Lens

Abstract

The invention discloses a lens design method, and the method comprises the steps: taking the optical center of a lens body as a circle center, and enabling the lens body to at least comprise an optical center region and a first defocus region; wherein the first out-of-focus area is located in an area which takes the optical center as a circle center and has a radius value of 6-26 mm; a first defocusing element is arranged in the first defocusing area, and the ratio of the area occupied by the first defocusing element to the area of the first defocusing area is larger than or equal to 40% and smaller than or equal to 80%.

Description

Technical Field

[0001] This application relates to the field of optometry technology, and in particular to a lens design method, a lens, a storage medium, and a computer program product. Background Technology

[0002] Currently, refractive errors, including myopia and hyperopia, severely affect a user's vision. To mitigate the impact of refractive errors, users typically wear appropriate glasses to ensure that the image of objects falls accurately on the retina. A commonly used control technique is pre-retinal defocusing, which, for example, uses myopia control glasses to control the focal point of objects in front of the retina, thus slowing down the growth of the eye's axial length and reducing the likelihood of myopia progression.

[0003] However, the lens structure of existing protective glasses is relatively simple, resulting in limited protection efficiency and inability to effectively protect the user's eyesight. Enriching the variety of protective glasses has become an urgent technical problem to be solved. Summary of the Invention

[0004] To address the aforementioned technical problems, this application aims to provide a lens that solves the problem of the current lens design being relatively simple, proposes a lens that enriches the types of vision correction glasses, and achieves effective control of refractive errors.

[0005] The technical solution of this application is implemented as follows: This application provides a lens, the lens comprising: a lens body; wherein: With the optical center of the lens body as the center, the lens body includes at least: an optical center region and a first defocus region; wherein: The first defocused area is located within a region with a radius of 6 mm to 26 mm centered on the optical center; A first defocusing element is provided in the first defocusing area, and the ratio between the area occupied by the first defocusing element and the area of ​​the first defocusing area is greater than or equal to 40% and less than or equal to 80%.

[0006] Optionally, the width of the first defocused area is greater than or equal to 2.2 mm and less than or equal to 10 mm.

[0007] Optionally, the first defocused area is distributed according to a pattern, which includes one or more of the following: fan-shaped, ring-shaped, triangle-shaped, polygonal, and irregular shapes.

[0008] Optionally, a second defocusing element, or a second defocusing element and a third defocusing element, may be provided in the first defocusing area; wherein the sizes of the first defocusing element, the second defocusing element, and the third defocusing element are different.

[0009] Optionally, the diameter of the first defocusing element is greater than or equal to 2.2 mm and less than or equal to 5 mm; The diameter of the second defocusing element is greater than or equal to 1 mm and less than or equal to 2.2 mm; The diameter of the third defocusing element is greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0010] Optionally, the radius of curvature of the first defocusing element, the second defocusing element, and the third defocusing element is greater than or equal to 0.573 mm and less than or equal to 173.63 mm.

[0011] The radius of curvature of the first defocusing element ranges from 30.26 mm to 173.63 mm; The radius of curvature of the second defocusing element ranges from 0.573 mm to 6.95 mm; The radius of curvature of the third defocusing element ranges from 6.26 mm to 33.62 mm.

[0012] Optionally, when the third defocusing element is provided in the first defocusing area, the third defocusing element is positioned with the first defocusing element as the center.

[0013] Optionally, the third defocus unit may be configured in one or more of the following forms: Circle, regular hexagon, ellipse, shell shape, irregular shape, sector shape, randomly distributed shape, dot shape, line shape.

[0014] Optionally, when the first defocus element is disposed within the first defocus area, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed.

[0015] Optionally, when the shape of the optical center region is shell-shaped, in the first direction parallel to the line connecting the user's two eyes, the longest distance of the optical center region is greater than or equal to 6 mm and less than or equal to 13 mm. In a second direction perpendicular to the first direction, the longest distance of the optical center region is greater than or equal to 5 mm and less than or equal to 11 mm.

[0016] Optionally, in a first direction parallel to the line connecting the user's two eyes, the number of the first defocusing elements is greater than the number of the first defocusing elements in the second direction; wherein, the first direction is perpendicular to the second direction.

[0017] Optionally, when the second defocusing element is disposed within the first defocusing area, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed.

[0018] Optionally, the shapes of the first defocusing element, the second defocusing element, and the third defocusing element are one or more of the following: circular, regular polygon, irregular polygon, or complex surface.

[0019] Optionally, the lens body further includes: a second defocus region; wherein: A fourth defocusing element is provided on the second defocusing area, and the fourth defocusing element is at least the second defocusing element.

[0020] This application provides a lens, including a lens body. With the optical center of the lens body as the center, the lens body includes at least an optical center region and a first defocus region. The first defocus region is located within a region with a radius of 6 mm to 26 mm centered on the optical center. A first defocus element is disposed within the first defocus region. The ratio between the area occupied by the first defocus element and the area of ​​the first defocus region is greater than or equal to 40% and less than or equal to 80%. Thus, by setting a first defocus region within a region with a radius of 6 mm to 26 mm centered on the optical center of the lens body, and by placing a first defocus element occupying a proportion greater than or equal to 40% and less than or equal to 80% within the first defocus region, a defocus control glasses design is achieved. This solves the problem of the current relatively simple lens design, enriches the types of control glasses, and achieves effective control of refractive errors. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a lens region distribution structure provided in an embodiment of this application; Figure 2 A schematic diagram of a lens structure provided in an embodiment of this application; Figure 3 A schematic diagram of a lens structure provided in this application embodiment. Figure 1 ; Figure 4 A schematic diagram of a lens structure provided in this application embodiment. Figure 2 ; Figure 5A schematic diagram of a lens structure provided in this application embodiment. Figure 3 . Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0023] An embodiment of this application provides a lens, referring to... Figure 1 As shown, the lens includes: a lens body 1; wherein: With the optical center of the lens body as the center, the lens body includes at least: an optical center region 11 and a first defocus region 12; wherein: The first defocus area is located within a radius of 6 mm to 26 mm centered on the optical center; A first defocusing element is provided in the first defocusing area. The ratio between the area occupied by the first defocusing element and the area of ​​the first defocusing area is greater than or equal to 40% and less than or equal to 80%.

[0024] In this embodiment, when designing the lens, the lens body is divided into at least two regions: an optical center region and a first defocus region. The first defocus region is defined as a radius area of ​​6 mm to 26 mm centered on the optical center within the lens body. Within the first defocus region, a certain number of first defocus elements are provided. The number of these elements must ensure that the ratio of the area occupied by each first defocus element within the first defocus region to the total area of ​​the first defocus region is between 40% and 80%, with the specific ratio determined by the actual application scenario.

[0025] It should be noted that when the radius of the lens exceeds 50 mm, the area of ​​the lens larger than 50 mm is the peripheral area. The peripheral area may not have a diopter, but a diopter can also be set according to the actual situation. The specific decision can be made based on the actual situation, and no specific limitation is made here.

[0026] The first defocusing element is used to scatter or refract light entering the eye, causing the image to be slightly blurred on the retina, thereby stimulating the eye's accommodation mechanism and achieving the purpose of preventing and controlling myopia.

[0027] Based on the foregoing embodiments, in other embodiments of this application, the width of the first defocused region is greater than or equal to 2.2 mm and less than or equal to 10 mm.

[0028] In this embodiment of the application, the width of the first defocus area is set in the range of 2.2 mm to 10 mm, depending on the actual situation of the user's eyes.

[0029] For example, within a radius of 6 mm to 26 mm centered on the optical center of the lens body, a first defocus area with a width of 2.2 mm, 5 mm, 6 mm, 10 mm, or 20 mm is set.

[0030] To ensure the continuity and effectiveness of the dynamic defocus effect in vision, while avoiding the problem of weakened vision correction due to excessive width or insignificant defocus effect due to excessive narrowness.

[0031] Based on the foregoing embodiments, in other embodiments of this application, a second defocusing element, or a second defocusing element and a third defocusing element, are further provided in the first defocusing area; wherein the sizes of the first defocusing element, the second defocusing element, and the third defocusing element are different.

[0032] In some application scenarios, in addition to the first defocusing element, a second defocusing element can also be set in the first defocusing area. During this process, the sizes of the first and second defocusing elements are different. In other application scenarios, in addition to the first defocusing element, a second and a third defocusing element can also be set in the first defocusing area. During this process, the sizes of the first, second, and third defocusing elements are different.

[0033] In this way, the second and third defocus elements supplement the first defocus element within the first defocus region. Because the first, second, and third defocus elements are of different sizes, multiple different defocus structures can be formed within the first defocus region to achieve more complex visual training effects. Furthermore, multiple different defocus stimuli can be provided to the eye within the same region, helping to improve the user's retina's ability to adapt to blurred signals, thus slowing myopia progression or alleviating visual fatigue.

[0034] Based on the foregoing embodiments, in other embodiments of this application, the diameter of the first defocusing element is greater than or equal to 2.2 mm and less than or equal to 5 mm; the diameter of the second defocusing element is greater than or equal to 1 mm and less than or equal to 2.2 mm; and the diameter of the third defocusing element is greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0035] In the embodiments of this application, compared with the second and third defocusing elements, the first defocusing element has the largest element size, which helps to improve the manufacturing accuracy and stability of the first defocusing element.

[0036] The second defocusing element is the size of the three defocusing elements, which is appropriate for the size of the defocusing element. It is neither too dense to cause light interference, nor too sparse to affect the defocusing effect.

[0037] The third defocus element is the smallest of the three types. It can be used for fine-tuning or localized defocusing. Its small size facilitates placement within complex optical structures, making it suitable for precise adjustment of defocus intensity and applicable to personalized vision correction programs.

[0038] In this way, by arranging the first and second defocusing elements according to requirements, or by arranging the first, second, and third defocusing elements according to actual needs, more precise defocus control can be achieved, ensuring the lens's control effectiveness.

[0039] Based on the foregoing embodiments, in other embodiments of this application, the radii of curvature of the first defocus element, the second defocus element, and the third defocus element are greater than or equal to 0.573 mm and less than or equal to 173.63 mm.

[0040] In this embodiment, the radius of curvature is a measure of the curvature of the surfaces of the first, second, and third defocusing elements, used to describe their optical performance. A larger radius of curvature means that the surfaces of the first, second, and third defocusing elements are smoother, while a smaller radius of curvature indicates that the surfaces of the first, second, and third defocusing elements have more pronounced unevenness.

[0041] The radii of curvature of the first, second, and third defocusing elements are between 27.75 mm and 173.63 mm, which ensures that the first, second, and third defocusing elements can adjust the diopter while maintaining structural stability and manufacturing feasibility.

[0042] The focal lengths of the first, second, and third defocusing elements can be the same or different. In some applications, the focal lengths are arranged from highest to lowest as follows: the focal length of the second defocusing element can be greater than that of the third defocusing element, and the focal length of the third defocusing element can be greater than that of the first defocusing element.

[0043] In some applications, the absolute power of the second defocusing element ranges from 3.5D to 12D; the absolute power of the third defocusing element ranges from 2D to 6D; and the absolute power of the first defocusing element ranges from 1D to 3.5D. In other applications, the absolute power of the second defocusing element ranges from 4.5D to 8D; the absolute power of the third defocusing element ranges from 3.5D to 6D; and the absolute power of the first defocusing element ranges from 2D to 3.5D. It should be noted that the above absolute power ranges typically include two endpoints.

[0044] In this way, by reasonably setting the curvature radius range of the first, second, and third defocusing elements, the visual correction effect can be optimized while ensuring the user's wearing comfort.

[0045] Based on the foregoing embodiments, in other embodiments of this application, the radius of curvature of the first defocusing element ranges from 30.26 mm to 173.63 mm; the radius of curvature of the second defocusing element ranges from 0.573 mm to 6.95 mm; and the radius of curvature of the third defocusing element ranges from 6.26 mm to 33.62 mm.

[0046] Based on the foregoing embodiments, in other embodiments of this application, when a third defocusing element is provided in the first defocusing area, the third defocusing element is positioned with the first defocusing element as the center.

[0047] In this embodiment of the application, when the defocusing element in the first defocusing area is further provided by a third defocusing element, the setting requirement of the third defocusing element can be that it is set with the first defocusing element as the center. It is mainly used to arrange defocusing elements in the blank area around the first defocusing element, so as to reduce the discomfort of the user's eyes when there is a large blank area near the first defocusing element.

[0048] Based on the foregoing embodiments, in other embodiments of this application, the third defocusing unit may be configured in one or more of the following forms: Circle, regular hexagon, ellipse, shell shape, irregular shape, sector shape, randomly distributed shape, dot shape, line shape.

[0049] In this embodiment, the third defocus unit can be set around the first defocus element in one or more combinations of shapes such as circles, regular hexagons, ellipses, shells, irregular shapes, fan shapes, randomly distributed shapes, dots, and lines. That is, the third defocus element can be set in regular or irregular shapes, dots, or lines. Specifically, the shapes can be set in regions or form a ring structure centered on the corresponding first defocus element, depending on the actual application scenario; no specific limitation is made here. The lines can be straight lines, curves, wavy lines, etc.

[0050] For example, with the first defocus unit as the center, the third defocus element is arranged in a circle around it, or with the first defocus unit as the center, the third defocus element is arranged in a blank area near the first defocus unit at certain intervals to obtain a random distribution shape.

[0051] Based on the foregoing embodiments, in other embodiments of this application, when the first defocus element is disposed within the first defocus area, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed.

[0052] Based on the foregoing embodiments, in other embodiments of this application, the first defocused area is distributed according to a pattern, which includes one or more of the following: fan-shaped, ring-shaped, triangle-shaped, polygonal, and irregular shapes.

[0053] Based on the foregoing embodiments, in other embodiments of this application, the shape of the optical center region is one of the following shapes: circular, regular hexagonal, elliptical, shell-shaped, or irregular.

[0054] Based on the foregoing embodiments, in other embodiments of this application, when the shape of the optical center region is shell-shaped, the longest distance of the optical center region in the first direction parallel to the line connecting the user's two eyes is greater than or equal to 6 mm and less than or equal to 13 mm. In the second direction perpendicular to the first direction, the longest distance of the optical center region is greater than or equal to 5 mm and less than or equal to 11 mm.

[0055] In this embodiment of the application, when the shape of the optical center region is shell-shaped, the longest distance of the optical center region in the first direction parallel to the line connecting the user's two eyes is greater than or equal to 6 mm and less than or equal to 13 mm, so that it can cover the user's visual axis movement range in the horizontal direction, thereby improving wearing comfort and visual clarity.

[0056] In the second direction perpendicular to the first direction, the longest distance of the optical center area is greater than or equal to 5 mm and less than 11 mm, which can ensure good optical characteristics of the lens when the user's eyes look up and down, and avoid image distortion or blurring caused by exceeding the optical center area.

[0057] Based on the foregoing embodiments, in other embodiments of this application, the number of first defocusing elements provided in a first direction parallel to the line connecting the user's two eyes is greater than the number of first defocusing elements provided in a second direction; wherein, the first direction is perpendicular to the second direction.

[0058] In this embodiment of the application, in order to ensure better user comfort in the left-right direction of the user's eyes, the number of first defocusing elements in the first direction is greater than the number of first defocusing elements in the second direction.

[0059] Based on the foregoing embodiments, in other embodiments of this application, the diopter accommodation of the first defocus element, the second defocus element, and the third defocus element is different.

[0060] In this embodiment of the application, when setting the refractive power of the first defocus element, the second defocus element and the third defocus element, the refractive accommodation of the three elements is different, that is, the refractive power of the first defocus element, the second defocus element and the third defocus element are different. In this way, different levels of visual accommodation can be provided to the user in the same area at the same time, which enhances the stimulation of the user's eyes, inhibits the growth of the axial length of the eye, and ensures the comfort of wearing the lens.

[0061] Based on the foregoing embodiments, in other embodiments of this application, when the second defocus element is disposed within the first defocus area, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed.

[0062] It should be noted that when the first defocus element, the second defocus element, and the third defocus element are set in the first defocus area, the setting form can be the same or different. The specific form can be determined by the actual application scenario, and no specific limitation is made here.

[0063] Based on the foregoing embodiments, in other embodiments of this application, the shapes of the first defocusing element, the second defocusing element, and the third defocusing element are one or more of the following: circular, regular polygonal, irregular polygonal, or complex surface.

[0064] In the embodiments of this application, the shape of the first defocusing element can be one or more of the following: a circle, a regular polygon, an irregular polygon, or a complex surface; the shape of the second defocusing element can be one or more of the following: a circle, a regular polygon, an irregular polygon, or a complex surface; and the shape of the third defocusing element can be one or more of the following: a circle, a regular polygon, an irregular polygon, or a complex surface.

[0065] In the embodiments of this application, the first defocusing element, the second defocusing element, and the third defocusing element can refer to a small structure disposed in the first defocusing area, such as a small concave or convex structure of a circle, an ellipse, a regular polygon such as a regular hexagon, an irregular polygon such as a shell, a complex surface, or other regular or irregular shapes.

[0066] Based on the foregoing embodiments, in other embodiments of this application, the lens body further includes: a second defocus region; wherein: A fourth defocusing element is provided on the second defocusing area, wherein the fourth defocusing element is at least the second defocusing element.

[0067] In this embodiment, in addition to the first defocus area, a second defocus area is provided on the lens to ensure better correction effect, and a fourth defocus element is provided in this area. In some applications, the fourth defocus element can be the second defocus element; in others, it can be another defocus element besides the second, for example, with a size between the sizes of the first and second defocus elements, or between the sizes of the first and third defocus elements. The method by which the fourth defocus element is set in the second defocus area can refer to, or differ from, the method used for setting the defocus element in the first defocus area. This is merely an example; the specific method can be limited by the actual application scenario, and no specific limitation is made here.

[0068] In some applications, the second defocus area can be any area other than the optical center area and the first defocus area. In other applications, the second defocus area can also be the area between the edge of the optical center area and the minimum radius of the first defocus area, or it can be an area with a radius greater than the maximum radius of the first defocus area.

[0069] Furthermore, in addition to the optical center area, the first defocus area, and the second defocus area, the lens body may also include a peripheral area, which is the outermost edge of the lens body. It should be noted that the peripheral area and the second defocus area can be selected or omitted depending on the actual situation, and the specific choice depends on the application scenario; no specific limitations are made here.

[0070] In the implementation process, the first defocusing element, the second defocusing element and the third defocusing element can be prepared on the surface of the lens or between the internal layers by means of laser engraving, molding and other methods. The lens surface can be the mirror surface of the lens close to the eye and / or the mirror surface of the lens away from the eye.

[0071] In some application scenarios, a lens is provided, such as Figure 2 As shown, the optical center region 11 of the lens is shell-shaped. The first defocusing region 12 is provided with the first defocusing element C1 and the second defocusing element C2. The second defocusing region 13 is provided with the fourth defocusing element. The outermost edge region of the lens is the peripheral region 14. The first defocusing element is arranged in a ring structure with the optical center region as the center, according to the shell shape. In addition to the first defocusing element, the remaining empty positions are provided with the second defocusing element as needed. The second defocusing element is also shell-shaped and based on the optical center region.

[0072] In some application scenarios, a lens is provided, such as Figure 3 As shown, the optical center region 11 of the lens is shell-shaped. The first defocusing region 12 is provided with the first defocusing element C1 and the second defocusing element C2. The second defocusing region 13 is provided with the fourth defocusing element. The outermost edge region of the lens is the peripheral region 14. The second defocusing element is mainly provided in the region far from the optical center region, while the first defocusing element is mainly provided in the region far from the optical center region.

[0073] In some application scenarios, a lens is provided, such as Figure 4 As shown, the optical center region 11 of the lens is shell-shaped. The first defocus region 12 is provided with a first defocus element C1, a second defocus element C2, and a third defocus element C3. The second defocus region 13 is provided with a fourth defocus element. The outermost edge region of the lens is the peripheral region 14. The third defocus element is set according to the space between the first defocus element and the second defocus element. That is, the number of third defocus elements near each first defocus element can be different, and can be determined by the area between each first defocus element and the second defocus element.

[0074] In some application scenarios, a lens is provided, such as Figure 5 As shown, the optical center region 11 of the lens is shell-shaped. The first defocusing region 12 is provided with a first defocusing element C1, a second defocusing element C2 and a third defocusing element C3. The second defocusing region 13 is provided with a fourth defocusing element. The outermost edge region of the lens is the peripheral region 14. The third defocusing element is set according to the space between the first defocusing element and the second defocusing element. That is, the number of third defocusing elements near each first defocusing element can be different.

[0075] Among them, Figures 2 to 4 In the diagram, the first and second defocus areas are shown using circular lines to represent their regional distribution. The fourth defocus element in the second defocus area is not shown.

[0076] It should be noted that lenses can be injection molded from metal molds or cast and machined from glass molds to obtain the required prescription power or semi-finished products. The inner surface of the semi-finished product is then machined in a lathe to achieve the desired prescription power. In some applications, lenses can also be made into spectacle lens blanks using ultraviolet (UV) light curing processes with metal and glass molds. The surface of the blanks is then machined in a lathe to create the desired spectacle lenses for the wearer, or spectacle lenses or spectacle lens blanks can be manufactured through a bonding process. In some applications, the lens material can be either polymeric or inorganic non-metallic. Polymeric materials include thermoplastic resins or thermosetting resins, while inorganic non-metallic materials include glass. Thermoplastic resins include polycarbonate or polymethyl methacrylate; thermosetting resins include any one of acrylic resins, cyclic sulfur resins, ethyl thiocarbamate resins, allyl resins, and polycarbamates.

[0077] It should be noted that lenses can be formed into the required prescription power or finished product through rotational forming, turning, or molding. Alternatively, they can be formed using a combination of rotational forming and turning, or molding and turning, to create eyeglass lenses or lens blanks for the wearer, or through bonding processes. Subsequent processes can include laser processing, dyeing, and nano-coating of the lenses. When the lens is a contact lens, high molecular weight compounds, or polymers, can be used. Each original unit that makes up a high molecular weight compound is called a monomer. The initial state of contact lens raw materials is liquid monomers or monomer segments, which must undergo appropriate curing processes. There are many polymerization forms in which monomers are converted into polymers. The type of monomer, polymerization conditions, and strength of the polymer bonds all affect the molecular orientation and spatial density of the polymer product. Contact lenses can be categorized as follows: rigid lenses, which can be made of materials such as polymethyl methacrylate; gas-permeable rigid lenses, which can be made of one or more materials such as cellulose acetate butyrate, siloxane methacrylate, fluorinated siloxane methacrylate, and fluorinated polymers; soft lenses, which can be made of one or more materials such as polyhydroxyethyl methacrylate, polyhydroxyethyl methacrylate blends, and non-polyhydroxyethyl methacrylate materials; and gas-permeable soft lenses, which can be made of one or more materials such as silicone elastic lenses and silicone hydrogel lenses.

[0078] Furthermore, a coating is formed on at least one side of the lens surface. This coating may include a transparent coating to increase lens transmittance, a hard coating to increase lens durability, a reflective coating to block harmful light, an anti-reflective coating to improve image visibility, a polarizing coating with photochromic properties, or other photochromic coatings doped with ultraviolet-sensitive materials. The coating itself may have different colors; under reflective conditions, the visible color may be green, blue, yellow, purple, or other colors.

[0079] The shape of the lens can also be round, square, elliptical or other irregular, and is not limited to a perfect geometric shape.

[0080] The lens provided in this application includes a lens body. With the optical center of the lens body as the center, the lens body includes at least an optical center region and a first defocus region. The first defocus region is located within a region with a radius of 6 mm to 26 mm centered on the optical center. A first defocus element is disposed within the first defocus region. The ratio between the area occupied by the first defocus element and the area of ​​the first defocus region is greater than or equal to 40% and less than or equal to 80%. Thus, by setting a first defocus region within a region with a radius of 6 mm to 26 mm centered on the optical center of the lens body, and by setting a first defocus element occupying a proportion greater than or equal to 40% and less than or equal to 80% within the first defocus region, a defocus control glasses design is achieved. This solves the problem of the current relatively simple lens design, enriches the types of control glasses, and achieves effective control of refractive errors.

[0081] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0082] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0083] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0084] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. A lens, characterized in that, The lens includes: a lens body; wherein: With the optical center of the lens body as the center, the lens body includes at least: an optical center region and a first defocus region; wherein: The first defocused area is located within a region with a radius of 6 mm to 26 mm centered on the optical center; A first defocusing element is provided in the first defocusing area, and the ratio between the area occupied by the first defocusing element and the area of ​​the first defocusing area is greater than or equal to 40% and less than or equal to 80%.

2. The lens according to claim 1, characterized in that, The width of the first defocused area is greater than or equal to 2.2 mm and less than or equal to 10 mm.

3. The lens according to claim 1, characterized in that, The first defocus area is further provided with a second defocus element, or the second defocus element and a third defocus element; wherein the sizes of the first defocus element, the second defocus element and the third defocus element are different.

4. The lens according to claim 3, characterized in that, The diameter of the first defocusing element is greater than or equal to 2.2 mm and less than or equal to 5 mm; The diameter of the second defocusing element is greater than or equal to 1 mm and less than or equal to 2.2 mm; The diameter of the third defocusing element is greater than or equal to 0.3 mm and less than or equal to 1 mm.

5. The lens according to claim 3, characterized in that, The radius of curvature of the first defocusing element, the second defocusing element, and the third defocusing element is greater than or equal to 0.573 mm and less than or equal to 173.63 mm.

6. The lens according to claim 5, characterized in that, The radius of curvature of the first defocusing element ranges from 30.26 mm to 173.63 mm; The radius of curvature of the second defocusing element ranges from 0.573 mm to 6.95 mm; The radius of curvature of the third defocusing element ranges from 6.26 mm to 33.62 mm.

7. The lens according to any one of claims 3 to 6, characterized in that, When the third defocusing element is provided in the first defocusing area, the third defocusing element is arranged with the first defocusing element as the center.

8. The lens according to claim 7, characterized in that, The third defocus unit can be configured according to one or more of the following forms: Circle, regular hexagon, ellipse, shell shape, irregular shape, sector shape, randomly distributed shape, dot shape, line shape.

9. The lens according to claim 1, characterized in that, When the first defocusing element is disposed within the first defocusing region, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed.

10. The lens according to claim 9, characterized in that, When the shape of the optical center region is shell-shaped, in the first direction parallel to the line connecting the user's two eyes, the longest distance of the optical center region is greater than or equal to 6 mm and less than or equal to 13 mm. In a second direction perpendicular to the first direction, the longest distance of the optical center region is greater than or equal to 5 mm and less than or equal to 11 mm.

11. The lens according to claim 1, characterized in that, In a first direction parallel to the line connecting the user's two eyes, the number of the first defocusing elements is greater than the number of the first defocusing elements in the second direction; wherein, the first direction is perpendicular to the second direction.

12. The lens according to claim 3, characterized in that, When the second defocusing element is disposed within the first defocusing area, it may be disposed in one or more of the following forms: The shape of the optical center region can be circular, hexagonal, elliptical, shell-shaped, irregular, fan-shaped, or randomly distributed. The first defocusing element, the second defocusing element, and the third defocusing element have one or more of the following shapes: circular, regular polygonal, irregular polygonal, or complex surface.

13. The lens according to claim 1, characterized in that, The lens body further includes: a second defocus region; wherein: A fourth defocusing element is provided on the second defocusing area, and the fourth defocusing element is at least the second defocusing element.

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