CN217425855U - Spectacle lens for adjusting growth trend of eye axis of teenager - Google Patents

Abstract

The utility model provides a spectacle lens for adjusting the growth trend of the eye axis of teenagers, which comprises a first dioptric area for providing a first diopter for correcting vision ametropia; a second dioptric region focusing light at a position other than the retina and providing one or more second dioptric forces different from the first dioptric force, wherein the second dioptric region is provided with a plurality of microlenses connected to each other; and a third dioptric region providing one or more third dioptres different from the second dioptres for increasing defocus of the eyeglass lens. The spectacle lens can effectively regulate the growth trend of the axis of the eye of teenagers, thereby inhibiting the development of the ametropia of the eye.

Description

Spectacle lens for adjusting growth trend of eye axis of teenager

Technical Field

The utility model relates to a resin lens technical field, in particular to a lens for adjusting teenagers' eye axis growth trend.

Background

Myopia is a global social problem and a medical problem, and the disease rate of myopia of teenagers in China shows the trend of low age and high degree, and the disease rate increases year by year. The occurrence and development of myopia of teenagers are mainly caused by hyperopic defocus at the periphery of retina. The current effective myopia correction methods include drug control, frame glasses, corneal contact lenses, excimer laser corneal refractive surgery and the like.

From the current market feedback, framed glasses are also the primary corrective modality for the vast majority of myopic people and the first choice for controlling myopia progression, where peripheral defocus framed glasses are a more effective and progressively accepted class of lenses by consumers to slow down axial elongation by reducing the principle of retinal peripheral hyperopic defocus. Specifically, the myopia degree on the lens is gradually reduced from the top to the bottom, so that the wearer can respectively adopt different degrees when seeing a long-distance object and a short-distance object, and the purposes of relaxing and adjusting eyes are achieved. With normal frame glasses (single vision lenses) there is a hyperopic defocus around the retina, i.e. the peripheral focus falls behind the retina. The peripheral defocusing lens can change the far-vision defocusing at the periphery of the retina into near-vision defocusing, thereby inhibiting the increase of the axis of the eye and achieving the purpose of controlling the degree.

Through patent search, there are patents on peripheral out-of-focus lenses, such as:

patent document CN102472899A provides a contact lens that slows the progression of myopia or hyperopia in a human patient, the contact lens having two or more refractive powers, wherein a first refractive power provides clear visual acuity and a second refractive power provides a defocused retinal image to the human patient. Patent document CN111897141A provides a peripheral out-of-focus lens and a frame glasses, the peripheral out-of-focus lens includes a central optical area, an annular out-of-focus area is provided outside the central optical area, and the out-of-focus amount of the out-of-focus area varies in the annular direction. The patent document CN113272720A proposes an eyeglass lens comprising: a first region that causes light rays incident on an object side surface of the lens to exit from an eyeball side surface of the lens and converge at a predetermined position a on a retina of a wearer; a plurality of second regions configured to converge light rays at a position B on the object side or a position C on the far side with respect to the position a, if the second regions converge light rays at the position B, the diopter power error in the meridional direction and the diopter power error in the sagittal direction having values that cause light rays to converge in a direction extending from the vicinity of the position a toward the position B, or if the second regions converge light rays at the position C, the diopter power error in the meridional direction and the diopter power error in the sagittal direction having values that cause light rays to converge in a direction extending from the vicinity of the position a toward the position C, wherein the peripheral region is a radial range of 4.5 mm to 25 mm from the lens center. Patent document CN113741060A provides a peripheral myopic defocus lens, which is characterized in that a peripheral image disturbance area is provided at the periphery of a central optical area, and an image disturbance portion and a transparent gap portion between different portions of the image disturbance portion are formed in the peripheral image disturbance area.

The defocusing lens adopts R value change or micro-lens design to realize defocusing. Under the condition of realizing defocusing by adopting the change of the R value, in order to enable the central area to obtain clear vision, the defocusing amount design of the peripheral area is limited, so that the effect of inhibiting the growth of the eye axis is difficult to achieve. Under the condition of realizing defocusing by adopting the micro-lens design, the diopter of the micro-lens can be increased by 2.00-8.00D compared with the diopter on the surface, so that the defect of peripheral defocusing design is overcome, however, because the difference between the diopter on the surface and the diopter of the micro-lens is too large, image jump is easy to occur, and discomfort such as light-headedness and the like is caused to a wearer.

There is therefore a need for a peripheral out-of-focus lens that overcomes the above-mentioned disadvantages.

Disclosure of Invention

The utility model overcomes the defect of the current peripheral out-of-focus lens, provides a wear comfortable and can effectively adjust the lens of teenagers' eye axis growth trend.

In order to achieve the purpose of the invention, the technical scheme provided by the utility model is as follows:

an ophthalmic lens for accommodating juvenile ocular axial growth tendencies, comprising a first refractive zone providing a first refractive power necessary to correct vision; a second dioptric region focusing light at a position other than the retina and providing one or more second dioptric forces different from the first dioptric force, wherein the second dioptric region is provided with a plurality of microlenses connected to each other; a third dioptric region providing one or more third dioptric power different from the second dioptric power for increasing defocus of the ophthalmic lens.

In the present invention, the microlenses and the adjacent microlenses are connected to each other by connecting columns, connecting balls, or a combination of both.

The utility model discloses in, the diopter of microlens with right microlens plays the spliced pole of connecting action or connects the diopter of ball different, wherein, the diopter relation between microlens and spliced pole, connection ball or the combination of the two is for satisfying:

where a and b are constants and x is the distance of the microlens from the center of the optic in millimeters (mm).

In the present invention, the microlenses are arranged in a ring shape.

In the present invention, the microlenses located in different annular regions have different diopters, and the absolute value of the diopter of the microlenses increases with increasing distance from the lens center.

In the present invention, the diopter of the second diopter region is obtained by increasing the positive diopter or increasing the negative diopter on the basis of the first diopter.

The utility model discloses in, the diopter of second dioptric area with the difference of first diopter is 1.00D ~ 9.00D.

In the present invention, the first diopter is a diopter of a spherical or aspherical lens.

In the present invention, the raw material of the spectacle lens is a thermosetting resin, wherein the refractive index and abbe number of the thermosetting resin satisfy at least one of the following conditions: (a) the refractive index is 1.67, and the Abbe number is more than or equal to 30; (b) the refractive index is 1.60, and the Abbe number is more than or equal to 40; (c) the refractive index is 1.56, and the Abbe number is more than or equal to 38; (d) the refractive index is 1.50, and the Abbe number is more than or equal to 56.

In the present invention, the raw material of the spectacle lens is a thermoplastic resin, wherein the transmittance of the thermoplastic resin is not less than 90%.

According to the utility model discloses a lens is connected through adopting connecting ball or spliced pole between the microlens, has solved the image jump problem between the different diopters, and teenagers 'axis of eye growth trend can effectively be adjusted to this lens simultaneously to restrain eyes ametropia's development.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, the invention can also be applied to other similar scenarios without inventive effort according to these drawings. Unless otherwise apparent from the context of language or otherwise indicated, like reference numerals in the figures refer to like structures and operations.

Fig. 1 is a plan view and a partial enlarged view of an ophthalmic lens according to some embodiments of the invention.

Fig. 2 is a cross-sectional view of a-a section of the spectacle lens shown in fig. 1.

Fig. 3 is a plan view of an ophthalmic lens according to further embodiments of the present invention.

Fig. 4 is a plan view of an ophthalmic lens according to further embodiments of the present invention.

Detailed Description

Hereinafter, the present invention will be described in detail based on exemplary embodiments, but the present invention is not limited to these embodiments. The present invention is embodied in the following forms and should not be construed as limited to the exemplary embodiments set forth herein. Accordingly, the detailed description and examples will convey the scope of the invention to those skilled in the art, and are to be construed as being within the scope of the invention.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The utility model provides a lens has the function of adjusting teenagers' eye axis growth trend. In some embodiments, the front and back surfaces of the ophthalmic lens are spherical or aspherical. The front surface and the back surface of the lens are both designed to be aspheric surfaces, the spherical lens has the defect of edge optical performance, so that the object is seen obliquely from the edge to generate a fuzzy feeling when the eyeball is rotated, and the aspheric lens can effectively solve the problem and make the whole vision clearer. In addition, the aspheric lens can obviously improve the design variable of the lens surface, and the lens is easier to optimize.

According to some embodiments of the invention, the lens raw material applied to the spectacle lenses of the invention is a resin material, such as a thermosetting resin, a thermoplastic resin. In some embodiments, the refractive index of the lens raw material is between 1.0 and 2.0, and the abbe number is greater than or equal to 20, and preferably, the refractive index and the abbe number of the thermosetting resin lens satisfy the following conditions: (a) the refractive index is 1.67, and the Abbe number is more than or equal to 30; (b) the refractive index is 1.60, and the Abbe number is more than or equal to 40; (c) the refractive index is 1.56, and the Abbe number is more than or equal to 38; (d) the refractive index is 1.50, and the Abbe number is more than or equal to 56. In some embodiments, the transmittance of the thermoplastic resin lens is more than or equal to 85%, preferably 95%, which can meet the use requirements of myopes.

Fig. 1 shows a plan view and a partial enlarged view of an ophthalmic lens 100, which ophthalmic lens 100 may comprise a first refractive area 110 and a second refractive area 120. Wherein the first refractive zone 110 provides a first refractive power for correcting vision ametropia. The second refractive region 120 provides one or more second refractive powers different from the first refractive power. In some embodiments, the second refractive power is obtained by adding a positive refractive power or adding a negative refractive power on the basis of the first refractive power. Preferably, the difference value between the diopter of the second diopter area and the first diopter is 1.00D-9.00D. In some embodiments, one face of the ophthalmic lens 100 is used as the primer layer, and the refractive power of the primer layer is the first refractive power. A plurality of microlenses (e.g., microlenses 130 in a partially magnified view) are superimposed on the primer layer, and the area formed by the plurality of microlenses is the second dioptric area 120, which has one or more second dioptric powers different from the first dioptric power. Preferably, the myopic defocus of the plurality of lenticules may exhibit a continuous variation in a particular direction, resulting in a continuous variation in their diopter also in said particular direction, e.g. a gradual increase in diopter from the center to the outer lenticules, thereby increasing the defocus design, accommodating axial growth. In some embodiments, the spectacle lens 100 may further comprise a third dioptric region, a fourth dioptric region, and the like, based on the difference of diopter or position, and the present specification is not particularly limited.

In some embodiments, the microlenses may be disposed in any area of the spectacle lens 100, preferably, the microlenses are disposed outside the central area, for example, the central area has a diameter of 10 millimeters (mm), and the area is not disposed with the microlenses, that is, the area has only the first diopter, so that all light rays of 10mm of the central main visual area and partial light rays of the peripheral portion can be well landed on the retina, thereby realizing clear vision correction; and the second dioptric region, where the lenticules are located, focuses light at a location other than the retina, thereby modulating axial growth. In some embodiments, a plurality of microlenses are disposed on the ophthalmic lens 100 in a manner, preferably in an annular arrangement (e.g., the annular arrangement shown in fig. 3), said microlenses being located in different annular zones having different powers, e.g., the powers of the microlenses between the rings gradually increase from the center to the periphery according to a specific function (e.g., a proportional function, a quadratic function, an exponential function, a power function, etc.), which design can significantly improve the comfort of the wearer. The arrangement of the plurality of microlenses may be a hexagonal arrangement as shown in fig. 1, a tapered screw-like arrangement as shown in fig. 4, or the like.

In some embodiments, each microlens may be a spherical microlens or a rod microlens, and preferably, the microlens has a height of 0.1 to 5um and a diameter of a bottom surface of 0.1 to 5 mm. In some embodiments, the rod-shaped microlenses may be Fresnel lenses with a height of 0.01-5 um.

The microlenses and adjacent microlenses can be connected to each other by connecting posts, connecting balls, or a combination of both. As shown in fig. 2A, a plurality of microlenses 210 can be connected by connecting posts 220, and through such connection, the transitional increase between the far vision defocus when wearing the lens can be achieved, so that the wearing comfort is effectively improved, and the effect of controlling the far vision development is improved. As shown in FIG. 2B, the microlenses 230 can be connected by connecting columns 240, and through such connection, the transitional increase between the myopic defocuses when the lens is worn can be achieved, the wearing comfort is effectively improved, and the effect of controlling the myopic development is improved. In some embodiments, multiple directions of microlenses may be connected to adjacent microlenses via connecting posts or balls, e.g., six directions of each microlens form a connection to an adjacent microlens. In some embodiments, the connecting column may be formed by opening a channel between the microlenses, or may be a cylindrical microlens, and the connecting ball may be a spherical microlens. In some embodiments, the optical power of the lenticules is different from the optical power of the connecting columns or balls that connect the lenticules. Wherein, the diopter relation between the micro lens and the connecting column, the connecting ball or the combination of the micro lens and the connecting column and the connecting ball satisfies the following conditions:

where a and b are constants and x is the distance of the microlens from the center of the optic in millimeters (mm).

Examples 1 to 4 are specific examples of the spectacle lens of the present invention.

Example 1

The required semi-finished blank lens is obtained by using a lens raw material with the refractive index of 1.50 and the Abbe number of 58. Wherein the diameter of the lens is 80mm, and the first diopter of the lens is-2.00D.

Micro lenses are arranged in a circular ring with the diameter ranging from 10mm to 15mm from the center ring, the micro lenses are connected through connecting balls, the area is a second refraction area, the diopter of the second refraction area is the diopter of the micro lenses and the diopter of the connecting balls between the micro lenses, the diopter of the micro lenses is +3.50D, and the diopter of the connecting balls connected between the micro lenses is + 1.00D.

Micro lenses are arranged in a circular ring with the diameter ranging from 15mm to 20mm from the center ring, the micro lenses are connected through connecting balls, the area is a third refraction area, the diopter of the third refraction area is the diopter of the micro lenses and the diopter of the connecting balls, the diopter of the micro lenses is +4.00D, and the diopter of the connecting balls connected among the micro lenses is + 1.50D.

Micro lenses are arranged in a circular ring with the diameter ranging from 20mm to 35mm from the center ring, the micro lenses are connected through connecting balls, the area is a fourth refraction area, the diopter of the fourth refraction area is the diopter of the micro lenses and the diopter of the connecting balls, the diopter of the micro lenses is +4.50D, and the diopter of the connecting balls connected among the micro lenses is + 2.00D.

Accordingly, the first dioptric region is a region other than the second, third and fourth dioptric regions. Because the defocus amount is ensured, the problem of image jump among different diopters is solved, and the lens can reduce the growth trend of the axis of the eye of the teenagers, thereby inhibiting the rapid development of the myopia of the teenagers.

Example 2

The required semi-finished blank lens is obtained by using a lens raw material with the refractive index of 1.67 and the Abbe number of 30. Wherein the diameter of the lens is 80mm, and the first diopter of the lens is-8.00D.

And microlenses are arranged in a circular ring with the diameter ranging from 10mm to 15mm from the central ring to the outside, are connected by adopting a connecting ball, and are a second dioptric region. The diopter of the second diopter area is the diopter of the micro lenses and the diopter of the connecting balls, wherein the diopter of the micro lenses is +4.50D, and the diopter of the connecting balls connected among the micro lenses is + 2.00D.

Micro lenses are arranged in a circular ring with the outer diameter ranging from 15mm to 20mm from the center ring, the micro lenses are connected through connecting balls, the area is a third refraction area, the diopter of the third refraction area is the diopter of the micro lenses and the diopter of the connecting balls, the diopter of the micro lenses is +5.00D, and the diopter of the connecting balls connected among the micro lenses is + 2.50D.

Micro lenses are arranged in a circular ring with the diameter ranging from 20mm to 35mm from the center ring, the micro lenses are connected through connecting balls, the area is a fourth refraction area, the diopter of the fourth refraction area is the diopter of the micro lenses and the diopter of the connecting balls, the diopter of the micro lenses is +6.00D, and the diopter of the connecting balls connected among the micro lenses is + 3.00D.

The first dioptric region is a region other than the second, third and fourth dioptric regions. Because the defocus amount is ensured, the problem of image jump among different diopters is solved, and the lens can reduce the growth trend of the axis of the eye of the teenagers, thereby inhibiting the rapid development of the myopia of the teenagers.

Example 3

The required semi-finished blank lens is obtained by using a lens raw material with the refractive index of 1.50 and the Abbe number of 58. Wherein, the diameter of the lens is 80mm, and the first diopter of the lens is + 2.00D.

And microlenses are arranged in a circular ring with the diameter ranging from 10mm to 15mm from the central ring to the outside, the microlenses are connected through connecting balls, the diopter of a second diopter area in the area is the diopter of the microlenses and the diopter of the connecting balls, wherein the diopter of the microlenses is-3.50D, and the diopter of the connecting balls connected with the microlenses is-1.00D.

Microlenses are arranged in a circular ring with the diameter ranging from 15mm to 20mm from the central ring to the outside, the microlenses are connected through connecting balls, and the area is a third dioptric area. The diopter of the third diopter area is the diopter of the micro lenses and the diopter of the connecting balls, wherein the diopter of the micro lenses is-4.00D, and the diopter of the connecting balls connected among the micro lenses is-1.50D.

And microlenses are arranged in a circular ring within the range of 20-35mm outwards from the central ring, are connected through connecting balls, and are a fourth dioptric region. The diopter of the fourth diopter area is the diopter of the micro lenses and the diopter of the connecting ball, wherein the diopter of the micro lenses is-4.50D, and the diopter of the connecting ball mutually connected among the micro lenses is-2.00D.

The first dioptric region is a region other than the second, third and fourth dioptric regions. Because the defocus amount is ensured, the problem of image jump among different diopters is solved, the lens can accelerate the growth trend of the axis of the eye of the teenagers, and the over-fast development of the far vision of the teenagers can be inhibited.

Example 4

The required semi-finished blank lens is obtained by using a lens raw material with the refractive index of 1.60 and the Abbe number of 40. Wherein, the diameter of the lens is 80mm, and the first diopter of the lens is + 4.00D.

Micro lenses are arranged in a circular ring with the diameter ranging from 10mm to 15mm from the central ring, the micro lenses are connected through connecting columns, the area is a second refraction area, the diopter of the second refraction area is the diopter of the micro lenses and the diopter of the connecting columns, the diopter of the micro lenses is-4.00D, and the diopter of the connecting columns connected among the micro lenses is-1.50D.

Micro lenses are arranged in a circular ring with the diameter ranging from 15mm to 20mm from the central ring, the micro lenses are connected through connecting columns, the area is a third refraction area, the diopter of the third refraction area is the diopter of the micro lenses and the diopter of the connecting columns, the diopter of the micro lenses is-4.50D, and the diopter of the connecting columns connected among the micro lenses is-1.50D.

Microlenses are arranged in a circular ring with the diameter ranging from 20mm to 35mm from the central ring to the outside, the microlenses are connected through connecting columns, and the area is a fourth dioptric area. The diopter of the fourth diopter area is the diopter of the micro lenses and the diopter of the connecting columns, wherein the diopter of the micro lenses is-5.00D, and the diopter of the connecting columns connected among the micro lenses is-1.50D.

The first dioptric region is formed as a region other than regions formed as the second, third and fourth dioptric regions. Because the defocus amount is ensured, the problem of image jump among different diopters is solved, the lens can accelerate the growth trend of the axis of the eye of the teenagers, and the over-fast development of the far vision of the teenagers can be inhibited.

The beneficial effects that may be brought by the embodiments of the present description include, but are not limited to: (1) the spectacle lens of the utility model adopts the connecting ball, the connecting column or the combination thereof to connect the micro lenses, thereby solving the problem of image jump between different diopters; (2) the spectacle lens can effectively regulate the growth trend of the axis of the eye of teenagers, thereby inhibiting the development of the ametropia of the eye.

It should be understood that the exemplary embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects in various embodiments should generally be considered as viable for similar features or aspects in other embodiments.

Claims (10)

1. An ophthalmic lens for regulating juvenile eye axis growth tendency, comprising:

a first refractive zone providing a first refractive power for correcting vision ametropia;

a second dioptric region that focuses light at a position other than the retina and provides one or more second refractive powers different from the first refractive power, wherein the second dioptric region is provided with a plurality of microlenses connected to each other; and

a third dioptric region providing one or more third dioptric power different from the second dioptric power for increasing defocus of the ophthalmic lens.

2. The ophthalmic lens of claim 1, wherein the microlenses and adjacent microlenses are connected to each other by connecting posts, connecting balls, or a combination of both.

3. The ophthalmic lens of claim 2, wherein the diopter of the microlenses is different from the diopter of the connecting stud or connecting ball, wherein the diopter relationship between the microlenses and the connecting stud, connecting ball, or a combination thereof, satisfies:

where a and b are constants and x is the distance of the microlens from the center of the optic.

4. The ophthalmic lens of claim 1, wherein the microlenses are in an annular arrangement.

5. The ophthalmic lens of claim 4, wherein said microlenses located in different annular zones have different powers, and the absolute value of the power of said microlenses increases with increasing distance from the lens center.

6. The spectacle lens of claim 1, wherein the second refractive power is obtained by adding a positive refractive power or adding a negative refractive power on the basis of the first refractive power.

7. The ophthalmic lens of claim 6, wherein the difference between the refractive power of the second refractive area and the first refractive power is 1.00D to 9.00D.

8. The ophthalmic lens of claim 1, wherein the first refractive power is a refractive power of a spherical or aspherical lens.

9. The spectacle lens according to claim 1, wherein a raw material of the spectacle lens is a thermosetting resin, wherein a refractive index and an abbe number of the thermosetting resin satisfy at least one of the following conditions: (a) the refractive index is 1.67, and the Abbe number is more than or equal to 30; (b) the refractive index is 1.60, and the Abbe number is more than or equal to 40; (c) the refractive index is 1.56, and the Abbe number is more than or equal to 38; (d) the refractive index is 1.50, and the Abbe number is more than or equal to 56.

10. The spectacle lens according to claim 1, wherein a raw material of the spectacle lens is a thermoplastic resin, and the thermoplastic resin has a transmittance of not less than 90%.

Images