Spectacle lens design data and method for manufacturing a spectacle lens

Abstract

There is provided an ophthalmic lens design data for manufacturing an ophthalmic lens associated with a wearer. The ophthalmic lens has a dioptric power and at least a partially diffractive additional power, and is provided with a central zone having a first diffractive additional power and adjusted to achieve emmetropia of the wearer. The ophthalmic lens is further provided with a peripheral zone arranged radially outward of the central zone, wherein the peripheral zone has a second diffractive additional power and is adjusted to provide a focus in at least one of in front of the retina of the wearer or behind the retina of the wearer. The ophthalmic lens design data is adjusted such that the ophthalmic lens further has a first transition zone arranged between the central zone and the peripheral zone, wherein the first transition zone is adapted to adjust the diffractive efficiency in a radially outward direction from the first diffractive additional power to the second diffractive additional power. The ophthalmic lens has a uniform dioptric power extending at least over the central zone, the peripheral zone and the first transition zone. The uniform dioptric power is adjusted to provide a focus in front of the retina of the wearer. The central zone has a negative diffractive additional power, such that the combination of the uniform dioptric power and the negative diffractive additional power in the central zone is adjusted to achieve emmetropia of the wearer.

Description

[0001] Embodiments of the following are provided: spectacle lens design data for use in manufacturing spectacle lenses relevant to a wearer; a dataset in the form of a computer-readable data signal; a data signal carrying the dataset according to this disclosure; a method for manufacturing spectacle lenses; and spectacle lenses relevant to a wearer. Therefore, the embodiments relate to spectacle lenses.

[0002] It is observable that myopia (i.e., nearsightedness) is increasing globally, particularly in Asia, where a significant increase in the number of nearsighted individuals has been observed. Myopia is a refractive error in which, with the eye's accommodation relaxed, the image of an object at infinity appears in a plane in front of the retina, and the light falling on the retina is correspondingly presented as a defocused image. Typically, myopia is a refractive error that worsens over time due to the eye becoming increasingly elongated and thus the image plane itself becoming farther away from the retina.

[0003] The causes of myopia are believed to be multifactorial, and the mechanisms underlying the abnormal increase in the axial length of the eyeball are not yet fully understood. Therefore, myopia was previously considered incurable or irreversible. In this context, correcting myopia with eyeglasses or refractive corneal surgery can be seen as a symptom-combating measure, since the abnormal increase in the axial length of the eyeball is not reversible.

[0004] Existing technologies have disclosed various methods for controlling myopia development or progression, such as the use of bifocal and progressive lenses (especially for children), rigid gas permeable contact lenses for children, orthokeratology (ortho-k) contact lenses, topical application of medications to control accommodation, vision training, or maximizing time spent outdoors. While some of these known methods may slow myopia progression in certain situations, none of them produce verifiable results in completely eliminating myopia or completely stopping its progression.

[0005] Aside from medications (such as atropine or pirenzepine) (which are problematic, especially in children), orthokeratology (ortho-k) is one of the most effective known options for slowing myopia progression. The prevailing view is that changes in peripheral retinal refractive patterns are the cause of ortho-k's influence on myopia progression and axial elongation, due to corneal flattening and accompanying morphological changes caused by ortho-k contact lenses. However, ortho-k treatment also carries risks, such as microbial keratitis, corneal discoloration, epithelial iron deposits, prominent striae, and alterations in corneal biomechanical properties. Furthermore, ideal application of ortho-k contact lenses requires a high degree of lens fit, strict adherence to usage and cleaning protocols, regular checkups, and comprehensive and appropriate treatment of the eye in case of complications. Additionally, ethical considerations exist regarding the use of contact lenses in children, as they can cause significant overnight corneal deformation and irreversible damage to corneal oxygenation.

[0006] WO 2004 / 107024 A1 describes a method and apparatus for controlling optical aberrations to alter modulation transfer function by providing an eye system, the eye system including predetermined correction factors to generate fundamentally corrected stimuli for repositioning mid-spatial frequency peaks and high-spatial frequency peaks relative to each other, thereby altering accommodation hysteresis.

[0007] WO 2005 / 055891 A1 describes a method and apparatus for controlling optical aberrations to change the relative curvature of an image field.

[0008] WO 2006 / 124198 A1 describes a multifocal ophthalmic lens comprising a lens element having an anterior surface and a posterior surface, the lens element having a central aspheric refractive zone disposed on one of the anterior and posterior surfaces, and a diffractive bifocal zone disposed outside the aspheric refractive zone. The central aspheric refractive zone may be disposed on the anterior surface, and the diffractive bifocal zone may be disposed on the posterior surface.

[0009] WO 2021 / 181304 A1 describes an ophthalmic lens for treating myopia, comprising: a base lens having an anterior surface, a posterior surface, and a first power profile selected to correct or substantially correct distance refractive errors of the eye; one or more myopia control elements on at least one of the anterior and posterior surfaces of the lens; a first visual zone having a size selected at least in part based on the concentration of a medication used in conjunction with the ophthalmic lens, the first visual zone being configured to minimize, reduce, and / or eliminate visual impairment of distance vision; and a second visual zone including a relatively corrected power profile compared to the first visual zone; wherein the size of the second visual zone and at least one of the relatively corrected power profile of the second visual zone are selected at least in part based on the concentration of the medication. The lens appears to be used in conjunction with a medication.

[0010] WO 2007 / 041796 A1 describes an ophthalmic lens element for correcting myopia in a wearer's eye. The lens element includes a central region and a peripheral region. The central region provides a first optical correction for substantially correcting myopia associated with the foveal region of the wearer's eye. The peripheral region surrounds the central region and provides a second optical correction for substantially correcting myopia or hyperopia associated with the peripheral region of the retina of the wearer's eye.

[0011] CN 104678572 describes a glass lens. This glass lens can exhibit the function of inhibiting the development of refractive errors in the eye, while simultaneously ensuring adequate visibility and a comfortable fit. The glass lens includes a first refractive region and a second refractive region, wherein each first refractive region has a first refractive power based on a prescription for correcting the refractive error; each second refractive region has a refractive power different from the first refractive power and has the function of focusing an image outside the retina of the eye to inhibit the development of refractive errors, wherein, near the central portion of the lens, the second refractive region forms multiple independent island-like regions, and the first refractive region forms a region outside the area of ​​the second refractive region.

[0012] US10268050 B2 describes an eyeglass lens that suppresses refractive errors of the eye and ensures adequate vision. The eyeglass lens includes a first refractive region and a second refractive region. Each first refractive region has a first refractive power, which can be based on a prescription for correcting the refractive error of the eye. Each second refractive region has a refractive power different from the first refractive power and can be used to focus an image outside the retina of the eye to suppress the development of refractive errors. Near the central portion of the lens, the second refractive regions form multiple independent island-like regions, and the first refractive regions form regions outside the areas of the second refractive regions.

[0013] EP 3759548 A1 describes a lens element intended to be worn in front of a human eye, the lens element comprising: a refractive region having a refractive power based on a prescription for the human eye; and a plurality of at least three non-contiguous optical elements, at least one of which has aspherical optical function.

[0014] CN 112 649 971A describes an ophthalmic lens comprising a central refractive region and a peripheral diffraction region. The peripheral diffraction region is divided into full-ring, semi-ring, and fan-ring shapes, and the semi-ring and fan-ring shapes are further divided into nasal peripheral diffraction regions and temporal peripheral diffraction regions.

[0015] CN 115 453 771A describes a multifocal Fresnel eyeglass lens with myopia treatment and correction functions, and a method for manufacturing the same. The treatment and correction functions are integrated into a single Fresnel lens, and a special annular structure of the Fresnel lens is used to divide the curved surface of the shared lens into multiple segments of equal thickness.

[0016] US2009 / 046349 A1 describes a lens system having a diffractive power region. This diffractive power region has multiple concentric surface concave-convex diffractive structures. Light incident on diffractive structures near the center point contributes more to the optical power than light incident on diffractive structures spaced circumferentially away from it.

[0017] US2009 / 088840 A1 describes multifocal ophthalmic lenses (e.g., multifocal intraocular lenses) that employ a central refractive region to provide refractive focusing power and a diffractive region to provide two diffractive focusing powers. In many cases, the refractive focusing power provided by the central region of the lens corresponds to the distance focusing power, which is substantially equal to one of the two diffractive focusing powers, while the other diffractive focusing power corresponds to the near focusing power.

[0018] US 5,699,142 A describes a diffractive multifocal ophthalmic lens that includes a toe region with a smoothly decreasing step height to shift energy balance from near images to far images, thereby reducing perceived glare when viewing discrete distant light sources.

[0019] WO 2022 / 254389 A1 describes an ophthalmic lens for myopia control, which includes a pattern or mask that blocks and / or attenuates light, for example, by amplitude modulation. The amplitude modulation can be binary, for example, where zero amplitude means absorbing or blocking light, and a value of one means that light can pass through the lens without change.

[0020] WO 2014 / 198972 A1 describes a lens that can be implemented as both a contact lens and an intraocular lens, the thickness of which is obtained in both cases through an iterative process and depends on a non-periodic ordered step function Gs(u), where S is the number of iterations and is equal to or less than 2. This contact lens is used to control myopia. The lens manufacturing method starts with a given refractive lens and includes modifying the lens surface by means of the step function Gs(u), where S is equal to or less than 2. The lens may have a central refractive zone and a peripheral diffraction zone.

[0021] Although WO 2014 / 198972 A1 covers different technical fields (i.e., contact lenses and intraocular lenses), it can be considered the prior art closest to the subject matter claimed.

[0022] The subject matter of claim 1 differs from WO 2014 / 198972 A1 at least in that it claims protection for an eyeglass lens and another distinguishing feature, according to which the eyeglass lens includes a first transition region disposed between a central region and a peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from a first diffraction additional power to a second diffraction additional power in a radially outward direction.

[0023] Given the closest existing technologies and distinguishing features, the objective technical problem can be considered as applying a multifocal diffraction-refractive hybrid design for myopia control to spectacle lenses.

[0024] This problem is solved by spectacle lens design data for manufacturing spectacle lenses, spectacle lenses, a dataset in the form of a computer-readable data signal, a data signal carrying the dataset according to this disclosure, a computer-readable storage medium having the dataset according to this disclosure stored thereon, and a method for generating spectacle lens design data. Optional embodiments are provided in the dependent claims and description.

[0025] In one aspect, an spectacle lens is provided. The spectacle lens has a refractive power and at least a partial diffraction-added power, and is provided with a central region having a first diffraction-added power and adjusted to achieve emmetropia for the wearer. Furthermore, the spectacle lens design data is adjusted such that the spectacle lens has a peripheral region disposed radially outward of the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in front of and / or behind the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region disposed between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction.

[0026] The features described in the preceding paragraphs fully realize the solution to the above problems.

[0027] However, those skilled in the art, starting from the closest existing technology, would only use a multifocal diffraction-refractive hybrid scheme for myopia control to provide a central refractive region and a peripheral diffraction region at the spectacle lens in order to accomplish the task of solving the objective technical problem. However, those skilled in the art would not have any motivation to provide a transition region. Therefore, while this solution can solve the objective technical problem, it deviates from the subject matter of claim 1. Thus, this solution does not make the subject matter of claim 1 obvious.

[0028] On the other hand, spectacle lens design data is provided for manufacturing spectacle lenses relevant to a wearer. The spectacle lens has a refractive power and at least a partial diffraction-added power, and is provided with a central region having a first diffraction-added power and adjusted to achieve emmetropia for the wearer. Furthermore, the spectacle lens design data is adjusted such that the spectacle lens has a peripheral region arranged radially outward of the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focus in front of or behind the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The spectacle lens has a uniform refractive power extending at least in the central region, the peripheral region, and the first transition region. This uniform refractive power is adjusted to provide focus in front of the wearer's retina. The central region has negative diffraction additional power, which allows the combination of uniform refractive power and negative diffraction additional power in the central region to be adjusted to achieve emmetropia for the wearer.

[0029] In another aspect, spectacle lens design data is provided for manufacturing spectacle lenses relevant to a wearer. The spectacle lens has a refractive power and at least a partial diffraction-added power, and is provided with a central region having a first diffraction-added power and adjusted to achieve emmetropia for the wearer. Furthermore, the spectacle lens design data is adjusted such that the spectacle lens has a peripheral region arranged radially outward from the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in front of or behind the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The peripheral region has positive and negative diffraction-added powers provided by one or more positive diffraction orders and one or more negative diffraction orders.

[0030] In another aspect, spectacle lens design data is provided for manufacturing spectacle lenses relevant to a wearer. The spectacle lens has a refractive power and at least a partial diffraction-added power, and provides a central region having a first diffraction-added power of zero, adjusted to achieve emmetropia (normal vision) for the wearer. Furthermore, the spectacle lens design data is adjusted such that the spectacle lens has a peripheral region arranged radially outward from the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in front of or behind the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power of zero to the second diffraction-added power in a radially outward direction. The spectacle lens has a uniform refractive power extending at least in the central region, the peripheral region, and the first transition region. The uniform refractive power is adjusted to achieve emmetropia for the wearer.

[0031] Additionally, an eyeglass lens manufactured using eyeglass lens design data according to this disclosure is provided.

[0032] In addition, a dataset in the form of computer-readable data signals is provided. This dataset includes at least one of the following types of data: (i) a virtual representation of an eyeglass lens configured for manufacturing an eyeglass lens according to this disclosure, and (ii) data containing computer-readable instructions for controlling one or more manufacturing machines to manufacture an eyeglass lens according to this disclosure.

[0033] In addition, data signals carrying datasets according to this disclosure.

[0034] Additionally, a computer-readable storage medium is provided on which a dataset according to the present disclosure is stored.

[0035] Furthermore, a method is provided, configured to generate spectacle lens design data via a computer device. The spectacle lens design data is adjusted such that the spectacle lens has a refractive power and at least a partial diffraction-added power, and the spectacle lens comprises a central region and a peripheral region. The central region has a first diffraction-added power and is adjusted to achieve emmetropia (normal vision) for the wearer. The peripheral region is arranged radially outward from the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in at least one of anterior to or posterior to the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further comprises a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The method can be further configured to manufacture spectacle lenses using the spectacle lens design data.

[0036] In another aspect, a method is provided, configured to generate spectacle lens design data via a computer device. The spectacle lens design data is adjusted such that the spectacle lens has a refractive power and at least a partial diffraction-added power, and the spectacle lens provides a central region and a peripheral region. The central region has a first diffraction-added power and is adjusted to achieve emmetropia (normal vision) for the wearer. The peripheral region is arranged radially outward from the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focus in at least one of anterior or posterior to the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The spectacle lens has a uniform refractive power extending at least over the central region, the peripheral region, and the first transition region. This uniform refractive power is adjusted to provide focus in front of the wearer's retina. The central region has negative diffraction additional power, which allows the combination of uniform refractive power and negative diffraction additional power in the central region to be adjusted to achieve emmetropia for the wearer.

[0037] In another aspect, a method is provided, configured to generate spectacle lens design data via a computer device, the spectacle lens design data being adjusted such that the spectacle lens has a refractive power and at least a partial diffraction-added power, and the spectacle lens provides a central region and a peripheral region, the central region having a first diffraction-added power and adjusted to achieve emmetropia for the wearer, the peripheral region being arranged radially outward of the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in at least one of anterior to or posterior to the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The peripheral region has positive and negative diffraction-added powers provided by one or more positive diffraction orders and one or more negative diffraction orders.

[0038] In another aspect, a method is provided, configured to generate spectacle lens design data via a computer device. The spectacle lens design data is adjusted such that the spectacle lens has a refractive power and at least a partial diffraction-added power, and the spectacle lens provides a central region and a peripheral region. The central region has a first diffraction-added power and is adjusted to achieve emmetropia (normal vision) for the wearer. The peripheral region is arranged radially outward from the central region, wherein the peripheral region has a second diffraction-added power and is adjusted to provide focal point in at least one of anterior to or posterior to the wearer's retina. The spectacle lens design data is characterized by being adjusted such that the spectacle lens further has a first transition region arranged between the central region and the peripheral region, wherein the first transition region is adapted to adjust the diffraction efficiency from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The spectacle lens has a uniform refractive power extending at least over the central region, the peripheral region, and the first transition region. The uniform refractive power is adjusted to achieve emmetropia (normal vision) for the wearer.

[0039] Spectacular lenses may meet the specifications of section 3.5.2 of ISO 13666:2019(E). In particular, spectacular lenses may be ophthalmic lenses that are worn in front of the eyeball but do not come into contact with the eyeball, in accordance with section 3.5.1 of ISO 13666:2019(E).

[0040] Spectrum lens design data can be any kind of information enabling the manufacture of spectrum lenses with the specifications provided by the spectrum lens design data. Specifically, design data may include information about the geometry of the front surface, back surface, and optionally edge profiles. Furthermore, design data may include information about one or more materials from which the spectrum lens may be constructed, or which may comprise such materials. Additionally, design data may include information about various parameters of the specified spectrum lens (such as refractive index), one or more diffraction structures or patterns applied to the spectrum lens, centering information (such as centering point, viewpoint), the position and / or appearance of at least one optical mark, and / or any other characteristics conducive to the manufacture of the spectrum lens.

[0041] Throughout this disclosure, the characteristics explained for spectacle lenses and the disclosures provided should be considered as explanations and disclosures made in connection with spectacle lens design and spectacle lens design data, and vice versa.

[0042] The wearer may be a person with refractive errors, particularly myopia, wherein the spectacle lens design data and spectacle lenses manufactured according to the spectacle lens design data are provided for at least partially treating the refractive error when worn by the wearer. The spectacle lens design may specifically provide refractive power and diffraction supplementary power for at least partially compensating for and / or treating the refractive error. In particular, the wearer may have myopia, and one of the purposes of the spectacle lens design data and the corresponding spectacle lenses may be to reduce and / or slow the progression of myopia.

[0043] The central area of ​​an eyeglass lens can be located at the center of the lens. According to section 3.2.15 of ISO 13666:2019(E), the center of an eyeglass lens can correspond to the optical center of the lens.

[0044] As commonly used, the term "optical power" refers to the combined 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 cylindrical power (which brings a paraxial parallel beam to two separate focal lines perpendicular to each other (Section 3.10.2 of ISO 13666:2019(E)), and is usually referred to in prescriptions as the "cylindrical" value or abbreviation "cyl"). "Vertical power" is the reciprocal of the paraxial vertex length (Section 3.10.7 of DIN EN ISO 13666:2019(E)). Optical power can include the spherical power and astigmatic power of spectacle lenses according to Section 3.5.2 of ISO 13666:2019(E) (according to Section 3.10.7 of ISO 13666:2019(E)).

[0045] The refractive power of an eyeglass lens can be controlled by the refraction of light in the lens material and the geometry of the lens (particularly the shape of the front and / or back surfaces). The refractive power can be uniform across the entire lens. In other words, an eyeglass lens may not have distinct zones exhibiting different refractive indices. The characteristics interpreted for eyeglass lenses can be applied accordingly to lens design data. The refractive power can be zero; that is, an eyeglass lens may have zero refractive power entirely or in one or more areas. This is especially true for eyeglass lenses intended solely to reduce myopia and / or slow its progression without compensating for any other refractive abnormalities in the wearer.

[0046] Diffraction-added power can be the optical power provided by the diffraction structure applied to an eyeglass lens. The term "diffraction-added power" indicates that diffraction power can be added to any existing refractive power, whereby the diffraction power is added to the refractive power and thus contributes to the overall optical power. Diffraction-added power can be positive or negative. However, since the refractive power of the entire eyeglass lens and / or one or more regions of the eyeglass lens can be zero, diffraction-added power should also be considered as diffraction-added power if no refractive power is available. Furthermore, for one or more regions of the eyeglass lens, the diffraction-added power can be zero. However, a corresponding region of the eyeglass lens can be said to have diffraction-added power, but that diffraction-added power is zero. Therefore, a first diffraction-added power or a second diffraction-added power can be zero. Different regions of the eyeglass lens can be provided with different diffraction structures, and therefore have different diffraction-added powers.

[0047] A diffraction structure applied to a spectacle lens can simultaneously provide different diffraction-added focal powers in the same region of the lens. This can be achieved by providing a diffraction structure with corresponding diffraction efficiencies. For example, the diffraction efficiency of a diffraction structure in a specific region of the spectacle lens can be adapted to diffract light into several different diffraction orders. For example, the diffraction efficiency of a diffraction structure in a region of the spectacle lens can be adapted to diffract light into multiple positive diffraction orders, and / or multiple negative diffraction orders, and / or one or more positive diffraction orders and one or more negative diffraction orders. Positive diffraction orders can result in an effective optical power higher than the optical power provided by the refractive power of the spectacle lens, thus allowing the effective focal length of the corresponding region of the spectacle lens to be shorter than the effective focal length of the corresponding region without a diffraction structure. Negative diffraction orders can result in an effective optical power lower than the optical power provided by the refractive power of the spectacle lens, thus allowing for a longer effective focal length. Different diffraction orders can result in different focal shifts, thus providing additional optical powers different from the refractive power of the spectacle lens. Alternatively, the diffraction structure can be adapted to diffract light partially into positive or negative diffraction orders and partially into the zeroth order diffraction order.

[0048] The central region, peripheral region, edge region, first transition region, second transition region, and edge region are collectively referred to as areas of the spectacle lens. These regions may be arranged concentrically on the spectacle lens. Alternatively, however, these regions extend non-concentrically around the central region. These regions may be provided in a circular or non-circular manner. In particular, these regions may differ from one another by having different diffraction structures applied thereto and thus by providing different diffractive additional powers possessed by the respective regions. All regions may have the same refractive power, i.e., the refractive power may be uniform throughout the spectacle lens. When the spectacle lens is worn by the wearer, the different regions may involve different ranges of visual angles. Regions arranged at a larger radius of the spectacle lens may involve a range of visual angles with larger viewing angles, at which these ranges of visual angles deviate from the central axis extending through the central region.

[0049] Some of these regions, particularly the diffraction power regions, may comprise multiple regions arranged radially concentrically. These regions may differ from one another in radial location and / or extent and / or in the refractive power and / or diffraction-additional power provided within the respective regions. Furthermore, the diffraction power regions may comprise multiple regions that can represent Fresnel zones, as described in EP 1194797 B1, for example. Fresnel zones may form part of a diffraction structure disposed within the diffraction-additional power regions. Each or some of these regions may comprise multiple sub-regions. Each or some of these regions may comprise a principal sub-region and a phase sub-region, which may be adapted to control the relative phase shift of the wavefront provided by the different regions, as described in EP 1194797 B1, for example.

[0050] Adjusting the peripheral region to provide focus in at least one of the areas in front of or behind the wearer's retina means that the peripheral region provides defocus relative to the focus of the central region, which is adjusted to achieve emmetropy. Accordingly, the peripheral region can be adjusted to have a higher and / or lower optical power than the central region. Optionally, the peripheral region can be adjusted to provide bifocal optical power, thereby providing positive and negative defocus compared to the central region. This can be achieved by providing corresponding diffraction-additional power based on positive and negative diffraction orders.

[0051] The method can be a computer-implemented method, which means that some or all of the method steps can be performed by and / or using a computer.

[0052] A virtual representation of an eyeglass lens can be any kind of information capable of manufacturing an eyeglass lens with specifications provided by eyeglass lens design data. Specifically, a virtual representation of an eyeglass lens can include information about the geometry of the front surface, back surface, and optionally edge contours. Furthermore, a virtual representation of an eyeglass lens can include information about one or more materials, which the eyeglass lens may be made of or may include. Additionally, a virtual representation of an eyeglass lens can include information about various parameters of the specified eyeglass lens (such as refractive index), one or more diffraction structures or patterns applied to the eyeglass lens, centering information (such as centering point, viewpoint), the position and / or appearance of at least one optical mark, and / or any other characteristics conducive to manufacturing the eyeglass lens. A virtual representation of an eyeglass lens can be considered a digital twin of the eyeglass lens.

[0053] As commonly used, the term "emmetropia" refers to the situation where the optical power of the eye's optical components (i.e., the cornea and lens) and the optical power of spectacle lenses correcting the eye's refractive error are matched to the length of the eyeball so that a far point source is focused on the retina. In the context of this disclosure, a perfect compensation deviation of the spectacle lens power from the eye's refractive error of ±0.2D (which represents the maximum permissible deviation for spectacle lenses according to DIN EN ISO 8980-1 and 2) or less can still be considered to provide emmetropia. Emmetropia can be provided for the eyes of the (intended) wearer of spectacle lenses with a predetermined refractive error.

[0054] The advantage provided by this disclosure is that it allows for the provision of spectacle lens design data, thereby offering different optical powers in different regions of the spectacle lens. This allows the provided spectacle lenses to have different optical powers for different viewing angles of the wearer. This effect can be used to compensate for and / or treat and / or slow the progression of myopia. In particular, this can be used to achieve emmetropia in the central region of the spectacle lens, i.e., complete compensation for the wearer's refractive error in the central region of the spectacle lens, while having effective positive defocus and / or blurring in the outer regions (i.e., at larger viewing angles). This allows light transmitted through the central region to focus onto the wearer's retina, while light transmitted through the outer regions focuses at a shorter focal length within the eye, in front of the wearer's retina. This can be beneficial for slowing the progression of myopia.

[0055] Furthermore, the advantage provided by this disclosure is that different optical powers in different regions can be achieved solely based on different diffraction structures in those regions, and therefore, it is not necessarily necessary to change the refractive power of the spectacle lens. This allows for spectacle lens designs with uniform refractive power across the entire lens, as the desired difference in diffraction-added power can be achieved by providing diffraction structures. This can facilitate the spectacle lens manufacturing process and thus reduce manufacturing costs.

[0056] Furthermore, the advantage provided by this disclosure is that abrupt changes in optical power at the boundary of the spectacle lens can be avoided, because the first transition region ensures a smooth transition between the central and peripheral regions, which may have significant differences in diffraction-added power. Since the first transition region adjusts the diffraction efficiency from the first diffraction-added power in the central region to the second optical power in the peripheral region, rapid changes in optical power at the boundary between the central and peripheral regions can be avoided, and thus the perceived optical quality of the spectacle lens experienced by the wearer can be improved.

[0057] Furthermore, the advantage offered by this disclosure is that optical power can be added to a wide range of peripheral vision through diffraction-based additional power. This provides great freedom in designing spectacle lenses intended to alleviate myopia.

[0058] Another advantage this disclosure offers is the high degree of freedom to personalize spectacle lenses for the intended wearer. The refractive and / or diffractive properties of the spectacle lenses can be used to adjust the lens design to the wearer's predetermined characteristics (such as vertex distance and / or biometric characteristics (such as the axial length of the eye)) and / or the wearer's wearing habits.

[0059] Spectrum lenses can have a uniform refractive power extending at least in the central region, peripheral region, and first transition region. Spectrum lenses can optionally have a uniform refractive power across the entire lens surface. Therefore, with respect to refractive power, spectrum lenses can be configured as monofocal lenses. Accordingly, spectrum lenses can be manufactured from a single material having a single refractive index, i.e., without a distribution of different materials with different refractive indices. This can facilitate the manufacture of spectrum lenses. Furthermore, the curvature of the rear surface can be adjusted to achieve a monofocal lens.

[0060] The uniform refractive power can be adjusted to achieve emmetropia in the wearer, where the central region can have zero diffractive additional power.

[0061] Accordingly, the central region can be adjusted to correct the wearer's refractive error using only the refractive power of the spectacle lens. According to this alternative embodiment, no additional diffraction power may be provided in the central region. This allows for reliable correction of the wearer's refractive error in the central region while minimizing possible optical aberrations. Therefore, high image quality can be achieved when refractive power is provided only in the central region, resulting in good wearer satisfaction.

[0062] The peripheral region can have positive diffraction-added power provided by one or more positive diffraction orders. Specifically, the peripheral region can have only positive diffraction-added power provided by one or more positive diffraction orders. This adds a focal shift to the refractive power of the spectacle lens, and thus adds positive power. Therefore, this allows the effective focal length of the peripheral region of the spectacle lens to be shorter compared to the central region, which does not have diffraction-added power. Accordingly, the central region can be adjusted to focus light transmitted through it onto the wearer's retina for emmetropia, while focusing light transmitted through the peripheral region in front of the retina with a shorter focal length. This results in positive defocus for the wearer at the angle of view corresponding to the peripheral region, which may be suitable for slowing the progression of myopia in the wearer. An advantage of this configuration is that the possible longitudinal chromatic aberration of the spectacle lens's refractive power can be at least partially compensated by the diffraction-added power.

[0063] The peripheral region may optionally have positive diffraction-added focal power and negative diffraction-added focal power provided by one or more positive diffraction orders and one or more negative diffraction orders. This may result in the wearer seeing blurred light within the field of view, which may support slowing the progression of myopia and / or at least partially curing myopia.

[0064] The first transition region can be based on bifocal diffraction efficiency, which has non-zero diffraction efficiency in the diffraction order corresponding to the first diffraction-added power and in the diffraction order corresponding to the second diffraction-added power. In other words, the first transition region can have diffraction efficiency that includes diffraction power that is the same as or similar to the first diffraction power of the central region and the second diffraction power of the peripheral region. "Non-zero diffraction efficiency" means that the diffraction efficiency of a particular diffraction order is higher than zero, that is, some diffracted light is diffracted into a particular diffraction order. If the diffraction-added power of the central region or the peripheral region is zero, the corresponding diffraction efficiency of the first transition region can be adjusted to have non-zero diffraction efficiency in the zeroth order diffraction order. For example, if the peripheral region has positive diffraction-added power, the first transition region can have non-zero diffraction efficiency in at least one positive diffraction order that matches the positive diffraction-added power of the peripheral region. This allows for a smooth and gradual adjustment of the diffraction power of the spectacle lens between the central and peripheral regions, and thus can enhance wearer satisfaction.

[0065] The second transition region can be based on bifocal diffraction efficiency, which has non-zero diffraction efficiency in the diffraction order corresponding to the second diffraction-added power and in the zeroth diffraction order. This can be particularly suitable for transferring the diffraction-added power of an eyeglass lens from the first diffraction-added power to the second diffraction-added power in a radially outward direction. The first transition region can be adapted to transfer diffraction efficiency in a radially outward direction from the zeroth diffraction order to one or more positive and / or negative diffraction orders in the peripheral region.

[0066] The first and / or second transition regions may have a radial lattice structure, such as the radial periodicity of a diffraction structure, corresponding to the periodicity of a diffraction structure disposed in the peripheral or central region to provide a first or second diffraction power. When viewed with a square radius, the periodicity of the diffraction structure may be constant in the radial direction. Different diffraction orders may be used to provide the first and second diffraction powers, wherein the second diffraction power differs from the first diffraction power. The diffraction efficiency of the transition region may be bifocal, partially diffracting light into a first-order diffraction order to produce the first diffraction power, and partially diffracting it into a second-order diffraction order to produce the second diffraction power. This can be achieved by providing the diffraction structure in the first and / or second transition regions with a radial periodicity corresponding to the radial periodicity of the diffraction structure providing the first or second diffraction power, while adapting the modulation depth of the diffraction structure. The modulation depth may correspond to the depth of the diffraction structure relative to the base curve of the spectacle lens, which may correspond to the depth of corresponding engraving in the spectacle lens. In other words, the modulation depth can correspond to the extension of the diffraction structure parallel to the optical axis of the spectacle lens and / or parallel to the optical axis of the wearer's eye when the spectacle lens is worn. Depending on the modulation depth, the ratio of light diffracted into different diffraction orders provided by the diffraction structure can be adjusted. The modulation depth of the diffraction structure in the transition region can gradually vary in the radial direction. At the boundary between the first or second transition region and the peripheral region, the diffraction structure of the first or second transition region can each have a modulation depth corresponding to the modulation depth of the diffraction structure in the peripheral region. Similarly, at the boundary between the central region and the first transition region, the diffraction structure of the first transition region can correspond to the modulation depth of the diffraction structure in the central region. In the absence of a diffraction structure in the central region, the modulation depth of the diffraction structure in the first transition region can be adjusted to zero at the boundary between the first transition region and the central region.

[0067] Table 1 below discusses some alternative examples of modulation depths that result in different diffraction efficiencies, but this disclosure is not limited to these examples. These diffraction orders (DOs) of corresponding diffraction efficiencies can be used in the central, peripheral, and / or edge regions to provide corresponding first and second diffraction powers. The modulation depth is indicated based on the design wavelength λ used in the design data for eyeglass lens design, which may correspond to a wavelength of λ = 546.07 nm (as specified in ENISO 7944:1998, as a reference wavelength corresponding to the e-line of green mercury). However, according to other embodiments, different wavelengths, such as 587.6 nm, may be used. The selected design wavelength may optionally depend on different regulations and practices applicable to the eyeglass lens design data.

[0068] Table 1

[0069] 0λ No diffraction, therefore only 0th order DO 0.5λ Level 0 DO accounts for approximately 50%, and Level 1 DO accounts for approximately 50%. 1λ Level 1 DO 1.5λ Level 1 DO is approximately 50% and Level 2 DO is approximately 50%. 2λ Level 2 DO

[0070] As can be seen, adjusting the modulation depth allows tuning of the diffraction orders that primarily contribute to diffraction efficiency. An intermediate modulation depth, corresponding to the average of the gradually changing modulation depth, can be achieved by providing a gradually increasing or decreasing modulation depth to the diffraction structure in the transition region. Negative diffraction orders, and therefore negative diffraction-added power, can be achieved by reversing the baseline of the diffraction profile relative to the corresponding surface of the spectacle lens to which the diffraction structure is applied. The modulation profile of a diffraction structure providing a specific negative diffraction-added power can substantially correspond to a mirror image of the modulation profile of a diffraction structure providing a corresponding positive diffraction-added power.

[0071] According to an optional embodiment, the central region may not have diffraction-added focal power and therefore may not have a diffraction structure, which can be considered as a diffraction structure with a modulation depth of 0λ. The peripheral region may have diffraction focal power achieved by diffracting light primarily into a first-order diffraction order through the diffraction structure, and therefore may have a modulation depth of approximately 1λ. In the edge region, similarly, no diffraction structure may be provided, and therefore a modulation depth of 0λ may be provided. Accordingly, the first peripheral region may be adjusted to have a modulation depth that gradually increases from 0λ to 1λ in the radial direction from the boundary with the central region to the boundary with the peripheral region, wherein the periodicity of the diffraction structure in the first transition region may correspond to the periodicity of the peripheral region. Similarly, the second peripheral region may be adjusted to have a modulation depth that gradually decreases from 1λ to 0λ in the radial direction from the boundary with the peripheral region to the boundary with the edge region, wherein the periodicity of the diffraction structure in the first transition region may correspond to the periodicity of the peripheral region. This allows the first and second peripheral regions to have non-zero diffraction efficiencies in the 0th order DO and 1st order DO, and thus, bifocal features that transfer the first diffraction power to the second diffraction power (and vice versa). The advantage of using lower diffraction orders (such as 1st order OD and 0th order DO) is that potential optical aberrations (such as longitudinal chromatic aberration (LCA)) are less pronounced than when using higher diffraction orders. Therefore, using lower diffraction orders can enhance the optical quality of spectacle lenses.

[0072] The spectacle lens may further include an edge region disposed radially outward of the peripheral region and a second transition region disposed between the peripheral region and the edge region. The edge region may have zero diffraction-added power, and the second transition region may be adapted to adjust the diffraction efficiency from the second diffraction-added power to zero diffraction-added power in a radially outward direction. In particular, the edge region may be adapted to not have a diffraction structure. This reduces manufacturing input because it is not necessary to apply a diffraction structure to the edge region of the spectacle lens. Furthermore, the diffraction pattern of the diffraction structure typically needs to be smaller as the radius of the spectacle lens increases. Therefore, this feature allows for the elimination of the need to provide a fine diffraction structure at the spectacle lens, which can therefore significantly benefit the spectacle lens manufacturing process. Thus, the second transition region can provide a smooth transition between the peripheral region with diffraction-added power provided by the diffraction structure and the edge region without a diffraction structure and therefore with zero effective diffraction-added power. The second transition region may be adapted to transfer the diffraction efficiency from one or more positive diffraction orders and / or negative diffraction orders in the peripheral region to the zeroth order diffraction order in a radially outward direction. Therefore, the spectacle lens design, which includes a first transition region and a second transition region adjacent to the peripheral region, can have a bidigital sinusoidal diffraction profile extending over the first transition region, the peripheral region, and the second peripheral region.

[0073] Depending on the option, the uniform refractive power can be adjusted to provide focus in front of the wearer's retina (i.e., in front of the retina of the wearer's eye), wherein the central region can have a negative diffraction-additional power, such that the combination of uniform refractive power and negative diffraction-additional power in the central region is adjusted to achieve emmetropia in the wearer. In other words, the combination of uniform refractive power and diffraction-additional power in the central region can achieve emmetropia in the wearer. In particular, in this case, the peripheral region can have a diffraction-additional power of zero. The advantage provided by this combination is that the diffraction structure used to provide the diffraction-additional power can be limited to the central region and the first peripheral region. Accordingly, it may not be necessary to provide a diffraction structure in the radially outer regions of the spectacle lens (e.g., in the peripheral region and / or edge region). In particular, it may not be necessary to provide a fine diffraction structure in the radially outer regions of the spectacle lens.

[0074] The first transition region, the peripheral region, and (if present) the edge region and the second transition region may correspond to different viewing angles of a wearer wearing an eyeglass lens manufactured according to the design of any of the preceding claims. Specifically, the different regions may be arranged concentrically on the eyeglass lens. The center point (around which the different regions extend concentrically) may coincide with the viewpoint of the eyeglass lens.

[0075] Diffraction structures can be applied to one or more surfaces of an eyeglass lens, such as the front and / or back surfaces. Alternatively or additionally, the diffraction structure can be applied within the eyeglass lens, i.e., within the body material of the lens. Diffraction structures can be provided by engraving and / or by localized variations in the refractive index of the lens material. Optionally, the diffraction structure can be embedded in at least a birefringence structure and / or a layered structure, which can help provide a smooth and cleanable surface. Alternatively or additionally, diffraction structures can be applied by ion beam etching and / or electronic etching and / or molding and / or thermal reshaping and / or lathe cutting.

[0076] The diffraction structure can be configured with a sinusoidal profile and can have constant periodicity when viewed with a square radius. Alternatively, the diffraction structure can deviate from a sinusoidal profile by having one or more different blaze angles and / or one or more different oscillation profile crest angles. The diffraction structure can extend concentrically around the optical axis of the spectacle lens. Optionally, at least some of the diffraction structures can extend eccentrically relative to the optical axis of the spectacle lens.

[0077] Optionally, the diffraction efficiency of the diffraction structure can vary with the azimuth position at the spectacle lens; that is, the additional diffraction power provided by the diffraction structure may not result in rotationally symmetric defocus and / or blurring. Optionally, rotationally symmetric or asymmetric defocus and / or blurring can be provided to reduce and / or treat myopia. Optionally, the diffraction efficiency can be adjusted and / or customized with respect to its azimuth and / or radial configuration based on the wearer's ocular biometrics. Therefore, the azimuth and / or radial configuration and / or diffraction efficiency of the diffraction structure can depend on at least one of the following parameters: axial length, retinal curvature, corneal curvature measurement power, or Rx.

[0078] Different regions of the spectacle lens may optionally correspond to the following viewing angle ranges, wherein the viewing angle is specified as a half-angle between the envelope of the viewing angle cone and the optical axis of the spectacle lens. The different regions may optionally overlap each other. Table 2 exemplarily indicates the angular ranges of different regions of the spectacle lens according to two different alternative embodiments:

[0079] Table 2

[0080]

[0081] Additionally or alternatively, a data processing apparatus may be provided, comprising a processor configured to perform at least partially the methods described above.

[0082] In other words, a data processing system can be provided, comprising a processor and a storage medium coupled to the processor, wherein the processor is adapted to perform the above-described methods at least in part based on a computer program stored on the storage medium.

[0083] The data processing device or system can be a digital electronic machine that can be programmed to automatically perform sequences of arithmetic or logical operations (computations). These logical operations can be defined at least in part by the methods described above.

[0084] Data processing equipment can be computers. The term "computer" can refer to general-purpose devices such as personal computers (PCs) and mobile devices such as smartphones and tablets. However, the term "computer" is not limited to a single device. Rather, the term "computer" should be interpreted broadly to include all data processing devices configured or adapted to perform the methods described above, either individually or in combination with other (data processing) devices, at least in part. Therefore, the term "computer" can also refer to a group of computers linked together and working together, such as a computer network or computer cluster.

[0085] Data processing devices may include at least one processor or processing element, such as a central processing unit (CPU) (optionally in the form of a microprocessor). Data processing devices may include computer memory, optionally semiconductor memory chips. The processor may be configured to execute a computer program. The computer program may be stored on the computer memory. Data processing devices may include devices that can be configured to connect to one or more peripheral devices (e.g., at least one of the following: input devices (e.g., keyboard, mouse, joystick, etc.), output devices (monitor screen, printer, etc.), and input / output devices that perform both functions (e.g., touchscreen)). Peripheral devices may allow retrieval of information from external sources (such as a computer operator) and support the saving and retrieval of operation results.

[0086] The above description of the method, after necessary modifications, is applicable to data processing devices, and vice versa.

[0087] Additionally or alternatively, a computer program may be provided that includes instructions that, when executed by a computer, cause the computer to perform at least partially the methods described above.

[0088] A computer program can be defined in particular as a sequence or set of instructions provided in a programming language for execution by a computer. A computer program can be considered a software component.

[0089] Computer programs can be provided, in particular, as executable files, and can also be provided in the form of source code (i.e., their human-readable form). The source code may require an additional computer program that can be executed by a computer, since computers typically only execute their native instructions. Therefore, this additional computer program may also be provided, or it may be part of the computer program. However, the computer program may also be provided without such an additional computer program.

[0090] The above descriptions of the methods and data processing equipment are adapted to computer programs with necessary modifications, and vice versa.

[0091] Additionally or alternatively, a computer-readable storage medium may be provided on which the aforementioned computer program is stored at least in part.

[0092] In other words, a computer-readable storage medium may include instructions that, when executed by a computer, cause the computer to perform at least partially the methods described above.

[0093] Computer-readable storage media can be any digital data storage device, such as a USB flash drive, hard disk drive, CD-ROM, SD card, or SSD card.

[0094] The descriptions of the methods, data processing apparatus and computer programs given above are adapted, with necessary modifications, to be applicable to computer-readable storage media and vice versa.

[0095] Additionally or alternatively, a data signal may be provided, on which the aforementioned computer program is carried at least in part.

[0096] In other words, computer programs do not necessarily need to be stored on computer-readable storage media for use by computers; they can also be obtained from the outside via data signals, such as the Internet or other means.

[0097] Those skilled in the art will understand that the features described above, as well as those in the following description and accompanying drawings, are not only disclosed in the explicitly disclosed embodiments and combinations, but also include other technically feasible combinations and isolated features. Hereinafter, several alternative embodiments and specific examples are described with reference to the accompanying drawings, which are used to illustrate this disclosure and not to limit it to the described embodiments.

[0098] Further alternative embodiments will now be described with reference to the accompanying drawings. In the drawings:

[0099] Figure 1 A schematic diagram of a spectacle lens design according to a first alternative embodiment is shown;

[0100] Figure 2A Another alternative embodiment of the eyeglass lens design is shown;

[0101] Figure 2B A graph showing the relationship between the difference vector height of the diffraction structure applied to the spectacle lens and the radial position on the spectacle lens is presented.

[0102] Figure 2C It shows Figure 2A The relationship between the modulus of the optical transfer function of the spectacle lens design and spatial frequency;

[0103] Figure 2D The modulus of the optical transfer function is shown;

[0104] Figure 3 An eyeglass lens design according to another alternative embodiment is shown;

[0105] Figure 4A Another alternative embodiment of the eyeglass lens design is shown;

[0106] Figure 4B A graph showing the relationship between the difference vector height of the diffraction structure applied to the spectacle lens and the radial position on the spectacle lens is presented.

[0107] Figure 4CIt shows Figure 4A The relationship between the modulus of the optical transfer function of the spectacle lens design and spatial frequency;

[0108] Figure 4D The modulus of the optical transfer function is shown;

[0109] Figure 5A Another alternative embodiment of the spectacle lens design according to this disclosure is shown;

[0110] Figure 5B A graph showing the relationship between the difference vector height of the diffraction structure applied to the spectacle lens and the radial position on the spectacle lens is presented.

[0111] Figure 5C The modulus of the optical transfer function is shown;

[0112] Figure 5D The modulus of the optical transfer function is shown;

[0113] Figure 6 A method for manufacturing eyeglass lenses is shown.

[0114] In the accompanying drawings, the same reference numerals are used for corresponding or similar features in different figures.

[0115] Figure 1 A spectacle lens 10 according to a first alternative embodiment is schematically shown, wherein the spectacle lens 10 is provided using spectacle lens design data according to an alternative embodiment of this disclosure. The spectacle lens 10 is shown in conjunction with an eye 16 of a wearer schematically depicting the spectacle lens 10. Light rays 100 and 200 schematically shown indicate light beam paths at different viewing angles.

[0116] The spectacle lens design data is provided for the purpose of manufacturing spectacle lenses 10 relevant to the wearer. The spectacle lens design data is adjusted such that spectacle lens 10 has refractive power and at least a partial diffraction-additional power. Furthermore, spectacle lens 10 is adjusted to provide a central region 12 having a first diffraction-additional power (which may be zero) and is adjusted to achieve emmetropia for the wearer by providing a focal point 102 at the wearer's retina 18. Additionally, spectacle lens 10 provides a peripheral region 14 disposed radially outward of the central region 12, wherein the peripheral region 14 has a second diffraction-additional power and is adjusted to provide a focal point 202 in front of and / or behind the retina 18 of the wearer's eye 16.

[0117] In addition, the spectacle lens 10 further includes a first transition region 20 disposed between the central region 12 and the peripheral region 14, wherein the first transition region 20 is adapted to adjust the diffraction efficiency from a first diffraction additional power to a second diffraction additional power in a radially outward direction.

[0118] The spectacle lens 10 has a uniform refractive power extending at least over the central region 12, the peripheral region 14, and the first transition region 20. The refractive power can be determined by the shape of the rear surface 10a of the spectacle lens 10 and the refractive index of the spectacle lens material. According to the presented alternative embodiment, the uniform refractive power is adjusted to achieve emmetropia for the wearer. The diffraction-added power of the central region 12 is zero. This can be achieved by not providing any diffraction structure in the central region, or by providing a diffraction structure whose diffraction efficiency has a non-zero diffraction-added power only in the zeroth diffraction order. Accordingly, light rays 100 propagating through the central region 12 and reaching the eye 16 at a 0° angle (i.e., parallel to the optical axis 1000 of the spectacle lens) are focused at a focal point 102 at the retina 18.

[0119] The peripheral region 14 has a positive diffraction-added power provided by diffraction structures having non-zero diffraction efficiency in one or more positive diffraction orders. Therefore, the total optical power or effective optical power of the spectacle lens 10 in the peripheral region 14 is derived from a combination of refractive power and the diffraction-added power generated by the diffraction structures disposed in the peripheral region 14. Due to the higher optical power in the peripheral region 14, the focal point of light transmitted through the peripheral region 14 (viewed by the wearer at a non-zero angle) is focused at a shorter focal length, such that the focal point 202 is in front of the retina 18 within the eye 16. Therefore, the wearer will view these rays 200 in a defocused manner. This can be beneficial in slowing the progression of myopia and / or treating myopia in the wearer, while still maintaining emmetropia for rays 100 parallel to the optical axis 1000 and with a small angle.

[0120] Figure 2A Describing the design of eyeglass lenses and Figure 1 Another alternative embodiment with a similar lens design is shown. While many features of this alternative embodiment correspond to... Figure 1 The features of the illustrated embodiment, but which are similar to Figure 1The difference in this embodiment is that its peripheral region 14 does not extend to the edge 10b of the spectacle lens 10, but is limited to a predetermined radial portion of the spectacle lens 10. Furthermore, the spectacle lens 10 further includes an edge region 24 disposed radially outward of the peripheral region 14 and a second transition region 22 disposed between the peripheral region 14 and the edge region 24. The edge region 24 has a diffraction-added power of zero, and the second transition region 22 is adapted to adjust the diffraction efficiency from the second diffraction-added power to a diffraction-added power of zero in a radially outward direction. The diffraction-added power of the peripheral region 14 can be compared with... Figure 1 The peripheral region 14 of the embodiments has the same or similar diffraction additional focal power. Accordingly, the light 200 transmitted through the peripheral region 14 and entering the wearer's eye 16 at a certain angle is focused onto the focal point 202 in front of the retina 18, while the central region 12 is adjusted again to achieve the wearer's emmetropia so that the focal point 102 is achieved at the retina 102. However, according to Figure 2A The embodiments presented herein are similar to those described above. Figure 1 Compared to the previous embodiment, the angular range of the viewing angle covered by the surrounding area 14 is reduced.

[0121] By providing a second transition region 22, a smooth transition from the diffraction-added power of the peripheral region 14 to the zero diffraction-added power of the edge region 24 can be achieved. Therefore, it is unnecessary to provide a diffraction structure in the edge region 24. This facilitates the manufacture of spectacle lenses because diffraction structures typically found in radially outer regions (such as edge region 24) would require fine diffraction structures, which necessitate significant manufacturing inputs. Therefore, limiting the peripheral region 14 to a predetermined angular range (e.g., a 10° angular range) and providing the second transition region 22 and the edge region 24 radially outward allows for reduced manufacturing inputs and, consequently, reduced manufacturing costs.

[0122] Figure 2BA graph schematically illustrates the relationship between the difference vector height (in μm on the vertical axis) of the diffraction structure applied to the spectacle lens 10 and its radial position (in mm on the horizontal axis) on the spectacle lens 10. The difference vector height can correspond to the modulation depth of the diffraction structure. The difference vector height corresponds to the height profile of the diffraction structure relative to the base arc of the spectacle lens 10, which can correspond to the conventional front or rear surface 10a of the spectacle lens 10 without the applied diffraction structure. The brackets below the graph indicate the central region 12, the first transition region 20, the peripheral region 14, the second transition region 22, and the edge region 24. As can be seen, no diffraction structure is applied to the spectacle lens 10 in the central region 12 and the edge region 24. The peripheral region 14 has a diffraction structure with a uniform depth relative to the base arc, which corresponds to the zero line of the graph. The transition regions provide increasing and decreasing depths of the diffraction structure, respectively, providing a smooth transition from zero diffraction-added power in the central region 12 and the edge region 24 to the peripheral region 14 with non-zero diffraction-added power. Due to the increasing and decreasing height profiles of the diffraction structure in the transition regions 20 and 22, the varying diffraction efficiency can vary with radial position. The period length of the diffraction structure can be constant when viewed in terms of the square of the radial position. The diffraction structure of spectacle lens design data can be provided through calculation, which can, for example, use ZEMAX models and UDS to import and analyze a precise parametric prescription of the diffraction profile.

[0123] Figure 2C An example is shown compared to the diffraction limit of 2000. Figure 2A The modulus (in normalized units) of the optical transfer function (OTF) of the spectacle lens design varies with spatial frequency (in periods / mm). The OTF of light propagating through the central region 14 without diffraction structures at a 0° viewing angle is very similar to the OTF 2000 indicating the diffraction limit. This indicates that the optical quality is good and the imaging onto the retina 18 is good for light viewed at a 0° viewing angle. Graphs 2004 and 2006 indicate the OTF of light propagating through the first transition region 20 at a 5° viewing angle (graph 2004) and the OTF of light propagating through the peripheral region 14 at a 10° viewing angle (graph 2006), respectively. These viewing angles correspond to light propagating through the region where diffraction structures are applied to the spectacle lens 10 to provide positive defocus. Accordingly, the OTF at these viewing angles is significantly lower than the OTF 2000 indicating the diffraction limit. Therefore, light viewed from a 10° angle appears strongly out of focus, while light viewed from a 5° angle appears moderately out of focus.

[0124] Figure 2D It shows Figure 2AThe optical transfer function (OTF) modulus (vertical axis, in normalized units) of the spectacle lens is depicted as a function of focal point offset (in mm): the top figure shows the light transmitted through the central region 12 when viewed from a 0° angle, the middle figure shows the light transmitted through the first transition region 20 when viewed from a 5° angle, and the bottom figure shows the light transmitted through the peripheral region 14 when viewed from a 10° angle. As can be seen, the OTF of the light at 0° is at the zeroth diffraction order (0... th In the DO, it basically has a single peak, while in the positive first-order diffraction order and the negative first-order diffraction order (+1) st DO,-1 st At DO), there is essentially no diffraction efficiency. This makes the optical power of the central region essentially correspond to its refractive power, without any additional diffraction-related power. In contrast, at a 5° viewing angle associated with the first transition region 20, the diffraction efficiency is divided such that the OTF is at 0. th DO and at +1 st The peak value is at DO to reduce the diffraction efficiency from 0. th DO transferred to 1 st DO, where 0 th DO is +1 st DO is more prominent. At a 10° view relative to the surrounding area 14, OTF is at +1. st The most prominent peak is found at DO, while at 0... th The peak at DO is not very prominent. This allows for a reliable superposition of the diffraction-added power and the refractive power, thereby achieving the desired focusing of light in front of the retina 18. Therefore, the first transition region 20 can be based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the first diffraction-added power and a non-zero diffraction efficiency in the second diffraction-added power.

[0125] Figure 3 An example is shown based on and referenced Figure 1 The eyeglass lens designs presented and described are similar to alternative embodiments of eyeglass lens designs. However, Figure 3 The eyeglass lens design shown is similar to Figure 1The difference in this embodiment is that the peripheral region is adjusted to provide positive and negative diffraction additional focal power in order to provide positive and negative defocus relative to the retina 18. The peripheral region 14 according to this embodiment has positive and negative diffraction additional focal power provided by one or more positive diffraction orders and one or more negative diffraction orders. The first transition region 20 may be based on bifocal diffraction efficiency, which has a non-zero diffraction efficiency in the first diffraction additional focal power and a non-zero diffraction efficiency in the second diffraction additional focal power. This configuration can produce a blurred visual image of light transmitted through the peripheral region 14 and viewed at an angle of approximately 10°. According to this embodiment, the peripheral region 14 extends to the edge 10b of the spectacle lens 10.

[0126] Figure 4A It presents basically the same as Figure 2A and Figure 3 Another alternative embodiment corresponds to a combination of the alternative embodiments. Accordingly, the peripheral region 14 is adapted to provide both positive and negative diffraction power, and instead of extending to the edge 10b of the spectacle lens 10, it is confined to a predetermined radial range and adjoins a second transition region 22 surrounding the peripheral region 14 in a radially outward direction. This embodiment can provide a blurred visual image of light viewed at an angle of approximately 10°, and can reduce manufacturing costs by avoiding the provision of diffraction structures in the peripheral region 24 located radially outward of the second transition region. The viewing angle range corresponding to different regions of the spectacle lens can be optionally selected according to one of the embodiments presented in Table 2 above.

[0127] The second transition region can be based on a bifocal diffraction efficiency that is non-zero in the second diffraction-added focal length and also non-zero in the zeroth diffraction order. The peripheral region can have zero diffraction-added focal length and may not have any diffraction structures.

[0128] Figure 4B The illustration shows the target based on Figure 4AThe graph presented here illustrates the relationship between the difference vector height (in μm on the vertical axis) of the diffraction structure applied to the spectacle lens and its radial position (in mm) on the spectacle lens. The difference vector height corresponds to the height profile and therefore to the modulation depth of the diffraction structure relative to the base arc of the spectacle lens 10, which may correspond to the conventional front or rear surface 10a of the spectacle lens 10 without the applied diffraction structure. The brackets below the graph indicate the central region 12, the first transition region 20, the peripheral region 14, the second transition region 22, and the edge region 24. As can be seen, no diffraction structure is applied to the spectacle lens 10 in the central region 12 and the edge region 24. The period length can be constant when viewed in terms of the square of the radial position. The diffraction structures in the transition regions 20 and 22 may have a different blaze angle than the diffraction structure in the peripheral region 24. The boundary line (marked with a dashed line) between the peripheral region 14 and the second transition region 22 is located at a radius of 6 mm from the center of the spectacle lens 10. The resulting diffraction profile can be provided with an additional +2D diffraction focal length through the positive diffraction order.

[0129] Figure 4C An example is shown compared to the diffraction limit of 4000. Figure 4A The modulus of the optical transfer function (OTF) of the spectacle lens design (in normalized units) varies with spatial frequency (in periods / mm). The OTF of light propagating through the central region 14 without diffraction structures at a 0° viewing angle (as shown in graph 4002) is very similar to the OTF 4000 indicating the diffraction limit. This indicates that the optical quality is good and the imaging onto the retina 18 is good for light viewed at a 0° viewing angle. Graphs 4004 and 2006 indicate the OTF of light propagating through the first transition region 20 viewed at a 5° viewing angle (graph 4004) and the OTF of light propagating through the peripheral region 14 viewed at viewing angles of 10° to 20° (graph 4006), respectively. These viewing angles correspond to light propagating through the region where diffraction structures are applied to the spectacle lens 10 to provide positive defocus. Accordingly, the OTF at these viewing angles is significantly lower than the OTF 4000 indicating the diffraction limit. Therefore, light viewed from an angle of 5° to approximately 20° (see line 4008) appears as strongly positive and strongly negative defocus, while light viewed from a 5° angle appears as blurred.

[0130] Figure 4D It shows Figure 4AThe relationship between the modulus (vertical axis, in normalized units) of the optical transfer function (OTF) of the spectacle lens and the focal point offset (in mm) is depicted as follows: Curve 4102 is for light transmitted through the central region 12 when viewed from a 0° angle; curve 4104 is for light transmitted through the first transition region 20 when viewed from a 5° angle; and the curve indicated by arrow 4106 is for light transmitted through the peripheral region 14 and the second transition region 22 when viewed from a 10° angle or greater. As can be seen, the OTF of light at 0° is at the zeroth diffraction order (0... th In the DO, it basically has a single peak, while in the positive first-order diffraction order and the negative first-order diffraction order (+1) st DO,-1 st At DO), there is essentially no diffraction efficiency. This makes the optical power of the central region essentially correspond to its refractive power, without any additional diffraction-related power. In contrast, at a 5° viewing angle associated with the first transition region 20, the diffraction efficiency is divided such that the OTF is at 0. th DO and at +1 st DO and -1 st The peak value is at DO to reduce the diffraction efficiency from 0. th DO transferred to +1 st DO and -1 st DO, where 0 th DO is +1 st DO and -1 st DO is more prominent. For larger viewing angles, OTF provides non-zero diffraction efficiency at both the positive and negative diffraction orders to provide associated focus shifts, thereby creating the desired blur for these viewing angles.

[0131] Figure 5A Another alternative embodiment of the spectacle lens design according to this disclosure is depicted. According to this embodiment, a uniform refractive power provides focus in front of the wearer's retina 18 (i.e., within the eye 16 in front of the retina 18). A central region 12 has a negative diffraction-added power, such that the combination of uniform refractive power and negative diffraction-added power in the central region 12 is adjusted to achieve emmetropia for the wearer of the eye 16. A peripheral region 14 has no diffraction-added power and is therefore adapted to provide defocus, which, due to the refractive power of the spectacle lens, focuses light ray 200 transmitted through the peripheral region 14 at a specific angle and reaching the eye 16 in front of the retina 18. Accordingly, the diffraction-added power of the peripheral region 14 is zero. A first transition region 20 disposed between the central region 12 and the peripheral region 14 is adapted to adjust the diffraction efficiency from the first diffraction-added power of the central region 12 to the zero diffraction-added power of the peripheral region 14 in a radially outward direction.

[0132] Figure 5B The illustration shows the target based on Figure 5A The graph presented here shows the relationship between the difference vector height (in μm on the vertical axis) of the diffraction structure applied to the spectacle lens and its radial position (in mm on the horizontal axis) on the spectacle lens 10. The difference vector height corresponds to the height profile and therefore to the modulation depth of the diffraction structure relative to the base arc of the spectacle lens 10, which may correspond to the conventional front surface or conventional rear surface 10a of the spectacle lens 10 without the applied diffraction structure. The brackets below the graph indicate the central region 12, the first transition region 20, and the peripheral region 14. As can be seen, no diffraction structure is applied to the spectacle lens 10 in the peripheral region 14. The first transition region 20 is adapted to gradually weaken the diffraction-added power in the radially outward direction.

[0133] Figure 5C An example is shown compared to the diffraction limit of 5000. Figure 5A The modulus of the optical transfer function (OTF) of the spectacle lens design (in normalized units) varies with spatial frequency (in periods / mm). The OTF of light propagating through the central region 14 without diffraction structure at a 0° viewing angle (shown in graph 5002) is close to the OTF 5000 indicating the diffraction limit. However, the deviation from the diffraction limit 5000 can be more pronounced compared to the embodiment described above which does not have a diffraction structure applied to the central region 12. Graphs 5004 and 5006 indicate the OTF of light propagating through the first transition region 20 when viewed at a 10° viewing angle (graph 5004) and the OTF of light propagating through the peripheral region 14 when viewed at a 20° viewing angle (graph 5006), respectively. Accordingly, the OTF at these viewing angles is significantly lower than the OTF 5000 indicating the diffraction limit. Therefore, light viewed from a 20° angle appears strongly out of focus, while light viewed from a 10° angle appears moderately out of focus.

[0134] Figure 5D It shows Figure 5A The relationship between the modulus (vertical axis, in normalized units) of the optical transfer function (OTF) of the spectacle lens and the focal point offset (in mm) is depicted as follows: the top graph shows the light transmitted through the central region 12 when viewed from a 0° angle, the middle graph shows the light transmitted through the first transition region 20 when viewed from a 10° angle, and the bottom graph shows the light transmitted through the peripheral region 14 when viewed from a 20° angle. As can be seen, the OTF of the light at 0° is -1... st Diffraction order (-1) st In the DO, it basically has a single peak, while in the positive first-order diffraction order and the negative first-order diffraction order (-2), it has a single peak. nd DO,0 thAt DO), there is essentially no diffraction efficiency. This makes the optical power of the central region essentially correspond to the combination of its refractive power and the additional diffraction power provided in the central region 12. In contrast, at a 10° viewing angle associated with the first transition region 20, the diffraction efficiency is divided such that the OTF is 0. th DO and at -1 st The peak values ​​at DO are essentially equal, allowing the diffraction efficiency to be adjusted from -1. st DO transferred to 0 th DO. According to this alternative embodiment, at a 20° viewing angle associated with the surrounding area 14, the OTF is only at 0. th A peak is provided at DO. This allows for a reliable superposition of the diffraction-added power and the refractive power in the central region 12 to achieve emmetropia, while simultaneously achieving the desired focusing of light in front of the retina 18 through the peripheral region for a larger viewing angle. The first transition region 20 can be based on bifocal diffraction efficiency, which is based on the first diffraction-added power (-1) st It has a non-zero diffraction efficiency in DO and an additional focal length in the second diffraction (0) th The DO exhibits non-zero diffraction efficiency. From -1 st DO to 0 th The shift of DO causes a focus shift, thereby compensating for the additional refractive power in the central region and avoiding such compensation in the peripheral region 14.

[0135] In the embodiments presented above, the first transition region, the peripheral region, and (if present) the edge region and the second transition region correspond to different viewing angles of the wearer wearing the spectacle lens 10 manufactured according to the spectacle lens design of any of the preceding claims. The associated viewing angle range of each region may vary between the various embodiments.

[0136] Figure 6 A method 600 for manufacturing spectacle lens 10 is illustrated schematically. Method 600 includes a step 602 of providing spectacle lens design data according to an embodiment of the present disclosure and a step 604 of manufacturing spectacle lens 10 based on the provided spectacle lens design data.

[0137] This disclosure also includes, but is not limited to, the following optional terms:

[0138] Clause 1. A spectacle lens 10 associated with a wearer, the spectacle lens having refractive power and at least a partial diffraction-additional power, and being provided with:

[0139] - Central region 12, which has a first diffraction-additional focal power and is adjusted to achieve emmetropia for the wearer; and

[0140] - Peripheral region 14, which is arranged radially outward of central region 12, wherein peripheral region 14 has a second diffraction additional focal power and is adjusted to provide focal point 202 in at least one of the front of or behind the wearer's retina 18.

[0141] The design data for the eyeglass lens was adjusted to further enable the eyeglass lens 10 to have:

[0142] - A first transition region 20 is arranged between the central region 12 and the peripheral region 14, wherein the first transition region 20 is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction.

[0143] Clause 2. The spectacle lens design data according to Clause 1, wherein the spectacle lens 10 has a uniform refractive power extending at least over the central region 12, the peripheral region 14 and the first transition region 20.

[0144] Clause 3. The spectacle lens design data according to Clause 2, wherein the uniform refractive power is adjusted to achieve emmetropia for the wearer, and wherein the central region 12 has zero diffractive additional power.

[0145] Clause 4. Spectacle lens design data according to any one of the preceding clauses, wherein the peripheral region 14 has positive diffraction additional power provided by one or more positive diffraction orders.

[0146] Clause 5. Spectacular lens design data according to any one of Clauses 1 or 3, wherein the peripheral region 14 has positive diffraction additional power and negative diffraction additional power provided by one or more positive diffraction orders and one or more negative diffraction orders.

[0147] Clause 6. Spectacular lens design data according to any one of the preceding clauses, wherein the first transition region 20 is based on bifocal diffraction efficiency having a non-zero diffraction efficiency in a first diffraction-added power and a non-zero diffraction efficiency in a second diffraction-added power.

[0148] Clause 7. The spectacle lens design data according to any one of the preceding clauses further includes: an edge region 24 and a second transition region 22, the edge region being arranged radially outward of the peripheral region 14, the second transition region being arranged between the peripheral region 14 and the edge region 24, wherein the edge region 24 has a diffraction additional power of zero, and the second transition region 22 is adapted to adjust the diffraction efficiency from the second diffraction additional power to a diffraction additional power of zero in a radially outward direction.

[0149] Clause 8. The spectacle lens design data according to Clause 7, wherein the second transition region 22 is based on bifocal diffraction efficiency, which has non-zero diffraction efficiency in the diffraction order corresponding to the second diffraction additional power and in the zeroth order diffraction order.

[0150] Clause 9. The spectacle lens design data according to Clause 2, wherein the uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and wherein the central region 12 has a negative diffraction additional power, such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted to achieve emmetropia in the wearer.

[0151] Clause 10. The spectacle lens design data as described in Clause 9, wherein the diffraction-added power of the peripheral region 14 is zero.

[0152] Clause 11. Spectacle lens design data according to any one of the preceding clauses, wherein the first transition region 20, the peripheral region 14, and the edge region 24 and the second transition region 22, in cases subject to Clause 7 or Clause 8, correspond to different viewing angles of the wearer wearing spectacle lenses manufactured by means of spectacle lens design according to any one of the preceding clauses.

[0153] Clause 12. A dataset in the form of a computer-readable data signal, the dataset comprising at least one of the following types of data:

[0154] i is configured to manufacture a virtual representation of the spectacle lens 10 according to any one of the foregoing clauses;

[0155] ii contains data for controlling one or more manufacturing machines to manufacture spectacle lenses 10 in accordance with any of the preceding clauses.

[0156] Clause 13. A computer-readable storage medium on which a dataset according to Clause 12 is stored.

[0157] Clause 14. A method 600, configured to generate spectacle lens design data for spectacle lens 10 via a computer device, the spectacle lens design data being adjusted such that spectacle lens 10 has refractive power and at least a partial diffraction-additional power and is provided with:

[0158] +Central region 12, which has a first diffraction-additional focal power and is adjusted to achieve emmetropia for the wearer; and

[0159] + Peripheral region 14, which is arranged radially outward of central region 12, wherein peripheral region 14 has a second diffraction additional focal power and is adjusted to provide focal point 202 in at least one of the front of or behind the wearer's retina 18.

[0160] The design data for the eyeglass lens was adjusted to further enable the eyeglass lens 10 to have:

[0161] + A first transition region 20 is arranged between the central region 12 and the peripheral region 14, wherein the first transition region 20 is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction.

[0162] Clause 15. The method 600 according to Clause 14, further configured to use the spectacle lens design data to manufacture spectacle lens 10.

[0163] List of reference numerals

[0164] 10. Eyeglass lenses

[0165] 10a Back surface of spectacle lens

[0166] 10b The edge of the eyeglass lens

[0167] 12 Central Area

[0168] 14 Surrounding Areas

[0169] 16 Eyes

[0170] 18. Retina

[0171] 20 First Transition Zone

[0172] 22 Second Transition Zone

[0173] 24. Edge Area

[0174] 100 Light rays propagate through the central area at zero angle.

[0175] 102 The focal point of the light ray 100

[0176] 200 Light rays propagate through the surrounding area at a non-zero angle.

[0177] 202 The focal point of the light beam 200

[0178] 600 Methods for manufacturing eyeglass lenses

[0179] 602-604 Method Steps

[0180] 1000 Optical axis of spectacle lenses

[0181] Optical transfer function curves from 2000 to 2006

[0182] Graph of optical transfer function from 4000 to 4006

[0183] Relationship between the modulus of 4102–4106 OTF and focal point shift

[0184] Graph of optical transfer function from 5000 to 5006

Claims

1. A spectacle lens (10) associated with a wearer, the spectacle lens (10) having refractive power and at least a partial diffraction-additional power and providing: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The eyeglass lens (10) further demonstrates: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14), and the first transition region (20), and The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and the central region (12) has a negative diffraction additional power such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted for the wearer's emmetropia. Its features are, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

2. A spectacle lens (10) associated with a wearer, the spectacle lens (10) having refractive power and at least a partial diffraction-additional power and providing: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The eyeglass lens (10) further demonstrates: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14), and the first transition region (20), and The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and the central region (12) has a negative diffraction additional power such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted for the wearer's emmetropia. Its features are, The central region (12), the peripheral region (14) and the first transition region (20) are arranged concentrically on the spectacle lens (10), or the peripheral region (14) and the first transition region (20) extend around the central region (12) in a non-concentric manner.

3. The spectacle lens according to claim 1 or 2, wherein, The surrounding area (14) has positive diffraction additional focal length provided by one or more positive diffraction orders.

4. The spectacle lens according to claim 2, wherein, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

5. The spectacle lens according to any one of the preceding claims, wherein, The first transition region (20) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the first diffraction additional focal length and a non-zero diffraction efficiency in the second diffraction additional focal length.

6. The spectacle lens according to any one of the preceding claims, further comprising: An edge region (24) and a second transition region (22) are provided, the edge region being arranged radially outward of the peripheral region (14) and the second transition region being arranged between the peripheral region (14) and the edge region (24), wherein the edge region (24) has a diffraction additional focal length of zero and the second transition region (22) is adapted to adjust the diffraction efficiency from the second diffraction additional focal length to a diffraction additional focal length of zero in a radially outward direction.

7. The spectacle lens according to claim 5, wherein, The second transition region (22) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the diffraction order corresponding to the second diffraction additional focal length and in the zeroth order diffraction order.

8. The spectacle lens according to any one of the preceding claims, wherein, The first transition region (20), the peripheral region (14), and, in the case of claim 6 or 7, the edge region (24) and the second transition region (22) correspond to different viewing angles of the wearer wearing the spectacle lens according to any one of the preceding claims.

9. A method (600) for manufacturing an spectacle lens (10), comprising the steps of generating spectacle lens design data for the spectacle lens (10) via a computer device and manufacturing the spectacle lens (10) using the spectacle lens design data, the spectacle lens design data being adjusted such that the spectacle lens (10) has a refractive power and at least a partial diffraction additional power and provides: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14), and the first transition region (20), and The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and the central region (12) has a negative diffraction additional power such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted for the wearer's emmetropia. Its features are, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

10. A method (600) for manufacturing an spectacle lens (10), comprising the steps of generating spectacle lens design data for the spectacle lens (10) via a computer device and manufacturing the spectacle lens (10) using the spectacle lens design data, the spectacle lens design data being adjusted such that the spectacle lens (10) has a refractive power and at least a partial diffraction-additional power and provides: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14), and the first transition region (20), and The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and the central region (12) has a negative diffraction additional power such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted for the wearer's emmetropia. Its features are, The central region (12), the peripheral region (14) and the first transition region (20) are arranged concentrically on the spectacle lens (10), or the peripheral region (14) and the first transition region (20) extend around the central region (12) in a non-concentric manner.

11. A spectacle lens (10) associated with a wearer, the spectacle lens (10) having refractive power and at least a partial diffraction-additional power and providing: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The eyeglass lens (10) further demonstrates: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). Its features are, The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The surrounding region (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

12. The spectacle lens according to claim 11, wherein, The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14) and the first transition region (20).

13. The spectacle lens according to claim 11 or 12, wherein, The first transition region (20) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the first diffraction additional focal length and a non-zero diffraction efficiency in the second diffraction additional focal length.

14. The spectacle lens according to any one of claims 11 to 13, further comprising: An edge region (24) and a second transition region (22) are provided, the edge region being arranged radially outward of the peripheral region (14) and the second transition region being arranged between the peripheral region (14) and the edge region (24), wherein the edge region (24) has a diffraction additional focal length of zero and the second transition region (22) is adapted to adjust the diffraction efficiency from the second diffraction additional focal length to a diffraction additional focal length of zero in a radially outward direction.

15. The spectacle lens according to claim 14, wherein, The second transition region (22) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the diffraction order corresponding to the second diffraction additional focal length and in the zeroth order diffraction order.

16. The spectacle lens according to claim 12, wherein, The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and wherein the central region (12) has a negative diffraction additional power, such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted to achieve emmetropia in the wearer.

17. The spectacle lens according to any one of claims 11 to 16, wherein, The first transition region (20), the peripheral region (14), and, in the case of claim 16, the edge region (24) and the second transition region (22) correspond to different viewing angles of the wearer wearing the spectacle lens according to any one of claims 11 to 16.

18. A method (600) for manufacturing an spectacle lens (10), comprising the steps of generating spectacle lens design data for the spectacle lens (10) via a computer device and manufacturing the spectacle lens (10) using the spectacle lens design data, the spectacle lens design data being adjusted such that the spectacle lens (10) has a refractive power and at least a partial diffraction additional power and provides: - A central region (12) having a first diffraction-additional focal power and adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). Its features are, The first transition region (20) is adapted to adjust the diffraction efficiency from the first diffraction additional focal length to the second diffraction additional focal length in the radially outward direction. The surrounding region (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

19. A spectacle lens (10) associated with a wearer, the spectacle lens having refractive power and at least a partial diffraction-additional power and providing: - A central region (12) having a first diffraction additional power of zero and being adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the zero first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction, and The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14) and the first transition region (20), and the uniform refractive power is adjusted for the wearer's emmetropia. Its features are, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

20. A spectacle lens (10) associated with a wearer, the spectacle lens having refractive power and at least a partial diffraction-additional power and providing: - A central region (12) having a first diffraction additional power of zero and being adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The eyeglass lens (10) further demonstrates: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the zero first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction, and The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14) and the first transition region (20), and the uniform refractive power is adjusted for the wearer's emmetropia. Its features are, The central region (12), the peripheral region (14) and the first transition region (20) are arranged concentrically on the spectacle lens (10), or the peripheral region (14) and the first transition region (20) extend around the central region (12) in a non-concentric manner.

21. The spectacle lens according to claim 19 or 20, wherein, The surrounding area (14) has positive diffraction additional focal length provided by one or more positive diffraction orders.

22. The spectacle lens according to claim 20, wherein, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

23. The spectacle lens according to any one of claims 19 to 22, wherein, The first transition region (20) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the first diffraction additional focal length and a non-zero diffraction efficiency in the second diffraction additional focal length.

24. The spectacle lens according to any one of claims 19 to 23, further comprising: An edge region (24) and a second transition region (22) are provided, the edge region being arranged radially outward of the peripheral region (14) and the second transition region being arranged between the peripheral region (14) and the edge region (24), wherein the edge region (24) has a diffraction additional focal length of zero and the second transition region (22) is adapted to adjust the diffraction efficiency from the second diffraction additional focal length to a diffraction additional focal length of zero in a radially outward direction.

25. The spectacle lens according to claim 24, wherein, The second transition region (22) is based on a bifocal diffraction efficiency that has a non-zero diffraction efficiency in the diffraction order corresponding to the second diffraction additional focal length and in the zeroth order diffraction order.

26. The spectacle lens according to any one of claims 19 to 25, wherein, The uniform refractive power is adjusted to provide a focal point in front of the wearer's retina, and wherein the central region (12) has a negative diffraction additional power, such that the combination of the uniform refractive power and the negative diffraction additional power in the central region is adjusted for the wearer's emmetropia.

27. The spectacle lens according to any one of claims 19 to 26, wherein, The first transition region (20), the peripheral region (14), and, in cases dependent on claim 24 or 25, the edge region (24) and the second transition region (22) correspond to different viewing angles of the wearer wearing the spectacle lens according to any one of claims 19 to 26.

28. A method (600) for manufacturing an spectacle lens (10), comprising the steps of generating spectacle lens design data for the spectacle lens (10) via a computer device and manufacturing the spectacle lens (10) using the spectacle lens design data, the spectacle lens design data being adjusted such that the spectacle lens (10) has a refractive power and at least a partial diffraction additional power and provides: - A central region (12) having a first diffraction additional power of zero and being adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the zero first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction, and The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14) and the first transition region (20), and the uniform refractive power is adjusted for the wearer's emmetropia. Its features are, The surrounding area (14) has positive diffraction additional focal length and negative diffraction additional focal length provided by one or more positive diffraction orders and one or more negative diffraction orders.

29. A method (600) for manufacturing an spectacle lens (10), comprising the steps of generating spectacle lens design data for the spectacle lens (10) via a computer device and manufacturing the spectacle lens (10) using the spectacle lens design data, the spectacle lens design data being adjusted such that the spectacle lens (10) has a refractive power and at least a partial diffraction additional power and provides: - A central region (12) having a first diffraction additional power of zero and being adjusted to enable the wearer to achieve emmetropia by providing a focal point (102) at the wearer's retina (18); and - A peripheral area (14) is arranged radially outside the central area (12), wherein, The peripheral region (14) has a second diffraction additional focal power and is adjusted to provide a focal point (202) in at least one of the front of the wearer's retina (18) or the back of the wearer's retina (18). The design data for the eyeglass lens was adjusted to further demonstrate that the eyeglass lens (10) exhibits: - A first transition area (20) is arranged between the central area (12) and the surrounding area (14). The first transition region (20) is adapted to adjust the diffraction efficiency from the zero first diffraction additional focal length to the second diffraction additional focal length in a radially outward direction, and The spectacle lens (10) has a uniform refractive power extending at least over the central region (12), the peripheral region (14) and the first transition region (20), and the uniform refractive power is adjusted for the wearer's emmetropia. Its features are, The central region (12), the peripheral region (14) and the first transition region (20) are arranged concentrically on the spectacle lens (10), or the peripheral region (14) and the first transition region (20) extend around the central region (12) in a non-concentric manner.

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