spectacle lens according to any one of Examples 2 to 5 above, characterized in that the random component is selected from at least one of the following: a) The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. b) The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures.

[0147] Example 7: The spectacle lens according to any one of Examples 2 to 6 above, characterized in that the random component is that each transition between adjacent segments among the n segments is a random transition.

[0148] Example 8: The spectacle lens according to any one of Examples 2 to 7 above, characterized in that the random component is that the uniform width is the random uniform width of at least two of the more ring structures.

[0149] Example 9: A spectacle lens according to any one of Examples 2 to 8, characterized in that each of the n segments is repeated in a number k different surface average focal lengths along the circumferential direction of the same annular structure, wherein the number n of the n segments is a multiple of the number k of different surface average focal lengths, and the random component is selected from at least one of the following: i) The random length of each segment n of the same ring structure. ii) The starting point of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the starting point of at least one of the n' segments of at least one other ring structure in the more ring structures. iii) The endpoint of one of the n segments of the more ring structures is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other ring structure in the more ring structures.

[0150] Example 10: A dataset comprising at least one of the following types of data: (i) A numerical representation of a spectacle lens according to any one of Examples 1 to 9, wherein the numbers indicate the intended use in manufacturing a spectacle lens according to any one of Examples 1 to 9. (ii) Data containing computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses according to any one of Embodiments 1 to 9.

[0151] Example 11: A method configured to calculate a digital twin of an eyeglass lens using a computer, for manufacturing the eyeglass lens using the digital twin, the eyeglass lens comprising a plurality of annular structures, each annular structure having a uniform width, one or more of the plurality of annular structures each having a varying power, the method characterized in that... - i) For one or more structural features of the one ring structure, determine one or more random components, or ii) For one or more structural features of each of the more ring structures, determine one or more random components.

[0152] Example 12: A computer program including instructions that, when executed by a computer, cause the computer to perform the method according to Example 11.

[0153] Example 13: A computer-readable storage medium on which a computer program according to Example 12 is stored.

[0154] Example 14: A data signal carrying a computer program according to Example 12.

[0155] Example 15: The method according to Example 11 is further configured to manufacture eyeglass lenses based on a digital twin of the eyeglass lens calculated according to Example 11. Detailed Implementation

[0156] Figure 1 This is a plan view of spectacle lens 101, which includes three annular structures 102, 103 and 104, each annular structure having a variation in surface average focal power along an annular path within each of the three annular structures.

[0157] exist Figure 1 In the middle, the unstructured region of the innermost annular structure 102 includes a common point and the surface power of the surface comprising the three annular structures that support the spectacle lens. Each annular structure 102, 103, 104 has a uniform width and is composed of segments (light-colored segments and dark-colored segments). Each segment of the annular structure has a random length, and the start and / or end points of each segment of the innermost annular structure are randomly shifted relative to the start and / or end points of each segment of the other two annular structures, and the transition between adjacent segments is random (not shown).

[0158] Figure 2 This is a plan view of spectacle lens 201, which includes two annular structures 202 and 203. Each annular structure has a variation in average surface power along an annular path within each of the two annular structures. Each of the annular structures 202 and 203 has a uniform width and is composed of segments with varying surface power.

[0159] Figure 2(Side view of spectacle lens 201) illustrates the path of light passing through spectacle lens 201, where two annular structures 202 and 203 cause focused and defocused light to be generated at the retina. The unstructured region 204 of the innermost annular structure 202 has a surface focal length such that light passing through it is focused at the retina 204a of the eye, as shown. Light passing through the lighter segment of annular structure 202 is focused at 202a in front of the retina, and then continues to form a blurred area on the retina. Similarly, the lighter and darker segments of annular structure 203 are focused in front of the retina at different distances 203a and 203b from the retina, and then continue to form a blurred area on the retina. Light passing through the unstructured region of the spectacle lens is focused on the retina. Therefore, at the retina 205, the light is both focused and defocused.

[0160] Figure 3 This is a plan view of 16 annular structures of an eyeglass lens. These annular structures have variations in surface average power along annular paths within each annular structure. These 16 annular structures will be placed concentrically with the optical center of the eyeglass lens. The unstructured domain 304 of the innermost annular structure 303 should encompass the optical center of the eyeglass lens. Each of these 16 annular structures has a different length and a uniform width. Each annular structure shown in Example 303 consists of segments with random lengths and random surface average powers. The transitions between segments are random. The start and / or end points of the light and dark segments in adjacent annular structures are randomly shifted.

Claims

1. A spectacle lens (101, 201) comprising a plurality of annular structures (102, 103, 104, 202, 203, 303), each of the plurality of annular structures having a uniform width, each of the plurality of annular structures having a path within the same structure, the path starting from a point within the same structure, surrounding an unstructured domain (204, 304) of the same structure, and ending again at said point. One or more of the multiple annular structures (102, 103, 104, 202, 203, 303) each have varying focal lengths. Its features are, The variation in surface average focal length includes one or more random components, said variation along a loop path within one of the plurality of loop structures (102, 103, 104, 202, 203, 303) or along a loop path within the same loop structure (102, 103, 104, 202, 203, 303) of each of the plurality of loop structures (102, 103, 104, 202, 203, 303). The random components are: i) The structural features of the ring structure (102, 103, 104, 202, 203, 303), and even if the variation of the structural features along a portion of the circumference of the ring structure (102, 103, 104, 202, 203, 303) is known, there is no rule to predict the variation of the structural features along the circumference of the ring structure (102, 103, 104, 202, 203, 303), or ii) The structural features of each of the more ring structures (102, 103, 104, 202, 203, 303) are known, and even if the variation of the structural features along a portion of the circumference of the same ring structure (102, 103, 104, 202, 203, 303) in the more than ring structures (102, 103, 104, 202, 203, 303) is known, there is no rule to predict the variation of the structural features along the circumference of the same ring structure (102, 103, 104, 202, 203, 303) in the more than ring structures (102, 103, 104, 202, 203, 303), or iii) The structural features of the more ring structures (102, 103, 104, 202, 203, 303) are known, and even if the variation of the structural features along the circumference of the first ring structure (102, 103, 104, 202, 203, 303) in the more ring structures (102, 103, 104, 202, 203, 303) is known, there is no rule to predict the variation of the structural features along the circumference of the second ring structure (102, 103, 104, 202, 203, 303) in the more ring structures (102, 103, 104, 202, 203, 303).

2. The spectacle lens (101, 201) according to claim 1, characterized in that, The ring structure (102, 103, 104, 202, 203, 303) is composed of n segments, n ≥ 2, or each of the more ring structures (102, 103, 104, 202, 203, 303) is composed of n segments, n ≥ 2.

3. The spectacle lens (101, 201) according to claim 2, characterized in that, The random component is that, for each of the more ring structures (102, 103, 104, 202, 203, 303), the number n of the n segments is the same or different.

4. The spectacle lens (101, 201) according to any one of claims 2 to 3, characterized in that, The random component is that each of the n segments has a random surface average focal length.

5. The spectacle lens (101, 201) according to any one of claims 2 to 4, characterized in that, The random component is that each of the n segments has a random length.

6. The spectacle lens (101, 201) according to any one of claims 2 to 5, characterized in that, The random component is selected from at least one of the following: a) The starting point of a segment of one of the n segments of the more than n ring structures (102, 103, 104, 202, 203, 303) is randomly shifted along the circumferential direction relative to the starting point of at least one other segment of at least one of the n' segments of at least one other ring structure (102, 103, 104, 202, 203, 303) in the more than n ring structures (102, 103, 104, 202, 203, 303). b) The endpoint of a segment of one of the n segments of the more than n ring structures (102, 103, 104, 202, 203, 303) is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other segment of at least one other ring structure (102, 103, 104, 202, 203, 303) in the more than n ring structures (102, 103, 104, 202, 203, 303).

7. The spectacle lens (101, 201) according to any one of claims 2 to 6, characterized in that, The random component is that each transition between adjacent segments in the n segments is a random transition.

8. The spectacle lens (101, 201) according to any one of claims 2 to 7, characterized in that, The random component is that the uniform width is the random uniform width of at least two of the more annular structures (102, 103, 104, 202, 203, 303).

9. The spectacle lens (101, 201) according to any one of claims 2 to 8, characterized in that, The number of different surface average focal lengths of each of the n segments is k, repeated along the circumferential direction of the same annular structure (102, 103, 104, 202, 203, 303), where the number n of the n segments is a multiple of the number k of the different surface average focal lengths, and the random component is selected from at least one of the following: i) The random length of each segment n of the same ring structure (102, 103, 104, 202, 203, 303), ii) The starting point of a segment of one of the n segments of the more than n ring structures (102, 103, 104, 202, 203, 303) is randomly shifted along the circumferential direction relative to the starting point of at least one other segment of at least one of the n' segments of at least one other ring structure (102, 103, 104, 202, 203, 303) in the more than n ring structures (102, 103, 104, 202, 203, 303). iii) The endpoint of a segment of one of the n segments of the more than n ring structures (102, 103, 104, 202, 203, 303) is randomly shifted along the circumferential direction relative to the endpoint of at least one of the n' segments of at least one other segment of at least one other ring structure (102, 103, 104, 202, 203, 303) in the more than n ring structures (102, 103, 104, 202, 203, 303).

10. A dataset comprising at least one of the following types of data: (i) The digital representation of the spectacle lens (101, 201) according to any one of claims 1 to 9, wherein the digital representation is configured for the purpose of manufacturing the spectacle lens (101, 201) according to any one of claims 1 to 9. (ii) Data containing computer-readable instructions for controlling one or more manufacturing machines to produce spectacle lenses (101, 201) according to any one of claims 1 to 9.

11. A method configured to calculate a digital twin of an eyeglass lens (101, 201) via a computer for manufacturing the eyeglass lens (101, 201) using the digital twin, the eyeglass lens (101, 201) comprising a plurality of annular structures (102, 103, 104, 202, 203, 303), each annular structure (102, 103, 104, 202, 203, 303) having a uniform width, one or more of the annular structures (102, 103, 104, 202, 203, 303) each having a varying power, the method characterized in that... - i) For one or more structural features of the one ring structure (102, 103, 104, 202, 203, 303), determine one or more random components; or ii) For one or more structural features of each of the more ring structures (102, 103, 104, 202, 203, 303), determine one or more random components.

12. A computer program comprising instructions that, when executed by a computer, cause the computer to perform the method according to claim 11.

13. A computer-readable storage medium on which a computer program according to claim 12 is stored.

14. A data signal carrying a computer program according to claim 12.

15. The method of claim 11, further configured to manufacture the spectacle lens (101, 201) based on a digital twin of the spectacle lens (101, 201) calculated according to claim 11.

16. A computer configured to perform the method according to claim 11.

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