Lens group for visual training instrument

Abstract

The utility model provides a lens group for a visual training instrument, which comprises a front lens part, a rear lens part and magnet mounting mechanisms, the magnet mounting mechanisms are arranged on the upper and lower sides of the middle part of the front lens part and the upper and lower sides of the middle part of the rear lens part, and magnets are arranged on the magnet mounting mechanisms. According to the lens group used on the visual training instrument, fool-proof buckles and mutual exclusion magnets are additionally arranged on the front free-form surface optical lens and the rear free-form surface optical lens, so that a tiny gap is formed between the front lens and the rear lens which are originally rubbed in the relative movement process, optical characteristics are not influenced, friction between the lenses is reduced, and the visual training effect is improved. The service life of the lens is prolonged, so that the visual training instrument has longer service life and better imaging effect; and two adjacent surfaces of the lens are not rubbed, so that a hardened plating layer is not used, and the cost of the lens is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vision training, in particular to a lens group used for a vision training instrument. Background Art

[0002] The vision training equipment currently available on the market, especially the vision training equipment with free-form surfaces as the optical system, is quite popular among people. However, the lenses of such products are open and easy to get dust in. There is no gap between the lenses, which makes them easy to contact and rub. During the training process, the lenses will move relative to each other. After a period of time, the lenses will be scratched and worn, resulting in a decrease in the light transmittance of the lenses and a decrease in the image quality. The service life of the equipment is very short, which affects the training effect of the patients.

[0003] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a lens set for a vision training instrument, which overcomes the above technical problems.

[0005] In order to achieve the above purpose, the utility model proposes the following technical solutions:

[0006] A lens set for a vision training device, comprising:

[0007] A front lens part, a rear lens part, and a magnet mounting mechanism, wherein the magnet mounting mechanism is arranged on the upper and lower sides of the middle part of the front lens part and the upper and lower sides of the middle part of the rear lens part, and a magnet is arranged on the magnet mounting mechanism.

[0008] Furthermore, the magnet mounting mechanism includes an upper magnet mounting mechanism and a lower magnet mounting mechanism. The upper magnet mounting mechanism is arranged on the upper side of the middle part of the front lens part and the upper side of the middle part of the rear lens part, and the lower magnet mounting mechanism is arranged on the lower side of the middle part of the front lens part and the lower side of the middle part of the rear lens part. Both the upper magnet mounting mechanism and the lower magnet mounting mechanism are provided with magnets.

[0009] Furthermore, foolproof buckles are provided on both sides of the magnet on the upper magnet mounting mechanism for connecting the vision training instrument.

[0010] Furthermore, the magnets on the upper magnet mounting mechanism have opposite magnetic poles on the sides close to each other.

[0011] Furthermore, the magnets on the lower magnet mounting mechanism have opposite magnetic poles on the sides close to each other.

[0012] Furthermore, both the front lens portion and the rear lens portion are integrated lenses.

[0013] Furthermore, the front lens part and the rear lens part both include a left lens and a right lens, and the left lens and the right lens are fixedly connected by a magnet mounting mechanism.

[0014] Furthermore, all lenses are progressive free-form optical lenses.

[0015] Furthermore, the plane sides of the front lens part and the rear lens part are installed close to each other, and the free curved surfaces of the front lens part and the rear lens part are both facing outwards.

[0016] The utility model discloses a lens group for a vision training instrument, which adds fool-proof buckles and mutually repelling magnets to the front and rear free-form optical lenses, so that a tiny gap is formed between the front and rear lenses that would originally rub against each other during relative movement, which does not affect the optical properties and reduces the friction between the lenses, thereby increasing the service life of the lenses, so that the vision training instrument has a longer service life and better imaging effect; and because the two adjacent surfaces of the lenses will not rub against each other, there is no need to use a hard coating, thereby reducing the cost of the lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a three-dimensional assembly diagram of a preferred embodiment of the utility model.

[0019] Figure 2 It is a front view of a preferred embodiment of the utility model.

[0020] Figure 3 It is a top view of a preferred embodiment of the utility model.

[0021] The above drawings include the following reference numerals:

[0022] 1. Front lens part; 2. Rear lens part; 3. Magnet mounting mechanism; 4. Magnet; 5. Anti-foolproof buckle; 31. Upper magnet mounting mechanism; 32. Lower magnet mounting mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Reference below Figures 1 to 3 , the utility model is further described as follows:

[0026] A lens set for a vision training device, comprising:

[0027] A front lens part 1, a rear lens part 2, and a magnet mounting mechanism 3, wherein the magnet mounting mechanism 3 is arranged on the upper and lower sides of the middle part of the front lens part 1 and the upper and lower sides of the middle part of the rear lens part 2, and a magnet 4 is arranged on the magnet mounting mechanism 3.

[0028] In this embodiment, the magnet mounting mechanism 3 includes an upper magnet mounting mechanism 31 and a lower magnet mounting mechanism 32. The upper magnet mounting mechanism 31 is arranged on the upper side of the middle part of the front lens part 1 and the upper side of the middle part of the rear lens part 2, and the lower magnet mounting mechanism 32 is arranged on the lower side of the middle part of the front lens part 1 and the lower side of the middle part of the rear lens part 2. The upper magnet mounting mechanism 31 and the lower magnet mounting mechanism 32 are both provided with magnets 4.

[0029] Magnet 4 uses N35 magnet, which is widely used, low-priced, and can meet the magnetic force requirements of the lens group, thereby achieving technical effects and reducing costs.

[0030] In this embodiment, foolproof buckles 5 are provided on both sides of the magnet 4 on the upper magnet mounting mechanism 31 for connecting to the vision training instrument.

[0031] The vision training instrument is also provided with an anti-foolproof buckle, which cooperates with the anti-foolproof buckle 5 on the upper magnet mounting mechanism 31 to fix the lens group to prevent the lens group from being assembled upside down. At the same time, it is convenient to quickly disassemble and assemble the lens group. When the lens group needs to be disassembled or replaced, the operation is more convenient.

[0032] In this embodiment, the magnets 4 on the upper magnet mounting mechanism 31 have opposite magnetic poles on the side close to each other, and the magnets 4 on the lower magnet mounting mechanism 32 have opposite magnetic poles on the side close to each other. Through the mutual repulsion between the opposite magnetic poles, a small gap is formed between the front lens part 1 and the rear lens part 2. On the premise of ensuring that the optical properties are not affected, it can also ensure that the front lens part 1 and the rear lens part 2 do not generate friction between each other during the relative movement. The front lens part 1 and the rear lens part 2 are both made of optical PC material. Since the mutual repulsion of the magnets 4 does not generate friction between the front lens part 1 and the rear lens part 2, the lens plane does not need to be hardened, which also reduces the lens cost.

[0033] The magnets 4 of the front lens part 1 and the magnets 4 of the rear lens part 2 can generate a repulsive force in a direction of relative displacement that is greater than the relative movement range of the front lens part 1 and the rear lens part 2, so as to ensure that the front lens part 1 and the rear lens part 2 can always maintain a small gap through mutual repulsion during the movement of the lenses.

[0034] In this embodiment, both the front lens portion 1 and the rear lens portion 2 are integrated lenses.

[0035] The one-piece lens is formed in one piece during processing, and there is no need to process the left and right lenses separately. The integrity after installation is better, and the relative position of the left and right lenses will not change due to deformation of the connection structure, and the optical properties are relatively stable.

[0036] In an optional embodiment, the front lens portion 1 and the rear lens portion 2 both include a left lens and a right lens, and the left lens and the right lens are fixedly connected via a magnet mounting mechanism 3 .

[0037] Compared with the integrated lens, the split design of the left lens and the right lens has the characteristics of flexible disassembly and assembly. When a certain lens needs to be replaced, it can be disassembled and assembled individually without replacing the left and right lenses as a whole, which is more flexible.

[0038] In this embodiment, all lenses are progressive free-form optical lenses.

[0039] Progressive free-form optical lenses have the following characteristics:

[0040] Free and wide field of vision: Progressive free-form optical lenses place the area where the light intensity changes on the back surface of the lens, making the progressive surface closer to the eyes, thereby greatly improving the field of vision and providing the eyes with a wider field of vision.

[0041] Stable light intensity: The progressive lenses made with advanced free-form surface technology have a reasonable light intensity design, which can bring users a more stable visual effect and wearing experience. The use of this technology ensures a smooth transition of the lens light intensity change, reducing visual fluctuations and discomfort.

[0042] Easy to adapt: ​​Because progressive free-form optical lenses are closer to the eyeball, the shaking feeling on both sides of the lens after wearing is smaller, which reduces the discomfort of first-time wearers and makes it easier to adapt. This design is especially suitable for users who have never worn glasses, and can help them quickly master the use of glasses.

[0043] In addition, progressive free-form optical lenses are not only suitable for middle-aged and elderly people, but teenagers can also use progressive lenses to correct their vision and relieve fatigue, thereby helping to control the development of myopia.

[0044] In this embodiment, the plane sides of the front lens part 1 and the rear lens part 2 are installed close to each other, and the free curved surfaces of the front lens part 1 and the rear lens part 2 are both facing outwards.

[0045] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lens assembly for a vision training device, characterized in that: include: A front lens part (1), a rear lens part (2), and a magnet mounting mechanism (3), wherein the magnet mounting mechanism (3) is arranged on the upper and lower sides of the middle part of the front lens part (1) and the upper and lower sides of the middle part of the rear lens part (2), and a magnet (4) is arranged on the magnet mounting mechanism (3).

2. The lens assembly for a vision training device according to claim 1, characterized in that: The magnet mounting mechanism (3) comprises an upper magnet mounting mechanism (31) and a lower magnet mounting mechanism (32); the upper magnet mounting mechanism (31) is arranged on the upper side of the middle part of the front lens part (1) and the upper side of the middle part of the rear lens part (2); the lower magnet mounting mechanism (32) is arranged on the lower side of the middle part of the front lens part (1) and the lower side of the middle part of the rear lens part (2); the upper magnet mounting mechanism (31) and the lower magnet mounting mechanism (32) are both provided with the magnet (4).

3. The lens assembly for a vision training device according to claim 2, characterized in that: Anti-foolproof buckles (5) are provided on both sides of the magnet (4) on the upper magnet mounting mechanism (31) for connecting to a vision training device.

4. The lens assembly for a vision training device according to claim 2, characterized in that: The magnets (4) on the upper magnet mounting mechanism (31) have opposite magnetic poles on the sides close to each other.

5. The lens assembly for a vision training device according to claim 2, characterized in that: The magnets (4) on the lower magnet mounting mechanism (32) have opposite magnetic poles on the sides close to each other.

6. The lens assembly for a vision training device according to claim 1, characterized in that: The front lens part (1) and the rear lens part (2) are both integrated lenses.

7. The lens assembly for a vision training device according to claim 1, characterized in that: The front lens part (1) and the rear lens part (2) both include a left lens and a right lens, and the left lens and the right lens are fixedly connected via the magnet mounting mechanism (3).

8. A lens assembly for a vision training device according to claim 6 or 7, characterized in that: All lenses are progressive free-form optical lenses.

9. The lens assembly for a vision training device according to claim 8, characterized in that: The plane sides of the front lens part (1) and the rear lens part (2) are installed close to each other, and the free curved surfaces of the front lens part (1) and the rear lens part (2) are both facing outwards.

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