Spectacle lens design, spectacle lens kit and method of manufacturing a spectacle lens

Abstract

Ophthalmic lens design, ophthalmic lens kit and method of manufacturing an ophthalmic lens. An ophthalmic lens kit comprising an ophthalmic lens comprising a first zone having a first optical power and at least one second zone at least partially surrounding the first zone, the second zone comprising at least one of: focusing structures having a second optical power higher than the first optical power, or diffusing structures that diffuse light passing through the at least one second zone; the kit comprising a prescription comprising an actual wearing position of the ophthalmic lens relative to a wearer's eye and a predetermined object distance model comprising object distances for which the wearer should see clearly for different viewing directions when the ophthalmic lens is worn according to the actual wearing position, the first zone being curved so as to follow the wearer's convergence visual lines when reading when the ophthalmic lens is positioned relative to the wearer's eye according to a given actual wearing position and objects are arranged according to the predetermined object distance model.

Description

[0001] This application is a divisional application of the patent application filed on November 26, 2021, with application number 202180079350.X, international application number PCT / EP2021 / 083245, and entitled "Eyeglass lens design, eyeglass lens kit and method of manufacturing eyeglass lens". Technical Field

[0002] This invention relates to the design of spectacle lenses for myopia control and to a spectacle lens kit. Furthermore, the invention also relates to a computer-aided method for designing spectacle lenses and a method for manufacturing spectacle lenses. Background Technology

[0003] The incidence of myopia (shortsightedness) is rapidly increasing. Myopia significantly increases the risk of retinal detachment (depending on the degree of myopia), posterior polar cataracts, and glaucoma. The optical, visual, and potential pathological effects of myopia, and the resulting inconvenience and costs to individuals and society, necessitate effective strategies to slow the progression of myopia, prevent or delay its onset, or limit its incidence in children and young adults.

[0004] WO 2010 / 075319 A2 also relates to the importance of peripheral retinal images in determining myopic eye growth. This document proposes a treatment method for preventing, improving, or reversing eye length-related disorders, comprising: identifying the patient's eye length-related disorder; and inducing artificial blurring of the patient's peripheral vision to reduce the average spatial frequency of the image input to the retina of the eye, exceeding a threshold spatial frequency to inhibit further elongation of the patient's eye. In particular, the document proposes providing the patient with spectacle lenses having a region comprising multiple elements selected from the group consisting of: (i) protrusions on the surface of the spectacle lens; (ii) depressions on the surface of the spectacle lens; (iii) a first translucent inclusion in the spectacle lens material; and (iv) a first transparent inclusion in the spectacle lens material having a refractive index different from that of the spectacle lens material. Generally, these elements are dot-shaped elements having a refractive index of 1 mm. 2 A non-zero dot density within the range of 0 to 8 points. The spectacle lens has another zone surrounded by a zone comprising the plurality of elements to provide clear vision.

[0005] Improvements to this type of spectacle lens are disclosed in WO 2018 / 026697 A1, WO 2019 / 152438 A1 and WO 2020 / 014613 A1, respectively.

[0006] In particular, WO 2018 / 026697 A1 discloses eyeglasses comprising: a frame and a pair of spectacle lenses mounted in the frame, the spectacle lenses comprising a dot pattern distributed on each spectacle lens, the dot pattern comprising an array of dots spaced apart at a distance of 1 mm or less, each dot having a maximum size of 0.3 mm or less.

[0007] WO 2019 / 152438 A1 discloses an eyeglass lens comprising: a lens material having two opposing curved surfaces; and a scattering region surrounding a clear aperture, wherein the scattering region has a plurality of spaced-apart scattering centers whose size and shape are set to scatter incident light, and the scattering centers are arranged in a pattern including irregular variations in the spacing between adjacent scattering centers and / or irregular variations in the size of the scattering centers.

[0008] For example, WO 2019 / 152438 A1 discloses myopia-reducing eyeglasses consisting of an eyeglass frame and eyeglass lenses mounted in that frame. Typically, the eyeglass lenses can be plano lenses, single-vision lenses (e.g., with positive or negative power), or multifocal lenses (e.g., bifocal or progressive lenses). Each eyeglass lens has a zone of sharpness surrounded by zones that provide reduced contrast. The zone of sharpness is positioned to correspond to the wearer's viewing position on the axis, while the zones providing reduced contrast correspond to the wearer's peripheral vision. The zones providing reduced contrast are composed of an array of dots that reduce the contrast of objects in the wearer's peripheral vision by scattering light passing through these zones to the wearer's eye. Generally, the dots can be provided by forming protrusions and / or recesses on one or both surfaces of the eyeglass lens and / or by forming scattering inclusions in the lens material itself within these zones.

[0009] Hong Kong Polytechnic University and Hoya recently disclosed spectacle lenses with a similar structure in US2017131567 A1, namely spectacle lenses with convex protrusions on their surface. These spectacle lenses are called MSMD (multi-segment myopic defocus) lenses. The corresponding technical concept is called DIMS (DefocusIncorporated Multiple Segments) technology. The corresponding spectacle lenses are disclosed in US2017 / 131567 A1. Embodiments of these spectacle lenses are intended to correct myopia while inhibiting its progression. Such embodiments of the spectacle lens are meniscus concave lenses, with their front surface formed as a convex surface curved towards the object side, and their rear surface formed as a concave surface with a greater curvature than the front surface. Furthermore, the spectacle lens has a first zone at the center of the lens and a second zone surrounding the first zone, the first zone having a first refractive power based on a prescription for myopia correction, and the second zone comprising multiple separate island-shaped regions.

[0010] In the second region, the anterior surface of each island-shaped region is formed as a convex spherical surface facing the object side, and the curvature of this convex spherical surface is greater than that of the anterior surface of the first region. Therefore, the refractive power of these individual island-shaped regions in the second region is 2.00 dpt to 5.00 dpt greater than that in the first region. Correspondingly, the first region focuses the image onto the retina of the eye, while the island-shaped regions in the second region focus the image onto a point in front of the retina.

[0011] Each island-shaped area covers approximately 0.50 to 3.14 mm of the eyeglass lens. 2 They are circular in shape with a diameter of approximately 0.8 to 2.0 mm. These multiple island-shaped regions are arranged roughly evenly near the first region, and the distance between them is almost equal to the radius of the island-shaped region.

[0012] A similar method is used in Essilor's Stellest spectacle lenses, which are described in detail in EP 3553594 A1, EP 3561578 A1, WO 2019 / 166653 A1, WO 2019 / 166654A1, WO2019 / 166655 A1, WO 2019166657 A1, WO 2019 / 166659A1, and WO 2019 / 206569 A1. The spectacle lenses described therein include microlenses / small lenses that are aspherical and have an absolute power between 2.0 dpt and 7.0 dpt at their geometric center, and an absolute power between 1.5 dpt and 6.0 dpt at their periphery. The optical refractive power provided by the aspherical microlenses / small lenses exceeds the refractive power of the clear central area of ​​the spectacle lens by 0.5 dpt or more.

[0013] Furthermore, WO 2020 / 014613A1, assigned to Sightglass Vision Inc., recently disclosed a myopia control spectacle lens that may include one or more defocusing elements; that is, the myopia control spectacle lens may include a clear central area without said defocusing elements. This provides a safe, effective, and non-invasive method for reducing the progression of myopia in adolescents by having children wear glasses with myopia control lenses to treat children with or suspected of having myopia. Exemplarily, the document relates to areas including island lenses.

[0014] Some wearers of spectacle lenses with areas around the central clear zone that provide reduced contrast, as disclosed in WO 2019 / 152438 A1, or with microlens / small lens areas, as disclosed in WO 2019 / 206569 A1, have reported some discomfort during use. In particular, these areas of the lenses may appear dirty.

[0015] WO 2018 / 076057 A1 discloses an eyeglass lens design that includes an area providing a focused image on a fovea, the area being surrounded by an area having a focusing structure for producing myopic defocus. The width of the area providing the focused image is much larger than its height.

[0016] WO 2020 / 113212 A1 is considered the closest prior art, disclosing an eyeglass lens design that includes a region providing a focused image on a fovea, the region being surrounded by a region having a focusing structure for producing myopic defocus or by a diffuse region. The width of the region providing the focused image can be up to five times its height. Summary of the Invention

[0017] Regarding WO 2020 / 113212 A1, the first objective of this invention is to provide an eyeglass lens kit with an eyeglass lens design, and an eyeglass lens design similar to the lens design described above, particularly suitable for reading tasks and preferably also providing high comfort for the wearer of the respective eyeglass lens.

[0018] A second objective of the present invention is to provide a computer-implemented method for designing spectacle lenses, particularly suitable for reading tasks, similar to those described in WO 2020 / 113212A1, and a method (particularly according to this design) for manufacturing spectacle lenses, similar to those described in WO 2020 / 113212A1, particularly suitable for reading tasks, and preferably also providing high comfort for the wearer of the respective spectacle lenses.

[0019] The first objective is achieved by the spectacle lens kit according to the invention and the spectacle lens design according to the invention, and the second objective is achieved by the computer implementation method of the spectacle lens design according to the invention and the method of manufacturing spectacle lenses according to the invention, respectively.

[0020] The following definitions are used within the scope of this description:

[0021] Additional focal length

[0022] In the context of this specification, the term "additional power" applies to the optical power added to an eyeglass lens, where the original optical power of the lens, with the aid of accommodation, provides a focused image on the fovea, while the additional power, when added to the original optical power of the eyeglass lens, provides defocus for myopia. Additional power should not be confused with the additional power in a progressive multifocal lens. On the other hand, the additional power in a progressive multifocal lens defines the difference between the vertex power in the near vision portion of the eyeglass lens and the vertex power in the distance vision portion of the eyeglass lens.

[0023] aperture

[0024] In the context of this specification, the term "aperture" is applied to a region of an eyeglass lens that is surrounded by (i) a region including a diffuse structure (such as a scattering center) or (ii) a region including a structure that provides one or more additional powers.

[0025] Actual wearing position

[0026] The actual wearing position is the position (including orientation) of the spectacle lens relative to the eyes and face during wear (DIN ISO 13666:2019, Section 3.2.36). The actual wearing position is determined by the actual forward tilt angle, the facial curvature of the actual wearing lens rim, and the distance between the apex of the lens. The actual viewing tilt angle is the vertical angle between the horizontal direction within a vertical plane containing the principal direction and the vertical direction perpendicular to the reference line passing through the apex of the grooves of the upper and lower lenses of the frame (DIN ISO 13666:2019, Section 3.2.37), where the principal direction is the direction of the line of sight to an object at infinity, measured with a habitual head and body posture when the eye is looking straight ahead (usually taken as the horizontal direction) (DIN ISO 13666:2019, Section 3.2.25), and the line of sight is the path of light from the point of interest (i.e., fixation point) in object space to the center of the entrance pupil of the eye and its continuation in image space from the center of the exit pupil to the fixation point on the retina (usually the fovea) (DIN ISO 13666:2019, Section 3.2.24). Typical values ​​for the actual viewing tilt angle are in the range of -20 to +30 degrees. The actual facial curvature of the lens is the horizontal angle between the principal direction and the vertical direction of the reference line passing through the apex of the grooves of the nasal and temporal rims of the frame (DIN ISO 13666:2019, Section 3.2.38). Typical values ​​for the actual facial curvature of the lens are between -5 and +30 degrees. Vertex distance is the horizontal distance between the posterior surface of the lens and the apex of the cornea, measured with the eye in the primary gaze position (DIN ISO 13666:2019, Section 3.2.40), where primary gaze position is the position of the eye when looking in the principal direction (DIN ISO 13666:2019, Section 3.2.26). Typical values ​​for vertex distance are between 5 mm and 30 mm. The actual wearing position can be an individual actual wearing position determined for a specific individual, or a general actual wearing position determined for a defined group of wearers.

[0027] Without specifying the actual wearing position, the desired optical power of the spectacle lens design will be unclear. Furthermore, information regarding the actual wearing position is essential for defining the desired optical power and, consequently, the desired technical effect of the spectacle lens design; therefore, such information makes a technical contribution to spectacle lens design.

[0028] Clear area

[0029] In the context of this specification, the term "zone of clarity" applies to areas in spectacle lens design or spectacle lenses that, when viewed through the zone of clarity by a wearer positioned according to a prescribed actual wearing position, provide neither myopic defocus nor diffusion in foveal vision. Furthermore, at least a portion of the zone of clarity allows for a focused image to be achieved in the fovea when necessary with the aid of accommodation. For example, there may be areas in spectacle lens design or spectacle lenses that, when viewed through the lens, provide neither myopic defocus nor diffusion in foveal vision, but instead exhibit residual astigmatic errors that result in a blurred image. Such areas can be considered zones of clarity in the sense used herein. In this example, only a portion of the zone of clarity allows for a focused image to be achieved in the fovea. In other examples of zones of clarity, the area allowing for a focused image to be achieved in the fovea may extend over the entire zone of clarity.

[0030] Data carrier signal

[0031] A data carrier signal is one or more electrical or optical pulses that represent data when propagating over a wired or wireless network.

[0032] By defining the area by at least partially surrounding it.

[0033] In the context of this invention, "defining a region by at least partially surrounding" means that the boundary of a region of a spectacle lens or spectacle lens design is given by its boundary relative to the boundary of another region surrounding that region, provided that the boundary of that region is not given by the lens rim or spectacle lens design.

[0034] diffuser

[0035] In optics, a diffuser (also called a light diffuser or optical diffuser) is an optical element made of any material that diffuses or scatters light in a way that transmits soft light. Scattered light can be readily obtained by reflecting light from a white surface, while more compact diffusers can use translucent materials, including frosted glass, Teflon, holographic materials, milky white glass, and gray glass. Scattering can be achieved through scattering centers, which can be point-shaped, examples of which are disclosed in WO 2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1, and WO 2020 / 014613 A1, respectively. Scattering centers can also be linear. In the following text, the term "diffuse" includes the term "scatter" as a special case.

[0036] Diffuse structure

[0037] The term "diffuse structure" refers to any structure that provides diffuse properties to a corresponding area of ​​an eyeglass lens.

[0038] Optical power

[0039] The term "optical power" is a collective term for the spherical power (which brings a paraxial parallel beam to a single focal point, and is usually referred to in prescriptions as the "spherical" value or abbreviation "sph") and the cylindrical power (which brings a paraxial parallel beam to two separate focal lines perpendicular to each other (DIN ISO 13666:2019, Section 3.10.2), and is usually referred to in prescriptions as the "cylindrical" value or abbreviation "cyl"). "Vertical power" is the reciprocal of the paraxial vertex focal length (DIN ISO 13666:2019, Section 3.10.7). Within the scope of this specification, a beam is considered a paraxial beam if its diameter does not exceed 0.05 mm, particularly 0.01 mm.

[0040] Focus on structure

[0041] In the context of this specification, the term "focusing structure" is used to describe a structure that provides one or more focal points. In particular, such a focusing structure may include microlenses, small lenses, protrusions, etc., as described above with reference to the prior art.

[0042] Central concave

[0043] The term "fovea" is used in this description to refer to the fovea centralis, which is the central depression of the retina containing densely packed photoreceptor cells.

[0044] high

[0045] The term "height" refers to the maximum vertical dimension of a structure, particularly the maximum vertical dimension of a spectacle lens or area designed for spectacle lenses in a predetermined actual wearing position. This is especially true in the case of curved structures, where it refers to the difference between the highest and lowest points of the structure.

[0046] Myopic defocus and peripheral myopic defocus

[0047] The term "myopic defocus" refers to a condition where light focuses a distance in front of the fovea, such that an image cannot be focused on the fovea even with the aid of accommodation. Peripheral myopic defocus occurs outside the fovea and into the visual field.

[0048] Nasal segment

[0049] In this description, the term "nose segment" refers to a segment or area of ​​an eyeglass lens that is closer to the nose ring than the temporal ring of the eyeglass lens, or to a segment or area of ​​an eyeglass lens design that corresponds to the nose segment of an eyeglass lens manufactured according to that design.

[0050] Off-center

[0051] The term "off-center" describes a situation where the geometric center (e.g., aperture) of a spectacle lens or spectacle lens design does not coincide with the defined point of penetration of visual rays passing through the lens or spectacle lens design. The defined visual rays can specifically be the central ray of a beam of light that penetrates the spectacle lens or spectacle lens design when reading while looking directly at a reading target. The term "off-center shift" refers to the size by which the geometric center of the structure deviates from the defined point of penetration of visual rays.

[0052] prescription

[0053] The term "prescription" refers to a summary of refractive powers specified in appropriate values ​​for correcting a diagnosed refractive error. In the case of spherical power, the prescription may include a spherical "sph" value. In the case of astigmatism, the prescription may include a cylindrical "cyl" value and an axis value, and in the case of prism power, the prescription may include a prism value and a base curve value. Furthermore, the prescription may include other values, such as an "add" value in the case of multifocal spectacle lenses, which specifies the difference between the vertex power of the near-vision portion of the spectacle lens and the vertex power of the distance-vision portion. The interpupillary distance (PD) value may also be included in the prescription.

[0054] main direction

[0055] The term "main direction" refers to the direction of the line of sight to an object at infinity, measured with a habitual head and body posture when looking straight ahead with the naked eye (usually taken as the horizontal direction) (DIN ISO 13666:2019, Section 3.2.25).

[0056] Representation of eyeglass lens design

[0057] In the context of this invention, the expression "representation of spectacle lens design" refers to either the implementation of a spectacle lens having the corresponding design features (physical representation of the spectacle lens design) or a digital dataset describing the design features (digital representation of the spectacle lens design). For example, such a dataset can be stored in a computer's memory or on a computer-readable (especially non-transitory) storage medium. Furthermore, the dataset can be retrieved from a data network, such as from the Internet or a local area network (LAN). In particular, a dataset similar to a representation of a gradient spectacle lens design can include a description of the geometry and medium of the gradient spectacle lens. This description can, for example, include a mathematical description of the front surface, the back surface, the arrangement of these surfaces relative to each other (including thickness), the edge definition of the gradient spectacle lens, and the refractive index distribution of the medium used to make the gradient lens. This representation can be in coded or even encrypted form. Here, "medium" refers to the (various) materials or substances used to make the spectacle lens.

[0058] The representation of a gradient eyeglass lens design may additionally or alternatively include computer-readable instructions for controlling one or more manufacturing machines (e.g., casting, grinding, milling, lapping and / or polishing machines) to produce eyeglass lenses with the corresponding design features.

[0059] semi-finished blanks

[0060] The term "semi-finished blank" refers to a piece of optical material having an optically finished surface for making spectacle lenses (DIN ISO 13666:2019, Section 3.8.1).

[0061] Sections of the district

[0062] In this specification, the term "segment" is used in the context of a region of an eyeglass lens or an area of ​​an eyeglass lens design to refer to a portion of that region that represents an area smaller than the total area of ​​that region.

[0063] Eyeglass lenses

[0064] An eyeglass lens is an ophthalmic lens that is worn in front of the eyeball but does not come into contact with it (DIN ISO 13666:2019, Section 3.5.2), wherein an ophthalmic lens is a lens intended for measuring, correcting and / or protecting the eye, or altering its appearance (DIN ISO 13666:2019, Section 3.5.1).

[0065] The term "uncut spectacle lens" (DIN ISO 13666:2019, Section 3.8.8) refers to the finished lens (3.8.7) before edging (3.8.10). Therefore, "cut spectacle lens" refers to the finished lens after edging.

[0066] This invention refers to both "uncut" and "cut spectacle lenses" and their corresponding designs, because the wearing position can be determined based on the corresponding markings, as defined in Section 3.15.25 of the standard (see DIN ISO 13666:2019, Section 3.9, Measurement Purpose). However, the wearing position can also be derived from the rim profile of a "cut spectacle lens".

[0067] Eyeglass lens design

[0068] The term "spectacle lens optical design" is used to describe the calculated / predetermined or defined optical characteristics of a spectacle lens, typically for a specific wearer, taking into account the position / arrangement of the spectacle lens relative to the eye model of the spectacle lens wearer, the position / arrangement of the object model to be viewed by the spectacle lens wearer under specific conditions of use of the spectacle lens, and the physiological visual characteristics model of the spectacle lens wearer.

[0069] In particular, the optical design of spectacle lenses can include the optical power distribution over the effective area of ​​the spectacle lens, which is perceived by a predetermined wearer of the spectacle lens at a predetermined actual wearing position relative to the wearer's (model) eye and a predetermined object distance model. The calculation of the optical power distribution is based on the distance and orientation of the spectacle lens relative to the model eye, the distance and orientation of the spectacle lens relative to the model object, and the physiological parameters of the spectacle wearer, such as the wearer's visual impairments, i.e., refractive errors, accommodative ability, and pupillary distance.

[0070] The term "spectacle lens geometry" refers to the geometry of a spectacle lens that provides the optical properties of the spectacle lens as calculated above for the wearer.

[0071] The term "target optical design for spectacle lenses" refers to a draft optical design for spectacle lenses whose optical characteristics correspond to or are equal to target optical characteristics. The term "actual optical design for spectacle lenses" refers to the calculated optical characteristics of spectacle lenses obtained as a result of an optimization process / calculation aimed at achieving the target optical design as closely as possible. For example, such optimization processes / calculations, particularly for graduated or custom single-vision spectacle lenses, are disclosed in the following article: Werner Konzeption und Entwicklung von [The concept and development of graduated lenses], Deutsche Optiker Zeitung, DOZ 10 / 95, pp. 42-46.

[0072] The optical or geometric design of such spectacle lenses can be stored on a computer-readable (e.g., non-transitory and / or electronic and / or optical) data carrier. Furthermore, spectacle lenses manufactured according to this design can be considered a physical representation of that design.

[0073] The following outlines the basic steps of an example method for designing eyeglass lenses:

[0074] In the first step, individual user data or application data of the eyeglass wearer is recorded. This includes acquiring (physiological) data that can be assigned to the eyeglass wearer and obtaining the usage conditions under which the eyeglass wearer will wear the eyeglasses to be designed.

[0075] Physiological data for eyeglass wearers may include, for example, the wearer's refractive error and accommodative ability, which are determined by refractive measurements and regularly included in the prescription in the form of spherical power, cylindrical power, axis, prism power, base curve, and additional refraction. Furthermore, pupillary distance and pupillary size, for example, are determined under different lighting conditions. The wearer's age affects accommodative ability and pupillary size and can therefore be taken into account. The eye's convergence behavior is obtained from pupillary distances for different viewing directions and object distances.

[0076] These usage conditions include the actual wearing position of the spectacle lenses in front of the eyes (typically relative to the center of eye rotation) and the object distance at which the wearer should be able to see clearly for different viewing directions. For example, the placement of the spectacle lenses in front of the eyes can be determined by recording the corneal apex distance, as well as the anterior and lateral tilt angles. This data is included in an object distance model, to which ray tracing can be applied.

[0077] In subsequent steps, a draft design for the spectacle lens with numerous evaluation points is determined based on the data from these records. This draft design includes the target optical characteristics of the spectacle lens at the respective evaluation points. Target characteristics include, for example, prescription spherical power and permissible astigmatism deviations considering the distribution of added light across the entire spectacle lens, as specified by the lens placement in front of the eye and by a baseline distance model.

[0078] Furthermore, the design of the surface geometry of the front and rear surfaces, as well as the design of the refractive index distribution across the entire spectacle lens, are specified. For example, the front surface can be chosen as a spherical surface, and the rear surface can be chosen as a zoom surface. Both surfaces can initially be chosen as spherical surfaces as well. The choice of surface geometry in this first draft generally determines only the convergence (speed and success) of the optimization method used. It should be assumed, for example, that the front surface retains a spherical shape, while the rear surface is given the shape of a zoom surface.

[0079] In a further step, the path of the principal ray is determined through a large number of evaluation points. It is possible that, in the vicinity of each principal ray, a local wavefront can be established for that corresponding principal ray. According to Werner... Design and Development of Progressive Lenses, Deutsche OptikerZeitung, DOZ 10 / 95, pp. 42-46. The number of evaluation points is typically between 1000 and 1500. EP 2115527 B1 recommends more than 8000 evaluation points. Although the refractive index usually depends on the wavelength, dispersion is generally not considered, and the calculation is performed for the so-called design wavelength. However, it cannot be ruled out that the optimization process will take into account different design wavelengths, as described in EP 2383603 B1.

[0080] In subsequent steps, the aforementioned optical properties of the spectacle lens at the corresponding evaluation point are determined by determining the effect of the spectacle lens on the beam path of the principal ray and, if necessary, by determining the local wavefront near the evaluation point.

[0081] In further steps, the spectacle lens design is evaluated based on the determined optical properties and the individual user data. The back surface geometry and, depending on the situation, the refractive index distribution of the spectacle lens design can be modified by minimizing the objective function, for example...

[0082]

[0083] Where P m W represents the weight at evaluation point m. n The weight of optical property n, T n Let A represent the target value of the optical property n at the corresponding evaluation point m, and A n This represents the actual value of the optical property n at the evaluation point m.

[0084] In other words, the local surface geometry of the rear surface and, depending on the situation, the local refractive index of the spectacle lens in the corresponding visual beam path are modified by evaluating points until the termination criteria are met.

[0085] Around a district

[0086] In the context of this invention, "around a zone" for a spectacle lens or spectacle lens design means that all sides of the zone of the spectacle lens or spectacle lens design that do not reach the lens rim are closed.

[0087] Temporal segment

[0088] In this description, the term "temporal segment" refers to a segment or area of ​​an eyeglass lens that is closer to the temporal rim than the nose rim of the eyeglass lens, or to a segment or area of ​​an eyeglass lens design that corresponds to the temporal segment of an eyeglass lens manufactured according to that design.

[0089] Viewing corner

[0090] The term "viewing angle" refers to the angular distance between two points in the field of view.

[0091] width

[0092] The term "width" refers to the horizontal dimension of a structure, particularly the horizontal dimension of a spectacle lens or a region designed for spectacle lenses in a predetermined actual wearing position. Specifically, in the case of curved structures, it refers to the absolute value of the difference between the point closest to the nose and the point closest to the temple of the structure.

[0093] Area of ​​eyeglass lenses

[0094] In this specification, the term "area" is used in the context of an eyeglass lens or eyeglass lens design to refer to a portion of an eyeglass lens or eyeglass lens design that is smaller than the total area of ​​the eyeglass lens or eyeglass lens design.

[0095] According to a first aspect of the invention, a spectacle lens kit is provided, comprising a spectacle lens design for positioning spectacle lenses relative to a wearer's eye according to a given actual wearing position, and instructions including the spectacle lens design relative to the actual wearing position of the wearer's eye and a predetermined object distance model. The spectacle lens design includes a first region having an optical power that provides a focused image on the fovea when the spectacle lens manufactured according to the spectacle lens design is positioned according to the actual wearing position, and...

[0096] - At least one second region surrounding the first region, wherein the second region includes at least one of the following: (i) focusing structures that provide optical power that produces myopic defocus when the spectacle lens, manufactured according to the spectacle lens design, is positioned according to the actual wearing position, i.e., positioned such that the optical power of the first region provides a focused image on the fovea, or (ii) a diffuse structure, such as a scattering center, which diffuses light passing through the at least one second region.

[0097] The first zone represents a clear area with a first refractive power, preferably based on a prescription for correcting the refractive error of the eye. The second zone represents a diffuser or a zone providing myopic defocus due to focusing structures, each having an optical power obtained by adding a positive additional power to the optical power present in the first zone. The width of the first zone may be at least four times the height of the first zone, and particularly at least six times the height of the first zone.

[0098] In the spectacle lens kit of the present invention, the first zone is curved to follow the wearer's converging gaze during reading. This can be achieved, for example, by comprising a nasal segment (i.e., a segment closer to the nasal ring relative to the temporal ring of the spectacle lens manufactured according to the spectacle lens design), a temporal segment (i.e., a segment closer to the temporal ring relative to the nasal ring of the spectacle lens manufactured according to the spectacle lens design), and a central segment located between the nasal and temporal segments. In this case, the curvature of the first zone can be achieved by a downward displacement of the nasal segment relative to the central segment. This curvature corresponds to the vertical movement and convergence of the eyes when the viewing direction changes vertically while reading text. Therefore, the shape of the first zone of the present invention is well-suited to eye movements during reading.

[0099] By adding or substituting the nasal segment downward relative to the central segment, the temporal segment can also be shifted downward relative to the central segment. This curvature can further correspond to the vertical movement of the eyes when the viewing direction changes vertically while reading text. Therefore, the shape of this advantageously developed first area is well-suited to eye movements during text reading.

[0100] In one option of the above aspects of the invention, the width-to-height ratio of the first region is predetermined to satisfy at least one of the following conditions:

[0101] a) The width of the first zone is at least three times the height of the first zone.

[0102] b) The width of the first zone is at least four times the height of the first zone.

[0103] c) The width of the first zone is at least five times the height of the first zone.

[0104] The wider the first zone is than its height, the more likely the eyes are to move "undisturbed" and the closer the glasses lenses can be worn to the eyes.

[0105] In another option of this aspect of the invention, the width-to-height ratio of the first region is further defined and predetermined to satisfy at least one of the following conditions:

[0106] a) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 3 mm and 5 mm, and wherein the width of that portion is at least three times the uniform height.

[0107] b) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 3 mm and 5 mm, and wherein the width of that portion is at least four times the uniform height.

[0108] c) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 4 mm and 5 mm, and wherein the width of that portion is at least three times the uniform height.

[0109] d) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 4 mm and 5 mm, and wherein the width of said portion is at least four times the uniform height.

[0110] If the width of the first zone is at least four times greater than its height, then even with a relatively small height in the first zone, the wearer can clearly see multiple letters in a line when reading with eyeglasses designed according to the present invention. In particular, if the width is at least six times the height, even longer words can be seen clearly overall. Using the eyeglasses lens design of the present invention, the wearer of eyeglasses based on this design is less or no longer disturbed by areas of the lens that appear dirty. Therefore, compared to myopia-reducing eyeglasses according to the prior art, the discomfort of wearing myopia-reducing eyeglasses based on the eyeglasses lens design of the present invention is reduced while maintaining myopia progression control.

[0111] In an advantageous development of the spectacle lens design of the present invention, the height of the first zone is selected such that when the spectacle lens manufactured according to the spectacle lens design of the present invention is positioned according to the actual wearing position, i.e., positioned such that the optical power of the first zone provides a focused image on the fovea, it covers a vertical viewing angle of 0.8 to 1.5 degrees, preferably 1.0 to 1.2 degrees, particularly 1.0 or 1.2 degrees. Since a typical letter of size 12pt. corresponds approximately to a vertical viewing angle of 1.0 degrees, this development allows the wearer of spectacle lenses based on the spectacle lens design of the present invention to clearly see multiple letters in a line of text, while simultaneously maintaining a large diffuse area or a large area providing myopia defocus for myopia progression control.

[0112] Therefore, the height of the first zone can be in the range of approximately 3mm to 8mm, while the width of the first zone can be in the range of approximately 12mm up to the entire size of the lens in the horizontal direction.

[0113] In the spectacle lens design of the spectacle lens kit of the present invention, the width of the first zone can be matched with the width of the spectacle lens design. In this case, the second zone restricts the first zone upwards and downwards, but does not restrict the first zone towards the nose or temples. Therefore, the first zone is only partially surrounded by the second zone, and the first zone divides the second zone into two distinct sub-zones. When the width of the first zone matches the width of the spectacle lens design, maximum reading comfort can be provided for the wearer of the spectacle lens manufactured according to the lens design of the present invention for each given height of the first zone.

[0114] The first zone of the spectacle lens design of the spectacle lens kit of the present invention can be offset from the center relative to the point of penetration of the central ray of the light beam that passes through the spectacle lens design when reading with direct vision of the reading target. If the spectacle lens design is for the right or left eye, it is shifted towards the temporal region; if the spectacle lens design is for the corresponding other eye, it is shifted towards the nose. If the first zone is shifted towards the temporal region when the spectacle lens design is for the right eye, the spectacle lens is adapted to eye movements during left-to-right reading. On the other hand, if the first zone is shifted towards the temporal region when the spectacle lens design is for the left eye, the spectacle lens is adapted to a right-to-left reading direction. This spectacle lens design, adapted to eye movements during reading, makes reading more comfortable.

[0115] Off-center displacement (e.g., to the right for a left-to-right reading task) can exceed 0.5 cm, preferably 0.6 cm, more preferably 0.7 cm, or even exceed 0.8 cm. However, off-center displacement preferably does not exceed 1.5 cm. Preferably, off-center displacement can be between 0.5 and 1.2 cm.

[0116] According to a first aspect of the invention, a dataset comprising at least one of the following types of data is also provided: (i) a digital representation of an eyeglass lens design according to the first aspect of the invention, and (ii) data comprising computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses according to the eyeglass lens design according to the first aspect of the invention. This dataset can be used in a computer numerically controlled manufacturing process to manufacture eyeglass lenses based on the eyeglass lens design.

[0117] According to a first aspect of the invention, a data carrier signal carrying at least one of the following types of data is also provided: (i) a digital representation of an eyeglass lens design according to an eyeglass lens kit according to the first aspect of the invention, and (ii) data containing computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses according to the eyeglass lens design according to the first aspect of the invention. Such a data carrier signal can be provided, for example, via a cloud server through a network, and can be used in a computer-controlled manufacturing process to manufacture eyeglass lenses based on the eyeglass lens design.

[0118] According to a second aspect of the invention, a computer-implemented method for designing spectacle lenses that are positioned relative to the wearer's eyes based on a given actual wearing position is provided, and a method for manufacturing the spectacle lenses is also provided. These methods include the following steps:

[0119] - Provides a digital representation of the power of spectacle lenses, or spectacle lenses with optical power, which provides a focused image on the fovea when the lenses are positioned according to the actual wearing position, and

[0120] - In the digital representation of the spectacle lens, a region is designed having at least one of the following: (i) focusing structures that provide optical power to produce myopic defocus when the spectacle lens is positioned according to the actual wearing position, or (ii) diffuse structures, such as scattering centers, that cause light to diffuse; or at least one of the following is formed in the region of the spectacle lens: (i) focusing structures that provide optical power to produce myopic defocus when the spectacle lens is positioned according to the actual wearing position, or (ii) diffuse structures, such as scattering centers, that cause light to diffuse, wherein the region is formed as a second region that at least partially surrounds the first region having optical power that provides a focused image on the fovea when the spectacle lens is positioned according to the actual wearing position.

[0121] According to the invention, the second region in the digital representation of the spectacle lens is designed, or formed in the spectacle lens, such that the first region defined by the second region, which at least partially surrounds it, is curved to follow the wearer's converging gaze during reading. This can be achieved by designing or forming the second region such that the first region includes a nasal segment (i.e., a segment closer to the nasal ring relative to the temporal ring of the spectacle lens to be manufactured), a temporal segment (i.e., a segment closer to the temporal ring relative to the nasal ring of the spectacle lens to be manufactured), and a central segment located between the nasal segment and the temporal segment. In this case, the curvature of the first region can be achieved by a downward displacement of the nasal segment and / or the temporal segment relative to the central segment. This curvature corresponds to the vertical movement of the eyes when the viewing direction changes vertically while reading text. Therefore, the shape of the first region of the invention is well-suited to eye movements when reading text.

[0122] In the spectacle lens of the present invention, designed or manufactured according to the method of the invention, a first zone represents a clear area with a first refractive power, which is preferably based on a prescription for correcting refractive errors of the eye. A second zone represents a diffuser or a zone providing myopic defocus due to focusing structures, each having an optical power obtained by adding a positive additional power to the optical power present in the first zone. If, in the spectacle lens designed or manufactured according to the method of the invention, the width of the first zone is at least four times greater than the height of the first zone, even with a relatively small height in the first zone, the wearer can clearly see multiple letters in a line when reading with the spectacle lens. In particular, if the width is at least six times the height, even longer words can be seen clearly overall. Using spectacle lenses designed in this way, the wearer is less or no longer disturbed by areas of the spectacle lens that appear dirty. Therefore, compared to myopia-reducing spectacle lenses according to the prior art, the discomfort of wearing myopia-reducing spectacle lenses manufactured according to the method of the invention is reduced while maintaining myopia progression control.

[0123] The second zone can be designed or formed such that the first zone, defined by the second zone that at least partially surrounds it, has a size such that it covers a vertical viewing angle of 0.8 to 1.5 degrees when the spectacle lens is positioned according to the actual wearing position. In particular, the second zone can be designed or formed such that the first zone, defined by the second zone that at least partially surrounds it, has a size such that it covers a vertical viewing angle of 1.0 to 1.2 degrees, for example, 1.0 or 1.2 degrees. Since a typical letter of size 12pt. corresponds approximately to a vertical viewing angle of 1.0 degrees, this first zone allows the wearer of spectacle lenses manufactured according to the method of the invention to clearly see multiple letters in a line of text, while simultaneously maintaining a large diffuse area or a large area providing myopia defocus for myopia progression control.

[0124] In an advantageous development of the method of the invention, the second zone is designed or formed such that the first zone, defined by the at least partially surrounding second zone, has a width matching the width of the spectacle lens. In this case, the second zone restricts the first zone upwards and downwards, but not towards the nose or temples. Thus, the first zone is only partially surrounded by the second zone, and the first zone divides the second zone into two distinct sub-zones. When the width of the first zone matches the width of the spectacle lens, maximum reading comfort can be provided for the wearer of the spectacle lens for each given height of the first zone. In this development, the second zone surrounding the first zone has multiple distinct sub-zones.

[0125] In a further advantageous development of the method of the invention, the second region is designed or formed such that the geometric center of the first region, defined by the second region which at least partially surrounds it, is at least vertically offset from the center of the light beam penetrating the spectacle lens when reading while looking directly at the reading target. If the spectacle lens is for the right or left eye, the first region is shifted towards the temporal region, and if the spectacle lens is for the corresponding other eye, the first region is shifted towards the nose. If the first region is shifted towards the temporal region when the spectacle lens is for the right eye, the spectacle lens is adapted to eye movements during left-to-right reading. On the other hand, if the first region is shifted towards the temporal region when the spectacle lens is designed for the left eye, the spectacle lens is adapted to a right-to-left reading direction. Spectacle lens designs adapted to eye movements during reading in this way make reading more comfortable.

[0126] According to a third aspect of the present invention, a spectacle lens design for spectacle lenses is provided, comprising:

[0127] - The first zone provides a single optical power.

[0128] - At least one second region at least partially surrounds the first region, wherein the second region comprises at least one of: (i) focusing structures that provide an optical power greater than that of the first region, or (ii) diffuser structures that diffuse light passing through the at least one second region. The optical power of the focusing structure may be at least 0.5 dpt higher than that of the first region.

[0129] According to a third aspect of the invention, the first region includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, wherein at least one of the nasal segment and the temporal segment is displaced downward relative to the central segment. In particular, both the nasal segment and the temporal segment can be displaced downward relative to the central segment. This displacement provides the curvature of the first region, which corresponds to the vertical movement and convergence of the eyes when the viewing direction changes vertically while reading text. Therefore, the shape of the first region of the invention is well-suited to eye movements when reading text. This effect is particularly pronounced when both the nasal segment and the temporal segment are displaced downward relative to the central segment.

[0130] In one option of this third aspect of the invention, the width-to-height ratio of the first region is predetermined to satisfy at least one of the following conditions:

[0131] a) The width of the first zone is at least three times the height of the first zone.

[0132] b) The width of the first zone is at least four times the height of the first zone.

[0133] c) The width of the first zone is at least five times the height of the first zone.

[0134] The wider the first zone is than its height, the more likely the eyes are to move "undisturbed" and the closer the glasses lenses can be worn to the eyes.

[0135] In another option of this third aspect of the invention, the width-to-height ratio of the first region is further defined and predetermined to satisfy at least one of the following conditions:

[0136] a) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 3 mm and 5 mm, and wherein the width of that portion is at least three times the uniform height.

[0137] b) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 3 mm and 5 mm, and wherein the width of that portion is at least four times the uniform height.

[0138] c) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 4 mm and 5 mm, and wherein the width of that portion is at least three times the uniform height.

[0139] d) The height of the first zone is uniform along at least a portion of the width of the first zone, wherein the uniform height of the first zone within said portion is a value between 4 mm and 5 mm, and wherein the width of said portion is at least four times the uniform height.

[0140] The width of the first zone can be, for example, at least four times the height of the first zone, and particularly at least six times the height of the first zone. Furthermore, the width of the first zone can be matched to the width of the spectacle lens design. If, in a spectacle lens designed or manufactured according to the third aspect of the method of the invention, the width of the first zone is at least four times greater than the height of the first zone, then even with a relatively small height in the first zone, the wearer can clearly see multiple letters in a line when reading with this spectacle lens. In particular, if the width is at least six times the height or even matches the width of the spectacle lens design, longer words can also be seen clearly overall. Using spectacle lenses designed in this way, the wearer is less or no longer bothered by areas of the spectacle lens that appear dirty. Therefore, compared to myopia-reducing spectacle lenses according to the prior art, the discomfort of wearing myopia-reducing spectacle lenses manufactured according to the method of the invention is reduced while maintaining myopia progression control.

[0141] According to a third aspect of the invention, a dataset comprising at least one of the following types of data is also provided: (i) a digital representation of an eyeglass lens design according to the third aspect of the invention, and (ii) data comprising computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses according to the eyeglass lens design according to the third aspect of the invention. This dataset can be used in a computer numerically controlled manufacturing process to manufacture eyeglass lenses based on the eyeglass lens design.

[0142] According to a third aspect of the invention, a data carrier signal carrying at least one of the following types of data is also provided: (i) a digital representation of an eyeglass lens design according to the third aspect of the invention, and (ii) data containing computer-readable instructions for controlling one or more manufacturing machines to produce eyeglass lenses according to the eyeglass lens design according to the third aspect of the invention. This data carrier signal can be provided, for example, via a cloud server through a network, and can be used in a computer-controlled manufacturing process to manufacture eyeglass lenses based on the eyeglass lens design.

[0143] According to a fourth aspect of the present invention, a computer implementation method for designing spectacle lenses and a method for manufacturing spectacle lenses are provided.

[0144] The computer implementation method for designing the spectacle lens includes the following steps: providing a digital representation of a spectacle lens having a single optical power; and designing a region in the digital representation of the spectacle lens having at least one of: (i) focusing structures that provide an optical power higher than that of a first region, or (ii) diffuser structures that diffuse light, wherein the region is designed to form a second region that at least partially surrounds the first region, the first region having the optical power of the provided spectacle lens digital representation. The second region is designed such that the first region includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, and at least one of the nasal segment and the temporal segment is downwardly shifted relative to the central segment. In particular, the second region may be designed such that both the nasal segment and the temporal segment are downwardly shifted relative to the central segment.

[0145] The method of manufacturing spectacle lenses includes the following steps: a spectacle lens having a single optical power, and forming in a region of the spectacle lens at least one of the following: (i) focusing structures providing an optical power higher than that of a first region, or (ii) diffuser structures causing light to diffuse, wherein the region is formed as a second region that at least partially surrounds the first region, the first region having the provided optical power of the spectacle lens. The second region is formed such that the first region includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, wherein at least one of the nasal segment and the temporal segment is displaced downward relative to the central segment. In particular, the second region may be formed such that both the nasal segment and the temporal segment are displaced downward relative to the central segment.

[0146] The displacement of the nasal segment and / or temporal segment provides the curvature of the first zone, which corresponds to the vertical movement and convergence of the eyes when the viewing direction changes vertically while reading text. Therefore, the shape of the first zone of the present invention is well-suited to eye movements during text reading. This effect is particularly pronounced when both the nasal and temporal segments are displaced downwards relative to the central segment.

[0147] In the computer-implemented method for designing and manufacturing spectacle lenses, the second zone can be designed or formed such that the first zone, defined by the at least partially surrounding second zone, has a size such that it covers a vertical viewing angle of 0.8 to 1.5 degrees when the designed spectacle lens is positioned according to the actual wearing position. Specifically, the second zone can be designed or formed such that the first zone, defined by the at least partially surrounding second zone, has a size such that it covers a vertical viewing angle of 1.0 to 1.2 degrees, for example, 1.0 or 1.2 degrees. Since a typical letter of size 12pt. corresponds approximately to a vertical viewing angle of 1.0 degrees, this first zone allows the wearer to clearly see multiple letters in a line of text, while simultaneously maintaining a large diffuse area or a large area providing myopia defocus for myopia progression control functions.

[0148] Furthermore, in the computer-based method for designing and manufacturing spectacle lenses, the second region can be designed or formed such that the width of the first region matches the width of the spectacle lens design. When the width of the first region matches the width of the spectacle lens, maximum reading comfort can be provided for the wearer of the spectacle lens for each given height of the first region.

[0149] Furthermore, in the computer implementation method for designing and manufacturing spectacle lenses, the second region can be designed such that the geometric center of the first region is at least vertically offset from the center of the light beam penetrating the spectacle lens when reading directly onto a reading target. If the designed spectacle lens is for the right or left eye, it is shifted towards the temporal region; if the designed spectacle lens is for the corresponding other eye, it is shifted towards the nose. If the first region is shifted towards the temporal region when the spectacle lens is for the right eye, the spectacle lens is adapted to eye movements during left-to-right reading. On the other hand, if the spectacle lens design is for the left eye and the first region is shifted towards the temporal region, the spectacle lens is adapted to a right-to-left reading direction. Spectacle lens designs adapted to eye movements during reading in this way make reading more comfortable.

[0150] Further developments in the spectacle lens design according to the third aspect can be the same as further developments in the spectacle lens design according to the first aspect of the invention. Attached Figure Description

[0151] Further features, characteristics, and advantages of the invention will become clear from the following description of exemplary embodiments of the invention taken in conjunction with the accompanying drawings.

[0152] Figure 1 An exemplary embodiment of eyeglasses is shown, wherein the width of the first section of the eyeglasses matches the width of the eyeglass lens.

[0153] Figure 2 An exemplary embodiment of eyeglasses is shown, wherein the first region of the eyeglasses is elliptical and its width is at least four times the height of the first region.

[0154] Figure 3 Another exemplary embodiment of the glasses is shown, wherein the first zone of the glasses is elliptical and its width is at least four times the height of the first zone.

[0155] Figure 4 Another exemplary embodiment of eyeglasses is shown, wherein the width of the first zone of the eyeglasses matches the width of the eyeglass lens.

[0156] Figure 5 Another exemplary embodiment of eyeglasses is shown, wherein the width of the first zone of the eyeglasses matches the width of the eyeglass lens.

[0157] Figure 6 Another exemplary embodiment of eyeglasses is shown, wherein the width of the first zone of the eyeglasses matches the width of the eyeglass lens.

[0158] Figure 7 A flowchart illustrating an exemplary embodiment of a method for manufacturing eyeglass lenses is shown. Detailed Implementation

[0159] Exemplary embodiments of spectacle lenses based on the lens design of this invention will be referred to. Figures 1 to 6 The description is as follows. Each of the spectacle lenses in these exemplary embodiments includes a first zone and a second zone at least partially surrounding the first zone. The first zone is curved to follow the wearer's converging gaze during reading.

[0160] In all exemplary embodiments, the width of the first region is at least four times the height of the first region, while in some exemplary embodiments, the first region extends over the entire width of the spectacle lens, i.e., from the temporal rim to the nasal rim. In those exemplary embodiments where the first region extends over the entire width of the spectacle lens, the second region only partially surrounds the first region and is divided into two separate sub-regions by the first region. Exemplary embodiments also include spectacle lenses where the first region is off-center, and spectacle lenses where the first region is curved. However, the location and geometry of the first region described in the exemplary embodiments are not exhaustive. Those skilled in the art will envision other possible locations and geometries for such first regions where the width is at least four times the height of the corresponding first region.

[0161] A first exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 1The figure, in a plan view, shows eyeglasses 1 with eyeglass lenses 2 manufactured according to a first exemplary embodiment of the eyeglass lens design of the present invention. Eyeglass lens 2 can be considered representative of the eyeglass lens design of the first exemplary embodiment.

[0162] In this exemplary embodiment, the eyeglasses 1 include two single-vision lenses 2, one for the wearer's right eye and one for the left eye. These two lenses 2 are mounted in an eyeglass frame 3 and separated by a nose bridge 7 of the frame 3. For nearsighted wearers, the lenses 2 are designed to provide full correction according to the wearer's prescription. Therefore, the lenses 2 are negative lenses.

[0163] Each spectacle lens 2 includes a first zone 4, which is analogous to the zone of sharpness used for viewing objects. In other words, the first zone 4 provides a sharp image of the fovea of ​​the wearer's retina.

[0164] This first region 4 extends over the entire width of the spectacle lens 2, that is, its entire dimension d in the vertical direction. v The first region 4 extends upwards and is surrounded vertically by a second region, which in this exemplary embodiment comprises two sub-regions 5a and 5b, separated from each other by the first region 4. Sub-regions 5a and 5b provide scattering optical properties. Therefore, the second region of this exemplary embodiment, i.e., its sub-regions 5a and 5b, forms a diffuse region with two diffuse sub-regions. The sub-regions 5a and 5b of the second region are striped and include a plurality of point-shaped scattering centers 6. Scattering in physics is generally understood to refer to the deflection of an object through interaction with another local object, i.e., a scattering center. In this case, scattering should refer to the non-directional arbitrary deflection of incident light, without producing one or more predetermined focal points, but providing the wearer with a reduction in contrast compared to viewing through the clear first region 4.

[0165] In this exemplary embodiment, the height of the first zone 4 is given by the vertical distance between the sub-zones 5a and 5b of the second zone, and is selected such that when the spectacle lens 2 is worn according to a specific actual wearing position, the first zone allows a vertical viewing angle of approximately 1.2 degrees. This viewing angle allows for clear viewing of 12pt. letters. Since the first zone 4 extends across the entire width of the spectacle lens 2, clear vision of the letters in a line is not obstructed by the second zone, which improves reading comfort compared to prior art spectacle lenses with circular clear vision zones, as described, for example, in WO2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1, and WO 2020 / 014613 A1.

[0166] Zone 4 comprises: a nasal segment 4a, i.e., the segment facing the nasal lens ring 8 of the spectacle lens; a temporal segment 4b, i.e., the segment facing the temporal lens ring 9 of the spectacle lens; and a central segment 4c located between the nasal segment 4a and the temporal segment 4b. Zone 4 is curved such that the nasal segment 4a and the temporal segment 4b are displaced downward relative to the central segment 4c. When the wearer reads at close range with the book held in front of him at a reading distance from his retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of Zone 4 conforms to the wearer's line of sight. By using the curved Zone 4, even though the height of Zone 4 only allows for a vertical viewing angle that just allows for reading letters of 12pt size, the reduced contrast of a portion of the currently read line can be avoided during eye movements while reading a line due to diffusion caused by Zone 5a.

[0167] A second exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 2 The figure illustrates, in a plan view, eyeglasses 11 with spectacle lenses 12 manufactured according to a second exemplary embodiment of the spectacle lens design of the present invention. Spectacle lens 12 can be considered representative of the spectacle lens design of the second exemplary embodiment.

[0168] In this exemplary embodiment, the eyeglasses 11 include two single-vision lenses 12, one for the wearer's right eye and one for the left eye. These two lenses 12 are mounted in an eyeglass frame 13 and separated by a bridge 17 of the frame 13. For nearsighted wearers, the lenses 12 are designed to provide insufficient correction compared to the wearer's prescription. Therefore, the lenses 12 can be zero or negative lenses.

[0169] Each spectacle lens 12 includes a first region 14, which is analogous to a clear region for viewing objects. In other words, the first region 14 provides a clear image of the fovea of ​​the wearer's retina. This first region is surrounded by a second region 15, which, like the sub-regions 5a, 5b of the second region in the first exemplary embodiment, provides scattering optical properties and can therefore be considered a diffuse region. The second region 15 includes a plurality of point-shaped scattering centers 16 and completely surrounds the first region 14, such that the first region 14 can be considered as an aperture in the second region 15.

[0170] The second region 15 defines the shape and extent of the first region 14 by surrounding it. In this exemplary embodiment, the first region 14 has an elliptical shape, the width of which is the dimension d in the horizontal direction. h Exceeding the height, i.e., the vertical dimension d vFour times. The height of the first zone 14 is chosen to allow a vertical viewing angle of approximately 1.2 degrees, meaning that when the spectacle lens 12 is worn according to the specific actual wearing position, it allows for a clear view of letters of size 12pt. The width of the first zone provides a clear line of sight with a horizontal viewing angle of approximately 4.8 degrees, which allows for clear viewing of medium-length words through the first zone 14 without eye movement, thus improving reading comfort compared to prior art spectacle lenses with circular clear zones described in WO 2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1 and WO 2020 / 014613 A1, respectively.

[0171] Zone 14 comprises: a nasal segment 14a, i.e., a segment facing the nasal lens ring 18 of the spectacle lens; a temporal segment 14b, i.e., a segment facing the temporal lens ring 19 of the spectacle lens; and a central segment 14c located between the nasal segment 14a and the temporal segment 14b. Zone 14 is curved such that the nasal segment 14a and the temporal segment 14b are displaced downward relative to the central segment 14c. When the wearer reads at close range with the book held in front of him at a reading distance from his retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of Zone 14 conforms to the wearer's line of sight. By using the curved Zone 14, even though the height of Zone 14 only allows for a vertical viewing angle that just allows reading letters of 12pt size, the reduced contrast of a portion of the currently read line can be avoided during eye movements while reading a line due to diffusion caused by Zone 15a.

[0172] A third exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 3 The figure illustrates, in a plan view, eyeglasses 21 with spectacle lenses 22 manufactured according to a third exemplary embodiment of the spectacle lens design of the present invention. Spectacle lens 22 can be considered representative of the spectacle lens design of the third exemplary embodiment.

[0173] In this exemplary embodiment, the eyeglasses 21 include two single-vision lenses 22, one for the wearer's right eye and one for the left eye. These two lenses 22 are mounted in an eyeglass frame 23 and separated by a bridge 27 of the frame 23. For nearsighted wearers, the lenses 22 are designed to provide full correction according to the wearer's prescription. Therefore, the lenses 22 are negative lenses.

[0174] Each spectacle lens 22 includes a first zone 24, which is analogous to the zone of sharpness for viewing objects. In other words, the first zone 24 provides a sharp image of the fovea of ​​the wearer's eye. This first zone is completely surrounded by a second zone 25, which provides peripheral myopic defocus for a person looking straight ahead through the first zone 24. Peripheral myopic defocus is achieved by using a plurality of microlenses 26, each microlens adding an additional power to the optical power of the spectacle lens 22. The additional power is selected such that when the spectacle lens 22 is used according to its specific actual wearing position, a sharp image is formed in front of the wearer's fovea.

[0175] In this exemplary embodiment, the microlenses 26 are distributed along two imaginary concentric elliptical lines. Those microlenses 26 distributed along the elliptical lines with the smallest dimensions surround a clearly defined aperture with an elliptical shape forming the first region 24. Therefore, the first region, and particularly its shape and size, are defined by the second region. Note that in Figure 3 In this context, these elliptical lines are merely to illustrate the distribution of microlenses 26 along the elliptical lines, and the elliptical lines do not actually exist in the spectacle lens 22.

[0176] In this exemplary embodiment, the width of the elliptical first region 24, i.e., the dimension d in the horizontal direction, is... h Exceeding its height, i.e., the vertical dimension d v Four times. The height of the first zone 24 is chosen to allow a vertical viewing angle of approximately 1.0 degree. This viewing angle still allows for clear viewing of letters up to 12pt. when the spectacle lens 2 is worn according to the specific actual wearing position. The width of the first zone provides a clear line of sight with a horizontal viewing angle of approximately 4 degrees, which allows for clear viewing of at least short words through the first zone 24 without eye movement, thus improving reading comfort compared to prior art spectacle lenses with circular clear zones described in WO 2010 / 075319 A2, WO 2018 / 026697A1, WO 2019 / 152438 A1 and WO 2020 / 014613 A1, respectively.

[0177] Furthermore, in this exemplary embodiment, the first and second zones 24, 25 are shifted toward the temporal rim of the right spectacle lens (i.e., the lens for the right eye) and toward the nasal rim of the left spectacle lens 22. Note that these figures show spectacle lenses through which the wearer views the text. Therefore, in all figures, the lens for the right eye is depicted on the right, and the lens for the left eye is depicted on the left. By shifting the first zone 24 as described above, the first zone 24 is shifted in the reading direction to allow reading text from left to right. If the spectacle lenses are designed for a country where the reading direction is from right to left, the first and second zones 24, 25 will be shifted toward the nasal rim of the right spectacle lens 22 and toward the temporal rim of the left spectacle lens 22. This shifting of the first and second zones 24, 25 improves reading comfort. Please note that although the first and second zones have been shifted in this exemplary embodiment, it is also possible to shift only the first zone, especially in cases where the second zone extends extensively or over the entire spectacle lens outside the first zone.

[0178] Zone 24 comprises: a nasal segment 24a, i.e., a segment facing the nasal lens ring 28 of the spectacle lens; a temporal segment 24b, i.e., a segment facing the temporal lens ring 29 of the spectacle lens; and a central segment 24c located between the nasal segment 24a and the temporal segment 24b. Zone 24 is curved such that the nasal segment 24a and the temporal segment 24b are displaced downward relative to the central segment 24c. When the wearer reads at close range with the book held in front of him at a reading distance from his retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of Zone 24 conforms to the wearer's line of sight. By using the curved Zone 24, even though the height of Zone 24 only allows for a vertical viewing angle that just allows reading letters of 12pt size, the reduced contrast of a portion of the currently read line can be avoided during eye movements while reading a line due to diffusion caused by Zone 25a.

[0179] A fourth exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 4 The figure illustrates, in a plan view, eyeglasses 31 with spectacle lenses 32 manufactured according to a fourth exemplary embodiment of the spectacle lens design of the present invention. Spectacle lens 32 can be considered representative of the spectacle lens design of the fourth exemplary embodiment.

[0180] In this exemplary embodiment, the eyeglasses 31 include two single-vision lenses 32, one for the wearer's right eye and one for the left eye. These two lenses 32 are mounted in an eyeglass frame 33 and separated by a bridge 37 of the frame 33. For nearsighted wearers, the lenses 32 are designed to provide insufficient correction compared to the wearer's prescription. However, the lenses 32 are negative lenses.

[0181] This exemplary embodiment is similar to the first exemplary embodiment. Each spectacle lens 32 includes a first region 34, which is analogous to a clear region for viewing objects. In other words, the first region 34 provides a clear image of the fovea of ​​the wearer's retina. As with the first exemplary embodiment, the first region 34 of this exemplary embodiment extends over the entire width of the spectacle lens 32, that is, its entire dimension d in the vertical direction. v The first region 34 extends upwards and is surrounded vertically by a second region, which consists of two sub-regions 35a and 35b separated from each other by the first region 34. Sub-regions 35a and 35b provide scattering optical properties. Therefore, the second region of this exemplary embodiment, i.e., its sub-regions 5a and 5b, forms a diffuse region with two diffuse sub-regions. Similar to the first exemplary embodiment, the sub-regions 35a and 35b of the second region are striped. However, unlike the first exemplary embodiment, the sub-regions 35a and 35b do not include a plurality of point-shaped scattering centers, but instead include a plurality of line-shaped scattering centers 36.

[0182] In this exemplary embodiment, the height of the first zone 34 is given by the vertical distance between the sub-zones 35a and 35b of the second zone, and is selected such that when the spectacle lens 2 is worn according to a specific actual wearing position, the first zone allows a vertical viewing angle of approximately 1.2 degrees. This viewing angle allows for clear viewing of 12pt. letters. Since the first zone 14 extends over the entire width of the spectacle lens 2, clear vision of the letters in a line is not obstructed by the second zone, which improves reading comfort compared to prior art spectacle lenses with circular clear vision zones, as described, for example, in WO2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1, and WO 2020 / 014613 A1.

[0183] Zone 34 comprises: a nasal segment 34a, i.e., a segment facing the nasal lens ring 38 of the spectacle lens; a temporal segment 34b, i.e., a segment facing the temporal lens ring 39 of the spectacle lens; and a central segment 34c located between the nasal segment 34a and the temporal segment 34b. Zone 34 is curved such that the nasal segment 34a and the temporal segment 34b are displaced downward relative to the central segment 34c. When the wearer reads at close range with the book held in front of him at a reading distance from his retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of Zone 34 conforms to the wearer's line of sight. By using the curved Zone 34, even though the height of Zone 34 only allows for a vertical viewing angle that just allows reading letters of 12pt size, the reduced contrast of a portion of the currently read line can be avoided during eye movements while reading a line due to diffusion caused by Zone 35a.

[0184] A fifth exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 5 The figure illustrates, in a plan view, eyeglasses 41 with spectacle lenses 42 manufactured according to a fifth exemplary embodiment of the spectacle lens design of the present invention. Spectacle lens 42 can be considered representative of the spectacle lens design of the fifth exemplary embodiment.

[0185] In this exemplary embodiment, the eyeglasses 41 include two single-vision lenses 42, one for the wearer's right eye and one for the left eye. These two lenses 42 are mounted in an eyeglass frame 43 and separated by a bridge 47 of the frame 43. For a nearsighted wearer, the lenses 42 are designed to provide full correction for near vision according to the wearer's prescription. In this case, due to the wearer's non-ideal corneal shape, the lenses 42 may include some astigmatism correction.

[0186] Each spectacle lens 42 includes a first zone 44, which is analogous to the zone of sharpness for viewing objects. In other words, the first zone 44 provides a sharp image of the fovea of ​​the wearer's eye's retina. This first zone 44 extends over the entire width of the spectacle lens 42, that is, its entire dimension d in the vertical direction. v The first zone 44 extends upwards and is surrounded vertically by a second zone, which in this exemplary embodiment comprises two sub-zones 45a and 45b, separated from each other by the first zone 44. Sub-zones 45a and 45b provide peripheral myopic defocus for a person looking directly ahead through the first zone 44. Peripheral myopic defocus is achieved by using a plurality of linear cylindrical lenses 46, each adding an additional power to the optical power of the spectacle lens 42. The additional power is selected such that when the spectacle lens 42 is used according to its intended actual wearing position, a clear image is formed in front of the wearer's fovea.

[0187] In this exemplary embodiment, the height of the first zone 44 is given by the vertical distance between the sub-zones 45a and 45b of the second zone, and is selected such that when the spectacle lens 42 is worn according to a specific actual wearing position, the first zone allows a vertical viewing angle of approximately 1.2 degrees. This viewing angle allows for clear viewing of 12pt. letters. Because the first zone 44 extends over the entire width of the spectacle lens 42, clear vision of the letters in a line is not obstructed by the second zone, which improves reading comfort compared to prior art spectacle lenses with circular clear vision zones, as described, for example, in WO 2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1, and WO 2020 / 014613 A1.

[0188] Zone 44 comprises: a nasal segment 44a, i.e., a segment facing the nasal lens ring 48 of the spectacle lens; a temporal segment 44b, i.e., a segment facing the temporal lens ring 49 of the spectacle lens; and a central segment 44c located between the nasal segment 44a and the temporal segment 44b. Zone 44 is curved such that the nasal segment 44a and the temporal segment 44b are displaced downward relative to the central segment 44c. When the wearer reads at close range with the book held in front of him at a reading distance from his retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of Zone 44 conforms to the wearer's line of sight. By using the curved Zone 44, even though the height of Zone 44 only allows for a vertical viewing angle that just allows for reading letters of 12pt size, the reduced contrast of a portion of the currently read line can be avoided during eye movements while reading a line due to diffusion caused by Zone 45a.

[0189] A sixth exemplary embodiment of the spectacle lens design of the present invention will be referred to. Figure 6 The figure illustrates, in a plan view, eyeglasses 51 with spectacle lenses 52 manufactured according to a sixth exemplary embodiment of the spectacle lens design of the present invention. Spectacle lens 52 can be considered representative of the spectacle lens design of the sixth exemplary embodiment.

[0190] In this exemplary embodiment, the eyeglasses 51 include two single-vision lenses 52, one for the wearer's right eye and one for the left eye. These two lenses 52 are mounted in an eyeglass frame 53 and separated by a bridge 57 of the frame 53. For a nearsighted wearer, the lenses 52 are designed to provide full correction according to the wearer's prescription. Therefore, the lenses 52 are negative lenses.

[0191] Each spectacle lens 52 includes a first zone 54, which is analogous to the zone of sharpness for viewing objects. In other words, the first zone 54 provides a sharp image of the fovea of ​​the wearer's retina. This first zone 54 extends over the entire width of the spectacle lens 52, that is, its entire dimension d in the vertical direction. v The first region 54 extends upwards and is surrounded vertically by a second region, which in this exemplary embodiment comprises two sub-regions 55a and 55b, separated from each other by the first region 54. Sub-regions 55a and 55b include scattering centers 56 that provide diffuse optical properties. Therefore, the second region of this exemplary embodiment, i.e., its sub-regions 55a and 55b, forms a diffuse region with two diffuse sub-regions. The sub-regions 55a and 55b of the second region are striped and include a plurality of dot-shaped scattering centers 56.

[0192] In this exemplary embodiment, the height of the first zone 54 is given by the vertical distance between the sub-zones 55a and 55b of the second zone, and is selected such that when the spectacle lens 52 is worn according to a specific actual wearing position, the first zone allows a vertical viewing angle of approximately 1.0 degree. This viewing angle allows for clear viewing of 12pt. letters. Because the first zone 54 extends across the entire width of the spectacle lens 52, clear vision of letters in a line is not obstructed by the second zone, which improves reading comfort compared to prior art spectacle lenses with circular clear vision zones, as described, for example, in WO 2010 / 075319 A2, WO 2018 / 026697 A1, WO 2019 / 152438A1, and WO 2020 / 014613 A1.

[0193] In the sixth exemplary embodiment, the first region 54 includes: a nasal segment 54a, i.e., a segment positioned toward the nasal lens ring 58 of the spectacle lens; a temporal segment 54b, i.e., a segment positioned toward the temporal lens ring 59 of the spectacle lens; and a central segment 54c located between the nasal segment 54a and the temporal segment 54b. The first region 54 is curved such that the nasal segment 54a and the temporal segment 54b are displaced downward relative to the central segment 54c. When the wearer reads at close range with the book held in front of him in a plane at the reading distance from the wearer's retina, and when he moves his eyes from left to right while reading a line in the book, the curvature of the first region 54 conforms to the wearer's line of sight. Using the curved first region 54, even if the height of the first region only allows for a vertical viewing angle that just allows reading letters of 12pt size, it is possible to avoid a reduction in contrast of a portion of the currently read line due to diffusion caused by the second region 55a during eye movements while reading a line. Although the curved first zone 54 has been described in conjunction with the second zone 55, which provides reduced contrast (due to the scattering center in the second zone 55), the first zone can also be used in conjunction with the second zone, which provides peripheral myopic defocus. Next, reference will be made to... Figure 7 An exemplary embodiment of a method for manufacturing spectacle lenses according to a lens design based on the present invention is described.

[0194] In the first step S1, data from a prescription is received, wherein the prescription includes a summary of the refractive power required to correct the refractive error diagnosed. In the case of myopia, the prescription includes at least a spherical power value "sph". Additionally, in the case of additional astigmatism, it may also include a cylindrical power value "cyl" and a cylindrical axis value "axis". Other values, such as prism values, may also be present in the prescription. If the second zone is to provide peripheral myopic defocus, the prescription also includes an additional power value applied to provide peripheral myopic defocus. However, in this exemplary embodiment, a diffuse zone is provided in the second zone.

[0195] In this exemplary embodiment, the values ​​included in the prescription are based on measurements performed on the patient by an ophthalmologist, which provide refraction data relating to the patient's eyes. The refraction data can be objective refraction data, i.e., refraction data objectively measured using a refractometer or similar instrument, or subjective refraction data. In the case of subjective refraction data, this data can be collected by having the patient look at text or different sized targets while trying various test lenses until the patient experiences satisfactory visual acuity.

[0196] However, instead of the prescribed value, measurement data can also be provided in the form of other suitable values ​​(e.g., Zernike coefficients). Alternatively, values ​​representing objective refraction data can be received directly from the refractometer or any other suitable measuring device.

[0197] Based on the measurement data received in step S1, a single-vision spectacle lens with the desired optical power is produced in step S2 using a suitable process. This optical power provides a focused image on the fovea (with the aid of accommodation) when the wearer views the image through the lens, which is fitted according to the actual wearing position. A suitable process can be, for example, molding or machining. If machining is used, the single-vision lens can be manufactured, for example, from a semi-finished blank including a completed front surface. The rear surface of the semi-finished blank is then machined to transform it into a single-vision spectacle lens with the desired optical power.

[0198] In step S3, a scattering center is introduced into a region of the single-vision spectacle lens, which should become a diffuse region, i.e., a second region. This can be accomplished by any suitable method, for example by means of a laser that creates a dot-shaped or linear depression in the rear surface of the single-vision spectacle lens, or by means of a doping process. The scattering center is introduced into the single-vision spectacle lens such that the second region at least partially surrounds the region without a scattering center. Thus, the region without a scattering center allows for clear vision, whose optical power provides a focused image on the fovea, and this region forms the first region. In other words, the shape and size of the first region are defined by the second region, and in some cases by the lens rim of the spectacle lens. If the second region completely surrounds the first region, then the height and width of the first region are defined by the second region. On the other hand, if the second region only vertically surrounds the first region, then the height of the first region is defined by the second region, while its width is given by the width of the spectacle lens. Furthermore, it is also possible that the second zone surrounds the first zone upwards, downwards, and toward the nose, or upwards, downwards, and toward the temple, such that the first zone is limited by the second zone in three directions and by the lens rim in a fourth direction. However, in all cases, the first zone can be considered to be defined by the second zone within the boundaries of the lens, whether the second zone completely or partially surrounds the first zone.

[0199] The scattering center is introduced such that the aperture has a height that, when the spectacle lens is positioned according to a specific actual wearing position, it covers a vertical viewing angle of 0.8 to 1.5 degrees, particularly 1.0 to 1.2 degrees, for example, 1.0 or 1.2 degrees. Furthermore, the scattering center is introduced such that the width of the aperture is at least four times its height. The scattering center can be introduced to surround the aperture 360 ​​degrees, or such that the aperture extends to at least one of the nasal and temporal rims of the spectacle lens.

[0200] If the second zone should include a focusing structure rather than a scattering center, where the focusing structure provides peripheral myopic defocus when the wearer views through the first zone, then an alternative step S3 is used. In this alternative step S3, a mold is set on the rear surface of the single-vision lens, wherein the molded surface of the mold represents the negative shape of the focusing structure to be manufactured. With the mold set on the rear surface of the single-vision lens, the focusing structure is formed on the rear surface by injection molding or any other suitable molding process. After the molding process, a polishing process can be subsequently performed to remove any ridges remaining from the molding process. However, applying the focusing structure to the rear surface of the single-vision lens does not necessarily require a molding process. Other processes can also be used, such as swelling processes like oleic acid swelling or additive manufacturing processes like inkjet printing. Although in this exemplary embodiment, the focusing structure is formed on the rear surface, it can also be formed on the front surface of the single-vision lens.

[0201] After the second region is formed in step S3, that is, after the scattering center or focusing structure is provided, the eyeglass lens is completed.

[0202] The concept of the present invention has been described with reference to its exemplary embodiments to illustrate the invention. However, those skilled in the art will recognize that the concept of the invention can be implemented by variations of the exemplary embodiments. For example, the number and shape of the focusing structures may differ from those described in the exemplary embodiments. Furthermore, those skilled in the art can envision other manufacturing techniques to provide the focusing structures. For example, instead of forming the focusing structures on the front or rear surface of the spectacle lens, a region with a refractive index different from that of the rest of the spectacle lens may be provided within the spectacle lens. For example, providing such a region may be accomplished by a doping process. Thus, the focusing structures will exist within the spectacle lens, rather than on its surface. Therefore, the invention should not be limited to the exemplary embodiments, but only to the appended claims.

Claims

1. A spectacle lens kit including spectacle lenses, wherein, The eyeglass lenses include: - The first region with the first optical power, and - At least one second region surrounding the first region, wherein the second region includes at least one of the following: (i) focusing structures having a second optical power higher than the first optical power, or (ii) diffuse structures causing light to diffuse through the at least one second region; Its features are, The kit includes an instruction manual that specifies the actual wearing position of the eyeglass lenses relative to the wearer's eyes and a predetermined object distance model. This predetermined object distance model includes the object distances for different viewing directions when the eyeglass lenses are worn according to the actual wearing position, under which the wearer should be able to see clearly. The first region includes the nasal segment, the temporal segment, and the central segment located between the nasal segment and the temporal segment. The first zone is curved such that the nasal segment and / or the temporal segment are displaced downward relative to the central segment so that when the spectacle lens is positioned relative to the wearer's eyes according to a given actual wearing position and objects are arranged according to the predetermined object distance model, it follows the wearer's converging gaze during reading.

2. The spectacle lens kit as claimed in claim 1, characterized in that, The first region has a given height (dv) and a given width (dh), and the width (dh) and height (dv) of the first region are one of the following: a) The width (dh) of the first zone is at least three times the height (dv) of the first zone. b) The width (dh) of the first zone is at least four times the height (dv) of the first zone. c) The width (dh) of the first zone is at least five times the height (dv) of the first zone.

3. The spectacle lens kit as described in any one of claims 1 and 2, characterized in that, The first region has a given height (dv) and a given width (dh), and the width (dh) and height (dv) of the first region are one of the following: a) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 3 mm to 5 mm, and wherein said portion of the width (dh) is at least three times the uniform height (dv). b) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 3 mm to 5 mm, and wherein said portion of the width (dh) is at least four times the uniform height (dv). c) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 4 mm to 5 mm, and wherein said portion of the width (dh) is at least three times the uniform height (dv). d) The height (dv) of the first zone is uniform along at least a portion of the width (dh) of the first zone, wherein the uniform height (dv) of the first zone within said portion is a value in the range of 4 mm to 5 mm, and wherein said portion of the width (dh) is at least four times the uniform height (dv).

4. The spectacle lens kit as claimed in any one of claims 1 and 2, characterized in that, At least one of the following options applies: - When the eyeglass lenses are positioned according to the actual wearing position, the height of the first zone ensures that it covers a vertical viewing angle of 0.8 to 1.5 degrees. - The width (dh) of the first zone matches the width of the eyeglass lens.

5. The spectacle lens kit as described in any one of claims 1 to 2, characterized in that, The geometric center of the first zone is at least vertically offset from the center of the light beam that penetrates the lens when reading directly at the target, and is shifted towards the temporal region if the lens is for the right or left eye, and towards the nose if the lens is for the corresponding other eye.

6. A computer-based method for designing an eyeglass lens, the purpose of which is to manufacture the eyeglass lens using the design, the computer-based method comprising the following steps: - The spectacle lens is designed to include a region having at least one of: (i) focusing structures having a second optical power higher than a first optical power, or (ii) diffuser structures that diffuse light passing through the region, wherein the region is designed to form a second region that defines the first region by at least partially surrounding the first region, the first region having the first optical power. The feature is that the second zone is designed such that the first zone, defined by the at least partially surrounded second zone, is curved so that when the spectacle lens is positioned relative to the wearer's eyes according to a given actual wearing position and objects are arranged according to a predetermined object distance model, it follows the wearer's converging line of sight during reading. The first region, defined by the second region that is at least partially surrounded, includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment. The first region is curved, causing the nasal segment and / or the temporal segment to shift downward relative to the central segment.

7. The computer implementation method as described in claim 6, characterized in that, The first zone is designed to have a given height (dv) and a given width (dh), where the width (dh) and height (dv) of the first zone are one of the following: a) The width (dh) of the first zone is at least three times the height (dv) of the first zone. b) The width (dh) of the first zone is at least four times the height (dv) of the first zone. c) The width (dh) of the first zone is at least five times the height (dv) of the first zone.

8. The computer implementation method as described in any one of claims 6 and 7, characterized in that, The first zone is designed to have a given height (dv) and a given width (dh), where the width (dh) and height (dv) of the first zone are one of the following: a) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 3 mm to 5 mm, and wherein said portion of the width (dh) is at least three times the uniform height (dv). b) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 3 mm to 5 mm, and wherein said portion of the width (dh) is at least four times the uniform height (dv). c) The height (dv) of the first region is uniform along at least a portion of the width (dh) of the first region, wherein the uniform height (dv) of the first region within said portion is a value in the range of 4 mm to 5 mm, and wherein said portion of the width (dh) is at least three times the uniform height (dv). d) The height (dv) of the first zone is uniform along at least a portion of the width (dh) of the first zone, wherein the uniform height (dv) of the first zone within said portion is a value in the range of 4 mm to 5 mm, and wherein said portion of the width (dh) is at least four times the uniform height (dv).

9. The computer implementation method as described in any one of claims 6 to 7, characterized in that, At least one of the following options applies: - The second zone is designed such that the first zone, defined by the at least partially surrounded second zone, has a size such that when the designed spectacle lens is positioned according to the actual wearing position, it covers a vertical viewing angle of 0.8 to 1.5 degrees. - The second zone is designed so that the width (dh) of the first zone matches the width of the eyeglass lens design.

10. The computer implementation method as described in any one of claims 6 to 7, characterized in that, At least one of the following options applies: - The size of this first zone is such that when the designed eyeglass lenses are positioned according to the actual wearing position, they cover a vertical viewing angle of 0.8 to 1.5 degrees. - The width (dh) of the first zone matches the width of the eyeglass lens design. - The width (dh) of the first zone is at least six times the height (dv) of the first zone.

11. The computer implementation method as described in any one of claims 6 to 7, characterized in that, The geometric center of the first zone is at least vertically offset from the center of the light beam that penetrates the lens when reading directly onto the target, and is shifted towards the temporal region if the lens is designed for the right or left eye, and towards the nose if the lens is designed for the corresponding other eye.

12. The computer implementation method as described in any one of claims 6 to 7, characterized in that, The method also includes the step of manufacturing the spectacle lens according to the design.

13. A computer program product comprising a computer program for designing an eyeglass lens for manufacturing the eyeglass lens using the design, the eyeglass lens being positioned relative to a wearer's eye according to a given actual wearing position and a predetermined object distance model, the predetermined object distance model including object distances for different viewing directions when the eyeglass lens is worn according to the actual wearing position, under which the wearer should be able to see clearly, the computer program including instructions that, when executed on a computer, prompt the computer to perform the computer-implemented method as claimed in any one of claims 6 to 12.

14. A spectacle lens, comprising: - A first region having optical power, wherein the first region has a given height (dv) and a given width (dh), and - At least one second region surrounding the first region, wherein the second region includes at least one of the following: (i) focusing structures having a positive additional power relative to the optical power present in the first region, or (ii) diffuse structures causing light to diffuse through the at least one second region. Wherein, the width (dh) of the first region is at least four times the height (dv) of the first region. Its features are, The first region includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, wherein the first region is curved such that the nasal segment and / or the temporal segment are displaced downward relative to the central segment.

15. The spectacle lens as claimed in claim 14, characterized in that, The width (dh) of the first zone matches the width of the eyeglass lens, or the width (dh) of the first zone is at least six times the height (dv) of the first zone.

16. A computer-readable medium having a dataset stored thereon, the dataset comprising at least one of the following types of data: (i) a digital representation of an eyeglass lens as claimed in claim 14 or 15, wherein, The digital representation of the spectacle lens is configured for manufacturing the spectacle lens, (ii) the digital representation of the spectacle lens as claimed in claim 14 or 15, wherein the digital representation of the spectacle lens is configured to be used by one or more manufacturing machines to manufacture the spectacle lens, and (iii) data containing computer-readable instructions for controlling one or more manufacturing machines to produce the spectacle lens as claimed in claim 14 or 15.

17. A spectacle lens kit, comprising spectacle lenses as described in claim 14 or 15 and an instruction manual including the actual wearing position of the spectacle lenses, characterized in that, When the spectacle lens is positioned according to the actual wearing position, the height of the first zone is such that it covers a vertical viewing angle of 0.8 to 1.5 degrees, wherein the actual wearing position is the position of the spectacle lens relative to the eyes and face during wearing, including orientation.

18. The spectacle lens kit as claimed in claim 17, characterized in that, The geometric center of the first zone is at least vertically offset from the center of the light beam that penetrates the lens when reading directly at the target, and is shifted towards the temporal region if the lens is for the right or left eye, and towards the nose if the lens is for the corresponding other eye.

19. A computer-readable medium having a dataset stored thereon, the dataset comprising at least one of the following types of data: (i) a digital representation of an eyeglass lens kit as claimed in any one of claims 1 to 4 or as claimed in claim 17 or 18, including a digital representation of the eyeglass lens and a digital representation of an instruction manual including the actual wearing position of the eyeglass lens; (ii) a digital representation of an eyeglass lens kit as claimed in any one of claims 1 to 4 or as claimed in claim 17 or 18, including a digital representation of the eyeglass lens and a digital representation of an instruction manual including the actual wearing position of the eyeglass lens, wherein, The digital representation of the spectacle lens is configured to be used by one or more manufacturing machines to manufacture the spectacle lens, and (iii) the digital representation of the spectacle lens kit as described in any one of claims 1 to 4 or as described in claim 17 or 18 and data containing computer-readable instructions for controlling one or more manufacturing machines to produce the spectacle lens, the digital representation of the spectacle lens kit including the digital representation of the spectacle lens and a digital representation of the instruction manual including the actual wearing position of the spectacle lens.

20. A computer-based method for designing an eyeglass lens, the purpose of which is to manufacture the eyeglass lens using the design, the computer-based method comprising the following steps: - Design a second region that at least partially surrounds a first region having a height (dv) and a width (dh), the second region comprising at least one of: (i) focusing structures that provide positive additional focal power relative to the optical power present in the first region, or (ii) diffuser structures that cause light diffusion in the second region, the width of the first region being at least four times the height of the first region. Its features are, - The second zone is designed such that the first zone is curved so that it follows the converging line of sight of the wearer when reading, who is wearing the glasses lenses in the actual wearing position. The first region, defined by the second region that at least partially surrounds it, includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, and the first region is curved such that the nasal segment and / or the temporal segment are displaced downward relative to the central segment.

21. The computer implementation method as described in claim 20, characterized in that, At least one of the following options applies: - The size of this first zone is such that when the designed eyeglass lenses are positioned according to the actual wearing position, they cover a vertical viewing angle of 0.8 to 1.5 degrees. - The width (dh) of the first zone matches the width of the eyeglass lens design. - The width (dh) of the first zone is at least six times the height (dv) of the first zone.

22. The method as described in claim 20 or 21, characterized in that, The geometric center of the first zone is at least vertically offset from the center of the light beam that penetrates the lens when reading directly onto the target, and is shifted towards the temporal region if the lens is designed for the right or left eye, and towards the nose if the lens is designed for the corresponding other eye.

23. The method as described in claim 20 or 21, characterized in that, The method also includes the step of manufacturing the eyeglass lens according to the design.

24. A computer program product comprising a computer program including instructions that, when executed by a computer, cause the computer to perform the method according to any one of claims 20 to 23.

25. A method for manufacturing spectacle lenses that will be positioned relative to the wearer's eye according to a given actual wearing position, comprising the steps of: - Provides spectacle lenses with optical power, and - At least one of the following is formed in the area of ​​the spectacle lens: (i) focusing structures that provide positive additional focal power relative to the optical focal power, or (ii) diffuse structures that cause light diffusion, wherein the region is formed as a second region that defines the first region by at least partially surrounding it, the first region having a height (dv) and a width (dh), wherein the second region is formed to have dimensions such that the width (dh) of the first region defined by the at least partially surrounding second region is at least four times the height (dv) of the first region. Its features are, The second region is formed such that the first region, defined by the at least partially surrounded second region, includes a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment, and the first region is curved such that the nasal segment and / or the temporal segment are displaced downward relative to the central segment.

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