Partitioned far-myopia alternating function lens and manufacturing method thereof

Abstract

According to the partitioned far-myopia alternating function lens provided by the invention, through the combination and alternating layout design of the far-myopia lens and the myopia lens, a good inhibition effect on far-myopia, strabismus and myopia is achieved. The technical key points are as follows: the lens comprises a lens main body, a concentric ring structure is arranged on the surface of the lens main body, the concentric ring structure comprises a plurality of myopia ring areas and hyperopia ring areas which are concentrically arranged, the myopia ring areas and the hyperopia ring areas are distributed in a crossed and adjoining manner from inside to outside, and the central area of the concentric ring structure is provided with a circular central hyperopia area; the remaining area of the lens body except the concentric ring structure and the central hyperopia area is a transition area. The lens main body adopts a partition structure, and a hyperopia area and a myopia area with different curvature radiuses are concentrically and annularly arranged, so that the central area has good myopia suppression and astigmatism correction effects. And meanwhile, the polarized light structure and each subarea are provided with independent transmissivity, so that a far-sighted area and a near-sighted area form a grating, and a good correction effect on high far-sighted and strabismus is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lens design and manufacturing, and in particular to a partitioned far and near vision alternating function lens and a manufacturing method thereof. Background Art

[0002] Resin lenses are a new type of lens material that is lightweight, durable, and impact-resistant. In recent decades, there have been studies on the use of resin lenses to inhibit the development of myopia in adolescents. Progressive lenses are a special type of lens that can automatically adjust the focal length as the wearer's line of sight changes, allowing the wearer to see objects clearly at different distances. In recent years, studies have shown that progressive lenses can inhibit the development of myopia in adolescents. Specifically, progressive lenses can inhibit the development of myopia in adolescents in the following ways:

[0003] Reduce the eye's focus on close objects: The main cause of myopia in adolescents is long-term close-up use of the eyes, which causes the eyes to focus too much on close objects. Progressive lenses can reduce the eye's focus on close objects by automatically adjusting the focal length, thereby reducing eye fatigue and visual stress.

[0004] Promote the eye's ability to adjust: The development of myopia in adolescents is related to the eye's ability to adjust. Progressive lenses can promote the eye's ability to adjust by automatically adjusting the focal length, thereby slowing down the development of myopia.

[0005] Improve visual comfort: The development of myopia in adolescents is also related to visual comfort. Progressive lenses can improve visual comfort by automatically adjusting the focal length, thereby reducing eye fatigue and visual pressure. It should be noted that progressive lenses are not very effective. Studies have shown that they are more effective in suppressing children with esotropia. Bifocals plus prisms are a special type of eyeglass lens that can adjust the visual focus by changing the refraction angle of light, so that the wearer can see clearly at objects at different distances. In recent years, studies have also shown that bifocals plus prisms can inhibit the development of myopia in adolescents. However, the above two methods are not ideal. Summary of the invention

[0006] In view of the problems described in the background technology, the present invention proposes a partitioned hyperopia and myopia alternating function lens, which has a good inhibitory effect on hyperopia, strabismus and myopia through the combination of hyperopia and myopia lenses and alternating layout design.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A zoned myopia and hyperopia alternating function lens comprises a lens body, wherein a concentric ring structure is arranged on the surface of the lens body, wherein the concentric ring structure comprises a plurality of myopia ring areas and hyperopia ring areas arranged concentrically, wherein the myopia ring areas and the hyperopia ring areas are arranged to be cross-adjacently distributed from the inside to the outside, and the central area of ​​the concentric ring structure has a circular central hyperopia area, and the remaining area of ​​the lens body after excluding the concentric ring structure and the central hyperopia area is a transition area.

[0009] Preferably, the myopia ring zone has a substrate I and a microstructure I. Except for the innermost myopia ring zone, the refractive power of the substrate I of any of the myopia ring zones is increased by 1% relative to the refractive power of the substrate I of the inner adjacent myopia ring zone, the microstructure I is designed as a microlens structure, the refractive power of microstructure I is designed to be -1.0 to -10.0D, and multiple microstructures I are distributed in the myopia ring zone in an array and are centrally symmetrical about the center of the concentric ring structure; the hyperopia ring zone has a substrate II and a microstructure II. Except for the innermost hyperopia ring zone, the refractive power of the substrate II of any of the hyperopia ring zones is increased by 1% relative to the refractive power of the substrate II of the inner adjacent hyperopia ring zone, the microstructure II is designed as a microlens structure, the refractive power of microstructure II is designed to be +4.0 to +10.0D, and multiple microstructures II are distributed in the hyperopia ring zone in an array and are centrally symmetrical about the center of the concentric ring structure.

[0010] Preferably, the total number of the myopia ring zones and the hyperopia ring zones is 3 to 20; the inner diameter of the concentric ring structure is not less than 6 mm, the outer diameter of the concentric ring structure is not more than 80 mm, and at the same time, the difference between the inner diameter and the outer diameter of the concentric ring structure is 2 mm to 10 mm; the diameter of the central hyperopia zone is 5 mm to 10 mm.

[0011] Preferably, the diameter of the microstructure I is 0.1 mm to 2 mm; the diameter of the microstructure II is 0.1 mm to 2 mm.

[0012] Preferably, the refractive index and Abbe number of the lens body meet the following conditions:

[0013] Refractive index is 1.67, Abbe number ≥ 30;

[0014] Or the refractive index is 1.60, the Abbe number is ≥30;

[0015] Or the refractive index is 1.55, the Abbe number is ≥30;

[0016] Or the refractive index is 1.50 and the Abbe number is ≥58.

[0017] Preferably, the lens body is covered with a polarizing film on the surface opposite to the surface where the concentric ring structure is located, and the outer side of the polarizing film is also covered with a hardened film, and the polarizing film at least completely covers the concentric ring structure.

[0018] Preferably, the polarizing film comprises a main film body and a secondary film body which are bonded to each other, the main film body is placed between the lens body and the hard film; the secondary film body is placed between the lens body and the main film body or between the hard film and the main film body, and the lens body, main film body, secondary film body and hard film are all tightly bonded at the contact points.

[0019] Preferably, the auxiliary film body is designed with a polarization zone and a light-transmitting zone, wherein the polarization zone is annular and covers the hyperopia ring zone one-to-one, and the light-transmitting zone is annular and covers the myopia ring zone one-to-one, the transmittance of the polarization zone is 38% to 42%, and the transmittance of the light-transmitting zone is 50%-64%.

[0020] Compared with the prior art, the partitioned far and near vision alternating function lens of the present invention has the following beneficial effects:

[0021] 1. The main body of the lens adopts a partitioned structure, with the farsighted area and nearsighted area of ​​different curvature radii arranged in concentric rings, so that its central area has good myopia suppression and astigmatism correction effects.

[0022] Second, a polarizing structure is also provided on the surface of the lens body. At the same time, the polarizing structure and each partition are set with independent transmittance, so that a grating is formed in the hyperopia area and the myopia area, which has a good correction effect on high hyperopia and strabismus.

[0023] 3. Each partition of the lens body is equipped with a microstructure, and the optical zone formed by the microstructure solves the problem that the myopia control effect becomes worse over time due to wearing a single myopic defocus lens.

[0024] The present invention also discloses a method for manufacturing a partitioned far and near vision alternating function lens, which is used to manufacture the partitioned far and near vision alternating function lens described in any one of the above schemes. The manufacturing method comprises the following steps:

[0025] S1: Determine the size and geometric center of the lens body, locate the mold at four points, and make sure that the geometric center of the lens body is consistent with the optical center. ;

[0026] S2: According to the lens body design data, a processing template is prepared, the lens center is marked on the template, and edge grinding, corner grinding and polishing are performed;

[0027] S3: attaching a polarizing film and a hardening film to the lens body in sequence, and then performing a secondary grinding process on the edge of the transition zone;

[0028] S4: Perform secondary vacuum coating on the lens body. Under vacuum conditions, silicon dioxide and zirconium dioxide are coated according to the designed thickness, which can further improve the light transmittance of the lens and improve the clarity of the lens.

[0029] 10. The method for manufacturing a zoned myopia alternating function lens according to claim 1, wherein step S3 comprises the following steps:

[0030] S31: Determine the center axis point of the lens body and the polarizing film;

[0031] S32: cleaning the surface of the lens body;

[0032] S33: cutting the polarizing film;

[0033] S34: attaching a polarizing film to the inner surface of the lens body;

[0034] S35: Additional dura mater is applied by immersion method. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of an embodiment of a partitioned far and near vision alternating function lens of the present invention.

[0036] Figure 2 1 is a schematic diagram of the structure and partial enlargement of the concentric ring structure in this embodiment.

[0037] Figure 3 It is a schematic cross-sectional view of the coating portion of the lens body in this embodiment.

[0038] Figure 4 Schematic diagram of the structure of the inner surface of the lens body in this embodiment.

[0039] Figure numerals: 1. lens body; 10. concentric ring structure; 2. myopia ring zone; 20. base I; 21. microstructure I; 3. hyperopia ring zone; 30. base II; 31. microstructure II; 4. central hyperopia zone; 5. transition zone; 6. polarizing film; 60. main film body; 61. auxiliary film body; 611. polarization zone; 612. light-transmitting zone; 7. hard film. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0041] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0042] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0043] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0044] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0045] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context unless otherwise noted. Certain terms used to describe the case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art on the description of the case.

[0046] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0047] Embodiment 1:

[0048] like Figures 1 to 4 The partitioned myopia and hyperopia alternating function lens shown includes a lens body 1. The lens body 1 adopts a multifocal microstructure lens. A concentric ring structure 10 is arranged on the surface of the lens body 1. The concentric ring structure 10 includes a plurality of myopia ring areas 2 and hyperopia ring areas 3 arranged concentrically. The myopia ring areas 2 and the hyperopia ring areas 3 are arranged to be cross-adjacently distributed from the inside to the outside. The central area of ​​the concentric ring structure 10 has a circular central hyperopia area 4. The remaining area of ​​the lens body 1 excluding the concentric ring structure 10 and the central hyperopia area 4 is a transition area 5.

[0049] The myopia ring zone 2 has a substrate Ⅰ20 and a microstructure Ⅰ21. Except for the innermost myopia ring zone 2, the diopter of the substrate Ⅰ20 of any myopia ring zone 2 is increased by 1% relative to the diopter of the substrate Ⅰ20 of the inner adjacent myopia ring zone 2. The microstructure Ⅰ21 is designed as a microlens structure. The diopter of the microstructure Ⅰ21 is designed to be -1.0 to -10.0D. A plurality of microstructures Ⅰ21 are distributed in the myopia ring zone 2 in an array and are centrally symmetrical about the center of the concentric ring structure 10. The hyperopia ring zone 3 has a base II 30 and a microstructure II 31. Except for the innermost hyperopia ring zone 3, the diopter of the base II 30 of any hyperopia ring zone 3 is increased by 1% relative to the diopter of the base II 30 of the inner adjacent hyperopia ring zone 3. The microstructure II 31 is designed as a microlens structure. The diopter of the microstructure II 31 is designed to be +4.0 to +10.0D. Multiple microstructures II 31 are distributed in the hyperopia ring zone 3 in an array and are centrally symmetrical about the center of the concentric ring structure 10. Since the curvatures of the myopia ring zone 2 and the hyperopia ring zone 3 are different, different diopters are corrected. At the same time, the concentric ring structure 10 can effectively eliminate the spherical distortion of the transition zone 5.

[0050] The total number of myopia ring zones 2 and hyperopia ring zones 3 is 3 to 20. The inner diameter of the concentric ring structure 10 is not less than 6 mm, and the outer diameter of the concentric ring structure 10 is not greater than 80 mm. At the same time, the difference between the inner diameter and the outer diameter of the concentric ring structure 10 is 2 mm to 10 mm. The diameter of the central hyperopia zone 4 is 5 mm to 10 mm. Function lenses need to take into account the changes in the pupil of the human eye under different brightness environments. Since the pupil diameter of an ordinary person is about 6 mm, the diameter of the central hyperopia zone 4 is set to 5 to 10 mm to ensure its imaging effect under normal brightness.

[0051] The diameter of microstructure I21 is 0.1 mm to 2 mm; the diameter of microstructure II31 is 0.1 mm to 2 mm. The microstructure I21 and microstructure II31 are both array microlenses and are arranged centrally and symmetrically relative to the lens body 1. The diopter of the adjacent near-vision ring area 2 and the adjacent far-vision ring area 3 changes linearly.

[0052] The refractive index and Abbe number of the lens body 1 satisfy the following conditions:

[0053] Refractive index is 1.67, Abbe number ≥ 30;

[0054] Or the refractive index is 1.60, the Abbe number is ≥30;

[0055] Or the refractive index is 1.55, the Abbe number is ≥30;

[0056] Or the refractive index is 1.50 and the Abbe number is ≥58.

[0057] The Abbe number is a parameter that characterizes the dispersion of optical materials. The higher the Abbe number, the smaller the dispersion. Dispersion refers to the different wavelengths of light. Different imaging positions lead to unclear imaging. Therefore, the higher the Abbe number, the clearer the color image. High refractive index lenses can increase the surface curvature, that is, the lenses are flatter, and the result is thinner and lighter. Therefore, the refractive index can affect the thickness of the lens and the imaging quality. Similarly, the Abbe number also affects the imaging quality. Therefore, this solution limits the relative range of refractive index and Abbe number to obtain the best lens imaging effect.

[0058] In order to achieve the correction of high hyperopia and strabismus, the lens body 1 is covered with a polarizing film 6 on the surface opposite to the surface where the concentric ring structure 10 is located, and the outer side of the polarizing film 6 is also covered with a hard film 7, and the polarizing film 6 at least completely covers the concentric ring structure 10. The polarizing film 6 used does not need to be scored on the lens body 1, and only needs to be coated on the lens body 1 to obtain the corresponding grating structure, which is adapted to the microstructure I 21 and the microstructure II 31 to promote the movement of the ciliary muscle, and has a good preventive and corrective effect on hyperopia and strabismus.

[0059] In order to reduce the difficulty of coating processing, the polarizing film 6 includes a main film body 60 and a secondary film body 61 that fit each other, and the relatively independent main film body 60 and secondary film body 61 can be adjusted according to the specifications of the concentric ring structure 10. The main film body 60 is placed between the lens body 1 and the hard film 7. The secondary film body 61 is placed between the lens body 1 and the main film body 60, or the secondary film body 61 is placed between the hard film 7 and the main film body 60. Adjacent secondary film bodies 61 are arranged independently relative to the main film body 60, and the lens body 1, the main film body 60, the secondary film body 61 and the hard film 7 are tightly fitted at the contact points.

[0060] The secondary film body 61 is designed with a polarization zone 611 and a light-transmitting zone 612, wherein the polarization zone 611 is annular and covers the hyperopia ring zone 3 one by one, and the light-transmitting zone 612 is annular and covers the myopia ring zone 2 one by one, and the transmittance of the polarization zone 611 is 38% to 42%, and the transmittance of the light-transmitting zone 612 is 50% to 64%. The polarization zone 611 and the light-transmitting zone 612 use different transmittances to form a grating, and at the same time do not affect the normal imaging of the retina.

[0061] This embodiment provides a method for manufacturing a partitioned near-far vision alternating function lens, comprising the following steps:

[0062] S1: Determine the size of the lens body 1 and the geometric center of the lens body 1, and after positioning the mold at four points, determine that the geometric center of the lens body 1 is consistent with the optical center;

[0063] S2: according to the lens design data, a processing template is prepared, the lens center is marked on the processing template, and the lens body 1 is edged, angled and polished;

[0064] S3: attaching the polarizing film 6 and the hardening film 7 to the lens body 1 in sequence, and then performing a secondary grinding process on the edge of the transition zone 5;

[0065] S4: performing secondary vacuum coating on the lens body 1, coating silicon dioxide and zirconium dioxide according to the designed thickness under vacuum conditions to further improve the light transmission performance of the lens.

[0066] S4: Grooving and drilling holes are performed on the edge of the lens body 1.

[0067] Embodiment 2:

[0068] This embodiment is based on the technical content of Embodiment 1. The technical differences between this embodiment and Embodiment 1 are as follows:

[0069] In the method for manufacturing the partitioned near-far vision alternating function lens, step S3 further comprises the following steps:

[0070] S31: Determine the central axis points of the lens body 1 and the polarizing film 6;

[0071] S32: Cleaning the surface of the lens body 1;

[0072] S33: cutting the polarizing film 6;

[0073] S34: attaching the polarizing film 6 to the inner surface of the lens body 1;

[0074] S35: applying an additional hard coat 7 by immersion method.

[0075] Embodiment 3:

[0076] This embodiment is based on the technical content of Embodiment 2. The technical differences between this embodiment and Embodiment 2 are as follows:

[0077] In step S33, a fitting margin needs to be reserved for the myopia ring zone 2 and the hyperopia ring zone 3 during cutting, and a fitting margin of 1 to 2 mm is usually reserved.

[0078] In step S34, the polarizing film 6 is bonded, wherein adjacent auxiliary film bodies 61 are arranged on both sides of the main film body 60. After a number of spaced auxiliary film bodies 61 are bonded to the lens body 1, the main film body 60 is covered on the auxiliary film bodies 61 and the lens body 1, and then another group of auxiliary film bodies 61 are bonded, and finally the bonding of the hard film 7 is completed.

[0079] Embodiment 4:

[0080] This embodiment is based on the technical content of Embodiment 2. The technical differences between this embodiment and Embodiment 2 are as follows:

[0081] The polarization zone 611 and the light-transmitting zone 612 in the auxiliary film 61 selected in step S33 are connected as a whole, and the transmittance at the junction of adjacent polarization zones 611 and light-transmitting zones 612 presents a linear and smooth transition.

[0082] In step S34 , the auxiliary film 61 is firstly attached to the inner surface of the lens body 1 , and then the main film 60 is covered. The polarization zone 611 and the light transmission zone 612 of the auxiliary film 61 are arranged on the same side of the lens body 1 .

[0083] 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.

[0084] Although the terms lens body 1, polarizing film 6, hard film 7, main film body 60, auxiliary film body 61, polarization zone 611, light transmission zone 612, concentric ring structure 10, near vision zone, far vision zone, transition zone 5, etc. are frequently used 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 present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A zoned myopia alternating function lens, comprising a lens body (1), characterized in that: The surface of the lens body (1) is provided with a concentric ring structure (10), the concentric ring structure (10) comprises a plurality of myopia ring areas (2) and hyperopia ring areas (3) arranged concentrically, the myopia ring areas (2) and hyperopia ring areas (3) are arranged in a cross-adjacent distribution from the inside to the outside, the central area of ​​the concentric ring structure (10) has a circular central hyperopia area (4), and the remaining area of ​​the lens body (1) excluding the concentric ring structure (10) and the central hyperopia area (4) is a transition area (5).

2. The zoned myopia alternating function lens according to claim 1, characterized in that: The myopic ring zone (2) comprises a substrate I (20) and a microstructure I (21). Except for the innermost myopic ring zone (2), the diopter of the substrate I (20) of any of the myopic ring zones (2) is increased by 1% relative to the diopter of the substrate I (20) of the inner adjacent myopic ring zone (2). The microstructure I (21) is designed as a microlens structure. The diopter of the microstructure I (21) is designed to be -1.0 to -10.0D. A plurality of microstructures I (21) are distributed in an array in the myopic ring zone (2) and are centrally symmetrical about the center of the concentric ring structure (10). The hyperopia ring zone (3) comprises a base II (30) and a microstructure II (31). The diopter of the base II (30) of any hyperopia ring zone (3) except the innermost hyperopia ring zone (3) is increased by 1% relative to the diopter of the base II (30) of the inner adjacent hyperopia ring zone (3). The microstructure II (31) is designed as a microlens structure. The diopter of the microstructure II (31) is designed to be +4.0 to +10.0D. A plurality of microstructures II (31) are distributed in an array in the hyperopia ring zone (3) and are centrally symmetrical about the center of the concentric ring structure (10).

3. The zoned myopia alternating function lens according to claim 1, characterized in that: The total number of the myopia ring zone (2) and the hyperopia ring zone (3) is 3 to 20; the inner diameter of the concentric ring structure (10) is not less than 6 mm, and the outer diameter of the concentric ring structure (10) is not more than 80 mm. At the same time, the difference between the inner diameter and the outer diameter of the concentric ring structure (10) is 2 mm to 10 mm; the diameter of the central hyperopia zone (4) is 5 mm to 10 mm.

4. The zoned myopia alternating function lens according to claim 1, characterized in that: The diameter of the microstructure I (21) is 0.1 mm to 2 mm; the diameter of the microstructure II (31) is 0.1 mm to 2 mm.

5. The zoned myopia alternating function lens according to claim 1, characterized in that: The refractive index and Abbe number of the lens body (1) satisfy the following conditions: Refractive index is 1.67, Abbe number ≥ 30; Or the refractive index is 1.60, the Abbe number is ≥30; Or the refractive index is 1.55, the Abbe number is ≥30; Or the refractive index is 1.50 and the Abbe number is ≥58.

6. The zoned myopia alternating function lens according to claim 1, characterized in that: The lens body (1) is covered with a polarizing film (6) on the surface opposite to the surface where the concentric ring structure (10) is located, and the outer side of the polarizing film (6) is also covered with a hardened film (7), and the polarizing film (6) at least completely covers the concentric ring structure (10).

7. The zoned myopia alternating function lens according to claim 6, characterized in that: The polarizing film (6) comprises a main film body (60) and a secondary film body (61) which are bonded to each other. The main film body (60) is placed between the lens body (1) and the hard film (7); the secondary film body (61) is placed between the lens body (1) and the main film body (60) or between the hard film (7) and the main film body (60). The lens body (1), the main film body (60), the secondary film body (61) and the hard film (7) are tightly bonded at the contact points.

8. The zoned myopia alternating function lens according to claim 7, characterized in that: The auxiliary film body (61) is designed with a polarization zone (611) and a light-transmitting zone (612), wherein the polarization zone (611) is annular and covers the hyperopia ring zone (3) one-to-one, and the light-transmitting zone (612) is annular and covers the myopia ring zone (2) one-to-one, and the transmittance of the polarization zone (611) is 38% to 42%, and the transmittance of the light-transmitting zone (612) is 50% to 64%.

9. A method for manufacturing a zoned hyperopia alternating function lens, used for manufacturing the zoned hyperopia alternating function lens according to any one of claims 1 to 8, characterized in that: The steps include: S1: Determine the size of the lens body (1) and the geometric center of the lens body (1), and after positioning the mold at four points, determine that the geometric center of the lens body (1) is consistent with the optical center; S2: According to the lens design data, a processing template is prepared, the lens center is marked on the template, and edge grinding, corner grinding and polishing are performed; S3: attaching a polarizing film (6) and a hardening film (7) to the lens body (1) in sequence, and then performing a secondary grinding process on the edge of the transition zone (5); S4: Performing a second vacuum coating on the lens body (1), coating silicon dioxide and zirconium dioxide according to the designed thickness under vacuum conditions, can further improve the light transmittance of the lens and improve the clarity of the lens.

10. The method for manufacturing a zoned near-far vision alternating function lens according to claim 1, characterized in that: The step S3 comprises the following steps: S31: Determine the central axis points of the lens body (1) and the polarizing film (6); S32: cleaning the surface of the lens body (1); S33: cutting the polarizing film (6); S34: attaching a polarizing film (6) to the inner surface of the lens body (1); S35: Apply additional dura mater (7) by immersion method.

Images