Point diffusion out-of-focus multi-effect lens

Abstract

The utility model discloses a point diffusion out-of-focus multi-effect lens, and relates to the technical field of vision prevention and control lenses. The point diffusion out-of-focus multi-effect lens is provided with the central optical area, the out-of-focus area and the light diffusion area, the out-of-focus area is located on the periphery of the central optical area, the light diffusion area comprises the diffusion point array to change light scattering so as to adjust the contrast ratio, the point diffusion area is matched with the out-of-focus area, and the vision delay effect is better; meanwhile, a plurality of out-of-focus rings are arranged to construct a plurality of out-of-focus areas, a microstructure array of the out-of-focus areas is arranged in a radial array mode, a structure with dense middle out-of-focus structures and sparse out-of-focus structures is formed, the physiological structure of human eyes is met, vision impediment is reduced, and the astigmatism problem of a wearer is solved; moreover, the out-of-focus zones in the adjacent out-of-focus annular zones are staggered in the circumferential direction, and the intervals between the out-of-focus zones in the adjacent out-of-focus annular zones are also staggered in the circumferential direction, so that the anisotropy of the out-of-focus zones is increased, the adaptation of a visual receptor is reduced, and the tolerance phenomenon is delayed.

Description

Technical Field

[0001] This utility model relates to the field of vision control lens technology, and in particular to a dot diffusion defocus multi-effect lens. Background Technology

[0002] Research has found that the visual signal-dependent mechanism of refractive development originates within the eye. The main visual signals influencing the intraocular emmetropization process include contrast and optical defocus. These two visual signals converge on a common pathway after passing through the retina, transmitted via retinal pigment epithelial cells. In the choroid, contrast and optical defocus signals alter choroidal thickness, ultimately affecting refractive power. Specifically, optical defocus can influence the emmetropization process by affecting the position of the retinal image, while contrast can influence the emmetropization process by adjusting the overall image contrast. The emmetropization process is essentially the myopia control process; in other words, common factors contributing to myopia, besides the distance of objects viewed (optical defocus), also include the contrast of the image. In particular, in daily life, minors frequently encounter high-brightness, high-contrast, and brightly colored electronic screens, whether viewing projection screens or electronic displays in classrooms, or various electronic signs, billboards, and information signs outdoors. These high-contrast light sources strongly stimulate the eyes, promoting axial elongation and accelerating the deterioration of myopia. In addition, in sunny weather outdoors, strong sunlight can also enter through the top of the eyeball, posing a potential threat to the retina.

[0003] Based on the above findings, existing technologies for providing lenses with vision control functions mainly fall into two categories: one category uses the defocus principle, which affects the emmetropization process by influencing the position of the retinal image, and the other category uses the contrast principle, which affects the emmetropization process by adjusting the contrast of the overall image. For example, dot diffusion lenses are lenses that use the contrast principle.

[0004] Considering the comprehensiveness of myopia control effects, existing technologies also provide a dual-suppression scheme utilizing defocus and contrast principles. For example, Chinese patent application CN202410262425.3 discloses a film-applied myopia control lens and a frame lens. The film-applied myopia control lens includes a lens with a film attached to it. The film has various types, each with different defocus amounts, and the defocus amount on each film varies irregularly in the radial and / or angular directions. The film includes a central optical zone, and outside the central optical zone are multiple annular dot diffusion zones, each consisting of numerous densely distributed diffusion points used to reduce contrast and brightness. Within the dot diffusion zones are multiple defocus zones interspersed with the diffusion points. This scheme, while adjusting the optical defocus visual signal through defocus microstructures, can also influence the emmetropization process by altering the contrast visual signal. The combination of dot diffusion zones and defocus zones results in a better vision slowing effect.

[0005] However, current dot diffusion zone defocused composite lenses typically use a single structure for the defocus zone. The single defocus zone setting leads to the problem of interventional astigmatism after prolonged wear. Moreover, the accommodative effect of traditional defocused frame lenses weakens with the extension of wearing time, that is, tolerance occurs, resulting in a reduction in myopia control. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a point-diffusion defocus multi-effect lens. The point-diffusion defocus multi-effect lens provided by this invention has a central optical zone, a defocus zone, and a light diffusion zone on the lens substrate. The defocus zone is located on the outer periphery of the central optical zone, and the light diffusion zone includes an array of diffusion points to change light scattering and adjust contrast. The point-diffusion zone and the defocus zone work together to achieve a better visual delay effect. Simultaneously, multiple defocus rings are used to construct multiple defocus zones. The microstructure array of the defocus zone adopts a radial array arrangement, forming a structure with dense defocus structures in the middle and sparser structures towards the outer edges, conforming to the physiological structure of the human eye, reducing visual obstruction, and improving astigmatism problems experienced by the wearer. Furthermore, the defocus bands in adjacent defocus rings are staggered circumferentially, and the intervals between the defocus bands of adjacent defocus rings are also staggered circumferentially, increasing the anisotropy of the defocus zone, reducing visual receptor adaptation, and thus delaying tolerance phenomena.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A point-diffusion defocus multi-effect lens includes a lens substrate, on which a central optical zone, a defocus zone, and a light diffusion zone are provided, with the defocus zone located on the outer periphery of the central optical zone;

[0009] The defocus area includes at least two defocus rings arranged concentrically. Each defocus ring includes multiple defocus bands radiating outward from the optical center of the lens substrate. The defocus bands are spaced apart, and the defocus bands in adjacent defocus rings are staggered in the circumferential direction. The spacing between the defocus bands in adjacent defocus rings is also staggered in the circumferential direction.

[0010] The light diffusion region includes an array of diffusion points, which are used to change light scattering to adjust contrast.

[0011] Furthermore, the center of the central optical zone coincides with the optical center of the lens substrate, and the central optical zone extends outward from the optical center to form a central visible area with a diameter of 5-10 mm.

[0012] The defocused area is located within a radius of 3 to 35 mm from the optical center, and the outer periphery of the defocused area is the edge area, which forms the peripheral visible area;

[0013] The distance between adjacent diffusion points within the light diffusion region ranges from 0.2 to 0.6 mm, the diameter of each diffusion point ranges from 0.1 to 0.5 mm, and the depth of each diffusion point ranges from 0.1 to 0.8 mm.

[0014] Furthermore, the light diffusion area and the defocus area are arranged overlappingly, with the area of ​​the light diffusion area being larger than that of the defocus area; or, the light diffusion area is located on one side of the defocus area and partially overlaps with the defocus area, with the area of ​​the light diffusion area accounting for 30% to 70% of the lens substrate area.

[0015] Furthermore, the light diffusion region includes a first diffusion point array and a second diffusion point array.

[0016] The first diffusion point array consists of multiple diffusion zones radiating outward from the optical center of the lens substrate, and the diffusion zones are arranged alternately with the defocus zones of the defocus area.

[0017] The second diffusion point array is a point diffusion ring arranged around the outer side of the defocus area.

[0018] Furthermore, the light diffusion region includes a third diffusion point array, which is a midpoint diffusion band located inside the defocus region;

[0019] The intermediate point diffusion zone fully covers the central optical area, or forms an inner point diffusion ring at the edge of the central optical area.

[0020] Furthermore, the spacing between the defocusing zones of adjacent defocusing rings is partially staggered in the circumferential direction, so that the spacing between adjacent defocusing rings is connected in the radial direction.

[0021] Alternatively, the spacing between the defocus zones of adjacent defocus rings is completely offset in the circumferential direction, so that the spacing between adjacent defocus rings is not connected in the radial direction.

[0022] Furthermore, a defocusing ring consists of multiple concentric rings, with several microlenses arranged on each concentric ring. Adjacent concentric rings are arranged adjacently or spaced apart, and the microlenses on the same concentric ring have the same defocusing degree.

[0023] Among them, the edges of microlenses located in the same concentric ring and belonging to the same defocus zone are adjacent, while microlenses located in the same concentric ring but belonging to different defocus zones are spaced apart; the extension lines of the radial center lines of each defocus zone all pass through the optical center of the lens substrate, and the width of each defocus zone increases outward from the minimum radius according to a preset width adjustment rule, so that the extension lines of the radial edge lines of the defocus zone all pass through the optical center of the lens substrate.

[0024] Furthermore, for each defocus ring, the microlenses on adjacent defocus rings have different defocus degrees to form high defocus rings and low defocus rings, which are alternately arranged on the defocus ring.

[0025] The microlenses on each defocus zone have the same defocus degree, or the defocus degree of the microlenses on each defocus zone gradually changes outward from the minimum radius according to a preset defocus degree adjustment rule.

[0026] Furthermore, there are two defocus rings, including a first defocus ring and a second defocus ring. The first defocus ring is located on the outer periphery of the edge of the central optical zone, and the second defocus ring is located on the outer periphery of the edge of the first defocus ring.

[0027] The first and second defocus rings have the same number of defocus zones, and the same number of microlenses are arranged in each defocus zone belonging to the same defocus ring according to the same arrangement rule;

[0028] The microlenses in the high and low defocus zones of the first defocus ring have defocus additional values ​​of a first defocus additional value and a second defocus additional value, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm, the value of the first defocus additional value ranges from +1.50D to +7.50D, and the value of the second defocus additional value ranges from +1.00D to +6.00D.

[0029] The microlenses in the high and low defocus zones of the second defocus ring have the third and fourth defocus addition degrees, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm. The value of the third defocus addition degree ranges from +2.00D to +8.00D, and the value of the fourth defocus addition degree ranges from +1.45D to +6.50D.

[0030] Furthermore, the first and second defocus rings are provided with 14 defocus zones, and the first and second defocus rings together include 19 concentric rings.

[0031] The first defocusing ring includes 9 concentric rings, and 22 microlenses are arranged on each defocusing ring. The number of microlenses on the 1st to 9th concentric rings of the defocusing ring are 1, 2, 2, 2, 3, 3, 3, 3 and 3, respectively, and the corresponding lens diameters are 1.43mm, 0.80mm, 0.96mm, 1.17mm, 0.8mm, 0.95mm, 1.07mm, 1.22mm and 1.37mm, respectively.

[0032] The second defocusing ring includes 10 concentric rings, with 50 microlenses arranged on each defocusing ring. The number of microlenses on the first to tenth concentric rings of the defocusing ring is 5 each, and the corresponding lens diameters are 0.82mm, 0.89mm, 0.96mm, 1.03mm, 1.11mm, 1.20mm, 1.28mm, 1.37mm, 1.47mm and 1.58mm, respectively.

[0033] Depending on the user's myopia level, the additional defocus power ranges of the microlenses in the high and low defocus zones of the first defocus ring are +3.0D to +4.5D and +1.5D to +3.5D, respectively. The additional defocus power ranges of the microlenses in the high and low defocus zones of the second defocus ring are +3.5D to +6.0D and +2.0D to +4.5D, respectively. The higher the myopia level, the greater the additional defocus power.

[0034] Compared with the prior art, this utility model, by adopting the above technical solution, has the following advantages and positive effects: The dot diffusion defocus multi-effect lens provided by this utility model has a central optical zone, a defocus zone, and a light diffusion zone on the lens substrate. The defocus zone is located on the outer periphery of the central optical zone, and the light diffusion zone includes a diffusion point array composed of multiple diffusion points to change light scattering and adjust contrast. The dot diffusion zone and the defocus zone work together to achieve a better visual delay effect. At the same time, multiple defocus rings are set to construct multiple defocus zones. The microstructure array of the defocus zone adopts a radial array arrangement, forming a structure with dense defocus structure in the middle and sparser defocus structure towards the outer edge, which conforms to the physiological structure of the human eye, reduces visual obstruction, and improves the astigmatism problem of the wearer. Moreover, the defocus bands in adjacent defocus rings are staggered in the circumferential direction, and the interval between the defocus bands of adjacent defocus rings is also staggered in the circumferential direction, increasing the anisotropy of the defocus zone, reducing visual receptor adaptation, and thus delaying tolerance phenomenon.

[0035] On the other hand, the structure of the diffusion points within the light diffusion region was optimized. Specifically, the distance between adjacent diffusion points was designed to be 0.2–0.6 mm, the diameter of each diffusion point was designed to be 0.1–0.5 mm, and the depth of each diffusion point was designed to be 0.1–0.8 mm.

[0036] Furthermore, the shape and layout of the light diffusion zone and defocus zone have been optimized to ensure both visual protection and wearing comfort.

[0037] Furthermore, the additional defocus power of the microstructures in the defocus zone was optimized based on the degree of myopia (refractive power of the central optical zone). Specifically, according to the user's degree of myopia, the additional defocus power ranges of the microlenses in the high and low defocus zones of the first defocus ring are +3.0D to +4.5D and +1.5D to +3.5D, respectively; and the additional defocus power ranges of the microlenses in the high and low defocus zones of the second defocus ring are +3.5D to +6.0D and +2.0D to +4.5D, respectively. The higher the degree of myopia, the greater the additional defocus power. Attached Figure Description

[0038] Figure 1 Schematic diagram of the structure of the dot diffusion defocus multi-effect lens provided in the embodiment of this utility model Figure 1 .

[0039] Figure 2 for Figure 1 A schematic diagram of the structure of the light diffusion region (fully covered by the central optical region).

[0040] Figure 3 A schematic diagram of another light diffusion region (the central optical region is not covered) provided in an embodiment of this utility model.

[0041] Figure 4 for Figure 1 A detailed structural diagram of the defocus zone in the image.

[0042] Figure 5 A detailed structural diagram of the completely staggered defocus zones provided for an embodiment of this utility model.

[0043] Figure 6 A detailed structural diagram of the alternating high defocus bands and low defocus bands provided in an embodiment of this utility model.

[0044] Figure 7 This is a schematic diagram of the structure of a point diffusion defocusing multi-effect lens with different defocus degrees provided in the embodiment of this utility model.

[0045] Figure 8 for Figure 7 A detailed structural diagram of the defocus zone and light diffusion region.

[0046] Figure 9 This is a schematic diagram of a structure in which the defocus zone and the light diffusion zone are arranged alternately (without overlapping) according to an embodiment of the present invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10 Dot diffusion defocus multi-effect lens;

[0049] central optical zone 110;

[0050] Defocus area 120, first defocus ring 121, first interval 1210, second defocus ring 122, second interval 1220, defocus bands 1211 and 1221, radial center lines 12111 and 12211, radial edge lines 12112 and 12212;

[0051] Light diffusion region 130;

[0052] Edge area 140;

[0053] Optical center P. Detailed Implementation

[0054] The dot-diffusion defocus multi-effect lens disclosed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be considered isolated; they can be combined with each other to achieve better technical effects. In the accompanying drawings of the following embodiments, the same reference numerals appearing in each drawing represent the same features or components, which can be applied to different embodiments. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0055] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the utility model. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the utility model, should fall within the scope of the technical content disclosed in the utility model. The scope of the preferred embodiments of this utility model includes other implementations, wherein functions may be performed not in the order stated or discussed, including substantially simultaneously or in reverse order, according to the functions involved. This should be understood by those skilled in the art to which the embodiments of this utility model pertain.

[0056] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0057] In the description of the embodiments of this application, " / " means "or", and "and / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" means: A and B exist alone, B exists alone, and A and B exist simultaneously. In the description of the embodiments of this application, "multiple" refers to two or more.

[0058] Explanation of technical terms:

[0059] Refractive power: When light rays travel from one object to another substance with a different optical density, their direction of propagation is deflected. This phenomenon is called refraction, and refractive power is used to express the magnitude of this refractive phenomenon (refractive capacity). Diopter (or focal power) is the unit of refractive power, denoted by D. When parallel light rays pass through a refractive material, the refractive power of that material at a focal point of 1m is defined as 1 diopter or 1D. Example

[0060] See Figure 1 As shown, this utility model provides a point diffusion defocus multi-effect lens 10 for vision control. It includes a lens substrate with a base surface, and a central optical zone 110, a defocus zone 120 and a light diffusion zone 130 are provided on the lens substrate. The defocus zone 120 is located on the outer periphery of the central optical zone 110.

[0061] The lens substrate is preferably circular and can be configured to have a diameter of 50-70 mm. The substrate material of the lens substrate is formed, for example, from thermosetting resin materials such as thiocarbamate, allyl, acrylic, or cyclic sulfur resins. Furthermore, other resin materials that achieve the desired refractive index can also be selected as the resin material constituting the lens substrate. Alternatively, the lens substrate can be made of inorganic glass instead of a resin material; this is not a limitation.

[0062] The central optical region 110 can be located in the central area of ​​the lens substrate, based on the optical center of the lens substrate, and constitutes the central visible area (or visible area) of the lens. Specifically, the center of the central optical region 110 coincides with the optical center of the lens substrate, and the central optical region extends outward from this optical center. Depending on the needs, the central optical region 110 can be circular, elliptical, regular polygonal, quasi-elliptical, or irregular in shape.

[0063] In this embodiment, the shape of the central optical area 110 is preferably circular, and the diameter of the circle can be 4-12mm, preferably 5-10mm.

[0064] The defocus region 120 is located on the outer periphery of the central optical region 110 and is a microstructured area used to suppress the development of refractive errors in the eye. The defocus region 120 can be located within a radius of 3-35 mm from the optical center.

[0065] The defocus region 120 includes at least two concentric defocus rings extending from the outer periphery of the central optical region 110 towards the edge of the lens substrate. Each defocus ring includes multiple defocus bands radiating outward from the optical center of the lens substrate, extending from the minimum radius of the defocus region 120 to the maximum radius. The defocus bands are spaced apart, with adjacent defocus rings circumferentially offset, and the spacing between adjacent defocus bands is also circumferentially offset. Specifically, the microstructure of the defocus region 120 can employ microlenses, with each defocus band potentially featuring a microlens array composed of multiple microlenses. The refractive power (i.e., focal power) of the microlenses in the microlens array differs from that of the lens substrate.

[0066] Understandably, as an optional implementation, the defocus area 120 can be arranged from the edge of the central optical area to the edge of the lens; alternatively, it can not be arranged to the edge of the lens. In this case, an edge area 140 is left between the defocus area 120 and the edge of the lens—that is, an edge area 140 is provided around the defocus area 120. See [link to relevant documentation]. Figure 1 As shown, the edge region 140 is an optical region based on the lens substrate, forming a peripheral visible area, which can play a role in assisting in vision correction.

[0067] The light diffusion region 130 includes an array of diffusion points, which are used to change light scattering to adjust contrast. Specifically, the diffusion points of the light diffusion region 130 can be circular grooves or circular protrusions with a frosted texture.

[0068] In specific configurations, a defocusing region 120 and a light diffusion region 130 can be respectively set on the two optical surfaces of the lens substrate—the first optical surface (outer side) and the second optical surface (inner side). For example, the defocusing lens microstructure in the defocusing region can be set on the outer side of the first optical surface, and the dot-diffusion frosted microstructure in the light diffusion region can be set on the inner side of the second optical surface. The specific method for setting the defocusing lens microstructure in the defocusing region and the dot-diffusion frosted microstructure in the light diffusion region can be to form several microstructures by laser engraving on the optical surface of the lens substrate (for example, by photolithography on the lens substrate using high-precision optical modulation micro-nano lithography technology), or by film application (different microstructure film layers are applied to the two optical surfaces respectively), and there are no restrictions here.

[0069] The above scheme controls myopia through the defocus zone 120, while the diffusion point of the light diffusion zone 130 can change the scattering of light by diffusing the light. The diffused light reduces the high contrast of the L and M cone cells of the retina, thereby reducing the contrast of the image. The composite design of the contrast visual signal and the optical defocus visual signal changes the thickness of the choroid, which ultimately affects the change of refractive power and achieves the effect of myopia control.

[0070] Preferably, the distance between adjacent diffusion points within the light diffusion region ranges from 0.2 to 0.6 mm, the diameter of each diffusion point ranges from 0.1 to 0.5 mm, and the depth of each diffusion point ranges from 0.1 to 0.8 mm. As a typical preferred embodiment, the distance between adjacent diffusion points is preferably 0.4 mm, the diameter of each diffusion point is preferably 0.2 mm, and the depth of each diffusion point is preferably 0.4 mm.

[0071] In one embodiment of this example, the light diffusion region 130 and the defocus region 120 are arranged in an overlapping manner, and the area of ​​the light diffusion region 130 is preferably larger than the area of ​​the defocus region 120.

[0072] The light diffusion region 130 can cover the central optical region 110, see [link / reference] Figure 1 and Figure 2 As shown, at this time, the central optical area, which serves as the optical correction area, is fully covered by the light diffusion area 130, which can be used to balance the visual contrast of the optical correction area. At this time, recessed diffusion points are uniformly distributed within the light diffusion area to form a circular diffusion point array, and the radius of the circular diffusion point array is larger than the width of the defocus ring of the defocus area.

[0073] The light diffusion region 130 may also not cover the central optical region 110. See [link to relevant documentation] Figure 3As shown, this structure is suitable for situations where the visual contrast of the optical correction area does not need to be adjusted. In this case, recessed diffusion points are uniformly distributed within the light diffusion area 130 to form a ring-shaped diffusion point array, the width of which is greater than the width of the defocus ring of the defocus area.

[0074] In another embodiment of this invention, the light diffusion region 130 may be located on one side (upper or lower half) of the defocus region 120 and partially overlap with the defocus region. Preferably, the light diffusion region 130 is mainly located on the upper half of the defocus region 120, and the area of ​​the light diffusion region 130 accounts for 30% to 70% of the lens substrate area. In this case, recessed diffusion points are uniformly distributed in the light diffusion region to form a crescent-shaped diffusion point array, and the outer edge of the diffusion point array coincides with the outer edge of the lens substrate.

[0075] In another embodiment of this example, the microstructures of the light diffusion region and the microstructures of the defocus region are arranged in an alternating manner, and their microstructures do not overlap.

[0076] At this point, it is more appropriate for the light diffusion region to include a first diffusion point array and a second diffusion point array.

[0077] The first diffusion point array consists of multiple diffusion bands radiating outward from the optical center of the lens substrate. The diffusion bands are arranged alternately with the defocus bands in the defocus area, that is, the diffusion bands are set between the defocus bands in the defocus area.

[0078] The second diffusion point array is a dot diffusion ring set around the outer edge of the defocus area, that is, a dot diffusion ring is set at the outer periphery of the defocus area.

[0079] More preferably, the light diffusion region may also include a third diffusion point array, which is a midpoint diffusion band located inside the defocus region.

[0080] The intermediate point diffusion band can fully cover the central optical area 110, or it can only form an inner point diffusion ring band at the edge of the central optical area, that is, it does not cover the middle area of ​​the central optical area 110, but only forms a ring of point diffusion bands at the edge of the central optical area 110.

[0081] In this embodiment, the lens substrate itself can be a refractive corrective lens. In this case, the central optical zone 110 is a prescription area for correcting refractive errors in the eye. Light rays entering through the central optical zone of the lens substrate exit the lens substrate and converge onto the retina via the eye. Taking myopia control glasses as an example, multiple microlenses in the defocus zone can focus an image of an object in front of the retina (forming defocus). The refractive power of the microlenses is in the range of +1.50D to +8.50D of the refractive power of the lens substrate.

[0082] The surface shape of the defocus microlens can be selected from at least one of spherical, aspherical, torus, cylindrical, and freeform surfaces. The diameter of the microlens can be 0.1-3 mm, and each microlens is in contact with the lens substrate region and protrudes from the base surface of the lens substrate. Preferably, the diameter of the microlens is about 0.5-2.0 mm, and the protrusion height (protrusion amount) of the microlens is about 0.1-10 μm, preferably about 0.4-2.0 μm.

[0083] As a preferred typical approach, the defocusing zone 120 is configured with two defocusing rings, see [reference]. Figure 1 and Figure 4 As shown, it includes a first defocus ring 121 and a second defocus ring 122. The first defocus ring 121 is located on the outer periphery of the edge of the central optical zone and is arranged in a gradually changing pattern around the central optical zone 110. The second defocus ring 122 is located on the outer periphery of the edge of the first defocus ring 121 and is arranged in a gradually changing pattern around the first defocus ring 121.

[0084] Each of the aforementioned defocus rings includes multiple defocus zones radiating outward from the optical center of the lens substrate (arranged radially), with the defocus zones spaced apart. See [link to relevant documentation]. Figure 4 As shown, a first spacing band 1210 is formed between the defocus bands 1211 of the first defocus ring band 121, and a second spacing band 1220 is formed between the defocus bands 1221 of the second defocus ring band 122.

[0085] The extension lines of the radial center lines of each defocus zone 1211 and 1221 all pass through the optical center of the lens substrate, and the width of each defocus zone 1211 and 1221 increases outward from the minimum radius of the corresponding area according to a preset width adjustment rule, so that the extension lines of the radial edge lines of the defocus zone (i.e. the contour lines formed by the defocus zone on both sides) all pass through the optical center of the lens substrate.

[0086] In this embodiment, the defocus zones in adjacent defocus rings are staggered in the circumferential direction (i.e., the circumferential direction of the lens substrate). At the same time, the spacing between the defocus zones in adjacent defocus rings is also staggered in the circumferential direction. Correspondingly, the radial (i.e., the diameter direction of the lens substrate) center lines of the defocus zones in adjacent defocus rings are staggered by a certain angle (the radial center lines do not coincide), and the radial center lines of the spacing zones in adjacent defocus rings are also staggered by a certain angle (the radial center lines do not coincide).

[0087] Specifically, for the first defocus ring 121, the extension lines of the radial center lines 12111 of each defocus zone 1211 all pass through the optical center P of the lens substrate. Simultaneously, the width of each defocus zone 1211 increases outwards from the minimum radius of the defocus area 120 according to a preset width adjustment rule, so that the extension lines of the radial edge lines 12112 of each defocus zone 1211 all pass through the optical center P of the lens substrate. For the second defocus ring 122, the extension lines of the radial center lines 12211 of each defocus zone 1221 all pass through the optical center P of the lens substrate, and the width of each defocus zone 1221 increases outwards from the minimum radius of the second defocus ring 122 according to a preset width adjustment rule, so that the extension lines of the radial edge lines 12212 of each defocus zone 1221 all pass through the optical center P of the lens substrate.

[0088] It should be noted that the lens substrate itself can also be a plano lens. In this case, the central optical zone 110 is a non-refractive optical zone, while the defocus zone 120 is a microstructured area used to suppress the development of refractive errors in the eye. Depending on the needs, such lenses can be combined with conventional myopia / hyperopia corrective lenses or other functional lenses. For example, the aforementioned lens with defocus function can be mounted on the main frame or additional frame of a double-layer eyeglass frame, or on a modular eyeglass frame where the wearer can freely switch between lenses, nose pads, and temples.

[0089] In this embodiment, the spacing between adjacent defocus rings can be partially staggered in the circumferential direction, so that the spacing between adjacent defocus rings is connected in the radial direction. See [reference needed]. Figure 4 As shown, the first spacer 1210 and the second spacer 1220 are connected in the radial direction of the lens.

[0090] Alternatively, the spacing between adjacent defocus rings is completely offset circumferentially, so that the spacing between adjacent defocus rings is not connected radially. See also Figure 5 As shown, the first spacer 1210 and the second spacer 1220 are separated in the radial direction of the lens, that is, they are not connected.

[0091] It should be noted that, compared to a completely staggered defocus band design, the spacing between the partially staggered defocus bands is continuous, which reduces visual obstruction and improves wearing comfort. Furthermore, the spacing distance between the defocus bands (spacing width) should not be set too large to ensure the defocusing effect. The specific spacing width can be designed based on the size of the microlenses on the defocus bands and the wearer's eye prescription information; this is existing technology and will not be elaborated upon here.

[0092] In a typical implementation, a defocusing ring can consist of multiple concentric rings, each with several microlenses arranged on it. Adjacent concentric rings are either adjacent (without a ring gap) or spaced apart (with a ring gap), with the ring gap distance specifically ranging from 1.0 to 2.0 mm. The microlenses on the same concentric ring have the same defocusing power.

[0093] In this design, microlenses located within the same concentric ring and belonging to the same defocus zone are adjacent at their edges; microlenses located within the same concentric ring but belonging to different defocus zones are spaced apart. It should be noted that "adjacent" means the microlenses are touching or nearly touching, in which case the distance between the microlens edges needs to be less than a preset distance threshold—for example, 0.1 mm; that is, the distance between the microlens edges is between 0 and 0.1 mm. "Spaced apart" means that there is a significant distance interval between the microlenses, in which case the distance between the microlens edges needs to be greater than a preset distance threshold—for example, 0.5 mm.

[0094] More preferably, for each defocus ring, the defocus degree of the microlenses on adjacent defocus rings can be set to be different to form high defocus rings and low defocus rings, wherein the high defocus rings and low defocus rings are preferably alternately arranged on the defocus rings.

[0095] See Figure 6 As shown, a high defocus zone and a low defocus zone are illustrated, arranged in an alternating pattern of high, low, high, low... within the defocus area. In this case, two adjacent high defocus zones are separated by a low defocus zone, and two adjacent low defocus zones are separated by a high defocus zone. It should be noted that the high defocus zone is relative to the low defocus zone, and the low defocus zone is relative to the high defocus zone.

[0096] The defocus power of the microlenses on each defocus zone can be the same or different. When the defocus power of the microlenses on each defocus zone is set differently, the defocus power of the microlenses on each defocus zone can be gradually changed from the minimum radius outward according to a preset defocus adjustment rule, such as gradually increasing or gradually decreasing the defocus power. The specific design can be based on the wearer's prescription test information.

[0097] In a preferred embodiment of this example, the number of defocusing bands on the first defocusing ring 121 and the second defocusing ring 122 is the same, and the same number of microlenses are arranged according to the same rule in each defocusing band belonging to the same defocusing ring. That is, the arrangement and number of microlenses in each defocusing band of the first defocusing ring 121 are the same, and the arrangement and number of microlenses in each defocusing band of the second defocusing ring 122 are the same, but the arrangement and number of microlenses in the defocusing bands of the first defocusing ring 121 and the second defocusing ring 122 are different. Furthermore, both the first defocusing ring 121 and the second defocusing ring 122 adopt an alternating arrangement of high defocusing bands and low defocusing bands, and the additional defocus power of the high defocusing bands and low defocusing bands of the first defocusing ring 121 and the second defocusing ring 122 are different. The defocus power of the microlenses belonging to the same defocusing band can be the same value.

[0098] The microlenses of the high and low defocus zones of the first defocus ring have defocus addition values ​​of first defocus addition and second defocus addition, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm. The value of the first defocus addition ranges from +1.50D to +7.50D, and the value of the second defocus addition ranges from +1.00D to +6.00D.

[0099] The microlenses in the high and low defocus zones of the second defocus ring have the third and fourth defocus addition degrees, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm. The value of the third defocus addition degree ranges from +2.00D to +8.00D, and the value of the fourth defocus addition degree ranges from +1.45D to +6.50D.

[0100] As a preferred typical approach, see [reference needed]. Figure 7 and Figure 8 As shown, an example is illustrated where 14 defocus bands are provided on the first defocus ring band 121 and the second defocus ring band 122. The first defocus ring band 121 and the second defocus ring band 122 together include 19 concentric rings (i.e., the defocus area 120 includes 19 concentric rings).

[0101] The first defocusing ring includes 9 concentric rings, and 22 microlenses are arranged on each defocusing ring. The number of microlenses on the 1st to 9th concentric rings of the defocusing ring are 1, 2, 2, 2, 3, 3, 3, 3 and 3, respectively, and the corresponding lens diameters are 1.43mm, 0.80mm, 0.96mm, 1.17mm, 0.8mm, 0.95mm, 1.07mm, 1.22mm and 1.37mm, respectively.

[0102] The second defocusing ring includes 10 concentric rings, with 50 microlenses arranged on each defocusing ring. The number of microlenses on the first to tenth concentric rings of the defocusing ring is 5 each, and the corresponding lens diameters are 0.82mm, 0.89mm, 0.96mm, 1.03mm, 1.11mm, 1.20mm, 1.28mm, 1.37mm, 1.47mm and 1.58mm, respectively.

[0103] Depending on the user's myopia level, the additional defocus power of the microlenses in the high and low defocus zones of the first defocus ring ranges from +3.0D to +4.5D and +1.5D to +3.5D, respectively. The additional defocus power of the microlenses in the high and low defocus zones of the second defocus ring ranges from +3.5D to +6.0D and +2.0D to +4.5D, respectively. The higher the myopia level, the greater the additional defocus power.

[0104] Preferably, when the user's myopia in the prescription is 0-200 degrees (less than or equal to 200 degrees), it belongs to the low myopia level. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the first defocus ring is preferably +3.08D and +1.98D, respectively. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the second defocus ring is preferably +3.58D and +2.48D, respectively.

[0105] When the user's myopia in the prescription is 200-400 degrees (greater than 200 degrees and less than or equal to 400 degrees), it belongs to the moderate myopia level. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the first defocus ring is preferably +3.68D and +2.58D, respectively. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the second defocus ring is preferably +4.38D and +3.28D, respectively.

[0106] When the user's myopia in the prescription is 400-600 degrees (greater than 400 degrees and less than or equal to 600 degrees), it belongs to the relatively high myopia level. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the first defocus ring is preferably +4.08D and +2.98D, respectively. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the second defocus ring is preferably +4.98D and +3.88D, respectively.

[0107] When the user's myopia in the prescription is greater than 600 degrees, it belongs to the high myopia level. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the first defocus ring is preferably +4.28D and +3.18D, respectively. The defocus additional power of the microlenses in the high defocus zone and low defocus zone of the second defocus ring is preferably +5.38D and +4.28D, respectively.

[0108] It should be noted that, Figure 7 and Figure 8In this example, the microstructures of the light diffusion region and the defocus region are arranged in an overlapping manner. This is not a limitation; for instance, the microstructures of the light diffusion region and the defocus region can also be arranged in an interleaved manner, i.e., the microstructures do not overlap. See also Figure 9 As shown, the light diffusion region can include a first diffusion point array and a second diffusion point array. The diffusion point array formed by the first diffusion point array is located between two defocus zones, and the second diffusion point array is a point diffusion ring set around the outside of the defocus region (part of the ring is shown in the figure).

[0109] Furthermore, as needed, a third diffusion point array can be set in the central optical zone to form a mid-point diffusion zone. Additionally, the defocus zone of the lens can be designed with asymmetrical defocus on the nasal and temporal sides, with the defocus of the microlens area of ​​the nasal defocus zone being greater than that of the temporal defocus zone (myopic defocus in the nasal and temporal retina exhibits an asymmetrical phenomenon, with the temporal side showing greater defocus than the nasal side), to ensure that the human eye obtains a similar defocus effect when viewing near and far objects. Furthermore, the density of the diffusion points in the light diffusion zone can be adjusted; for example, the density of diffusion points on one half of the lens can be greater than that on the other half, creating a different contrast between the two halves, thereby correcting unilateral strabismus in the user.

[0110] In the above description, the disclosure of this utility model is not intended to limit itself to these aspects. Rather, within the scope of the target protection of this disclosure, the components can be selectively and operationally combined in any number. Furthermore, terms such as "comprising,"

[0111] The terms “encompassing” and “having” should be interpreted by default as inclusive or open-ended, rather than exclusive or closed, unless explicitly defined as such. All technical, scientific, or other terms shall be interpreted as understood by one of those skilled in the art, unless explicitly defined as such. Public terms found in dictionaries should not be interpreted in the context of the relevant technical documentation in an overly idealistic or impractical manner, unless explicitly defined as such in this disclosure. Any modifications or alterations made by one of ordinary skill in the art based on the foregoing disclosure are within the scope of the claims.

Claims

1. A dot-diffusion defocusing multi-effect lens, comprising a lens substrate, characterized in that: The lens substrate is provided with a central optical zone, a defocus zone and a light diffusion zone, with the defocus zone located on the outer periphery of the central optical zone; The defocus area includes at least two defocus rings arranged concentrically. Each defocus ring includes multiple defocus bands radiating outward from the optical center of the lens substrate. The defocus bands are spaced apart, and the defocus bands in adjacent defocus rings are staggered in the circumferential direction. The spacing between the defocus bands in adjacent defocus rings is also staggered in the circumferential direction. The light diffusion region includes an array of diffusion points, which are used to change light scattering to adjust contrast.

2. The dot-diffusion defocus multi-effect lens according to claim 1, characterized in that: The center of the central optical zone coincides with the optical center of the lens substrate. The central optical zone extends outward from the optical center to form the central visible area, which has a diameter of 5-10 mm. The defocused area is located within a radius of 3 to 35 mm from the optical center, and the outer periphery of the defocused area is the edge area, which forms the peripheral visible area; The distance between adjacent diffusion points within the light diffusion region ranges from 0.2 to 0.6 mm, the diameter of each diffusion point ranges from 0.1 to 0.5 mm, and the depth of each diffusion point ranges from 0.1 to 0.8 mm.

3. The dot diffusion defocus multi-effect lens according to claim 1, characterized in that: The light diffusion area and the defocus area are arranged in an overlapping manner, with the area of ​​the light diffusion area being larger than that of the defocus area; or, the light diffusion area is located on one side of the defocus area and partially overlaps with the defocus area, with the area of ​​the light diffusion area accounting for 30% to 70% of the lens substrate area.

4. The dot-diffusion defocus multi-effect lens according to claim 1, characterized in that: The light diffusion region includes a first diffusion point array and a second diffusion point array. The first diffusion point array consists of multiple diffusion zones radiating outward from the optical center of the lens substrate, and the diffusion zones are arranged alternately with the defocus zones of the defocus area. The second diffusion point array is a point diffusion ring arranged around the outer side of the defocus area.

5. The dot-diffusion defocus multi-effect lens according to claim 4, characterized in that: The light diffusion region includes a third diffusion point array, which is a midpoint diffusion band located inside the defocus region. The intermediate point diffusion zone fully covers the central optical area, or forms an inner point diffusion ring at the edge of the central optical area.

6. The dot-diffusion defocus multi-effect lens according to any one of claims 1-5, characterized in that: The spacing between the defocusing zones of adjacent defocusing rings is partially staggered in the circumferential direction, so that the spacing between adjacent defocusing rings is connected in the radial direction. Alternatively, the spacing between the defocus zones of adjacent defocus rings is completely offset in the circumferential direction, so that the spacing between adjacent defocus rings is not connected in the radial direction.

7. The dot-diffusion defocus multi-effect lens according to claim 6, characterized in that: A defocusing ring consists of multiple concentric rings, with several microlenses arranged on each concentric ring. Adjacent concentric rings are arranged adjacently or spaced apart, and the microlenses on the same concentric ring have the same defocusing degree. Among them, the edges of microlenses located in the same concentric ring and belonging to the same defocus zone are adjacent, while microlenses located in the same concentric ring but belonging to different defocus zones are spaced apart; the extension lines of the radial center lines of each defocus zone all pass through the optical center of the lens substrate, and the width of each defocus zone increases outward from the minimum radius according to a preset width adjustment rule, so that the extension lines of the radial edge lines of the defocus zone all pass through the optical center of the lens substrate.

8. The dot-diffusion defocus multi-effect lens according to claim 7, characterized in that: For each defocus ring, the microlenses on adjacent defocus rings have different defocus degrees to form high defocus rings and low defocus rings, which are alternately arranged on the defocus ring. The microlenses on each defocus zone have the same defocus degree, or the defocus degree of the microlenses on each defocus zone gradually changes outward from the minimum radius according to a preset defocus degree adjustment rule.

9. The dot-diffusion defocus multi-effect lens according to claim 8, characterized in that: There are two defocus rings, including a first defocus ring and a second defocus ring. The first defocus ring is located on the outer periphery of the edge of the central optical zone, and the second defocus ring is located on the outer periphery of the edge of the first defocus ring. The first and second defocus rings have the same number of defocus zones, and the same number of microlenses are arranged in each defocus zone belonging to the same defocus ring according to the same arrangement rule; The microlenses in the high and low defocus zones of the first defocus ring have defocus additional values ​​of a first defocus additional value and a second defocus additional value, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm, the value of the first defocus additional value ranges from +1.50D to +7.50D, and the value of the second defocus additional value ranges from +1.00D to +6.00D. The microlenses in the high and low defocus zones of the second defocus ring have the third and fourth defocus addition degrees, respectively. The diameter of the microlenses ranges from 0.50 mm to 2.00 mm. The value of the third defocus addition degree ranges from +2.00D to +8.00D, and the value of the fourth defocus addition degree ranges from +1.45D to +6.50D.

10. The dot-diffusion defocus multi-effect lens according to claim 8, characterized in that: The first and second defocus rings have 14 defocus zones, and the first and second defocus rings together consist of 19 concentric rings. The first defocusing ring includes 9 concentric rings, and 22 microlenses are arranged on each defocusing ring. The number of microlenses on the 1st to 9th concentric rings of the defocusing ring are 1, 2, 2, 2, 3, 3, 3, 3 and 3, respectively, and the corresponding lens diameters are 1.43mm, 0.80mm, 0.96mm, 1.17mm, 0.8mm, 0.95mm, 1.07mm, 1.22mm and 1.37mm, respectively. The second defocusing ring includes 10 concentric rings, with 50 microlenses arranged on each defocusing ring. The number of microlenses on the first to tenth concentric rings of the defocusing ring is 5 each, and the corresponding lens diameters are 0.82mm, 0.89mm, 0.96mm, 1.03mm, 1.11mm, 1.20mm, 1.28mm, 1.37mm, 1.47mm and 1.58mm, respectively. Depending on the user's myopia level, the additional defocus power ranges of the microlenses in the high and low defocus zones of the first defocus ring are +3.0D to +4.5D and +1.5D to +3.5D, respectively. The additional defocus power ranges of the microlenses in the high and low defocus zones of the second defocus ring are +3.5D to +6.0D and +2.0D to +4.5D, respectively. The higher the myopia level, the greater the additional defocus power.

Images