CN214795465U

CN214795465U - Lens capable of avoiding asthenopia and inhibiting myopia development

Info

Publication number: CN214795465U
Application number: CN202120661323.0U
Authority: CN
Inventors: 李锋
Original assignee: Jiangsu Dianjin Optical Glasses Co ltd
Current assignee: Jiangsu Dianjin Optical Glasses Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-19
Anticipated expiration: 2031-04-01

Abstract

The utility model belongs to the technical field of the lens, in particular to can avoid lens of tired inhibition myopia development of eye, two mirror surfaces of lens are object side surface and eye side surface respectively, the lens divide into upper portion lens and lower part lens, the lens of upper portion lens for can inhibiting myopia development when correcting myopia, there is second refraction region on the upper portion lens, second refraction region uses a plurality of mutually independent island district to distribute to exist, each island district is the protruding globular thing of formation of outside arch on the object side surface, still exist on the upper portion lens and the first refraction region of second refraction region for mixing the setting, the refractive power of each island district is different with the refractive power size of first refraction region.

Description

Lens capable of avoiding asthenopia and inhibiting myopia development

Technical Field

The utility model belongs to the technical field of the lens, in particular to can avoid asthenopia's lens of restraining near-sighted development.

Background

With the higher and higher requirements of people on the glasses, more multifunctional glasses lenses gradually enter the sight of people. Among them, there is a lens contributing to the inhibition of the further development of myopia, which has a function of focusing an image on a point in front of the retina of an eye in addition to focusing an image on the retina of the eye, and when a patient views an object using this lens, an image of the object is formed on the retina and an image is also formed on a point in front of the retina, so that the image of the object can be visually recognized and an effect of inhibiting the development of myopia can be obtained based on the image formed in front of the retina.

However, the applicant has found in work that such lenses are suitable for use by the wearer to look away from the eyes, with desirable visual effects and myopia-inhibiting effects, such as looking away outdoors and looking toward the blackboard after the lens is worn by students; however, when the lens is worn to observe only objects in close range, visual blurring and vertigo are significantly increased, visual fatigue is likely to occur, and visual acuity is further affected. However, when a student is in class, the student needs to watch the blackboard for a moment and needs to look at books with a head down for a moment, the sight line is frequently changed, and the student is inconvenient if frequently takes off and wears the glasses in the process and can also influence the class listening effect of the student.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, the present invention provides a lens for inhibiting the development of myopia, which can avoid asthenopia, wherein two mirror surfaces of the lens are an object side surface and an eye side surface respectively, the lens is divided into an upper lens and a lower lens according to the upper and lower positions, the upper lens is a lens capable of inhibiting the development of myopia while correcting myopia,

the upper lens is provided with a second refraction area which is distributed in a plurality of independent island areas, each island area is a convex ball-shaped object which is formed by protruding outwards on the side surface of the object,

the upper lens is also provided with a first refraction area which is mixed with the second refraction area, and the first refraction area can be specifically: the areas of the upper lens except the second dioptric area are continuous first dioptric areas, the power of each island area of the second dioptric area is different from the power of the first dioptric area,

wherein the first dioptric region has a function of focusing an image on the retina of the eye, and the second dioptric region has a function of focusing an image on a point in front of the retina of the eye, so that the wearer forms an image of an object on the retina through the first dioptric region while inhibiting the development of myopia by imaging the second dioptric region in front of the retina when viewing through the upper lens,

preferably, the method comprises the following steps: except the second dioptric region, the whole lens is a progressive multi-focal lens, the upper part of the progressive multi-focal lens is a distance area, the middle part of the progressive multi-focal lens is a gradual change area, and the lower part of the progressive multi-focal lens is a near area, specifically, on the whole lens, the upper lens is a distance area, the lower lens is a combination of the gradual change area and the near area,

preferably, the method comprises the following steps: a prism is additionally arranged on the lower lens,

preferably, the method comprises the following steps: the islands are distributed on the upper lens near its bottom line and centered,

further: the region with island distribution is in the shape of a sector ring, the central angle of the sector ring is 180-240 degrees, and the notch of the sector ring is arranged downwards.

Drawings

Fig. 1 is a schematic view showing the structural distribution of the lens of example 1 (the arc-shaped dotted line indicates a virtual boundary between the upper lens and the lower lens and between different zones of the progressive addition lens), in which the outer circle diameter of the sector ring is 40mm, the inner circle diameter is 16mm, the center of the sector ring is concentric with the geometric center of the entire lens, the following is the same,

figure 2 is a schematic view of the structural distribution of the lens of example 2 (the dashed line of the arc represents the virtual dividing line between the upper and lower lenses),

figure 3 is a schematic view of the structural distribution of the lens of example 3 (the dashed line of the arc represents the virtual dividing line between the upper and lower lenses),

wherein, 1-first dioptric region, 2-island region, 3-far region, 4-gradient region, 5-near region,

the diameter of the circle of each island on the lens is 0.2mm, and the luminosity of the island can be as follows: radially outward of the lens, the islands increase in magnitude by 50 degrees per revolution.

Detailed Description

It should be noted that the words "upper" and "lower" used in the description of the present invention refer to directions in the drawings, and "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component (e.g., "lens"), which are merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

As shown in figure 1, the lens for inhibiting the development of myopia of the present invention can avoid asthenopia, wherein the two mirror surfaces are the object side surface and the eye side surface, respectively, the object side surface is a convex surface facing the object, the eye side surface is a concave surface facing the eye, the curvature of the eye side surface is greater than that of the object side surface,

the lens is divided into an upper lens and a lower lens according to the upper position and the lower position, a second refraction area is arranged on the upper lens and is distributed in a plurality of mutually independent island areas 2, each island area 2 is a convex ball-shaped object formed by outward protrusion on the side surface of the object, the area with the island areas 2 is in a fan-shaped ring shape, the central angle of the fan-shaped ring is 210 degrees, the gap of the fan-shaped ring is vertically arranged downwards, a distance is arranged between the outer arc line of the fan-shaped ring and the periphery of the mirror surface along the radial direction of the mirror surface,

the areas of the upper lens except the second dioptric area are all continuous first dioptric areas 1, and the refractive power of each island area 2 of the second dioptric area is different from that of the first dioptric area 1;

except for the second dioptric region, the whole lens is a progressive addition lens, the upper part of the progressive addition lens is a distance area 3, the middle part of the progressive addition lens is a gradual change area 4, and the lower part of the progressive addition lens is a near area 5, specifically, on the whole lens, the upper lens is the distance area 3, and the lower lens is the combination of the gradual change area 4 and the near area 5.

When the lens of the embodiment 1 is worn to look up head and look far away, the sight of the eyes more passes through the upper lens, so that the first dioptric region 1 focuses the image on the retina of the eyes, namely forms the image of an object on the retina, the effect of correcting myopia is realized, and meanwhile, the second dioptric region focuses the image on a point in front of the retina of the eyes to play a role in inhibiting the further development of the myopia; when the lens of the embodiment 1 is worn to look down at nearby objects (such as reading books), the sight line of the eyes moves downwards on the lens, at the moment, the sight line penetrates through the lower lens more, the interference of the second dioptric area can be obviously avoided, the phenomena of blur, dizziness, image jump and the like during the near-viewing are greatly reduced,

further, the second dioptric area is designed into a fan-shaped ring with a vertically downward notch, so that the second dioptric area closer to the lower lens expands towards two sides, and further, the interference of the second dioptric area on a small part of sight lines left in the upper lens can be avoided;

meanwhile, the basic lens in the embodiment 1 adopts a progressive multi-focus lens, and the lens power is reduced when the lens is worn for near vision, so that the myopic power can be delayed from being deepened.

Example 2

As shown in the attached figure 2, the lens for inhibiting the development of myopia of the present invention can avoid asthenopia, wherein the two mirror surfaces are the object side surface and the eye side surface, the object side surface is a convex surface facing the object, the eye side surface is a concave surface facing the eye, the curvature of the eye side surface is greater than the curvature of the object side surface, the lens is divided into an upper lens and a lower lens according to the upper and lower positions, the upper lens is a lens capable of inhibiting the development of myopia while correcting myopia,

the upper lens is provided with a second refraction area which is distributed by a plurality of mutually independent island areas 2, each island area 2 is a convex ball-shaped object formed by outward protrusion on the side surface of the object, the area with the island areas 2 is in a fan-shaped ring shape, the central angle of the fan-shaped ring is 210 degrees, the gap of the fan-shaped ring is vertically arranged downwards, the radial direction of the mirror surface is followed, the outer arc line of the fan-shaped ring has a distance from the peripheral edge of the mirror surface,

the areas of the upper lens except the second dioptric area are all continuous first dioptric areas 1, the refractive power of each island area 2 of the second dioptric area is different from that of the first dioptric area 1, the first dioptric area 1 focuses the image on the retina of the eye, namely the image of an object is formed on the retina, the myopia correction effect is achieved, and meanwhile the second dioptric area focuses the image on a point in front of the retina of the eye to achieve the effect of inhibiting the myopia from further developing;

the lower lens is a single-vision lens for correcting myopia.

Example 3

the lower lens is a single-light lens for correcting myopia, and the prism with an inward bottom is additionally arranged on the lower lens, so that the cohesion of eyeballs of a wearer when the wearer looks near is reduced through the deviation effect of the prism, the wearer can relax as far as the wearer looks near, the long-time collection of eye muscles is reduced, the elongation of the axis of the eye is prevented, and the myopia is prevented from deepening.

Claims

1. A lens for inhibiting the progression of myopia while avoiding asthenopia, comprising: the two mirror surfaces of the lens are respectively the object side surface and the eye side surface, the lens is divided into an upper lens and a lower lens according to the upper position and the lower position, the upper lens is the lens which can correct myopia and inhibit the development of myopia,

the upper lens is provided with a second refraction area which is distributed and arranged in a plurality of independent island areas (2), each island area (2) is a convex ball which is formed by protruding outwards on the side surface of the object,

the upper lens is also provided with a first refraction area (1) which is mixed with the second refraction area, and the refractive power of each island area (2) is different from that of the first refraction area (1).

2. A lens for inhibiting the progression of myopia which avoids ocular fatigue as in claim 1 wherein: the entire lens is a progressive addition lens except for the second dioptric area, the upper part of the progressive addition lens is a distance area, the middle part of the progressive addition lens is a gradual change area, and the lower part of the progressive addition lens is a near area.

3. A lens for inhibiting the progression of myopia which avoids ocular fatigue as in claim 1 wherein: and a prism is additionally arranged on the lower lens.

4. A lens for inhibiting the progression of myopia which avoids ocular fatigue as in claim 1 wherein: each island (2) is distributed on the upper lens at a position close to the bottom line and in the middle.

5. A lens for inhibiting the progression of myopia which avoids ocular fatigue as in claim 1 wherein: the region distributed by the island regions (2) is in a fan-shaped ring shape, and the notches of the fan-shaped ring are arranged downwards.

6. The lens for inhibiting the progression of myopia that avoids ocular fatigue of claim 5, wherein: the central angle of the fan-shaped ring is 180-240 degrees.