Annular composite microstructure function lens

Abstract

The utility model provides an annular composite microstructure function lens, which solves the problem that the existing out-of-focus lens cannot adapt to different out-of-focus conditions of eyeballs and the like, and comprises a main lens, the main lens is provided with a correction area, a first composite area, a second composite area and a peripheral area which are arranged one by one from inside to outside, microstructures are distributed on the first composite area and the second composite area respectively, ring structures are arranged among the correction area, the first composite area and the second composite area, and the ring structures are sequentially divided into a plurality of concentric areas from inside to outside. The myopia correction device has the advantages of good myopia correction effect, good adaptability and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of defocus lenses, and in particular relates to an annular composite microstructure function lens. Background Art

[0002] Microstructure refers to various non-uniform structural phenomena in the crystal structure that can only be observed with the help of an optical microscope or an electron microscope. The microlens array is an array composed of lenses with a light aperture and relief depth of micrometers. Like traditional lenses, its smallest functional unit can also be a spherical lens, an aspherical lens, a cylindrical lens, a prism, etc., and it can also achieve focusing, imaging, and light beam transformation functions at a micro-optical angle. Microstructure lenses are a new type of eyeglass lens that improves vision by adding tiny structures to the lens to change the propagation path of light. The microlenses in existing microstructure lenses have a single specification and cannot adapt to the different defocus conditions of the eyeball, and are less effective in delaying the progression of myopia.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a defocus lens [202223388010.6], which includes a first lens monomer and a second lens monomer that are bonded to each other, the first lens monomer includes a body and a plurality of closed annular protrusions, the annular protrusions are located on the side surface of the body facing the second lens monomer, the annular protrusions are arranged from the inside to the outside, the inner side of the innermost annular protrusion is surrounded to form a central prescription area, and the outermost annular protrusion and the innermost annular protrusion are surrounded to form a defocus area.

[0004] The above solution solves the problem of eye vision correction to a certain extent, but the solution still has many shortcomings, such as the inability to adapt to different defocus conditions of the eye. Summary of the invention

[0005] The utility model aims to solve the above problems and provide a ring-shaped composite microstructure function lens with reasonable design and good adaptability to defocus changes.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an annular composite microstructure function lens, including a main lens, the main lens having a correction area, a first composite area, a second composite area and a peripheral area arranged one by one from the inside to the outside, microstructures are distributed on the first composite area and the second composite area respectively, a ring structure is arranged between the correction area, the first composite area and the second composite area, and the ring structure is divided into a number of concentric areas from the inside to the outside.

[0007] In the above-mentioned annular composite microstructure function lens, the microstructure includes microlenses symmetrically distributed relative to the center of the correction area and the spacing between adjacent microlenses is equal, and the center of the correction area is offset relative to the center of the main lens.

[0008] In the above-mentioned annular composite microstructure function lens, the refractive power of the microstructure increases step by step from the inside to the outside according to the concentric zone, and the increment of the refractive power of the microstructure in adjacent concentric zones does not exceed 1.2%. The size of the microlens of the microstructure is 0.08-1.50mm.

[0009] In the above-mentioned annular composite microstructure function lens, the correction area is circular and has a radius of 9-14 mm.

[0010] In the above-mentioned annular composite microstructure function lens, the first composite area is in a fan-shaped structure and is an area excluding the correction area. The angular arc of the first composite area is 105-125° and the radius is 32-40 mm.

[0011] In the above-mentioned annular composite microstructure function lens, the second composite area is fan-shaped and is the area excluding the correction area and the first composite area. The angular arc of the second composite area is 85-95° and the radius is 72-85 mm.

[0012] In the above-mentioned annular composite microstructure function lens, the peripheral area is the area of ​​the main lens excluding the correction area, the first composite area and the second composite area.

[0013] In the above-mentioned annular composite microstructure function lens, the refractive power of the first composite zone is smaller than that of the correction zone, and the refractive power of the second composite zone is larger than that of the correction zone.

[0014] In the above-mentioned annular composite microstructure function lens, the diopter difference between the correction zone and the first composite zone and the second composite zone ranges from 1.0 to 2.5D.

[0015] In the above-mentioned annular composite microstructure function lens, the corners of the main lens are chamfered, and a circumferential mounting groove is opened at the edge of the main lens, and the depth of the mounting groove gradually increases from the corner to the middle of each side.

[0016] Compared with the existing technology, the advantages of the utility model are: the composite area and the correction area on the main lens are respectively adapted to the defocus changes of medium and far distances, and the gradually changing microstructure ensures that the light is concentrated on the retina, effectively inhibiting the development of myopia; the area of ​​the composite area is larger than the area of ​​the correction area and has a fan-shaped structure, which is adapted to daily eye habits and improves the comfort of use; the depth of the mounting groove around the main lens changes gradually, which is convenient for the installation and fixation of the main lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0019] Figure 3 It is a partial cross-sectional view of the utility model;

[0020] In the figure, there are a main lens 1 , a correction area 11 , a first composite area 12 , a second composite area 13 , a peripheral area 14 , a concentric area 2 , and a mounting groove 3 . DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Embodiment 1

[0023] like Figure 1-3 As shown, a ring-shaped composite microstructure function lens includes a main lens 1 made of polyurethane, and a finished product is obtained after grinding, coating and other processes. The finished main lens 1 has a correction area 11, a first composite area 12, a second composite area 13 and a peripheral area 14 arranged one by one from the inside to the outside, and the correction area 11 is offset relative to the center of the main lens 1 to ensure that it is opposite to the axis of the eyeball. Microstructures are distributed on the first composite area 12 and the second composite area 13 respectively, which are circumferentially distributed relative to the correction area 11. A ring structure is arranged between the correction area 11, the first composite area 12 and the second composite area 13. The ring structure is divided into a number of concentric areas 2 from the inside to the outside, and the microstructures are divided step by step by the concentric areas 2 to ensure uniform light distribution.

[0024] Specifically, the microstructure includes microlenses symmetrically distributed relative to the center of the correction area 11 and the spacing between adjacent microlenses is equal, wherein the microlenses are integrally formed with the main lens 1 and are distributed in a matrix. The shape of the microlenses is spherical, hexagonal, square, etc., and the present application prefers spherical microlenses, and the center of the correction area 11 is offset relative to the center of the main lens 1 and coincides with the eye axis.

[0025] In depth, the microstructure can be processed and formed by wet etching or hot pressing, the refractive power of the microstructure increases step by step from the inside to the outside according to the concentric zone 2, and the increment of the refractive power of the microstructure of the adjacent concentric zone 2 does not exceed 1.2%, and the size of the microlens of the microstructure is 0.08-1.50mm. Each concentric zone is a ring structure, wherein the second composite zone 13 has an irregular concentric zone 2.

[0026] Furthermore, the diopter of the correction area 11 in the present application is selected as -1.00DS, which is mainly suitable for vision correction of 100 degrees of myopia. The correction area 11 is circular with a radius of 9-14mm. When the user wears the lens and is in a level state, the correction area 11 coincides with the axis of the eyeball, which is suitable for focusing light at medium distances.

[0027] Furthermore, the first composite area 12 is offset downward relative to the correction area 11, and has a fan-shaped structure as a whole and is an area excluding the correction area 11. The first composite area 12 has an angular arc of 105-125° and a radius of 32-40 mm. The main area of ​​the first composite area 12 is located in the lower half of the main lens 1, suitable for focusing close-range light, and its area is larger than the correction area 11 to meet daily use.

[0028] In addition, when used for medium and long distance observation, the second composite area 13 is fan-shaped and is the area excluding the correction area 11 and the first composite area 12, and its main area is located in the upper half of the main lens 1. The second composite area 13 has an angular arc of 85-95° and a radius of 72-85mm. The overall area is larger than the first composite area 12 and the correction area 11, thereby obtaining a larger focusing area to ensure that the light is concentrated on the retina.

[0029] Meanwhile, the peripheral area 14 is the area of ​​the main lens 1 excluding the correction area 11, the first composite area 12 and the second composite area 13, wherein the diopter of the peripheral area 14 is usually consistent with that of the correction area 11, thereby reducing the difficulty of coating processing of the main lens 1. Since the peripheral area 14 is not a commonly used area, it has no microstructure to assist light focusing.

[0030] It can be seen that the refractive power of the first composite area 12 is smaller than that of the correction area 11 , and the refractive power of the second composite area 13 is larger than that of the correction area 11 .

[0031] Obviously, the diopter difference between the correction area 11 and the first composite area 12 and the second composite area 13 ranges from 1.0 to 2.5D.

[0032] Preferably, the corners of the finished main lens 1 are chamfered for easy assembly, and the edge of the main lens 1 is provided with a mounting groove 3 that surrounds the circumference, and the depth of the mounting groove 3 gradually increases from the corner to the middle of each side. The mounting groove 3 is engaged with the frame to be fixed, and the greater depth of the mounting groove 3 at the corner helps to improve the connection stability.

[0033] Embodiment 2

[0034] The structure, principle and specific implementation steps of this embodiment are similar to those of the first embodiment, except that in this embodiment, the microstructure is arranged on an independent lens or film, and its surface microlenses correspond to the first composite area 12 and the second composite area 13 of the main lens 1, and the microlenses are also distributed on the concentric areas 2 specified by the ring structure.

[0035] After the main lens 1 is formed by stacking the microstructure, the microlenses on its surface still meet the optical transfer function, and transparent colloid or bonding lens technology is used to ensure that the lens or film is attached to the main lens 1 without affecting the light transmission.

[0036] In summary, the principle of this embodiment is that the main lens 1 is provided with a first composite area 12 and a second composite area 13 with different refractive powers on the basis of the correction area 11, which is suitable for optical imaging at different distances, near and far. At the same time, the microstructure is distributed along the concentric area 2 to ensure the light focusing effect of each composite area, and effectively adapt to different defocus conditions of the eyeball.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although the terms such as main lens 1, correction area 11, first composite area 12, second composite area 13, peripheral area 14, concentric area 2, and mounting groove 3 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A ring-shaped composite microstructure function lens, comprising a main lens (1), characterized in that: The main lens (1) comprises a correction area (11), a first composite area (12), a second composite area (13) and a peripheral area (14) which are arranged one by one from the inside to the outside, microstructures are respectively distributed on the first composite area (12) and the second composite area (13), a ring structure is arranged between the correction area (11), the first composite area (12) and the second composite area (13), and the ring structure is divided into a plurality of concentric areas (2) in sequence from the inside to the outside.

2. The annular composite microstructure function lens according to claim 1, characterized in that: The microstructure comprises microlenses that are symmetrically distributed relative to the center of the correction area (11) and the spacing between adjacent microlenses is equal. The center of the correction area (11) is offset relative to the center of the main lens (1).

3. The annular composite microstructure function lens according to claim 2, characterized in that: The diopter of the microstructure increases step by step from the inside to the outside of the concentric zone (2), and the increment of the diopter of the microstructure of adjacent concentric zones (2) does not exceed 1.2%. The size of the microlens of the microstructure is 0.08-1.50 mm.

4. The annular composite microstructure function lens according to claim 1, characterized in that: The correction area (11) is circular and has a radius of 9-14 mm.

5. The annular composite microstructure function lens according to claim 4, characterized in that: The first composite area (12) is in a fan-shaped structure and is an area excluding the correction area (11). The first composite area (12) has an angular arc of 105-125° and a radius of 32-40 mm.

6. The annular composite microstructure function lens according to claim 5, characterized in that: The second composite area (13) is in a fan-shaped structure and is a region excluding the correction area (11) and the first composite area (12). The second composite area (13) has an angular arc of 85-95° and a radius of 72-85 mm.

7. The annular composite microstructure function lens according to claim 6, characterized in that: The peripheral area (14) is the area of ​​the main lens (1) excluding the correction area (11), the first composite area (12) and the second composite area (13).

8. The annular composite microstructure function lens according to claim 1, characterized in that: The refractive power of the first composite area (12) is smaller than the refractive power of the correction area (11), and the refractive power of the second composite area (13) is larger than the refractive power of the correction area (11).

9. The annular composite microstructure function lens according to claim 8, characterized in that: The diopter difference between the correction area (11) and the first composite area (12) and the second composite area (13) ranges from 1.0 to 2.5D.

10. The annular composite microstructure function lens according to claim 1, characterized in that: The corners of the main lens (1) are chamfered, and a mounting groove (3) surrounding the circumference is provided at the edge of the main lens (1), and the depth of the mounting groove (3) gradually increases from the corners toward the middle of each side.

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