CN119126409A

CN119126409A - High-visibility point-diffusion multi-point defocus lenses and glasses with both long-sightedness and short-sightedness protection

Info

Publication number: CN119126409A
Application number: CN202411476639.7A
Authority: CN
Inventors: 程河清; 周杨; 俞灿强
Original assignee: Xiamen Tanuo Optical Technology Co ltd
Current assignee: Xiamen Tanuo Optical Technology Co ltd
Priority date: 2024-10-22
Filing date: 2024-10-22
Publication date: 2024-12-13

Abstract

The present invention discloses a high-visibility point diffusion multi-point defocus lens and glasses with both farsightedness and myopia protection, including a lens body, on which a central visual area, a point diffusion area, a defocused light-gathering area and a peripheral visual area are provided, and the adjacent areas are transitioned in an arc; the central visual area is located at the optical center of the lens body, and is used to enable the wearer's eyes to see objects clearly at the center position; the point diffusion area is located in an area outside the central visual area, and is located in the middle and upper position of the lens body, accounting for 40% to 60% of the surface area of the lens body; the point diffusion area is composed of a number of regularly arranged diffusion units; the defocused light-gathering area is distributed in a fan-shaped ring shape on the periphery of the central visual area; the peripheral visual area is distributed in a fan-shaped ring shape on the periphery of the defocused light-gathering area, and covers the edge area of the lens body. Through the reasonable allocation of each area on the lens, the phenomenon of hyperopia defocus is effectively avoided, and at the same time, the stimulation of high brightness, high contrast, and brightly colored light to the eyeball is weakened, the growth rate of the eye axis is slowed down, the myopia degree is protected from deepening, and effective prevention and control of myopia development is achieved.

Description

High-visibility point-diffusion multi-point defocusing lens and glasses with far-near vision protection function

Technical Field

The invention relates to the technical field of optical lenses, in particular to a high-visibility point-diffusion multi-point defocusing lens and glasses with far-near vision protection.

Background

Many underage myopes still experience a rapid increase in myopic power after wearing myopic correcting glasses. This is because the posterior surface morphology of a myopic eye changes from spherical to ellipsoidal, and does not match well with the spherical imaging surface, resulting in different defocus amounts for the central and peripheral fields. Conventional near vision lenses take into account the problem of moving the imaging plane back as a whole, ignoring the imaging lag of the peripheral field of view, i.e., hyperopia out of focus. For adults whose eyeballs have not developed, such hyperopic defocus stimulus accelerates the elongation of the eye axis, which further deepens myopia.

In addition, in daily life, minors frequently contact with high-brightness, high-contrast and bright-colored electronic screens, whether viewing projection screens and electronic display screens in classrooms or contacting various electronic signboards, billboards and information signs in outdoor environments, most of the light rays of the light sources enter through the upper parts of eyeballs, and referring to fig. 1, strong stimulus is caused to the eyeballs, so that the growth of the ocular axes is further promoted, and the deterioration of myopia is accelerated. In addition, in outdoor sunny weather, strong sunlight can enter through the upper part of the eyeball, and potential threat is formed to the retina.

Disclosure of Invention

The invention aims to provide a high-visibility point-diffusion multi-point defocusing lens and glasses with far-near vision protection, which effectively avoid the phenomenon of far-vision defocusing by reasonably distributing different areas, weaken the stimulus of high-brightness, high-contrast and bright-color light to eyeballs, slow down the growth speed of eye axes, protect the myopia degree from deepening and realize effective prevention and control on the myopia development.

The high-visibility point-diffusion multi-point defocusing lens with far-near vision protection comprises a lens body, wherein a central visible area, a point diffusion area, a defocusing and condensing area and a peripheral visible area are arranged on the lens body, and arc transition is formed between adjacent areas;

The point diffusion area is positioned in an area outside the central visible area and positioned at an upper position in the middle of the lens body and accounts for 40% -60% of the surface area of the lens body, and consists of a plurality of diffusion units which are regularly arranged;

the peripheral visual area is distributed on the periphery of the defocused light-gathering area in a fan-shaped mode and covers the edge area of the lens body except the central visual area, the point diffusion area and the defocused light-gathering area.

Further, the distance between adjacent diffusion units is 0.2-0.6 mm, and the diameter of each diffusion unit is 0.1-0.45 mm.

Further, the diffusion unit is a circular groove with frosted texture.

Further, the central visual zone and the peripheral visual zone are both zones having myopic correction power.

Further, the center visual area is circular or regular hexagon, the diameter of the center visual area of the circle center is 9.9mm, and the diameter of the inscribed circle of the center visual area of the regular hexagon is 9.9mm.

Further, the inner diameter of the defocused light focusing region is 9.9mm, and the outer diameter is 46.16mm.

Further, the defocused light focusing area is composed of a plurality of circular microlenses which are regularly arranged.

Further, the microlenses on the defocused light-gathering area are distributed in a ring-shaped manner, and the number of the ring-shaped bands is 13.

Further, the diameter range of the lens body is 60-85 mm, and the curvature range of the lens body is 0-600 degrees.

The invention also provides high-visibility point-diffusion multi-point defocusing glasses with far-near vision protection, which comprise the lenses.

After the scheme is adopted, the beneficial effects of the invention are as follows:

The point-diffusion multi-point defocusing lens realizes effective management of far-vision rays by reasonably distributing different areas, reduces the stimulus of high-brightness, high-contrast and colorful rays to eyeballs, thereby slowing down the growth of eye axes and effectively controlling the development of myopia.

Wherein the central viewing zone serves as a zone having myopic correction power, ensuring that the wearer can clearly see the object directly in front. The defocusing light focusing area provides myopia defocusing imaging for a wearer, so that the stimulus of hyperopic defocusing to eyeballs possibly generated by the traditional myopia lens is effectively avoided, and the risks of eye axis growth and myopia degree deepening caused by hyperopic defocusing are reduced.

The point diffusion area is arranged at the position above the lens body, and particularly, the light entering the eyeball from the upper part of the eye is effectively weakened, the brightness, contrast and color vividness of the light are reduced, the stimulation to the underdeveloped complete eyeball of the minors is effectively avoided, and the increase of the ocular axis and the deepening of the myopia degree are slowed down. The point diffusion area is designed to account for 40% -60% of the surface area of the lens body, and the proportion ensures that a wearer has a sufficient visual range, further slows down the growth of the eye axis and effectively controls the development of myopia.

The peripheral visual zone is also provided with myopia correction degrees, a larger visual zone range is provided for a wearer, the visual field is widened, the comfort is enhanced, the peripheral objects can be clearly seen when the wearer rotates the head or eyeballs, and the daily activity requirement is met.

Drawings

FIG. 1 is a schematic view of light entering an eyeball from above;

FIG. 2 is a schematic view of a point-diffusion multi-point defocus lens surface structure according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a schematic view of a surface structure of a two-point diffusion multi-point defocus lens according to an embodiment of the present invention.

Description of the reference numerals:

1. The lens comprises a lens body, a central visual area, a defocused light gathering area, a microlens, a point diffusion area, a diffusion unit and a peripheral visual area, wherein the lens body comprises a lens body, a central visual area, a defocused light gathering area, a microlens, a point diffusion area, a diffusion unit and a peripheral visual area.

Detailed Description

Embodiment one:

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

The invention provides a high-visibility point-diffusion multi-point out-of-focus lens with far and near vision protection, which is shown in fig. 2 to 4, and comprises a lens body 1, wherein a central visual area 2, a point diffusion area 4, an out-of-focus light gathering area 3 and a peripheral visual area 5 are arranged on the lens body 1, and the adjacent areas form smooth arc transition, so that the visual comfort and seamless visual transition during wearing are ensured.

The lens body 1 is made of PC or other resin materials, and the materials are light and durable, have good optical performance and shock resistance, and ensure the safety and reliability of the lens. The diameter range of the lens body 1 is 60-85 mm, the curvature range is 0-600 degrees, the personalized requirements of different wearers can be met, and the best vision correction effect is ensured.

The central visual zone 2 is located at the optical center of the lens body 1 and is a zone with myopic correcting power. The diopter of the central visual area 2 is the same as the diopter required by correcting the vision, so that an object image at the central vision can be projected on the retina, the effects of correcting the central retina defocus and correcting the central vision are achieved, and a wearer can clearly see objects. The center visual area 2 is round or regular hexagon, the diameter phi 1 of the center visual area 2 is 9.9mm, and the diameter of inscribed circle of the regular hexagon center visual area 2 is 9.9mm

The defocused light focusing area 3 is arranged on the periphery of the central visual area 2, and is particularly distributed in a sector ring shape in the area outside the central visual area 2 and the point diffusion area 4. The defocused light-gathering area 3 is composed of a plurality of circular microlenses 31 which are regularly arranged and are distributed in an annular-belt-shaped array. The micro lenses 31 can lead the peripheral visual field imaging on the premise of not interfering with normal vision, namely, the peripheral visual field imaging is formed in front of retina, so that myopia defocus is formed, the imaging lead can effectively slow down the stretching frequency of the eye axis, the hyperopic defocus possibly generated by the traditional myopia lens is avoided, the bad stimulus to the eyeball is avoided, and further, the myopia degree increase caused by the eye axis growth is prevented.

In the embodiment, for the lens body 1 with the diameter of 60-85 mm, the area range of the defocused light focusing area 3 on the lens body 1 is that the inner diameter of the defocused light focusing area 3 is equal to the diameter phi 1 of the central visual area 2 and is 9.9mm, the outer diameter phi 2 is 46.16mm, and enough positions are reserved for the central visual area 2 and the peripheral visual area 5 so as to ensure sufficient visual range. The defocus amount of the defocus light-condensing region 3 is set in the range of 400-500D, and it is necessary to customize the most appropriate defocus amount according to the specific situation of the patient because there are differences in eyeball shape, refractive state, and visual demand of different people. Further, in the present embodiment, the number of zones is 13, and referring to fig. 3, the spacing distance L1 between adjacent zones is 1.5877mm, which is approximately equivalent to the straight line distance between the centers of the adjacent microlenses 31, the microlenses 31 are arranged along a regular hexagonal track, and the diameter of a single microlens 31 is d1=1.1 mm.

The point spread region 4 is located at the outer periphery of the central viewing zone 2 and covers only the upper region of the lens body 1. The brightness, contrast, vividness and the like of the light entering from above the eyes through the point diffusion region 4 can be effectively weakened, so that the eye is prevented from being stimulated, and the eye axis is prevented from being lengthened. In addition, the area of the point diffusion region 4 is controlled within the range of 40-60% of the surface area of the lens body 1, in this embodiment, as shown in fig. 2, the area of the point diffusion region 4 is 40% of the surface area of the lens body 1, and compared with the scheme of completely distributing the point diffusion region 4 at the periphery of the multi-point defocused light-gathering region 3, the scheme of the application distributes the distribution ratio of the visible region and the point diffusion region 4 more reasonably, so that sufficient visible range can be ensured while weakening the brightness of light and the like, thereby further slowing down the growth of the eye axis and controlling the development of myopia.

As shown in fig. 4, the point diffusion area 4 is composed of a plurality of diffusion units 41 arranged regularly, and the diffusion units 41 are in a circular groove structure with frosted texture, so that the scattering of light on the surface of the point diffusion area 4 can be effectively reduced, and the visual experience of a wearer is improved. The distance L2 between the adjacent diffusion units 41 is controlled to be 0.2-0.6 mm, so that the continuity of the frosting effect is ensured, and meanwhile, unnecessary interference to the line of sight caused by too dense diffusion units 41 is avoided. The diameter D2 of the diffusion unit 41 is controlled to be 0.1-0.45 mm.

The point diffusion unit 41 is directly injection molded on the lens body 1 through an injection molding process, which ensures seamless connection between the point diffusion region 4 and the lens body 1 without additional processing steps.

The peripheral visual area 5 is located in the defocused light focusing area 3 and covers the edge area of the lower position of the lens body 1. The peripheral vision zone 5 is the same as the central vision zone 2 and is also the zone with myopic correcting power. If the edge of the lens body 1 is covered by the point diffusion region 4 or the defocus light collecting region 3, the visual area with correction effect is greatly reduced, and the visual function of the lens is affected. Therefore, the peripheral visual area 5 is arranged at the edge of the lower area of the lens body 1, so that a larger area of visual area range can be provided for the wearer, the relative definition of peripheral vision is ensured, and the visual comfort and adaptability are improved. This is critical to the wearer's vision requirements for different distances and angles in daily life.

Embodiment two:

in this embodiment, the area of the point spread region 4 is 60% of the surface area of the lens body 1. As shown in FIG. 5. Compared with the first embodiment, the lens body 1 of the present embodiment has slightly improved attenuation effect on the upper light due to the expansion of the area of the point diffusion region 4, and the definition of the peripheral vision is slightly reduced.

Experimental example:

in order to verify the prevention and control effect of the point-diffusion multi-point defocus lens of the invention on myopia development of minors, the following experiment was performed. The experiment randomly selected 60 volunteers with myopia, and the age groups of these volunteers covered 7 to 17 years old, ensuring the universality and coverage of the experimental samples.

First, the volunteers were subjected to first refraction, and the refraction results were recorded, and then each volunteer was equipped with the glasses of the point-spread multi-point defocus lens of the present invention according to the refraction results. We again performed optometry on volunteers at three months, half year and one year time points, respectively, and recorded their optometry data in detail, the results being shown in table 1.

Table description:

1. the numbers 1 to 60 represent different volunteers.

2. The index superscript "×" indicates that the degree increased within 1 year, and the index "#" indicates that the degree decreased within 1 year. The unlabeled symbol indicates that the degree has not changed within 1 year.

3. (R) for the right eye, (L) for the left eye, S (SPH) for sphere power (i.e. power of spectacles), S-for myopia, C (CYL) for cylinder power (i.e. power of astigmatism), A (AX) for axis of astigmatism.

Table 1 optometry data table

The optometric data of table 1 demonstrates the effect of the point-spread multi-point defocus lens of the invention on myopia progression in 60 volunteers over a 1 year period. The optometry results show that the myopia degree of 8 volunteers with serial numbers of 3, 10, 12, 32, 34, 43, 55 and 47 (about 13.3%) is deepened and the myopia degree of 9 volunteers with serial numbers of 2, 5, 14, 16, 18, 25, 31, 44 and 51 (about 15%) is lowered in the time span of 1 year, which shows that the point-diffusion multi-point defocus lens can well protect and relax eyes to a certain extent, and the pseudomyopia elimination can well protect eyes, relieve eye fatigue and has positive elimination effect on pseudomyopia. While the remaining 43 volunteers (about 71.7%) had their myopia degree remained essentially unchanged during the year, indicating that the lenses of the invention had good myopia degree enhancing prevention effect.

For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. Meanwhile, the directions of up, down, front, back, left, right, etc. in this embodiment are merely references to one direction, and do not represent directions in actual use.

The above embodiments are only preferred embodiments of the present invention, and are not limited to the present invention, and all equivalent changes made according to the design key of the present invention fall within the protection scope of the present invention.

Claims

1. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection, characterized in that: it comprises a lens body, on which a central visual area, a point-diffusion area, a defocused light-collecting area and a peripheral visual area are provided, and adjacent areas are transitioned in an arc;

The central visual area is located at the optical center of the lens body, and is used to enable the wearer to see objects clearly at the center position;

The point diffusion area is located outside the central visual area and in the upper middle part of the lens body, accounting for 40% to 60% of the surface area of the lens body; the point diffusion area is composed of a number of regularly arranged diffusion units;

The defocused light-collecting area is distributed in a fan-shaped ring shape at the periphery of the central visible area; the peripheral visible area is distributed in a fan-shaped ring shape at the periphery of the defocused light-collecting area, and covers the edge area of the lens body except the central visible area, the point diffusion area, and the defocused light-collecting area.

2. A high-visibility point diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as described in claim 1, characterized in that the distance between adjacent diffusion units in the point diffusion area ranges from 0.2 to 0.6 mm, and the diameter of each diffusion unit ranges from 0.1 to 0.45 mm.

3. A high-visibility point diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as described in claim 2, characterized in that: the diffusion unit is a circular groove with a frosted texture.

4. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as claimed in claim 1, characterized in that: the central visual area and the peripheral visual area are both areas with myopia correction degrees.

5. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as claimed in claim 1, characterized in that: the central visible area is circular or regular hexagonal, the diameter of the central visible area of the circle is 9.9 mm, and the diameter of the inscribed circle of the central visible area of the regular hexagon is 9.9 mm.

6. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as claimed in claim 5, characterized in that the inner diameter of the defocused focusing area is 9.9 mm and the outer diameter is 46.16 mm.

7. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as claimed in claim 1, characterized in that the defocused light-collecting area is composed of a plurality of regularly arranged circular micro-lenses.

8. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and myopia protection as claimed in claim 1, characterized in that the microlenses on the defocused focusing area are distributed in a ring-shaped pattern, and the number of the ring-shaped patterns is 13.

9. A high-visibility point-diffusion multi-point defocus lens with both farsightedness and nearsightedness protection as claimed in claim 1, characterized in that: the diameter of the lens body ranges from 60 to 85 mm, and the curvature of the lens body ranges from 0 to 600°.

10. A high-visibility point-diffusion multi-point defocus glasses with both long-sightedness and short-sightedness protection, characterized in that it comprises the lens as described in any one of claims 1 to 9.