CN217932310U - Out-of-focus lens - Google Patents

Abstract

The embodiment of the utility model provides a defocus lens. The defocus lens includes two layers of resin monomers and a group of microlenses provided between the two layers of resin monomers to provide a defocus effect. The defocus lenses are sequentially arranged from the inside to the outside. It is divided into a central prescription area and a defocused area, and the microlens is set in the defocused area. The out-of-focus lens in the embodiment of the utility model forms the out-of-focus area by setting micro-lenses between the resin monomers on both sides, so that the out-of-focus area has more light than the central prescription area, and forms a out-of-focus surface in front of the user's retina , has the effect of preventing and controlling myopia; in the subsequent coating process of the out-of-focus lens, the micro-lens in the out-of-focus area will not affect the uniformity of the film layer, so that the transmittance is exactly the same, and will not affect the effect of lens addition accuracy.

Description

a defocusing lens

technical field

The utility model relates to the field of lens technology, in particular to a defocus lens.

Background technique

It is understood that the myopia rate of teenagers in my country ranks first in the world, among which the myopia rate of junior high school students and college students has exceeded 70%, and the prevention and control of myopia is urgent. The existing simple and effective method is to wear vision-correcting glasses, i.e. myopia glasses, which diverge and focus light onto the retina. However, for teenagers, their eyeballs are in the developing stage. After wearing myopia glasses, the optical focus of the peripheral part of the lens falls behind the retina, causing the eye axis to stretch, which in turn leads to more serious vision loss.

At present, the myopia lenses such as ordinary spherical surfaces and aspheric surfaces in the prior art do not have the function of preventing the progression of myopia.

Utility model content

In view of this, the embodiment of the present application expects to provide a defocusing lens capable of preventing the progression of myopia.

In order to achieve the above-mentioned purpose, the technical scheme of the embodiment of the present application is realized in this way:

The utility model provides a defocus lens. The defocus lens comprises two layers of resin monomers and a group of microlenses provided between the two layers of resin monomers to provide a defocus effect. The defocus lens is arranged from the inside to the outside. It is sequentially divided into a central prescription area and an out-of-focus area, and the microlens is arranged in the out-of-focus area.

In some embodiments, the microlens is disposed on the joint surface of the two layers of the resin monomer.

In some embodiments, the out-of-focus area is a discontinuous honeycomb bionic out-of-focus refractive area.

In some embodiments, the central prescription area is in the shape of a shell, and a set of shell-shaped curves uniformly arranged around the central prescription area is arranged in the defocused area, and the shell-shaped curves are sequentially distributed from the inside to the outside to the edge of the defocused lens.

In some embodiments, each of the shell-shaped curves is provided with a group of uniformly arranged microlenses, the distance between adjacent microlenses is 1.5 mm to 2.0 mm, and the out-of-focus area is composed of several groups of equidistant The microlenses are arranged on the scalloped curve and uniformly diffused from the inside to the outside.

In some embodiments, the shell-shaped curve is composed of three arcs, the first arc is a convex arc that protrudes upward, the second arc is a convex arc that protrudes to the left, and the third arc is a convex arc that protrudes to the left. The arc is a convex arc that protrudes to the right; the radius of the first segment of the arc of the innermost shell-shaped curve is 20 mm to 21 mm, and the radius of the second segment of the innermost shell-shaped curve The radii of the arc and the third arc are 18 mm to 19 mm; the inner space of the shell-shaped curve is left-right symmetrical according to the optical center of the defocused lens, and the inner space of the innermost shell-shaped curve is The maximum height is 14mm-14.5mm, and the maximum width is 23.5mm-24mm.

In some embodiments, the central prescription area is the innermost space of the shell-shaped curve, and the out-of-focus area is other areas on the defocused lens except the central prescription area.

In some embodiments, the out-of-focus area includes a densely designed area in a frame and an outer divergent area, and the densely designed area in a frame and the outer divergent area form a discontinuous honeycomb bionic out-of-focus refractive area.

In some embodiments, the out-of-focus area is provided with two groups of arcs distributed in a symmetrical circular arc array, the arcs are determined by three points, the first point is located between the central prescription area and the out-of-focus lens At the intersection of the vertical axis, the second point is located at the intersection of the edge of the defocus lens and the horizontal axis of the defocus lens, the third point is the center point of the arc, and the center point of the arc The distance from the vertical axis of the defocusing lens is 20 mm, and the microlens is arranged on the arc.

In some embodiments, the number of the arcs is 40, and each of the arcs is provided with a group of microlenses, and the microlenses are arranged at the intersection of the arc and the arc array symmetrical to it place.

In some embodiments, the central prescription area is circular, with a diameter of 10 mm; the densely designed area in the frame is a circular area on the defocused lens that does not include the central prescription area, and its diameter is 20 mm; The outer diverging area is other areas on the defocus lens that do not include the central prescription area and the densely designed area in the frame, and its diameter is the design diameter of the defocus lens.

In some embodiments, the densely designed area in the frame is composed of three circles of microlenses arranged equidistantly, and the three circles of microlenses form three concentric rings from the inside to the outside, and 20 rings are arranged on the first ring. said microlenses, the second ring is provided with 25 said microlenses, and the third ring is provided with 30 said microlenses; the inner diameter of said first ring is 10mm, same as said arc. , the center distance between the microlenses on the second ring and the microlenses on the first ring is 1.75 mm; on the same arc, on the third ring The center distance between the microlens and the microlens on the second ring is 1.80mm.

In some embodiments, the outer diverging area is the area between the fifth intersection point outward from the center of the arc to the outermost intersection point on the arc, and several circles of equidistantly arranged microlenses are arranged in the outer diverging area , the number of microlenses in each circle is 40, and the microlenses in each circle form a ring.

In some embodiments, the out-of-focus area is a non-continuous gradual de-focus refractive area.

In some embodiments, the diopter of the central prescription area is the same as the prescription diopter required for vision correction, the central prescription area is in the shape of a regular hexagon, and the diameter of its circumscribed circle is 10 mm to 20 mm.

In some embodiments, the gradual defocus refraction area is other areas on the defocus lens except the central prescription area, and the gradual defocus refraction area is in the shape of a ring with a diameter of the defocus The design diameter of the focal lens.

In some embodiments, the progressive defocus refraction area is provided with a set of concentric rings uniformly arranged around the central prescription area, and the set of rings are sequentially distributed to the edge of the defocus lens from the inside to the outside, A group of evenly distributed micro-lenses are arranged on each of the rings, and the diopters of the micro-lenses on different rings show a decreasing trend from inside to outside.

In some embodiments, the diopter reduction range of the microlenses on two adjacent rings is 0.05D˜0.15D.

In some embodiments, the cross-section of the microlens is circular with a diameter of 1.2 mm.

In some embodiments, the cross-section of the microlens is a regular hexagon, and the diameter of its circumscribed circle is 1.2 mm.

In some embodiments, the resin monomers in the two layers have different refractive indices, and the protrusions of the microlenses face the resin monomer with the lower refractive index.

In some embodiments, the resin monomer in the outer layer of the two layers of resin monomers is a lens with a uniform thickness, the thickness of which is 0.5 mm to 1.2 mm, and the resin monomer in the inner layer is a lens with an uneven thickness. Its central thickness is 0.5 mm to 1.2 mm.

In some embodiments, the resin monomers of the two layers are spherical mirrors; or, the resin monomers of the outer layer in the two layers of the resin monomers are plano lenses, and the curvature thereof is the same as the convex surface of the resin monomers of the inner layer. Same curvature.

The out-of-focus lens in the embodiment of the utility model forms the out-of-focus area by setting micro-lenses between the resin monomers on both sides, so that the out-of-focus area has more light than the central prescription area, and forms a out-of-focus surface in front of the user's retina , has the effect of preventing and controlling myopia; in the subsequent coating process of the out-of-focus lens, the micro-lens in the out-of-focus area will not affect the uniformity of the film layer, so that the transmittance is exactly the same, and will not affect the lens adding light accuracy.

Description of drawings

Fig. 1 is the schematic diagram of defocus lens in the first embodiment of the utility model;

Fig. 2 is the cut-away schematic diagram of A-A position in Fig. 1;

3 is a schematic diagram of a defocused lens in a second embodiment of the present invention;

Fig. 4 is the enlarged schematic view of position B in Fig. 3;

Fig. 5 is a schematic diagram of the position of some arcs in the embodiment of Fig. 3;

Fig. 6 is a schematic diagram of the position of the microlens in the first ring, the second ring, the third ring and the fourth ring in the embodiment of Fig. 3, wherein, except the first point, the second point and the third point The solid point of represents the position of the microlens;

Fig. 7 is a schematic diagram of the defocused lens in the third embodiment of the utility model;

Fig. 8 is a schematic cut-away view of position C-C in Fig. 7;

FIG. 9 is an enlarged schematic diagram of position D in FIG. 7 .

Explanation of reference signs

Resin monomer 10; microlens 20; central prescription area 30; out-of-focus area 40; first point 40a; second point 40b; third point 40c; shell-shaped curve 41; first section of arc 411; second section of circle Arc 412; third arc 413; dense design area 42 in the frame; first ring 421; second ring 422; third ring 423; fourth ring 424; outer divergent area 43; arc 44;

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the application and the technical features in the embodiments can be combined with each other. Undue Limitation of This Application.

In the description of this application, the orientation or positional relationship of "top", "bottom", "left", and "right" is based on the orientation or positional relationship shown in Figure 1, and the orientation or positional relationship of "outer layer" and "inner layer" The positional relationship is based on the orientation or positional relationship shown in Figure 2. It should be understood that these orientation terms are only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operate in a particular orientation and therefore are not to be construed as limiting the application.

The embodiment of the utility model provides a defocusing lens, referring to Fig. 2 and Fig. 8, the defocusing lens comprises two layers of resin monomers 10 and a group of microlenses provided between the two layers of resin monomers 10 to provide a defocusing effect 20 , the defocus lens is divided into a central prescription area 30 and a defocus area 40 from inside to outside, and the microlens 20 is arranged in the defocus area 40 .

The diopter of the central prescription area 30 is the diopter of the prescription used by the lens to correct vision, and the defocus function is realized by the microlens 20 designed between the resin monomers 10 on both sides.

The microlens 20 is placed between the resin monomers 10 on both sides, so the front and rear surfaces of the defocus lens are all smooth spherical or aspherical designs, and there is no defocus area 40 caused by tiny protrusions, providing A more efficient and perfect follow-up processing space.

The out-of-focus lens in the embodiment of the utility model forms the out-of-focus area 40 by arranging microlenses 20 between the resin monomers 10 on both sides, so that the out-of-focus area 40 has more light than the central prescription area 30, and the user's retina The out-of-focus surface is formed before, which has the effect of preventing and controlling myopia; in the subsequent coating process of the out-of-focus lens, the microlens 20 in the out-of-focus area 40 will not affect the uniformity of the film layer, so that the transmittance is exactly the same. Does not affect the accuracy of lens addition.

In some embodiments, referring to FIG. 2 and FIG. 8 , the microlens 20 is disposed on the bonding surface of the two layers of resin monomers 10 . In order to fabricate the microlens 20 on the surface of any resin monomer 10 facing the other resin monomer 10, it is convenient for mold processing.

In some embodiments, the refractive indices of the two resin monomers 10 are different, and the protrusions of the microlenses 20 face the resin monomer 10 with the lower refractive index.

The radius of curvature R of the microlens 20 is related to the refractive index of the two-layer resin monomer 10, the design diopter, and the design surface curvature of the lens, namely:

R=(n1-n2)/(D0+D)

Among them, n1 is the refractive index of the resin monomer 10 in the outer layer, n2 is the refractive index of the resin monomer 10 near the eye side, D0 is the design surface curvature of the defocus lens, and D is the design diopter of the microlens 20. When n1<n2, the microlens 20 is arranged on the bonding surface of the inner layer resin monomer 10, and its arc surface protrudes toward the outer layer resin monomer 10; when n1>n2, the microlens 20 is arranged on the outer layer resin monomer The inner surface of 10, its curved surface protrudes towards the eye side resin monomer 10.

In some embodiments, referring to Fig. 2 and Fig. 8, the resin monomer 10 of the outer layer in the two-layer resin monomer 10 is a lens with uniform thickness, and its thickness is 0.5mm (millimeter, millimeter) ~ 1.2mm, and the resin monomer 10 of the inner layer The body 10 is a lens with uneven thickness, and its central thickness is 0.5mm-1.2mm.

In some embodiments, both layers of resin monomers 10 are spherical mirrors.

In some embodiments, the resin monomer 10 of the outer layer in the two-layer resin monomer 10 is a plano lens, and its curvature is the same as the convex curvature of the resin monomer 10 of the inner layer.

In some embodiments, referring to FIG. 1 and FIG. 3 , the out-of-focus area 40 is a discontinuous honeycomb bionic out-of-focus refractive area. Several microlenses 20 are arranged in the out-of-focus area 40 , and each microlens 20 is independent from each other to form a non-continuous arrangement. Moreover, the discontinuous honeycomb bionic defocus refraction area has +2.00D (Dioptre, diopter) to +4.00D addition than the prescription area.

In some embodiments where the out-of-focus area 40 is a non-continuous honeycomb bionic out-of-focus refraction area, the following implementation modes 1 and 2 are provided.

In the third embodiment, the defocus area 40 is a discontinuous gradual defocus refraction area.

Implementation Mode 1

This embodiment mainly solves the problem of user's eye comfort. details as follows:

Referring to Fig. 1, the central prescription area 30 is in the shape of a shell. According to the eye habits of ordinary people, the left and right movement range of the eyeball is large when looking up, and the field of vision shrinks toward the center when looking up or looking down. Therefore, setting the central prescription area 30 in a shell shape can make the defocus lens adapt to the eye habits of ordinary people and improve user comfort. A group of shell-shaped curves 41 are arranged evenly around the central prescription area 30 in the defocus area 40, and the shell-shaped curves 41 are sequentially distributed to the edge of the defocus lens from the inside to the outside. The microlenses 20 are arranged on the shell-shaped curve 41 so that the arrangement of the microlenses 20 is adapted to the shape of the central prescription area 30 and the utilization rate of the area of the out-of-focus area 40 is improved.

In some embodiments, each scalloped curve 41 is provided with a group of evenly arranged microlenses 20 , and the distance between adjacent microlenses 20 is 1.5mm˜2.0mm. The out-of-focus area 40 is composed of several groups of microlenses 20 arranged equidistantly on the scalloped curve 41 and uniformly diffused from the inside to the outside.

In some embodiments, referring to FIG. 1 , the shell-shaped curve 41 is composed of three arcs, the first arc 411 is a convex arc that protrudes upward, and the second arc 412 is a convex arc that protrudes to the left. , the third section of arc 413 is a convex arc protruding to the right; the radius of the first section of arc 411 of the innermost shell-shaped curve 41 is 20 mm to 21 mm, and the radius of the second section of the innermost shell-shaped curve 41 The radius of the section arc 412 and the third section arc 413 is 18 mm to 19 mm; the inner space of the shell-shaped curve 41 is left-right symmetrical according to the optical center of the defocus lens, and the maximum height of the space in the innermost shell-shaped curve 41 is 14mm～14.5mm, the maximum width is 23.5mm～24mm. In order to make the central prescription area 30 adapt to the usage habits of ordinary people and improve user comfort.

In some embodiments, referring to FIG. 1 , the central prescription area 30 is the inner space of the innermost shell-shaped curve 41 , and the out-of-focus area 40 is other areas on the defocused lens except the central prescription area 30 . Improve the utilization rate of the out-of-focus lens and reduce the out-of-focus degree.

In some embodiments, referring to FIG. 4 , the cross-section of the microlens 20 is a regular hexagon, and the diameter of its circumscribed circle is 1.2 mm.

The central prescription area 30 of this embodiment has the diopter based on the prescription for correcting ametropia. The central prescription area 30 adopts a shell-shaped design. By using the shell-shaped central prescription area 30, the user is provided with an accurate prescription to ensure a clear vision. , the shell shape is closer to the shape of the eyes, which improves the wearing comfort; the out-of-focus area 40 is also designed with a shell-shaped curve 41, and the microlenses 20 are arranged on the shell-shaped curve 41 in sequence, and the microlenses 20 are convex lenses. Adding light reduces the defocus degree and alleviates the stimulating factors of myopia deepening, so that the defocus area 40 provides the wearer with defocus myopia prevention and control effects.

Implementation mode two

This embodiment is mainly for improving the wearing comfort of the out-of-focus area 40 . details as follows:

Referring to FIG. 3 , the out-of-focus area 40 includes a densely designed area 42 inside the frame and an outer divergent area 43 , and the densely designed area 42 inside the frame and the outer divergent area 43 constitute a discontinuous honeycomb bionic out-of-focus refractive area. The microlens 20 is disposed inside the densely designed area 42 inside the frame and the outer diverging area 43 . In this way, the densely designed area 42 in the frame provides the wearer with a defocused myopia prevention and control effect, while the distance between the microlenses 20 in the outer diverging area 43 gradually increases to optimize the defocusing effect of large-angle viewing angles.

In some embodiments, referring to FIG. 5 and FIG. 6 , the out-of-focus area 40 is provided with two groups of arcs 44 distributed in a symmetrical arc array, the arcs 44 are determined by three points, and the first point 40a is located between the central prescription area 30 and At the intersection of the vertical axis of the defocus lens, the second point 40b is located at the intersection of the edge of the defocus lens and the horizontal axis of the defocus lens, the third point 40c is the center point of the arc 44, and the center point of the arc 44 The distance from the vertical axis of the defocus lens is 20 mm, and the microlens 20 is arranged on the arc 44 . Part of the microlenses 20 on the same arc 44 is located in the densely designed area 42 inside the frame, and the other part is located in the outer diverging area 43 .

In some embodiments, the number of arcs 44 is 40, and each arc 44 is provided with a group of microlenses 20, and the microlenses 20 are arranged at the intersection of the arc 44 and its symmetrical arc array.

In some embodiments, the central prescription area 30 is circular with a diameter of 10 mm; the densely designed area 42 in the frame is a circular area not including the central prescription area 30 on the defocused lens, and its diameter is 20 mm; the outer divergent area 43 is The diameter of other areas on the defocus lens excluding the central prescription area 30 and the densely designed area 42 in the frame is the design diameter of the defocus lens.

In some embodiments, referring to FIG. 6, the densely designed area 42 in the frame is composed of three circles of equidistantly arranged microlenses 20, and the three circles of microlenses 20 form three concentric rings from the inside to the outside, and the first ring 421 is provided with There are 20 microlenses 20, the second ring 422 is provided with 25 microlenses 20, the third ring 423 is provided with 30 microlenses 20; the inner diameter of the first ring 421 is 10mm, and the same arc 44 , the center distance between the microlens 20 on the second ring 422 and the microlens 20 on the first ring 421 is 1.75 mm, that is, the distance of L3 in Fig. 6; on the same arc 44, the third ring The center-to-center distance between the microlens 20 on 423 and the microlens 20 on the second ring 422 is 1.80 mm, that is, the distance L2 in FIG. 6 .

Referring to Fig. 6, the fourth circular ring 424 passes through the fifth intersection point outward from the center of the circle, on the same arc 44, the center between the microlens 20 on the fourth circular ring 424 and the microlens 20 on the third circular ring 423 The distance is 1.80 mm, that is, the distance of L1 in FIG. 5 .

In some embodiments, the outer diverging area 43 is the area between the fifth intersection point outward from the center of the arc to the outermost intersection point on the arc 44. Several circles of equidistant microlenses 20 are arranged in the outer diverging area 43, and each circle of microlenses The number of lenses 20 is 40, and each circle of microlenses 20 forms a ring. The fifth intersection from the center of the arc 44 to the outside is the position of the microlens 20 on the fourth ring 424 from the inside to the outside.

In some embodiments, referring to FIG. 4 , the cross-section of the microlens 20 is a regular hexagon, and the diameter of its circumscribed circle is 1.2 mm.

Implementation Mode Three

In this embodiment, the out-of-focus area 40 is a non-continuous gradual de-focus refraction area, so as to improve the visual comfort of the out-of-focus area 40 . details as follows:

Referring to Fig. 7, the diopter of the central prescription area 30 is the same as the prescription diopter required for vision correction. The central prescription area 30 is in the shape of a regular hexagon, and the diameter of its circumscribed circle is 10mm-20mm.

The gradient defocus refraction area refers to other areas on the defocus lens except the central prescription area 30 , and the gradient defocus refraction area is in the shape of a ring, and its diameter is the design diameter of the defocus lens.

In some embodiments, a group of concentric rings uniformly arranged around the central prescription area 30 is provided in the progressive defocus refraction area, and the group of rings are distributed to the edge of the defocus lens sequentially from the inside to the outside, and each ring is provided with a A group of uniformly distributed microlenses 20. The distances between adjacent microlenses 20 on the same ring are equal. The diopters of the microlenses 20 on different rings show a decreasing trend from inside to outside.

In some embodiments, the diopter reduction range of the microlenses 20 on two adjacent rings is 0.05D˜0.15D. Until the diopter of the microlens 203 on the outermost ring is 0.

In some embodiments, referring to FIG. 9 , the microlens 20 has a circular cross section with a diameter of 1.2 mm.

The various embodiments/implementations provided in this application can be combined with each other if no contradiction arises.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (20)

1. A defocusing lens is characterized by comprising two layers of resin monomers and a group of microlenses, wherein the microlenses are arranged between the two layers of resin monomers and provide a defocusing effect, the defocusing lens is sequentially divided into a central prescription area and a defocusing area from inside to outside, the microlenses are arranged in the defocusing area, and the defocusing area is a discontinuous honeycomb bionic defocusing dioptric area; or the defocusing area is a discontinuous gradual-change defocusing refraction area, the gradual-change defocusing refraction area is the other area except the central prescription area on the defocusing lens, the gradual-change defocusing refraction area is in a circular ring shape, and the diameter of the gradual-change defocusing refraction area is the design diameter of the defocusing lens.

2. The defocused lens of claim 1, wherein said micro-lenses are disposed on the bonding surface of two layers of said resin monomer.

3. The defocused lens of claim 1, wherein the central prescription region is shell-shaped, a set of shell-shaped curves uniformly distributed around the central prescription region is arranged in the defocused region, and the shell-shaped curves are sequentially distributed from inside to outside to the edge of the defocused lens.

4. The defocused lens of claim 3, wherein a set of microlenses are uniformly arranged on each of the shell-shaped curves, the distance between adjacent microlenses is 1.5 mm-2.0 mm, and the defocused area consists of a plurality of sets of microlenses which are equidistantly arranged on the shell-shaped curves and uniformly spread from inside to outside.

5. The defocused lens according to claim 3, wherein the shell-shaped curve is formed by three arcs, wherein the first arc is a convex arc convex upward, the second arc is a convex arc convex leftward, and the third arc is a convex arc convex rightward; the radius of the first section of arc of the shell-shaped curve at the innermost layer is 20-21 mm, and the radius of the second section of arc and the third section of arc of the shell-shaped curve at the innermost layer is 18-19 mm; the inner space of the shell-shaped curve is bilaterally symmetrical according to the optical center of the defocused lens, the maximum height of the inner space of the shell-shaped curve at the innermost layer is 14-14.5 mm, and the maximum width is 23.5-24 mm.

6. The defocused lens of claim 5, wherein the central prescription region is an inner space of an innermost shell-shaped curve, and the defocused region is the region of the defocused lens except the central prescription region.

7. The defocused lens of claim 1, wherein the defocused area comprises an inner frame dense design area and an outer divergent area, and the inner frame dense design area and the outer divergent area form a discontinuous honeycomb bionic defocused dioptric area.

8. The defocused lens of claim 7, wherein said defocused area has two sets of arcs distributed in a symmetrical arc array, said arcs are defined by three points, a first point is located at the intersection of said central prescription area and the vertical axis of said defocused lens, a second point is located at the intersection of the edge of said defocused lens and the horizontal axis of said defocused lens, a third point is the center point of said arc, and the distance between the center point of said arc and the vertical axis of said defocused lens is 20mm, said micro lens is disposed on said arc.

9. The defocused optic of claim 8, wherein the number of said arcs is 40, each of said arcs having a set of said microlenses disposed at the intersection of said arc and the symmetrical array of arcs.

10. The defocused lens of claim 9, wherein said central prescription area is circular and has a diameter of 10mm; the in-frame dense design area is a circular area on the defocused lens, which does not include the central prescription area, and the diameter of the in-frame dense design area is 20mm; the outer divergent area is the other area of the out-of-focus lens excluding the central prescription area and the in-frame dense design area, and the diameter of the outer divergent area is the design diameter of the out-of-focus lens.

11. The defocused lens of claim 8, wherein said dense design area in said frame is composed of three circles of said microlenses arranged equidistantly, said three circles of said microlenses form three concentric circles from inside to outside, the first circle has 20 said microlenses thereon, the second circle has 25 said microlenses thereon, and the third circle has 30 said microlenses thereon; the inner diameter of the first circular ring is 10mm, and on the same arc line, the center distance between the micro lens on the second circular ring and the micro lens on the first circular ring is 1.75mm; on the same arc line, the center distance between the micro lens on the third circular ring and the micro lens on the second circular ring is 1.80mm.

12. The defocused lens of claim 9, wherein the outer diverging area is an area between the 5 th intersection point outward from the center of the arc and the outermost intersection point, a plurality of circles of the microlenses are arranged in the outer diverging area, the number of the microlenses in each circle is 40, and each circle of the microlenses forms a circular ring.

13. A defocused lens according to claim 1, wherein the optical power of said central prescription region is the same as the prescription optical power required to correct vision, said central prescription region has a regular hexagon shape, and the diameter of the 2 circumscribed circle is 10 mm-20 mm.

14. The defocus lens of claim 1, wherein the progressive defocus dioptric area is provided with a set of concentric rings uniformly arranged around the central prescription area, the set of rings are sequentially distributed from inside to outside to the edge of the defocus lens, each ring is provided with a set of uniformly distributed microlenses, and the diopters of the microlenses on different rings are gradually decreased from inside to outside.

15. The defocused optic of claim 14, wherein the diopter decrease of said micro lenses of two adjacent rings ranges from 0.05D to 0.15D.

16. A defocused optic as claimed in claim 15, wherein the cross section of the micro-lenses is circular with a diameter of 1.2mm.

17. The defocused lens of claim 1, wherein: the cross section of the micro lens is a regular hexagon, and the diameter of a circumscribed circle of the micro lens is 1.2mm.

18. The defocused lens of claim 1, wherein: the refractive indexes of the two layers of resin monomers are different, and the protrusions of the micro lenses face the resin monomers with low refractive indexes.

19. The defocused lens of claim 1, wherein: the resin monomer of the outer layer in the two layers of resin monomers is a lens with uniform thickness, the thickness of the lens is 0.5 mm-1.2 mm, the resin monomer of the inner layer is a lens with non-uniform thickness, and the central thickness of the lens is 0.5 mm-1.2 mm.

20. A through-focus lens as claimed in claim 19, wherein: both the two layers of the resin monomers are spherical mirrors; or the resin monomer on the outer layer in the two layers of resin monomers is a plain lens, and the curvature of the plain lens is the same as the convex curvature of the resin monomer on the inner layer.

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