Lens with annularly and alternately arranged cylindrical surface microstructures on surface

Abstract

The lens comprises a lens main body, a concentric circle structure is arranged on the surface of the lens main body, a lens main body area occupied by the concentric circle structure is an annular microstructure distribution area, and a central optical area is formed in a central circular area of the lens main body. The central optical region is positioned on the inner side of the annular micro-structure distribution region; the concentric circle structure comprises a plurality of annular band cylindrical surface microstructures A and annular band cylindrical surface microstructures B, the annular band cylindrical surface microstructures A and the annular band cylindrical surface microstructures B have different axial directions, and the annular band cylindrical surface microstructures A and the annular band cylindrical surface microstructures B are alternately arranged at intervals from inside to outside in the radial direction of the lens main body to generate high-order phase differences; and the area of the annulus microstructure distribution area after the annulus cylindrical microstructure A and the annulus cylindrical microstructure B are removed is a transition area. The two axially designed annular cylindrical surface microstructures are alternately distributed to form irregular astigmatism to generate high-order disturbance on incident wave surfaces of human eyes, so that a better myopia intervention effect is obtained.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of design and processing of optical lenses, and specifically to a lens with annular cylindrical microstructures arranged radially and alternately on the surface. Background Art

[0002] There are many methods for myopia prevention and control, among which glasses, functional glasses, orthokeratology lenses, etc. have been proven to be effective in delaying the progression of myopia. Functional glasses can change the hyperopic defocus of the peripheral retina into myopic defocus through specially designed lenses, thereby obtaining special visual stimulation for the brain and achieving the effect of delaying the progression of myopia. Clinical studies have found that this hyperopic defocus of the peripheral retina is one of the key factors that promote the occurrence and development of myopia. Previous studies have reported that, for example, the design of adding a microlens array to the peripheral area of ​​the lens can convert the hyperopic defocus of the peripheral retina into myopic defocus through the interference of the refractive power of the microlens, which can effectively delay the progression of myopia; and another type of spectacle lens can introduce high-order aberrations and myopic defocus along the radial meridian direction in the peripheral field of the retina by adding a cylindrical microstructure to the peripheral area of ​​the lens, which introduces opposite high-order aberrations to the human eye refractive system in the peripheral defocus area of ​​the retina, and has little effect on the refractive power of the whole eye caused by low-order aberrations, but can produce visual disturbances to the peripheral defocus of the retina, forming new peripheral defocus, which can also effectively delay the progression of myopia.

[0003] The refractive state of the human eye is not a simple spherical refractive state. Most people have a certain amount of astigmatism in both eyes. How to combine the peripheral defocus theory and the visual disturbance effect of high-order aberrations to achieve a better myopia intervention effect has become a focus of this technical field. At present, this design method has not been developed in the field of lens design, and the processing technology has not yet been established. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems and to provide a lens having annular cylindrical microstructures arranged radially and alternately on the surface, which adopts a targeted and reasonable structural design and has a better myopia suppression effect.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A lens with annular cylindrical microstructures arranged radially and alternately on the surface, comprising a lens body, wherein the surface of the lens body is provided with concentric circle structures, and the lens body area occupied by the concentric circle structures is the annular microstructure distribution area, and the concentric circle structures can be distributed on the front surface or the back surface of the lens body or extend to both the front and back surfaces of the lens;

[0007] A circular area with a radius of R1 and a center of the lens body as the center forms a central optical area, and the central optical area is located on the inner side of the annular microstructure distribution area; the concentric circle structure includes a plurality of annular cylindrical microstructures A and annular cylindrical microstructures B, which are protruding or recessed on the surface of the lens body and are continuous annular structures, and the annular cylindrical microstructures A and the annular cylindrical microstructures B have different axial directions, and the annular cylindrical microstructures A and the annular cylindrical microstructures B are arranged in an interlaced manner from the inside to the outside along the radial direction of the lens body to produce high-order phase differences, and the area after the annular cylindrical microstructures A and the annular cylindrical microstructures B in the annular microstructure distribution area is a transition zone.

[0008] Preferably, the concentric circle structure has the geometric center of the lens body as the center, the outermost edge radius of the concentric circle structure is R2, and the annular area between R1 and R2 is defined as the annular microstructure distribution area.

[0009] Preferably, the lens is designed to have a peripheral optical zone or no peripheral optical zone according to the coverage of the annular microstructure distribution area on the lens body: when the outer edge of the annular microstructure distribution area does not cover the edge of the lens body, the area of ​​the lens body outside the annular microstructure distribution area forms the peripheral optical zone; when the outer edge of the annular microstructure distribution area coincides with the edge of the lens body, there is no peripheral optical zone.

[0010] Preferably, the annular cylindrical microstructure A and the annular cylindrical microstructure B both have a substrate and a microstructure, the substrate is integrated with the lens body, and the microstructure is an annular columnar structure protruding outward from the surface of the lens body; one of the annular cylindrical microstructure A and the annular cylindrical microstructure B has a local regular astigmatism degree, the axial direction of the local regular astigmatism degree is the radial meridian direction of the lens body, and the axial directions of the annular cylindrical microstructure A and the annular cylindrical microstructure B are perpendicular to each other, and irregular astigmatism is formed by the axially vertically staggered distribution of the annular cylindrical microstructure A and the annular cylindrical microstructure B, and the irregular astigmatism produces high-order disturbances on the incident wavefront of the human eye.

[0011] Preferably, the peripheral optical zone has the same refractive power as the central optical zone.

[0012] Preferably, the transition zone has the same refractive power as the central optical zone.

[0013] Preferably, the annular microstructure distribution area can generate the same spherical refractive power as the central optical area within the effective working area defined by the pupil size.

[0014] Preferably, the high-order aberrations provided by each layer of the annular cylindrical microstructure A and the annular cylindrical microstructure B in the concentric circle structure are not completely the same.

[0015] Preferably, each layer of the annular cylindrical microstructure A and the annular cylindrical microstructure B in the concentric circle structure provides the same high-order aberrations.

[0016] Preferably, the radial widths of each annular cylindrical microstructure A and annular cylindrical microstructure B in the concentric circle structure are not completely the same, and the spacing distances between each layer of annular cylindrical microstructure A and annular cylindrical microstructure B are not completely the same.

[0017] Compared with the prior art, the lens with annular cylindrical microstructures arranged radially and alternately on the surface of the present invention has the following beneficial effects:

[0018] The surface of the eyeglass lens of the present invention has annular cylindrical microstructures arranged radially and alternately, and the peripheral defocus theory and the visual disturbance effect of high-order aberrations are combined in a diversified manner. After the lens is worn correctly, the convergence degree of the outgoing light rays of the external parallel light rays in the area outside the distribution area of ​​the annular microstructure changes to a refractive power that meets the prescription degree, and has an excellent and stable visual correction effect. The external parallel light rays passing through the distribution area of ​​the annular cylindrical microstructure can introduce spherical radial defocus and high-order aberrations to the eye wearing the lens, which includes a variety of aberration effects, and realizes the coexistence of regular astigmatism and irregular astigmatism in the peripheral field of view in terms of visual effect, which more fully reflects the low-order and high-order disturbances of the incident wavefront of the peripheral field of view of the human eye, and forms a more sufficient new peripheral defocus state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of a lens having annular cylindrical microstructures arranged radially and alternately on the surface of the present invention.

[0020] Figure 2 Schematic diagram of the cross section of the lens body in this embodiment.

[0021] Figure 3 Schematic diagram of the structure of the annular microstructure distribution area in this embodiment.

[0022] Figure 4 It is a cross-sectional schematic diagram of the annular microstructure distribution area in this embodiment.

[0023] Figure 5 This is an enlarged plan view of the possible lens structure when observing foreign objects through the annular microstructure distribution area in this embodiment with a pupil of 4 mm.

[0024] Figure numerals: 1. lens body; 2. central optical area; 3. annular microstructure distribution area; 30. annular cylindrical microstructure A; 31. annular cylindrical microstructure B; 32. transition zone; 4. peripheral optical area. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] 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.

[0027] 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.

[0028] 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.

[0029] The words “include,” “including,” and “have” used in this document are open-ended terms, meaning including but not limited to.

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 4 The lens shown has an annular cylindrical microstructure arranged radially and alternately on the surface, including a lens body 1, a concentric circle structure is arranged on the surface of the lens body 1, and the area of ​​the lens body 1 occupied by the concentric circle structure is the annular microstructure distribution area 3. The concentric circle structure can be distributed on the front surface of the lens body 1 (i.e., the convex surface).

[0033] The central optical area 2 is formed by a circular area with a radius of R1 with the center of the lens body 1 as the center. The specified radius R1 can be 5mm to 10mm. The central optical area 2 is located inside the annular microstructure distribution area 3. The central optical area 2 is one of the main working areas of the lens, and has excellent image quality and stable vision correction effect. The annular microstructure distribution area 3 is located outside the central optical area 2. The radius of the outermost edge of the concentric circle structure is R2. The specified radius R2 can be 20mm or more, that is, the annular area between R1 and R2 is specified as the annular microstructure distribution area 3, and the annular microstructure distribution area 3 is another main working area of ​​the lens. According to the coverage of the annular microstructure distribution area 3 on the lens body 1, it is designed to have a peripheral optical area 4 or no peripheral optical area 4: when the outer edge of the annular microstructure distribution area 3 does not cover the edge of the lens body 1, the lens body 1 forms the peripheral optical area 4 in the area outside the annular microstructure distribution area 3; when the outer edge of the annular microstructure distribution area 3 coincides with the edge of the lens body 1, there is no peripheral optical area 4. The peripheral optical zone 4 is an optional zone. Whether this zone exists is determined according to design requirements. When the peripheral optical zone 4 exists, it has the same physical properties as the central optical zone 2 .

[0034] The concentric circle structure includes a plurality of annular cylindrical microstructures A30 and a plurality of annular cylindrical microstructures B31, the annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 are raised or sunken on the surface of the lens body 1 and are continuous annular structures, and the annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 are arranged in an interlaced manner from inside to outside along the radial direction of the lens body 1. The area after the annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 are removed from the annular microstructure distribution area 3 is a transition area 32. The annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 both have a substrate and a microstructure, the substrate is integrated with the lens body 1, and the microstructure is an annular cylindrical structure protruding outward from the surface of the lens body 1. The annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 have different axial directions, and one of the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 has a local regular astigmatism degree, and the axial direction of the local regular astigmatism degree is the radial meridian direction of the lens body 1, and the axial directions of the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 are perpendicular to each other. Specifically, the annular cylindrical microstructure A30 has a horizontal axial direction, and the annular cylindrical microstructure B31 has a vertical axial direction. Irregular astigmatism is formed by the axially vertically staggered distribution of the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31, and the irregular astigmatism produces high-order disturbances on the incident wavefront of the human eye.

[0035] The annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 are arranged in an interlaced manner from inside to outside along the radial direction of the lens body 1 to produce high-order phase difference. The radial widths of the annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 can be 0.5mm to 2mm, and the radial widths of the annular cylindrical microstructures A30 and the annular cylindrical microstructures B31 at different positions can be the same or different. In addition, the spacing between different adjacent annular cylindrical microstructures A30 and annular cylindrical microstructures B31 can be equal or unequal, and the spacing d can be 0.5mm to 3mm.

[0036] The cross-sectional surface of the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 can be arc-shaped or in other shapes, but it must be ensured that the refractive power of the lens at full aperture meets the prescription degree, and at the same time, the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 meet the higher-order aberrations specified in the design. The selected higher-order aberrations can be rotationally symmetric aberrations, such as equal higher-order spherical aberrations. The same annular cylindrical microstructure A30 or annular cylindrical microstructure B31 can be a single high-order spherical aberration design, or a design with the superposition of several high-order spherical aberrations. The myopic defocus diopter and higher-order aberrations used in the design of different annular cylindrical microstructures A30 or annular cylindrical microstructures B31 can vary with the size of the lens aperture.

[0037] The diameter of the human pupil simulated during lens design is generally 3mm to 6mm, and the effective working area (central optical area 2 and annular microstructure distribution area 3) defined by the pupil size matches it, which is also a circular area of ​​3 to 6mm.

[0038] like Figure 5 As shown in the figure, the effective working area range is limited to 4mm pupil in bright vision environment. Figures 1 to 4 The effective visual area is intercepted within the range of the annular microstructure distribution area 3 on the lens body 1, which is considered to be an area when the eye is looking sideways. At this time, the effective working area can provide local regular astigmatism and irregular astigmatism at the same time. The axial direction of regular astigmatism is the radial meridian direction of the lens, pointing to or opposite to the center of the lens, and irregular astigmatism produces high-order disturbances on the incident wavefront of the human eye. In addition, if Figure 1 As shown, within the annular microstructure distribution area 3, in any effective working area limited by the pupil size, the same spherical refractive power as that of the central optical area 2 can be generated.

[0039] When the lens with such a design having the annular cylindrical microstructure area on the surface is used as a substrate for personalized workshop customization, the rear surface (i.e., concave surface) of the lens body 1 can be used as a customized processing surface for lathe turning. When the design method involved in the present invention is used for injection molding of batch finished products, the special molding structure area corresponding to the annular microstructure distribution area 3 needs to be processed on the side of the injection mold corresponding to the lens body 1, that is, if the convex surface of the injection molded lens body 1 is the surface where the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 are located, the corresponding special molding structure area is processed on the concave surface of the injection mold to ensure that the annular cylindrical microstructure A30 and the annular cylindrical microstructure B31 are located on the front surface of the finished lens.

[0040] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.

Claims

1. A lens having annular cylindrical microstructures arranged radially and alternately on its surface, comprising a lens body (1), characterized in that: The surface of the lens body (1) is provided with a concentric circle structure, and the area of ​​the lens body (1) occupied by the concentric circle structure is an annular microstructure distribution area (3), and the concentric circle structure can be distributed on the front surface or the back surface of the lens body (1) or extend to both the front and back surfaces of the lens; A central optical region (2) is formed in a circular region with a radius R1 and a center of a lens body (1). The central optical region (2) is located inside a ring-shaped microstructure distribution region (3). The concentric circular structure comprises a plurality of ring-shaped cylindrical microstructures A (30) and a plurality of ring-shaped cylindrical microstructures B (31). The ring-shaped cylindrical microstructures A (30) and the ring-shaped cylindrical microstructures B (31) are protruding or recessed on the surface of the lens body (1) and are continuous ring-shaped structures. The ring-shaped cylindrical microstructures A (30) and the ring-shaped cylindrical microstructures B (31) have different axial directions. The ring-shaped cylindrical microstructures A (30) and the ring-shaped cylindrical microstructures B (31) are arranged in an interlaced manner from inside to outside along the radial direction of the lens body (1) to generate high-order phase difference. The region of the ring-shaped microstructure distribution region (3) after excluding the ring-shaped cylindrical microstructures A (30) and the ring-shaped cylindrical microstructures B (31) is a transition region (32).

2. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The concentric circle structure has the geometric center of the lens body (1) as the center, the outermost edge radius of the concentric circle structure is R2, and the annular area between R1 and R2 is defined as the annular microstructure distribution area (3).

3. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1 or 2, characterized in that: According to the coverage of the annular microstructure distribution area (3) on the lens body (1), the lens is designed to have a peripheral optical area (4) or no peripheral optical area (4): When the outer edge of the annular microstructure distribution area (3) does not cover the edge of the lens body (1), the area of ​​the lens body (1) outside the annular microstructure distribution area (3) forms the peripheral optical area (4); when the outer edge of the annular microstructure distribution area (3) coincides with the edge of the lens body (1), there is no peripheral optical area (4).

4. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31) both have a base and a microstructure, the base is integrated with the lens body (1), and the microstructure is an annular cylindrical structure protruding outward from the surface of the lens body (1); one of the annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31) has a local regular astigmatism degree, the axial direction of the local regular astigmatism degree is the radial meridian direction of the lens body (1), and the axial directions of the annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31) are perpendicular to each other, and irregular astigmatism is formed by the axially perpendicular staggered distribution of the annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31), and the irregular astigmatism generates high-order disturbances on the incident wavefront of the human eye.

5. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 3, characterized in that: The peripheral optical zone (4) has the same refractive power as the central optical zone (2).

6. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The transition zone has the same refractive power as the central optical zone (2).

7. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The annular microstructure distribution area (3) can generate the same spherical refractive power as the central optical area (2) within the effective working area defined by the pupil size.

8. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The high-order aberrations provided by each layer of the annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31) in the concentric circle structure are not completely the same.

9. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: Each layer of the annular cylindrical microstructure A (30) and the annular cylindrical microstructure B (31) in the concentric circle structure provides the same high-order aberrations.

10. The lens having annular cylindrical microstructures arranged radially and alternately on the surface according to claim 1, characterized in that: The radial widths of each annular cylindrical microstructure A (30) and annular cylindrical microstructure B (31) in the concentric circle structure are not completely the same, and the spacing distances between each layer of annular cylindrical microstructure A (30) and annular cylindrical microstructure B (31) are not completely the same.

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