Out-of-focus lens and glasses

Abstract

The utility model belongs to the field of optical lenses, and particularly relates to an out-of-focus lens and glasses, and the out-of-focus lens comprises a first surface deviating from a cornea side and a second surface close to the cornea side; the first surface comprises an out-of-focus area, and the out-of-focus area comprises a plurality of dotted out-of-focus micro lenses which are arranged in a matrix; the second surface comprises a progressive area; the out-of-focus lens comprises a progressive area, the progressive area comprises personalized areas, the out-of-focus lens is equally divided into a plurality of quadrants, and the personalized areas are located in different areas according to different forms of the progressive area. The out-of-focus lens is equally divided into a plurality of quadrants, and the personalized areas are placed at different positions according to the form of the progressive area, so that more personalized vision correction can be provided through the design. The personalized area can be customized according to the difference of individual corneas so as to realize the optimal vision correction effect.

Description

Technical Field

[0001] The utility model belongs to the field of multi - focus optical elements, and particularly relates to a defocus lens and glasses. Background Art

[0002] The occurrence and development of myopia is a complex process involving multiple factors, among which the axial length of the eye and the defocus state are two important factors. The defocus theory holds that the defocus state in the peripheral retina has an important impact on the development of myopia. According to the dioptric principle, if the image is focused in front of the retina, that is, myopic defocus is formed, which helps to slow down the growth of the eye axis and thus inhibits the development of myopia. On the contrary, if the image is focused behind the retina, that is, hyperopic defocus is formed, which may lead to compensatory growth of the eye axis and further exacerbate the progression of myopia.

[0003] In order to achieve peripheral myopic defocus, defocus lenses are designed to change the focusing state of traditional glasses for peripheral light. By adjusting the peripheral focus in front of the retina, defocus lenses aim to slow down the growth of the eye axis and thus control the development of myopia. However, existing defocus lenses usually have a fixed defocus amount and may not provide an ideal prevention and control effect for individuals with high refractive errors or long eye axes.

[0004] How to provide a defocus lens to meet the prevention and control needs of different individuals and myopia stages is a technical problem that urgently needs to be solved at present. Summary of the Utility Model

[0005] To solve the technical problems existing in the lenses of the prior art, this application provides a defocus lens and glasses.

[0006] In the first aspect of this application, a defocus lens is provided. The defocus lens includes a first surface facing away from the cornea side and a second surface close to the cornea side; the first surface includes a defocus area, and the defocus area includes a plurality of dot - shaped defocus microlenses arranged in a matrix; the second surface includes a progressive zone; the progressive zone includes a personalized area. The defocus lens is equally divided into a plurality of quadrants, and according to the different shapes of the progressive zone, the personalized area is located in different areas.

[0007] In a further scheme of this application, the defocus lens is equally divided into a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant by 90 degrees clockwise; wherein the first quadrant and the second quadrant are located on the right side of the defocus lens; the second surface also includes two first phase - difference zones extending inward from the edge of the defocus lens; at this time, the progressive zone is in the first form, and the personalized area is located in the second quadrant and the third quadrant.

[0008] In a further scheme of this application, the second surface also includes two second phase - difference zones extending inward from the edge of the defocus lens, and the area of the second phase - difference zone is smaller than that of the first phase - difference zone; at this time, the progressive zone is in the second form, and the personalized area is located in the second quadrant and the third quadrant.

[0009] In a further embodiment of the present application, the personalized area is a sector area with an angle of 120° in the second quadrant and the third quadrant and is symmetrically arranged.

[0010] In a further embodiment of the present application, the width of the progressive zone increases from top to bottom and then gradually decreases; at this time, the progressive zone is in the third form, and the personalized area (22) is located in the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant.

[0011] In a further embodiment of the present application, the dot defocus microlens array in the defocus area is arranged in n concentric defocus rings, and the diameters of the n defocus rings increase sequentially along the radial direction outward; among them, the number of dot defocus microlenses is one of 398, 1800 to 2400, or more than 3000; the defocus amount in the defocus area is set to be between +0.05D and +4.50D.

[0012] In a further embodiment of the present application, when the number of dot defocus microlenses in the defocus area is 398 or 1800 to 2400, the first surface includes a central clear area corresponding to the position of the visual axis, and the dot defocus microlenses are arranged in a matrix form outward around the central clear area; among them, the minimum refractive unit of the central clear area is 0.05D, and the diopter is between +0.05D and +4.50D.

[0013] In a further embodiment of the present application, when the number of dot defocus microlenses in the defocus area is more than 3000, the dot defocus microlenses are arranged in a matrix form outward from the geometric center of the defocus lens.

[0014] In a further embodiment of the present application, the distance between the personalized area and the boundary of the central clear area is between 0 and 5.25 mm, and the defocus amount is between -3.5D and +2.5D.

[0015] The second aspect of the present application further provides a pair of glasses, which includes the defocus lens and the frame as described above.

[0016] Beneficial effects:

[0017] The defocus lens provided by the embodiment of the present utility model has a design feature including a first surface facing away from the cornea side and a second surface close to the cornea side, wherein the first surface has a defocus area, and the second surface has a progressive zone. The defocus area further includes a plurality of dot defocus microlenses arranged in a matrix form, and the progressive zone covers the personalized area. The technical effects of this design are mainly reflected in the following aspects:

[0018] 1. Through the dot defocus microlens matrix in the defocus area of the first surface, the lens can provide a positive defocus effect in the defocus area, making the light focus in front of the retina. Especially for children and adolescent myopia patients, it helps to slow down the development of myopia;

[0019] 2. The progressive zone design on the second side enables the lens to provide multifocal correction function. This means that the lens can simultaneously meet different vision requirements, providing higher visual comfort and adaptability; especially alleviating the discomfort that may occur when switching between different viewing distances and reducing visual fatigue.

[0020] 3. By equally dividing the defocus lens into multiple quadrants and placing the personalized area at different positions according to the shape of the progressive zone, this design can provide more personalized vision correction. The personalized area can be customized according to the differences of the individual's corneal shape, curvature, astigmatism, etc., to ensure that the lens better matches the shape of the individual's eyeball, thereby achieving the best vision correction effect.

[0021] Other features and advantages of the embodiments of the present utility model will be described in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation manners of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Among them Figure 1 in Figure 1 a is a cross-sectional view of the defocus lens provided by the embodiment of the present utility model; Figure 1 b is a schematic view of the first side of the defocus lens provided by the embodiment of the present utility model; Figure 1 c is a schematic view of the second side of the defocus lens provided by the embodiment of the present utility model;

[0024] Figure 2 is an example of dividing the defocus lens into four quadrants provided by the embodiment of the present utility model;

[0025] Figure 3 is a schematic structural view of the defocus lens provided by the embodiment of the present utility model when the progressive zone on the second side is in the first form;

[0026] Figure 4 is a schematic structural view of the defocus lens provided by the embodiment of the present utility model when the progressive zone on the second side is in the second form;

[0027] Figure 5 is a schematic structural view of the defocus lens provided by the embodiment of the present utility model when the progressive zone on the second side is in the third form;

[0028] Figure 6Schematic structural diagram of the defocusing lens provided by the embodiment of the utility model, with 398 defocusing areas on the first surface;

[0029] Figure 7 Schematic structural diagram of the defocusing lens provided by the embodiment of the utility model when the number of defocusing areas on the first surface is from 1800 to 2400;

[0030] Figure 8 Schematic structural diagram of the defocusing lens provided by the embodiment of the utility model when the number of defocusing areas on the first surface is more than 3000;

[0031] Figure 9 Schematic structural diagram of the defocusing lens provided by the embodiment of the utility model when the number of defocusing areas on the first surface is more than 3000 and the progressive zone on the second surface is in the first form;

[0032] Figure 10 Defocusing lens provided by the embodiment of the present utility model

[0033] Reference numerals

[0034] 100, defocusing lens;

[0035] 10, first surface; 11, defocusing area; 12, dot defocusing microlens; 13, central clear area;

[0036] 20, second surface; 21, progressive zone; 22, personalized area; 23, first aberration zone; 24, second aberration zone. Detailed implementation manners

[0037] In order to make the above and other features and advantages of the present utility model clearer, the present utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are merely exemplary, not restrictive.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] Continuing with the foregoing, in view of the technical problems existing in the existing defocus glasses, a general inventive concept of an embodiment of the present utility model provides a brand-new defocus lens, aiming to solve the above technical problems.

[0041] As Figure 1 FIG. shows a defocus lens 100, the defocus lens 100 includes a first surface 10 facing away from the corneal side and a second surface 20 close to the corneal side; the first surface 10 includes a defocus area 11, and the second surface 20 includes a progressive zone 21.

[0042] Specifically, the normal curvature radius of the second surface 20 is smaller than that of the first surface 10; the defocus area 11 includes a plurality of dot-shaped defocus microlenses 12 arranged in a matrix. These dot-shaped defocus microlenses 12 are in precise geometric shapes and arrangements, aiming to refract and disperse the incident light appropriately. Each microlens can act as a small optical lens, and they work together to correct and optimize the path of the light, making it better focus in front of the retina, intervening and suppressing the trend of eye axis elongation, slowing down the growth rate of the eye axis, and making the myopia degree tend to be stable. The diopter of the progressive zone 21 changes gradually to allow the lens to provide a clear field of view for objects at different distances without the need for the eyes to make a large amount of accommodation. In this way, the wearer can view objects at different viewing distances more naturally, by reducing the visual fatigue when the eyes switch between different distances.

[0043] Based on a general inventive concept of the present utility model, the progressive zone 21 includes a personalized area 22, the defocus lens is equally divided into a plurality of quadrants, and according to the different shapes of the progressive zone 21, the personalized area 22 is located in different areas.

[0044] It is understandable that the design of the personalized area 22 divides the defocus lens 100 into multiple quadrants, usually four. Each quadrant can be adjusted and optimized independently to match the corneal characteristics and visual needs of the wearer. According to the overall shape and design objectives of the progressive zone 21, the personalized area 22 can be located at different positions on the lens, enabling the defocus lens 100 to provide a more accurate and customized vision correction effect. Through the adjustment of the personalized area 22, the defocus lens 100 can better adapt to the wearer, thereby improving visual clarity and comfort, and better achieving myopia prevention and control. Moreover, it further enhances the customization of the lens. This flexibility enables the lens design to better meet the needs of specific populations, such as wearers of different ages, different myopia degrees, or different corneal shapes.

[0045] Exemplarily, Figure 2 , the defocus lens 100 is equally divided into the first quadrant A, the second quadrant B, the third quadrant C, and the fourth quadrant D by rotating it 90 degrees clockwise; in this coordinate system, the origin is the center of the lens, the horizontal direction is the virtual x-axis, and the vertical direction is the virtual y-axis. The four quadrants are: the first quadrant A (upper right), the second quadrant B (lower right), the third quadrant (lower left), and the fourth quadrant (upper left).

[0046] Of course, the division of this coordinate system is only for better describing the position; its function is to clearly define the orientation of each area. Then, those skilled in the art should know that describing this position in other forms, such as polar coordinates, azimuth compasses, etc., also belongs to the technical scope expressed by the embodiments of the present invention.

[0047]

Three Forms of the Progressive Zone 21

[0048] The progressive zone 21 includes various forms. The first form, the second form, and the third form provided by the embodiments of the present invention are taken as examples; when the progressive zone 21 is in different forms, the design areas corresponding to the personalized area 22 are different.

[0049] Such as Figure 3, the second surface 20 further includes two first astigmatic zones 23 extending inwards from the edge of the defocus lens 100; at this time, the progressive zone 21 is in the first form, that is, the progressive zone 21 in the second surface 20 adopts a "progressive type". It can be understood that the first astigmatic zones 23 are located on both sides of the lens, and their existence causes the curvature of the second surface 20 to change gradually. This change will cause blurred images on both sides. In fact, through specific optical effects of astigmatism and prism effect, the first astigmatic zones 23 affect the wearer's adaptability to the lens. Specifically, astigmatism causes light to scatter when passing through the lens, and the prism effect changes the propagation direction of light. These effects work together, causing the wearer to naturally use body language, such as turning the head, to replace the deviation of the eye position when viewing objects left and right. This helps to reduce the overuse of the eyes and unnecessary eye muscle tension, thereby reducing eye fatigue and discomfort.

[0050] Furthermore, when the progressive zone 21 is in the first form, the personalized zone 22 is specifically located in the second quadrant B and the third quadrant C. When the progressive zone 21 of the personalized zone is in the first form, the 22 can be independently adjusted and optimized. In progressive lenses, different quadrants correspond to different parts of the wearer's eyeball and visual needs. Therefore, placing the personalized zone 22 in these specific quadrants can more precisely match the corneal characteristics and visual needs of the wearer. By implementing personalized design in these areas, the lens can better adapt to the shape of the wearer's eyeball and visual needs, providing a more natural and comfortable visual correction effect.

[0051] Such as Figure 4 , the second surface 20 further includes two second astigmatic zones 24 extending inwards from the edge of the defocus lens 100, and the area of the second astigmatic zones 24 is smaller than that of the first astigmatic zones 23; at this time, the progressive zone 21 is in the second form; that is, the progressive zone 21 in the second surface 20 adopts an "anti-fatigue type".

[0052] It can be understood that by introducing two second astigmatic zones 24 extending inwards from the edge of the defocus lens 100, and the area of these second astigmatic zones 24 is smaller than that of the "progressive type" first astigmatic zones 23, when the progressive zone 21 presents the second form, that is, the progressive zone 21 in the second surface 20 adopts an "anti-fatigue type" design to better reduce the eye fatigue caused by long-term use of electronic devices or performing close work; the anti-fatigue type design aims to relieve this fatigue and provide a more comfortable visual experience for the wearer. The existence of the second astigmatic zones 24 and their smaller area design, compared with the first astigmatic zones 23, are more focused on optimizing the optical performance under specific visual tasks, such as reading or computer work. Such a design helps to reduce the accommodation burden of the eyes when performing these tasks, thereby relieving eye fatigue.

[0053] Further, when the progressive zone 21 is in the second form, the personalized zone 22 is similarly specifically located in the second quadrant B and the third quadrant C.

[0054] Furthermore, when the progressive zone 21 is in the first form or the second form, the personalized zone 22 is symmetrically arranged in a fan-shaped area with a 120° angle in the second quadrant B and the third quadrant C.

[0055] It can be understood that the symmetrical arrangement can ensure the balance and consistency of the lens. This symmetry helps to provide a uniform visual correction effect. In addition, placing the personalized zone 22 in the second quadrant B and the third quadrant C can better adapt to the wearer's eye shape and visual needs, and can provide a more accurate, consistent and comfortable vision correction effect, realizing personalized customization.

[0056] Such as Figure 5 In another design of the second surface 20, no phase difference zone is introduced, and the progressive zone 21 is in the third form, and its form presents a special change. Specifically, the width of the progressive zone 21 first increases from top to bottom and then gradually decreases, and this form is also called the "shell type".

[0057] It can be understood that the change in its width is to better adapt to the wearer's visual needs and eye movement. At the upper part of the lens, the width gradually increases, which helps to provide a wider hyperopia area, enabling the wearer to see distant objects more clearly. As the lens extends downward, the gradually decreasing width adapts to the needs of near vision and provides a more comfortable myopia area. In addition, the wearer's eye movement and head posture can also be considered. By optimizing the width change of the progressive zone, the wearer can be guided to turn the eyes and head in a more natural way, so as to obtain clear vision at different distances.

[0058] Further, when the progressive zone 21 is in the third form, the personalized zone 22 is located in the first quadrant A, the second quadrant B, the third quadrant C and the fourth quadrant D.

[0059]

Three matrix arrangement examples of the defocus area 11

[0060] Further, the dot matrix defocus microlenses 12 of the defocus area 11 are arranged in n concentric defocus rings, and the diameters of the n defocus rings increase sequentially along the radial direction outward;

[0061] Among them, the number of microlenses can vary according to design requirements. For example, they can be 398, which is a relatively small number and may be used for specific vision correction needs. On the other hand, the number of dot matrix defocus microlenses can also be between 1800 and 2400, or even more than 3000, which provides a larger correction range and finer vision adjustment.

[0062] The defocus amount of the defocus area 11 is set between +0.05D and +4.50D. The design of the defocus area 11 aims to utilize positive defocus (i.e., the focus is in front of the retina) to slow down the progression of myopia. By setting the defocus amount within this range, it can ensure that light is focused in a specific way when entering the eye, thereby stimulating the normal development of the retina or slowing down the growth of the eye axis to achieve myopia prevention and control.

[0063] Among them, the minimum refractive unit of the central clear area 13 is 0.05D, which means that vision correction can be more precise and accurate; it makes it possible for the wearer to adapt to the lens more easily. A smaller refractive change means that the eye does not need to make too large an adaptation adjustment; it reduces the accommodation burden of the eye. When the degree of the lens matches the actual needs of the eye very well, it helps to reduce eye fatigue and discomfort.

[0064] Such as Figure 6 and Figure 7 , when the dot defocus microlenses 12 in the defocus area 11 are 398 or 1800 to 2400, the first surface 10 includes a central clear area 13, and the dot defocus microlenses 12 are arranged in a matrix outward in sequence around the central clear area 13. It can be understood that the central clear area 13 ensures visual clarity in the main line of sight direction, that is, when the wearer looks straight ahead. This is crucial for performing daily activities such as reading, writing, driving, etc., because they usually require precise focusing of central vision; the matrix arrangement of the dot defocus microlenses 12 in the defocus area 11 provides a positive defocus effect, which helps to control the progression of myopia. This design is based on the defocus theory, and affects the growth and development of the eyeball by changing the optical signals of the peripheral retina. By arranging the dot defocus microlenses 12 in a ring shape, it can provide a defocus effect while reducing visual interference and discomfort. The matrix arrangement helps to maintain visual continuity and smooth transition.

[0065] It can be understood that according to different numbers of dot defocus microlenses, different degrees of defocus effects and vision corrections can be provided. A smaller number of dot defocus microlenses (such as 398) may be suitable for individuals with lower-degree myopia correction or specific eye use needs. While a larger number of dot defocus microlenses (such as 1800 to 2400) may provide a more extensive and finer defocus control.

[0066] Furthermore, such as Figure 8When the number of dot defocus microlenses 12 in the defocus area 11 is more than 3000, the dot defocus microlenses 12 are arranged in a matrix from the geometric center of the defocus lens outwards in sequence. Since there is no central clear area, the entire first surface 10 is designed as a defocus area, thus providing a comprehensive defocus effect. This means that no matter in which direction the wearer's line of sight is, their retina will receive a certain degree of positive defocus signal, which helps to more widely control the progression of myopia. At the same time, a large number of dot defocus microlenses 12 (more than 3000) provide a higher degree of personalized vision correction. Such a design allows for finer adjustment of the defocus amount to meet the specific myopia control needs of different individuals, and is especially suitable for those with relatively high myopia degrees, rapid progression, or special vision correction requirements. This embodiment provides a more effective myopia control solution.

[0067] Furthermore, the diopter of the defocus area 11 is between +0.05D and +4.50D, and is specifically designed adaptively according to the specific situation of the wearer.

[0068] In summary, the present application provides a defocus lens 100. One surface of the lens adopts a defocus design, which includes a central clear area and a surrounding defocus area. The defocus area is composed of multiple dot defocus microlenses, and these dot defocus microlenses are arranged with a specific defocus amount, aiming to provide a positive defocus effect to control the progression of myopia; the other surface of the lens adopts a progressive design, enabling the wearer to naturally switch between viewing objects at different distances. By combining the defocus and progressive designs, this defocus lens can simultaneously provide myopia control and multifocal correction functions. One surface is used to slow down the progression of myopia, and the other surface meets the vision requirements at different distances in daily life and reduces visual fatigue; particularly, the progressive area 21 also includes a personalized area 22, and its position is determined according to the shape of the progressive area 21 and the personalized needs of the wearer. Then, according to the shape of the progressive area 21, by dividing the lens into multiple quadrants and customizing the personalized area 22 according to the individual needs of the wearer, it can be ensured that each wearer can obtain the most suitable visual correction solution for themselves.

[0069] Furthermore, please continue to refer to Figures 3 to 5 、 Figure 9 The distance between the personalized area 22 and the optical center O of the defocus lens is between 0 and 5.25 mm, and the defocus amount is between -3.5D and +2.5D. The personalized area 22 on the second surface 20 is designed to provide highly personalized vision prevention and control and enhance visual comfort during the prevention and control process. This design ensures that the wearer can obtain a clear and comfortable visual experience under different visual needs.

[0070] The following continues to provide a method for personalized design:

[0071] I. Confirmation of the defocus amount:

[0072] First, obtain the corneal topographic map of the spectacle wearer. Specifically, use a professional corneal topographer to scan the cornea of the spectacle wearer to obtain detailed data on the corneal surface. These data include information such as the curvature and height of each point on the cornea, usually presented in the form of a color atlas. Then, obtain the center of the corneal topographic map (the vertex of the cornea), and define the central optical zone, the paracentral zone, and the peripheral zone from the center according to the central diameter size. Determine the defocus amount of the defocus lens based on the average diopter difference between the peripheral zone and the central optical zone in the corneal topographic map (refer to Table 1 below). Finally, perform the design and fabrication of the lens according to the determined defocus amount and other design parameters (such as the arrangement of the dot defocus microlens matrix, the setting of the progressive zone, etc.). Ensure that the lens can accurately match the corneal shape and visual acuity requirements of the spectacle wearer.

[0073] Table 1

[0074]

[0075] Exemplarily, for the corneal topographic map of a certain spectacle wearer, the average diopter of the central optical zone is 43.45D, and the average diopter of a certain point in the paraperipheral zone is 42.85D. Subtract the average diopter of the paraperipheral zone from the average diopter of the central optical zone, that is, 43.45D - 42.85D = 0.60D; since the difference is positive, this indicates that this point in the paraperipheral zone shows a positive defocus state relative to the central optical zone, and the defocus amount is +0.60D.

[0076] II. Confirmation of the defocus position:

[0077] As Figure 10 , determine the connecting line between the established position on the cornea and the pupil center:

[0078] First, determine an established position on the cornea, marked as point X. This point is usually determined according to the individual's eye characteristics and visual acuity requirements. Next, find the pupil center O1 of the pupil. The pupil is the black circular area in the eye, and its center point O1 is the main channel for light to enter the eye. Connect point X and the pupil center point O1 to form a connecting line, which is called the established radius r. The established radius r will be used to determine the position of the corresponding personalized area 22 of the defocus lens later.

[0079] 2. Extend the established radius r from the pupil center:

[0080] Starting from the pupil center O1, extend infinitely along the established radius r towards the periphery. Find the point on the lens corresponding to the corneal point X.

[0081] 3. Record the axis position of the extension line on the cornea and the positioning point on the lens:

[0082] At the position where the extension line intersects the cornea, record the axis position of this point. The axis position refers to the angular position of this point relative to the optical center of the lens. Next, find the corresponding point on the lens for this axis position. This point should be the position extended to 1.5 times r along the same axis from the optical O center of the lens, and is marked as point Y. Point Y is the position corresponding to the personalized area 22 on the defocus lens.

[0083] It can be understood that the confirmation of the defocus position is a key step to ensure that the defocus lens can accurately and individually match the wearer. By determining the established position of the cornea, the pupil center, and the axis position of the extension line on the cornea and the positioning points on the lens, it is ensured that the defocus lens can provide the best vision correction effect.

[0084] III. Confirmation of the design range of the personalized area 22:

[0085] According to the foregoing, the defocus lens is equally divided into multiple quadrants. According to the different shapes of the progressive area 21, the personalized area 22 is located in different areas; if the progressive area 21 is in the first shape or the second shape, the personalized area 22 is located in the second quadrant B and the third quadrant C; when the progressive area 21 is in the third shape, the personalized area 22 is located in the first quadrant A, the second quadrant B, the third quadrant C, and the fourth quadrant D.

[0086] In summary, the defocus lens 100 provided by the embodiment of the present invention has the following design features: a first surface 10 facing away from the cornea side and a second surface 20 close to the cornea side. The first surface 10 has a defocus area 11, and the second surface 20 has a progressive area 21. The defocus area 11 further includes a plurality of dot-shaped defocus microlenses 12 arranged in a matrix, and the progressive area 21 covers the personalized area 22. The technical effects of this design are mainly reflected in the following aspects:

[0087] 1. Through the matrix of dot-shaped defocus microlenses 12 in the defocus area 11 of the first surface 10, the lens can provide a positive defocus effect, causing light to focus in front of the retina, especially for children and adolescents with myopia.

[0088] 2. The design of the progressive area 21 on the second surface 20 enables the lens to provide a multifocal correction function. This means that the lens can simultaneously meet different vision needs, providing higher visual comfort and adaptability; especially alleviating the discomfort that may occur when switching between different viewing distances and reducing visual fatigue.

[0089] 3. By equally dividing the defocus lens into multiple quadrants and placing the personalized area 22 in different positions according to the shape of the progressive area 21, this design can provide more personalized vision correction. The personalized area 22 can be customized according to the differences of individual corneas to achieve the best vision correction effect.

[0090] Furthermore, those skilled in the art should understand that if all or part of the sub-modules involved in the products provided in the embodiments of the present utility model are combined or replaced by means of fusion, simple change, mutual transformation, etc., such as moving the positions of the components; or integrally setting the products formed thereby; or detachable design; as long as the combined components can form a device / device / system with specific functions, replacing the corresponding components of the present utility model with such a device / device / system also falls within the protection scope of the present utility model.

[0091] In an embodiment of the present utility model, there is also provided a pair of glasses, including the defocusing lens described in any one of the above embodiments. The morphology of the lens is not limited and can be circular, oval or square.

[0092] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0093] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A defocus lens, characterized in that: The defocus lens comprises a first surface (10) facing away from the cornea side and a second surface (20) close to the cornea side; The first surface (10) comprises a defocusing area (11), and the defocusing area (11) comprises a plurality of point-shaped defocusing microlenses (12) arranged in a matrix; The second surface (20) includes a progressive region (21); The progressive zone (21) comprises a personalized area (22), which divides the defocus lens into a plurality of quadrants; according to the different shapes of the progressive zone (21) of the defocus lens, the personalized area (22) is arranged in different quadrants.

2. The defocus lens according to claim 1, characterized in that: The defocus lens is equally divided into a first quadrant (A), a second quadrant (B), a third quadrant (C) and a fourth quadrant (D) by 90 degrees clockwise; wherein the first quadrant (A) and the second quadrant (B) are located on the right side of the defocus lens; The second surface (20) further comprises two first phase difference zones (23) extending inward from the edge of the defocus lens; at this time, the progressive zone (21) is in a first form, and the personalized area (22) is located in the second quadrant (B) and the third quadrant (C).

3. The defocus lens according to claim 2, characterized in that: Alternatively, the second surface (20) further comprises two second phase difference zones (24) extending inwardly from the edge of the defocused lens, and the area of ​​the second phase difference zone (24) is smaller than that of the first phase difference zone (23); in this case, the progressive zone (21) is in the second form, and the personalized area (22) is located in the second quadrant (B) and the third quadrant (C).

4. The defocus lens according to claim 3, characterized in that: The personalized area (22) is a fan-shaped area with an angle a in the second quadrant (B) and the third quadrant (C), and the fan-shaped areas are symmetrically arranged with respect to each other in the second quadrant (B) and the third quadrant (C), wherein a is 120° to 140°.

5. The defocus lens according to claim 2, characterized in that: Alternatively, the width of the progressive zone (21) increases from top to bottom and then gradually decreases; in this case, the progressive zone (21) is in the third form, and the personalized area (22) is located in the first quadrant (A), the second quadrant (B), the third quadrant (C) and the fourth quadrant (D).

6. The defocus lens according to any one of claims 1 to 5, characterized in that: The dot-shaped defocus microlenses (12) of the defocus area (11) are arranged in an array as n concentrically arranged defocus rings, and the diameters of the n defocus rings are arranged to increase in sequence radially outwards; The number of the point-shaped defocused microlenses (12) is one of 392 to 400, 1800 to 2400, or more than 3000; and the defocus amount of the defocus area (11) is set to between +0.05D and +4.50D.

7. The defocus lens according to claim 6, characterized in that: When the number of the point-shaped defocused microlenses (12) in the defocused area (11) is 392 to 400 or 1800 to 2400, the first surface (10) comprises a central clear area (13) corresponding to the visual axis position, and the point-shaped defocused microlenses (12) are sequentially arranged outward in a matrix around the central clear area (13); The minimum refractive unit of each of the point-shaped defocused microlenses (12) is 0.05D, and the refractive power is between +0.05D and +4.50D.

8. The defocus lens according to claim 6, characterized in that: When the number of the point-shaped defocused microlenses (12) in the defocused area (11) is more than 3000, the point-shaped defocused microlenses (12) are arranged in a matrix outwards in sequence from the geometric centre of the defocused lens.

9. The defocus lens according to claim 8, characterized in that: The distance between the personalized area (22) and the optical center of the defocus lens is between 0 and 5.25 mm, and the defocus amount is between -3.5D and +2.5D.

10. A pair of glasses, characterized in that: The defocus lens comprises the defocus lens according to any one of claims 1 to 9.

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