Spectacle lens with defocus function and spectacles
By using a microlens design with multiple defocus areas and a radial array, the problem of axial elongation and decreased visual quality caused by traditional lenses is solved, thus improving myopia accommodation and wearing comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LIANGMING TECH DEV
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional single-vision lenses cause hyperopia or myopia defocus, leading to axial elongation or shortening, further worsening myopia or hyperopia. Moreover, prolonged wear can result in decreased visual quality and astigmatism, and reduced tolerance.
The design of spectacle lenses with multiple defocus areas involves setting multiple defocus rings and radially arranged microlenses to form a defocus structure that is dense in the middle and sparse at the periphery. Adjacent defocus rings are staggered, and the defocus power of the microlenses is set alternately, which conforms to the physiological structure of the human eye.
It effectively corrects myopia, reduces astigmatism, improves wearing comfort, delays tolerance, and improves visual quality.
Smart Images
Figure CN224263497U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of defocus lens technology, and in particular to a spectacle lens and spectacle with defocus function. Background Technology
[0002] Traditional eyeglasses are primarily used to correct vision in eyes with existing refractive errors (such as myopia and hyperopia). The lenses in these glasses typically act as a remedial solution to the eye's defects. Taking myopia correction glasses as an example, conventional myopia correction lenses (concave lenses) are mostly single-vision lenses. When worn, the central light rays focus on the retina, while the peripheral light focuses behind the retina, resulting in hyperopia defocus. Hyperopia correction lenses (convex lenses) do the opposite, causing myopia defocus. Research shows that due to hyperopia or myopia defocus, the focusing pattern of these single-vision lenses causes the eye to grow towards the back or front of the retina, leading to an increase or decrease in the axial length of the eye. This causes the refractive state of the eyeball to deteriorate in the opposite direction, further worsening myopia or hyperopia, especially in children during their developmental period. Therefore, there is a greater desire for proactive control of refractive errors to prevent further vision deterioration. Based on this, eyeglass lenses are being developed from traditional single-vision lenses into new functional lenses with myopia mitigation effects.
[0003] Currently, lenses with microstructures have gradually become the mainstream in myopia control frames. These lenses utilize surface microstructures—such as microlenses—to create defocused visual interference for myopia. Many domestic and international manufacturers, such as Zeiss, Essilor, Hoya, and Ora, have developed their own defocused lenses. The basic principle behind these lenses is to use microlenses on the lens surface to move the image in front of the retina, creating a myopia defocus state where the peripheral image of the retina is focused in front of the retina, thereby controlling myopia progression and correcting vision. The defocus theory has been verified and recognized by optometry experts both domestically and internationally, and will not be discussed further here.
[0004] However, the traditional single defocus zone design leads to interventional astigmatism after prolonged wear. Furthermore, in practical applications, it has been found that while defocus lenses can suppress the progression of myopia / hyperopia, they reduce the wearer's visual quality (the surface structure of the lens element reduces visual acuity), making it difficult to achieve a satisfactory wearing experience. Additionally, actual fitting procedures have shown that the best results from traditional defocus frame lens designs occur in the first six months or year, after which the effect diminishes. In other words, the accommodative effect of defocus lenses weakens with prolonged wear, a phenomenon known as tolerance. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a spectacle lens and glasses with defocus function. The defocus spectacle lens provided by this invention constructs multiple defocus areas by setting multiple defocus rings, effectively adjusting and improving myopia while also improving astigmatism. Simultaneously, the microstructure array of the defocus area 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 wearing comfort. Furthermore, the defocus bands in adjacent defocus rings are staggered circumferentially, and the intervals between the defocus bands in adjacent defocus rings are also staggered circumferentially, increasing the anisotropy of the defocus area, reducing visual receptor adaptation, and thus delaying tolerance.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A spectacle lens with defocus function includes a lens substrate, on which a central optical zone and a defocus zone are provided, the defocus zone being located on the outer periphery of the central optical zone;
[0008] The defocus area includes at least two defocus rings arranged concentrically, and each defocus ring includes multiple defocus zones radiating outward from the optical center of the lens substrate, with the defocus zones spaced apart from each other.
[0009] In this design, the defocus zones in adjacent defocus rings are staggered circumferentially, and the intervals between the defocus zones in adjacent defocus rings are also staggered circumferentially.
[0010] Furthermore, the spacing between the defocus zones of adjacent defocus rings is partially staggered in the circumferential direction, so that the spacing between adjacent defocus rings is connected in the radial direction.
[0011] Furthermore, the spacing between the defocus zones of adjacent defocus rings is completely staggered in the circumferential direction, so that the spacing between adjacent defocus rings is not connected in the radial direction.
[0012] 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.
[0013] 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 of the defocus area 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.
[0014] 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.
[0015] 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.
[0016] 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 area, and the second defocus ring is located on the outer periphery of the edge of the first defocus ring.
[0017] 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;
[0018] 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 0.50mm to 2.00mm, the value of the first defocus additional value ranges from +1.50D to +4.50D, and the value of the second defocus additional value ranges from +1.00D to +3.00D.
[0019] The microlenses in the high and low defocus zones of the second defocus ring have a third defocus additional degree and a fourth defocus additional degree, respectively. The diameter of the microlenses ranges from 0.50mm to 2.00mm. The value of the third defocus additional degree ranges from +2.00D to +5.00D, and the value of the fourth defocus additional degree ranges from +1.45D to +3.50D.
[0020] 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. The defocus addition power of the microlenses in the high and low defocus zones of the first defocus ring is +3.08D and +1.98D, respectively, and the defocus addition power of the microlenses in the high and low defocus zones of the second defocus ring is +3.58D and +2.48D, respectively.
[0021] The first defocusing ring includes nine concentric rings, with 22 microlenses arranged on each defocusing ring. The number of microlenses on the first to ninth concentric rings of the defocusing ring are 1, 2, 2, 2, 3, 3, 3, 3, and 3, respectively, and the corresponding lens diameters are 1.43 mm, 0.80 mm, 0.96 mm, 1.17 mm, 0.8 mm, 0.95 mm, 1.07 mm, 1.22 mm, and 1.37 mm, respectively.
[0022] 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.
[0023] 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; the central optical zone is circular, elliptical, regular polygonal, quasi-elliptical, or irregular in shape.
[0024] The radius of the central optical zone or the radius of the circumscribed circle is 3-8mm, which constitutes the central visible area of the lens;
[0025] The defocused area is located within a radius of 3-35mm from the optical center;
[0026] The outer periphery of the defocused area is the edge area, which forms the peripheral visible area.
[0027] Furthermore, the surface shape of the microlens in the defocus zone is selected from at least one of spherical, aspherical, toroidal, cylindrical, and freeform surfaces;
[0028] The microlens has a diameter of 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.
[0029] This utility model also provides eyeglasses, including a frame comprising lenses as described in any of the preceding claims.
[0030] Compared with the prior art, this utility model, by adopting the above technical solution, has the following advantages and positive effects: The defocus lens provided by this utility model constructs multiple defocus areas by setting multiple defocus rings, which effectively adjusts and improves myopia while improving astigmatism. At the same time, the microstructure array of the defocus area adopts a radial array arrangement (each defocus ring includes multiple defocus bands radiating outward from the optical center of the lens substrate, with intervals between the defocus bands), 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 wearing comfort. Moreover, the defocus bands in adjacent defocus rings are staggered in the circumferential direction, and the intervals between the defocus bands in adjacent defocus rings are also staggered in the circumferential direction, increasing the anisotropy of the defocus area, reducing visual receptor adaptation, and thus delaying tolerance.
[0031] Furthermore, for each defocus ring, the defocus degree of the microlenses on adjacent defocus rings is set differently to form high defocus rings and low defocus rings. The high defocus rings and low defocus rings are alternately set on the defocus rings. In this way, by further subdividing the defocus units in the defocus rings, the problem of astigmatism caused by a single defocus amount after the patient wears the device is further improved. Attached Figure Description
[0032] Figure 1 Schematic diagram of the spectacle lens structure with defocus function provided in the embodiment of this utility model Figure 1 .
[0033] Figure 2 for Figure 1 A detailed structural diagram of the defocus zone in the image.
[0034] Figure 3 Schematic diagram of the spectacle lens structure with defocus function provided in the embodiment of this utility model Figure 2 .
[0035] Figure 4 for Figure 3 A detailed structural diagram of the defocus zone in the image.
[0036] Figure 5 This is a schematic diagram of the structure between the alternating high defocus band and low defocus band provided in an embodiment of the present invention.
[0037] Figure 6 for Figure 5 A detailed structural diagram of the defocus zone in the image.
[0038] Figure 7 This is a schematic diagram of the structure of a defocus ring with different defocus degrees provided for an embodiment of the present invention.
[0039] Figure 8 for Figure 7 A detailed structural diagram of the defocus zone in the image.
[0040] Figure 9 A schematic diagram of the eyeglasses structure provided for an embodiment of this utility model.
[0041] Explanation of reference numerals in the attached figures:
[0042] Lenses: 10; Frames: 20;
[0043] central optical zone 110;
[0044] 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;
[0045] Edge area 130;
[0046] Optical center P. Detailed Implementation
[0047] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed account of the spectacle lens and spectacle with defocusing function disclosed in this utility model. 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.
[0048] 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.
[0049] 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.
[0050] 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.
[0051] Explanation of technical terms:
[0052] 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
[0053] See Figure 1 As shown, a spectacle lens 10 with defocus function provided by this utility model includes a lens substrate with a base surface, and at least a central optical zone 110 and a defocus zone 120 are provided on the lens substrate.
[0054] 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.
[0055] 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.
[0056] When the central optical area 110 is circular, the radius R1 of the central optical area 110 can be 3-8 mm, preferably 3.5-5 mm. When the central optical area 110 adopts other shapes mentioned above—such as a regular hexagon or a regular octagon—the radius R1 of the circumcircle of the central optical area 110 can be 3-8 mm, preferably 3.5-5 mm.
[0057] Preferably, in this embodiment of the invention, the shape of the central optical area 110 is circular, elliptical, or a regular polygon.
[0058] 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.
[0059] 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. The microstructure of the defocus zone 120 can specifically employ microlenses, with each defocus zone featuring a microlens array composed of multiple microlenses. The refractive power (i.e., focal power) of the microlenses in the microlens array differs from the refractive power of the lens substrate. Taking myopia control glasses as an example, the multiple microlenses in the defocus zone can project 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 +4.50D of the refractive power of the lens substrate.
[0060] The surface shape of the microlens is selected from at least one of spherical, aspherical, toroidal, cylindrical, and freeform surfaces.
[0061] 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.
[0062] Specifically, the defocus area 120 includes at least two concentric defocus rings, which extend from the outer periphery of the central optical area 110 towards the edge of the lens substrate. 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 be omitted from the lens edge, in which case an edge area 130 is left between the defocus area 120 and the lens edge—that is, an edge area 130 is provided around the defocus area 120. The edge area 130 is an optical area based on the lens substrate, forming a peripheral visible area, which can assist in correcting vision.
[0063] As an example of a typical approach, Figure 1 An example is given where an edge region 130 is left between the defocus region 120 and the edge of the lens. In this case, the defocus ring extends from the minimum radius of the defocus region 120 to the maximum radius of the defocus region 120. The defocus region 120 can have two defocus rings, including 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 region and is arranged in a gradually changing pattern around the central optical region 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.
[0064] 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 2 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.
[0065] 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.
[0066] 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).
[0067] For details, see Figure 2 As shown, 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.
[0068] 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.
[0069] In one embodiment of this invention, the spacing between the defocusing zones of adjacent defocusing rings is partially staggered in the circumferential direction. In this case, the spacing between adjacent defocusing rings is connected in the radial direction. See [link to relevant documentation]. Figure 1 and 2 As shown, the first spacer 1210 and the second spacer 1220 are connected in the radial direction of the lens.
[0070] In another embodiment of this example, the spacing between the defocusing zones of adjacent defocusing rings is completely staggered in the circumferential direction. In this case, the spacing between adjacent defocusing rings is not connected in the radial direction. See [link to relevant documentation]. Figure 3 and Figure 4 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.
[0071] 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.
[0072] 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.
[0073] 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.
[0074] 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.
[0075] See Figure 5 and Figure 6 The illustration demonstrates an alternating pattern of high-defocus zones and low-defocus zones in the defocus area, following a high-low-high-low... rule. 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 zones are defined relative to the low-defocus zones, and vice versa. Preferably, the refractive power of the microlens in the high defocus zone is within the range of +2.50D to +4.50D of the refractive power of the lens matrix (i.e., the additional defocus power is +2.50D to +4.50D), and the refractive power of the microlens in the low defocus zone is within the range of +1.00D to +2.50D of the refractive power of the lens matrix (i.e., the additional defocus power is +1.00D to +2.50D). The difference between the refractive power of the high defocus zone and the low defocus zone is preferably between 0.50D and 2.00D (i.e., the difference in defocus power is between 0.50D and 2.00D).
[0076] 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.
[0077] 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.
[0078] 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 0.50mm to 2.00mm, the value of the first defocus additional value ranges from +1.50D to +4.50D, and the value of the second defocus additional value ranges from +1.00D to +3.00D.
[0079] The microlenses in the high and low defocus zones of the second defocus ring have a third defocus additional degree and a fourth defocus additional degree, respectively. The diameter of the microlenses ranges from 0.50mm to 2.00mm. The value of the third defocus additional degree ranges from +2.00D to +5.00D, and the value of the fourth defocus additional degree ranges from +1.45D to +3.50D.
[0080] 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).
[0081] The defocusing power of the microlenses in the high and low defocus zones of the first defocus ring is preferably +3.08D and +1.98D, respectively, and the defocusing power of the microlenses in the high and low defocus zones of the second defocus ring is preferably +3.58D and +2.48D, respectively.
[0082] The first defocusing ring 121 includes 9 concentric rings, and 22 microlenses are arranged on each defocusing ring 1211. The number of microlenses on the 1st to 9th concentric rings of the defocusing ring 1211 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.
[0083] The second defocusing ring 122 includes 10 concentric rings, and 50 microlenses are arranged on each defocusing ring 1221. The number of microlenses on the first to tenth concentric rings of the defocusing ring 1221 is 5, 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.
[0084] It should be understood by those skilled in the art that the microstructured spectacle lens provided in this embodiment can be ground by CNC lathe, or cast or injection molded, and there are no limitations on this.
[0085] Furthermore, as needed, the defocus zone of the lens can be designed with asymmetrical defocus degrees for the nasal and temporal sides, with the defocus degree of the microlens area of the nasal defocus zone being greater than that of the microlens area of the temporal defocus zone (the hyperopic defocus of the periretinal retina in myopic eyes exhibits an asymmetrical phenomenon on the nasal and temporal sides, with the temporal side showing a greater amount of hyperopic defocus than the nasal side), to ensure that the human eye can obtain similar defocus effects when looking at near and far objects.
[0086] Another embodiment of this utility model also provides eyeglasses. See [link to relevant documentation]. Figure 9 As shown, the eyeglasses include a frame 20 and a lens 10. The lens 10 includes a lens substrate with a central optical zone and a defocus zone. The central optical zone is located in the central area of the lens substrate and is the central visible area. The defocus zone is located on the periphery of the central optical zone and contains a microlens array to suppress the development of refractive errors in the eye.
[0087] The defocus area includes at least two defocus rings arranged concentrically, and each defocus ring includes multiple defocus zones radiating outward from the optical center of the lens substrate, with the defocus zones spaced apart from each other.
[0088] In this design, the defocus zones in adjacent defocus rings are staggered circumferentially, and the intervals between the defocus zones in adjacent defocus rings are also staggered circumferentially.
[0089] The frame 20 may specifically include a frame assembly, temple assembly, and nose pad assembly. The geometric parameters of the frame may include frame size information, temple size information, and nose pad size information. The spectacle lens 10 is mounted in the frame. The geometric parameters of the lens may include lens size, lens radius of curvature, light transmittance, lens thickness, and the size design of the central optical zone and defocus zone.
[0090] Other technical features are described in the preceding embodiments and will not be repeated here.
[0091] 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,"
[0092] 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 spectacle lens with defocus function, comprising a lens substrate, wherein a central optical zone and a defocus zone are disposed on the lens substrate, the central optical zone being disposed based on the optical center of the lens substrate and constituting the central visible area of the lens, and the defocus zone being located on the outer periphery of the central optical zone; the defocus zone comprising at least two concentrically arranged defocus rings, each defocus ring comprising a plurality of defocus bands radiating outward from the optical center of the lens substrate, the defocus bands being spaced apart, characterized in that... The defocus bands in adjacent defocus rings are staggered circumferentially, and the intervals between the defocus bands in adjacent defocus rings are also staggered circumferentially.
2. The spectacle lens according to claim 1, characterized in that: The spacing between the defocus zones of adjacent defocus rings is partially staggered in the circumferential direction, so that the spacing between adjacent defocus rings is connected in the radial direction.
3. The spectacle lens according to claim 1, characterized in that: The spacing between the defocus zones of adjacent defocus rings is completely staggered in the circumferential direction, so that the spacing between adjacent defocus rings is not connected in the radial direction.
4. The spectacle lens according to any one of claims 1-3, 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.
5. The spectacle lens according to claim 4, 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.
6. The spectacle lens according to claim 5, 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 area, 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 0.50mm to 2.00mm, the value of the first defocus additional value ranges from +1.50D to +4.50D, and the value of the second defocus additional value ranges from +1.00D to +3.00D. The microlenses in the high and low defocus zones of the second defocus ring have a third defocus additional degree and a fourth defocus additional degree, respectively. The diameter of the microlenses ranges from 0.50mm to 2.00mm. The value of the third defocus additional degree ranges from +2.00D to +5.00D, and the value of the fourth defocus additional degree ranges from +1.45D to +3.50D.
7. The spectacle lens according to claim 6, characterized in that: The first and second defocus rings have 14 defocus zones, which together consist of 19 concentric rings. The defocus addition power of the microlenses in the high and low defocus zones of the first defocus ring is +3.08D and +1.98D, respectively. The defocus addition power of the microlenses in the high and low defocus zones of the second defocus ring is +3.58D and +2.48D, respectively. The first defocusing ring includes nine concentric rings, with 22 microlenses arranged on each defocusing ring. The number of microlenses on the first to ninth concentric rings of the defocusing ring are 1, 2, 2, 2, 3, 3, 3, 3, and 3, respectively, and the corresponding lens diameters are 1.43 mm, 0.80 mm, 0.96 mm, 1.17 mm, 0.8 mm, 0.95 mm, 1.07 mm, 1.22 mm, and 1.37 mm, 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.
8. The spectacle lens according to any one of claims 1-3 and 5-7, characterized in that: 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; the central optical zone can be circular, elliptical, regular polygonal, quasi-elliptical, or irregular in shape. The radius of the central optical zone or the radius of the circumscribed circle is 3-8 mm; The defocused area is located within a radius of 3-35mm from the optical center; The outer periphery of the defocused area is the edge area, which forms the peripheral visible area.
9. The spectacle lens according to any one of claims 1-3 and 5-7, characterized in that: The surface shape of the microlens in the defocus zone is selected from at least one of spherical, aspherical, toroidal, cylindrical, and freeform surfaces; The microlens has a diameter of 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.
10. A pair of eyeglasses, comprising a frame, characterized in that: The lens includes any one of claims 1-9.