A foggy sand multi-point defocus lens and glasses

Abstract

The present application provides a kind of fog sand multi-point defocus lens and glasses, it is related to lens technical field, the fog sand multi-point defocus lens includes lens, optical correction area is provided on the lens, defocus area and fog sand area, optical correction area is arranged in the middle position of the lens, defocus area and fog sand area are sequentially annularly arranged outside optical correction area from inside to outside, the glasses includes the fog sand multi-point defocus lens;The optical correction area of the present application is located in the middle, has good visual correction effect, defocus area is located in the outside, adopts multi-point defocus structure, on the basis that visual correction effect is not affected, myopia multi-point positive defocus can inhibit eye axis elongation, so as to play the effect of inhibiting myopia deepening, hyperopia multi-point negative defocus can stimulate eye axis elongation, so as to play the effect of inhibiting hyperopia deepening, fog sand area is located in the periphery, can reduce retinal imaging contrast and brightness, fog sand area and defocus area cooperate with each other, also have the effect of stabilizing eye position and preventing strabismus.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lenses, in particular to a foggy sand multi-point defocus lens and glasses. BACKGROUND

[0002] The eye is an organ for perceiving light, when looking at a distant object, if the light is just focused on the retina, the image is clear, this state is called emmetropia, if the eye axis is relatively long or the corneal and lens refractive power is too strong, the imaging point will be located in front of the retina, that is, myopia, and the corresponding defocus state is myopic defocus, on the contrary, the imaging point is behind the retina, that is, hyperopia, and the corresponding defocus state is hyperopic defocus.

[0003] For myopia and hyperopia, the traditional method is to use concave lenses and convex lenses respectively for optical correction, taking myopia as an example, when myopia occurs, the posterior surface of the eyeball changes from a spherical surface to an ellipsoidal surface, but the image surface is still spherical, so there is a difference in defocus amount between the central and peripheral fields of view. When wearing ordinary myopia glasses to look far away, the entire image plane moves backward, and the central point converges, at this time, the peripheral field of view lags behind and presents hyperopic defocus. When looking at a near place with myopia glasses, the lens undergoes positive adjustment, the central point focuses, and the periphery still presents hyperopic defocus, that is, when a myopic patient wears ordinary myopia glasses, there is a lag in the peripheral field of view in all scenes, and hyperopic defocus, which will lengthen the eye axis, is a stimulus for further development of myopia. Accordingly, to inhibit the deepening of myopia, the existing defocus lens is used, which sets multiple protrusions on the lens to make the peripheral field of view image ahead of time, present myopic defocus, and thus inhibit the deepening of myopia to a certain extent. However, the existing defocus lens cannot change the contrast, brightness and chromatic aberration of the image, and the strong contrast and brightness of today's various electronic products such as televisions, mobile phones and computers will stimulate eye growth, which is not conducive to the inhibition of vision deepening.

[0004] Therefore, the existing defocus lens has limited effect on inhibiting vision deepening. SUMMARY

[0005] The purpose of the present application is to provide a foggy sand multi-point defocus lens to solve the technical problem of the existing defocus lens in the prior art, which has limited effect on inhibiting vision deepening. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which will be described in detail below.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The application provides a foggy sand multi-point defocus lens, which comprises a lens, wherein an optical correction area, a defocus area and a foggy sand area are arranged on the lens, the optical correction area is arranged at a middle position of the lens, and the defocus area and the foggy sand area are annularly arranged outside the optical correction area from inside to outside.

[0008] Preferably, the foggy sand area is annularly arranged, and the foggy sand area comprises a plurality of uniformly distributed foggy sand units.

[0009] Preferably, the foggy sand unit is arranged in a cross-shaped protrusion, a circular protrusion, a cross-shaped groove or a circular groove.

[0010] Preferably, the defocus area comprises a plurality of annular defocus bands which are arranged at intervals from inside to outside, and the annular defocus band comprises a plurality of unit defocus portions which are arranged in a circumferential direction.

[0011] Preferably, the optical correction area is circular or regular hexagonal, and the shape of the annular defocus band is matched with the shape of the optical correction area.

[0012] Preferably, the interval between two adjacent unit defocus portions on the same annular defocus band is the same.

[0013] Preferably, the unit defocus portion is circular.

[0014] Preferably, the lens is a concave lens, and the unit defocus portion is a protrusion.

[0015] Preferably, the lens is a convex lens, and the unit defocus portion is a groove or a protrusion.

[0016] The application further provides a pair of glasses comprising the foggy sand multi-point defocus lens.

[0017] The foggy sand multi-point defocus lens provided by the application has at least the following beneficial effects:

[0018] The foggy sand multi-point defocus lens comprises a lens, wherein an optical correction area, a defocus area and a foggy sand area are arranged on the lens, the optical correction area is mainly used for correcting vision, the defocus area is used for inhibiting deepening of vision, and the foggy sand area can effectively reduce retinal imaging contrast and brightness and further inhibit deepening of vision.

[0019] The optical correction area is arranged at the middle position of the lens, the defocus area and the foggy sand area are arranged in sequence from inside to outside outside the optical correction area, the optical correction area is arranged at the middle position, has good vision correction effect, the defocus area is arranged at the peripheral position of the optical correction area, adopts the structure of peripheral positive defocus or negative defocus, can effectively inhibit the speed of axial length growth or stimulate axial length extension on the basis of not affecting the vision correction effect, thereby playing the effect of inhibiting myopia or hyperopia deepening, the foggy sand area is arranged at the peripheral position, can effectively reduce the retinal imaging contrast and brightness, reduce chromatic aberration, reduce spherical aberration, reduce the prism effect generated at the edge of the lens, and can also reduce the visual range, improve the point image definition and visual quality, the defocus area and the foggy sand area cooperate with each other, and the inhibition effect of vision deepening is remarkable, and the distribution structure of the optical correction area, the defocus area and the foggy sand area from inside to outside also has the effect of stabilizing the eye position, and can effectively prevent strabismus.

[0020] The application arranges the optical correction area, the defocus area and the foggy sand area in sequence from the center to the periphery of the lens, on the basis of ensuring good vision correction effect, not only has remarkable effect of inhibiting vision deepening, but also can stabilize the eye position and effectively prevent strabismus. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0023] Figure 2 is an enlarged view of part A of the present application;

[0024] Figure 3 is an enlarged view of part B of the present application;

[0025] Figure 4 is a structural schematic diagram of another embodiment of the present application;

[0026] Figure 5 is an enlarged view of part C of the present application;

[0027] Figure 6 is a structural schematic diagram of still another embodiment of the present application;

[0028] Figure 7 is a schematic diagram of light rays of a myopia lens of the present application;

[0029] Figure 8is a schematic diagram of light rays of the hyperopic lens of the present application.

[0030] Reference signs

[0031] 1, lens; 2, optical correction zone; 3, defocus zone; 31, unit defocus part; 4, fog and sand zone; 41, fog and sand unit. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Embodiment 1:

[0034] The present application provides a fog and sand multi-point defocus lens, referring to Figure 1 , the fog and sand multi-point defocus lens comprises a lens 1, the lens 1 is provided with an optical correction zone 2, a defocus zone 3 and a fog and sand zone 4, the material of the lens 1 is set to PC (polycarbonate) material or resin material, the diameter of the lens 1 is set to 60-80 mm, and different optical power lenses 1 need different front surface power optical design, the power is between 100° and 400°.

[0035] The lens 1 is set as a concave lens, and the fog and sand multi-point defocus lens is a myopic lens.

[0036] The optical correction zone 2 is arranged at the middle position of the lens 1, and the defocus zone 3 and the fog and sand zone 4 are arranged in sequence from inside to outside outside the optical correction zone 2.

[0037] In use, the myopic patient wears the fog and sand multi-point defocus lens.

[0038] Referring to Figure 7 , the light rays entering through the central position optical correction zone 2 are focused on the retina through the pupil, and the image is clear.

[0039] The light rays entering through the peripheral position defocus zone 3 are imaged in front of the retina, showing myopic defocus, and the imaging advance can effectively inhibit the axial elongation frequency, thereby inhibiting the deepening of myopia.

[0040] The light rays entering through the peripheral position fog and sand zone 4 have significantly weakened brightness, contrast and the like.

[0041] In the above process, since the optical correction area 2 is located in the middle of the lens 1, it has good visual correction effect on one hand, and on the other hand, since the optical correction area 2 has no interference, when in use, the eyes will actively choose the non-interference area to look far, and over time, the effective combination of the defocus area 3 and the foggy sand area 4, especially the foggy sand area 4, reduces contrast and reduces scattered light, which will not prematurely stimulate the development of the eyes to cause myopia to deepen, and also can play a role in stabilizing the eye position, and the effect of preventing strabismus is remarkable.

[0042] The defocus area 3 is arranged at the peripheral position of the optical correction area 2, which on one hand does not affect the imaging clarity, and the sparse and dense clear area ensures good comfort, and children can easily adapt, and on the other hand, can effectively move the focus of light forward, as shown in the figure, the imaging is ahead of time, in the form of myopic defocus, which can effectively inhibit the elongation of the eye axis, thereby playing a role in inhibiting the deepening of myopia, and even relieving myopia. Figure 7

[0043] The foggy sand area 4 is arranged at the peripheral position of the defocus area 3, which can effectively reduce contrast and brightness by interfering, reducing and filtering part of the light, thereby reducing chromatic aberration, spherical aberration, and reducing the occurrence of prismatic effect at the edge of the lens 1, and at the same time, has the effect of narrowing the visual range, thereby improving the central point image clarity and visual quality.

[0044] The foggy sand area 4 and the defocus area 3 cooperate with each other, and the inhibitory effect of myopia deepening is remarkable.

[0045] As an optional implementation, as shown in the figure, the foggy sand area 4 is arranged in a ring shape, and the foggy sand area 4 includes a plurality of uniformly distributed foggy sand units 41. The dense foggy sand unit 41 structure is simple, and can effectively reduce brightness and contrast. Figures 1-3 The distance between adjacent foggy sand units 41 is 0.1-0.8mm.

[0046] Optionally, as shown in the figures,

[0047] and Figure 1 , the foggy sand unit 41 is arranged in a cross-shaped groove. Figure 2 Another optional implementation, as shown in the figures,

[0048] and Figure 4 , the foggy sand unit 41 is arranged in a circular groove, and the diameter thereof is arranged to be 0.08-0.5mm. Figure 5 The concave-convex foggy sand unit 41 can be integrally formed with the multi-point defocus structure on the front surface of the lens 1 by a mold, or can be formed by post-printing or machine carving.

[0049] Yet another optional implementation, the foggy sand unit 41 is arranged in a cross-shaped groove or a circular groove.

[0050]

[0051] ​​The foggy sand unit 41 is engraved on the front surface or the back surface of the lens 1 by laser.

[0052] In actual use, the structure, density and size of the foggy sand unit 41 are customized according to the specific needs of the actual myopic patient.

[0053] As an optional embodiment, as shown in Figure 1 The defocus area 3 includes a plurality of annular defocus bands arranged in sequence from inside to outside.

[0054] The annular defocus bands arranged in sequence ensure clear imaging and have a large defocus area.

[0055] The annular defocus band includes a plurality of unit defocus parts 31 arranged in a circumferential direction. The unit defocus part 31 is a convex structure, forms a microlens, can effectively focus light to the front of the retina, image in advance, form myopia defocus, and inhibit myopia deepening.

[0056] As an optional embodiment, the innermost annular defocus band of the defocus area 3 encloses the optical correction area 2, so the shape of the optical correction area 2 is adapted to the shape of the innermost annular defocus band.

[0057] As shown in Figure 1 Or Figure 4 In this embodiment, the optical correction area 2 is circular, and the diameter of the optical correction area 2 is 8mm to 12mm. Correspondingly, the annular defocus band is circular.

[0058] As shown in Figure 6 In this embodiment, the optical correction area 2 is a regular hexagon, and the annular defocus band is a regular hexagon.

[0059] As an optional embodiment, as shown in Figure 3 The spacing between two adjacent annular defocus bands is a, and a ranges from 0.20mm to 1.2mm.

[0060] The spacing between two adjacent unit defocus parts 31 on the same annular defocus band is d, and d ranges from 0.20mm to 2mm.

[0061] The unit defocus parts 31 are uniformly distributed, and the defocus points are arranged in a certain density to ensure the imaging in advance effect of the periphery of the macular fovea.

[0062] As an optional embodiment, the unit defocus part 31 is circular.

[0063] The circular convex unit defocus part 31, i.e., the microlens, has a diameter ranging from 0.5mm to 1.5mm. The microlens has a power ranging from positive 200 degrees to 500 degrees. Here, the power of the microlens is similar to the power of the lens.

[0064] In actual use, the shape and number of unit defocus portions 31, and the size and area of optical correction zone 2, defocus zone 3 and fog zone 4 are adjusted according to the age, pupil distance, whether eye position needs to be protected and other actual conditions of the myopic patient.

[0065] In order to detect the use effect of the fog multi-point defocus lens, 50 teenagers aged 8-17 with normal visual function and corrected visual acuity equal to and greater than 1.0 were fitted with the fog multi-point defocus lens and wore it for one year, and were followed up uninterruptedly, and the following detection results were obtained.

[0066] Table 1 Refraction results

[0067]

[0068]

[0069]

[0070] Table 1 Refraction results (continued 1)

[0071]

[0072]

[0073] Table 1 Refraction results (continued 2)

[0074]

[0075]

[0076] Table 1 Refraction results (continued 3)

[0077]

[0078]

[0079]

[0080] Table 1 Refraction results (continued 4)

[0081]

[0082]

[0083]

[0084] Note:

[0085] In order to ensure the privacy of 50 teenagers aged 8-17, the 50 teenagers are replaced by serial numbers.

[0086] Left represents the left eye, right represents the right eye, S represents myopia degree, C represents astigmatism degree, and A represents astigmatism axis angle. For example, right S-2.25C-0.25A166 represents that the right eye has a myopia degree of 225° and an astigmatism degree of 25°, and the astigmatism axis angle is 166°.

[0087] It can be seen from the above optometry result table that among the 50 teenagers, the vision of 36 teenagers remains unchanged within one year, the vision of 7 teenagers is improved, and the vision of only 7 teenagers is deepened, and the deepening degree is not more than 50°. Therefore, the application can effectively inhibit the deepening of myopia, and the effect is remarkable.

[0088] Example 2

[0089] Example 2 is based on example 1, which is a specific optimization example.

[0090] The diameter of the lens 1 is 72 mm, and the optical correction area 2 is set as a circle with a diameter of 9.5 mm.

[0091] The defocus area 3 is provided with 10 annular defocus bands, and the total number of unit defocus parts 31 is 525. The unit defocus part 31 is set as a circular protrusion with a diameter of 1 mm. The distance between adjacent unit defocus parts 31 on the same annular defocus band is set to 0.384-0.434 mm, and the distance between adjacent annular defocus bands is set to 0.45 mm.

[0092] The fog and sand area 4 includes a plurality of fog and sand bands arranged from inside to outside, and the fog and sand band includes a plurality of circumferentially uniformly distributed fog and sand units 41. The inner diameter of the fog and sand area 4 is set to 37.6 mm, and the outer diameter is set to 65.1 mm. The fog and sand unit 41 is set as a circle with a single fog and sand point diameter of 0.25 mm. The distance between adjacent two fog and sand units 41 on the same fog and sand band is set to 0.32 mm, and the distance between adjacent fog and sand bands is set to 0.55 mm.

[0093] Example 3

[0094] Example 3 is based on example 1, which is a specific optimization example.

[0095] The diameter of the lens 1 is 72 mm, and the optical correction area 2 is set as a regular hexagon with an inscribed circle diameter of 9.0796 mm and an circumscribed circle diameter of 10.65 mm.

[0096] The innermost annular defocusing band of the defocusing zone 3 is adapted to the shape of the optical correction zone 2 and is a regular hexagon. The unit defocusing portion 31 of the defocusing zone 3 is set as a circular protrusion with a diameter of 1.07 mm. The distance between each defocusing point is 0.395 mm. The number of unit defocusing portions 31 in the defocusing zone 3 is 462.

[0097] The fog sand unit 41 of the fog sand area 4 is set as a circular groove with a diameter of 0.25 mm. The distance between two adjacent fog sand units 41 in the same ring of the same fog sand belt is set to 0.32 mm, and the distance between adjacent rings of the fog sand belt is set to 0.55 mm.

[0098] The present invention also provides optimized embodiment 4-embodiment 11

[0099]

[0100]

[0101] Example 12

[0102] The difference between Example 12 and Example 1 is that:

[0103] like Figure 8 As shown, the lens 1 is configured as a convex lens, and the unit defocusing portion 31 is configured as a groove to form negative defocus. This embodiment is mainly aimed at hyperopic children with short eye axes or hyperopic children with amblyopia.

[0104] The fog and sand multi-point defocus lens is a hyperopia lens.

[0105] During actual use, light enters through the optical correction area 2 and is focused on the retina through the center of the pupil, with a clear image. Light enters through the defocus area 3 and is imaged behind the retina, with a delayed image and exhibiting hyperopic negative defocus. The delayed light sensation stimulates the extension of the eye axis. Light enters through the fog and sand area 4, and its brightness and contrast are significantly weakened.

[0106] The hyperopia lens of this structure has a good vision correction effect, and through the hyperopia negative defocus of the defocus zone 3, as shown in FIG. Figure 8 As shown, optical imaging lag is created. Through the principle of optical imaging lag, the eyeball will follow the light and grow. For children with underdeveloped eyeballs and short eye axes due to congenital amblyopia or hyperopia, wearing negative defocus produces hundreds of brighter imaging lag light sensations that fall on the retina to form hyperopic negative defocus, which stimulates the eye axis to stretch and extend. The main visual area and the defocus area are surrounded by the interference of the fog and sand area 4, which filters part of the light and reduces the imaging contrast. The blur of the fog and sand area 4 is used to prevent the eyeball from choosing this position for long-term viewing, thus avoiding the formation of strabismus over time. In combination with the defocus area 3, it can effectively inhibit the deepening of hyperopia and shorten the time for the eyes to become emmetropia.

[0107] Another alternative, for children who are about to develop myopia or hyperopia reserve insufficient adjacent to the critical point, unit defocus 31 can also be set to convex, forming imaging positive defocus ahead, using the principle of imaging ahead, delay the time of children's hyperopia to myopia.

[0108] Embodiment 13

[0109] Embodiment 13 is based on any of the above embodiments:

[0110] The present application provides a kind of glasses, the glasses include the foggy sand multi-point defocus lens.

[0111] The glasses with the foggy sand multi-point defocus lens not only have good vision correction effect, but also can effectively inhibit vision deepening, stabilize eye position and prevent strabismus during wearing.

[0112] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0113] In addition, in the description of the present application, "a plurality of", "several" means at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0114] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0115] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fog and sand multi-point defocus lens, characterized in that, The lens comprises an optical correction zone, a defocus zone and a haze zone, wherein: The optical correction zone is arranged at a middle position of the lens; The defocus zone and the haze zone are arranged in sequence from inside to outside outside the optical correction zone; The haze zone is arranged in a ring shape; the haze zone comprises a plurality of haze bands arranged in sequence from inside to outside, the haze bands comprise a plurality of circumferentially uniformly distributed haze units, an inner diameter of the haze zone is 37.6 mm, an outer diameter is 65.1 mm, a distance between two adjacent haze units on the same haze band is 0.32 mm, and a spacing between adjacent haze bands is 0.55 mm; The haze unit is arranged in a cross-shaped protrusion, a circular protrusion, a cross-shaped groove or a circular groove, and the haze unit is formed by laser engraving.

2. The foggy multi-point vergence lens of claim 1, wherein, The defocus zone comprises a plurality of annular defocus bands arranged in sequence from inside to outside; The annular defocus band comprises a plurality of circumferentially arranged unit defocus portions.

3. The fog and sand multi-point vergence lens of claim 2, wherein, The optical correction zone is arranged in a circular or regular hexagonal shape; The shape of the annular defocus band is adapted to the shape of the optical correction zone.

4. The fog and sand multi-point vergence lens of claim 2, wherein, The spacing between two adjacent unit defocus portions on the same annular defocus band is the same.

5. The fog and haze multi-point defocus lens of claim 2, wherein, The unit defocus portion is arranged in a circular shape.

6. The foggy multi-point vergence lens of any of claims 2-5, wherein, The lens is arranged as a concave lens, and the unit defocus portion is arranged as a protrusion.

7. The foggy multi-point vergence lens of any of claims 2-5, wherein, The lens is arranged as a convex lens, and the unit defocus portion is arranged as a groove or a protrusion.

8. Eyeglasses, characterized in that, The haze multi-point defocus lens of any one of claims 1-7.

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