CN218601620U - Myopia out of focus lens and glasses with free curved surface structure - Google Patents
Myopia out of focus lens and glasses with free curved surface structure Download PDFInfo
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- CN218601620U CN218601620U CN202223303415.5U CN202223303415U CN218601620U CN 218601620 U CN218601620 U CN 218601620U CN 202223303415 U CN202223303415 U CN 202223303415U CN 218601620 U CN218601620 U CN 218601620U
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Abstract
The utility model relates to a myopia out of focus lens with free curved surface structure, include: a lens body, the lens body comprising: a first region and a second region; the first region is a circular/approximately circular central region, and the second region is located radially outside the first region; the second region comprises a micro-lens array formed by a plurality of micro-lenses and arranged on the convex surface of the myopic out-of-focus lens; and a free-form surface structure having different radii of curvature formed on the concave surface of the lens body. The glasses with the myopic out-of-focus lenses of the free-form surface structure can provide the variable out-of-focus amount, and effectively reduces imaging aberration to enable imaging to be more stable.
Description
Technical Field
The utility model relates to an ophthalmology lens specifically relates to a myopia out of focus lens and glasses with free curved surface structure.
Background
One of the effective means for controlling the myopia progression clinically proven at present is to control the growth of the axis of the eye through peripheral defocus so as to slow down the myopia progression.
Therefore, for axial myopia children with different myopia degrees, the myopia prevention and control lens with the defocus amount suitable for the eyeball condition, the myopia degree and the like needs to be worn to achieve the effect of effectively reducing and/or controlling the myopia deepening.
However, in the existing out-of-focus lenses, such as Haoyan New Lexus (Chinese patent publication No. CN 104678572A), the out-of-focus amount of the lenses is fixed, and the effect of reducing the myopia is not ideal for teenagers with high myopia or longer eye axis. However, if the defocus amount of the lens is increased, a large aberration is brought, so that a user feels dizzy when wearing the lens, the use experience of the user is greatly reduced, and the lens cannot be used.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problems in the prior art, the utility model provides a myopia out of focus lens and glasses with free curved surface structure when can provide the out of focus volume that changes, effectively reduces the formation of image aberration for it is more stable to form images.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
in a first aspect, a myopic out-of-focus lens having a free-form surface structure comprises:
a lens body, the lens body comprising: a first region and a second region; the first region is a circular/approximately circular central region, and the second region is located radially outside the first region;
the second area includes a microlens array formed of a plurality of microlenses, disposed on a convex surface of the myopic defocus lens; and a free-form surface structure having different radii of curvature formed on the concave surface of the lens body.
Further, the first region is an optical central region that enables the light beam to be focused on the retina,
the microlens array and the free-form surface structure of the second region constitute a peripheral out-of-focus region that enables the beam to be focused on or in front of the retina.
Further, the defocus amount of the second region is sequentially increased along the radial direction of the lens body.
Further, in the second region, the minimum radius of curvature of the free-form surface structure is equal to or greater than the radius of curvature of the concave surface.
Further, in the second region, the radius of curvature of the free-form surface structure increases sequentially radially outward of the lens body.
Further, the free-form surface structure comprises a first curved surface structure, a second curved surface structure and a third curved surface structure;
the first curved surface structure is formed in the temporal area of the lens body, the curvature radius is P1,
the second curved surface structure is formed in the area below the partial nose of the lens body, and the curvature radius is P2;
the third curved surface structure is formed in an area above the lens body when the myopic out-of-focus lens is in a use state, and the curvature radius is P3;
wherein P1 > P2 > P3.
Further, the microlens array on the convex surface is formed by n concentrically arranged defocused rings, and the diameters of the n defocused rings are sequentially increased outwards along the radial direction; the value of n is any one of 8 to 12.
Furthermore, the planar shape of each micro lens in the micro lens array is a regular polygon or a circle, the diameter of each micro lens is 0.8-1.5mm, and adjacent micro lenses in the same defocusing ring are arranged in a connected mode;
the radial distance between the adjacent defocusing rings is 2-8mm.
Further, the optical center region is 7.5-12mm in diameter.
In a second aspect, glasses with free-form surface structures are provided, and the glasses comprise the myopic out-of-focus lens with the free-form surface structures.
(III) advantageous effects
The beneficial effects of the utility model are that:
first, through set up the microlens array on the lens body for when using this myopia out of focus lens, the light beam that gets into user's eyes forms myopia out of focus, and object formation of image is in retina the place ahead, can avoid the axis of the eye to increase, delays and/or control myopia and deepens.
Secondly, the utility model provides a myopia out of focus lens, especially to the higher user group of myopia number of degrees, on the concave surface of lens body second region, the region of the microlens array that corresponds convex surface forms the free curved surface structure, cooperates the microlens array that the convex surface of lens body set up, makes myopia out of focus lens has the out of focus volume of increase in radial outside orientation, can effectively reduce the aberration when guaranteeing out of focus effect, has greatly improved the user and has worn the experience and feel.
Thirdly, for further improving the user and wearing experience, the curvature radius of the free-form surface structure is gradually increased in the radial outward direction of the lens body, and then the defocusing amount is adjusted, and the wearing comfort of the user is guaranteed.
Fourthly, the free-form surface structure which can lead the defocus change of the myopic defocusing lens is arranged on the concave surface nearest to the eyes of the user when the user wears the glasses, and the adjacent micro lenses in the micro lens array are arranged in a connected mode, so that the passing light beam cannot have two different imaging principles, and the imaging stability is further improved.
Drawings
Fig. 1 is a schematic diagram of the convex surface side of the myopic defocus lens provided by the present invention;
fig. 2 is a schematic diagram of the concave surface side of the myopic defocus lens provided by the present invention;
fig. 3 is a schematic cross-sectional view of the myopic out-of-focus lens provided by the utility model.
[ description of reference ]
100: a lens body; 10: a convex surface; 20: a concave surface;
11: an optical central region; 12: a microlens array; 13: a defocused ring;
21: a first curved surface structure; 22: a second curved surface structure; 23: a third curved surface structure; 24: a free-form surface structure;
p1: a first radius of curvature; p2: a second radius of curvature; p3: a third radius of curvature.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. However, these specific embodiments do not limit the scope of the present invention in any way.
By out-of-focus, it is meant that the image that should be focused on the retina is not focused on the retina, but is focused in front of or behind the retina. Focusing behind the retina is called hyperopic defocus, and focusing in front of the retina is called myopic defocus. Hyperopic defocus induces compensatory increases in the axis of the eye, thereby resulting in increased myopia.
Example 1
As shown in fig. 1 to 3, the present embodiment provides a myopic out-of-focus lens with a free-form surface structure, comprising:
a lens body 100, the lens body 100 comprising: a first region and a second region; the first region is a circular/approximately circular central region, and the second region is located radially outside the first region; the second region includes a microlens array 12 formed of a plurality of microlenses, provided on the convex surface 10 of the lens body 100; and a free-form surface structure 24 having different radii of curvature formed on the concave surface 20 of the lens body 100.
Further, the first area is an optical central area 11 enabling the light beam to be focused on the retina, and the microlens array 12 and the free-form surface structure 24 of the second area constitute a peripheral out-of-focus area enabling the light beam to be focused in front of the retina.
Through the arrangement of the micro lens array 12 and the free-form surface structure 24, when the myopia out-of-focus lens is used, light beams entering eyes of a user form myopia out-of-focus, an object is imaged in front of a retina, the increase of an axis of the eye can be avoided, and the myopia can be delayed and/or controlled.
And, the defocus amount of the peripheral defocus area is sequentially increased outward in the radial direction of the lens body 100. To some users that myopia number of degrees is higher or the axis of the eye is longer, the myopia out of focus lens that this embodiment provided has the out of focus volume of increase in radial outside orientation, can effectively reduce the aberration when guaranteeing out of focus effect, has greatly improved the user and has worn the experience and feel.
Meanwhile, the free-form surface structure 24 forms a concave surface nearest to the eyes of the user when the user wears the glasses, and the adjacent microlenses in the microlens array are arranged in a connected mode, so that two different imaging principles of passing light beams cannot exist, and the imaging stability is further improved.
Further, in the second region, the minimum radius of curvature of the free-form surface structure 24 is equal to or greater than the radius of curvature of the concave surface 20.
It should be added that the power of the optical central zone 11 depends on the radius of curvature of the convex surface 10 of the lens body 100 and the radius of curvature of the concave surface 20, which causes the light beam to be focused on the retina of the user's eye. That is, the optical power of optical central zone 11 is adapted to the power required by the user.
Further, in the second region, the radius of curvature of the free-form surface structure 24 increases in sequence radially outward of the lens body 100. Because the larger the radius of curvature of the free-form surface structure 24, the smaller the refractive power of the lens body 100, the greater the defocus, which greatly increases the likelihood that a beam entering the user's eye through the peripheral defocus region will be imaged in front of the retina. In the present embodiment, the radius of curvature of the free curved surface region 24 is preferably set so that the defocus amount of the peripheral defocus region ranges from +3.00D to + 6.00D.
Further, in the present embodiment, the free-form surface structure 24 may be divided into the first curved surface structure 21, the second curved surface structure 22 and the third curved surface structure 23 according to the eye condition or the eye habit of the human. The first curved surface structure 21 is formed on the temporal side area of the lens body 100, that is, the lens area close to the ear of the user, and the curvature radius is P1. The second curved surface structure 22 is formed in the area of the lens body 100 under the nose, and has a radius of curvature P2. The third curved surface structure 23 is formed in the upper area of the lens body 100 when the myopic out-of-focus lens provided by the present embodiment is in the use state, and the curvature radius is P3; wherein P1 > P2 > P3.
That is, the radius of curvature P3 of the third curved surface structure 23 is closer to the second radius of curvature of the concave surface 20, ensuring wearing comfort with a smaller defocus amount. When the user wears the glasses, more regions under the nose are used, and the curvature radius P2 of the second curved surface structure 22 is set to be only smaller than the curvature radius P1 of the first curved surface structure 21, so that the degree of the myopic defocus lens in the second curved surface structure 22 can be lower than that of the optical central region 11 to a certain degree, and when a certain defocus amount is obtained, no large aberration exists. The area which can not be used by the user when using the eye, that is, the area where the first curved surface structure 21 is located in the embodiment, adopts the largest curvature radius P1, so that the degree of the myopic defocus lens in the area is lower than the degrees of the optical central area 11, the second curved surface structure 22 and the third curved surface structure 23 on the lens, thereby obtaining a higher defocus amount and ensuring the defocus effect. The arrangement can effectively control the increase of the eye axis of teenagers with high myopia degree and long eye axis under the condition of meeting the diopter requirement of users, delay the myopia deepening and have higher wearing comfort level.
It should be noted that the first curved surface structure 21, the second curved surface structure 22 and the third curved surface structure 23 may have different curvature radii, but still follow the design principle that the lens body 100 sequentially increases in the radial outward direction. Furthermore, the intersection of each curvature radius section, including the intersection of the optical central area 11, the first curved surface structure 21, the second curved surface structure 22 and the third curved surface structure 23, may be in a discontinuous step shape, or may be continuously or gradually joined, and both of them are possible, and may be designed according to different requirements, for example, according to the manufacturing limitation or the limitation of the lens diameter size.
Further, the microlens array on the convex surface 10 is formed by 8-12 concentrically arranged defocused rings 13, and the diameters of the 8-12 defocused rings 13 are sequentially increased outwards in the radial direction. And the radial distance between the adjacent defocused rings is 2-8mm. Since the distance between the defocus rings 13 is too small, the user feels uncomfortable, and the defocus effect is not good when the distance is too large. Wherein, the radially inner side of the defocus ring 13 with the smallest diameter is the optical central area 11 of the myopic defocus lens provided by this embodiment; the diameter of the defocused ring 13 having the largest diameter may be 60-65mm, and preferably, may be 60mm. The defocus amount of the front surface of the lens body 100 in the area of the microlens array 12 is constant, preferably +3.50D.
The planar shape of each micro lens in the micro lens array is a regular polygon or a circle, the diameter of each micro lens is 0.8-1.5mm, and adjacent micro lenses in the same defocusing ring are connected; therefore, the light rays passing through the defocused structure cannot have two different imaging principles, and the imaging stability is further improved. The diameter of each microlens may be the same or may be configured to have a diameter that increases in order radially outward, such as shown in fig. 1. The microlens plane has a regular polygon shape or a circular shape, and preferably, in the present embodiment, may have a circular shape. And the adjacent micro lenses are arranged in a gapless way.
In addition, in the present embodiment, the diameter of the lens body 100 is preferably 70-75mm, and more preferably, may be 70mm, 75mm. Wherein the optical central region 11 of the lens body 100 is circular or approximately circular, preferably about 7.5-12mm in diameter.
Example 2
The embodiment also provides a pair of myopic out-of-focus glasses with the free-form surface structure, which can be non-contact glasses worn by a user, and the glasses comprise the myopic out-of-focus lenses provided by the previous embodiments and a glasses frame. Myopia out of focus lens sets up on the picture frame to when the user worn this myopia out of focus glasses, this myopia out of focus lens is located user's glasses the place ahead, can form images on user's retina or retina the place ahead, makes the user have the field of vision the same with normal eyesight crowd, and can effectively delay myopia degree and deepen.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, adaptations, substitutions and variations of the above embodiments may occur to one of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A myopic out-of-focus lens with a free-form surface structure, comprising:
a lens body, the lens body comprising: a first region and a second region; the first region is a circular/approximately circular central region, and the second region is located radially outside the first region;
the second area includes a microlens array formed of a plurality of microlenses, disposed on a convex surface of the myopic defocus lens; and a free-form surface structure having different radii of curvature formed on the concave surface of the lens body.
2. A myopic out-of-focus lens with a free-form surface structure according to claim 1,
the first region is an optical central region that enables the beam to be focused on the retina,
the microlens array and the free-form surface structure of the second region constitute a peripheral out-of-focus region enabling the light beam to be focused in front of the retina.
3. A myopic out-of-focus lens having a free-form surface structure according to claim 1,
the defocusing amount of the second area is sequentially increased along the radial direction of the lens body.
4. A myopic out-of-focus lens having a free-form surface structure according to claim 3,
in the second region, a minimum radius of curvature of the free-form surface structure is equal to or greater than a radius of curvature of the concave surface.
5. A myopic out-of-focus lens with a free-form surface structure according to claim 3,
in the second region, the radii of curvature of the free-form surface structures increase sequentially radially outward of the lens body.
6. A myopic out-of-focus lens having a free-form surface structure according to claim 4,
the free-form surface structure comprises a first curved surface structure, a second curved surface structure and a third curved surface structure; the first curved surface structure is formed on the temporal area of the lens body, the curvature radius is P1,
the second curved surface structure is formed in the area, which is under the nose, of the lens body, and the curvature radius is P2;
the third curved surface structure is formed in the upper area of the lens body when the myopic out-of-focus lens is in a use state, and the curvature radius is P3;
wherein P1 > P2 > P3.
7. A myopic out-of-focus lens having a free-form surface structure according to claim 1,
the microlens array on the convex surface is formed by n concentrically arranged defocusing rings, and the diameters of the n defocusing rings are sequentially increased outwards along the radial direction; the value of n is any one of 8 to 12.
8. A myopic out-of-focus lens having a free-form surface structure according to claim 7,
the planar shape of each micro lens in the micro lens array is a regular polygon or a circle, the diameter of each micro lens is 0.8-1.5mm, and adjacent micro lenses in the same defocusing ring are connected;
the radial distance between the adjacent defocusing rings is 2-8mm.
9. A myopic out-of-focus lens having a free-form surface configuration as claimed in claim 2,
the optical central region is 7.5-12mm in diameter.
10. An eyeglass with a free-form surface structure, comprising the myopic out-of-focus lens with a free-form surface structure of any one of claims 1-9.
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| CN202223303415.5U CN218601620U (en) | 2022-12-06 | 2022-12-06 | Myopia out of focus lens and glasses with free curved surface structure |
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| CN202223303415.5U CN218601620U (en) | 2022-12-06 | 2022-12-06 | Myopia out of focus lens and glasses with free curved surface structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116027571A (en) * | 2022-12-06 | 2023-04-28 | 首都医科大学附属北京同仁医院 | Myopia defocusing lens and myopia defocusing glasses |
| CN116458837A (en) * | 2023-04-24 | 2023-07-21 | 首都医科大学附属北京同仁医院 | Eyelid force measuring method |
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2022
- 2022-12-06 CN CN202223303415.5U patent/CN218601620U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116027571A (en) * | 2022-12-06 | 2023-04-28 | 首都医科大学附属北京同仁医院 | Myopia defocusing lens and myopia defocusing glasses |
| CN116027571B (en) * | 2022-12-06 | 2023-08-29 | 首都医科大学附属北京同仁医院 | Myopia defocusing lens and myopia defocusing glasses |
| WO2024120048A1 (en) * | 2022-12-06 | 2024-06-13 | 首都医科大学附属北京同仁医院 | Myopic defocus lens and myopic defocus glasses |
| CN116458837A (en) * | 2023-04-24 | 2023-07-21 | 首都医科大学附属北京同仁医院 | Eyelid force measuring method |
| CN116458837B (en) * | 2023-04-24 | 2023-09-19 | 首都医科大学附属北京同仁医院 | Eyelid force measuring method |
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