CN218240583U - Compound clitellum out of focus lens and glasses - Google Patents
Compound clitellum out of focus lens and glasses Download PDFInfo
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- CN218240583U CN218240583U CN202222833773.0U CN202222833773U CN218240583U CN 218240583 U CN218240583 U CN 218240583U CN 202222833773 U CN202222833773 U CN 202222833773U CN 218240583 U CN218240583 U CN 218240583U
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Abstract
The application discloses compound clitellum out of focus lens and glasses, compound clitellum out of focus lens include: a master mirror body including an optical center; a first array disposed on the master mirror body, the first array including at least one set of zones disposed around an optical center; the second array is arranged on the mother lens body and comprises a plurality of micro lens groups; the annular belt is connected with the micro lens group so that the micro lens group is arranged at intervals in the radial direction of the main lens body. This application can avoid on the one hand to be close to the too intensive and cause and wear the discomfort of microlens at optical center, and on the other hand can show to increase blank area microlens quantity layout in order to promote out of focus area in the position of keeping away from optical center to obtain the more lasting out of focus functional that does not influence the clear visual effect in macula lutea center.
Description
Technical Field
The application relates to the technical field of eye vision optics, in particular to a compound annular-belt out-of-focus spectacle lens and spectacles.
Background
The formation of the peripheral defocus of the retina of the lens by the microlens array is a conventional means for overusing the peripheral astigmatism of the retina, but in the existing lens, in order to keep the adaptability of a lens wearer, the defocusing area of the lens accounts for hardly more than 50%, and if the area of the inner circle microlens close to the central bright visual area is increased or the distribution of the microlenses is denser, a certain adaptive risk exists.
Disclosure of Invention
The purpose of the invention is as follows: the application provides a compound annular zone out-of-focus spectacle lens, which aims to solve the problem that the wearing discomfort is caused by the dense distribution of the micro lenses of the existing spectacle lens; it is another object of the present application to provide spectacles comprising the above-described compound zone out-of-focus spectacle lens.
The technical scheme is as follows: the application discloses compound clitellum out of focus lens includes:
a master mirror body comprising an optical center;
a first array disposed on the parent mirror body, the first array comprising at least one set of zones disposed about the optical center;
a second array disposed on the master mirror body, the second array comprising a plurality of microlens sets; the annular belt is connected with the micro lens group, so that the micro lens group is arranged at intervals in the radial direction of the mother lens body.
In some embodiments, the annulus includes a plurality of first microlenses connected to one another, the microlens set including second microlenses including radially disposed first and second ends; the first end and/or the second end is connected to the first microlens.
In some embodiments, the annulus includes a plurality of first microlenses connected to one another; the microlens group includes a plurality of second microlenses radially connected to each other such that the microlens group has a third end and a fourth end in a radial direction; the third end and/or the fourth end are connected with the first micro lens.
In some embodiments, the female lens body includes a first optical surface near the eye side and a second optical surface facing away from the first optical surface;
wherein the first array and the second array are located on the second optical surface; or
The first array and the second array are located on the first optical surface; or
The first array is located on the first optical surface and the second array is located on the second optical surface; or
The first array is located on the second optical surface and the second array is located on the first optical surface.
In some embodiments, the ophthalmic lens comprises a first dioptric zone, a second dioptric zone Qu Guangou and a third dioptric zone; wherein the second dioptric zone comprises the area where the first array covers the mother lens body, the third dioptric zone comprises the area where the second array covers the mother lens body, and the first dioptric zone is the area of the spectacle lens excluding the second Qu Guangou and the third dioptric zone;
wherein the ophthalmic lens satisfies:
|D 1 -D 0 |≥0，|D 2 -D 0 |≥0，|D 3 -D 0 | > 0, and D 2 ≠D 1 ，D 3 ≠D 1 ；
In the formula, D 1 Representing the optical power of the first dioptric area, D 2 Denotes the power of the second dioptric region, D 3 Represents the optical power of the third dioptric area, D 0 Represents the optical power of the optical center.
In some embodiments, the ophthalmic lens further satisfies:
8≥|D 2 -D 1 | is not less than 3, and 3 is not less than | D 3 -D 2 |≥0。
In some embodiments, at least one of the first optical surface and the second optical surface is any one of or a combination of designs of a spherical surface, an aspherical surface, a toroidal surface, a free-form surface.
In some embodiments of the present invention, the,
the diameter of the first micro lens is 0.8-2.0 mm; and/or
The diameter of the second micro lens is 0.5-3 mm; and/or
The annular bands are distributed around the optical center in a triangular, quadrilateral, polygonal, circular or elliptical shape; and/or
The annular belts are arranged equidistantly or non-equidistantly along the radial direction of the female mirror body; the distance between adjacent annuluses is 1-3 mm.
In some embodiments, the second microlenses are aligned along a same straight line in a radial direction of the mother mirror body; or
The second microlenses are arranged in a staggered manner in a radial direction of the mother lens body.
In some embodiments, the present application further provides an eyeglass comprising the compound annulus defocused eyeglass.
Has the beneficial effects that: compared with the prior art, the compound clitellum out of focus lens of this application includes: a master mirror body including an optical center; a first array disposed on the master mirror body, the first array including at least one set of zones disposed around an optical center; the second array is arranged on the mother lens body and comprises a plurality of micro lens groups; the annular belt is connected with the micro lens group so that the micro lens group is arranged at intervals in the radial direction of the main lens body. This application can avoid on the one hand to be close to the too intensive and cause and wear the discomfort of microlens at optical center, and on the other hand can show to increase blank area microlens quantity layout in order to promote out of focus area in the position of keeping away from optical center to obtain the more lasting out of focus functional that does not influence the clear visual effect in macula lutea center.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic front view of a compound annulus defocus ophthalmic lens provided by an embodiment of the present application;
FIG. 2 is a schematic side view of a compound zone through-focus spectacle lens provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of a partial structure of a compound zone out-of-focus spectacle lens according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a partial structure of another compound zone out-of-focus spectacle lens provided in an embodiment of the present application;
FIG. 5 is a schematic front view of another compound zone out-of-focus ophthalmic lens provided by an embodiment of the present application;
reference numerals: 1-mother mirror body, 2-first array, 3-second array, 21-ring belt, 211-first microlens, 31-microlens set, 311-second microlens, 312-third end, 313-fourth end, 3111-first end, 3112-second end.
Detailed Description
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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, a compound annulus out-of-focus spectacle lens includes: a master mirror body 1, the master mirror body 1 comprising an optical center 11; a first array 2, the first array 2 being arranged on the master mirror body 1, the first array 2 comprising at least one set of annular zones 21, the annular zones 21 being arranged around the optical center 11; a second array 3, the second array 3 being disposed on the mother lens body 1, the second array 3 including a plurality of microlens sets 31; the annular belt 21 is connected to the microlens set 31 such that the microlens set 31 is disposed at intervals in the radial direction of the mother lens body 1. Taking fig. 1 as an example, the annular zones 21 are circular, and the annular zones 21 together form the first array 2; the microlens arrays 31 arranged radially in a square dashed box collectively constitute the second array 3.
In some embodiments, according to the factor that the saccade area of human eyes increases along with the increase of the field angle, by arranging the first array 2 and the second array 3 on the primary lens body 1, the wearing comfort can be effectively improved while the defocusing area ratio is increased, because the clear vision area between the annular belts 21 is provided with the scattered micro lens groups 31, so that the number of micro lenses is obviously increased in the blank zone of the clear vision area far away from the optical center 11 to improve the defocusing area, on one hand, the wearing discomfort caused by the over-dense micro lenses close to the optical center 11 can be avoided, and on the other hand, the more durable defocusing functionality which does not influence the clear vision effect of the macular center can be obtained at the position far away from the optical center 11.
In some embodiments, referring to fig. 2, the female lens body 1 comprises a first optical surface 12 and a second optical surface 13, the first optical surface 12 being on the eye side and the second optical surface 13 being on the side facing away from the first optical surface 12, the two surfaces together forming a first refractive zone having a power based on the prescription required by the wearer; the first array 2 and the second array 3 are located on the second optical surface 13; or the first array 2 and the second array 3 are located on the first optical surface 12; or the first array 2 is located on the first optical surface 12 and the second array 3 is located on the second optical surface 13; or the first array 2 is located on the second optical surface 13 and the second array 3 is located on the first optical surface 12; at least one group of annular zones 21 of the first array 2 are all arranged by taking the optical center 11 as a circle center, the first array 2 is integrally in a concentric circle structure, the first array 2 is provided with an annular zone positioned at the innermost side and an annular zone positioned at the outermost side on the surface of the primary mirror body 1, the annular zone positioned at the innermost side is provided with the minimum outer diameter, and the annular zone positioned at the outermost side is provided with the maximum outer diameter; and the micro lens groups 31 in the second array 3 are distributed between the respective annular zones 21, and the micro lens groups 31 are arranged in the direction of the edge thereof from the center of the mother lens body 1 as a whole. The first array 2 and the second array 3 together constitute a microlens structure on the surface of the mother mirror body 1, and the arrangement between the microlens structures is either regular or irregular, which is within the protection scope of the present application.
In some embodiments, the first array 2 and the female lens body 1 together form a second refractive area, i.e. the second refractive area may be the area where the first array 2 covers the female lens body 1, preferably, at least 4 groups of annular zones 21 in the first array 2 are distributed on the second optical surface 13 and the first optical surface 12 together to form the second refractive area; the second array 3 and the mother lens body 1 together form a third dioptric region, that is, the third dioptric region can be a region where the second array 3 covers the mother lens body 1; the remaining area of the spectacle lens except the second Qu Guangou and the third bending area is the first bending area; wherein, the focal power of the second Qu Guangou and the third dioptric area is different from that of the first dioptric area, when the incident ray passes through the second Qu Guangou and the third dioptric area after the wearer wears the glasses, the function of imaging in front of the retina is provided, and in the third dioptric area, the number of the micro lens group 31 can be increased along with the increase of the visual field angle of the wearer, so that the defocusing area ratio in the pupillary saccade range of the Dai Jinghou is synchronously increased. While the number of the micro lenses in the first array 2 and the second array 3 is increased, the defocusing amount of the zone which is positioned at the outermost side in the first array 2 is reduced, so that the distribution of the defocusing area and the defocusing amount of the saccadic range of the pupil of the spectacle lens is more reasonable when the spectacle lens is worn, and the effect of balancing the functionality and the adaptability of the spectacle lens is achieved. By reducing the amount of defocus in the outer zone, this is based on an optimized design for providing the spectacle lens with a strong retinal stimulus signal, whereas either myopic defocus or hyperopic defocus depends on the amount of defocus in the inner zone, but a sufficient amount of defocus area is the more important factor for the amount of defocus in the outer zone. Thereby enabling a reasonable optimization in the wearer's adaptability by reducing unnecessary functionality.
In some embodiments, referring to fig. 3, the annulus 21 includes a plurality of first microlenses 211 connected to one another, and the microlens assembly 31 includes a second microlens 311, wherein the second microlens 311 includes a first end 3111 and a second end 3112 disposed along a radial direction thereof; the first end 3111 and the second end 3112 may be connected to the first microlens 211 individually or may be connected to the first microlens 211 in common.
In some embodiments, referring to fig. 4, the annulus 21 includes a plurality of first microlenses 211 connected to one another; the microlens set 31 includes a plurality of second microlenses 311 radially connected to each other such that the microlens set 31 has a third end 312 and a fourth end 313 in the radial direction; the third end 312 and the fourth end 313 may be connected to the first microlens 211 respectively, or may be connected to the first microlens 211 together; at this time, the third end 312 is actually one end of one second microlens 311 in the microlens group 31 in the radial direction, and the fourth end 313 is actually the other end of the other second microlens 311 in the microlens group 31 in the radial direction.
In some embodiments, the ophthalmic lens satisfies:
|D 1 -D 0 |≥0，|D 2 -D 0 |≥0，|D 3 -D 0 | > 0, and D 2 ≠D 1 ，D 3 ≠D 1 ；
In the formula, D 1 Denotes the optical power of the first dioptric region, D 2 Denotes the power of the second dioptric region, D 3 Denotes the power of the third dioptric region, D 0 The power of the optical center 11 is shown, when the optical center 11 overlaps with the geometric center of the mother lens body 1. By satisfying the above-mentioned relationship of focal power, the requirements for balancing the functionality and adaptability of the lens can be satisfied.
In some embodiments, the ophthalmic lens further satisfies: 8 ≧ D 2 -D 1 | is ≥ 3, and 3 ≥ D 3 -D 2 And | ≧ 0. When the absolute value of the difference between the focal power of the second dioptric region and the focal power of the first dioptric region is 3.00D-8.00D, the function of imaging the incident light in front of the retina is realized to form myopic defocus; when the absolute value of the difference between the focal power of the third dioptric region and the focal power of the second dioptric region is 0.00D-3.00D, the function of imaging on the retina or in front of the retina can be realized when the incident light passes through the third dioptric region, and the micro-transmission of the third dioptric region is realized along with the increase of the field angleThe number of mirrors is increased to enlarge the defocus area.
In some embodiments, at least one of the first optical surface 12 and the second optical surface 13 is any one of a spherical, aspheric, toroidal, free-form surface design or a combination of multiple designs.
In some embodiments, when the first optical surface 12 and the second optical surface 13 are of spherical design, the optical power of the female lens body 1 does not change from the optical center 11 to the periphery of the female lens body 1.
In some embodiments, when at least one of the first optical surface 12 and the second optical surface 13 is designed to be a trial aspheric surface, the power of the female lens body 1 changes from the optical center 11 to the periphery of the female lens body 1 in rotational symmetry, and the power change amount at least at a radius of 20mm from the optical center 11 is equal to or greater than 0.25D, which is equal to the absolute value of the power difference between the power at a certain point in the first refractive area and the power at the optical center 11.
In some embodiments, when at least one of the first optical surface and the second optical surface is any one of a toroidal design, an asymmetric design surface, and a free-form surface, the power of the female lens body 1 changes from the optical center 11 to the periphery of the female lens body 1 in a non-rotational symmetric manner, and at least the amount of change in power in the horizontal and vertical directions of the female lens body 1 is different.
In some embodiments, the first microlenses 211 have a diameter of 0.8 to 2.0mm; the diameter of the second microlens 311 is 0.5 to 3mm. Preferably, the diameter of the first microlens 211 may be any one of 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm or a range between any two values; the diameter of the second microlens 311 may be any one of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm or a range between any two values. The first microlens 211 and the second microlens 311 cooperate together to increase the ratio of the defocus area in the pupillary saccadic range of Dai Jinghou.
In some embodiments, the microlens sets 31 may be disposed between adjacent annular zones 21, or may be disposed only between some of the annular zones 21; referring specifically to fig. 1, nine zones are disposed from the optical center 11 to the periphery, wherein the microlens set 31 is not disposed between the three zones closest to the optical center 11, and the microlens set 31 is disposed between the zone zones 21. The arrangement of the microlens set 31 can be based on the increased defocusing area required in practice.
In some embodiments, the zones 21 are distributed in a triangular, quadrilateral, polygonal, circular or elliptical pattern about the optical center 11; the annular belts 21 are arranged equidistantly or non-equidistantly in the radial direction of the mother lens body 1; the distance between adjacent endless belts 21 is 1 to 3mm. Preferably, the annular bands 21 may be distributed over a circular area ranging from 4 to 35mm from the optical center 11.
In some embodiments, the microlens sets 31 disposed in the middle of each zone may be arranged in an orderly manner or in a disordered manner according to the design requirements of the spectacle lens; the orderly arrangement means that the micro lens groups in the middle of each girdle are linearly arranged outwards along the optical center; the disordered arrangement refers to that the micro lens groups in the middle of each girdle are arranged along the optical center in a non-linear way outwards; referring specifically to fig. 1, the second microlenses 311 are arranged along the same straight line in the radial direction of the mother lens body 1; referring to fig. 5, the second microlenses 311 are arranged in a staggered manner in the radial direction of the mother lens body 1. Different arrangement modes can further adjust the area of local defocusing, and the application range of different groups of the spectacle lenses is enlarged.
In some embodiments, the ophthalmic lens can be injection molded from a metal mold or cast molded from a glass mold to a desired prescription power or semi-finished product, and then the required prescription power can be obtained by machining the inner surface of the semi-finished product via a lathe. In some embodiments, the ophthalmic lens may also be formed by a UV light curing process into an ophthalmic lens blank using metal and glass molds followed by machining the surface of the blank via the garage to form the lens desired by the wearer or by a fitting process to form the ophthalmic lens or the ophthalmic lens blank.
In some embodiments, the material of the primary mirror includes a polymer material or an inorganic non-metal material. Wherein, the high molecular material comprises thermoplastic resin or thermosetting resin, and the inorganic non-metallic material comprises glass and the like. The thermoplastic resin includes polycarbonate or polymethyl methacrylate; the thermosetting resin includes any one of acrylic resin, episulfide resin, thiourethane resin, allyl resin, and polyurethane.
In some embodiments, a coating film is formed on a surface of at least one side of the mother mirror, and the coating film includes a transparent coating film for increasing transmittance of the lens, a hard coating film for increasing durability of the lens, a reflective film for blocking harmful light, an antireflection film for realizing visibility of image formation, a polarizing film having a color change function, or other color change films doped with a material sensitive to ultraviolet rays, and the like. The coating film can have different colors, and the visible color under the condition of light reflection can be green, blue, yellow, purple and the like, and can also be other colors.
In some embodiments, the ophthalmic lens is prepared directly by a mold, which may comprise an upper mold base and a lower mold base, the working surface of the upper mold base being concave for molding the first optical surface 12 of the ophthalmic lens and the working surface of the lower mold base being convex for molding the second optical surface 13 of the ophthalmic lens.
In some embodiments, the spectacle lens obtained by the above process can be further prepared into a spectacle after being combined with a spectacle frame, and the shape of the spectacle lens can be round, square, ellipse-like or other special-shaped structures.
In some embodiments, referring to FIG. 1, a sheet of superimposed microlenses with a corrective power of-1.00D and a refractive index of 1.591 is made, such as a base curve of 300; the first optical surface 12 and the second optical surface 13 of the mother lens body are designed to be spherical, and the refractive power is +4.00D; meanwhile, a first array 2 and a second array 3 are arranged on the second optical surface 13, the first array 2 comprises 9 circles of annular zones 21 distributed in the range from 20mm aperture to 60 mm aperture of the second optical surface 13, each zone comprises a plurality of first microlenses 211 connected with each other; the second array comprises a plurality of microlens sets 31, each microlens set 31 comprises a second microlens 311, the second microlens 311 is not arranged between the ring zones 21 of the first three circles, the second microlens 311 is arranged between the ring zones 21 adjacent to the ring zone of the fourth circle, the second microlens 311 is respectively connected with the first microlens 211 of the adjacent ring zone, and the second microlens 311 is always positioned on the same straight line.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The composite annular-band out-of-focus spectacle lens and spectacles provided by the embodiment of the application are described in detail, and the principle and the implementation mode of the application are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A compound annulus defocus ophthalmic lens, comprising:
a master mirror body (1), the master mirror body (1) comprising an optical center (11);
a first array (2), the first array (2) being arranged on the primary mirror body (1), the first array (2) comprising at least one set of zones (21), the zones (21) being arranged around the optical center (11);
a second array (3), the second array (3) being arranged on the parent mirror body (1), the second array (3) comprising a plurality of microlens sets (31); the annular belt (21) is connected with the micro lens group (31) so that the micro lens group (31) is arranged at intervals in the radial direction of the mother lens body (1).
2. A compound zone spectacle lens out of focus according to claim 1, characterized in that the zone (21) comprises a plurality of first microlenses (211) connected to each other, the microlens set (31) comprises second microlenses (311), the second microlenses (311) comprise first (3111) and second (3112) radially disposed ends; the first end (3111) and/or the second end (3112) is connected to the first microlens (211).
3. A compound zone spectacle lens out of focus according to claim 1, characterized in that the zone (21) comprises a plurality of first microlenses (211) connected to each other; the microlens set (31) comprises a plurality of second microlenses (311) radially connected to each other, such that the microlens set (31) has a third end (312) and a fourth end (313) in the radial direction; the third end (312) and/or the fourth end (313) are connected to the first microlens (211).
4. A compound zone out-of-focus spectacle lens as claimed in claim 1, wherein the female lens body (1) comprises a first optical surface (12) near the eye side and a second optical surface (13) facing away from the first optical surface (12);
wherein the first array (2) and the second array (3) are located on the second optical surface (13); or
The first array (2) and the second array (3) are located on the first optical surface (12); or
The first array (2) being located on the first optical surface (12) and the second array (3) being located on the second optical surface (13); or
The first array (2) is located on the second optical surface (13) and the second array (3) is located on the first optical surface (12).
5. The compound zone out-of-focus spectacle lens of claim 1, wherein the spectacle lens comprises a first dioptric zone, a second dioptric zone Qu Guangou and a third dioptric zone; wherein the second dioptric zone comprises the area where the first array (2) covers the female lens body (1), the third dioptric zone comprises the area where the second array (3) covers the female lens body (1), and the first dioptric zone is the area of the ophthalmic lens excluding the second Qu Guangou and third dioptric zone;
wherein the ophthalmic lens satisfies:
|D 1 -D 0 |≥0，|D 2 -D 0 |≥0，|D 3 -D 0 | > 0, and D 2 ≠D 1 ，D 3 ≠D 1 ；
In the formula, D 1 Representing the optical power of the first dioptric area, D 2 Denotes the power of the second dioptric region, D 3 Represents the optical power of the third dioptric area, D 0 Represents the optical power of the optical center.
6. The compound annulus defocus ophthalmic lens of claim 5 further satisfying:
8≥|D 2 -D 1 | is ≥ 3, and 3 ≥ D 3 -D 2 |≥0。
7. A compound zone out-of-focus spectacle lens as claimed in claim 4, wherein at least one of the first optical surface (12) and the second optical surface (13) is any one of spherical, aspherical, toric, toroidal, free-form or a combination of designs.
8. A compound annulus defocus ophthalmic lens of claim 2 or 3,
the diameter of the first micro lens (211) is 0.8-2.0 mm; and/or
The diameter of the second micro lens (311) is 0.5-3 mm; and/or
The annular bands (21) are distributed in a triangular, quadrangular, polygonal, circular or elliptical shape around the optical center (11); and/or
The annular belts (21) are arranged equidistantly or non-equidistantly along the radial direction of the mother lens body (1); the distance between the adjacent annular belts (21) is 1-3 mm.
9. A compound annulus defocus spectacle lens as claimed in claim 2 or 3, wherein the second microlenses (311) are arranged along the same line in the radial direction of the mother lens body (1); or
The second microlenses (311) are arranged in a staggered manner in the radial direction of the main lens body (1).
10. An eyeglass comprising a compound annulus defocus eyeglass of any of claims 1-9.
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| CN202222833773.0U CN218240583U (en) | 2022-10-26 | 2022-10-26 | Compound clitellum out of focus lens and glasses |
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| CN202222833773.0U CN218240583U (en) | 2022-10-26 | 2022-10-26 | Compound clitellum out of focus lens and glasses |
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