A microlens multifocal lens for delaying myopia progression

Abstract

The present invention provides a microlens multifocal lens for delaying myopia progression, which solves problems such as myopia inhibition. It includes a main lens body and a secondary lens body arranged in a stacked manner. A light guide layer is provided between the main lens body and the secondary lens body, and microlenses are evenly arranged on the light guide layer. An adaptive adjustment mechanism is provided between the main lens body and the secondary lens body, and a light guide liquid is filled between the main lens body and the secondary lens body and the light guide layer. The present invention has advantages such as good myopia inhibition effect and comfortable use.

Description

Technical Field

[0001] The invention belongs to the technical field of myopia lenses, and in particular relates to a microlens multifocal lens for delaying the progression of myopia. Background Art

[0002] With the introduction of the "defocus theory", major lens manufacturers have produced a variety of defocus lenses. Microlens lenses use the principle of adding positive lenses on the periphery to converge light to pull the peripheral images to the front of the retina. The starting point is always to ensure that the central vision is clear while allowing the peripheral images to fall on the front of the retina, which has a traction effect on the retina and plays a preventive and control effect. However, in actual use, due to the uneven distribution of microlenses, at a certain position of the lens, there are 5-6 microlenses within the pupil range, and only 1-2 or none at the side. In this case, when the eyeball turns or the head turns, the image of the retina will change dramatically, seriously affecting the wearing comfort. In addition, the refractive power of existing microlens lenses remains fixed. As the wearer's eye axis changes, it cannot adapt to the wearer's eye defocus after long-term use, resulting in a decrease in its myopia suppression effect.

[0003] In order to solve the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a composite multi-point microlens defocus lens with a tapered thread arrangement and a design method thereof [202110550377.4], wherein both sides of the lens are spherical or aspherical, one side of the lens is used as a base layer, and the refractive power of the base layer is based on the refractive power of the prescription for correcting visual ametropia; a multifocal microlens with a tapered thread arrangement is superimposed on the base layer to make the myopic defocus amount continuous; the microlens includes a spherical microlens and a linear convex microlens, and two adjacent spherical microlenses are connected to each other along the tapered thread direction through a linear convex microlens.

[0004] The above solution solves the problem of poor wearing comfort caused by uneven distribution of microlenses to a certain extent, but the solution still has many shortcomings, such as the inability to adapt to changes in the eye axis. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a microlens multifocal lens with reasonable design, which can effectively adapt to the changes in the eye axis and delay the progression of myopia.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A microlens multifocal lens for delaying myopia progression, comprising a main lens body and a secondary lens body arranged in a stacked manner. A light guide layer is provided between the main lens body and the secondary lens body, and microlenses are uniformly arranged on the light guide layer. An adaptive adjustment mechanism is provided between the main lens body and the secondary lens body, and a light guide liquid is filled between the main lens body and the secondary lens body and the light guide layer. The adaptive adjustment mechanism is arranged between the main lens body and the secondary lens body to achieve elastic connection between the main lens body and the secondary lens body, and can finely adjust the relative distance. The light guide liquid therebetween ensures normal conduction and refraction of light in the main lens body and the secondary lens body. By periodically adjusting the relative distance between the main lens body and the secondary lens body, dynamic adjustment of the overall diopter of the lens is realized, effectively delaying the further development of myopia.

[0007] In the above-mentioned microlens multifocal lens for delaying myopia progression, the adaptive adjustment mechanism includes a limiting mechanism arranged between the main lens body and the secondary lens body. The main lens body and the secondary lens body are provided with a closing mechanism along the circumferential direction, and correction mechanisms are respectively provided between the main lens body and the secondary lens body and the light guide layer. Compared with wearing glasses intermittently, using the adaptive adjustment mechanism to finely adjust the diopter of the lens can effectively relieve eye fatigue.

[0008] In the above-mentioned microlens multifocal lens for delaying myopia progression, the limiting mechanism includes an axial limiting component and a circumferential limiting component. The limiting mechanism restricts the adjustment mode of the main lens body and the secondary lens body, and at the same time plays a limiting role on the light guide layer.

[0009] In the above-mentioned microlens multifocal lens for delaying myopia progression, the circumferential limiting component includes limiting edges distributed along the circumference of the main lens body. The limiting edges are arranged on the side of the main lens body close to the secondary lens body. A limiting protrusion is provided on the side of the secondary lens body opposite to the main lens body, and the limiting protrusion is opposite to the inner side of the limiting edge; the limiting edge is integrally formed with the main lens body, and the transition at the junction of the limiting edge and the main lens body is smooth; the limiting protrusion is integrally formed with the secondary lens body, and the transition at the junction of the limiting protrusion and the secondary lens body is smooth. The circumferential limiting component ensures that the foci of the secondary lens body and the main lens body are on the same axis, ensures the coincidence of the optical centers of the lenses, and ensures the imaging effect.

[0010] In the above-mentioned microlens multifocal lens for delaying myopia progression, the axial limiting component includes a limiting frame body arranged between the limiting protrusion and the limiting edge; the limiting frame body includes a support sheet arranged between the main lens body and the light guide layer. An elastic pressing sheet is provided on the side of the support sheet opposite to the main lens body. The pressing sheet has a flanging along the circumference to wrap the edge of the support edge. The side of the support sheet opposite to the light guide layer has a support edge in contact with the secondary lens body. The edge of the light guide layer is tightly fixed to the inner side of the support edge, and the light guide layer is tightly attached to the support sheet. The axial limiting component ensures that the main lens body and the secondary lens body are in a connected state, and cooperates with the closing mechanism to realize movable limiting of the main lens body and the secondary lens body.

[0011] In the above-mentioned microlens multifocal lens for delaying myopia progression, the sealing mechanism includes a sealing edge provided at the edges of the main lens body and the sub-lens body. The sealing edge has a sealing layer disposed between the main lens body and the sub-lens body. The sealing edge and its sealing layer are elastic and fit tightly against the main lens body and the sub-lens body, and a gap for filling with colloid is left between the edges of the main lens body and the sub-lens body. The sealing mechanism seals the edges of the main lens body and the sub-lens body, while keeping the interiors of the main lens body and the sub-lens body in a negative pressure state. The light guide liquid completely fills the gap between them, avoiding the generation of air bubbles.

[0012] In the above-mentioned microlens multifocal lens for delaying myopia progression, the optical correction mechanism includes indicating scales respectively provided on the main lens body and the sub-lens body. The indicating scales are arranged in an overlapping manner and are respectively arranged on the opposite arc surfaces of the main lens body and the sub-lens body. The indicating scales are in a ring shape or an arc shape. The optical correction mechanism indicates the relative distance between the main lens body and the sub-lens body, and precisely indicates the amount of change in their distance through preset scale values.

[0013] In the above-mentioned microlens multifocal lens for delaying myopia progression, the microlenses on the light guide layer are defocus lenses, the main lens body and the sub-lens body are concave lenses, and an anti-blue light film is covered on the outside of the main lens body. The microlenses on the light guide layer generate myopic defocus, blocking the image behind the retina and cutting off the signal for the growth of the eye axis, effectively inhibiting the growth of myopia degree.

[0014] In the above-mentioned microlens multifocal lens for delaying myopia progression, the sub-lens body has a hyperopia area and a myopia area. The hyperopia area is set above the myopia area, and transition areas are left on both sides and between the hyperopia area and the myopia area; the microlenses on the light guide layer opposite to the myopia area and the hyperopia area are respectively distributed in a fan shape, and the defocus amount of the microlenses opposite to the hyperopia area and the myopia area gradually increases from the side close to the transition area towards the other end; the microlenses on the light guide layer opposite to the transition area have an asymmetric structure. The sub-lens body divides the hyperopia area and the myopia area, and their different diopters effectively adapt to the eye usage habits, and the microlenses distributed in a fan shape ensure the defocus effect.

[0015] In the above-mentioned microlens multifocal lens for delaying myopia progression, the refractive index deviation of the light guide liquid from the main lens body and the sub-lens body is 0.5%-0.7%; the refractive index of the main lens body and the sub-lens body is 1.50-1.74; the Abbe number of the main lens body and the sub-lens body is 33.0-58.0; the refractive index of the light guide layer and its microlenses is 1.56-1.71; the Abbe number of the light guide layer and its microlenses is 35-54. Limiting the deviation amount of the refractive index of the light guide liquid from the lens body ensures the imaging quality.

[0016] Compared with the existing technologies, the advantages of the present invention are as follows: An adaptive adjustment mechanism is provided between the main lens body and the secondary lens body, and the diopter of the main lens body and the secondary lens body is finely adjusted to adapt to the change of the eye axis, effectively alleviating the deepening of myopia; A light guide layer with microlenses is provided between the main lens body and the secondary lens body, and myopia defocus is generated to inhibit the growth of myopia degree; A hyperopia area and a myopia area are provided on the secondary lens body to adapt to the eye usage habit and effectively reduce eye fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is an expanded structural diagram of the present invention;

[0019] Figure 3 is a schematic structural diagram of the main lens body of the present invention;

[0020] Figure 4 is a schematic structural diagram of the secondary lens body of the present invention;

[0021] Figure 5 is a schematic structural diagram of the light guide layer of the present invention;

[0022] Figure 6 is a schematic structural diagram of the light guide layer from another perspective of the present invention;

[0023] Figure 7 is a partial cross-sectional view of the present invention;

[0024] In the figure, main lens body 1, secondary lens body 2, hyperopia area 21, myopia area 22, transition area 23, light guide layer 3, blue light blocking film 31, adaptive adjustment mechanism 4, light guide liquid 41, limiting mechanism 5, sealing mechanism 6, sealing edge 61, sealing layer 62, optical correction mechanism 7, indicating scale 71, axial limiting component 8, limiting frame body 81, support piece 82, pressing piece 83, flanging 84, support edge 85, circumferential limiting component 9, limiting edge 91, limiting protrusion 92. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Embodiment 1

[0027] As Figure 1-2As shown, a microlens multifocal lens for delaying myopia progression comprises a stacked main lens body 1 and a sub-lens body 2, a light guide layer 3 is arranged between the main lens body 1 and the sub-lens body 2, microlenses are evenly arranged on the light guide layer 3, an adaptive adjustment mechanism 4 is arranged between the main lens body 1 and the sub-lens body 2, and a light guide liquid 41 is filled between the main lens body 1 and the sub-lens body 2 and the light guide layer 3. The edges of the main lens body 1 and the sub-lens body 2 are flush, and the adaptive adjustment mechanism 4 between them supports the main lens body 1 and the sub-lens body 2, and a gap is left between them for filling the light guide liquid 41 to ensure normal light transmission. At the same time, the main lens body 1 and the sub-lens body 2 can adjust the relative distance to achieve fine adjustment of the overall diopter of the lens. When in use, they are matched with a prefabricated frame, and the relative distance is limited by the frame and periodically adjusted, so as to relieve eye fatigue and inhibit the development of myopia without affecting daily use.

[0028] like Figure 7 As shown, the adaptive adjustment mechanism 4 includes a limiting mechanism 5 arranged between the main mirror body 1 and the auxiliary mirror body 2, a sealing mechanism 6 is arranged circumferentially between the main mirror body 1 and the auxiliary mirror body 2, and a light correction mechanism 7 is arranged between the main mirror body 1 and the auxiliary mirror body 2 and the light guide layer 3. The limiting mechanism 5 is used to limit the relative range of movement of the main mirror body 1 and the auxiliary mirror body 2, and the gap between the edges is filled by the sealing mechanism 6 to ensure the internal sealing of the main mirror body 1 and the auxiliary mirror body 2, and avoid residual bubbles between the light guide liquid 41 and the mirror body.

[0029] In depth, the limiting mechanism 5 includes an axial limiting assembly 8 and a circumferential limiting assembly 9. The axial limiting assembly 8 and the circumferential limiting assembly 9 limit the axial and circumferential positions of the main mirror body 1 and the auxiliary mirror body 2, prevent the main mirror body 1 and the auxiliary mirror body 2 from deflecting in the circumferential direction, limit their relative distance, and ensure that a certain buffer gap is left between them.

[0030] like Figure 3-4 As shown, the circumferential limiting component 9 includes a limiting edge 91 distributed along the circumference of the main mirror body 1, the limiting edge 91 is arranged on a side of the main mirror body 1 close to the auxiliary mirror body 2, and a limiting protrusion 92 is arranged on the side of the auxiliary mirror body 2 opposite to the main mirror body 1, and the limiting protrusion 92 is opposite to the inner side of the limiting edge 91; the limiting edge 91 is integrally formed with the main mirror body 1, and the junction between the limiting edge 91 and the main mirror body 1 has a smooth transition; the limiting protrusion 92 is integrally formed with the auxiliary mirror body 2, and the junction between the limiting protrusion 92 and the auxiliary mirror body 2 has a smooth transition. The limiting edge 91 is clamped with the limiting protrusion 92, wherein the main mirror body 1 and the auxiliary mirror body 2 are preformed by injection molding, and the outer sides of the limiting edge 91 and the limiting protrusion 92 are adapted to the mirror frame, wherein the junctions between the limiting protrusion 92 and the auxiliary mirror body 2 and the limiting edge 91 and the main mirror body 1 are chamfered to reduce the processing difficulty and facilitate the rapid molding of the main mirror body 1. The formed auxiliary mirror body 2 and the main mirror body 1 are non-circular structures to avoid circumferential misalignment.

[0031] Further, the axial limiting component 8 includes a limiting frame body 81 disposed between the limiting protrusion 92 and the limiting edge 91; the limiting frame body 81 includes a support sheet 82 disposed between the main lens body 1 and the light guide layer 3. On one side of the support sheet 82 opposite to the main lens body 1, there is an elastic pressing sheet 83. The pressing sheet 83 has a flanging 84 that wraps the edge of the support edge 85 along the circumferential direction. On one side of the support sheet 82 opposite to the light guide layer 3, there is a support edge 85 that contacts the secondary lens body 2. The edge of the light guide layer 3 is tightly pressed and fixed to the inner side of the support edge 85, and the light guide layer 3 is tightly attached and pressed to the support sheet 82. The limiting frame body 81 is tightly attached and pressed to the main lens body 1 and the secondary lens body 2. The whole limiting frame body 81 is made of a transparent material to ensure normal light transmission. The elastic pressing sheet 83 is equipped with a rigid support sheet 82 and support edge 85, providing a separating moment for the main lens body 1 and the secondary lens body 2. At the same time, due to the negative pressure moment provided by the closing mechanism 6, the main lens body 1 and the secondary lens body 2 will not be completely separated.

[0032] In addition, the closing mechanism 6 includes a closing edge 61 disposed at the edges of the main lens body 1 and the secondary lens body 2. The closing edge 61 has a closing layer 62 disposed between the main lens body 1 and the secondary lens body 2. The closing edge 61 and its closing layer 62 are elastic and tightly attached and pressed to the main lens body 1 and the secondary lens body 2. There is a gap for filling colloid left between the edges of the main lens body 1 and the secondary lens body 2. The closing mechanism 6 is made of silica gel material. Under the action of negative pressure, the closing layer 62 adsorbs and fixes the edges of the main lens body 1 and the secondary lens body 2, and the closing edge 61 wraps the outside of the main lens body 1 and the secondary lens body 2, and at the same time serves as the installation base of the lens frame.

[0033] At the same time, the optical correction mechanism 7 includes indicating scales 71 respectively disposed on the main lens body 1 and the secondary lens body 2. The indicating scales 71 are arranged in an overlapping manner and are respectively arranged on the opposite arc surfaces of the main lens body 1 and the secondary lens body 2. The indicating scales 71 are in a ring shape or an arc shape. The main lens body 1 and the secondary lens body 2 are arranged in an overlapping manner. When the relative distance is adjusted to adjust the relative position along the fixed axis, since the main lens body 1 and the secondary lens body 2 are arc-shaped, the indicating scales 71 on their surfaces shift in the axial direction projection as the distance is adjusted. The indicating scales 71 are marked with scales for specifying distances. When the scales coincide, it indicates that the adjustment reaches the specified diopter. At the same time, according to the coincidence state of the indicating scales 71, it is judged whether the main lens body 1 and the secondary lens body 2 are offset.

[0034] Visibly, the microlenses on the light guide layer 3 are defocusing lenses, the main lens body 1 and the secondary lens body 2 are concave lenses, and an anti-blue light film 31 is covered on the outside of the main lens body 1. The main lens body 1, the secondary lens body 2 and the light guide layer 3 are stacked. The overall diopter of the lens is approximately equal to the sum of the three. According to the need, a light guide liquid 41 with a suitable refractive index is filled. The commonly used light guide liquid 41 is polydimethylsiloxane, and the main lens body 1 and the secondary lens body 2 are resin lenses.

[0035] Such as Figure 5-6As shown in the figure, the secondary lens body 2 has a hyperopia area 21 and a myopia area 22. The hyperopia area 21 is arranged above the myopia area 22. There are transition areas 23 on both sides of and between the hyperopia area 21 and the myopia area 22. The microlenses on the light guide layer 3 opposite to the myopia area 22 and the hyperopia area 21 are respectively distributed in a fan shape. The defocus amount of the microlenses opposite to the hyperopia area 21 and the myopia area 22 gradually increases from the side close to the transition area 23 towards the other end. The microlenses on the light guide layer 3 opposite to the transition area 23 have an asymmetric structure. Multiple visual areas meet different hyperopia and myopia requirements, and the asymmetric structures on both sides adapt to the usage habits of the human eye.

[0036] Preferably, the refractive index deviation of the light guide liquid 41 from the main lens body 1 and the secondary lens body 2 is 0.5% - 0.7%; the refractive indices of the main lens body 1 and the secondary lens body 2 are 1.50 - 1.74; the Abbe numbers of the main lens body 1 and the secondary lens body 2 are 33.0 - 58.0; the refractive indices of the light guide layer 3 and its microlenses are 1.56 - 1.71; the Abbe numbers of the light guide layer 3 and its microlenses are 35 - 54. The refractive index of the main lens body 1 and the secondary lens body 2 is preferably 1.56, and the Abbe number is 48; the refractive index of the light guide layer 3 is 1.60, and the Abbe number is 35.

[0037] Embodiment 2

[0038] The structure, principle, implementation steps of this embodiment are similar to those of Embodiment 1. The difference is that the filling material between the main lens body 1 and the secondary lens body 2 and the light guide layer 3 is not limited to liquid. A high light transmittance colloid such as LED encapsulant is selected to solidify the main lens body 1 and the secondary lens body 2. When the relative distance between the main lens body 1 and the secondary lens body 2 is adjusted to a specified value, the colloid is injected and corresponding jigs are equipped. After the colloid is solidified, the overall diopter of the lens is fixed.

[0039] In summary, the principle of this embodiment is as follows: The main lens body 1 and the secondary lens body 2 are stacked and arranged. The circumferential limit by the limit edge 91 and the limit protrusion 92 avoids deviation. The limit frame body 81 between them provides an elastic moment to realize the axial limit of the main lens body 1 and the secondary lens body 2. The light guide liquid 41 is sealed into the gap between the main lens body 1 and the secondary lens body 2 by the sealing mechanism 6. The main lens body 1 and the secondary lens body 2 are periodically and quickly adjusted by external frame and other components, effectively relieving eye fatigue and inhibiting the development of myopia.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although terms such as main lens body 1, secondary lens body 2, hyperopia area 21, myopia area 22, transition area 23, light guide layer 3, blue light blocking film 31, adaptive adjustment mechanism 4, light guide liquid 41, limiting mechanism 5, sealing mechanism 6, sealing edge 61, sealing layer 62, light correction mechanism 7, indicating scale 71, axial limiting component 8, limiting frame body 81, supporting piece 82, pressing piece 83, flanging 84, supporting edge 85, circumferential limiting component 9, limiting edge 91, limiting protrusion 92, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A microlens multifocal lens for delaying myopia progression, comprising a main lens body (1) and a secondary lens body (2) arranged in a stacked manner, with a light guide layer (3) provided between the main lens body (1) and the secondary lens body (2). Characterized in that, The light guide layer (3) is evenly arranged with microlenses, an adaptive adjustment mechanism (4) is provided between the main lens body (1) and the secondary lens body (2), and a light guide liquid (41) is filled between the main lens body (1) and the secondary lens body (2) and the light guide layer (3); the adaptive adjustment mechanism (4) includes a limiting mechanism (5) provided between the main lens body (1) and the secondary lens body (2), a sealing mechanism (6) is arranged along the circumferential direction of the main lens body (1) and the secondary lens body (2), and correction mechanisms (7) are respectively provided between the main lens body (1) and the secondary lens body (2) and the light guide layer (3); the limiting mechanism (5) includes an axial limiting component (8) and a circumferential limiting component (9); the circumferential limiting component (9) includes limiting edges (91) distributed along the circumference of the main lens body (1), the limiting edges (91) are arranged on the side of the main lens body (1) close to the secondary lens body (2), a limiting protrusion (92) is provided on the side of the secondary lens body (2) opposite to the main lens body (1), and the limiting protrusion (92) is opposite to the inner side of the limiting edge (91); the limiting edge (91) is integrally formed with the main lens body (1), and the transition between the limiting edge (91) and the main lens body (1) is smooth; the limiting protrusion (92) is integrally formed with the secondary lens body (2), and the transition between the limiting protrusion (92) and the secondary lens body (2) is smooth.

2. A microlens multifocal lens for delaying myopia progression according to claim 1, Characterized in that, The axial limiting component (8) includes a limiting frame body (81) provided between the limiting protrusion (92) and the limiting edge (91); the limiting frame body (81) includes a support sheet (82) provided between the main lens body (1) and the light guide layer (3), an elastic pressing sheet (83) is provided on the side of the support sheet (82) opposite to the main lens body (1), the pressing sheet (83) has a flanging (84) that wraps the edge of the support edge (85) along the circumference, the support sheet (82) has a support edge (85) in contact with the secondary lens body (2) on the side opposite to the light guide layer (3), the edge of the light guide layer (3) is tightly pressed and fixed to the inner side of the support edge (85), and the light guide layer (3) is tightly attached to the support sheet (82).

3. A microlens multifocal lens for delaying myopia progression according to claim 1, Characterized in that, The sealing mechanism (6) includes a sealing edge (61) provided at the edges of the main lens body (1) and the secondary lens body (2), the sealing edge (61) has a sealing layer (62) provided between the main lens body (1) and the secondary lens body (2), the sealing edge (61) and its sealing layer (62) are elastic and tightly attached to the main lens body (1) and the secondary lens body (2), and a gap for filling with colloid is left between the edges of the main lens body (1) and the secondary lens body (2).

4. A microlens multifocal lens for delaying myopia progression according to claim 1, characterized in that, the light correction mechanism (7) includes indicating scales (71) respectively arranged on the main lens body (1) and the auxiliary lens body (2), the indicating scales (71) are arranged in an overlapping manner and are respectively arranged on the opposite arc surfaces of the main lens body (1) and the auxiliary lens body (2), and the indicating scales (71) are annular or arc-shaped.

5. A microlens multifocal lens for delaying myopia progression according to claim 1, characterized in that, the microlenses on the light guide layer (3) are defocus lenses, the main lens body (1) and the auxiliary lens body (2) are concave lenses, and the outer side of the main lens body (1) is covered with a blue light blocking film (31).

6. A microlens multifocal lens for delaying myopia progression according to claim 5, characterized in that, the auxiliary lens body (2) has a hyperopia area (21) and a myopia area (22), the hyperopia area (21) is arranged above the myopia area (22), and transition areas (23) are left on both sides and between the hyperopia area (21) and the myopia area (22); the microlenses on the light guide layer (3) opposite to the myopia area (22) and the hyperopia area (21) are respectively distributed in a fan shape, and the defocus amounts of the microlenses opposite to the hyperopia area (21) and the myopia area (22) gradually increase from the side close to the transition area (23) towards the other end; the microlenses on the light guide layer (3) opposite to the transition area (23) have an asymmetric structure.

7. A microlens multifocal lens for delaying myopia progression according to claim 6, characterized in that, the refractive index of the light guide liquid (41) deviates from that of the main lens body (1) and the auxiliary lens body (2) by 0.5% - 0.7%; the refractive indices of the main lens body (1) and the auxiliary lens body (2) are 1.50 - 1.74; the Abbe numbers of the main lens body (1) and the auxiliary lens body (2) are 33.0 - 58.0; the refractive indices of the light guide layer (3) and its microlenses are 1.56 - 1.71; the Abbe numbers of the light guide layer (3) and its microlenses are 35 - 54.

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