Eyeglass lens

Abstract

The present disclosure relates to an ophthalmic lens comprising an optical zone and a control zone. The optical zone is capable of providing a corrective effect for the vision of a refractive error patient. The control zone surrounds the central optical zone of the ophthalmic lens, and comprises control sub-units arranged sequentially in the circumferential direction, each control sub-unit having a plurality of first lens arrays and a plurality of second lens arrays parallel to each other, the first lens arrays comprising a plurality of first lenses abutting each other, and the second lens arrays comprising a plurality of second lenses abutting each other. The change rate of the modulation transfer function of each control sub-unit at each frequency is minimal, and the size of the point spread function is constant and the direction is different. The ophthalmic lens is capable of achieving a long-term effective refractive error prevention and control effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ophthalmic devices, and in particular to an ophthalmic lens intended to be worn in front of a human eye in order to inhibit the progression of an abnormality of the eye such as myopia or hypermetropia. BACKGROUND

[0002] Conventional lenses mainly seek to correct vision for eyes that already have ametropia. Such lenses are a form of palliative to address the defects of the eye. After wearing such lenses (for example, single vision lenses), the vision inevitably deteriorates further (for example, myopia deepens further). It would be more desirable to be able to actively control the ametropia (for example, myopia, hypermetropia, etc.) in order to prevent further deterioration of the vision. Therefore, ophthalmic lenses are being developed from conventional single vision lenses to new functional lenses with a myopia control effect.

[0003] Among existing lenses with a defocus effect, the area of the ophthalmic lens for implementing the defocus effect can be divided into a ring-shaped defocus design (commonly known as a "concentric circle" design), a progressive multifocal design, and a scattering microlens layout design. In the concentric circle design, the surface of the ophthalmic lens is usually provided with 2-8 continuous defocus areas with different refractive powers. In the progressive multifocal design, the refractive power of the ophthalmic lens changes progressively along the radial direction. In the scattering microlens layout design, the surface of the ophthalmic lens is regularly provided with microlenses with additional refractive power or special focal point direction.

[0004] There is evidence that these concentric circle designs, progressive multifocal designs, and scattering microlens layout designs of ophthalmic lenses can indeed achieve a certain delay control effect on myopia. After these lenses are commercially popularized and used by a larger population, researchers and doctors generally find that, in the early use process (mostly for 1 year), the ophthalmic lenses can significantly slow down the development of the vision abnormality of the patients. As the number of years of wearing the ophthalmic lenses increases, the vision abnormality patients will gradually adapt to and compensate for the single form of defocus stimulation provided by the ophthalmic lenses, resulting in a weakening of the myopia prevention and control effect of the ophthalmic lenses year by year.

[0005] Therefore, there is an urgent need for an ophthalmic lens that can provide a sustained and effective myopia inhibition effect for patients with ametropia. SUMMARY

[0006] In view of the above status of the ophthalmic lenses according to the prior art, one of the purposes of the present disclosure is to provide an ophthalmic lens that can continuously inhibit the development of ametropia of an eye.

[0007] This purpose is achieved by disclosing an ophthalmic lens in the following form. The ophthalmic lens comprises:

[0008] an optical zone forming a base surface of the spectacle lens and having a prescribed refractive power based on a prescription of a patient's eyeball, the optical zone including a central optical zone located at a central region of the spectacle lens; and

[0009] a control zone surrounding the central optical zone of the spectacle lens, the control zone including control sub-units arranged sequentially in a circumferential direction of the spectacle lens, each control sub-unit having a plurality of first lens arrays and a plurality of second lens arrays parallel to each other, the first lens arrays including first lenses abutting each other, the second lens arrays including second lenses abutting each other, the first lenses and the second lenses having different refractive powers, the first lenses having additional refractive power compared to the prescribed refractive power, each first lens having a face shape in a regular polygon, and

[0010] the control sub-units at circumferentially adjacent positions of the same radial position of the spectacle lens have a modulation transfer function difference within 3mm entrance pupil diameter less than 0.05, and a spot diagram size equal and direction different.

[0011] Preferably, the first lens arrays include first lenses arranged on a straight line segment, the straight line segment not being in a radial direction of the spectacle lens.

[0012] Preferably, the control sub-units are in a triangle shape, and the straight line segment and adjacent sides of the triangle each form an included angle.

[0013] Preferably, more than 80% of the first lenses have focal points not on a retina of a wearer, and corresponding imaging wavefronts are not in focus.

[0014] Preferably, within a 3mm entrance pupil diameter, the control sub-units have a modulation transfer function at 20 lp / mm in a range of 0.45-0.55, and a modulation transfer function at 30 lp / mm in a range of 0.36-0.50.

[0015] Preferably, the first lens arrays and the second lens arrays are alternately arranged.

[0016] Preferably, each of the first lenses has a face contact with another first lens through a face where edges of the regular polygon are located.

[0017] Preferably, the control sub-units are in a triangle shape.

[0018] Preferably, the control zone defines a boundary zone composed of circumferentially continuously packed first lenses at a region bordering the optical zone, an inner edge of the boundary zone has a length greater than 75 times a side length of the first lenses, and an inscribed circle of the inner edge has a radius not greater than 7.5mm.

[0019] Preferably, the number of sides of the regular polygon is selected from any one of 3, 4, 6, 8.

[0020] Preferably, the straight line segment and the side of the triangle form an included angle of 60 degrees.

[0021] Preferably, the spectacle lens is arranged with 6 control sub-units in its circumferential direction.

[0022] In addition, the present disclosure also relates to a frame spectacle comprising any one of the spectacle lenses as described above.

[0023] On the basis of common general knowledge in the art, the above-mentioned preferred embodiments can be combined in any manner, thereby obtaining preferred examples of the present disclosure.

[0024] The spectacle lens and the frame spectacle having the same according to the present disclosure are designed with control sub-units arranged circumferentially on the defocus region of the spectacle lens, which are asymmetric and special in shape and are used for controlling the progression of myopia and other refractive errors. On the one hand, the spectacle lens can provide a substantially constant modulation transfer function in its circumferential direction, thereby ensuring that the wearer will not experience significant visual differences when the line of sight passes through different control sub-units during eye rotation. On the other hand, the spectacle lens provides a varying point spread function in its circumferential direction, which provides varying defocus stimuli in the circumferential direction to achieve a sustained and effective control of the progression of refractive errors. BRIEF DESCRIPTION OF DRAWINGS

[0025] For better understanding of the above and other objects, features and advantages of the present disclosure, reference should be made to the preferred embodiments thereof, which are shown in the accompanying drawings. The same reference numerals in different drawings denote the same or similar components. It should be understood by those skilled in the art that the drawings are intended to schematically illustrate the preferred embodiments of the present disclosure and have no limiting effect on the scope of the present disclosure, and the components in the drawings are not drawn to scale.

[0026] Figure 1 is a structural schematic view of the front surface of a spectacle lens according to the preferred embodiments of the present disclosure;

[0027] Figures 2-4 is a simulated point spread function of a 3mm aperture region of the control sub-units at different circumferential positions;

[0028] Figures 5-7 is a modulation transfer function of a 3mm aperture region of the control sub-units at different circumferential positions;

[0029] Figure 8 is a simulated corresponding point spread function of a 3mm aperture region of each control sub-unit of a spectacle lens according to the preferred embodiments of the present disclosure and a schematic view of the corresponding object image passing through the region;

[0030] Figure 9is a structural schematic view of the front surface of a spectacle lens according to another preferred embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The disclosed concept of the present disclosure will be described in detail with reference to the drawings. The disclosed concept described herein is merely according to preferred embodiments of the present disclosure, and other ways capable of realizing the present disclosure can be conceived by those skilled in the art on the basis of the preferred embodiments, which are also within the scope of the present disclosure. In the following detailed description, directional terms such as "upper", "lower", "inner", "outer", "vertical", "horizontal" and the like are used with reference to the directions described in the drawings. The components of the embodiments of the present disclosure can be placed in various different directions, and the directional terms are for the purpose of example and are not limiting.

[0032] In the present disclosure, the spectacle lens 1 is a spectacle lens 1 suitable for being worn in front of a human eye. The spectacle lens 1 is not attached to the surface of the eyeball, but is erected in front of the eye by means of a metal frame or a plastic material frame.

[0033] Figure 1 A front view of the spectacle lens 1 is shown, which corresponds to the perspective of the front surface of the spectacle lens 1 centering on the front.

[0034] Referring to Figure 1 In this embodiment, the spectacle lens 1 has a substantially circular face shape, alternatively, the spectacle lens 1 can also have a rectangular, square or other irregular face shape.

[0035] Unless otherwise specified, "face shape" in the present disclosure refers to the shape defined by the outer edge of the object as a whole or the local area of the object as observed along the normal direction of the center of the object or the local area of the object.

[0036] Referring to Figure 1 which shows the spectacle lens 1, which includes an optical zone 10 and a control zone 20, etc. Among them, in order to distinguish, Figure 1 The areas with different refractive powers in the figure are shown in different colors, and it should be understood that, Figure 1 The overall spectacle lens 1 shown is transparent. The optical zone 10 can provide correction for the vision of the ametropic patient. The optical zone 10 of the spectacle lens 1 is optionally made of a material with a refractive index of 1.5 to 1.76 and suitable for use as a spectacle lens 1.

[0037] Optical zone 10 forms the base surface S of lens 11 and has a prescription refractive power D0 based on the eyeball. Optical zone 10 includes a central optical zone 11 located in the central region of lens 1 and a peripheral optical zone 12 located in the outer periphery of lens 1. For optical zone 10 used to correct vision, its surface is smooth and continuous. The base surface S can be a rotationally symmetric spherical or aspherical surface, or a non-rotationally symmetric cylindrical or spherocylonic surface. Non-rotationally symmetric cylindrical or spherocylonic surfaces can have different curvatures in the four quadrants. Optical zone 10 may also incorporate astigmatism design to accommodate patients with astigmatism problems.

[0038] The central optical region 11 in the optical region 10 has a non-circular surface shape. The radius R of the inscribed circle of the central optical region 11 is set to any value in the range of 3mm to 8mm, such as 4mm, 5mm, 6mm, etc.

[0039] Control area 20 is used to form a specific defocus region, which includes control sub-units U arranged sequentially in the circumferential direction of the lens 1. Each control sub-unit U has a plurality of first lens arrays 21 and second lens arrays 22 parallel to each other. The first lens array 21 includes a plurality of first lenses 21A attached to each other, and the second lens array 22 includes second lenses 22A attached to each other. The first lenses 21A and the second lenses 22A have different refractive powers. The first lenses 21A have additional refractive power relative to the prescription refractive power. Each first lens 21A has a polygonal surface shape. The modulation transfer functions (e.g., modulation transfer functions at frequencies of 20 lp / mm and / or 30 lp / mm) of the control sub-units U at circumferentially adjacent positions at the same radial position of the lens 1 are substantially the same (e.g., the difference between them is less than 0.05), and the dot plots are of equal size but different orientations.

[0040] The additional refractive power of the first lens 21A is, for example, in the range of [+2.0D, +8.0D] or [-8.0D, -2.0D]. Preferably, the additional refractive power is set within the range of [+2.0D, +6.0D] or [-6.0D, -2.0D]. For myopic patients, the additional refractive power of the first lens 21A can be set to have a positive additional refractive power, such as +3D, +4D, etc. For hyperopic patients, the additional refractive power of the first lens 21A can be set to have a negative additional refractive power, such as -3D, -4D, etc.

[0041] Each vertex of the regular polygon of the first lens 21A on the spectacle lens 1 is set on the base surface S. It should be noted that the base surface S at the location where the first lens 21A is located is a virtual surface (the virtual surface is occupied by the surface of the first lens 21A), and the virtual surface corresponds to the surface of the spectacle lens 1 that has a specific prescription refractive power set at that location according to the prescription. When each vertex is set on the base surface S, the first lens 21A with additional positive refractive power is formed in a form that protrudes from the surface of the spectacle lens 1. It can be understood that during the processing of the spectacle lens 1, the processing equipment program automatically generates the pattern of the base surface S of the lens. When processing to the location where the first lens 21A is located, the vertex positions of the first lens 21A can be set using the base surface S at that location as a reference point, and the pattern of the first lens 21A can be further processed based on this. In this process, it is not necessary to first process the base surface S at the location where the first lens 21A is located, and then process the first lens 21A. Setting the vertex of the first lens 21A of the spectacle lens 1 on the base surface S ensures the positional accuracy, curvature accuracy, and refractive power accuracy of the first lens 21A. Similarly, when the first lens 21A has additional negative refractive power, it is formed with its center recessed from the surface of the spectacle lens 1. The processing mechanism in this case is the same as that for the first lens 21A with additional positive refractive power, and will not be repeated here.

[0042] It is understandable that, with the above processing method, each edge of the first lens 21A protrudes or recesses from the base surface S by a certain distance. The magnitude of this distance is determined by the material of the first lens 21A and its additional refractive power. After setting each vertex of the first lens 21A on the base surface S, the first lens 21A will smoothly transition from the base surface S of the spectacle lens 1, avoiding the formation of a non-smooth surface on the spectacle lens. For the first lens 21A protruding from the base surface S, the lens will not have a large thickness due to the presence of the first lens 21A, thus achieving a thin and light characteristic. For the first lens 21A recessed from the base surface S, the smaller recess depth of the first lens 21A will not cause the spectacle lens 1 to have weak bending and torsional resistance at the position corresponding to the first lens 21A.

[0043] The surface shape of the first lens 21A can be Figure 1The shape may be a regular hexagon or an equilateral triangle, square, or regular octagon (not shown). As a preferred embodiment, the first lens 21A within each control subunit U may not be a single-faceted shape. Specifically, within the same first lens array within the control subunit U, some lenses are equilateral triangular lenses with shorter side lengths, while others are composed of lenses with longer side lengths and a greater number of sides, representing other regular polygonal shapes. In this case, the side length of the equilateral triangle can be equal to or 1 / N of the side length of the adjacent regular polygon, ensuring that the corresponding modulation transfer functions of each region within the control subunit U are substantially the same. Here, N is half the number of side lengths of the other regular polygonal first lenses 21A within the same first lens array 21. For example, in a scenario where the main component of the first lens array 21 uses a regular hexagonal first lens 21A (denoted as the "main lens"), and a non-main component uses an equilateral triangular first lens 21A (denoted as the "auxiliary lens"), the side length of the auxiliary lens is half the side length of the main lens.

[0044] Generally speaking, in the same first lens array 21, the first lens 21A with an equilateral triangular surface is only set at the junction of the control subunit U and the central optical area 11, and in the area where the first lens array 21 is curved.

[0045] See also Figure 1 Each first lens array 21 within the control subunit U can be configured to consist of several first lenses 21A arranged on a straight line segment. This straight line segment is not radially aligned with the spectacle lens 1. Figure 1 In the preferred embodiment, each first lens array 21 defines only one straight line segment within the control subunit U. In other examples, each first lens array 21 may define several parallel straight line segments.

[0046] The second lens 22A constituting the second lens array 22 has a prescription refractive power, or a refractive power close to the prescription refractive power, for example, the refractive power of the second lens 22A is D0±0.5D. The arrangement of each second lens 22A in the second lens array 22 can be set in the same way as the arrangement of each first lens 21A in the first lens array 21, and will not be described again here.

[0047] The control subunit U, composed of the first lens array 21 and the second lens array 22, is generally triangular, and the straight line segment defined by the first lens array 21 (or the second lens array 22) forms an angle with each adjacent side of the triangle. The significance of this design is that, based on the requirement that "each control subunit U at different circumferential positions at the same radial position has the same modulation transfer function, and the dot plots are of the same size but different directions," a longer boundary can be formed between the central optical area 11 and the control area 20 of the spectacle lens 1.

[0048] The angle formed by the straight line segment and the side of the triangle can preferably be set to 60°. The triangle defined by the control subunit U is then an equilateral triangle. Further, each control subunit U is set as follows: Figure 1 As shown, only one triangular region is defined. It can be seen that, in this case, the control subunit U located in the diagonal region of the spectacle lens 1 is a repeating unit.

[0049] This needs to be combined with Figure 1 To further clarify, in this application, the overall "triangular" or "equilateral triangle" shape of each control subunit U refers to the meaning that, at a macroscopic level, the outer edge of a certain area or component is triangular, as can be discerned by a person skilled in the art. For an area or component that is generally triangular or equilateral, its edge is not necessarily a straight line segment or border; the edge or border can actually be a straight line segment, a wavy line segment, or other forms of broken lines, etc. One or more vertices of the triangle may be missing. Based on the shape defined by the outer edge of the area or component that can be discerned by a person skilled in the art, that area or component falls under the meaning of "generally triangular or equilateral triangle" or "triangular or equilateral triangle". For example, in Figure 1 In the example shown, "control subunit U that is generally triangular in shape" or "control subunit U that is triangular in shape" can encompass "control subunit U that does not have a neat outer edge (i.e., a smooth straight line segment) but is generally triangular in shape." Figure 1 The outer edge of the control subunit U is actually a wavy line, but a technician can discern that the surface of the control area 20 defined by the outer edge of the control subunit U is triangular. The "side" of the triangle can be considered as the straight line segment defined by all the center lines of the first lens 21A and the second lens 22A of the outermost part of the control subunit U.

[0050] The outer edge of the entire control area 20 is generally in the shape of a regular hexagon. For the meaning of "regular hexagon" or other regular polygons, please refer to the relevant explanation of "triangle" in the previous paragraph, which will not be repeated here.

[0051] See also Figure 1Furthermore, it is preferable not to have a repetitive control subunit U in the lower half of the lens 1. Wearers often view objects through the lower half of the lens 1 in certain overhead viewing scenarios. Not having a repetitive control subunit U in the lower half will better facilitate the lens 1 providing non-repetitive defocus stimulation during eye movements in such scenarios, ensuring that the wearer does not experience adaptive fatigue from defocus stimulation after prolonged wear of the lens 1, thereby reducing the effectiveness of farsightedness / myopia control.

[0052] by Figure 1 For example, the control area 20 defines a boundary region consisting of circumferentially continuous first lenses 21A in the area where it intersects with the optical area 10. The length of the inner edge of this boundary region is 78 times the side length of the first lens 21A, and the diameter of the inscribed circle of this inner edge is 7.2 mm, while the radius of the circumscribed circle is 8.4 mm. In this example, the side length of the first lens 21A is 0.7 mm. Alternatively, when the diameter of the circumscribed circle of the first lens 21A is set in the range of 1.0 mm to 2.2 mm, the side length of the first lens 21A can be set to other values. Correspondingly, the length of the inner edge of the boundary region can also reach more than 75 times the side length of the first lens 21A.

[0053] In the control subunit U with the above triangular arrangement, when the straight line segment defined by the first lens array 21 (second lens array 22) is set to form an angle with each side of the corresponding triangle, the inner edge of the boundary region can be formed as described above, resulting in a longer inner edge. This inner edge not only lies within the wearer's 10°-20° foveal viewing angle range but also completely covers the wearer's 10°-20° foveal viewing angle range. According to Earl Smith's theory, the retina is most sensitive to defocus stimulation within this viewing angle range. The longer inner edge of the boundary region designed above will provide a larger and more complete stimulus. Furthermore, this non-smooth inner edge of the boundary region can provide the wearer with varying and most sensitive defocus stimulation during eye movement, avoiding adaptive defocus stimulation and ensuring long-term effective myopia / hyperopia control of the lens 1.

[0054] It should be noted that the applicant has also unexpectedly discovered that the existing myopia control lenses 1 with defocus microlenses commonly suffer from the problem of "double image". Specifically, the area with prescription refractive power on the existing myopia control lenses 1 forms a clear image plane on the wearer's retina. At the same time, the focal points of the imaging sub-wavefronts formed by the cluster of defocus microlenses overlap, thus forming a second image plane in front of or behind the retina. Since both image planes are captured by the visual cells, this causes the "double image" problem for the wearer, and some wearers will experience accommodative disorder. To address this, this application sets the focal points of the imaging sub-wavefronts of most (more than 80%) or even all of the first lenses 21A to be non-overlapping (i.e., "more than 80% of the microlenses, or all of the microlenses, have non-confocal imaging wavefronts"), meaning that the focal points of 80% or all of the first lenses 21A are different from each other. These first lenses 21A cannot form a clear image in front of or behind the wearer's retina, thus overcoming the "double image" problem of the existing spectacle lens 1.

[0055] While ensuring that "the imaging wavefronts of most or all first lenses 21A are not confocal," this application proposes another more advantageous solution, in addition to the conventional method of setting the first microlenses of the spectacle lens 1 to have random refractive power: setting most (over 80%) or all of the first lenses 21A of the spectacle lens 1 to have the same refractive power. To achieve the goal of "the imaging wavefronts of all first lenses 21A being non-confocal" while maintaining uniform refractive power, the applicant further sets each first lens 21A such that light rays passing through the center of the first lens 21A and light rays passing through the region on the spectacle lens 1 with the prescription refractive power intersect at the retina. In the example of a first lens 21A with a single refractive power, the centerline of these first lenses 21A can be designed to be collinear with the centerline of the corresponding region of the base surface S of the spectacle lens 1. At this point, these first microlenses with additional refractive power create a phase delay for the wavelet sub-surfaces corresponding to their surface shape and aperture in the incident wavefront, making the wavelet sub-surfaces non-confocal. However, the central rays of the wavelet sub-surfaces all point towards the same image point position formed on the retina by the basic curved surface. This ensures that the wavelet sub-surfaces will stack at this image point when they propagate to the retina, diffusing the ideal image point into a blur spot. This results in a significant decrease in the image quality formed by the first lens 21A assembly of the spectacle lens 1. When the wearer's gaze direction passes through the central optical zone 11 of the lens, the central field of vision can form a clear image quality. At the same time, the peripheral field of vision passes through the peripheral microstructure area of ​​the lens, forming a blurred image effect on the peripheral retina. This plays a role in controlling and intervening in the growth and development of the axial length and the progression of myopia.

[0056] When the first lens 21A has multiple focal points, it is necessary to ensure that none of the focal points of each first lens 21A are located on the retina. In this case, the center line of the first lens 21A can be designed to be collinear with the center line of the corresponding area of ​​the base surface S of the spectacle lens 1, and the spectacle lens 1 can also achieve the same function as a cluster of first lenses 21A with a single refractive power.

[0057] Optionally, a first lens 21A with multiple focal points is provided at the inner edge of the aforementioned boundary area, and a first lens 21A with a single focal point is provided in the remaining areas, so as to provide the most favorable defocus stimulation in the most sensitive area of ​​the 10°-20° field of view.

[0058] See also Figure 5-7 The first lens array and the second lens array on the spectacle lens 1 are arranged alternately. Furthermore, each first lens 21A is in surface contact with the other two lenses through the faces containing the edges of regular polygons. Each first lens array 21 defines a straight line segment, and each second lens array 22 defines a straight line segment. In each adjacent first lens array 21 and second lens array 22 of the control subunit U, the number of first lenses 21A is one more than the number of second lenses 22A.

[0059] The control area 20 is preferably designed such that, in the horizontal central region directly below the spectacle lens 1, a first lens array 21 with a horizontally defined straight line segment is not provided. When the eye scans the object horizontally, the central portion of the control subunit U of the control area 20 can still provide dynamic defocus stimulation.

[0060] See Figures 2-4 The diagram illustrates the modulation transfer function (MTF) of lens 1 based on the following baseline conditions: the first lens 21A has a side length of 0.7 mm and an additional refractive power of +3.5D; the second lens 22A has a side length of 0.7 mm and an additional refractive power of 0. Assuming the object point is at infinity and the distance from the eyeball rotation center to the rear vertex of the lens is 24 mm, a spatial ray tracing method is used. Within a 3 mm entrance pupil diameter, the MTF of each control subunit U is in the range of 0.47-0.49 at 20 lp / mm and in the range of 0.43-0.45 at 30 lp / mm. Therefore, each control subunit U has the same MTF.

[0061] If the dimensions of the first lens 21A as defined above are maintained, the corresponding modulation functions of each control subunit U at 20 lp / mm and 30 lp / mm do not change significantly. Overall, the modulation transfer function of the control subunit U at 20 lp / mm is in the range of 0.45-0.55, and the modulation transfer function at 30 lp / mm is in the range of 0.36-0.50.

[0062] As can be seen, the overall difference between high-frequency and low-frequency spatial frequencies is not significant based on the above design of the spectacle lens 1, and both can achieve good suppression effects.

[0063] For clarity of display Figure 8 For the correspondence between the point diagrams and the control subunits U, please refer to [link / reference]. Figure 8 It shows a corresponding point chart in each control subunit U, in addition... Figure 8 It also displays the image of the letter E corresponding to the visual acuity chart 20 / 32 (~0.6) for each control subunit U. Among them, Figure 8 The displayed point array and the object images of the mother and daughter units E are all obtained based on simulations of the 3mm aperture within each control subunit U. Combined with... Figure 8 As shown, the significance of adjusting each control subunit U to have the same (or substantially the same) modulation transfer function is that the clarity of the wearer's vision through each control subunit U can remain basically consistent. This can be observed... Figures 5-7 The corresponding object "E" for each control subunit U shown can be identified. Furthermore, Figure 1 The corresponding to Figure 8 The modulation transfer function (MTF) data obtained from the simulation of the 3mm aperture of the three lower control subunits U also demonstrates that the wearer can see an image with basically consistent clarity through each control subunit U. This design avoids the dizziness caused to the wearer due to changes in image clarity during eye movement.

[0064] Meanwhile, please continue to see Figures 2-4 and combined Figure 1 It can be seen that when the eye sees objects through each adjacent control subunit U, each control subunit U provides a changing defocus stimulus, which can form a dynamic visual stimulus effect under a dynamic field of view, and realize the irregular phase modulation of the off-axis wavefront.

[0065] See also Figure 1 In the direction of the normal to the center of the lens 1, the outer edge of the control area 20 defines a substantially hexagonal shape. Alternatively, the outer edge of the control area 20 can also be substantially square, rectangular, circular, etc. The total area of ​​the control area 20 covering the surface of the lens determines the shape defined by the outer edge of the control area 20. Generally, in embodiments with a control area 20 having a larger coverage area, the outer edge of the control area 20 can define more shapes; in embodiments with a control area 20 having a smaller coverage area, the outer edge of the control area 20 is preferably set to a circle or a shape with a large number of sides (e.g., ...). Figure 1 (The hexagon shown).

[0066] Preferably, the optical region 10 and the control region 20 are integrally formed. For an integrally formed eyepiece, the relative position between the optical region 10 and the control region 20 is precisely controlled during the manufacturing process. For an eyepiece formed by bonding, it is actually difficult to ensure precise control of the relative position between the control region 20 and the optical region 10.

[0067] However, the integrally formed optical region 10 and control region 20 are not necessarily true; for example, in Figures 1-8 In the embodiment of the first lens 21A shown, which has the form of a convex lens, the control area 20 may be fixed to the base surface S by adhesive bonding.

[0068] Furthermore, despite Figure 1 The control area 20 shown in the embodiment is formed on the object-side surface of the eyepiece away from the eyeball. In fact, this is only a preferred embodiment. The control area 20 can also be formed on the eyeball-side surface of the eyepiece close to the eyeball; or, the control area 20 can be formed on both the object-side surface and the eyeball-side surface of the eyepiece at the same time.

[0069] Figure 9 The control subunit U shown is merely illustrative. Based on the above description of this application, those skilled in the art can substitute it with other solutions, such as... ​ As shown.

[0070] It should be noted that, although not shown, the eyeglass lens actually has grooves, through holes, protrusions, or other mechanisms or structures of any form for fixing it near its outer edge and / or at the outer edge. These mechanisms or structures are used to fix the eyeglass frame, etc., and are not part of the innovation of this disclosure. Whether or not these contents are disclosed does not affect the feasibility of the solution disclosed herein. They are not elaborated here.

[0071] The scope of protection of this disclosure is defined only by the claims. Thanks to the teachings of this disclosure, those skilled in the art will readily recognize that alternative structures to the structures disclosed herein can be used as feasible alternative implementations, and that the implementations disclosed herein can be combined to produce new implementations, which also fall within the scope of the appended claims. Attached image description:

[0073] Eyeglass lenses: 1.

[0074] Optical zone: 10.

[0075] Central optical zone: 11.

[0076] Surrounding optical zone: 12.

[0077] Control area: 20.

[0078] Control subunit: U.

[0079] First lens array: 21.

[0080] First lens: 21A.

[0081] Second lens array: 22.

[0082] Second lens: 22A.

[0083] Base surface: S.

Claims

1. An ophthalmic lens comprising: an optical zone forming a base surface of the ophthalmic lens and having a prescribed refractive power based on a prescription of a patient's eyeball, the optical zone comprising a central optical zone located in a central region of the ophthalmic lens; and a control zone surrounding the central optical zone of the ophthalmic lens, the control zone comprising control sub-units arranged sequentially in a circumferential direction of the ophthalmic lens, each control sub-unit having a first lens array and a second lens array parallel to each other, the first lens array comprising first lenses abutting each other, the second lens array comprising second lenses abutting each other, the first lenses and the second lenses having different refractive powers, the first lenses having additional refractive power compared to the prescribed refractive power, each first lens having a face shape of a regular polygon, and the control sub-units at circumferentially adjacent positions of the same radial position of the ophthalmic lens have a modulation transfer function difference within 3 mm entrance pupil diameter less than 0.05, and a spot diagram size equal, directions different, wherein the modulation transfer function of the control sub-units at 20 lp / mm is within a range of 0.45-0.55 and the modulation transfer function at 30 lp / mm is within a range of 0.36-0.50 within 3 mm entrance pupil diameter. the first lens array comprises first lenses arranged on a straight line segment, the straight line segment not being in a radial direction of the ophthalmic lens.

2. The ophthalmic lens of claim 1, wherein, the control sub-units are triangular, and the straight line segment and adjacent sides of the triangular form an included angle.

3. The ophthalmic lens of claim 2, wherein, more than 80% of the first lenses have focal points not on a retina of a wearer, and corresponding imaging wavefronts are not in focus.

4. The ophthalmic lens of claim 1, wherein, the first lens array and the second lens array are alternately arranged.

5. The ophthalmic lens of any one of claims 1-4, wherein, each of the first lenses is in face contact with another through a face where edges of the regular polygon are located.

6. The ophthalmic lens of claim 5, wherein, the control sub-units are generally triangular.

7. The ophthalmic lens of any of claims 1-4, wherein, the control zone defines a boundary zone composed of circumferentially continuously packed first lenses at a region bordering the optical zone, an inner edge of the boundary zone has a length greater than 75 times a side length of the first lenses, and an inscribed circle of the inner edge has a radius not greater than 7.5 mm.

8. The ophthalmic lens of any one of claims 1-4, wherein, a number of side lengths of the regular polygon is selected from any one of 3, 4, 6, 8.

9. The ophthalmic lens of claim 8, wherein, the straight line segment and the sides of the triangular form an included angle of 60 degrees.

10. The ophthalmic lens of claim 3, wherein, the ophthalmic lens has 6 control sub-units arranged in the circumferential direction thereof.

11. The ophthalmic lens of any of claims 1-4, wherein, ​

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