Lens based on continuous defocusing and point diffusion superposition technology

Abstract

The utility model discloses a lens based on a continuous defocusing and point diffusion superposition technology, and relates to the technical field of optical lenses. The inner-layer lens structure is located on the inner side of the outer-layer lens structure, and the outer-side arc-shaped surface of the inner-layer lens structure and the inner-side arc-shaped surface of the outer-layer lens structure are attached and integrally formed; the inner-layer lens structure comprises an inner-layer lens body, the surface shape of the inner-layer lens body is a Gaussian curved surface, and a continuous defocus structure is arranged on the Gaussian curved surface; the outer-layer lens structure comprises an outer-layer lens body with single diopter, a bright vision area is arranged at the center of the outer-layer lens body, a second annular belt is arranged on the outer side of the bright vision area of the outer-layer lens body, and a first annular belt is arranged on the outer side of the second annular belt of the outer-layer lens body. The continuous defocusing structure at the center of the inner-layer lens structure and the bright vision area of the outer-layer lens structure are axially overlapped to form central area hyperopia defocusing, so that the optical lens has a central continuous defocusing function, and the defocusing effect is better compared with side central hyperopia defocusing.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, specifically to a lens based on continuous defocusing and dot diffusion superposition technology. Background Technology

[0002] With changes in people's eye habits and the widespread use of electronic products in modern society, myopia has become increasingly common, especially among teenagers, whose myopia rate has shown a year-on-year upward trend. In the field of vision correction and myopia control, new technologies and lens products are constantly being developed to meet people's needs for clear vision and effectively slow down the progression of myopia.

[0003] In the prior art, a lens with publication number CN222189613U that utilizes microstructure and dot diffusion superposition technology to suppress axial elongation belongs to the field of optical lens technology. It includes a lens body, which comprises a primary lens structure, a dot diffusion ring structure, a microlens ring structure, and a zone of clear vision. The zone of clear vision is located at the center of the primary lens structure. The dot diffusion ring structure and the microlens ring structure are alternately arranged on the primary lens structure around the center, forming a dual-effect suppression zone, which is located outside the zone of clear vision.

[0004] However, in this prior art, through the combined design of the main lens structure, the dot diffusion ring structure, the microlens ring structure, and the zone of clear vision, when the glasses are not worn correctly, or the eyeglass frame is deformed or tilted, the eye's line of sight is outside the zone of clear vision. In contrast, the other areas of the prior art have relatively lower visual clarity compared to the zone of clear vision, thus affecting the actual use effect of the lens. Utility Model Content

[0005] To address the aforementioned technical problems, this application solves the problem in the prior art where, due to the combined design of the main lens structure, dot diffusion ring structure, microlens ring structure, and visual field zone, when the glasses are not worn correctly, such as when the eyeglass frame is deformed or tilted, the eyes may not be able to accurately see through the visual field zone, resulting in decreased visual clarity and affecting the actual use effect of the lenses.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a lens based on continuous defocusing and dot diffusion superposition technology, comprising an inner lens structure and an outer lens structure.

[0007] The inner lens structure is located inside the outer lens structure, and the outer arc-shaped surface of the inner lens structure is bonded to the inner arc-shaped surface of the outer lens structure and integrally formed.

[0008] The inner lens structure includes an inner lens body, the surface of which is a Gaussian curved surface, and a continuous defocusing structure is provided on the Gaussian curved surface;

[0009] The outer lens structure includes an outer lens body with a single refractive power, the center of the outer lens body is provided as a zone of clear vision, the outer surface of the outer lens body located on the outer side of the zone of clear vision is provided as a second annular band, and the outer surface of the outer lens body located on the outer side of the second annular band is provided as a first annular band.

[0010] To better realize this utility model, further, the first annular belt and the second annular belt are provided with point diffusion structures, and the point diffusion structures are multiple annular belts arranged in a circular array of multiple light diffusion points.

[0011] To better realize this utility model, the haze value of the second annular belt gradually increases from the central region of the second annular belt outwards in a radial pattern.

[0012] To better realize this utility model, the width of the second annular belt is further 3 to 5 mm.

[0013] To better realize this utility model, the visible area is further defined as having a circular shape with a diameter greater than or equal to 3 mm and less than 5 mm.

[0014] To better realize this utility model, the lens is further configured as a microlens structure on the arc-shaped surface outside the first annular band.

[0015] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0016] 1. In this utility model, the continuous defocus structure at the center of the inner lens structure overlaps axially with the visible area of ​​the outer lens structure to form a central hyperopic defocus, which has the function of central continuous defocus. Compared with peripheral hyperopic defocus, its defocus effect is better and can more effectively intervene in the abnormal growth of the axial length, which has a positive significance for the prevention and control of myopia.

[0017] 2. In practical use, eyeglasses often become misaligned or the frames deform, causing the eye to see outside the photopic vision area. In existing technologies, this results in reduced clarity when viewing objects through the non-photopic vision area. However, the lens of this invention features a continuous defocus structure covering the photopic vision area. Even if the glasses are worn crookedly, it will not affect the user's viewing clarity, thus reducing the requirements for frame stability. For example, for active children, glasses may become crooked while jumping, but the lens of this invention can still ensure clear vision, greatly improving the lens's practicality and applicability in daily life.

[0018] 3. The second annular band of this invention features a gradual haze design, making the transition between the central area and the surrounding areas smoother and easier for the eyes to adapt to. Unlike the stepped transition between the visible area and the surrounding areas in existing technologies, the smooth transition of this invention avoids eye discomfort caused by sudden changes in light focusing. Wearers can switch their focus more naturally while viewing objects, reducing visual fatigue and improving comfort during extended wear.

[0019] 4. The present invention features a circular viewing area with a diameter of 3mm or more and less than 5mm. This design facilitates photometric measurement during processing, allowing for a brighter field of view. Furthermore, within the diameter range of 3mm or more and less than 5mm, the contrast effect of the dot diffusion technology is maximized. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the inner lens structure in this utility model;

[0023] Figure 3 This is a schematic diagram of the outer lens structure in this utility model.

[0024] In the diagram: 100 - Inner lens structure; 200 - Outer lens structure; 101 - Inner lens body; 102 - Continuous defocus structure; 103 - Microlens structure; 201 - Outer lens body; 202 - First annular band; 203 - Second annular band; 204 - Photopic zone. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Example 1:

[0032] like Figures 1 to 3 As shown, a lens based on continuous defocus and dot diffusion superposition technology includes an inner lens structure 100 and an outer lens structure 200.

[0033] The inner lens structure 100 is located inside the outer lens structure 200, and the outer arc-shaped surface of the inner lens structure 100 is bonded to the inner arc-shaped surface of the outer lens structure 200 and integrally formed.

[0034] The inner lens structure 100 includes an inner lens body 101, the surface shape of which is a Gaussian curved surface, and a continuous defocusing structure 102 is provided on the Gaussian curved surface.

[0035] The outer lens structure 200 includes an outer lens body 201 with a single refractive power. The center of the outer lens body 201 is provided as a zone of clear vision 204. The outer surface of the outer lens body 201 located in the zone of clear vision 204 is provided as a second annular band 203. The outer surface of the outer lens body 201 located in the second annular band 203 is provided as a first annular band 202.

[0036] like Figures 1 to 3 As shown, in this embodiment, both the first annular strip 202 and the second annular strip 203 are provided with point diffusion structures. The point diffusion structures are multiple annular strips arranged in a circular array of multiple light diffusion points.

[0037] like Figures 1 to 3 As shown, in this embodiment, the haze value of the second annular band 203 gradually increases from the central region of the second annular band 203 outwards in a radial pattern.

[0038] like Figures 1 to 3 As shown, in this embodiment, the width of the second annular belt 203 is 3-5 mm.

[0039] like Figures 1 to 3 As shown, in this embodiment, the visible area 204 is circular in shape, with a diameter greater than or equal to 3 mm and less than 5 mm.

[0040] like Figures 1 to 3 As shown, in this embodiment, the lens is further configured as a microlens structure 103 on the arc-shaped surface outside the first annular band 202.

[0041] In this invention, the continuous defocus structure at the center of the inner lens structure overlaps axially with the visible area of ​​the outer lens structure to form a central hyperopic defocus, which has the function of central continuous defocus. Compared with peripheral hyperopic defocus, its defocus effect is better and can more effectively intervene in the abnormal growth of the axial length, which has a positive significance for the prevention and control of myopia.

[0042] In practical use, eyeglasses often become misaligned or the frames deform, causing the eye to see outside the photopic vision area. In existing technologies, this results in reduced clarity when viewing objects through the non-photopic vision area. However, the lens of this invention features a continuous defocus structure covering the photopic vision area. Even if the glasses are worn crookedly, it does not affect the user's viewing clarity, thus reducing the requirements for frame stability. For example, for active children, whose glasses may tilt during jumping, the lens of this invention still ensures clear vision, greatly improving its practicality and applicability in daily life.

[0043] The second annular band of this invention features a gradual haze design, resulting in a smoother transition between the central and surrounding areas, making it easier for the eyes to adapt. Unlike existing technologies where the transition between the clear vision zone and the surrounding areas is stepped, this invention's smooth transition avoids eye discomfort caused by sudden changes in light focusing. Wearers can switch their focus more naturally while viewing objects, reducing visual fatigue and improving comfort during extended wear.

[0044] This invention features a circular viewing area with a diameter ranging from 3mm to 5mm. This design facilitates photometric measurement during processing, allowing for a brighter field of view. Furthermore, within this diameter range, the contrast effect of the dot diffusion technology is maximized.

[0045] It is worth noting that the use of Gaussian curved surfaces for continuous defocusing structures on individual lenses is a mature existing technology.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lens based on continuous defocus and dot diffusion superposition technology, characterized in that: It includes an inner lens structure (100) and an outer lens structure (200). The inner lens structure (100) is located inside the outer lens structure (200), and the outer arc-shaped surface of the inner lens structure (100) is bonded to the inner arc-shaped surface of the outer lens structure (200) and integrally formed. The inner lens structure (100) includes an inner lens body (101), the surface shape of which is a Gaussian surface, and a continuous defocusing structure (102) is provided on the Gaussian surface; The outer lens structure (200) includes an outer lens body (201) with a single refractive power, the center of the outer lens body (201) is provided as a zone of clear vision (204), the outer surface of the outer lens body (201) located in the zone of clear vision (204) is provided as a second annular band (203), and the outer surface of the outer lens body (201) located in the second annular band (203) is provided as a first annular band (202).

2. A lens based on continuous defocus and dot diffusion superposition technology according to claim 1, characterized in that: Both the first annular strip (202) and the second annular strip (203) are provided with point diffusion structures, which are multiple annular strips arranged in a circular array of multiple light diffusion points.

3. A lens based on continuous defocus and dot diffusion superposition technology according to claim 2, characterized in that: The haze value of the second annular band (203) gradually increases from the central region of the second annular band (203) outwards in a radial pattern.

4. A lens based on continuous defocus and dot diffusion superposition technology according to claim 3, characterized in that: The width of the second annular belt (203) is 3 to 5 mm.

5. A lens based on continuous defocus and dot diffusion superposition technology according to claim 4, characterized in that: The visible area (204) is circular in shape, with a diameter of 3 mm or more and less than 5 mm.

6. A lens based on continuous defocus and dot diffusion superposition technology according to claim 5, characterized in that: The lens is further configured as a microlens structure (103) on the arc-shaped surface outside the first annular band (202).

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