Reserve optical lens for children's hyperopia

Abstract

The utility model discloses a child hyperopia reserve optical lens which comprises a lens body. The lens is a convex lens; the lens is provided with a bright vision area and a defocus area, the defocus area is located around the bright vision area, the bright vision area is provided with a basic area and further provided with an expansion area set facing two target directions, the first target direction faces the position over eyeballs, namely the position over the bright vision area, and the second target direction enables the eyeballs to face the nose wing direction. According to the utility model, the bright vision area is expanded along the direction of the upper part and the nose wing, so that children can be helped to correct the situation of difficulty in observation caused by dislocation of the eye observation direction and the bright vision area when wearing glasses to read books and study, and the area of the bright vision area is increased, so that children can easily observe; in cooperation with a peripheral defocus area, peripheral images are further projected in front of the retina, so that the growth of an eye axis can be effectively controlled, the consumption of hyperopia reserve of children is reduced, and the risk of myopia of children is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of lenses, and in particular relates to a reserve optical lens for children's hyperopia. Background Art

[0002] What is hyperopia reserve? In simple terms, hyperopia reserve is the reserve of eye adjustment ability, which is generally used for children. From a professional point of view: Hyperopia reserve: Hyperopia before emmetropization is mostly physiological hyperopia, which is a kind of "hyperopia reserve", which can be understood as a "buffer zone" to "counter" the development of myopia. Insufficient hyperopia reserve means that the naked eye vision is normal. Although the refractive state after mydriasis optometry does not reach the myopia standard, the hyperopia degree is lower than the physiological value range of the corresponding age group. For example, if the physiological refractive power of children aged 4 to 5 years old is 150 to 200 degrees of hyperopia, there is a hyperopia reserve of 150 to 200 degrees. If the physiological refractive power of children in this age group is only 50 degrees of hyperopia, it means that their hyperopia reserve is consumed too much and myopia may occur earlier.

[0003] Hyperopia reserve is equivalent to a "buffer zone". If children have bad eye habits, such as looking at electronic products for a long time and incorrect reading and writing posture, they may consume hyperopia reserve too quickly and accelerate the development of emmetropia. If they still have the habit of excessive eye use when the hyperopia reserve is consumed quickly, they may not be able to stop and develop myopia.

[0004] Protecting hyperopia reserve can be achieved through intervention with optical lenses, but there are currently no special lenses on the market that are specifically designed to protect children's hyperopia reserve. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is to provide a children's hyperopia reserve optical lens, which solves the problem of the lack of lenses for protecting children's hyperopia reserve in the prior art.

[0006] In order to solve the above technical problems, the utility model discloses a children's hyperopia reserve optical lens, comprising: a lens; the lens is a convex lens; the lens has a clear vision area and a defocus area, the defocus area is located around the clear vision area, the clear vision area has a basic area, and also has a set of expansion areas facing two target directions respectively, the first target direction is toward the top of the eyeball, that is, the top of the clear vision area, the second target direction is from the eyeball toward the nose wing, the expansion area set includes a first expansion area, a second expansion area, and a third expansion area formed by connecting the edges of the basic area, the first expansion area, and the second expansion area.

[0007] Furthermore, the first extended area is an area obtained by moving the area of ​​the basic area in the first target direction by a distance F minus the area overlapping with the basic area.

[0008] Furthermore, the second extended area is an area obtained by moving the area of ​​the basic area in the second target direction by a distance Z minus the area overlapping with the basic area.

[0009] Furthermore, the above-mentioned third expansion area includes the area enclosed by the edges of the first expansion area and the second expansion area and the common tangent line of the two, the area enclosed by the edges of the first expansion area and the basic area and the common tangent line of the two, and the area enclosed by the edges of the second expansion area and the basic area and the common tangent line of the two.

[0010] Furthermore, the moving distance of the first expansion area and the second expansion area satisfies F=Z, and sina=y / Z, wherein y is the distance that the line of sight moves downward relative to the level view state in the wearing state, and the angle a is the angle between the extension line of the eyeball toward the nose wing and the X-axis line.

[0011] Furthermore, the above-mentioned defocusing area has a plurality of annular defocusing lens arrays arranged from the inside to the outside, and each annular defocusing lens array is composed of a plurality of defocusing lenses.

[0012] Compared with the prior art, the present application can obtain the following technical effects:

[0013] The utility model expands the clear vision area along the upper side and the direction of the nose wing, which can help children correct the situation where the eye observation direction is misaligned with the clear vision area when wearing glasses to look straight ahead or lower the head to read or study, causing observation difficulties. The increase in the clear vision area can make it easier for children to observe and reduce fatigue. The peripheral defocus area can further project the peripheral image in front of the retina, which can effectively control the growth of the eye axis, slow down the consumption of children's hyperopia reserve, and reduce the risk of children's myopia.

[0014] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 is a schematic diagram of a lens according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of a clear vision area and a lens according to one embodiment of the utility model.

[0018] Figure ID

[0019] Lens 1, clear vision zone 2, defocus zone 3, annular defocus lens array 4, basic zone 5, first expansion zone 6, second expansion zone 7, third expansion zone 8. DETAILED DESCRIPTION

[0020] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a lens according to an embodiment of the present invention; Figure 2 It is a schematic diagram of a clear vision area and a lens according to one embodiment of the utility model.

[0022] A child hyperopia reserve optical lens, comprising: a lens 1; the lens 1 is a convex lens; the lens 1 has a clear vision area 2 and a defocus area 3, the defocus area 3 is located around the clear vision area 2, the defocus area 3 has a plurality of annular defocus lens arrays 4 arranged from the inside to the outside, and each annular defocus lens array 4 is composed of a plurality of defocus lenses. The clear vision area 2 has a basic area 5, and also has a set of expansion areas facing two target directions respectively, the first target direction is facing directly above the eyeball, that is, directly above the clear vision area, and the second target direction is from the eyeball to the nose wing direction, and the expansion area set includes a first expansion area 6, a second expansion area 7, and a third expansion area 8 formed by connecting the edges of the basic area 5, the first expansion area 6, and the second expansion area 7.

[0023] The first expansion area 6 is the area of ​​the basic area 5 moved in the first target direction by a distance F minus the area overlapping with the basic area 5; the second expansion area 7 is the area of ​​the basic area 5 moved in the second target direction by a distance Z minus the area overlapping with the basic area 5; the third expansion area 8 includes the area enclosed by the edges of the first expansion area 6 and the second expansion area 7 and the common tangent line of the two, the area enclosed by the edges of the first expansion area 6 and the basic area 5 and the common tangent line of the two, and the area enclosed by the edges of the second expansion area 7 and the basic area 5 and the common tangent line of the two; the distance moved by the first expansion area 6 and the second expansion area 7 satisfies F=Z, and sin a=y / Z, wherein y is the distance that the line of sight moves downward relative to the level view state in the wearing state, and the angle a is the angle between the extension line of the eyeball toward the nose wing and the X-axis line.

[0024] When children wear glasses, the glasses may slip down during normal horizontal observation, causing the eyes to look higher than the clear vision zone 2. When reading or doing homework, the eyes will focus downward and the direction of the eyes will be biased towards the nose. In response to this eye habit, the present application has expanded the clear vision zone 2 to reduce observation fatigue and ensure the quality of retinal imaging.

[0025] In summary, the utility model expands the clear vision zone 2 upward and in the direction of the nose wing, which can help children correct the situation where the eye observation direction is misaligned with the clear vision zone 2 when they wear glasses to look straight or bow their heads to read or study, causing observation difficulties. The increase in the area of ​​the clear vision zone 2 can facilitate children to observe easily and reduce fatigue. In conjunction with the peripheral defocus zone 3, the peripheral image is further projected in front of the retina, which can effectively control the growth of the eye axis, slow down the consumption of children's hyperopia reserve, and reduce the risk of children's myopia.

[0026] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A children's hyperopia reserve optical lens, comprising: lens; The lens is a convex lens; The lens is characterized in that the lens has a clear vision area and a defocus area, the defocus area is located around the clear vision area, the clear vision area has a basic area, and also has a set of expansion areas facing two target directions respectively, the first target direction is toward directly above the eyeball, that is, directly above the clear vision area, and the second target direction is from the eyeball toward the nose wing, and the expansion area set includes a first expansion area, a second expansion area, and a third expansion area formed by connecting the edges of the basic area, the first expansion area, and the second expansion area.

2. The children's hyperopia reserve optical lens according to claim 1, characterized in that: The first extended area is an area obtained by moving the area of ​​the basic area in a first target direction by a distance F minus the area overlapping with the basic area.

3. The children's hyperopia reserve optical lens according to claim 1, characterized in that: The second extended area is an area obtained by moving the area of ​​the basic area in the second target direction by a distance Z minus the area overlapping with the basic area.

4. The children's hyperopia reserve optical lens according to claim 1, characterized in that: The third expansion area includes an area enclosed by the edges of the first expansion area and the second expansion area and their common tangent lines, an area enclosed by the edges of the first expansion area and the basic area and their common tangent lines, and an area enclosed by the edges of the second expansion area and the basic area and their common tangent lines.

5. The children's hyperopia reserve optical lens according to any one of claims 1, 2 and 3, characterized in that: The moving distance between the first expansion area and the second expansion area satisfies F=Z, and sin a=y / Z, wherein y is the distance that the line of sight moves downward relative to the horizontal state in the wearing state, and the angle a is the angle between the extension line of the eyeball toward the nose wing and the X-axis line.

6. The children's hyperopia reserve optical lens according to claim 1, characterized in that: The defocusing area comprises a plurality of annular defocusing lens arrays arranged from the inside to the outside, and each annular defocusing lens array is composed of a plurality of defocusing lenses.

Images