CN113625470B - Multidimensional refractive power design lens - Google Patents

Abstract

The invention discloses a multidimensional refractive power design lens, which comprises: a base lens divided into at least 5 regions, at least one lenslet disposed on the base lens; the micro lenses are arranged corresponding to the micro lenses, light passing through the micro lenses can pass through the corresponding micro lenses, the area of each micro lens is larger than that of the micro lens, the absolute value of the algebraic difference of refractive power at the center of each micro lens and the center of the base lens is 0.50 DS-10.00 DS, and the absolute value of the algebraic difference of refractive power at the center of each micro lens and the center of the base lens is smaller than that of the difference of the refractive power at the center of each micro lens and the center of the base lens. The lens is provided with the micro lens and the small lens simultaneously, the micro lens and the micro lens simultaneously provide peripheral defocusing of retina, wherein the micro lens forms larger defocusing amount on peripheral retina, and the lens has the effect of adjusting refractive development with larger intensity. The small lens provides smaller defocus amount, which increases the adaptation of retina to peripheral defocus, and further improves the tolerance of human eyes to peripheral defocus.

Description

A multi-dimensional refractive power design lens

technical field

The invention specifically relates to a multi-dimensional refractive power design lens.

Background technique

A refractive error is when light rays at infinity are not focused on the retina when the eye accommodation is at rest. Focusing in front of the retina is called myopia, and focusing behind the retina is called hyperopia. For the correction of refractive error, it brings huge economic burden to the society every year.

Animal experiments have shown that the myopic defocus around the retina can delay the growth of the eye axis, and the hyperopic defocus around the retina can promote the growth of the eye axis. When the same amount of myopic defocus and hyperopic defocus coexist, the effect of myopic defocus is stronger , can still delay eye axis growth. In recent years, new microlens frame glasses designed based on this principle have been applied clinically, and have achieved good myopia control effects.

Clinical studies have proved that there is a dose effect on the peripheral defocus of the retina, that is, the greater the peripheral defocus, the more obvious the effect of myopia prevention and control. At the same time, clinical experiments have observed that when the peripheral defocus amount is too high, there is no obvious myopia prevention and control effect. However, the greater the amount of peripheral defocus, the greater the disturbance to vision, which will not only cause a decrease in visual quality, but also easily cause adaptation difficulties.

Therefore, this patent intends to develop a new type of lens, so that even in the case of ultra-high peripheral defocus, it can also produce obvious myopia prevention and control effects, and at the same time, minimize visual discomfort.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multi-dimensional refractive power design lens.

To achieve the above object, the present invention provides the following technical solutions:

A multi-dimensional refractive power design lens, which includes:

Base lens, the base lens is divided into at least 5 areas, and one of the areas is a circular central area, other areas are distributed along the circumference of the circular central area, and the refractive power of the circular central area is greater than that of the peripheral area Refractive power, and the refractive power of the surrounding area shrinks clockwise from the initial area to the penultimate area, and the refractive power of the penultimate area is greater than that of the second area,

at least one lenslet disposed on the base lens;

At least one microlens is set corresponding to the small lens, and the microlens is set so that the light passing through the microlens can all pass through the corresponding small lens,

The area of the lenslet is larger than that of the microlens,

The absolute value of the algebraic difference between the refractive power of the microlens and the center of the base lens is 0.50DS to 10.00DS,

The absolute value of the algebraic difference in refractive power between the small lens and the center of the base lens is smaller than the absolute value of the difference between the microlens and the center of the base lens.

When the small lens and the microlens are on the same side, the microlens is located on the surface of the small lens;

When the small lens and the microlens are located on opposite sides, the positions of the two are conjugate.

In at least one area, the absolute value of the refractive power of the microlens decreases gradually toward the periphery along the meridian connecting the far-sighted reference point and the near-sighted reference point in the horizontal direction.

The absolute value of the refractive power of the microlens gradually increases from the center to the periphery.

The change function of the absolute value of the refractive power of the microlens from the center to the periphery, and along the meridian direction to the periphery is a Gaussian function or a quadratic function.

In at least one area, the absolute value of the refractive power of the small lens decreases gradually toward the periphery along the meridian connecting the far-sighted reference point and the near-sighted reference point in the horizontal direction.

The change function of the absolute value of the refractive power of the lenslet from the center to the periphery, and along the meridian direction to the periphery is a Gaussian function or a quadratic function.

The small lenses are arranged on the base lens in the form of concentric rings, concentric elliptical rings, conic rings and combinations thereof.

The lenslets are arranged in a spiral on the base lens.

The microlenses are arranged in hollow polygons, and the arrangement is equidistant or unequal, radial or non-radial or a combination thereof.

Beneficial effects of the present invention: a microlens and a small lens are arranged on the lens at the same time, and the small lens and the microlens simultaneously provide peripheral defocusing of the retina, wherein the defocusing amount formed by the microlens on the peripheral retina is relatively large, and has greater adjustment The effect of refractive development. The defocusing amount provided by the small lens is small, which increases the adaptation of the retina to peripheral defocusing, thereby improving the tolerance of the human eye to peripheral defocusing. By forming different levels of defocus areas in the peripheral retina, the effect of regulating the development of refractive error is enhanced, and at the same time, visual discomfort can be alleviated to the greatest extent.

Description of drawings

Fig. 1 is a schematic diagram of partitions of the base lens of the present invention.

Fig. 2 is a schematic diagram of the distribution of small lenses and microlenses on the base lens.

Fig. 3 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 5 is a schematic structural diagram of Embodiment 3 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In the present invention, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integral body; It may be a mechanical connection or a connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

As shown in the figure, the present invention discloses a multi-dimensional refractive power design lens, which includes:

Base lens, the base lens is divided into at least 5 areas, and one of the areas is a circular central area, other areas are distributed along the circumference of the circular central area, and the refractive power of the circular central area is greater than that of the peripheral area Refractive power, and the refractive power of the surrounding area shrinks clockwise from the initial area to the penultimate area, and the refractive power of the penultimate area is greater than that of the second area,

at least one lenslet disposed on the base lens;

At least one microlens is set corresponding to the small lens, and the microlens is set so that the light passing through the microlens can all pass through the corresponding small lens,

The area of the lenslet is larger than that of the microlens,

The absolute value of the algebraic difference between the refractive power of the microlens and the center of the base lens is 0.50DS to 10.00DS,

The absolute value of the algebraic difference in refractive power between the small lens and the center of the base lens is smaller than the absolute value of the difference between the microlens and the center of the base lens.

The microlens can be located on the surface of the base lens, or on the surface of the small lens, or both exist at the same time.

Wherein, the base lens, the microlens and the small lens can all adopt a spherical lens with a spherical surface design or a spherical lens with an aspheric surface design.

All three can adopt bifocal, trifocal or multifocal design, and can also adopt progressive focal design.

All three optical designs can contain rotationally symmetrical designs.

All three can be designed with a toric surface.

All three can use cylindrical lenses, or a combination of spherical lenses and cylindrical lenses.

All three can produce high-order aberrations, including but not limited to spherical aberration, coma, trefoil aberration and so on.

Base lenses, microlenses, and lenslets have symmetrical areas on the lens that can have different refractive powers.

The base lens is divided into 5 areas, the circular central area is Q5, which is set concentrically with the lens, and the other four areas are distributed around the circular central area, and the initial area is Q1, which are defined sequentially. If the absolute value of the refractive power is taken, then Each area is at the same distance from the center, and the refractive power of each area is set as follows, Q5>(Q4, Q1)>Q2>Q3, and the areas of areas Q1-Q4 can be the same or different, and the boundaries of the four areas It is a curve, and the diopter change at the junction of the four areas is a gradual transition design.

The partition of the base lens can be designed in the same way as the progressive lens.

The small lens is arranged on the base lens, which can be located on the front surface, the rear surface or between the front and rear surfaces of the base lens, and the two are connected by a gradual transition connection.

They can be arranged and distributed on the base lens according to a spiral arrangement, and the center point thereof is the reference point of the far vision of the lens.

Concentric rings, concentric elliptical rings and other conic rings may also be used, or combinations thereof.

And the small lens that is distributed on the base lens, its top view shape can be circular, ellipse etc. curved shape, or its top view shape is regular triangle, square, regular pentagon, regular hexagon and other regular polygons etc. shapes, Or its top view shape is triangle, rectangle, pentagon, hexagon and other polygonal shapes.

The diameter of the small lens is 0.5mm-4mm, and its diameter needs to be larger than that of the microlens, and the diameter of each small lens can be different.

The distance between the geometric centers of the individual lenslets is 1mm-10mm, but greater than the geometric center distance between the microlenses.

The geometric center distance between individual lenslets may vary.

The area of the small lens includes the area of the micro-lens located thereon, and the sum of its area accounts for 15%-85% of the sum of the lens area except the initial area Q1.

The lenslets may employ diffractive mirror pixelated mirrors.

The small lens can be a π-Fresnel lens.

From the center to the periphery, the absolute value of the refractive power of the lenslet increases gradually.

In at least one area of Q1-Q5, in the horizontal direction, the absolute value of the refractive power of the small lens decreases gradually toward the periphery along the meridian connecting the reference point of far vision and the reference point of near vision.

From the center to the periphery, and from the meridian to the periphery, the change function of the absolute value of the refractive power is a Gaussian function, such as Among them, a, b, c are coefficients respectively, x is the distance from the optical center, and y is the refractive power of the small lens.

From the center to the periphery, and from the meridian to the periphery, the change function of the absolute value of the refractive power is a quadratic function, such as: y=ax ² +bx ² +c, where a, b, c are coefficients, and x is the distance optics The distance from the center, y is the refractive power of the small lens.

From the center to the periphery, and from the meridian to the periphery, the absolute value of the refractive power of different sections in the area can have different functional changes.

The function change described above is asymmetrical.

In different areas, the absolute value of the refractive power may have different functional changes, and the above-mentioned functional changes are asymmetrical. In order to adapt to the shape of the different regions of the retina and the sensitivity of the choroid.

The change of the absolute value of the small lens refractive power is different in different meridians, and the change rule is determined by the axial direction of astigmatism.

Described microlens can be positioned at the front surface of base lens, rear surface or inside base lens, and when lenslet and microlens are on the same side, microlens is positioned at lenslet surface; And when lenslet and microlens are not on the same side When , the positions of the two are set conjugately, and it is necessary to ensure that all the light passing through the microlens can pass through the corresponding small lens.

The diameter of the microlens is 0.5 mm to 4 mm.

The microlenses may have different diameters.

The distance between the geometric centers of the microlenses is 1mm˜10mm.

The geometric center distance between microlenses may vary.

The total area of the microlens accounts for 15%-85% of the total area of the lenses other than Q1.

Microlenses can be composed of birefringent materials.

The microlenses can be diffractive lenses or pixelated lenses or π-Fresnel lenses.

From the center to the periphery, the absolute value of the refractive power of the microlens increases gradually.

In at least one area of Q1-Q5, in the horizontal direction, the absolute value of the refractive power of the microlens gradually decreases toward the periphery along the meridian connecting the reference point for far vision and the reference point for near vision.

From the center to the periphery, and from the meridian to the periphery, the change function of the absolute value of the refractive power is a Gaussian function, such as Wherein, a, b, c are coefficients respectively, x is the distance from the optical center, and y is the refractive power of the microlens.

From the center to the periphery, and from the meridian to the periphery, the change function of the absolute value of the refractive power is a quadratic function, such as: y=ax ² +bx ² +c, where a, b, c are coefficients, and x is the distance optics The distance between the centers, y is the refractive power of the microlens.

From the center to the periphery, and from the meridian to the periphery, the absolute value of the refractive power of different sections in the area can have different functional changes.

The function change described above is asymmetrical.

In different areas, the absolute value of the refractive power may have different functional changes, and the above-mentioned functional changes are asymmetrical. In order to adapt to the shape of the different regions of the retina and the sensitivity of the choroid.

The change of the absolute value of the refractive power of the microlens is different in different meridians, and the change rule is determined according to the axial direction of astigmatism.

At the same time, the microlenses can be arranged on the small lens surface or the base lens for multiple distributions, or a combination of the two. The arrangement of the microlenses can be hollow triangles, hollow squares, hollow pentagons, hollow hexagons and others. , the arrangement is radial or non-radial, equidistant or unequal, or a combination of the above arrangements.

The connection between the microlens and the small lens is a gradual transition connection.

Each micro-lens can be arranged continuously or discontinuously.

From the center to the periphery, the absolute value of the refractive power of the microlens increases gradually.

In addition, the "small lens" in this article is one of the methods listed in this multi-dimensional lens patent. Any form of lens with different diopters and diameters that is continuously placed between the microlens and the base lens should be regarded as a small lens 2, a small lens 3, etc., also do not depart from the scope of protection of this patent.

The lenslets or microlenses involved in this application can be ground into optical lenses to be worn directly in front of the eyes.

The lenslets or microlenses referred to in this application can be ground into optical lenses by adsorption on the front of other eyeglasses.

The lenslets or microlenses involved in this application can be designed as a film, and when designed as a film, the film can be dyed.

As shown in FIG. 3 , the top view of the small lens on the base lens is circular, and the number of microlenses is two.

As shown in FIG. 4 , the top view of the small lens on the base lens is circular, and the number of microlenses is three.

As shown in Figure 5, the number of small lenses is two, and the top view on each small lens base lens is circular, the two are annularly distributed, and the number of microlenses on the small lens is one, both Concentric circle design.

The embodiments should not be regarded as limiting the present invention, but any improvement based on the spirit of the present invention should be within the protection scope of the present invention.

Claims (10)

1. A multi-dimensional refractive power design lens is characterized in that: it comprises: Base lens, the base lens is divided into at least 5 areas, and one of the areas is a circular central area, other areas are distributed along the circumference of the circular central area, and the refractive power of the circular central area is greater than that of the peripheral area Refractive power, and the refractive power of the surrounding area shrinks clockwise from the initial area to the penultimate area, and the refractive power of the penultimate area is greater than that of the second area, at least one lenslet disposed on the base lens; At least one microlens is set corresponding to the small lens, and the microlens is set so that the light passing through the microlens can all pass through the corresponding small lens, The area of the lenslet is larger than that of the microlens, The absolute value of the algebraic difference between the refractive power of the microlens and the center of the base lens is 0.50DS~10.00DS, The absolute value of the algebraic difference between the refractive power of the small lens and the center of the base lens is less than 0.50DS-10.00DS. 2. A kind of multidimensional refractive power design lens according to claim 1, characterized in that: When the small lens and the microlens are on the same side, the microlens is located on the surface of the small lens; When the small lens and the microlens are located on opposite sides, the positions of the two are conjugate. 3. A kind of multidimensional refractive power design lens according to claim 2, characterized in that: in at least one area, the absolute value of the microlens refractive power is along the meridian direction connecting the far reference point and the near reference point in the horizontal direction. The perimeter gradually decreases. 4 . The multi-dimensional refractive power design lens according to claim 1 , wherein the absolute value of the refractive power of the microlens gradually increases from the center to the periphery. 5. A multi-dimensional refractive power design lens according to claim 4, characterized in that: the change function of the absolute value of the refractive power of the microlens from the center to the periphery along the meridian direction is a Gaussian function or a quadratic function. 6. A multi-dimensional refractive power design lens according to claim 1, characterized in that: in at least one area, the absolute value of the small lens refractive power extends to the periphery along the meridian connecting the far-sighted reference point and the near-sighted reference point in the horizontal direction Gradually decreases. 7. A multi-dimensional refractive power design lens according to claim 6, characterized in that: the change function of the absolute value of the refractive power of the small lens from the center to the periphery along the meridian is a Gaussian function or a quadratic function. 8. A multi-dimensional refractive power design lens according to claim 1, characterized in that: said small lens is formed on said base lens according to concentric rings, concentric elliptical rings, conic rings and combinations thereof arranged. 9. The multi-dimensional refractive power design lens according to claim 1, wherein the small lenses are arranged in a spiral on the base lens. 10. A multi-dimensional refractive power design lens according to claim 1, characterized in that: said microlenses are arranged in hollow polygons, and the arrangement is equidistant or unequal, radial or non-radial arrangement.

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