Lens and glasses

Abstract

Disclosed are a lens and glasses. The lens comprises: a lens body having a geometric center and an edge, wherein in a direction extending from the geometric center toward the edge, the lens body comprises an optical region surrounding the geometric center and a regulation region surrounding the optical region, and an optical center of the optical region coincides with the geometric center; and a microstructure unit disposed on the lens body and located in the regulation region, wherein the microstructure unit comprises a plurality of first surfaces for receiving incident light, and the incident light is deflected after passing through the first surfaces, such that a focal point deviates from a retina and forms a blurred image, wherein a minimum angle α is formed between the incident light and the first surface, satisfying: 0°<α<90°.

Description

A lens and eyeglasses

[0001] This application claims priority to Chinese patent application No. 202410705156.3, filed on June 3, 2024, entitled "A Lens and Eyeglasses", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of optometry technology, specifically to a lens and eyeglasses. Background Technology

[0003] Microstructures on eyeglass lenses can help inhibit the further development of axial myopia. The additional refractive power generated by the microstructures differs from that at the optical center of the lens, creating peripheral myopic defocus and preventing the peripheral focus from falling on or behind the retina, thus inhibiting myopia progression. However, when using defocus theory to prevent myopia, the microstructures on the lenses need to be adapted to individual eye characteristics and visual needs. Different wearers have different eye shapes and refractive power requirements, so it is necessary to ensure that the microstructures can accurately generate the required refractive power. This makes it difficult to standardize the shape and position of the microstructures. Secondly, the effect of using microstructures to generate different refractive powers to interfere with axial growth weakens with the duration of use, resulting in poorer stability and durability of the microstructures used to create defocus. Invention Overview

[0004] In a first aspect, embodiments of this application provide a lens, comprising:

[0005] A lens body has a geometric center and an edge; extending from the geometric center to the edge, the lens body has an optical region surrounding the geometric center and an adjustment region surrounding the optical region; the optical center of the optical region coincides with the geometric center.

[0006] A microstructure unit is disposed on the lens body and located in the adjustment area; the microstructure unit includes a plurality of first surfaces for receiving incident light; and the incident light, after passing through the first surfaces, is deflected so that the focal point deviates from the retina and forms a blurred image;

[0007] The incident light ray has a minimum angle α with the first surface, satisfying: 0° < α < 90°.

[0008] In some embodiments, the lens further satisfies the following condition: 65° < α < 90°.

[0009] In some embodiments, the lens body includes a first optical surface near the eye and a second optical surface near the incident light, the first optical surface and the second optical surface being disposed opposite to each other; wherein the microstructure unit is disposed on the first optical surface and / or the second optical surface.

[0010] In some embodiments, the microstructure unit is a protrusion structure, and the microstructure unit further includes a second surface connected to the first surface, wherein a plurality of the first surfaces and the second surfaces surround to form the protrusion structure;

[0011] The second surface is connected to the second optical surface, and the first surface protrudes from the second surface toward the incident light; or

[0012] The second surface is connected to the first optical surface, and the first surface protrudes from the second surface toward the eye.

[0013] In some embodiments, the microstructure unit is a recessed structure, the microstructure unit having an opening penetrating the first optical surface and / or the second optical surface; a plurality of the first surfaces together define the recessed structure;

[0014] Wherein, when the opening penetrates the second optical surface, the first surface is connected to the second optical surface and extends from the second optical surface toward the eye; or

[0015] When the opening penetrates the first optical surface, the first surface is connected to the first optical surface and extends from the first optical surface toward the incident light.

[0016] In some embodiments, the microstructure unit includes a plurality of microstructure units, a portion of which is a protruding structure and another portion is a recessed structure;

[0017] When the microstructure unit is a protruding structure, the microstructure unit also includes a second surface connected to the first surface, and multiple first surfaces and second surfaces surround to form the protruding structure;

[0018] When the microstructure unit is a recessed structure, the recessed structure has an opening, and the multiple first surfaces together define the recessed structure;

[0019] Wherein, the second surface is connected to the second optical surface, the opening penetrates the second optical surface, and in a direction extending from the geometric center to the edge, the protruding structure and the recessed structure are spaced apart on the second optical surface; or

[0020] The second surface is connected to the first optical surface, the opening penetrates the first optical surface, and the protruding structure and the recessed structure are spaced apart on the first optical surface in a direction extending from the geometric center to the edge.

[0021] In some embodiments, the first surface is a plane; or

[0022] The additional refractive power generated by the incident light after passing through the first surface of the microstructure unit is 0.

[0023] In some embodiments, the microstructure unit comprises a plurality of microstructure units, which are spaced apart from each other in the adjustment region.

[0024] In some embodiments, the microstructure unit comprises a plurality of units, and at least two of the plurality of microstructure units are connected to each other in the adjustment region.

[0025] In some embodiments, a plurality of the microstructure units are connected end-to-end to form one or more rings; the rings are arranged around the geometric center;

[0026] Wherein, when there are multiple rings, the multiple rings are arranged in the adjustment area in a direction extending from the geometric center to the edge; or

[0027] The ring can be either a circle or a regular polygon.

[0028] In some embodiments, the minimum distance between the edge of the optical region and the geometric center is 0.5 mm to 5 mm; or

[0029] The optical zone is selected from either a circle or a regular polygon.

[0030] In some embodiments, the adjustment region has an inner edge that is connected to the optical region and an outer edge that is away from the optical region, the inner edge coinciding with the edge of the optical region, and the maximum distance between the outer edge and the geometric center is 15 mm to 35 mm;

[0031] The outer edge of the lens body can be any one of a circular, polygonal, or irregular shape.

[0032] In some embodiments, the microstructure unit is selected from at least one of a triangular prism and an N-sided prism, wherein N is an integer greater than or equal to 4; or

[0033] The maximum height of the microstructure unit is 0.001 mm to 0.5 mm, and the minimum length of the second surface is 0.1 mm to 3 mm; or

[0034] The prism power of the microstructure unit is from 1.0 cm / m to 20 cm / m; or

[0035] The microstructure unit is an irregular prism, and the shape of either the first surface or the second surface is selected from at least one of a circle, a regular polygon, and an irregular polygon.

[0036] Secondly, embodiments of this application also provide eyeglasses, the eyeglasses including the aforementioned lenses.

[0037] Beneficial Effects: An embodiment of this application provides a lens comprising: a lens body having a geometric center and an edge; extending from the geometric center to the edge, the lens body having an optical region surrounding the geometric center and an adjustment region surrounding the optical region; the optical center of the optical region coincides with the geometric center; a microstructure unit disposed on the lens body and located in the adjustment region; the microstructure unit includes a plurality of first surfaces for receiving incident light; and the incident light, after passing through the first surfaces, is deflected so that the focal point deviates from the retina and forms a blurred image; wherein, the incident light has a minimum angle α with the first surfaces, satisfying: 0° < α < 90°. In the lens of this application, by introducing a first surface into the microstructure unit that can deflect incident light rays and deviate from their original optical path, the focal point is further deviated from the macula center of the retina, thereby affecting image quality. The microstructure unit of this application has the potential to inhibit the further occurrence and development of refractive errors. Moreover, the shape and position of the microstructure unit do not need to be uniformly controlled; only the deflection of incident light rays is required to adapt to different vision correction needs. This enables the adaptability of more types of microstructure units. Secondly, since the minimum angle α between the incident light ray and the first surface satisfies: 0° < α < 90°, it is ensured that the incident light ray will always be deflected after passing through the first surface, changing the light path and no longer maintaining the original optical path. This is different from the principle of defocusing caused by the refractive force generated by the microstructure, which affects the imaging. This reduces the problem of reduced control effect of defocused lenses due to long-term use. The lens of the embodiment of this application can maintain a stable adjustment effect, and this adjustment effect can be maintained for a long time during long-term use. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a schematic diagram of the structure of a lens provided in an embodiment of this application;

[0040] Figure 2 is a side view of the lens shown in Figure 1;

[0041] Figure 3 is a magnified view of part A in Figure 2;

[0042] Figure 4 is a side view of a lens with a concave structure as its microstructure unit;

[0043] Figure 5 is a magnified view of part B in Figure 4;

[0044] Figure 6 is a schematic diagram of a lens whose microstructure unit includes convex and concave structures.

[0045] Figure 7 is a side view of the lens provided in Figure 6;

[0046] Figure 8 is a magnified view of part C in Figure 7;

[0047] Figure 9 is a schematic diagram of a lens structure with spaced microstructure units provided in an embodiment of this application;

[0048] Figure 10 is a schematic diagram of a lens structure with spaced microstructure units provided in an embodiment of this application;

[0049] Figure 11 is a schematic diagram of the lens structure with partial connection of microstructure units provided in an embodiment of this application;

[0050] Figure 12 is a schematic diagram of another lens structure with partial connection of microstructure units provided in an embodiment of this application;

[0051] Figure 13 is a schematic diagram of a lens structure in which microstructure units are connected to form a ring according to an embodiment of this application;

[0052] Figure 14 is a schematic diagram of the imaging principle of the lens provided in the embodiment of this application;

[0053] Figure 15 is a ray tracing diagram of ideal human eye imaging provided in an embodiment of this application;

[0054] Figure 16 is a light tracing diagram of the defocus lens provided in the embodiment of this application in the human eye;

[0055] Figure 17 is a light tracing diagram of a lens containing a prism microstructure provided in an embodiment of this application in the human eye;

[0056] Figure 18 is a dot plot corresponding to Figure 15;

[0057] Figure 19 is a dot plot corresponding to Figure 16;

[0058] Figure 20 is a dot plot corresponding to Figure 17;

[0059] Reference numerals: 10-Lens body, 101-Geometric center, 102-Edge, 103-Optical zone, 104-Adjustment zone, 1041-Inner edge, 1042-Outer edge, 105-First optical surface, 106-Second optical surface, 20-Microstructure unit, 201-First surface, 202-Second surface, 203-Opening, 30-Ring. Embodiments of the present invention

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0061] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise expressly specified.

[0062] Incorporating microstructures into eyeglass lenses to help inhibit the further development of axial myopia has become a mainstream design in modern eyeglasses, and its effectiveness has been clinically proven. In terms of microstructure design, most methods integrate the microstructure with the lens body. The additional refractive power generated by the microstructure differs from that at the optical center of the lens, creating peripheral myopic defocus and preventing the peripheral focus from falling on or behind the retina, thus inhibiting myopia progression. Alternatively, microstructures can be designed as cylindrical lenses, arranged radially in a ring. When light passes obliquely through the cylindrical microstructure, the ring surface of the microstructure can generate higher-order aberrations, blurring the image plane and thus inhibiting myopia progression. Whether the microstructure has refractive power or cylindrical lenses, incorporating microstructures on the lens surface will generate additional refractive power, such as the additional refractive power of a spherical lens with microlenses or a cylindrical lens with cylindrical lenses. The resulting effect is that no image is formed on the retina, thus inhibiting myopia progression. The key objective of myopia-inhibiting lens design is how to reshape the focal position and disrupt peripheral image quality. Adding additional refractive power to spherical lenses and cylindrical lenses is one way to achieve this design goal. However, since the microstructures on the lenses need to be adapted to the individual's eye characteristics and visual needs, and different wearers have different eye shapes and power requirements, it is difficult to ensure that the microstructures can accurately generate the required refractive power. This makes it difficult to unify the shape and position of the microstructures. Secondly, the effect of using microstructures to generate different refractive powers to interfere with the growth of the axial length of the eye will weaken with the increase of use time, resulting in poor performance of the microstructures used to form defocus in terms of regulation stability and durability.

[0063] This application provides a lens and eyeglasses, which aims to provide an eyeglass lens that causes incident light to be deflected when passing through microstructured units, deviating from the original optical path and thus affecting image quality, so as to suppress the further occurrence and development of refractive errors.

[0064] Referring to Figures 1 and 2, a lens includes a lens body 10 and a microstructure unit 20. The lens body 10 has a geometric center 101 and an edge 102. Extending from the geometric center 101 to the edge 102, the lens body 10 has an optical region 103 surrounding the geometric center 101 and an adjustment region 104 surrounding the optical region 103. The optical center of the optical region 103 coincides with the geometric center 101. The microstructure unit 20 is disposed on the lens body 10 and located in the adjustment region 104. The microstructure unit 20 includes a plurality of first surfaces 201 for receiving incident light. After the incident light passes through the first surfaces 201, it is deflected, causing the focal point to deviate from the retina and forming a blurred image. The incident light has a minimum angle α with the first surface 201, satisfying: 0° < α < 90°.

[0065] It is understood that the lens of this application, by setting microstructure units 20 on the lens body 10, and by using the deflection effect of the first surface 201 in the microstructure unit 20 on light, can adjust the position of the focal point, causing it to deviate from the retina, thereby achieving the effect of vision correction. Since the minimum angle α between the incident light and the first surface 201 satisfies 0° < α < 90°, it is ensured that the incident light will always be deflected after passing through the first surface 201, changing the light path and no longer maintaining the original light path, further causing the focal point to deviate from the macula center of the retina, thus affecting image quality. Therefore, the microstructure unit 20, by deflecting the incident light and changing its imaging position, has the potential to inhibit the further occurrence and development of refractive errors. This differs from the principle of defocusing caused by the refractive force generated by the microstructure, which affects imaging. This reduces the problem of reduced control effect due to long-term use of defocused lenses. The lens of this application can maintain a stable adjustment effect, and this adjustment effect can be maintained persistently during long-term use. Since the microstructure unit 20 only needs to deflect the incident light to adapt to different vision correction needs, the shape and position of the microstructure unit 20 can be flexibly adjusted to adapt to different degrees of myopia, corneal curvature and other individual differences. The diverse design of the microstructure unit 20 allows the lens to be customized according to different vision correction needs, achieving personalized vision correction.

[0066] In some embodiments, the term "incident ray" refers to light entering the lens from the surrounding environment. It can be light from natural light or other light sources (such as light waves or artificial light sources). The incident ray is a parallel ray and generally extends in a direction perpendicular to the lens surface. The incident ray typically enters the lens from its external environment via a transparent material surface such as glass or plastic. Before entering the lens, the ray has an angle of incidence (the angle between the ray and the surface normal), where the minimum angle α refers to the angle between the incident ray and the first surface 201 in the microstructure unit 20. The first surface 201 of the microstructure unit 20 can have a special shape, texture, or material that causes the incident ray to be deflected as it passes through it, thereby changing the propagation path of the light. By adjusting the shape, angle, and surface characteristics of the microstructure unit, the degree and direction of light deflection can be controlled, thus affecting the propagation of light in the lens and the imaging effect.

[0067] In some embodiments, the term "optical center" refers to the center point of axial symmetry of the lens, or the center point of symmetry along the optical axis. Light rays passing through the optical center will not undergo deflection or refraction, meaning the beam propagation direction will not deviate from the axis. The term "geometric center" refers to the center point of symmetry of the lens's shape or boundary, determined based on the lens's geometric properties. In this embodiment, after the optical center of optical region 103 coincides with the geometric center 101, light rays passing through the optical center will not undergo deflection or refraction, which helps maintain the collimation and focal stability of the light rays, simplifying the lens's structural design.

[0068] In some embodiments, the minimum angle α between the incident light ray and the first surface 201 can be any one value or a range between any two values ​​from 1°, 2°, 5°, 8°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 82°, 85°, 88°, and 89°. It is understood that when α satisfies the above range, it can further ensure that when the incident light ray passes through the microstructure unit 20, the transmitted light ray is deflected, deviating from its original optical path, thereby affecting the imaging quality and further suppressing the abnormal development of refractive errors in the eye.

[0069] In some embodiments, the lens further satisfies the following condition: 65° < α < 90°. It is understood that when the range of 65° < α < 90° is further satisfied, the incident light rays, after passing through the first surface 201, deviate from the retina along a set angle and direction without passing through the pupil. At this set angle and direction, the focal point of the light rays further deviates from the macula center of the retina, thereby improving the effect of blurred imaging. Furthermore, at this angle and direction, the incident light rays can be completely dispersed, changing from a single effect on the outer region of the retina to an effect on all regions, thereby maximizing the maintenance of the modulation effect of the microstructure unit 20 and improving the persistence of lens modulation.

[0070] In some embodiments, further referring to FIG2, the lens body 10 includes a first optical surface 105 near the eye and a second optical surface 106 near the incident light, the first optical surface 105 and the second optical surface 106 being disposed opposite to each other; wherein, the microstructure unit 20 is disposed on the first optical surface 105 and / or the second optical surface 106. It is understood that the first optical surface 105 and the second optical surface 106 specifically refer to two opposing surfaces of the lens body 10. During lens wearing, one of the two surfaces is closer to the wearer's eye, namely the first optical surface 105; the other is closer to the incident light, namely the second optical surface 106. It should be noted that at least one of the first optical surface 105 and the second optical surface 106 has a surface shape such as a sphere, torus, or freeform surface. After the incident light passes through the first optical surface 105 and the second optical surface 106, it can generate refractive power to form a defocus signal for adjusting myopia or hyperopia. After the wearer wears the lens, this signal can be clearly imaged.

[0071] In some embodiments, further referring to FIG2 and FIG3, the microstructure unit 20 is a protruding structure, and the microstructure unit 20 further includes a second surface 202 connected to the first surface 201, and a plurality of first surfaces 201 and second surfaces 202 surround to form a protruding structure; the second surface 202 is connected to the second optical surface 106, and the first surface 201 protrudes from the second surface 202 toward the incident light.

[0072] In some embodiments, the second surface 202 may also be connected to the first optical surface 105, with the first surface 201 protruding from the second surface 202 toward the eye side (not shown in the figure), and the connection method is the same as in Figure 3. In some other embodiments, the second surface 202 may also be connected to both the second optical surface 106 and the first optical surface 105, that is, microstructure units 20 are provided on the opposing surfaces of the lens body 10.

[0073] It should be noted that the protruding structure can be understood as continuous or discontinuous protrusions formed by the microstructure unit 20 on the lens body 10. Taking Figure 2 as an example, the incident direction of the incident light is as shown by the arrow in the figure, which is basically perpendicular to the second optical surface 106. When the incident light passes through the microstructure unit 20, since the first surface 201 protrudes towards the incident light and has an angle α with the incident light, the incident light is deflected when passing through the microstructure unit 20, thus affecting the imaging quality.

[0074] In some embodiments, the protrusion structure may be at least one of a regular prism or an irregular prism.

[0075] In some embodiments, the microstructure unit 20 is selected from at least one of a triangular prism and an N-sided prism, wherein N is an integer greater than or equal to 4, for example, at least one of a quadrilateral prism, a pentagonal prism, and a hexagonal prism. Taking Figure 3 as an example, the microstructure unit 20 is a triangular prism.

[0076] In some embodiments, the microstructure unit 20 is an irregular prism, and the shape of either the first surface 201 or the second surface 202 is selected from at least one of a circle, a regular polygon, and an irregular polygon. For example, regular polygons include triangles, quadrilaterals, trapezoids, regular pentagons, regular hexagons, etc.

[0077] In some embodiments, the term "prism" refers to an optical device consisting of at least two planes of a transparent medium connected by one or more prisms. Prisms can refract and disperse light. For example, when light passes from one medium through the surface of a prism into another, the light is refracted due to the different optical properties of the two media, thus changing its direction of propagation. Depending on the angle of incidence, the refractive index of the medium, and the geometry of the prism, the refracted light will exhibit an effect that deviates from its original direction of propagation.

[0078] In some embodiments, the maximum height of the microstructure unit 20 is between 0.001 mm and 0.5 mm. For example, the maximum height can be any one or a range between any two values ​​from 0.001 mm, 0.002 mm, 0.005 mm, 0.008 mm, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm. It should be noted that the microstructure unit 20 has a maximum height when it is a protruding structure. This maximum height can be understood as the distance from the vertex of the prism perpendicular to the base surface (usually a bottom surface), which connects the two edges or sides of the prism. The shape of the prism determines how its height is measured, typically by direct measurement using an optical microscope, calipers, etc.

[0079] In some embodiments, the minimum length of the second surface 202 is between 0.1 mm and 3 mm. For example, the minimum length is any one or any two values ​​of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm, 2 mm, 2.5 mm, and 3 mm. It should be noted that the second surface 202 is only present when the microstructure unit 20 is a protruding structure. The minimum length of the second surface 202 can be understood as the minimum dimension of the projected shape corresponding to the microstructure unit 20 shown in FIG. 1, that is, the width of the microstructure unit 20, used to measure the size of the microstructure unit 20.

[0080] In some embodiments, the prism power of the microstructure unit 20 is 1.0 cm / m to 20 cm / m. For example, the prism power can be any one value or a range between any two values ​​from 1.0 cm / m, 2.0 cm / m, 3.0 cm / m, 4.0 cm / m, 5.0 cm / m, 6.0 cm / m, 7.0 cm / m, 8.0 cm / m, 9.0 cm / m, 10 cm / m, 11 cm / m, 12 cm / m, 13 cm / m, 14 cm / m, 15 cm / m, 16 cm / m, 17 cm / m, 18 cm / m, 19 cm / m, and 20 cm / m. When the above prism power range is met, it can be ensured that the incident light rays can be deflected after passing through the first surface 201 of the microstructure unit 20, thereby changing the original propagation path. By controlling the prism power, the refraction behavior of light can be precisely adjusted, thereby optimizing the light propagation characteristics.

[0081] In some embodiments, further referring to Figures 4 and 5, the microstructure unit 20 is a recessed structure, and the microstructure unit 20 has an opening 203 penetrating through the first optical surface 105 and / or the second optical surface 106; a plurality of first surfaces 201 face the opening 203 and jointly define the recessed structure, that is, the inner wall of the recessed structure is the first surface 201; wherein, when the opening 203 penetrates through the second optical surface 106, the first surface 201 is connected to the second optical surface 106 and extends from the second optical surface 106 toward the eye side; when the opening 203 penetrates through the first optical surface 105, the first surface 201 is connected to the first optical surface 105 and extends from the first optical surface 105 toward the incident light.

[0082] It should be noted that the recessed structure can be understood as the groove formed by the microstructure unit 20 on the lens body 10. Taking Figure 4 as an example, the incident direction of the incident light is as shown by the arrow in the figure, which is basically perpendicular to the second optical surface 106. When the incident light passes through the microstructure unit 20, it first passes through the opening 203 and then directly contacts the first surface 201. Since there is an angle α between the incident light and the first surface 201, the incident light is deflected when it passes through the microstructure unit 20, which affects the imaging quality.

[0083] In some embodiments, further referring to Figures 6, 7, and 8, the microstructure unit 20 includes multiple units, some of which are protruding structures and others are recessed structures; specifically referring to Figure 6, hollow circles represent protruding structures and solid circles represent recessed structures; in this case, the protruding and recessed structures are distributed at intervals on the surface of the microstructure unit 20; when the microstructure unit 20 is a protruding structure, the microstructure unit 20 also includes a second surface 202 connected to the first surface 201, and the multiple first surfaces 201 and the second surface 202 surround to form the protruding structure; when the microstructure unit 20 is a recessed structure, the recessed structure has an opening 203, and the multiple first surfaces 201 together define the recessed structure; wherein, the second surface 202 is connected to the second optical surface 106, the opening 203 penetrates the second optical surface 106, and in the direction extending from the geometric center 101 to the edge 102, the protruding and recessed structures are spaced apart on the second optical surface 106.

[0084] In some embodiments, the second surface 202 may also be connected to the first optical surface 105, and the opening 203 may also penetrate the first optical surface 105 (not shown in the figure). In the direction extending from the geometric center 101 to the edge 102, the protruding structure and the recessed structure are spaced apart on the first optical surface 105.

[0085] In some embodiments, further referring to FIG8, in order to further reduce the interference of the vertices on the protruding and recessed structures on the incident light, the microstructure unit 20 can be thinned to remove the sharp vertices and form a plane, which can help the light pass through and be deflected evenly.

[0086] In some embodiments, the first surface 201 is a plane. It is understood that when the first surface 201 is a plane, it is to ensure that the incident light rays can only be deflected after passing through the first surface 201, and will not be out of focus.

[0087] In some embodiments, the additional refractive power generated after the incident light passes through the first surface 201 of the microstructure unit 20 is 0. Since the additional refractive power generated is 0, it can also be demonstrated that the incident light can only be deflected after passing through the first surface 201.

[0088] In some embodiments, referring to FIG1, the microstructural units 20 include a plurality of microstructural units 20, which are spaced apart from each other in the adjustment region 104. Because the microstructural units 20 are spaced apart, they are distributed in an island-like pattern, and each microstructural unit 20 is an independent entity. In addition to FIG1, FIG9 and FIG10 illustrate some other ways in which the microstructural units 20 are spaced apart. When the microstructural units 20 are spaced apart, they can be uniformly distributed or randomly distributed, as long as they can deflect the incident light so that the focal point is deflected away from the retina.

[0089] In some embodiments, referring to Figures 11 and 12, the microstructure unit 20 includes a plurality of microstructure units 20, at least two of which are connected to each other in the adjustment region 104. It is understood that when at least two of the plurality of microstructure units 20 are connected, the layout of the microstructure units 20 on the lens body 10 can be further optimized to achieve a compact arrangement of the microstructure units 20, thereby ensuring greater deflection of incident light and improving the effect of myopia prevention.

[0090] In some embodiments, further referring to FIG13, multiple microstructural units 20 are connected end-to-end to form one or more rings 30; the rings are arranged around the geometric center 101; wherein, when there are multiple rings 30, the multiple rings 30 are arranged in the adjustment area 104 in a direction extending from the geometric center 101 to the edge 102. When the microstructural units 20 are connected in the manner shown in FIG13, the formed rings 30 enrich the peripheral control effect of the lens, improve the refraction effect and irregularity of light, and achieve the purpose of improving the control effect.

[0091] In some embodiments, the ring 30 is either a circle or a regular polygon. The center of the ring 30 coincides with the geometric center 101 to ensure the uniformity of the ring 30 distribution and improve the wearer's adaptation to the lens.

[0092] In some embodiments, referring to FIG1, the minimum distance between the edge of the optical region 103 and the geometric center 101 is 0.5 mm to 5 mm; for example, it can be any one of 0.5 mm, 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, or a range between any two values. The coincidence of the center of the optical region 103 with the geometric center 101 ensures more accurate optical performance. The optical region 103 is selected from either a circle or a regular polygon. When the optical region 103 is circular, its center is the center of the circle.

[0093] In some embodiments, referring to FIG1, the adjustment area 104 has an inner edge 1041 that is connected to the optical area 103 and an outer edge 1042 that is away from the optical area. The inner edge 1041 coincides with the edge of the optical area 103, and the maximum distance between the outer edge 1042 and the geometric center 101 is 15 mm to 35 mm; for example, it can be any one of 15 mm, 20 mm, 25 mm, 30 mm, 35 mm or a range between any two values.

[0094] In some embodiments, the outer edge 1042 is any one of a circular, polygonal, or irregular shape on the lens body 10.

[0095] In some embodiments, the lens can be cast or injection molded from a metal mold, or cast from a glass mold to the desired prescription power or semi-finished product. The semi-finished product is then machined in a lathe to obtain the desired prescription power on its inner surface. The lens can also be made into the desired prescription power or semi-finished product using a UV curing process with metal and glass molds. The semi-finished product is then machined in a lathe to form the eyeglass lens required by the wearer, or an eyeglass lens or eyeglass lens blank is made through a bonding process.

[0096] In some embodiments, the lens material includes polymeric materials or inorganic non-metallic materials. The polymeric materials include thermoplastic resins or thermosetting resins, and the inorganic non-metallic materials include glass, etc. Thermoplastic resins include polycarbonate or polymethyl methacrylate; thermosetting resins include any one of acrylic resins, cyclosulfide resins, ethyl thiocarbamate resins, allyl resins, and polycarbamates.

[0097] In some embodiments, a coating is formed on at least one side of the lens surface. The 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 films doped with ultraviolet-sensitive materials. The coating itself may have different colors; its visual color under reflective conditions may be green, blue, yellow, purple, or other colors.

[0098] In some embodiments, the lenses obtained through the above process can be combined with eyeglass frames to further obtain eyeglasses. The shape of the lenses can be circular, square, elliptical, or other irregular shapes. It should be noted that the shape of the lenses can be approximately as described above, and is not limited to a perfect geometric shape.

[0099] In some embodiments, referring to Figure 14, the deflection of parallel incident light rays after passing through the microstructure unit 20 and the lens body 10 is shown. The angle between the parallel light and the first surface 201 is α, and the angle between the light rays emitted from the rear surface of the lens and its normal is γ. The eye-to-lens distance is set to 12 mm. The human eye is approximately a sphere with a diameter of 24 mm. Through Snell's law and analytical geometry, α + γ ≈ 90° can be approximately obtained. The range of α is then determined by the range of γ values: 67.02° ≤ α ≤ 86.41°. In the calculation, the range of the tangent value of ∠γ is determined by the direct triangle containing ∠γ, and the range of angles is deduced to further calculate the range of α.

[0100] In some embodiments, further referring to Figures 15, 16, and 17, the imaging of a human eye model, a conventional defocus lens-human eye system, and the lens-human eye system containing prism microstructures of this embodiment are evaluated using the optical design software ZEMAX. In the figures, a represents blue light, b represents green light, and c represents red light.

[0101] Figure 15 shows ray tracing for ideal human eye imaging, with field angles set to 0°, 7.07°, and 10°. Blue ray a (0.51 μm as the main wavelength) passes through the optical zone (the area without microstructure) and can form a normal image at the center of the retina. Green ray b (0.56 μm) and red ray c (0.61 μm) are imaging rays for other fields of view of the human eye. They fall on the retina and can also form a normal image, but the image quality is somewhat reduced, as shown in the dot plot in Figure 18. The image center is offset by 2.0 mm (green) and 4.0 mm (red), respectively. The center of the blue ray is 0.0 mm, which is considered normal imaging.

[0102] Figures 16 and 17 show the ray tracing diagrams of a commonly used defocused lens (with a circular microstructure surface) and a lens with prism microstructure units, respectively. The field of view and wavelength parameters used are consistent with the human eye model. As can be seen from Figure 19, the corresponding dot plot parameters of the commonly used defocused lens are 4mm and 6mm, which can produce a certain offset compared to the normal imaging position to achieve the effect of improving myopia. However, when using a lens with prism microstructures, as shown in Figure 20, the imaging of the retina cannot be measured through the dot plot, and the degree of offset is greater than that of the defocused lens, at 6.4mm and 8.3mm respectively. Therefore, the lens with prism microstructures can deflect light to a greater extent.

[0103] In summary, compared to conventional defocus lenses, the lens of this embodiment introduces a first surface in the microstructure unit that can deflect incident light rays and deviate from the original light path, thereby further deviating the focal point from the macula of the retina and affecting image quality. It has the potential to suppress the further occurrence and development of refractive errors.

[0104] The foregoing has provided a detailed description of a lens and eyeglasses provided in the embodiments of this application, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lens, wherein, include: The lens body has a geometric center and an edge; Extending from the geometric center toward the edge, the lens body has an optical zone surrounding the geometric center and an adjustment zone surrounding the optical zone; the optical center of the optical zone coincides with the geometric center. A microstructure unit is disposed on the lens body and located in the adjustment area; the microstructure unit includes a plurality of first surfaces for receiving incident light; and the incident light, after passing through the first surfaces, is deflected so that the focal point deviates from the retina and forms a blurred image; The incident light ray has a minimum angle α with the first surface, satisfying: 0° < α < 90°.

2. The lens according to claim 1, wherein, The lens also satisfies the following condition: 65° < α < 90°.

3. The lens according to claim 1, wherein, The lens body includes a first optical surface near the eye and a second optical surface near the incident light, the first optical surface and the second optical surface being disposed opposite to each other; at least one of the first optical surface and the second optical surface is provided with the microstructure unit.

4. The lens according to claim 3, wherein, The microstructure unit is a protruding structure, and the microstructure unit also includes a second surface connected to the first surface. Multiple first surfaces and second surfaces surround and form the protruding structure. When the second surface is connected to the second optical surface, the first surface protrudes from the second surface toward the incident light. When the second surface is connected to the first optical surface, the first surface protrudes from the second surface toward the eye side.

5. The lens according to claim 3, wherein, The microstructure unit is a recessed structure, and the microstructure unit has an opening that penetrates at least one of the first optical surface and the second optical surface; The plurality of first surfaces face the opening and together define the recessed structure; When the opening penetrates the second optical surface, the first surface is connected to the second optical surface and extends from the second optical surface toward the eye side; When the opening penetrates the first optical surface, the first surface is connected to the first optical surface and extends from the first optical surface toward the incident light.

6. The lens according to claim 3, wherein, The number of microstructure units is multiple, and some of the multiple microstructure units are protruding structures and others are recessed structures; When the microstructure unit is the protruding structure, the microstructure unit further includes a second surface connected to the first surface, and a plurality of the first surfaces and the second surface surround to form the protruding structure; When the microstructure unit is the recessed structure, the recessed structure has an opening, and the plurality of first surfaces together define the recessed structure; The second surface is connected to the second optical surface, the opening penetrates the second optical surface, and the protruding structure and the recessed structure are spaced apart on the second optical surface in a direction extending from the geometric center to the edge; or, the second surface is connected to the first optical surface, the opening penetrates the first optical surface, and the protruding structure and the recessed structure are spaced apart on the first optical surface in a direction extending from the geometric center to the edge.

7. The lens according to claim 1, wherein, The first surface is a plane; or, the additional refractive power generated by the incident light after passing through the first surface is 0.

8. The lens according to claim 4, wherein, The number of microstructure units is multiple, and the multiple microstructure units are arranged at intervals between each other in the adjustment area.

9. The lens according to claim 4, wherein, The number of microstructure units is multiple, and at least two of the multiple microstructure units are connected to each other in the adjustment region.

10. The lens according to claim 9, wherein, Multiple microstructure units are connected end-to-end to form one or more rings, which are arranged around the geometric center; When there are multiple rings, the multiple rings are arranged in the adjustment area in a direction extending from the geometric center to the edge.

11. The lens according to claim 10, wherein, The ring can be either a circle or a regular polygon.

12. The lens according to claim 1, wherein, The minimum distance between the edge of the optical zone and the geometric center is 0.5 mm to 5 mm.

13. The lens according to claim 1, wherein, The optical zone is selected from either a circle or a regular polygon.

14. The lens according to claim 10, wherein, The adjustment area has an inner edge that is connected to the optical area and an outer edge that is away from the optical area. The inner edge coincides with the edge of the optical area, and the maximum distance between the outer edge and the geometric center is 15 mm to 35 mm. The outer edge on the lens body can be any of the following shapes: circular, polygonal, or irregular.

15. The lens according to claim 4, wherein, The microstructure unit satisfies one of the following conditions: The microstructure unit is selected from at least one of a triangular prism and an N-sided prism, where N is an integer greater than or equal to 4. The maximum height of the microstructure unit is 0.001 mm to 0.5 mm, and the minimum length of the second surface is 0.1 mm to 3 mm. The prism power of the microstructure unit is 1.0 cm / m to 20 cm / m; The microstructure unit is an irregular prism, and the shape of either the first surface or the second surface is selected from at least one of a circle, a regular polygon, and an irregular polygon.

16. A type of eyeglasses, wherein, The eyeglasses include lenses as described in any one of claims 1 to 15.

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