Dynamic defocus lens ophthalmic lens

Abstract

The utility model relates to a dynamic out-of-focus lens ophthalmic lens, and belongs to the technical field of lens preparation. Comprising a first lens and a second lens, the first lens and the second lens respectively comprise a first lens substrate and a second lens substrate, and the circle centers of the surfaces of the first lens substrate and the second lens substrate are respectively provided with a first optical correction area and a second optical correction area. A first annular lens dynamic defocusing area and a second annular lens dynamic defocusing area are arranged on the periphery of the first optical correction area and the periphery of the second optical correction area respectively, and the first lens dynamic defocusing area and the second lens dynamic defocusing area are each composed of a first micro lens and a second micro lens which are of a multi-circle concentric ring structure. And the first micro lens and the second micro lens have the same structure.

Description

Technical Field

[0001] This utility model relates to a dynamic defocusing ophthalmic lens, belonging to the field of lens manufacturing technology. Background Technology

[0002] Currently, most peripheral defocus-based optical lenses have a relatively large transparent optical zone (8-9mm) in the central area. This is to ensure that the wearer can obtain clear vision when looking straight ahead in the primary eye position. However, existing research shows that the effect of peripheral defocus is related to the defocus position of the retina. The closer to the fovea region of the macula, the higher the weight and the better the effect. Correspondingly, the central optical zone of the lens should be smaller. The existing 8-9mm central transparent zone has the potential to be further reduced, and the corresponding central defocus filling rate will be improved.

[0003] Existing defocus lenses exhibit a decline in control effectiveness after 1-2 years of wear, similar to a "tolerance phenomenon." This is likely due to the constant defocus amount, leading to adaptation of the retinal photoreceptors over time. The discovery of defocus tolerance suggests that current myopia control lenses, with their fixed defocus point, develop defocus tolerance with prolonged wear.

[0004] In view of the above-mentioned shortcomings, the designer has actively conducted research and innovation in order to create a dynamic defocusing ophthalmic lens that has greater industrial application value. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a dynamic defocusing ophthalmic lens.

[0006] This utility model discloses a dynamic defocusing ophthalmic lens, comprising two lenses: a first lens and a second lens. The first and second lenses each include a first lens substrate and a second lens substrate, respectively. A first optical correction area and a second optical correction area are respectively located at the center of the surface of the first and second lens substrates. Circular dynamic defocusing areas for the first and second lenses are respectively located around the first and second optical correction areas, each consisting of multiple concentric rings. The structure consists of a first microlens and a second microlens. Both microlenses have identical structures, each with 18 rings, totaling 708 microlenses. The distribution of microlenses from the inside out is as follows: Rings 1-2, averaged 12 groups, 1 microlens per group; Rings 3-6, averaged 12 groups, 2 microlenses per group; Rings 7-10, averaged 12 groups, 3 microlenses per group; Rings 11-14, averaged 12 groups, 4 microlenses per group; Rings 15-17, averaged 12 groups, 5 microlenses per group; Ring 18, averaged 12 groups, 6 microlenses per group. Within a 4mm diameter area centered on any of the first or second microlenses, the light-gathering patterns formed by the microlenses and the added light intensity are different at every point. During eye movement, the retina always receives stimulation from different defocus patterns, preventing the photoreceptor cells from being stimulated by the same intensity for a long time, thus avoiding fatigue.

[0007] Furthermore, the defocusing amount of the first microlens is 4.50D, and the defocusing amount of the second microlens is 3.50D.

[0008] Furthermore, the off-axis radii of each ring of the first and second lens dynamic defocus areas, from the inside out, are 4.05, 5.15, 6.25, 7.35, 8.45, 9.55, 10.65, 11.75, 12.85, 13.95, 15.05, 16.15, 17.25, 18.35, 19.45, 20.55, 21.65, and 22.75 mm, respectively.

[0009] Furthermore, the diameter of the first lens substrate and the second lens substrate is 70 mm, the Abbe number is 31, the refractive index is 1.586, and the center thickness is 1.5 to 2.0 mm.

[0010] Furthermore, the diameters of the dynamic defocusing areas of the first and second lenses are 45.5 mm.

[0011] Furthermore, the diameters of the first optical correction area and the second optical correction area are 7 mm.

[0012] By means of the above-described solution, the present invention has at least the following advantages:

[0013] In practical use, the two lenses are worn alternately: after wearing the first lens for 2-4 weeks, the second lens is worn. Both lenses are marked with angles. When wearing the second lens, it is rotated 45°. Ultimately, the two lenses form two different types, arranged alternately and completely complementary. Retinal cells receive defocus stimulation at different times, and take turns resting and recovering. In addition, within a 4mm diameter area centered on either the first or second microlens, the light-gathering pattern formed by the microlens and the added light intensity is different everywhere. During eye movements, the retina can always receive stimulation from different defocus patterns, avoiding the visual cells being stimulated by the same intensity for a long time, thus preventing fatigue.

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the first lens in the dynamic defocusing ophthalmic lens of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the second lens in the dynamic defocusing ophthalmic lens of this utility model;

[0018] Figure 3 This is a magnified view of a 4mm diameter area centered on the first or second microlens in the dynamic defocusing ophthalmic lens of this utility model.

[0019] Figure 4 This is a schematic diagram of the defocus area when the first and second lenses are combined in the dynamic defocusing lens ophthalmic lens of this utility model.

[0020] In the figure:

[0021] 1. First lens; 2. Second lens;

[0022] 11. First lens substrate; 12. First lens dynamic defocus zone; 13. First optical correction zone;

[0023] 121. First microlens;

[0024] 21. Second lens substrate; 22. Second lens dynamic defocus zone; 23. Second optical correction zone;

[0025] 221. Second microlens. Detailed Implementation

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See Figure 1 and Figure 2 A preferred embodiment of the present invention describes a dynamic defocusing ophthalmic lens, characterized in that it comprises two lenses: a first lens 1 and a second lens 2. The first lens 1 and the second lens 2 respectively include a first lens substrate 11 and a second lens substrate 21. A first optical correction area 13 and a second optical correction area 23 are respectively provided at the center of the surface of the first lens substrate 11 and the second lens substrate 21. Circular dynamic defocusing areas 12 and 22 are respectively provided around the first optical correction areas 13 and the second optical correction areas 23. The dynamic defocusing areas 12 and 22 of the first lens are... The defocusing region 22 is composed of a first microlens 121 and a second microlens 221 with a multi-ring concentric structure. The first microlens 121 and the second microlens 221 have the same structure, each with 18 rings, totaling 708 microlenses. The distribution of the microlenses from the inside out is as follows: Rings 1-2, divided into 12 groups, 1 microlens per group; Rings 3-6, divided into 12 groups, 2 microlenses per group; Rings 7-10, divided into 12 groups, 3 microlenses per group; Rings 11-14, divided into 12 groups, 4 microlenses per group; Rings 15-17, divided into 12 groups, 5 microlenses per group; Ring 18, divided into 12 groups, 6 microlenses per group; see [link to relevant documentation]. Figure 3 Centered on either the first microlens 121 or the second microlens 221, within a 4mm diameter area, the light-adding patterns formed by the microlenses and the added light intensity are different at every point. During eye movement, the retina can always receive stimulation from different defocus patterns, avoiding long-term stimulation of the photoreceptor cells with the same intensity, thus preventing fatigue.

[0028] The defocusing amount of the first microlens 121 is 4.50D, and the defocusing amount of the second microlens 221 is 3.50D;

[0029] The off-axis radii of each ring from the inside to the outside of the first lens dynamic defocus area 12 and the second lens dynamic defocus area 22 are 4.05, 5.15, 6.25, 7.35, 8.45, 9.55, 10.65, 11.75, 12.85, 13.95, 15.05, 16.15, 17.25, 18.35, 19.45, 20.55, 21.65, and 22.75 mm, respectively.

[0030] The diameter of the first lens substrate 11 and the second lens substrate 21 is 70 mm, the Abbe number is 31, the refractive index is 1.586, and the center thickness is 1.5 to 2.0 mm.

[0031] The diameters of the first lens dynamic defocus area 12 and the second lens dynamic defocus area 22 are 45.5 mm;

[0032] The diameters of the first optical correction area 13 and the second optical correction area 23 are 7 mm;

[0033] The working principle of this utility model is as follows:

[0034] See Figure 4 In practical use, this invention involves alternating between two lenses: after wearing the first lens 1 for 2-4 weeks, the second lens 2 is worn. Both lenses are marked with angles, and the second lens 2 is rotated 45° when worn. Ultimately, the two lenses form two different types, arranged alternately and completely complementary. Retinal cells receive defocus stimulation at different times, allowing for alternating rest and recovery. Furthermore, within a 4mm diameter area centered on either the first microlens 121 or the second microlens 221, the light-gathering patterns formed by the microlenses and the added light intensity are different at every point. During eye movements, the retina always receives stimulation from different defocus patterns, preventing visual cells from being stimulated by the same intensity for a long time, thus avoiding fatigue.

[0035] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dynamic defocusing ophthalmic lens, characterized in that: The system comprises two lenses: a first lens and a second lens. Each lens includes a first lens substrate and a second lens substrate. At the center of the surface of each substrate are a first optical correction area and a second optical correction area, respectively. Surrounding these areas are circular dynamic defocusing areas for the first and second lenses, respectively. Each dynamic defocusing area is composed of a first microlens and a second microlens with a multi-ring concentric structure. The first and second microlenses have identical structures, each consisting of 18 rings, totaling 708 microlenses. The distribution of microlenses from the inside out is as follows: Rings 1-2, averaged 12 groups, 1 microlens per group; Rings 3-6, averaged 12 groups, 2 microlenses per group; Rings 7-10, averaged 12 groups, 3 microlenses per group; Rings 11-14, averaged 12 groups, 4 microlenses per group; Rings 15-17, averaged 12 groups, 5 microlenses per group; Ring 18, averaged 12 groups, 6 microlenses per group.

2. The dynamic defocusing ophthalmic lens according to claim 1, characterized in that: The first microlens has a defocusing depth of 4.50D, and the second microlens has a defocusing depth of 3.50D.

3. The dynamic defocusing ophthalmic lens according to claim 1, characterized in that: The off-axis radii of each ring of the first and second lens dynamic defocus zones, from the inside out, are 4.05, 5.15, 6.25, 7.35, 8.45, 9.55, 10.65, 11.75, 12.85, 13.95, 15.05, 16.15, 17.25, 18.35, 19.45, 20.55, 21.65, and 22.75 mm, respectively.

4. The dynamic defocusing ophthalmic lens according to claim 1, characterized in that: The diameter of the first and second lens substrates is 70 mm, the Abbe number is 31, the refractive index is 1.586, and the center thickness is 1.5 to 2.0 mm.

5. The dynamic defocusing ophthalmic lens according to claim 1, characterized in that: The diameters of the dynamic defocusing areas of the first and second lenses are 45.5 mm.

6. The dynamic defocusing ophthalmic lens according to claim 1, characterized in that: The diameter of the first optical correction area and the second optical correction area is 7mm.

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