Myopia prevention and control glasses

Abstract

The invention relates to myopia prevention and control glasses which comprise a glasses frame, lenses, a defocus film and an angle adjusting assembly. The lenses are rotatably mounted on the spectacle frame, and the out-of-focus films are attached to the sides, back to eyes, of the lenses; the angle adjusting assembly is mounted on the spectacle frame and is in transmission connection with the lenses so as to drive the lenses to rotate around the vertical axes of the lenses; a refraction correction area, a positive defocus area, a negative defocus area and two low-contrast areas are arranged in the middle of the defocus film; the dioptric correction area is located in the center of the defocus film, the positive defocus area and the negative defocus area are located on the two sides of the dioptric correction area, the two low-contrast areas are located above and below the dioptric correction area respectively, and the myopia prevention and control effect and the wearing experience are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a pair of myopia prevention and control glasses. Background Art

[0002] At present, myopia is a major public health problem worldwide, especially among young people. Studies have shown that myopia not only affects the quality of vision, but also increases the risk of serious eye diseases such as retinal detachment, macular degeneration and glaucoma. Traditional myopia prevention and control glasses mostly use a single refractive correction principle, which can only correct vision, but cannot effectively control the progression of myopia from the physiological mechanism of myopia development.

[0003] At present, with the in-depth study of the causes of myopia, it is found that peripheral retinal defocus is an important factor in the development of myopia. However, the distribution and design of the defocus area of ​​existing defocus glasses are not reasonable enough, making it difficult to accurately control the defocus amount, affecting the prevention and control effect. At the same time, the eyes see objects at different angles in different scenes, and the existing glasses have fixed angles, which cannot meet diverse needs and are difficult to achieve the best myopia prevention and control purpose.

[0004] Therefore, there is an urgent need for myopia prevention and control glasses that can more effectively prevent and control myopia and can be flexibly adjusted to meet actual usage needs. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a pair of myopia prevention and control glasses, which solves the technical problem that the prior art has poor myopia prevention and control effect.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] The present invention provides a myopia prevention and control glasses, comprising a glasses frame, a lens, a defocusing film and an angle adjustment component; the lens is rotatably mounted on the glasses frame, and the defocusing film is attached to the side of the lens facing away from the eyes; the angle adjustment component is mounted on the glasses frame, and the angle adjustment component is transmission-connected to the lens to drive the lens to rotate around its vertical axis; a refractive correction area, a positive defocusing area, a negative defocusing area and two low-contrast areas are arranged in the middle of the defocusing film; the refractive correction area is located at the center of the defocusing film, the positive defocusing area and the negative defocusing area are located on both sides of the refractive correction area, and the two low-contrast areas are respectively located above and below the refractive correction area.

[0010] Optionally, the angle adjustment assembly includes a handle shaft, a driving gear, a rotating shaft, a ratchet, a driven gear, a braking pawl and a torsion spring; the lens is rotatably mounted on the glasses frame via the rotating shaft; the ratchet and the driven gear are arranged on the rotating shaft, the braking pawl is installed in the glasses frame via a torsion spring, and the braking pawl abuts against the tooth groove of the ratchet; the handle shaft is rotatably passed through an opening at the bottom of the glasses frame, and the operating end of the handle shaft is located outside the glasses frame; the driving gear is arranged on the handle shaft, and the driving gear and the driven gear are transmission connected.

[0011] Optionally, an anti-backlash component is provided in the eyeglass frame; the anti-backlash component includes a static pressure ring and a plurality of ball bearings; the handle shaft is rotatably passed through the static pressure ring; a sliding groove is provided on the inner side of the static pressure ring along its circumference, and a plurality of ball bearings are arranged in the sliding groove; a static pressure oil chamber is formed between the sliding groove and the handle shaft, and the static pressure oil chamber is filled with lubricating oil.

[0012] Optionally, the inner diameter of the static pressure ring is larger than the diameter of the handle shaft; and a sealing ring is provided on the handle shaft.

[0013] Optionally, the areas of the positive defocus area, the negative defocus area and the low contrast area are the same.

[0014] Optionally, the positive defocus area includes multiple first microlenses; the multiple first microlenses are arranged in a fan-shaped ring shape, and the sizes of the multiple first microlenses gradually decrease from the center to the edge, and the arrangement density of the multiple first microlenses gradually increases; the defocus amount of the first microlenses is +2.50D to +4.50D.

[0015] Optionally, the negative defocus area includes a plurality of second microlenses; the plurality of second microlenses are arranged in a fan-shaped ring shape, and the sizes of the plurality of second microlenses gradually decrease from the center to the edge, and the arrangement density of the plurality of second microlenses gradually increases; the defocus amount of the second microlenses is -1.00D to -2.75D.

[0016] Optionally, the first microlens is circular in shape; the second microlens is elliptical in shape, and the major axis direction thereof extends along the radial direction of the negative defocus area.

[0017] Optionally, the low contrast area includes a plurality of third microlenses and a plurality of fourth microlenses; the plurality of third microlenses and the plurality of fourth microlenses are alternately arranged one by one to form a fan-shaped low contrast area; and the spacing between the third microlenses and the fourth microlenses gradually decreases from the center to the edge.

[0018] Optionally, the defocus amount of the third microlens is +1.00D to +2.50D; and the defocus amount of the fourth microlens is -1.00D to -1.75D.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a kind of myopia prevention and control, the refractive correction area in the center of the defocus film is responsible for clear imaging to meet daily vision needs; the positive and negative defocus areas on both sides are based on the retinal defocus principle, accurately regulating the peripheral defocus state, effectively inhibiting the abnormal growth of the eye axis, and preventing and controlling myopia from the root. The upper and lower low-contrast areas stimulate visual cells, enhance visual sensitivity, and comprehensively improve the myopia prevention and control effect. The angle adjustment component can flexibly adjust the angle of the lens around its vertical axis according to different visual scenes to ensure that the defocus film can always adapt to the eye's line of sight at the best angle, so that the refractive correction area, positive defocus area, negative defocus area and low-contrast area on the defocus film can always correspond to the visual needs of different areas of the eye, strengthen the defocus film's regulatory effect on peripheral retinal defocus, ensure central vision clarity, and effectively prevent and control myopia, greatly improve visual comfort and myopia prevention and control effect. Compared with the prior art, the myopia prevention and control effect and wearing experience are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a pair of myopia prevention and control glasses according to Example 1 of the present invention;

[0023] Figure 2 is a structural exploded diagram of the angle adjustment assembly of Embodiment 1 of the present invention;

[0024] Figure 3 It is a front schematic diagram of the defocusing film of Example 1 of the present invention.

[0025] [Description of Reference Numerals]

[0026] 1: glasses frame; 2: lenses; 3: defocus film; 31: refractive correction area; 32: positive defocus area; 33: negative defocus area; 34: low contrast area; 41: handle; 42; driving gear; 43: rotating shaft; 44: ratchet; 45: passive gear; 46: brake pawl. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0028] Embodiment 1:

[0029] like Figure 1-Figure 3As shown, a specific embodiment of the present invention provides a myopia prevention and control glasses, including a glasses frame 1, a lens 2, a defocus film 3 and an angle adjustment assembly; the lens 2 is rotatably mounted on the glasses frame 1, and the defocus film 3 is attached to the side of the lens 2 facing away from the eyes; the angle adjustment assembly is mounted on the glasses frame 1, and the angle adjustment assembly is transmission-connected to the lens 2 to drive the lens 2 to rotate around its vertical axis; a refractive correction area 31, a positive defocus area 32, a negative defocus area 33 and two low-contrast areas 34 are provided in the middle of the defocus film 3; the refractive correction area 31 is located at the center of the defocus film 3, the positive defocus area 32 and the negative defocus area 33 are located on both sides of the refractive correction area 31, and the two low-contrast areas 34 are respectively located above and below the refractive correction area.

[0030] Specifically, the refractive correction area 31 in the center of the defocus film 3 is responsible for clear imaging to meet daily vision needs; the positive and negative defocus areas 33 on both sides accurately control the peripheral defocus state based on the retinal defocus principle, effectively inhibit the abnormal growth of the eye axis, and prevent and control myopia from the root. The upper and lower low-contrast areas 34 stimulate visual cells, enhance visual sensitivity, and comprehensively improve the myopia prevention and control effect. Through the angle adjustment component, the angle of the lens 2 around its vertical axis can be flexibly adjusted according to different visual scenes to ensure that the defocus film 3 can always adapt to the eye's line of sight at the best angle, so that the refractive correction area 31, positive defocus area 32, negative defocus area 33 and low-contrast area 34 on the defocus film 3 can always correspond to the visual needs of different areas of the eye, and strengthen the defocus film 3. The regulatory effect of the peripheral retinal defocus, not only ensures clear central vision, but also effectively prevents and controls myopia, greatly improving visual comfort and myopia prevention and control effects. Compared with the existing technology, the myopia prevention and control effect and wearing experience have been significantly improved.

[0031] Furthermore, if Figure 1 and Figure 2 As shown, the angle adjustment assembly includes a stem 41, a driving gear 42, a rotating shaft 43, a ratchet 44, a driven gear 45, a braking pawl 46 and a torsion spring; the lens 2 is rotatably mounted on the spectacle frame 1 through the rotating shaft 43; the ratchet 44 and the driven gear 45 are arranged on the rotating shaft 43, the braking pawl 46 is installed in the spectacle frame 1 through the torsion spring, and the braking pawl 46 abuts against the tooth groove of the ratchet 44; the stem 41 is rotatably penetrated through the opening at the bottom of the spectacle frame 1, and the operating end of the stem 41 is located outside the spectacle frame 1; the driving gear 42 is arranged on the stem 41, and the driving gear 42 and the driven gear 45 are connected by transmission. When the angle needs to be adjusted, the stem 41 is rotated, and the driving gear 42 drives the driven gear 45 to rotate, thereby rotating the lens 2 on the rotating shaft 43. Under the elastic force of the torsion spring, the braking pawl 46 tightly abuts against the tooth groove of the ratchet 44, and the two work together to form a reliable one-way locking mechanism. Once the lens 2 is adjusted to a suitable angle, this mechanism can ensure that the lens 2 remains stable and motionless, effectively avoiding visual interference caused by the shaking of the lens 2, and providing the user with a stable visual experience at all times.

[0032] Furthermore, in this embodiment, a clearance elimination component is provided in the eyeglass frame 1; the clearance elimination component includes a static pressure ring and a plurality of balls; the stem 41 is rotatably inserted into the static pressure ring; a slide groove is provided on the inner side of the static pressure ring along its circumference, and a plurality of balls are arranged in the slide groove; a static pressure oil chamber is formed between the slide groove and the stem 41, and the static pressure oil chamber is filled with lubricating oil. When the stem 41 rotates, the lubricating oil forms an oil film with a certain pressure between the stem 41 and the static pressure oil chamber, which has a certain elasticity and fluidity. The oil film wraps the balls, so that the balls can play a supporting and rolling role between the shaft and the inner wall of the oil chamber. When a gap appears between the driving gear 42 and the driven gear, causing the stem 41 to deviate, the oil film on the deviated side of the stem 41 will be squeezed, the pressure will increase, and the pressure of the oil film on the other side will decrease. Due to the elasticity of the oil film, the oil film on the compressed side will generate a reverse thrust, trying to return the stem 41 to the center position. At the same time, the fluidity of the oil film enables the lubricating oil to flow from the high-pressure area to the low-pressure area under the action of the pressure difference. The flow of this oil film will generate a force on the handle shaft 41 in the opposite direction of the offset, thereby preventing the handle shaft 41 from further offset. During the continuous meshing process of the driving gear 42 and the driven gear 45, the oil film continuously adjusts its own pressure distribution and shape according to the position change of the shaft, which plays a role in suppressing the accumulation of offset. Wrapped in the oil film, the balls can roll freely in the grooves on the inner wall of the oil chamber. When the offset of the handle shaft 41 causes the oil film pressure difference to occur, the balls on the side with higher pressure will receive a greater thrust, thereby rolling to the side with lower pressure (i.e., the gap side). As the balls roll, they will gradually fill the larger gap between the handle shaft 41 and the inner wall of the oil chamber caused by the shaft offset, so that the deflection force on the handle shaft 41 is gradually reduced, and then the handle shaft 41 is restored to its original center position, and the meshing between the driving gear 42 and the driven gear 45 is restored to normal.

[0033] Furthermore, in this embodiment, the inner diameter of the static pressure ring is larger than the diameter of the handle 41, which reserves sufficient space for the rotation of the handle 41; a sealing ring is provided on the handle 41, which can effectively prevent the leakage of lubricating oil in the static pressure oil chamber, ensuring that the static pressure oil chamber is always in a good working condition. In this embodiment, the sealing ring is a lip-shaped sealing ring, and the handle 41 can rotate freely under the lip of the lip-shaped sealing ring. The lip only plays a role in preventing the leakage of lubricating oil, but does not limit the rotational freedom of the handle 41.

[0034] Furthermore, if Figure 3 As shown, the areas of the positive defocus area 32, the negative defocus area 33 and the low contrast area 34 are the same. This ensures that the visual stimulation of each area on the retina of the eye and the myopia prevention and control effect are relatively balanced. The three areas cooperate with each other to prevent and control myopia in all directions from multiple dimensions, effectively avoiding the adverse effects on the overall myopia prevention and control effect caused by the imbalance of the area of ​​a certain area.

[0035] Furthermore, in the present embodiment, the positive defocus area 32 includes a plurality of first microlenses; the plurality of first microlenses are arranged in a fan-shaped ring shape, and the size of the plurality of first microlenses gradually decreases from the center to the edge, and the arrangement density of the plurality of first microlenses gradually increases; thus, according to the different requirements of the peripheral retina of the eye for the defocus amount, the precise targeted distribution of the positive defocus amount can be achieved, thereby more effectively stimulating the peripheral area of ​​the retina and effectively inhibiting the abnormal growth of the eye axis. Specifically, the defocus amount of the first microlens is +2.50D to +4.50D. This defocus amount can not only ensure the visual comfort of the user during wearing, but also give full play to its role in preventing and controlling myopia, providing users with a myopia prevention and control solution that is both comfortable and effective.

[0036] Furthermore, in the present embodiment, the negative defocus zone 33 includes a plurality of second microlenses; the plurality of second microlenses are arranged in a fan-shaped ring, and the size of the plurality of second microlenses gradually decreases from the center to the edge, and the arrangement density of the plurality of second microlenses gradually increases; the negative defocus zone 33 and the positive defocus zone 32 are symmetrical and complementary to each other, and can accurately regulate the defocus state of the peripheral retina, work together from different angles, and jointly inhibit the growth of the eye axis, which significantly improves the comprehensiveness and effectiveness of myopia prevention and control. Specifically, the defocus amount of the second microlens is -1.00D to -2.75D. In this way, the development of myopia can be effectively controlled accurately, and it cooperates with the positive defocus zone 32 to act on the peripheral area of ​​the retina, providing solid technical support for myopia prevention and control.

[0037] Furthermore, in the present embodiment, the shape of the first microlens is circular, which is conducive to the uniform distribution of the positive defocus amount in the positive defocus area 32, and can fully meet the stimulation requirements of the positive defocus area 32 on the retina; the shape of the second microlens is elliptical, and its major axis direction extends radially along the negative defocus area 33, which can better adapt to the regulation requirements of the negative defocus area 33 on the retina, thereby optimizing the negative defocus effect and further improving the overall effectiveness of myopia prevention and control.

[0038] Further, in the present embodiment, the low contrast area 34 includes a plurality of third microlenses and a plurality of fourth microlenses; the plurality of third microlenses and the plurality of fourth microlenses are arranged alternately one by one to form a fan-shaped low contrast area 34; from the center to the edge, the spacing between the third microlenses and the fourth microlenses gradually decreases, which can alternately stimulate the visual system, effectively enhance the transmission efficiency of visual signals, significantly improve visual sensitivity, and provide a powerful auxiliary effect for myopia prevention and control. Specifically, the defocus of the third microlens is +1.00D to +2.50D; the defocus of the fourth microlens is -1.00D to -1.75D, so that the low contrast area 34 can accurately stimulate the visual system, effectively assisting myopia prevention and control, while avoiding the negative impact on visual effects and myopia prevention and control due to excessive or too small defocus.

[0039] Embodiment 2:

[0040] This embodiment provides a pair of myopia prevention and control glasses, including all the structures of the myopia prevention and control glasses described in Example 1.

[0041] In this embodiment, a small sensor is integrated on the glasses frame 1 to monitor the user's eye usage time, blinking frequency, eye fatigue and other data in real time. When it is detected that the user uses the eyes for too long or has eye fatigue, the built-in vibration module and voice prompt function are used to remind the user to take a rest in time to prevent myopia from getting worse. At the same time, the data collected by the sensor is synchronized to the user's mobile phone APP via Bluetooth. The APP analyzes the data, generates a user's eye habit report, and provides personalized myopia prevention and control suggestions, such as reasonable eye time planning, eye exercise methods, etc.

[0042] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pair of myopia prevention and control glasses, characterized in that: It comprises a spectacle frame (1), a lens (2), a defocusing film (3) and an angle adjustment component; The lens (2) is rotatably mounted on the spectacle frame (1), and the defocusing film (3) is attached to the side of the lens (2) facing away from the eyes; the angle adjustment component is mounted on the spectacle frame (1), and the angle adjustment component is transmission-connected to the lens (2) to drive the lens (2) to rotate around its vertical axis; The middle part of the defocus film (3) is provided with a refractive correction area (31), a positive defocus area (32), a negative defocus area (33) and two low-contrast areas (34); The refractive correction area (31) is located at the center of the defocus film (3), the positive defocus area (32) and the negative defocus area (33) are located on both sides of the refractive correction area (31), and the two low-contrast areas (34) are respectively located above and below the refractive correction area.

2. The myopia prevention and control glasses according to claim 1, characterized in that: The angle adjustment assembly comprises a handle shaft (41), a driving gear (42), a rotating shaft (43), a ratchet wheel (44), a driven gear (45), a braking pawl (46) and a torsion spring; The lens (2) is rotatably mounted on the eyeglass frame (1) via a rotating shaft (43); a ratchet (44) and a driven gear (45) are arranged on the rotating shaft (43); a braking pawl (46) is mounted in the eyeglass frame (1) via a torsion spring; and the braking pawl (46) abuts against a tooth groove of the ratchet (44); The handle shaft (41) is rotatably inserted into an opening at the bottom of the spectacle frame (1), and the operating end of the handle shaft (41) is located outside the spectacle frame (1); the driving gear (42) is arranged on the handle shaft (41), and the driving gear (42) and the driven gear (45) are transmission-connected.

3. The myopia prevention and control glasses according to claim 2, characterized in that: A backlash-eliminating component is arranged inside the eyeglass frame (1); The anti-backlash assembly includes a static pressure ring and a plurality of balls; The handle shaft (41) is rotatably inserted into the static pressure ring; a slide groove is provided on the inner side of the static pressure ring along its circumference, and a plurality of balls are arranged in the slide groove; a static pressure oil chamber is formed between the slide groove and the handle shaft (41), and the static pressure oil chamber is filled with lubricating oil.

4. The myopia prevention and control glasses according to claim 3, characterized in that: The inner diameter of the static pressure ring is larger than the diameter of the handle shaft (41); A sealing ring is arranged on the handle shaft (41).

5. The myopia prevention and control glasses according to claim 1, characterized in that: The areas of the positive defocus area (32), the negative defocus area (33) and the low contrast area (34) are the same.

6. The myopia prevention and control glasses according to claim 1, characterized in that: The positive defocusing area (32) includes a plurality of first micro lenses; The plurality of first micro lenses are arranged in a fan-shaped ring shape, and the sizes of the plurality of first micro lenses gradually decrease from the center to the edge, and the arrangement density of the plurality of first micro lenses gradually increases; The defocus amount of the first microlens is +2.50D to +4.50D.

7. The myopia prevention and control glasses according to claim 6, characterized in that: The negative defocus area (33) includes a plurality of second micro lenses; The plurality of second micro lenses are arranged in a fan-shaped ring shape, and the sizes of the plurality of second micro lenses gradually decrease from the center to the edge, and the arrangement density of the plurality of second micro lenses gradually increases; The defocus amount of the second microlens is -1.00D to -2.75D.

8. The myopia prevention and control glasses according to claim 7, characterized in that: The first microlens is circular in shape; The second microlens is elliptical in shape, and its major axis direction extends along the radial direction of the negative defocus area (33).

9. The myopia prevention and control glasses according to claim 1, characterized in that: The low contrast area (34) includes a plurality of third microlenses and a plurality of fourth microlenses; A plurality of third microlenses and a plurality of fourth microlenses are alternately arranged one by one to form a fan-shaped low contrast area (34); and the spacing between the third microlenses and the fourth microlenses gradually decreases from the center to the edge.

10. The myopia prevention and control glasses according to claim 9, characterized in that: The defocus amount of the third microlens is +1.00D to +2.50D; the defocus amount of the fourth microlens is -1.00D to -1.75D.

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