CN115202070A - Novel composite myopia prevention and control spectacle lens and forming method - Google Patents
Novel composite myopia prevention and control spectacle lens and forming method Download PDFInfo
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- CN115202070A CN115202070A CN202210836735.2A CN202210836735A CN115202070A CN 115202070 A CN115202070 A CN 115202070A CN 202210836735 A CN202210836735 A CN 202210836735A CN 115202070 A CN115202070 A CN 115202070A
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- 208000001491 myopia Diseases 0.000 title claims abstract description 52
- 230000004379 myopia Effects 0.000 title claims abstract description 51
- 230000002265 prevention Effects 0.000 title claims abstract description 48
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- 210000004087 cornea Anatomy 0.000 description 2
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The application relates to the technical field of myopia prevention and control, and discloses a novel compound myopia prevention and control lens and forming method, this novel compound myopia prevention and control lens includes: the functional layer comprises a base material and a plurality of annular structures formed on one side of the base material, the annular structures are coaxially distributed at intervals, and in a cross section of the spectacle lens in any thickness direction, the volume of the annular structures is increased along the direction from the center of the spectacle lens to the periphery; and the protective layer is formed on the light incident surface of the functional layer, and is attached to one side of the substrate and a plurality of peripheries of the annular structures. Because the number of degrees at lens center is different with the number of degrees of periphery, in the cross-section of arbitrary thickness direction, the volume of a plurality of ring structures is the growth trend from inside to outside for out of focus volume is the growth trend, and different volumes correspond different refraction and change the setting, play better myopia prevention and control effect.
Description
Technical Field
The application relates to the technical field of myopia prevention and control, in particular to a novel composite myopia prevention and control spectacle lens and a forming method.
Background
The conventional myopia correction lens is a concave lens with a single degree, and due to the approximately spherical structure of the eyeball and the ellipsoidal structure of the cornea, the lens with a single luminosity can cause the central vision to be just corrected, and the peripheral vision is in an over-correction state, so that the backward growth of the eyeball is caused, and the aggravation of myopia is caused.
Disclosure of Invention
The application provides a novel composite myopia prevention and control spectacle lens and a forming method, and improves the myopia prevention and control effect of the spectacle lens.
In a first aspect, the present application provides a novel composite myopia prevention and control spectacle lens, which includes a functional layer, including a substrate and a plurality of annular structures formed on one side of the substrate, the plurality of annular structures are coaxially and spaced apart, and in a cross section of the spectacle lens in any thickness direction, along a direction from the center of the spectacle lens to the periphery, the volume of the plurality of annular structures increases progressively; and the protective layer is formed on the light incident surface of the functional layer, and is attached to one side of the substrate and the peripheries of the plurality of annular structures.
In an embodiment of the present application, the plurality of ring structures protrude from the surface of the substrate.
In one embodiment of the present application, the substrate is circular in shape.
In one embodiment of the present application, the plurality of annular structures increases in size in the radial direction and/or increases in size in the axial direction in a direction from the center of the ophthalmic lens towards the outer periphery.
In one embodiment of the present application, the functional layer includes 14 ring structures, and the ring structures are disposed at equal intervals.
In one embodiment of the present application, in a direction toward the outer periphery from the center of the spectacle lens, the annular structures include five first annular structures, four second annular structures, three third annular structures, and two fourth annular structures; the size of the first annular structure in the radial direction is a first width D1, the size of the first annular structure in the axial direction is a first height H1, the size of the second annular structure in the radial direction is a second width D2, the size of the second annular structure in the axial direction is a second height H2, the size of the third annular structure in the radial direction is a third width D3, the size of the third annular structure in the axial direction is a third height H3, the size of the fourth annular structure in the radial direction is a fourth width D4, and the size of the fourth annular structure in the axial direction is a fourth height H4; wherein the first height H1 of the first ring-shaped structure is less than the second height H2 of the second ring-shaped structure is less than the first height H3 of the third ring-shaped structure is less than the fourth height H4 of the fourth ring-shaped structure, and the first width D1 of the first ring-shaped structure is less than the second width D2 of the second ring-shaped structure is less than the first width D3 of the third ring-shaped structure is less than the fourth width D4 of the fourth ring-shaped structure.
In an embodiment of the present application, the functional layer and the protective layer are made of materials with different refractive indexes.
In one embodiment of the present application, the functional layer has a first refractive index, the protective layer has a second refractive index, and an absolute value of a difference between the first refractive index and the second refractive index is between 0.1 and 0.15.
In an embodiment of the present application, the functional layer is made of one of a resin and a polycarbonate material, and the protective layer is made of the other of the resin and the polycarbonate material.
In a second aspect, the embodiment of the present application provides a method for forming a novel composite myopia prevention and control spectacle lens, including:
forming a functional layer by casting, wherein the functional layer comprises a base material and a plurality of annular structures which are coaxially arranged at intervals on one side of the base material, and the volume of the plurality of annular structures is increased gradually along the direction from the center of the spectacle lens to the periphery in the cross section of the spectacle lens in any thickness direction;
and forming a protective layer on the light incident surface of the functional layer, wherein the protective layer covers one side of the substrate and the peripheries of the plurality of annular structures.
In a second aspect, the present application provides a method for forming a novel composite myopia prevention and control spectacle lens, including:
forming a functional layer in a pouring mode, wherein the functional layer comprises a base material and a plurality of annular structures which are coaxially arranged at intervals on one side of the base material, and the volume of the plurality of annular structures increases progressively in a unit arc length along the direction from the center of the spectacle lens to the periphery;
and forming a protective layer on the light incident surface of the functional layer, wherein the protective layer covers one side of the substrate and the peripheries of the plurality of annular structures.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the embodiment of this application provides a novel compound myopia prevention and control lens, include: the functional layer comprises a base material and a plurality of annular structures formed on one side of the base material, the annular structures are coaxially distributed at intervals, and the volume of the annular structures is increased along the direction from the center to the periphery of the spectacle lens in any cross section of the spectacle lens in the thickness direction; the protective layer is formed on the light incident surface of the functional layer and is attached to one side of the base material and the peripheries of the plurality of annular structures; on one hand, the central power and the peripheral power of the spectacle lens are different, and on any cross section in the thickness direction, the volumes of the plurality of annular structures increase from inside to outside, so that the defocusing amount increases, and the different volumes from inside to outside correspond to different refractive change settings, thereby achieving a better myopia prevention and control effect; on the other hand, the functional layer is hidden in the spectacle lens by the protective layer, and is safer than the functional layer exposed on the surface, so that damage and scratch are prevented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a front view of a novel composite myopia prevention and control spectacle lens provided in an embodiment of the present application;
FIG. 2 is a side view of a cross section in any thickness direction of a novel composite myopia prevention and control spectacle lens provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of the imaging of the light of the novel composite myopia prevention and control spectacle lens provided by the embodiment of the application in the central area of the spectacle lens;
fig. 4 is a schematic structural diagram of light imaging of the novel composite myopia prevention and control spectacle lens provided by the embodiment of the present application;
FIG. 5 is a schematic structural diagram of imaging light rays on a ring-shaped structure and a substrate of the novel composite myopia prevention and control spectacle lens provided by the embodiment of the application;
fig. 6 is a flowchart of a method for forming a novel composite myopia prevention and control spectacle lens according to the second embodiment of the present application.
Reference numerals:
1. a functional layer; 11. a substrate; 12. a cyclic structure; 121. a first cyclic structure; 122. a second annular structure; 123. a third cyclic structure; 124. a fourth ring-shaped structure; 2. and a protective layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Conventional myopia correction lenses are concave lenses of a single degree, and because the eyeball is of a structure similar to a sphere, and in addition, due to the ellipsoidal structure of the cornea, a lens of a single luminosity can cause the central vision to be just corrected, and the peripheral vision is in an overcorrected state, so that backward growth of the eyeball is caused, and the aggravation of myopia is caused.
In view of the above problems, the present application provides a novel composite myopia prevention and control spectacle lens and a molding method thereof, and the following describes the novel composite myopia prevention and control spectacle lens and the molding method thereof in detail with reference to the accompanying drawings.
First embodiment about novel composite myopia prevention and control spectacle lens
As shown in fig. 1-2, the present application provides a novel composite myopia prevention and control spectacle lens, comprising: a functional layer 1 including a base material 11 and a plurality of annular structures 12 formed on one side of the base material 11, the plurality of annular structures 12 being coaxially and spaced apart from each other, a volume of each of the plurality of annular structures 12 increasing in a direction from a center of the spectacle lens toward an outer periphery in a cross section of the spectacle lens in any thickness direction; and the protective layer is formed on the light incident surface of the functional layer 1, and is attached to one side of the substrate 11 and the peripheries of the plurality of annular structures 12.
On one hand, because the central power and the peripheral power of the spectacle lens are different, on any section in the thickness direction, the volumes of the plurality of annular structures 12 are in an increasing trend from inside to outside, so that the defocusing amount is in an increasing trend, and the different volumes from inside to outside correspond to different refractive change settings, thereby achieving a better myopia prevention and control effect; on the other hand, the functional layer 1 is hidden inside the spectacle lens by the protective layer, and is safer than being exposed on the surface, and damage and scratch are prevented.
As shown in fig. 3, a plurality of parallel light rays are refracted through the central area of the spectacle lens and then deflected, no medium change exists in the midway, and the light rays are transmitted through the eyeball in a straight line and then just form an image on the retina clearly.
As shown in fig. 4, a plurality of parallel light rays are refracted by the spectacle lens and then deflected, and are converged into a point in front of the retina, and then form a discrete light band on the retina.
As shown in fig. 5, four parallel rays a, B, C, D pass through the substrate 11 without the ring structure 12, and directly form a 'and B' without any change in the distribution in one direction, and two rays C, D pass through the cylindrical lens formed by the ring structure 12 and intersect at a point, i.e., C 'and D', in front of the retina to converge in one direction.
It will be appreciated by those skilled in the art that the ophthalmic lens may be circular or elliptical, and if the ophthalmic lens is circular, the corresponding plurality of annular structures 12 may be concentric structures, or alternatively, a plurality of nested elliptical structures, and if the ophthalmic lens is elliptical, the corresponding plurality of annular structures 12 may be concentric structures, or alternatively, a plurality of nested elliptical structures. The following description will be given taking as an example a spectacle lens in the shape of a circle and a plurality of concentric circles coaxially arranged with the spectacle lens for each of the plurality of annular structures 12:
in some embodiments, the plurality of annular structures 12 all protrude from the surface of the substrate 11, the plurality of annular structures 12 converge the parallel light rays entering the position, and refraction on the inner surface of the novel composite myopia prevention and control spectacle lens is combined to finally enable the light rays to form an image in front of the retina, which is an out-of-focus area, that is, the light rays form an annular out-of-focus aperture respectively through the plurality of annular structures 12 and are not imaged behind the retina, so that the backward growth tendency of the retina is reduced, and the myopia prevention and control effect is achieved.
As can be seen from the above, the plurality of annular structures 12 increases in size in the radial direction and/or increases in size in the axial direction in the direction from the center of the ophthalmic lens towards the periphery. That is, along the direction of lens center towards the periphery, at least one in width and the height of a plurality of ring structure 12 increases progressively, and from inside to outside, a plurality of ring structure 12 under the same arc length condition, the volume increase corresponds different ring structure 12 of different refraction settings inside and outside the lens, and this ring structure 12 is out of focus ring, realizes the better correspondence of each refraction area, further strengthens near-sighted prevention and control effect.
As shown in fig. 1-2, in some embodiments, the functional layer 1 includes 14 annular structures 12, i.e., 14 defocused rings, the annular structures 12 are disposed at equal intervals, and the distance between adjacent annular structures 12 is 1mm. In particular, in the direction in which the centre of the spectacle lens faces towards the periphery, the annular structure 12 comprises five first annular structures 121, four second annular structures 122, three third annular structures 123 and two fourth annular structures 124; wherein a dimension of the first annular structure 121 in the radial direction is a first width D1, the first width D1=0.6mm, a dimension of the first annular structure 121 in the axial direction is a first height H1, the first width H1=0.0007mm; the second annular structure 122 has a dimension in the radial direction of a second width D2, the second width D2=0.8mm, the second annular structure 122 has a dimension in the axial direction of a second height H2, the second width H2=0.00075mm; the third annular structure 123 has a dimension in the radial direction of a third width D3, the third width D3=1mm, the third annular structure 123 has a dimension in the axial direction of a third height H3, the third width H3=0.0008mm; the fourth ring-shaped structure 124 has a dimension in the radial direction of a fourth width D4, the fourth width D4=1.2mm, the fourth ring-shaped structure 124 has a dimension in the axial direction of a fourth height H4, and the fourth width H4=0.00085mm.
Through the arrangement, the first height H1 of the first annular structure 121 is less than the second height H2 of the second annular structure 122 is less than the first height H3 of the third annular structure 123 is less than the fourth height H4 of the fourth annular structure 124, and the first width D1 of the first annular structure 121 is less than the second width D2 of the second annular structure 122 is less than the first width D3 of the third annular structure 123 is less than the fourth width D4 of the fourth annular structure 124, so that for a plurality of annular structures 12, under the same arc length, the volume of the annular structure 12 close to the periphery of the spectacle lens is greater than or equal to the volume of the annular structure 12 close to the center of the spectacle lens, and different annular structures 12 correspond to different dioptric regions to be set in a changing way, thereby improving the myopia prevention and control effect.
In this embodiment, first annular structure 121, second annular structure 122, third annular structure 123 and fourth annular structure 124 are circular, and the internal diameter of first annular structure 121 is 10mm, the lens is the circular lens, the diameter of circular lens is 70mm, is equivalent to evenly arrange 14 annular structures 12 on the annular structure 12 that the ring width is 30mm, sets up 14 out of focus rings to make all light image on the retina after the refraction of each out of focus ring of lens, improve the imaging effect.
In this embodiment, the functional layer 1 and the protective layer are made of two materials having different refractive indexes. Specifically, the functional layer 1 is made of a material with a high refractive index, the protective layer is made of a material with a low refractive index, and the thickness of the novel composite myopia prevention and control spectacle lens is reduced by the material with the low refractive index. In particular, the functional layer 1 has a first refractive index and the protective layer has a second refractive index, the absolute value of the difference between the first and second refractive indices being between 0.1 and 0.15. If the difference is less than 0.1, the thickness of the protective layer cannot be reduced, and if the difference is greater than 0.15, the problem of optical interference occurs, which is not favorable for imaging.
According to an embodiment of the present application, the functional layer 1 is made of one of a resin and a polycarbonate material, and the protective layer is made of the other of a resin and a polycarbonate material. Specifically, the functional layer 1 is made of a resin material, and the protective layer is made of another one of polycarbonate materials. The resin is generally an organic polymer which has a softening or melting range after being heated, tends to flow by an external force when softened, and is solid, semi-solid, or liquid at room temperature. Polycarbonate (abbreviated as PC in English), also known as PC plastic; the polymer is a high molecular polymer containing carbonate groups in the molecular chain, and can be classified into various types such as aliphatic, aromatic, aliphatic-aromatic and the like according to the structure of the ester groups.
In addition, the functional layer 1 and the protective layer may also be made of polymethyl methacrylate (PMMA), which is a high molecular polymer, also called as acrylic or organic glass, having the advantages of high transparency, low price, easy machining, etc., and is a commonly used glass substitute material, or polyethylene terephthalate (PET), having a chemical formula of (C) 10 H 8 O 4 ) n Is prepared by exchanging or esterifying terephthalic acid and ethylene glycol to synthesize dihydroxyethyl terephthalate and then carrying out polycondensation reaction, and has the advantages of wide temperature rangeThe high-temperature-resistant and high-frequency-resistant composite material has excellent physical and mechanical properties, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, the electrical property is still good even at high temperature and high frequency, but the corona resistance, the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good.
About the novel compound myopia prevention and control lens of this application embodiment, its one side of pressing close to the eye is the first surface, what set up mutually with the first surface mutually is the second surface, the first surface is sunken to the lens is inside, the second surface is to keeping away from the lens direction protrusion, and the radius of curvature on first surface and second surface is different, parallel light is through a plurality of bellied loop configuration 12, the first surface refraction that combines novel compound myopia prevention and control lens finally makes light form images before the retina, reduce the backward growth trend of retina, play myopia prevention and control effect.
Second embodiment of the method for forming a new composite myopia prevention and control spectacle lens
On the basis of the first embodiment, as shown in fig. 6, the embodiment of the present application provides a method for forming a novel composite myopia prevention and control eyeglass, which includes:
s1, forming a functional layer 1 in a pouring mode, wherein the functional layer 1 comprises a base material 11 and a plurality of annular structures 12 which are coaxially arranged on one side of the base material 11 at intervals, and the volume of the plurality of annular structures 12 in a unit arc length is increased gradually along the direction from the center of the spectacle lens to the periphery;
and S2, forming a protective layer on the light incident surface of the functional layer 1, wherein the protective layer covers one side of the substrate 11 and the peripheries of the plurality of annular structures 12.
This application embodiment forms functional layer 1 through the mode of pouring, and functional layer 1 includes a plurality of ring structures 12 of coaxial and interval setting on one side of substrate 11 and substrate 11, follows the lens center is towards the direction of periphery, and is a plurality of ring structure 12 increases progressively at the volume of unit arc length, because the number of degrees at lens center and the number of degrees of periphery are different, on the cross-section of arbitrary thickness direction, the volume of a plurality of ring structures 12 is the growth trend from inside to outside for out of focus volume is the increase trend, the different volume corresponds different refraction change settings from inside to outside, plays better myopia prevention and control effect, in addition, ring structure 12 becomes cyclic annular out of focus diaphragm, can not form images behind the retina, reduces the backward growth trend of retina, plays better myopia prevention and control effect; the protective layer covers the light incident surface of the functional layer 1, the functional layer 1 is hidden inside the spectacle lens by the protective layer, and the protective layer is safer than the protective layer exposed on the surface, so that damage and scratch are prevented.
In the step S1, a mold is used to obtain the functional layer 1, the mold includes a distance lens blank, a near lens blank, an inner side lens blank and an outer side lens blank, and at least one blank is provided with a glue injection hole, the distance lens blank, the near lens blank, the inner side lens blank and the outer side lens blank are assembled in a butt joint manner to form a hollow cavity, resin glue is injected from the glue injection hole, and a demolding treatment is performed after the functional layer 1 is formed in the cavity.
In addition, when processed in the step S2, the functional layer 1 and the protective layer with different refractive indexes are bonded together by a hot-melt bonding process or the like, and any defects such as bubbles and delamination cannot exist therebetween. It should be noted that in the description and claims of the present application and the above drawings, relational terms such as "first" and "second", and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used may be interchanged under appropriate circumstances such that, for example, the embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein.
Moreover, the terms "comprises," "comprising," and "having," as well as any variations thereof, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, the articles or devices defined by the phrases "comprising a component 8230; \8230;" defined "does not exclude the presence of additional identical components in the processes, methods, articles or devices that comprise the recited component.
For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications and alterations to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A novel compound myopia prevention and control spectacle lens is characterized by comprising:
a functional layer including a base material and a plurality of annular structures formed on one side of the base material, the plurality of annular structures being coaxially and spaced apart, and a volume of each of the plurality of annular structures increases in a cross section of the spectacle lens in any thickness direction along a direction from a center of the spectacle lens to an outer periphery thereof; and
the protective layer, the protective layer form in the income plain noodles of functional layer, the protective layer laminating substrate one side and a plurality of the ring structure periphery.
2. The novel composite myopia prevention and control spectacle lens of claim 1, wherein the plurality of annular structures each protrude from the surface of the base material.
3. The novel composite myopia prevention and control spectacle lens of claim 1, wherein the substrate is circular in shape.
4. The novel composite myopia prevention and control spectacle lens of claim 3, wherein the plurality of annular structures increase in size in the radial direction and/or increase in size in the axial direction in a direction from the center of the spectacle lens toward the periphery.
5. The novel composite myopia prevention and control spectacle lens of claim 3, wherein the functional layer comprises 14 annular structures, and the annular structures are arranged at equal intervals adjacent to each other.
6. The novel composite myopia prevention and control spectacle lens of claim 5, wherein the annular structures comprise five first annular structures, four second annular structures, three third annular structures and two fourth annular structures in a direction from the center of the spectacle lens to the periphery;
the size of the first annular structure in the radial direction is a first width D1, the size of the first annular structure in the axial direction is a first height H1, the size of the second annular structure in the radial direction is a second width D2, the size of the second annular structure in the axial direction is a second height H2, the size of the third annular structure in the radial direction is a third width D3, the size of the third annular structure in the axial direction is a third height H3, the size of the fourth annular structure in the radial direction is a fourth width D4, and the size of the fourth annular structure in the axial direction is a fourth height H4; wherein
The first height H1 of the first ring-shaped structure < the second height H2 of the second ring-shaped structure < the first height H3 of the third ring-shaped structure < the fourth height H4 of the fourth ring-shaped structure, and the first width D1 of the first ring-shaped structure < the second width D2 of the second ring-shaped structure < the first width D3 of the third ring-shaped structure < the fourth width D4 of the fourth ring-shaped structure.
7. The novel composite myopia prevention and control spectacle lens of claim 1, wherein the functional layer and the protective layer are made of materials with different refractive indexes.
8. The novel composite myopia prevention and control spectacle lens of claim 7, wherein the functional layer has a first refractive index and the protective layer has a second refractive index, and the absolute value of the difference between the first refractive index and the second refractive index is between 0.1 and 0.15.
9. The novel composite myopia prevention and control spectacle lens of claim 7 or 8, wherein the functional layer is made of one of resin and polycarbonate, and the protective layer is made of the other of resin and polycarbonate.
10. A forming method of a novel composite myopia prevention and control spectacle lens is characterized by comprising the following steps:
forming a functional layer by casting, wherein the functional layer comprises a base material and a plurality of annular structures which are coaxially arranged at intervals on one side of the base material, and the volume of the plurality of annular structures is increased gradually along the direction from the center of the spectacle lens to the periphery in the cross section of the spectacle lens in any thickness direction;
and forming a protective layer on the light incident surface of the functional layer, wherein the protective layer covers one side of the substrate and the peripheries of the plurality of annular structures.
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| CN202210836735.2A CN115202070A (en) | 2022-07-15 | 2022-07-15 | Novel composite myopia prevention and control spectacle lens and forming method |
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| CN202210836735.2A CN115202070A (en) | 2022-07-15 | 2022-07-15 | Novel composite myopia prevention and control spectacle lens and forming method |
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| TWI827339B (en) * | 2022-11-04 | 2023-12-21 | 黃上人 | Myopia control contact lenses for children |
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