CN215526264U

CN215526264U - Multi-point myopia out-of-focus progressive spectacle lens for teenagers

Info

Publication number: CN215526264U
Application number: CN202120987636.5U
Authority: CN
Inventors: 李林峰; 任建锋; 黄启泰; 李春琦; 颜蒙; 王毅; 倪颖
Original assignee: Suzhou University
Current assignee: Suzhou Mingshi Optical Technology Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-01-14
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a multi-point myopia out-of-focus progressive spectacle lens for teenagers, which comprises a first refraction area and a second refraction area and is characterized in that: the second dioptric region is not formed in a photopic region composed of a first photopic region centered on the center of the distance zone, a second photopic region centered on the center of the near zone, and a transition photopic region connecting the first and second photopic regions. The first bright visual area is oval, the long axis of the oval is parallel to the horizontal visual line direction of the lens when in use, the long axis of the oval is 12-14 mm, the short axis of the oval is 9-10 mm, the second bright visual area is circular with the diameter of 9-10 mm, the transitional bright visual area is a strip-shaped area taking the connecting line of the center of the far zone and the center of the near zone as the central axis, and the width of the transitional bright visual area is 9-10 mm. The utility model provides the inhibition of ametropia development, is suitable for the condition that the number of transverse scenes is large when teenagers use eyes, and has comfortable visual perception.

Description

Multi-point myopia out-of-focus progressive spectacle lens for teenagers

Technical Field

The utility model relates to an eyeglass, in particular to a multi-point myopia and defocusing progressive eyeglass, which is particularly suitable for teenagers.

Background

Human eyes are crucial for human information acquisition, and statistically more than 80% of human information acquisition originates from the eyes. At present, various electronic screens are flooded in social life, which emit light with different intensities, and the daily use time of human eyes is longer and longer, so that the human eyes continuously generate ametropia, and the ametropia is increasing. According to incomplete statistics, over 80% of college students have refractive errors above 200 degrees.

On the basis of the refractive correction, functional spectacle lenses have emerged which have the function of inhibiting the ametropia of the human eye. For example, a lens having a concentric fresnel multifocal shape is provided, and a plurality of dioptric regions are concentrically arranged in the lens, and this lens has a function of focusing an image on the retina of the spectacles, and if a patient views an object using the lens for inhibiting myopia, the image of the object is formed on the retina, and an image is formed at a point in front of the retina, so that an effect of inhibiting the progression of myopia can be obtained by two images during visual observation.

Chinese patent CN 104678572B discloses an ophthalmic lens in which several small area lenses with a circular shape and a diameter of about 0.8mm to 2mm are arranged in different areas to form a second dioptric area. The progression of myopia is suppressed by an image obtained in front of the retina by the second dioptric region while visually distinguishing an image of the object formed by the first refractive power. Meanwhile, the second dioptric region is not formed in a circular region having a radius of 2.5mm to 10.0mm with the optical center of the spectacle lens as the center, in order to maintain sufficient visibility and obtain a good wearing feeling. In addition, there are other microstructures that are used in the field of eyewear manufacture to form the second dioptric region.

For progressive ophthalmic lenses, there are a distance zone center and a near zone center, respectively, at different positions of the lens. When attempting to apply the above-described spectacle lens structure to a progressive spectacle lens, a general improvement consideration is that the second dioptric region is not formed in a region centered on the distance zone center and the near zone center, respectively, of the spectacle lens.

However, when applied to the manufacture of ophthalmic lenses for adolescents, in particular progressive ophthalmic lenses for adolescents, the above structure is found to give extreme discomfort to the wearer. The inventors have studied this and found that the wearing experience of teenagers is greatly different from that of adults, thereby causing a great deal of wearing discomfort of the teenager progressive lens. The main reasons are as follows: (1) the areas of use of the eyes of teenagers are different. In the process of learning and playing of teenagers, a large number of visual scenes are transverse scenes. Eyes are less used in a vertical scene. Colloquially, teenagers look at something mostly and scan left and right. (2) The progressive addition diopter number of teenagers is lower. The far vision area is bigger and the near vision area is smaller; (3) adolescents are more likely to use only the remote and transition zones.

Therefore, there is a need for further structural improvements of progressive ophthalmic lenses for adolescents to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a multipoint myopia out-of-focus progressive spectacle lens for teenagers, which has the function of inhibiting the continuous development of ametropia and provides better comfort for a wearer.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a multi-point myopic out-of-focus progressive ophthalmic lens for adolescents, comprising a first refractive area having a first refractive power based on correcting ametropia of the eye; and a second dioptric region having a refractive power different from the first refractive power and having a function of imaging an object at a position other than the retina of the eye to suppress progression of ametropia of the eye, the second dioptric region not being formed in a photopic region composed of a first photopic region centered on the center of a distance zone, a second photopic region centered on the center of a near zone, and a transition photopic region connecting the first and second photopic regions.

In the technical scheme, the first photopic vision area is oval, the long axis of the oval is parallel to the horizontal sight direction of the lens when in use, the long axis of the oval is 12-14 mm, and the short axis of the oval is 9-10 mm.

In the technical scheme, the second bright visual area is circular with the diameter of 9-10 mm.

The central point of the second photopic vision area is 2-4 mm from the first photopic vision central point and 8-11 mm from the first photopic vision central point in the vertical direction according to the matching position of the second photopic vision point of the teenagers.

In the technical scheme, the transitional bright visual area is a strip-shaped area taking a connecting line between the center of the far area and the center of the near area as a central axis, and the width of the transitional bright visual area is 9-10 mm.

In the above technical solution, the sub-region images the object at a position other than the retina of the eye to suppress the progression of ametropia of the eye, and the structure of the sub-region is selected from a convex lens, a concave lens, and a binary optical element.

In a preferred technical scheme, the second refraction area is composed of a plurality of distributed circular sub-areas, and the diameter of each sub-area is 0.8 mm-6 mm.

Alternatively, each sub-zone has a diameter of 0.8mm to 2mm, and each sub-zone has a convex or concave shape toward the object side with respect to the surface shape of the first dioptric zone.

Alternatively, each sub-region has a diameter of 2mm to 6mm, and each sub-region has a plurality of annular etched grooves to form a binary structure. The width of the etching groove is 30-100 micrometers, and the distribution and the depth of the etching groove enable the sub-area to form a micro-lens structure and provide second refractive power.

In the above technical solution, within the range of the distribution of the sub-regions, the first dioptric region and the second dioptric region form a mixed region. Wherein the area of the second dioptric region consisting of the sub-regions is 20 to 60 percent of the total area of the mixed region.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model forms a photopic vision area, wherein the first photopic vision area taking the center of the far-use area as the center is in an ellipse shape, thereby providing the situation that ametropia is inhibited from developing, being suitable for the situation that a plurality of transverse scenes are used by teenagers, and ensuring that the vision feeling is comfortable during left-right scanning.

Drawings

FIG. 1 is a schematic illustration of a bright field distribution according to an embodiment of the present invention;

fig. 2 is a schematic view of a lens in an embodiment.

Wherein: 1. a first bright zone; 2. a second bright field; 3. a transitional bright field; 4. a long axis; 5. a minor axis; 6. a remote zone center; 7. a near zone center; 8. a secondary region.

Detailed Description

The utility model is further described with reference to the following figures and examples:

the first embodiment is as follows: a multi-point myopic out-of-focus progressive ophthalmic lens for adolescents, comprising a first refractive area having a first refractive power based on correcting ametropia of an eye; and a second dioptric region having a refractive power different from the first refractive power and having a function of imaging an object on a position other than a retina of the eye to suppress development of ametropia of the eye. The second dioptric region is not formed in a photopic region.

Fig. 1 is a schematic diagram showing the distribution of the photopic vision region. In the figure, the bright visual area consists of a first bright visual area 1 taking a far zone center 6 as a center, a second bright visual area 2 taking a near zone center 7 as a center and a transitional bright visual area 3 connecting the first bright visual area 1 and the second bright visual area 2, wherein the first bright visual area 1 is in an oval shape, a long axis 4 of the oval is parallel to the horizontal visual line direction of the lens in use, the long axis 4 of the oval is 12-14 mm, a short axis 5 of the oval is 9-10 mm, the second bright visual area 2 is in a round shape with the diameter of 9-10 mm, the transitional bright visual area 3 is a long strip-shaped area taking a connecting line of the far zone center 6 and the near zone center 7 as a central axis, and the width of the transitional bright visual area is 9-10 mm.

Referring to fig. 2, in a portion outside the photopic region, a plurality of sub-regions 8 are distributed, and the second dioptric region is constituted by these sub-regions 8. The structure and the distribution mode of the sub-region can adopt any structure and distribution mode in the prior art, and all belong to the implementation scheme in the application as long as the sub-region is not distributed in the bright visual region.

Claims

1. A multi-point myopic out-of-focus progressive ophthalmic lens for adolescents, comprising a first refractive area having a first refractive power based on correcting ametropia of the eye; and a second dioptric region having a refractive power different from the first refractive power and having a function of imaging an object on a position other than a retina of the eye to suppress progression of ametropia of the eye, characterized in that: the second dioptric region is not formed in a photopic region composed of a first photopic region centered on a far zone center, a second photopic region centered on a near zone center, and a transition photopic region connecting the first and second photopic regions.

2. The progressive ophthalmic multi-point myopic defocus lens for teenagers as claimed in claim 1, wherein: the first photopic vision area is oval, the long axis of the oval is parallel to the horizontal sight direction of the lens when in use, the long axis of the oval is 12-14 mm, and the short axis of the oval is 9-10 mm.

3. The progressive ophthalmic multi-point myopic defocus lens for teenagers as claimed in claim 1, wherein: the second bright visual area is circular with the diameter of 9-10 mm.

4. The progressive ophthalmic multi-point myopic defocus lens for teenagers as claimed in claim 1, wherein: the central point of the second photopic vision area is 2-4 mm from the first photopic vision central point and 8-11 mm from the first photopic vision central point in the vertical direction according to the matching position of the second photopic vision point of the teenagers.

5. The progressive ophthalmic multi-point myopic defocus lens for teenagers as claimed in claim 2, wherein: the transition bright visual area is a strip-shaped area taking a connecting line between the center of the far zone and the center of the near zone as a central axis, and the width of the transition bright visual area is 9-10 mm.