Gradient type dynamic defocus lens

Abstract

A tapered dynamic out-of-focus lens comprises a first group of lenses and a second group of lenses, the first group of lenses and the second group of lenses comprise left lenses and right lenses, and the left lenses and the right lenses of the first group of lenses and the second group of lenses comprise lens substrates. A circular central optical area at the circle center, an annular defocusing area at the periphery of the central optical area and an annular edge area at the periphery of the defocusing area are arranged on the lens base body. Dynamic defocus intervention is realized by periodically and alternately wearing the first pair of glasses and the second pair of glasses, so that retinal cells periodically and alternately receive defocus stimulation and alternately rest and recover within a set time, and the problem that the myopia prevention and control efficacy is greatly weakened on the premise that human eyes have self-adaptability is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of myopia control lenses, and in particular to a gradient dynamic defocus lens. Background Technology

[0002] In existing technologies, myopia control lenses mostly employ a static defocus design, generating defocus signals by setting up a microlens array on the lens to slow down the progression of myopia. However, the human eye is adaptive, and long-term wear of static defocus lenses can lead to retinal tolerance to defocus stimulation, a phenomenon known as "static defocus saturation," significantly weakening the effectiveness of myopia control. Furthermore, the fixed microlens distribution pattern of traditional static defocus lenses cannot dynamically adapt to the defocusing needs during eye movement, resulting in limited defocus coverage and visual interference problems such as glare due to optical structural defects.

[0003] Therefore, the existing technology has problems and needs further improvement and development. Summary of the Invention

[0004] (I) Purpose of the invention: In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a gradient dynamic defocus lens to solve the problem of static defocus saturation of the retina.

[0005] (II) Technical Solution: In order to solve the above technical problems, this technical solution provides a progressive dynamic defocus lens, including a first group of lenses and a second group of lenses. Both the first group of lenses and the second group of lenses include a left lens and a right lens. Both the left lens and the right lens of the first group of lenses and the second group of lenses include a lens substrate, and both have a circular central optical area at the center, an annular defocus area around the central optical area, and an annular edge area around the defocus area on the surface of the lens substrate.

[0006] The microlens structures in the defocus areas of the left and right lenses of both the first and second lens groups are spiral-shaped; the spiral microlens structures of the left lenses of both the first and second lens groups rotate counterclockwise, while the spiral microlens structures of the right lenses of both the first and second lens groups rotate clockwise.

[0007] Furthermore, the defocus areas of the left and right lenses of the first and second lens groups are each provided with 12 groups of microlenses. Each group of microlenses has a spiral structure, and the 12 groups of microlenses are centrally symmetrical, with the center of symmetry coinciding with the center of the central optical area. Each group of microlenses includes 45 microconvex lenses. The 12 groups of microlenses of the left and right lenses of the first and second lens groups are divided into 6 odd groups and 6 even groups, with the odd and even groups being adjacent and alternating. Each group of microlenses includes 12 pairs of microconvex lenses.

[0008] Furthermore, the number of microlenses in each pair of the odd-numbered array from the center outwards is 1, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, and the number of microlenses in each pair of the even-numbered array from the center outwards is 2, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1.

[0009] Furthermore, a gap is provided between each pair of microlenses, and the diameter of the gap is equal to the diameter of the previous microlens.

[0010] Furthermore, the diameter of the first to 15th microlenses in each group of microlenses, from the center outwards, is 1.1 mm and the defocusing amount is 5.50D; the diameter of the 16th to 28th microlenses is 1.2 mm and the defocusing amount is 5.00D; and the diameter of the 29th to 45th microlenses is 1.3 mm and the defocusing amount is 4.50D.

[0011] Furthermore, the central optical zone diameter of the left and right lenses of both the first and second lens groups is 7.5 mm.

[0012] Furthermore, based on the structure of the right lens of the first group of lenses, the structure of the right lens of the second group of lenses is rotated at an angle of 30 degrees to the structure of the right lens of the first group of lenses, and the rotation direction is clockwise.

[0013] Furthermore, taking the structure of the right lens of the first set of lenses as a reference, the structure of the right lens of the first set of lenses is a mirror image of the structure of the left lens of the first set of lenses.

[0014] Furthermore, based on the structure of the left lens of the first group of lenses, the structure of the left lens of the second group of lenses is rotated at an angle of 30 degrees to the structure of the left lens of the first group of lenses, and the rotation direction is clockwise.

[0015] Furthermore, nano-lithographic dots are uniformly distributed in the edge and defocus areas of the left and right lenses of the first and second lens groups.

[0016] (III) Beneficial Effects: 1. This invention achieves dynamic defocus intervention through the periodic alternation of wearing a first pair of glasses and a second pair of glasses. This allows retinal cells to periodically receive defocus stimulation and then rest and recover within a set timeframe. The microlens arrays of the two pairs of glasses are rotated and misaligned by 30 degrees. After alternating wear, a dynamically changing defocus pattern is formed on the retina. This effectively solves the problem of defocus tolerance on the retina caused by long-term wear of statically controlled defocus lenses, i.e., static defocus saturation, which significantly weakens the effectiveness of myopia control. By periodically switching between different defocus modes, the peripheral defocus signal of the retina is continuously activated, thus improving the effectiveness of myopia control. Simultaneously, there are gaps between each pair of microconvex lenses in each group of microlenses. The periodic distribution of these gaps forms a diffraction structure similar to an "optical fence," which reduces light scattering from microlenses with high defocus levels. When viewing objects at night, the pupil diameter dilates, and the gap design significantly reduces glare, improving the wearer's nighttime visual quality.

[0017] 2. The two pairs of glasses in this invention feature a mirrored design: the left lens uses a counter-clockwise spiral, and the right lens uses a clockwise spiral. This design allows both eyes to receive symmetrical and oppositely directed defocus signals during saccades, correcting convergence conflict in binocular accommodation and reducing the risk of anisometropia. Simultaneously, the reverse spiral structures of the left and right eyes create reverse spiral compensation, enabling a "dynamic sweeping" effect in the defocus area during eye movement, thus improving the effective coverage of the defocus area. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the right spectacle lens of the first set of lenses of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the right spectacle lens of the second set of lenses of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the left spectacle lens of the first set of lenses of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the left lens of the second set of lenses of this utility model;

[0022] Figure 5 This is a superimposed image of the right eye formed after the first and second pairs of glasses are worn alternately in a periodic manner in this utility model.

[0023] Figure 6 This is a superimposed image of the left eye formed after the first and second pairs of glasses are worn alternately in a periodic manner in this utility model.

[0024] Figure 7 This is a schematic diagram of the nanolithography structure of this utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to preferred embodiments. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0026] The accompanying drawings are schematic diagrams of embodiments of the present invention. It should be noted that these drawings are for illustrative purposes only and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0027] A progressive dynamic defocus lens includes a first group of lenses and a second group of lenses. Both the first group of lenses and the second group of lenses include a left lens and a right lens. Both the left and right lenses of the first group of lenses and the second group of lenses include a lens substrate, and both have a circular central optical area at the center, an annular defocus area around the central optical area, and an annular edge area around the defocus area on the surface of the lens substrate.

[0028] The first and second lens groups each have 12 microlenses in their defocus areas on the left and right lenses. Each microlens group has a spiral structure and is centrally symmetrical, with the center of symmetry coinciding with the center of the central optical zone. Each microlens group includes 45 microconvex lenses. The spiral microlens structure on the left lens of both the first and second lens groups rotates counterclockwise, while the spiral microlens structure on the right lens of both groups rotates clockwise.

[0029] like Figure 7 As shown, nano-lithographic dots are uniformly distributed around the microconvex lenses in the edge and defocus areas of the left and right lenses of the first and second lens groups. These nano-lithographic dots are nanoscale scattering points formed on the surface of the lens substrate by photolithography. By combining nanolithography with multi-point defocusing technology, the astigmatism problem caused by second-order non-differentiability at the junction of the edge of the traditional multi-point microlens and the lens circle is solved. This technology can eliminate astigmatism interference to the greatest extent, achieve dual control of spherical and cylindrical lenses, achieve fogging effect, and effectively improve the level of myopia prevention and control.

[0030] This utility model provides another embodiment in which nano-lithographic dots are uniformly distributed on the micro-convex lenses of the edge area and defocus area of ​​the left and right lenses of the first and second lens groups, so that the nano-lithographic dots are superimposed and overlapped with the micro-convex lenses, thereby further enhancing the technical effect of fogging effect and multi-point defocus effect.

[0031] like Figure 1 As shown, the 12 microlenses in the left and right lenses of the first and second lens groups are divided into 6 odd-numbered groups and 6 even-numbered groups. The odd-numbered and even-numbered groups are adjacent and alternate. Each group of microlenses includes 12 pairs of microconvex lenses. The number of microconvex lenses in each pair of the odd-numbered groups from the center outwards is 1, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 2, 3, 3, 3, 2, 2, 2, 2, 2, 1 ...1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, The diameter of the first 15 microlenses in each group of microlenses, from the center outwards, is 1.1 mm with a defocus of 5.50D; the diameter of the 16th to 28th microlenses is 1.2 mm with a defocus of 5.00D; and the diameter of the 29th to 45th microlenses is 1.3 mm with a defocus of 4.50D. The diameter of the central optical zone of the left and right lenses in both the first and second groups is 7.5 mm.

[0032] like Figure 2 As shown, the right lens structure of the first lens group is obtained by rotating it 30 degrees clockwise, based on the right lens structure of the first lens group. Specifically, the right lens structure of the second lens group is rotated at a 30-degree angle to the right lens structure of the first lens group, and the rotation direction is clockwise. The microlens distribution and parameters of the right lenses of the first and second lens groups are consistent.

[0033] like Figure 3 As shown, the left lens of the first group of lenses is obtained by mirroring the right lens of the first group of lenses. That is, the structure of the right lens of the first group of lenses is a mirror image of the structure of the left lens of the first group of lenses. The microlens distribution and parameters of the right lens of the first group of lenses are consistent with those of the left lens of the first group of lenses.

[0034] like Figure 4 As shown, the left lens structure of the first lens group is used as a reference, and the left lens structure of the second lens group is obtained by rotating it 30 degrees clockwise. That is, the left lens structure of the second lens group is rotated at a 30-degree angle to the left lens structure of the first lens group, and the rotation direction is clockwise. The microlens distribution and parameters of the left lenses of the first and second lens groups are consistent.

[0035] The right and left lenses of the first set of lenses are applied to the right and left eyes of the first pair of glasses, respectively. Similarly, the right and left lenses of the second set of lenses are applied to the right and left eyes of the second pair of glasses. The first and second pairs of glasses are worn alternately periodically according to a preset time threshold. This periodic alternation creates the following effect: Figure 5 , 6 The superimposed images of the left and right eyes show that, in the superimposed effect, each group of microlenses in the left and right eyes complements each other to form a complete and evenly distributed spiral structure.

[0036] In this invention, dynamic defocus intervention is achieved through the periodic alternation of wearing a first pair of glasses and a second pair of glasses. This allows retinal cells to periodically receive defocus stimulation and then rest and recover within a set timeframe. The microlens arrays of the two pairs of glasses are rotated and misaligned by 30 degrees. After alternating wear, a dynamically changing defocus pattern is formed on the retina. This effectively solves the problem of defocus tolerance developing on the retina from prolonged wear of statically controlled defocus lenses, even with the eye's self-adaptive capabilities—namely, static defocus saturation and a significant reduction in myopia control effectiveness. By periodically switching between different defocus modes, the peripheral defocus signals of the retina are continuously activated, thus enhancing myopia control effectiveness. Simultaneously, gaps are provided between each pair of microlenses in each group of microlenses. The periodic distribution of these gaps forms a diffraction structure similar to an "optical fence," reducing light scattering from microlenses with high defocus levels. During nighttime vision, the pupil diameter dilates, and the gap design significantly reduces glare, improving the wearer's nighttime visual quality.

[0037] In this invention, the left lens of both pairs of glasses features a counter-clockwise spiral design, while the right lens features a clockwise spiral design. This allows both eyes to receive symmetrical and oppositely directed defocus signals during saccades, correcting convergence conflict in binocular accommodation and reducing the risk of anisometropia. Simultaneously, the reverse spiral structures of the left and right eyes create reverse spiral compensation, enabling a "dynamic sweeping" effect in the defocus area during eye movement, thus improving the effective coverage of the defocus area.

[0038] The above description illustrates preferred embodiments of the present invention and helps those skilled in the art to more fully understand the technical solution of the present invention. However, these embodiments are merely illustrative and should not be construed as limiting the specific implementation of the present invention to these embodiments. For those skilled in the art, several simple deductions and modifications can be made without departing from the concept of the present invention, and all such modifications should be considered to fall within the protection scope of the present invention.

Claims

1. A graduated dynamic defocus lens, comprising a first group of lenses and a second group of lenses, characterized in that, Both the first group of lenses and the second group of lenses include a left lens and a right lens. Both the left and right lenses of the first group of lenses and the second group of lenses include a lens base, and both have a circular central optical area at the center, an annular defocus area around the central optical area, and an annular edge area around the defocus area on the surface of the lens base. The microlens structures in the defocus areas of the left and right lenses of both the first and second lens groups are spiral-shaped; the spiral microlens structures of the left lenses of both the first and second lens groups rotate counterclockwise, while the spiral microlens structures of the right lenses of both the first and second lens groups rotate clockwise.

2. The graduated dynamic defocus lens according to claim 1, characterized in that, The first and second lens groups each have 12 microlenses in the defocus area of ​​the left and right lenses. Each microlens group has a spiral structure and is centrally symmetrical, with the center of symmetry coinciding with the center of the central optical area. Each microlens group includes 45 microconvex lenses. The 12 microlenses in the left and right lenses of the first and second lens groups are divided into 6 odd-numbered groups and 6 even-numbered groups. The odd-numbered and even-numbered groups are adjacent and alternate with each other. Each microlens group includes 12 pairs of microconvex lenses.

3. A graduated dynamic defocus lens according to claim 2, characterized in that, The number of microlenses in each pair of the odd-numbered array from the center outwards is 1, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, and the number of microlenses in each pair of the even-numbered array from the center outwards is 2, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1.

4. A graduated dynamic defocus lens according to claim 3, characterized in that, There is a gap between each pair of microlenses, and the diameter of the gap is equal to the diameter of the previous microlens.

5. A graduated dynamic defocus lens according to claim 2, characterized in that, The diameter of the first 15 microlenses in each group of microlenses, from the center outwards, is 1.1 mm and the defocusing amount is 5.50D; the diameter of the 16th to 28th microlenses is 1.2 mm and the defocusing amount is 5.00D; and the diameter of the 29th to 45th microlenses is 1.3 mm and the defocusing amount is 4.50D.

6. A graduated dynamic defocus lens according to claim 1, characterized in that, The diameter of the central optical zone of the left and right lenses in both the first and second lens groups is 7.5 mm.

7. A graduated dynamic defocus lens according to claim 1, characterized in that, Based on the structure of the right lens of the first group of lenses, the structure of the right lens of the second group of lenses is rotated at an angle of 30 degrees to the structure of the right lens of the first group of lenses, and the rotation direction is clockwise.

8. A graduated dynamic defocus lens according to claim 1, characterized in that, Based on the structure of the right lens of the first group of lenses, the structure of the right lens of the first group of lenses is a mirror image of the structure of the left lens of the first group of lenses.

9. A graduated dynamic defocus lens according to claim 1, characterized in that, Based on the structure of the left lens of the first group of lenses, the structure of the left lens of the second group of lenses is rotated at an angle of 30 degrees to the structure of the left lens of the first group of lenses, and the rotation direction is clockwise.

10. A graduated dynamic defocus lens according to claim 1, characterized in that, Nanoscale photolithography dots are evenly distributed in the edge and defocus areas of the left and right lenses of the first and second lens groups.

Images