CN216646988U - Full focus myopia numerical control glasses - Google Patents
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- CN216646988U CN216646988U CN202123080074.5U CN202123080074U CN216646988U CN 216646988 U CN216646988 U CN 216646988U CN 202123080074 U CN202123080074 U CN 202123080074U CN 216646988 U CN216646988 U CN 216646988U
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- 208000001491 myopia Diseases 0.000 title claims abstract description 43
- 230000004379 myopia Effects 0.000 title claims abstract description 38
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Abstract
The utility model relates to an all-focus myopia numerical control lens which comprises a lens frame, lens legs, a nose support and lenses, wherein the lenses are designed to be aspheric surfaces, the power of the lenses is gradually reduced from the center to the periphery, the peripheral power of the lenses is gradually reduced according to the human retina imaging principle, a focus projected behind a retina is moved to the retina or the front of the lens, the center of the lenses is an oval center area, the periphery of the oval center area is a first peripheral area, the periphery of the first peripheral area is a second peripheral area, the periphery of the second peripheral area is a third peripheral area, the power of the lenses is gradually reduced from the oval center area to the third peripheral area, the peripheral vision is corrected while the central vision of the retina is corrected, the tendency of backward growth of the axis of an eye is relieved, and the purpose of delaying the development of myopia is finally achieved.
Description
Technical Field
The utility model relates to a pair of myopia glasses, in particular to a pair of full-focus myopia numerical control glasses for preventing and controlling myopia.
Background
Ametropia means that when the eye is not adjusted, parallel rays at far distance cannot form a clear object image on the retina after passing through the refractive action of the eye, and the image is formed in front of or behind the retina, so that the far vision object blur is seen, and the far vision object blur includes hyperopia, myopia and astigmatism. The refractive error can be corrected by the optical lens, and the clear effect of seeing the far object is achieved.
Myopic eyes, which are the most common type of ametropia, are characterized in that when the eyes are still in accommodation, parallel rays from more than 5 meters pass through the dioptric system of the eyes, and the rays are focused in front of the retina, and the higher the myopic degree, the farther the focus is from the retina. Because the focus is not on the retina, a myopic eye sees distant objects blurry, but a myopic eye sees near objects sharp.
Due to the popularization of electronic products, the improvement of eating habits, the excessive time for guidance after class and the reduction of outdoor activities, the occurrence of myopia of children and teenagers is aged and advanced. Myopia of children and teenagers is classified into the following categories: the first is myopia caused by overlong anterior-posterior axis of eyeball (called axial myopia), which is caused by over-intake of nutrition and over-fast body development and exceeds the length of the ocular axis of the children of the same age; secondly, the method comprises the following steps: myopia (called refractive myopia) caused by strong refractive power of the dioptric system occurs because children and teenagers learn at short distances for a long time and the reading posture is incorrect due to insufficient lighting, and the dioptric system cannot recover after the degree is increased.
The myopia degree of most children and teenagers can increase every year, and the degree of the myopia degree of children and teenagers at different ages is different every year, so that the myopia degree of children and teenagers is continuously developed and increased mainly due to the following reasons: because the children and teenagers with myopia do not find and correct the myopia in time, and wear improper correction lenses, the object image of a distant target is focused in front of or behind the retina instead of being focused on the retina when the children and teenagers are looking for a long distance, the image is blurred and unclear, and the retina has the characteristic of tracing the focus, so that the retina is induced to develop towards the back of the eyeball, the axis of the eye is elongated, and the myopia degree is further increased, which is called out-of-focus myopia.
For people with myopia, especially children and teenagers in the growth and development period, the common single-focus frame glasses are mostly worn to correct the vision, so that the problem of unclear seeing is solved, the whole lens of the common single-focus glasses has only one degree, the degrees of any area of the lens are the same, and the degree is required for correcting a target at the position of 5 meters to the retina. When the common monofocal lens is worn for correction, the object image passing through the optical central point of the lens can fall on the central retina to form a clear object image. Because the whole lens has the same power, the object image passing through the periphery of the optical center of the lens falls behind the retina, so that the retina has poor imaging quality and poor visual perception, the peripheral retina is defocused, and the myopia power is further increased.
In summary, it is necessary to design a pair of objective myopic glasses aiming at the cause mechanism of out-of-focus myopia to solve the problem that the common monofocal myopic glasses can correct vision but cannot control the increase of myopia degree.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to solve the problems in the prior art, an improved full-focus myopia numerical control lens for preventing and controlling myopia is provided.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a full-focus myopia numerical control glasses comprises a glasses frame, glasses legs and lenses, wherein the lenses are aspheric lenses, the power of the lens is gradually reduced from the center to the periphery, the lens is designed to gradually reduce the power of the periphery according to the retina imaging principle of human eyes, the focus projected behind the retina is moved to the retina or the front, the center of the lens is an elliptical central area, the periphery of the elliptical central area is a first peripheral area, the periphery of the first peripheral area is a second peripheral area, the periphery of the second peripheral area is a third peripheral area, the power of the lens is decreased from the elliptic central area to the third peripheral area in turn, the refractive index of the lens is 1.60, the dispersion coefficient is 41, the luminosity range is +1.50D to-9.00D, the short-wave harmful blue light prevention wave band of the lens is 385-445 nanometers, and the lens has a good short-wave harmful blue light prevention function.
Furthermore, the lens is a colorless transparent super-tough lens such as a colorless polyurethane material, and is an impact-resistant lens material, and the lens can keep the lens intact after being impacted by a moving object with a certain speed.
Furthermore, the lens has the ultraviolet resistance of 380 and has a good ultraviolet resistance function.
Further, the lenses of the utility model are of asymmetric design. The field of vision of the eyes is different at each position, with the upper field being the smallest, followed by the nasal field, the lower field being slightly larger, and the temporal field being the largest, up to 90 degrees. The visual field range is not symmetrical, the peripheral decreasing area required by small visual field is small, and the degree decreasing variation of the peripheral area is small.
Because the size of the visual field of the eye is in an asymmetric structure, according to the bionic design of human eyes, the decreasing degree variation of the peripheral area ranges and the decreasing degree variation of the peripheral area at the upper side and the lower side of the central area of the lens, the nasal side and the temporal side are different, namely the upper side and the lower side are asymmetric, the nasal side and the temporal side are asymmetric, and the areas of the decreasing degree variation of the peripheral area ranges and the decreasing degree variation of the peripheral area ranges from small to large are the upper side, the nasal side, the lower side and the temporal side, so that the condition that the peripheral retina image can be corrected to the front of the retina or the retina can be guaranteed.
Further, the power gradually changes from the center of the corrected retina to the periphery of the corrected retina, the negative power gradually decreases (i.e., the positive power gradually increases), and the optical power ranges from +0.25D to +0.75D (the power ranges from +0.25D to +0.75D from the central area to the upper side gradient area, from +0.25D to +0.75D from the central area to the lower side gradient area, from +0.25D to +0.75D from the central area to the nasal side gradient area, and from +0.25D to +0.75D from the central area to the temporal side gradient area).
Further, the lens of the present invention is a bi-aspheric design, the curvatures of the inner and outer surfaces of the lens are varied, the radius of curvature of the outer surface of the lens is increased from the center to the periphery, and the radius of curvature of the inner surface of the lens is increased from the center to the periphery, which allows for a lighter weight lens with a thinner thickness.
The utility model has the beneficial effects that: the defects in the background technology are overcome, the lens is designed by adopting an aspheric surface, the design of reducing the peripheral degrees of the lens is adopted according to the retina imaging principle of human eyes, the focus projected behind the retina is corrected to the retina or the front, the central vision of the retina is corrected, the peripheral vision is also corrected, the tendency of axial backward growth of eyes is slowed down, the purpose of delaying the development of myopia is finally achieved, the directions of visual sense light rays in other directions are adjusted, the object image is completely located in front of the retina, the visual perception is enhanced, and the visual decline is effectively delayed.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the imaging principle of a common pair of spectacles;
fig. 3 is a schematic view of the imaging principle of the present invention.
In the figure: 1. the glasses comprise a glasses frame, 2 glasses legs, 3 lenses, 4 external objects, 5 lenses, 6 object images, 7 common myopia lenses and 8 nose pads.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The embodiment of the overall structure schematic diagram of the utility model as shown in fig. 1 integrally comprises a frame 1 and temples 2 thereon, wherein the frame 1 is provided with a nose pad 8 and lenses 3, the lenses 3 are made of colorless polyurethane material, the refractive index is 1.60, the dispersion coefficient is 41, the luminosity range is +1.50D to-9.00D, and the lens has an ultraviolet protection function, and the ultraviolet protection capability is ultraviolet protection 380. The lens 3 has the function of preventing the short-wave harmful blue light, the wave band of the short-wave harmful blue light is 385-, wherein the center of the lens 3 is an elliptical central area with 200 degrees, which is a special area for looking far and corrects the central vision of the retina, the optical power of the area can be set, i.e., the diopter number, which is large enough to ensure far-looking vision and clarity, the periphery of the central elliptical area is 175 deg. from the first peripheral area, the periphery of the first peripheral zone is a second peripheral zone of 150 degrees, the periphery of the second peripheral zone is a third peripheral zone of 125 degrees, the peripheral zone is a retinal correction zone, the optical power of the area is lower than that of the central area 200, the function is to correct the focus projected behind the retina to the retina or in front of the retina, the central retina and the peripheral retina can be clearly imaged, the area is wide enough, the power change can be guaranteed, and the requirement of eyeball rotation can be met. The hyperopic defocus generated at the periphery of the retina is avoided, and the excessive elongation of the axis of the eye is delayed.
The left and right lenses are designed asymmetrically, so that the images of the nasal side and the temporal side can be corrected to the retina or in front of the retina. The power gradually changes from the center of the corrected retina to the periphery of the corrected retina, the negative power gradually decreases (namely the positive power gradually increases), and the optical power changes within the range of +0.25D to + 0.75D.
As shown in fig. 2, which is a schematic diagram of the imaging principle of a common myopia lens 7 in the background art, when the normal myopia lens 7 is used for correction, an object image 6 of an external object 4 passing through an optical center point falls on a central retina at the bottom of a crystalline lens 5 through the adjusting function of the common myopia lens 7, but due to the consistency of the power of the common myopia lens and the stretching deformation of an eye axis, the image is uniformly located in a standard circumference, so that some vision sensing light passes through a pupil, and part of the object image 6 falls behind the retina, thereby causing poor vision.
As shown in fig. 3, which is a schematic view of the imaging principle of the present invention, by reducing the peripheral power of the lens 3 of the present invention, the object image 6 passing through the optical center point is on the central retina, and at the same time, the directions of the visual sense light rays in other directions are adjusted, so that the object image is completely located in front of the retina, thereby enhancing the visual perception and effectively delaying the visual deterioration.
The utility model is more suitable for children and teenagers, because the eye axis of the children and the teenagers is still in the development process, the development of the defocused myopia can be effectively slowed down, and the eyesight is protected; the lens is not a multifocal lens but an aspheric lens, clear distance luminosity is provided in the central area, the peripheral degree is gradually reduced, the function of free movement of eyeballs is released, and meanwhile, the visual deterioration caused by defocusing myopia can be effectively controlled, and the visual perception is improved.
The glasses of the utility model can be used for the prevention and control of the deepening of the adjustable myopia degrees and the correction of the deepening of the defocusing myopia degrees: because the children and teenagers have heavy lessons and watch television, computers and books for a long time at a short distance, the myopia deepening is generated, measures are needed to be taken to enable the teenagers to watch more far and reduce the adjustment used when the eyes watch near, and the deepening of the adjustable myopia degrees of the teenagers can be slowed down;
the lens corrects a focus projected behind the retina onto the retina or in front of the retina by the design of reducing the peripheral degree of the lens according to the retina imaging principle of a human eye, corrects the peripheral vision of the retina while correcting the central vision of the retina, delays the tendency of the axial backward growth of the eye, and finally achieves the purpose of delaying the development of the myopia.
While particular embodiments of the present invention have been described in the foregoing specification, the present invention is not limited to the specific embodiments, and modifications and variations of the foregoing detailed description can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides an all-focus myopia numerical control glasses, includes picture frame (1), mirror leg (2), nose holds in the palm (8) and lens (3), lens (3) are the lens of aspheric surface design, the number of degrees of lens (3) diminishes from the center to periphery all around gradually, moves the focus of throwing behind the retina to on the retina or the place ahead, its characterized in that: the center of the lens (3) is an oval center area, the periphery of the oval center area is a first peripheral area, the periphery of the first peripheral area is a second peripheral area, the periphery of the second peripheral area is a third peripheral area, and the power of the lens (3) is sequentially decreased from the oval center area to the third peripheral area;
the refractive index of the lens is 1.60, the dispersion coefficient is 41, the luminosity range is +1.50D to-9.00D, and the shortwave-resistant harmful blue light wave band of the lens (3) is 385 nm to 445 nm.
2. The full focus near vision numerical control spectacles of claim 1, wherein: the lens (3) is a colorless transparent lens.
3. The full focus near vision numerical control spectacles of claim 1, wherein: the lens (3) has UV protection capability of 380.
4. The full focus near vision numerical control spectacles of claim 1, wherein: the degree degressive variation quantity of the lens (3) on the upper side and the lower side of the oval central area and on the nasal side and the temporal side is different, namely the degree area is asymmetric.
5. The full focus near vision numerical control spectacles of claim 4, wherein: the degree change range from the oval central area to the upper gradual change area is + 0.25D- +0.75D, the degree change range from the oval central area to the lower gradual change area is + 0.25D- +0.75D, the degree change range from the oval central area to the nose gradual change area is + 0.25D- +0.75D, and the degree change range from the oval central area to the temporal gradual change area is + 0.25D- + 0.75D.
6. The full focus near vision numerical control spectacles of claim 1, wherein: the radius of curvature of the outer surface of the lens (3) increases from the center to the periphery, and the radius of curvature of the inner surface of the lens (3) increases from the center to the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123080074.5U CN216646988U (en) | 2021-12-09 | 2021-12-09 | Full focus myopia numerical control glasses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123080074.5U CN216646988U (en) | 2021-12-09 | 2021-12-09 | Full focus myopia numerical control glasses |
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| Publication Number | Publication Date |
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| CN216646988U true CN216646988U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123080074.5U Active CN216646988U (en) | 2021-12-09 | 2021-12-09 | Full focus myopia numerical control glasses |
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| CN (1) | CN216646988U (en) |
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- 2021-12-09 CN CN202123080074.5U patent/CN216646988U/en active Active
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