Lens giving consideration to near balanced light intensity and far out-of-focus stimulation

Abstract

The utility model discloses a lens giving consideration to both near balanced light intensity and far out-of-focus stimulation, which comprises a substrate, a far out-of-focus area and a near light intensity balance area, the substrate is a refractive lens, and the far out-of-focus area and the near light intensity balance area are respectively arranged on the substrate; the far defocus area is located in a micro-lens area which is annularly distributed in the center of the substrate, and the near light intensity balance area is located in a scatterer area which is distributed in a fan shape on the nose side of the eyes. The utility model has the beneficial effects that: on the premise of ensuring that the correction diopter of the central field of view is not correct, the eyeground light intensity distribution can be improved, the eyeground light intensity can be balanced and the imaging contrast can be reduced when eyes are used at a short distance and a nose side lens area is used; the non-nasal side lenses can be used in a large range during long-distance object viewing, defocus signal stimulation can be provided, and the lenses can provide different myopia management schemes at different distances.

Description

Technical Field

[0001] The utility model relates to a myopia management lens, in particular to a lens that takes into account the balanced near-use light intensity and far-use defocus stimulation, and belongs to the technical field of spectacle lenses. Background Art

[0002] High retinal imaging contrast and hyperopic defocus are currently considered by the clinic to be the main reasons for increasing the risk of myopia and exacerbating myopia. In response to the above two viewpoints, myopia can be corrected and the development of myopia can be delayed by balancing the fundus imaging contrast and increasing peripheral multi-point defocus to stimulate the fundus. For example:

[0003] (1) Increasing peripheral multi-point defocus to stimulate the fundus: For example, the patent "Eyeglass Lens" (2013106281748) discloses an eyeglass lens for correcting peripheral hyperopic defocus of the retina. This eyeglass lens is composed of a first refractive region located in the central part and a second refractive region located in the peripheral part. The first refractive region is a uniformly smooth refractive mirror surface, and the second refractive region is a 360° circular refractive surface composed of a plurality of independent island-shaped micro-lenses.

[0004] (2) Balancing fundus imaging contrast: For example, the patent "Ophthalmic Lens for Treating Myopia" (201780052098.7) discloses a lens. A dot pattern is distributed on each lens. The dot pattern includes an array of dots spaced at a distance of 1 mm or less, and each dot has a maximum size of 0.3 mm or less. The dot pattern includes a light-transmitting aperture without dots, and the light-transmitting aperture has a maximum size greater than 1 mm. A prominent feature of this lens is that except for a transparent small circular hole in the center, other areas seem to be "frosted" and like a semi-permeable membrane is pasted.

[0005] Both of the above two types of lenses can inhibit the abnormal growth of the eye axis and delay the deepening of myopia. However, although the peripheral multi-point defocus lens can achieve a partial effect of balancing contrast, the effect is weak; the lens for balancing fundus imaging contrast can balance the contrast, but fails to effectively deal with hyperopic defocus; moreover, the above two types of lenses do not consider the different functions required by the user at different viewing distances. How to design and manufacture a multi-faceted myopia management lens that can balance the fundus imaging contrast when used near and can utilize peripheral multi-point defocus to stimulate the fundus when used far has become an urgent problem to be solved currently. Summary of the Invention

[0006] Objective of the Invention: The objective of the present utility model is to address the problems of the prior art and provide a lens that takes into account the balanced light intensity for near vision and the defocus stimulation for far vision. When used for near vision while ensuring the correction of refractive error in the central visual field, using the nasal lens area can improve the light intensity distribution in the fundus, balance the fundus light intensity, and reduce the imaging contrast; when viewing objects at a long distance, using the non-nasal lens area over a large range can provide defocus signal stimulation, and the lens can provide different myopia management solutions at different near and far distances.

[0007] Technical Solution: A lens that takes into account the balanced light intensity for near vision and the defocus stimulation for far vision, including a base, a far vision defocus area, and a near vision light intensity balance area. The base is a refractive lens, and the far vision defocus area and the near vision light intensity balance area are respectively provided on the base. The far vision defocus area is a micro-lens area distributed in a ring shape at the center of the base, and the near vision light intensity balance area is a scatterer area distributed in a fan shape on the nasal side of the eye. The base provides the diopter required for vision correction, the far vision defocus area provides the defocus stimulation signal required for long-distance vision, the near vision light intensity balance area is used to balance the light intensity in the fundus during near vision, the far vision defocus area is distributed with several micro-structures such as micro-lenses and micro-cylindrical lenses, and the near vision light intensity balance area is distributed with several scatterers.

[0008] Preferred Option: To improve the versatility of the lens, the lens is designed in a symmetrical form without distinguishing between the left and right eyes, and the near vision light intensity balance areas are respectively provided on the nasal side and the temporal side of the eye, that is, the near vision light intensity balance areas are symmetrically distributed on the nasal side and the temporal side of the eye.

[0009] Preferred Option: The number of rings in the ring-shaped micro-lens area of the far vision defocus area is not less than 3 rings, the additional diopter range of the micro-lens is -6D to +6D, and the effective diameter range of the micro-lens is 0.4 to 1.8 mm.

[0010] Preferred Option: The types of additional diopters of the micro-lenses in the far vision defocus area are not less than 1 type.

[0011] Preferred Option: For the convex or concave scatterers in the near vision light intensity balance area, the effective diameter range is 0.1 to 0.8 mm, and the interval between the scatterers is less than 1 mm.

[0012] Preferred Option: The size of the scatterers monotonically increases or decreases outward along the center of the lens.

[0013] Preferred Option: The scatterers are distributed with variable intervals, monotonically increasing or decreasing outward along the center of the lens.

[0014] Preferred Option: The included angle range of the fan shape of the near vision light intensity balance area is 30° to 180°, and the distribution area of the scatterers accounts for 20% to 100% of the area of the fan-shaped area.

[0015] Preferred Option: The light intensity contrast of the fundus imaging in the near vision light intensity balance area is reduced by 0.2% to 60% compared with the fundus imaging light intensity of the base.

[0016] Beneficial effects: On the premise that the present utility model ensures the correction of refractive error in the central visual field and is used for near vision, when using the nasal lens area, it can improve the light intensity distribution in the fundus, balance the fundus light intensity, and reduce the imaging contrast; when viewing objects at a long distance, widely using non-nasal lenses can provide defocus signal stimulation, and the lens can provide different myopia management solutions at different near and far distances; according to the characteristics of the left and right eyes, the lens function distribution is designed in a form that separates the left and right eyes, that is, only the nasal side of the eye is provided with a near light intensity balance area and a symmetrical form regardless of the left and right eyes, that is, the near light intensity balance areas are symmetrically distributed on the nasal and temporal sides of the eye. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0018] Figure 1 It is a schematic structural diagram of the right lens of the asymmetric form of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the symmetric form of the lens of the present utility model. Detailed Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0022] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0023] A lens that takes into account the balanced light intensity for near vision and the defocus stimulation for far vision, comprising a base 1, a far vision defocus area 2 and a near vision light intensity balance area 3. The base 1 provides the diopter required for correcting vision. The far vision defocus area 2 provides the defocus stimulation signal required for far vision use. The near vision light intensity balance area 3 is used to balance the light intensity at the fundus during near vision use. The far vision defocus area 2 is distributed with several microstructures such as microlenses and microcylinders. The near vision light intensity balance area 3 is distributed with several scatterers. The far vision defocus area 2 includes at least 3 rings of microstructures. The additional diopter range of the microstructures is -6D to +6D, and the effective diameter range of the microstructures is 0.4 to 1.8 mm. There is at least 1 kind of additional diopter of the microstructures in the far vision defocus area 2. The scatterers in the near vision light intensity balance area 3 include convex or concave dot-like, spherical, hemispherical, Gaussian-type shapes, etc., with an effective diameter of 0.1 to 0.8 mm. The distribution of the scatterers is not limited to random, semi-random, regular and other forms, and the interval between the scatterers is less than 1 mm; the sizes of the scatterers in the near vision light intensity balance area 3 are not limited to 1 kind, and can also monotonically increase or decrease outward along the center of the lens. The included angle range between the two sides OA and OB of the near vision light intensity balance area 3 is 30° to 180°, and the distribution area of the scatterers accounts for 20% to 100% of the sector area formed by the two sides OA and OB. The light intensity contrast of the fundus imaging in the near vision light intensity balance area 3 is reduced by 0.2% to 60% compared with the fundus imaging light intensity of only the base. The near vision light intensity balance area 3 is distributed on the nasal side or simultaneously distributed on the nasal side and the symmetric temporal side. The scatterers are not limited to being made by methods such as molds, inkjet printing, photocuring, laser etching, embossing, thermal printing, etc. The surface type of the base 1 can be spherical surface, aspherical surface, freeform surface, toric surface, etc. Embodiment 1

[0024] Figure 1It is a right spectacle lens in an asymmetrical form for the left and right eyes, a lens that takes into account the balanced light intensity for near vision and the defocus stimulation for far vision, and includes a base 1, a far vision defocus area 2, and a near vision light intensity balance area 3. The far vision defocus area 2 includes a microstructure of 13 rings, the additional diopter of the microstructure is +5D, and the effective diameter of the microstructure is 1 mm. The scatterers in the near vision light intensity balance area 3 are in a sunken dot shape, with an effective diameter of 0.2 mm, randomly distributed, and the maximum interval of the scatterers is 0.5 mm. The included angle between OA and OB in the near vision light intensity balance area 3 is 75°, and the distribution area of the scatterers accounts for 83% of the fan-shaped area formed by OA and OB. The light intensity contrast of the fundus imaging in the near vision light intensity balance area 3 is reduced by 2% compared with the fundus imaging light intensity of only the base. The near vision light intensity balance area 3 is distributed on the nasal side of the eye. The scatterers are made by laser etching. The surface shape of the base 1 is an aspherical surface. Embodiment 2

[0025] Figure 2 It is a symmetrical form without distinguishing between the left and right eyes, a lens that takes into account the balanced light intensity for near vision and the defocus stimulation for far vision, and includes a base 1, a far vision defocus area 2, and a near vision light intensity balance area 3. The far vision defocus area 2 includes a microstructure of 13 rings, the additional diopter of the microstructure is +4D, and the effective diameter of the microstructure is 1.2 mm. The scatterers in the near vision light intensity balance area 3 are in a sunken dot shape, with an effective diameter of 0.15 mm, randomly distributed, and the maximum interval of the scatterers is 0.3 mm. The included angle between OA and OB in the near vision light intensity balance area 3 is 75°, and the distribution area of the scatterers accounts for 85% of the fan-shaped area formed by OA and OB. The light intensity contrast of the fundus imaging in the near vision light intensity balance area 3 is reduced by 1% compared with the fundus imaging light intensity of only the base. The near vision light intensity balance area 3 is distributed on the nasal side and the temporal side of the eye. The scatterers are made by laser etching. The surface shape of the base 1 is an annular focal surface.

[0026] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lens that takes into account both near-eye balanced light intensity and far-eye defocus stimulation, comprising a substrate (1), a far-eye defocus area (2) and a near-eye light intensity balanced area (3), wherein the substrate (1) is a refractive lens, and the far-eye defocus area (2) and the near-eye light intensity balanced area (3) are respectively arranged on the substrate (1); characterized in that: The distance vision defocus area (2) is located in the microlens area distributed in a ring shape at the center of the base (1), and the near vision light intensity balance area (3) is located in the scatterer area distributed in a fan shape on the nasal side of the eye.

2. The lens that takes into account the near-use balanced light intensity and the far-use defocus stimulation according to claim 1, wherein: Near vision light intensity balance areas (3) are respectively provided on the nasal side and the temporal side of the eye.

3. The lens that takes into account the near-use balanced light intensity and the far-use defocus stimulation according to claim 1 or 2, characterized in that: The number of rings of the ring-shaped microlens area of the distance vision defocus area (2) is not less than 3 rings, the additional diopter range of the microlens is -6D to +6D, and the effective diameter range of the microlens is 0.4 to 1.8 mm.

4. The lens according to claim 3, which takes into account the near-use balanced light intensity and the far-use defocus stimulation, is characterized in that: The types of additional diopters of the microlenses in the distance vision defocus area (2) are not less than 1 type.

5. The lens that takes into account the near-use balanced light intensity and the far-use defocus stimulation according to claim 1 or 2, characterized in that: For the convex or concave scatterers in the near vision light intensity balance area (3), the effective diameter range is 0.1 to 0.8 mm, and the interval between the scatterers is less than 1 mm.

6. The lens according to claim 5 that takes into account the near-use balanced light intensity and the far-use defocus stimulation, characterized in that: The size of the scatterers increases or decreases monotonically from the center of the lens outwards.

7. The lens that takes into account the near-use balanced light intensity and the far-use defocus stimulation according to claim 5, characterized in that: The scatterers are distributed with variable intervals, increasing or decreasing monotonically from the center of the lens outwards.

8. The lens that takes into account the near-use balanced light intensity and the far-use defocus stimulation according to claim 1 or 2, characterized in that: The included angle range of the fan shape of the near vision light intensity balance area (3) is 30° to 180°, and the distribution area of the scatterers accounts for 20% to 100% of the area of the fan-shaped area.

9. The lens according to claim 1, which takes into account the near-use balanced light intensity and the far-use defocus stimulation, is characterized in that: The light intensity contrast of the fundus imaging in the near vision light intensity balance area (3) is reduced by 0.2% to 60% compared with the light intensity of the fundus imaging of the base.

Images