CN217639824U

CN217639824U - All-focus lens for delaying hyperopia development

Info

Publication number: CN217639824U
Application number: CN202221694140.XU
Authority: CN
Inventors: 汪山献松; 李品秧; 郑浩
Original assignee: Zhejiang Weixing Optical Co ltd
Current assignee: Zhejiang Weixing Optics Co.,Ltd.
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-21
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a delay full focus lens of hyperopia development relates to glasses technical field, the surface of lens body adopts sphere or aspheric surface design, and interior surface type all adopts out of focus structural design, and central zone is the stable light area, and peripheral number of degrees changes according to the functional relation formula, and central zone looks at the thing formation of image and falls on the retina completely, and peripheral zone looks at the thing formation of image and falls on the retina rear completely, and the induced axis of the eye is elongated, delays the increase of the hyperopia of eyes. The lens is suitable for any hypermetropia patients, and has better effect on the adolescent hypermetropia patients.

Description

All-focus lens for delaying hyperopia development

Technical Field

The utility model belongs to the technical field of glasses equipment, especially, relate to a full focus lens that delays hyperopia development.

Background

The market scale of Chinese spectacle lenses is steadily increased, the sales rate is increased slightly more than the sales rate, and the product average price is also continuously improved. With the increase of income and the increase of eyesight protection demand of residents, the scale of domestic lens markets is steadily increased, the retail sale of Chinese eyeglass lens markets in 2021 year reaches 314 hundred million yuan, the retail sale is increased by 11 percent (increased by 1 percent in 2019 year), and the composite growth rate in 5 years (2016-2021 year) reaches 4 percent. The actual need for lens growth is related to two aspects, on the one hand, the frequency with which the wearer updates the resin lenses increases, and as the standard of living increases, the need for many people to wear multiple lenses is constantly present. On the other hand, the demand for functional lenses is increasing, and in recent years, a large number of patents and products are emerging for inhibiting the development of myopia.

For example: chinese patent document discloses an electric alternate covering myopia control glasses [ application number: CN201721036568.4], the electric alternate covering myopia control glasses of the invention are beneficial to relieving eye fatigue, and controlling the increase of myopia degree of eyes.

For another example, the chinese patent document discloses a myopia control glasses for students [ application No.: CN201820834348.4], wherein the primary lens is a concave lens, and the secondary lens is a triangular prism; the upper part of the frame of the main lens is provided with a connecting block provided with a through hole; the upper end of the auxiliary lens frame is provided with a connecting shaft which can be inserted into a through hole of the connecting block; the length of the connecting block is greater than that of the connecting shaft; the middle part of the nose support base of the student myopia control glasses is of an oval hole-shaped structure; an explosion flash lamp and a switch are arranged at the outer end head of one side of the glasses leg; the size of the auxiliary lens is larger than that of the main lens frame. The auxiliary lens is more convenient to mount, dismount and use by matching the through hole in the connecting block on the main lens with the connecting shaft on the auxiliary lens.

As another example, the chinese patent document discloses an asymmetric multi-point peripheral myopic out-of-focus spectacle lens for juvenile myopia control [ application No.: CN202121410062.1], the front surface of the lens being of spherical design and the rear surface being of aspherical or toroidal design, characterized in that: a central photopic region and a peripheral myopic defocus region on the lens; the central photopic vision area is positioned in the middle part of the lens and is an area for correcting myopia, and the central photopic vision area is asymmetrically distributed in a tilted T shape around the geometric center of the lens; the peripheral myopic out-of-focus areas of the lens are positioned at the periphery of the central photopic area. The central photopic vision area is obliquely extended to be in a T shape, so that the sudden change of the optical image in the gazing area during the short-distance reading of teenagers can be effectively reduced, and the wearing comfort is improved by reducing the astigmatism in the gazing area.

For another example, the chinese patent document discloses a myopia control glasses for solving the rear view defocus [ application No.: CN202020291956.2 discloses a solve myopia control glasses of back vision nature out of focus, including the picture frame, the upper portion both sides of picture frame are provided with articulated round pin, one side of articulated round pin is equipped with the mirror leg, the inside both sides of picture frame all are equipped with the main lens, be provided with additional lens on the picture frame in the main lens outside, the dwang is connected on the upper portion of additional lens, the adjustment mechanism of setting on the picture frame outer wall is connected to the one end of dwang. The utility model discloses a position of additional lens can be adjusted to the adjustment mechanism who sets up, through additional lens and the cooperation of main lens, can correct the out of focus of retina central authorities, improves distance vision, and when looking near, the peripheral hyperopia out of focus of retina is corrected to the additional lens, and the prevention myopia takes place or control myopia degree increases.

For another example, the chinese patent document discloses a myopia control lens in which peripheral defocus is formed by an aspheric surface [ application No.: CN201820009219.1]; the outer surface and the inner surface of the lens are formed with a central optical area for light to pass through for imaging on a central clear image area of retina of an eyeball clearly, a peripheral optical area for imaging on a peripheral defocus image area around the central clear image area is surrounded around the central optical area, the outer surface of the peripheral optical area is in an aspheric surface shape, the passing light is imaged on the peripheral defocus image area in front of the retina through the peripheral optical area, at the moment, the eye can relax ciliary muscles to reduce accommodation and flatten water crystals in order to image a distant scene on the retina, and further, the image of the peripheral optical area can fall on the retina to avoid that the ciliary muscles on the eyeball are in a tight spasm state for a long time, so that the elongation of the axis of the eye is prevented, and the aim of effectively delaying or preventing the deepening of the deviation degree of myopia is achieved.

It is obvious from the current literature retrieval that the control problem of myopia is solved by largely adopting myopic defocus. However, presbyopia problems also occur very often in children. The quality of vision of the hypermetropia is closely related to the degree of hypermetropia. Mild hyperopia can be compensated by accommodation without visual deterioration. However, hyperopia is often accompanied by varying degrees of vision loss if it is not compensated by accommodation, i.e. absolute hyperopia. Correction of general presbyopia: visual impairment caused by hyperopia is more common, and especially with age, accommodation decreases, and recessive hyperopia gradually transforms into overt hyperopia. Thus, not only the distance vision deteriorates, but also the near vision is more likely to be obstructed. It is particularly important how to control the progression of hyperopia.

Disclosure of Invention

One of the objectives of the present invention is to provide an all-focus lens for delaying the progression of hyperopia.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the all-focus lens capable of delaying the development of hyperopia comprises a lens body which is a convex lens, wherein the outer surface of the lens body is designed in a spherical or aspheric surface mode, the inner surface of the lens body is designed in a defocusing structure and is provided with a central area and a peripheral area, the central area is a stable light area with the same diopter, so that the image of objects viewed from the central area completely falls on the retina, the degree of the peripheral area changes according to a functional relation, so that the image of the objects viewed from the peripheral area completely falls behind the retina, the axis of the eye is induced, and the hyperopia of eyes is delayed.

In the above-mentioned all-focal-point lens for retarding the progression of hyperopia, the central zone is formed in the center of the inner surface of the lens body and has an area in the range of 1 to 200 square millimeters.

In the above all-focal-point lens for retarding the progression of hyperopia, the area of the inner surface of the lens body excluding the central area is a peripheral area, and the area of the peripheral area is 20 to 20000 square millimeters.

In one of the above-described all-focal lenses for retarding the progression of hyperopia, the refractive power of the central zone is matched to the wearer's refractive power for wearer refractive power correction.

In one such all-focal-point lens for retarding the progression of hyperopia, the peripheral zone has a gradient of power and ranges from-10.00D to +10.00D.

In a full focus lens for retarding the progression of hyperopia as described above, the power of the peripheral zone dsphere and the distance of this point from the geometric center of the lens satisfy the formula (I):

d perimeter = D center (1-log 35X) -n X SinX (I)

Wherein the center D is the central diopter, n is a constant and ranges from 0.01 to 10, and X is the distance between the peripheral area and the geometric center of the lens body and takes millimeter as a unit.

In an all-focal lens for retarding the progression of hyperopia as described above, the gradient of power in the peripheral zone varies linearly or non-linearly.

In the above all-focus lens for retarding the progression of hyperopia, the outer surface of the lens body is spherical, and the spherical radius of the lens body is 300-500 mm.

In one of the above-described all-focal lenses for retarding the progression of hyperopia, the gradient of the change in the peripheral zone of the inner surface of the lens body away from the central zone is 10-20 mm per mm of radius increase.

Compared with the prior art, the utility model has the advantages of: the surface adopts sphere or aspheric surface design, the interior surface type all adopts out of focus structural design, central zone is stable light zone, its diopter is unanimous, just so can all get into the clear formation of image of light of eyes on central concave through the pupil, let the wearer have a clear vision, peripheral number of degrees echelonment changes gradually, peripheral zone view thing formation of image falls on the retina rear completely, peripheral light zone number of degrees changes according to people's eye sight habit gradient, peripheral light zone stimulation to behind the retina has been increased, there is not the blind area, the induced axis of the eye is elongated, the increase of the farsighted of delaying eyes, it is better to teenagers' farsighted patient effect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another viewing angle of the present invention;

in the figure, a lens body 1, an outer surface 11, an inner surface 12, a central area 13, a peripheral area 14.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-2, the all-focus lens for delaying the progression of far vision comprises a lens body 1 in the form of a convex lens, wherein the outer surface 11 of the lens body 1 is spherical, the spherical radius R is 500 mm, the inner surface 12 of the lens body 1 is in the form of a defocusing structure, the inner surface 12 of the lens body 1 has a central area 13 and a peripheral area 14, the central area 13 is a circular area with a radius of 5 mm, the center D of diopters of the central area 13 is +3.00, and the peripheral area 14 is a circular area with a radius of 35 mm. Peripheral zone diopter D periphery is graded down, the gradient of variation varying according to D periphery = D center (1-log 35X) -n X SinX, radius X is 6 mm when n =3, diopter add is-1.51D; radius 7 mm, diopter addition-1.64D; radius 8 mm, diopter addition-1.75 diopter; radius 9 mm, diopter add-1.85 diopter; radius 10 mm, diopter increase is-1.94D. By analogy, the above data can be obtained by NIMO and lensometer tests. The degree of the peripheral light area is changed according to the vision habit gradient of human eyes, the vision image completely falls on the retina and behind the retina, the stimulation of the peripheral light area to the back of the retina is increased, no blind area exists, the elongation of the eye axis is induced, and the increase of the hyperopia of the eyes is delayed. Is suitable for any myopia, and has better effect on teenagers.

Example two

As shown in fig. 1-2, the all-focus lens for delaying the progression of far vision comprises a lens body 1 in the form of a convex lens, wherein the outer surface 11 of the lens body 1 is spherical, the spherical radius R is 500 mm, the inner surface 12 of the lens body 1 is in the form of a defocusing structure, the inner surface 12 of the lens body 1 has a central area 13 and a peripheral area 14, the central area 13 is a circular area with a radius of 4 mm, the center D of diopters of the central area 13 is +5.00, and the peripheral area is a circular area with a radius of 35 mm. Peripheral zones of graded decreasing diopter varying gradiently according to D peripheral = D center (1-log 35X) -n X SinX, radius 5 mm when n =3, diopter increasing to-2.52D; radius 6 mm, diopter addition of-2.74D; radius 7 mm, diopter addition-2.92D; radius 8 mm, diopter increase of-3.09D; radius 9 mm, diopter add-3.24D; radius 10 mm, diopter increase is-3.37 diopter.

Comparative example:

taking a spherical lens as an example, the diopter is +3.00, and the whole lens area is +3.00.

The comparative example is basically the same as the first example, the diopter of the central area is the same, but the difference is that the periphery D of the peripheral diopter takes +3.00 as an initial value, the lens has obvious light in the area beyond the radius of 5 mm, the lenses of the example 1 and the comparative example are tested, and the test method/instrument is a lensometer; the test result is as follows; the radius of the test is 6 mm, and the diopter increase is-1.51D; radius 7 mm, diopter addition-1.64D; radius 8 mm, diopter addition-1.75 diopter; radius 9 mm, diopter addition of-1.85 diopter; radius 10 mm, diopter addition is-1.94 diopters. The test results are consistent with the examples, and compared with the comparative examples, the lens of example 1 has the advantages that the peripheral area is imaged in front of the retina, gradient defocusing is generated, the comfort and the effect of lengthening the eye axis are better, and the vision habit of human eyes is met.

Therefore, the visual object imaging completely falls on the retina and behind the retina, the stimulation of the peripheral light area to the back of the retina is increased, no blind area exists, the elongation of the axis of the eye is induced, and the increase of the hyperopia of the eye is delayed. Is suitable for any myopia patients, and has better effect on teenagers.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms lens body 1, outer surface 11, inner surface 12, central area 13, peripheral area 14, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. An all-focal-point lens for delaying the development of far vision, which comprises a lens body (1) in a convex lens shape, and is characterized in that the outer surface (11) of the lens body (1) adopts a spherical or aspheric surface design, the surface type of the inner surface (12) of the lens body (1) adopts a defocusing structure design and is provided with a central area (13) and a peripheral area (14), the central area (13) is a stable light area with consistent diopter so that the visual object imaging of the central area (13) completely falls on the retina, and the power of the peripheral area (14) is changed according to a functional relation formula so that the visual object imaging of the peripheral area (14) completely falls behind the retina.

2. An all-focal lens for retarding the progression of hyperopia according to claim 1, characterized in that the central zone (13) is formed centrally on the inner surface (12) of the lens body (1) and the central zone (13) has an area in the range of 1-200 mm.

3. An all-in-focus lens for retarding the progression of hyperopia according to claim 1, characterized in that the area of the inner surface (12) of the lens body (1) excluding the central area (13) is the peripheral area (14), and that the area of the peripheral area (14) is 20-20000 square millimetres.

4. An all-focus lens for retarding the progression of hyperopia according to claim 1, characterized in that the optical power of the central zone (13) corresponds to the optical power of the wearer for the purpose of wearer optical power correction.

5. An all-in-focus lens for retarding the progression of hyperopia according to claim 1, characterized in that the peripheral zone (14) has a gradient of power in the range-10.00D to +10.00D.

6. An all-focal lens for slowing the progression of hyperopia according to claim 5, characterized in that the power dskir of the peripheral zone (14) and the distance of this point from the geometric center of the lens satisfy the formula (I):

d perimeter = D center (1-log 35X) -n X SinX (I)

Wherein, the center D is the central diopter, n is a constant and ranges from 0.01 to 10, X is the distance between the peripheral area (14) and the geometric center of the lens body (1) and takes millimeter as a unit.

7. An all-focal lens for slowing the progression of hyperopia according to claim 1, characterised in that the gradient of power in the peripheral zone (14) varies linearly or non-linearly.

8. An all-in-focus lens for retarding the progression of hyperopia according to claim 1, characterized in that the outer surface (11) of the lens body (1) is spherical and the spherical radius of the lens body (1) is 300-500 mm.

9. An all-focal lens for slowing the progression of hyperopia according to claim 1, characterized in that the gradient of the progression of the peripheral zone (14) of the inner surface (12) of the lens body (1) away from the central zone (13) is 10-20 mm per mm of radius.