CN114296160A - Lens suitable for vision correction pattern and manufacturing method thereof - Google Patents
Lens suitable for vision correction pattern and manufacturing method thereof Download PDFInfo
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- CN114296160A CN114296160A CN202110799927.6A CN202110799927A CN114296160A CN 114296160 A CN114296160 A CN 114296160A CN 202110799927 A CN202110799927 A CN 202110799927A CN 114296160 A CN114296160 A CN 114296160A
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- refractive material
- material layer
- low refractive
- lens
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Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/42—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0087—Simple or compound lenses with index gradient
-
- 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
- G02C7/04—Contact lenses for the eyes
- G02C7/049—Contact lenses having special fitting or structural features achieved by special materials or material structures
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
Abstract
The invention relates to a lens suitable for vision correction patterns and a manufacturing method thereof. The lens suitable for vision correction patterns of the invention comprises: a raw material lens base material (10); a multilayer layer (20) provided on the upper part of the substrate (10), wherein the upper 1 st layer of the substrate (10) is composed of a low refractive material layer (21), and the layers from the 2 nd layer to the 8 th layer to the 12 th layer are formed by alternately laminating a high refractive material layer (22) and a low refractive material layer (21), thereby preventing near infrared rays and reflection; and a super-waterproof layer (40) provided on the upper portion of the multiple layer (20) and deposited to a thickness of 30 to 40nm, thereby protecting the multiple layer (20); a vision correction pattern having pinholes (30) provided at predetermined intervals is formed in at least one or more of a low refractive material layer (21) and a high refractive material layer (22) constituting the multilayer layer (20).
Description
Technical Field
The invention relates to a lens suitable for vision correction patterns and a manufacturing method thereof, which is a technology capable of being generally suitable for all types of spectacle lenses.
Background
In general, light refers to one of electromagnetic waves that generate visual signals when incident on the human eye, and includes visible rays (having a wavelength of 380nm to 780nm), ultraviolet rays (having a short wavelength of 380nm or less), infrared rays (having a long wavelength of 700nm or more), and X-rays or gamma rays.
In general, in order to solve the above-mentioned problems, lenses have been developed which are used for blocking visible light (blue light), near infrared rays, and glare, respectively, in order to prevent the visible light, the near infrared rays, and the glare, respectively, while the lenses are designed to prevent the visible light (blue light), the near infrared rays, and the glare, and thus, the lenses are damaged, and the lenses are designed to prevent the visible light, the red spot, and the keratitis, and the like, or to prevent the near infrared rays, and the like, and the near infrared rays, and the skin, the upper layer, the dermis, the deep layer, the dermis, and the muscles, and the skin are weakened fibroblasts, and the collagen, and the elastin are weakened, and the skin are damaged.
The wavelength range of the visible light is 380nm to 780nm, specifically, the visible light is light from purple (wavelength of about 400nm) to red (wavelength of about 700nm), and belongs to the wavelength range of human observation.
Specifically, especially, blue light in visible light is blue light in a blue wavelength band in a visible light range, and is a wavelength light irradiated from an electronic device such as a computer, a smart phone, or a television to enhance the brightness of a picture, and is harmful light which may cause glare, induce eye fatigue, disturb biological rhythm, and even cause sleep disorder.
The blue light, which is a short wavelength (short wavelength) between 380nm and 500nm in the visible ray range, is imaged on the front side of the retina because of the short wavelength and thus cannot be clearly recognized, thereby inducing eye fatigue due to color dispersion, and also aggravating glare and thus further eye fatigue because of strong stimulation of visual cells. Since recent display screens of televisions, computer monitors, smart phones, tablet computers, and the like include a large amount of blue light, severe stimulation is caused to the optic nerve and a sharp drop in vision is caused.
Disclosure of Invention
The present invention is directed to solve the above-described problems of the prior art, and an object of the present invention is to provide a lens to which a vision correction pattern is applied, and a method for manufacturing the same, including: a raw lens substrate; a multilayer layer provided on the substrate, wherein the upper 1 st layer of the substrate is composed of a low refractive material layer, and the layers from the 2 nd to 8 th to 12 th layers are formed by alternately laminating a high refractive material layer and a low refractive material layer, thereby preventing near infrared rays and reflection; and a super-waterproof layer provided on an upper portion of the multi-layer and deposited to a thickness of 30 to 40nm, thereby protecting the multi-layer.
The present invention provides a lens to which a vision correction pattern is applied, comprising: a raw lens substrate 10; a multilayer layer 20 provided on the substrate 10, the upper 1 st layer of the substrate 10 being composed of a low refractive material layer 21, and the layers from the 2 nd to 8 th to 12 th being formed by alternately laminating a high refractive material layer 22 and a low refractive material layer 21, thereby preventing near infrared rays and reflection; and a super-waterproof layer 40 provided on the upper portion of the multi-layer 20 and deposited to a thickness of 30 to 40nm, thereby protecting the multi-layer 20;
a vision correction pattern having pinholes 30 provided at predetermined intervals is formed in at least one or more of the low refractive material layer 21 and the high refractive material layer 22 constituting the multilayer 20.
By forming a vision correction pattern in which pinholes are provided at predetermined intervals in at least one or more of the low refractive material layer and the high refractive material layer constituting the multi-layer, it is possible to block all of near infrared rays, ultraviolet rays (blue light), and glare, and to achieve the effect of preventing eye diseases such as cataract, keratitis, conjunctivitis, and the like.
Drawings
Fig. 1 is a sectional view illustrating a configuration of an eyeglass lens 100 according to a preferred embodiment of the present invention.
Fig. 2 is a partial sectional view illustrating the anti-static layer 50, the pin holes 30 and the high refractive material layer 22 according to the preferred embodiment of the present invention.
Fig. 3 is a plan view illustrating a pinhole 30 according to a preferred embodiment of the present invention.
Fig. 4 is a sequence diagram illustrating a method of manufacturing the eyeglass lens 100 according to the preferred embodiment of the present invention.
Reference numerals:
10: base material
20: multiple layers
21: low refractive material layer
22: high refractive material layer
30: pinhole
31: connecting wire
40: super waterproof layer
41: fluororesin layer
50: antistatic layer
Detailed Description
Next, the lens to which the vision correction pattern of the present invention is applied and the manufacturing method thereof will be described in more detail with reference to examples and comparative examples.
In the present invention, a line perpendicular to the boundary surface of the lens 100 is referred to as a normal line, an angle between the incident light incident into the lens 100 and the normal line is referred to as an incident angle, and the incident light is obliquely bent due to a medium difference between air and the lens 100 when passing through the lens 100, and an angle between the refracted light and the normal line is referred to as a refraction angle.
The term low-refractive substance, as used in the present invention, refers to a substance having a refractive index of 1.5 or less, which refers to a ratio at which the velocity of light decreases inside the eyeglass lens 100 when the light is incident on the eyeglass lens 100, and is the same as a value of a sine (sin) refraction angle divided by a sine (sin) incident angle. Therefore, the smaller the angle of refraction with respect to the angle of incidence, the smaller its refractive index.
The term high refractive substance, a substance having a refractive index of more than 1.9, as used in the present invention, refers to a substance having a relatively large angle of refraction with respect to an incident angle as compared to the low refractive substance.
As shown in fig. 1, the base material 10 is a storage object through which light can pass, refract, diffract, and reflect, and a plurality of deposition substances are stacked on the base material 10, whereby the visual field or eyesight of a user can be corrected.
Specifically, the substrate 10 may be made of a transparent (translucent) material such as an episulfide resin, a polycarbonate resin, an acrylic resin, a poly-4-methylpentene resin, a diethylene glycol bisallyl carbonate resin, an allyl carbonate resin, a polyether resin, a polyester resin, a polyurethane resin obtained by reacting an isocyanate compound with a polythiol compound, a transparent resin obtained by curing a polymerizable composition containing a thioepoxy compound having one or more disulfide bonds in the molecule, and inorganic glass, and may be used in various applications such as a convex mirror, a concave mirror, a plane mirror, a myopia mirror, a telephoto mirror, an astigmatic mirror, a magnifying mirror, a screen mirror, and the like according to the use requirements.
Specifically, the substrate 10 may be any material such as glass or plastic, but is preferably made of a plastic material such as urethane resin, episulfide resin, polycarbonate resin, acrylic resin, polyethersulfone resin, or diethylene glycol bisallylcarbonate resin.
Further, the substrate 10 of the present invention is provided with a hard coat layer for preventing scratches from occurring in the substrate 10 by uniformly coating the surface of the substrate 10 with a hard coat agent using a substance having excellent transparency and excellent adhesion to the substrate 10 on the surface, and at this time, as a method for forming the hard coat layer, a method such as a spin coating method, a flow coating method, a dip coating method, and a spray coating method may be used, and in order to secure thickness uniformity of a coating film, a method such as a spin coating method or a dip coating method is preferably used.
Specifically, the hard coat layer can be formed using a compound having a plurality of epoxy groups, a vinyl acetate resin, a photo cation polymerization initiator, and the like as the hard coat agent.
Examples of the compound having a plurality of epoxy groups include bisphenol a type epoxy compounds, bisphenol F type epoxy compounds, novolac type epoxy compounds, cresol epoxy compounds, and aliphatic glycidyl ether type epoxy compounds.
As the vinyl acetate resin, for example, polyvinyl butyral, polyvinyl ether, polyethylene oxide, polyvinyl acetate, etc. can be used, and further, natural polymers such as ethylhydroxyethyl, carboxymethylethyl, hydroxyethyl, etc. can be used.
As the photo cation polymerization initiator, onium salts such as iodonium salts (aromatic iodonium salts) and sulfonium salts (aromatic sulfonium salts), halogen-containing compounds such as S-triazine derivatives, sulfone compounds, sulfonic acid compounds, sulfonimide compounds, diazomethane compounds, and the like can be used.
The thickness of the base material 10 is preferably in the range of 1.3 to 1.7mm, and when the thickness is less than 1.3mm, the thickness may be too thin and may cause damage, and when the thickness exceeds 1.7mm, the internal transmittance may be increased in proportion and the appearance and weight of the spectacle lens may be deteriorated. Preferably, it is formed with a thickness of 1.4 to 1.6 mm.
As shown in fig. 1, the multiple layers 20 are provided on both upper side surfaces of the substrate 10, wherein the upper 1 st layer of the substrate 10 is formed of the low refractive material layer 21, and the high refractive material layer 22 and the low refractive material layer 21 are alternately laminated from the 2 nd layer to the 8 th layer or even the 12 th layer, thereby preventing near infrared rays and reflection.
Specifically, the 1 st layer of the substrate 10 needs to be composed of the low refractive material layer 21 because a film detachment phenomenon may occur between the substrate 10 composed of a plastic material and the multi-layer 20, which is a deposition material composed of a metal oxide, due to the difference in expansion and contraction coefficients due to thermal change, and if the high refractive material layer 22 is used in the 1 st layer, the substrate 10 may be separated from the multi-layer 20 due to external impact, and by using the low refractive material layer 21 in the 1 st layer, the adhesion to the substrate 10 may be improved and thereby the film detachment phenomenon due to external impact may be prevented.
As the component constituting the low refractive index material layer 21, silica and alumina, for example, may be used alone or in combination.
In the present invention, the use of the Silica (Silica, SiO) is more advantageous than the use of the Silica alone, and the composition ratio in the mixing may be set to be Silica (SiO)2) With aluminum Oxide (Al)2O3) Mixing is performed at a ratio of 5 to 8:2 to 5, thereby strengthening the adhesion (film detachment) and the like, which are disadvantages of silica.
The silica is a transparent low refractive material having a relatively low refractive index that can realize transmission in a wide wavelength region, i.e., 200 to 4500nm, and is widely used for an anti-reflective coating and a protective layer of a metal thin film because of excellent durability and resistance to external environmental changes, and the silica thin film has characteristics that physical properties such as a thickness, an absorption rate, a refractive index, etc. can be adjusted according to vacuum deposition conditions such as a vacuum degree, a deposition temperature, a deposition method, a substrate temperature, an oxygen pressure, a deposition speed, etc.
However, when only the silica is used, the defects of poor hardness and adhesion are maximized, and thus a film detachment phenomenon from the substrate 10 may frequently occur.
The alumina is a transparent low refractive material having a relatively low refractive index which can be transmitted at 300nm or more, the alumina thin film has excellent adhesion to metals such as glass, most oxides, aluminum, etc., and physical properties such as a density, an absorption rate, a refractive index, etc., can be adjusted according to vacuum deposition conditions such as a vacuum degree, a deposition temperature, a deposition method, a substrate temperature, an oxygen pressure, a deposition speed, etc., and can reduce light reflected on the surface of the eyeglass lens, can block harmful light in ultraviolet rays, visible rays, etc., when the light transmittance reaches 99.4%, and can reduce eye fatigue of a user because there is almost no light reflection.
However, when only the alumina is used, breakage may frequently occur due to a disadvantage of poor durability.
Therefore, in the present invention, silica and alumina are mixed and used, and when the weight ratio of silica is more than 8, a phenomenon of film detachment may occur due to a low hardness and adhesion, which are disadvantages of silica, and when the weight ratio of alumina is less than 2, a glare problem may occur due to failure to reduce reflection of light, and thus it is preferable to mix them at a weight ratio within the above range. Preferably, silica and alumina are used in a mixture in a weight ratio of 6: 4.
The high refractive material layer 22 is for blocking infrared rays and ultraviolet rays (blue light) which are wavelengths other than visible light, and as the component constituting the high refractive material layer 22, zirconium dioxide and titanium dioxide may be used alone or in combination, for example.
In the present invention, the use of a mixture is more advantageous than the use of a single compound, and Zirconium dioxide (ZrO) may be used as a composition ratio in the mixing2) With Titanium dioxide (TiO)2) The mixture is mixed at a ratio of 5 to 8:2 to 5, thereby enhancing the infrared ray blocking ability which is an advantage of zirconium dioxide and the ultraviolet ray blocking ability which is an advantage of titanium dioxide.
The zirconium dioxide is a transparent high refractive material which has high refractive index and excellent durability and can transmit in a wide wavelength region, i.e., 340 to 1200nm, and physical properties such as a density, an absorption rate, and a refractive index can be adjusted according to vacuum deposition conditions such as a vacuum degree, a deposition temperature, a deposition method, a substrate temperature, an oxygen pressure, and a deposition speed, and can provide vision protection by blocking a near infrared region.
However, when only the zirconium dioxide is used, the infrared blocking ability can be improved, but ultraviolet rays cannot be blocked.
The titanium dioxide is a transparent high refractive material which has high light transmittance, excellent ultraviolet blocking ability and excellent durability and can transmit light under 300 to 400nm, and physical properties such as a density, an absorption rate, a refractive index and the like can be adjusted according to vacuum deposition conditions such as a vacuum degree, a deposition temperature, a deposition method, a substrate temperature, an oxygen pressure, a deposition speed and the like, and can provide vision protection by blocking a near infrared region.
However, when only the titanium dioxide is used, the ultraviolet blocking ability can be improved, but infrared rays cannot be blocked.
Therefore, in the present invention, when the zirconia and the titania are mixed, the zirconia and the titania may be mixed at a weight ratio within the above range, since the infrared blocking ability may be increased but the ultraviolet blocking ability may be decreased when the zirconia is used at a weight ratio exceeding 8, the infrared blocking ability may be decreased when the zirconia is used at a weight ratio less than 5, the ultraviolet blocking ability may be decreased when the titania is used at a weight ratio less than 2, and the ultraviolet blocking ability may be decreased when the zirconia is used at a weight ratio exceeding 5. Preferably, zirconium dioxide and titanium dioxide are used in a mixture in a weight ratio of 6: 4.
In addition, the low refractive material layer 21 is deposited with a thickness of 0.01 to 250nm, the high refractive material layer 22 is deposited with a thickness of 0.001 to 200nm, and by alternately and repeatedly depositing the low refractive material layer 21 and the high refractive material layer 22, near infrared rays can be blocked, blue light can be blocked, and glare can be prevented, thereby reducing fatigue of eyes and making an object clearer and thereby providing help for correction of vision.
Specifically, it is preferable that the low refractive material layer 21 and the high refractive material layer 22 are alternately and repeatedly stacked because if the high refractive material layer 22 is deposited after the low refractive material layer 21 is deposited or if the low refractive material layer 22 is not deposited alternately but is irregularly stacked, a problem of blurred vision or a decrease in the near infrared ray blocking effect may be caused due to the reflectance, and a problem of which portion is not confirmed when a problem occurs due to the deposition condition, and an eye disease may be induced because the near infrared ray, blue light, and glare cannot be effectively blocked, and thus the low refractive material layer 21 and the high refractive material layer 22 are alternately and repeatedly stacked.
That is, the low refractive material layer 21 may prevent near infrared rays, blue light and reflection by being deposited on the 1 st, 3 rd, 5 th, 7 th, 9 th and 11 th layers and thereby prevent eye diseases such as cataract, keratitis, conjunctivitis, etc., may also make the eyes of the user comfortable by preventing glare, and thus may more clearly observe an object and thereby correct vision, and the high refractive material layer 22 may prevent near infrared rays and blue light by being deposited on the 2 nd, 4 th, 6 th, 8 th, 10 th and 12 th layers and thereby make the eyes of the user wearing glasses comfortable and thereby ensure comfortable feeling when worn for a long time.
In the case where the deposition thickness of the low refractive material layer 21 is less than 0.01nm, it may be preferable to deposit the low refractive material layer with a thickness within the range because the thickness is too thin, which may cause a problem of difficulty in preventing glare, in the case where the deposition thickness exceeds 250nm, which may cause a problem of reduction in transmittance of the lens, in the case where the deposition thickness of the high refractive material layer 22 is less than 0.001nm, which may cause a problem of not effectively blocking near infrared rays, and in the case where the deposition thickness exceeds 200nm, which may cause a problem of excessively thick final lens 100. Preferably, the low refractive material layer 21 is deposited with a thickness of 4.3 to 189nm, and the high refractive material layer 22 is deposited with a thickness of 0.5 to 130 nm.
Specifically, regarding the low-refractive material layer 21 and the high-refractive material layer 22, different thicknesses may be employed in the respective layers of the low-refractive material layer 21 and the high-refractive material layer 22 in order to have an average reflectance in the range of 1.5 to 2.5% in a wavelength region of 380 to 700nm and have a near infrared ray blocking ratio in the range of 40% or more.
When the average reflectance of the low refractive material layer 21 and the high refractive material layer 22 is less than 1.5% or more than 2.5%, the wearing feeling may be deteriorated or the quality may be deteriorated, and when the near infrared ray cut-off ratio is less than 40%, the eye diseases such as cataract, keratitis, conjunctivitis may not be prevented, and therefore, the average reflectance and the near infrared ray cut-off ratio are preferably within the above ranges.
The ultra-waterproof layer 40 is provided on the upper portion of the multi-layer 20 as shown in fig. 1, and protects the pin holes 30 by being deposited with a thickness of 30 to 40 nm.
Specifically, the super waterproof layer 40 is formed by sequentially laminating the low refractive material layer 21 and the fluorine resin layer 41 to form a coating layer on the surface of the eyeglass lens 100, thereby preventing the surface of the lens 100 from being contaminated by, for example, water, oil, fingerprint, dust in the air, and division, and can be easily removed when contamination has occurred.
Specifically, the super-waterproof layer 40 is formed by sequentially laminating the low refractive material layer 21 and the fluororesin layer 41, i.e., one or more selected from the group consisting of polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, and polyvinylidene fluoride, to protect the surface of the lens 100 from contamination due to static electricity, and can be easily removed when contamination has occurred.
The fluororesin layer 41 is preferably deposited to a thickness of 30 to 40nm, and if the deposition thickness is less than 30nm, it may be difficult to prevent the surface from being contaminated because it is difficult to reduce the surface friction coefficient and adhesive force of the lens 100, while if the deposition thickness exceeds 40nm, it may be difficult to reduce the light transmittance, and thus it is preferable to deposit the thickness within the above range.
The antistatic layer 50 is formed by depositing indium tin oxide on the upper portion of the pin hole 30 as shown in fig. 1, and is deposited in a thickness of 4 to 10nm, so that the generation of static electricity can be suppressed, thereby preventing obligations such as dust from adhering to the surface of the lens 100, i.e., preventing the lens 100 from being contaminated by obligations and thereby ensuring a clean use state.
Specifically, the antistatic layer 50 is made of transparent conductive Oxide, i.e., Indium Tin Oxide (In)2O3)0.9(SnO2)0.1ITO) to achieve an electrostatic prevention effect and an additional ultraviolet ray and electromagnetic wave shielding effect, and also to improve heat resistance and durability.
The antistatic layer 50 is preferably deposited to a thickness of 4 to 10nm, and if the deposition thickness is less than 4nm, it may cause a problem that it is difficult to linearly adjust the light transmittance according to an increase in the wavelength of light, and if the deposition thickness exceeds 10nm, it may cause a problem that the light transmittance is significantly reduced, and thus it is preferable to perform the deposition under the conditions within the above range.
As shown in fig. 2 and 3, the pinhole 30 is formed with a vision correction pattern in which pinholes 30 are provided at predetermined intervals in at least one or more of the low refractive material layer 21 and the high refractive material layer 22 constituting the multilayer 20.
The pinholes 30 are connected in a mesh form, that is, the pinholes 30 are connected by the connecting lines 31 such that the connecting lines 31 constitute a specific pattern, and the pinholes 30 are formed at each intersection where the connecting lines 31 intersect, thereby making the object more vivid and reducing fatigue of the eyes by blocking and extinguishing light of high-order aberration, which is reflected by diffraction, interference, phase phenomenon, etc., when the light passes through the lens, and thereby preventing glare and reducing discomfort at a near distance.
At this time, the specific pattern may be a polygon (e.g., a quadrangle, a hexagon, an octagon, or the like) configured by connecting a plurality of connection lines. The connecting line 31 is preferably a straight line, but may be a curved line.
Specifically, the pinhole 30 is a small hole similar to a needle-punched hole, which can make only light required by the eyeball to be incident and thereby prevent glare, and can make people with abnormal refraction of the eyeball, such as myopia, hyperopia, astigmatism, aging, etc., more clearly observe objects.
In addition, the connection lines 31 are formed in a specific pattern by connecting the adjacent pinholes 30 to the pinholes 30, and the formation of the pinholes 30 can be maximized by forming a large number of intersections of lines and lines, and thus the light incident on the eyeballs of the user is filtered by the pinholes 30, thereby making the eyes of the user more comfortable, ensuring a clear field of vision, and correcting the eyesight.
The pinhole 30 can make many different patterns such as triangle, quadrangle, pentagon, etc. by using different designs to make the connecting lines 31 form several intersections. However, when a pattern such as a triangle, a quadrangle, a pentagon, etc. is used, since the number of pinholes 30 per unit area of the lens 100 is smaller than that in the case of the hexagonal pattern, thereby causing a reduction in light filtering effect, it is preferable that the connection lines 31 are connected to form a polygonal pattern of a hexagon or more.
The pinhole 30 is formed with a diameter (D) of 0.3mm or more, so that side effects such as vertigo do not occur even when worn for a long time.
Specifically, when the diameter of the pinhole 30 is less than 0.3mm, there is a possibility that the visual deterioration may be caused by excessive diffraction of light, and therefore, it is preferable to form the pinhole with a diameter of 0.3mm or more, in other words, 380 to 420 pinholes 30 are formed in each lens 100, so that the visual deterioration speed of the user can be retarded or improved.
If the number of pinholes 30 per lens 100 is less than 380, it may be difficult to block and eliminate scattered light due to diffraction, interference, and phase phenomena occurring when light passes through the lens, thereby further reducing the glare prevention effect, and if it exceeds 420, side effects such as vertigo may occur, so that the number of pinholes is preferably within the above range.
The pinholes 30 are preferably formed in at least one or more of the low refractive material layer 21 and the high refractive material layer constituting the multilayer layer 20, but the multilayer layer 20 may be deposited thereon after being formed in a hard coat layer formed on the surface of the substrate. Preferably, the pinholes 30 are formed in the low refractive material layer 21 or the hard coat layer positioned at the uppermost layer among the first low refractive material layer 21 or the multiple layer 20.
Specifically, in the case where the pinholes 30 are formed in the high refractive material layer 22 or other layers than the 1 st low refractive material layer 21 or the low refractive material layer 21 positioned at the uppermost layer among the multiple layers 20, there may be a problem that the quality of the lens 100 is deteriorated or the defective ratio is increased during the process of forming the pinholes 30 due to the influence on the deposition function, and therefore it is preferable to form the pinholes 30 in the 1 st low refractive material layer 21 or the low refractive material layer 21 positioned at the uppermost layer among the multiple layers 20 or the hard coat layer. Preferably, it is formed in the low refractive material layer 21 positioned at the uppermost layer among the multiple layers 20.
In addition, in the case where the multi-layer 20 is deposited on the hard coating layer after the pinholes 30 are formed on the upper portion thereof by using the laser or the antistatic layer 50 and the ultra-waterproof layer 40 are deposited on the multi-layer 20 after the pinholes 30 are formed on the upper portion thereof by using the laser, since the deposition material is filled in the connection line 31 formed to a certain depth in the laser etching process, the height of the portion of the connection line 31 formed to a certain depth and the height of the portion of the vacuum 30 not formed to a certain depth are different from each other and thus the thickness difference is maintained, and at this time, a refraction occurs once, but when the connection line 31 formed to a certain depth is empty, a refraction occurs twice due to the medium difference, and thus it is preferable to deposit another material on the upper portion of the vacuum 30.
In addition, the vacuum 30 may be selectively manufactured according to the size of the pupil of the user by forming a first interval L1 between the connection line 31 and the connection line 31, a second interval L2 between the diagonally arranged pinhole 30 and the pinhole 30, and a third interval L3 between the vertically arranged pinhole 30 and the pinhole 30 at different intervals, and in the case where the first interval, the second interval, and the third interval are larger than the through hole of the user, a problem of a dizzy feeling may occur due to simultaneous sensing of a plurality of phases, and in the case where the first interval, the second interval, and the third interval are smaller than the through hole of the user, a problem of a honeycomb-shaped afterimage and thus a visual deterioration may be observed due to a dark spot appearing in a visual field.
As shown in fig. 3 and 4, a method for manufacturing a lens 100 to which a vision correction pattern is applied includes: a first step S10 of preparing a raw lens base material 10; a second step S20 of washing the substrate 10 in the first step S10 with ultrapure water and an ultrasonic washer; a third step S30 of depositing a multiple layer 20 to both sides of the substrate 10 after the second step S20; a fourth step S40 of processing the pinhole 30 in the upper portion of the multi-layer 20 with the laser after the third step S30; a fifth step S50 of depositing an antistatic layer 50 on both sides of the substrate 10 after the fourth step S40; a sixth step S60 of depositing a super waterproof layer 40 after the fifth step S50; a seventh step S70 of inspecting a lens surface after the sixth step S60; and an eighth step S80 of checking the pattern of the pinholes 30 with a Light Emitting Diode (LED) screening machine after the seventh step S70.
Specifically, in the first step S10, a raw material for the lens 100 made of a transparent plastic material or an inorganic glass material is prepared.
Next, in the step S20, washing is performed with ultrapure water and an ultrasonic washer in order to remove contaminants adhering to the raw material prepared in the first step S10 and ensure smooth adhesion of the low refractive material layer 21 deposited next.
Specifically, the Ultra Pure Water (UPW) is Water from which ionic components are removed, and thus is also called De-ionized Water (DIW), and is generally highly Pure Water from which inorganic substances, fine particles, bacteria, microorganisms, dissolved gases, and the like in Water are removed, and cleanliness can be ensured by using Ultra Pure Water.
In addition, in the third step S30, multiple layers 20, i.e., a low refractive material layer 21 and a high refractive material layer 22, may be deposited on both sides of the substrate 10 after the second step S20, alternately and repeatedly.
Specifically, in the third step S30, the multiple layer 20 is deposited on both sides, i.e., the convex and concave surfaces, of the washed substrate 10, i.e., the low-refractive material layer 21 and the high-refractive material layer 22 are repeatedly deposited by a method such as a vacuum deposition method, an ion assisted deposition method, an ion plating method, a sputtering method (sputtering), or the like.
Further, in the fourth step S40, the pinhole 30 is processed on the upper portion of the multi-layer 20 with the laser after the third step S30.
That is, as shown in fig. 3, in the fourth step S40, the pinhole 30 is processed so that the depth H from the lower surface of the antistatic layer 50 to the lower surface of the pinhole 30 is 1 to 1.5nm, thereby preventing vertigo.
Specifically, when the processing depth H is less than 1nm, there is a possibility that the effect of correcting the vision is reduced by ensuring comfortable eyes of the user and a clear visual field, and when the processing depth H exceeds 1.5nm, there is a possibility that the degree of the lens is affected to cause a problem of vertigo, so that it is preferable to perform the processing at a depth within the above range.
In addition, in the fifth step S50, the antistatic layer 50 is deposited on both sides of the base material 10 after the fourth step S40 by a method such as a vacuum deposition method, an ion assisted deposition method, an ion plating method, a sputtering method, or the like.
Further, in the sixth step S60, the super water repellent layer 40 is deposited by a method such as a vacuum deposition method, an ion assisted deposition method, an ion plating method, a sputtering method) after the fifth step S50.
In addition, in the seventh step S70, the surface of the lens is first inspected by naked eyes after the sixth step S60, so that a product having quality problems such as scratches, fingerprints, stains, etc. is screened and a qualified product and a defective product are separated.
In addition, in the eighth step S80, after the seventh step S70, whether the pattern of the connection lines 31 connecting the pinholes 30 is processed into a normal state having a specific shape is confirmed by a Light-Emitting Diode (LED) screener, and the packages are sorted by different degrees.
Next, the present invention will be described in more detail with reference to examples and comparative examples.
(whether near infrared rays are blocked or not)
In order to compare the light transmittances of the lenses of examples 1 to 3 and comparative example 1, the light transmittance at 850nm was measured using a spectral transmittance meter generally used for ultraviolet blocking, and the light transmittance measured at 100% was subtracted and evaluated according to the following criteria. The unit is%.
More than 55 percent: 5 points of
54 to 50%: 4 is divided into
49 to 45%: 3 points of
44 to 40%: 2 is divided into
Less than 39%: 1 minute (1)
(whether blue light is blocked or not)
In order to compare the light transmittances of the lenses of examples 1 to 3 and comparative example 1, the light transmittance at 410nm was measured by a Spectrophotometer U-4100Spectrophotometer, and the light transmittance measured at 100% was subtracted and evaluated according to the following criteria. The unit is%.
More than 90 percent: 5 points of
89 to 84%: 4 is divided into
83 to 78%: 3 points of
77 to 72%: 2 is divided into
Less than 71%: 1 minute (1)
(whether glare is blocked or not)
In order to compare the light transmittances of the lenses of examples 1 to 3 and comparative example 1, the reflectance at 750nm was measured by a commonly used non-reflective Light Emitting Diode (LED) lighting apparatus, and the reflectance measured at 100% was subtracted therefrom, and then evaluated according to the following criteria. The unit is%.
Over 30%: 5 points of
29 to 25%: 4 is divided into
24 to 20%: 3 points of
19 to 15%: 4 is divided into
Less than 14%: 1 minute (1)
(whether vision is corrected or not)
The eyes equipped with the lenses manufactured in examples 1 to 3 and comparative example 1 were required to be worn for 10 days by male 10 and female 10 persons of 20 to 49 years old. Next, the overall feeling of discomfort in a short distance in daily life was evaluated.
The sensory test was performed according to a 5-point scale (5: no discomfort, 4: some discomfort in a specific period of time, 3: frequent discomfort, 2: most discomfort, 1: constant discomfort), and after the characteristics were investigated, the second digit was rounded off after the decimal point and the arithmetic mean was calculated.
(depth of focus measurement)
More than 1.3: 5 points of
1.2 to 1.0: 4 is divided into
0.9 to 0.7: 3 points of
0.6 to 0.4: 2 is divided into
Less than 0.3: 1 minute (1)
(examples 1 to 3 and comparative example 1)
First, a low refractive material in which silicon dioxide and aluminum oxide required in a low refractive material layer are mixed in a weight ratio of 6:4 and a high refractive material in which zirconium dioxide and titanium dioxide required in a high refractive material layer are mixed in a weight ratio of 6:4 are alternately and repeatedly deposited on both side surfaces of a lens substrate, and as shown in the following tables 1 to 3, in example 1 and example 2 and comparative example 1, after deposition is alternately repeated from a layer 1 to a layer 12, an antistatic layer is deposited on a layer 13, a low refractive material layer is deposited on a layer 14, and a fluorine resin layer is deposited on a layer 15.
Example 3 after alternately repeating the deposition of a low refractive material layer and a high refractive material layer from the 1 st layer to the 8 th layer, an antistatic layer was deposited on the 9 th layer, a low refractive material layer was deposited on the 10 th layer, and a fluorine resin layer was deposited on the 11 th layer.
For comparison, a low refractive material and a high refractive material were alternately and repeatedly laminated on both sides of the manufactured lens base material in the same manner as in examples 1 to 3, but silica was used as the low refractive material and titania was used as the high refractive material.
[ TABLE 1 ]
[ TABLE 2 ]
| Substance(s) | Thickness (nm) | |
| Layer 1 (low refraction)Substance layer) | SiO2(6):Al2O3(4) | 189 |
| Layer 2 (high refractive material layer) | ZrO2(6):TiO2(4) | 17 |
| Layer 3 (Low refractive material layer) | SiO2(6):Al2O3(4) | 32 |
| Layer 4 (high refractive material layer) | ZrO2(6):TiO2(4) | 99 |
| Layer 5 (Low refractive material layer) | SiO2(6):Al2O3(4) | 17 |
| Layer 6 (high refractive material layer) | ZrO2(6):TiO2(4) | 20 |
| Layer 7 (Low refractive material layer) | SiO2(6):Al2O3(4) | 140 |
| Layer 8 (high refractive material layer) | ZrO2(6):TiO2(4) | 4.5 |
| Layer 9 (Low refractive material layer) | SiO2(6):Al2O3(4) | 14.3 |
| Layer 10 (high refractive material layer) | ZrO2(6):TiO2(4) | 4.5 |
| Layer 11 (Low refractive material layer) | SiO2(6):Al2O3(4) | 17 |
| Layer 12 (high refractive material layer) | ZrO2(6):TiO2(4) | 101 |
| Layer 13 (antistatic layer) | (In2O3)0.9(SnO2)0.1 | 8 |
| Layer 14 (Low refractive material layer) | SiO2(6):Al2O3(4) | 76 |
| Layer 15 (fluororesin layer) | C2F4 | 35 |
[ TABLE 3 ]
[ TABLE 4 ]
| Substance(s) | Thickness (nm) | |
| Layer 1 (Low refractive material layer) | SiO2 | 24 |
| Layer 2 (high refractive material layer) | TiO2 | 4.5 |
| Layer 3 (Low refractive material layer) | SiO2 | 103 |
| Layer 4 (high refractive material layer) | TiO2 | 8 |
| Layer 5 (Low refractive material layer) | SiO2 | 25 |
| Layer 6 (high refractive material layer) | TiO2 | 67 |
| Layer 7 (Low refractive material layer) | SiO2 | 6 |
| Layer 8 (high refractive material layer) | |
21 |
| Layer 9 (Low refractive material layer) | SiO2 | 132 |
| Layer 10 (high refractive material layer) | TiO2 | 3 |
| Layer 11 (Low refractive material layer) | SiO2 | 7 |
| Layer 12 (high refractive material layer) | TiO2 | 74 |
| Layer 13 (antistatic layer) | (In2O3)0.9(SnO2)0.1 | 4 |
| Layer 14 (Low refractive material layer) | SiO2 | 65 |
| Layer 15 (fluororesin layer) | C2F4 | 30 |
[ TABLE 5 ]
As shown in the above table 5, the eyeglass lens manufactured according to the present invention has near infrared ray blocking, ultraviolet (blue light) blocking, glare blocking, and vision correction effects. Specifically, examples 1 and 2 exhibited the most excellent visual acuity correction effect.
Claims (2)
1. A lens adapted to have a vision correcting pattern applied thereto, comprising:
a raw material lens base material (10);
a multilayer layer (20) provided on the upper part of the substrate (10), wherein the upper 1 st layer of the substrate (10) is composed of a low refractive material layer (21), and the layers from the 2 nd layer to the 8 th layer to the 12 th layer are formed by alternately laminating a high refractive material layer (22) and a low refractive material layer (21), thereby preventing near infrared rays and reflection; and
a super-waterproof layer (40) provided on the upper portion of the multiple layer (20) and deposited to a thickness of 30 to 40nm, thereby protecting the multiple layer (20);
a vision correction pattern having pinholes (30) provided at predetermined intervals is formed in at least one or more of a low refractive material layer (21) and a high refractive material layer (22) constituting the multilayer layer (20).
2. A method for manufacturing a lens to which a vision correction pattern is applied, the method comprising:
a first step (S10) of preparing a raw lens base material (10);
a second step (S20) of washing the substrate (10) in the first step (S10) with ultrapure water and an ultrasonic washer;
a third step (S30) of depositing a multiple layer (20) to both sides of the substrate (10) after the second step (S20);
a fourth step (S40) of processing a pinhole (30) in an upper portion of the multi-layer (20) using a laser after the third step (S30);
a fifth step (S50) of depositing an antistatic layer (50) on both sides of the base material (10) after the fourth step (S40);
a sixth step (S60) of depositing a super waterproof layer (40) after the fifth step (S50);
a seventh step (S70) of inspecting a lens surface after the sixth step (S60); and
an eighth step (S80) of checking the pattern of the pinholes (30) with a Light Emitting Diode (LED) screening machine after the seventh step (S70).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200129330A KR102243076B1 (en) | 2020-10-07 | 2020-10-07 | Lens to which vision correction pattern is applied and manufacturing method |
| KR10-2020-0129330 | 2020-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114296160A true CN114296160A (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110799927.6A Pending CN114296160A (en) | 2020-10-07 | 2021-07-15 | Lens suitable for vision correction pattern and manufacturing method thereof |
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|---|---|
| KR (1) | KR102243076B1 (en) |
| CN (1) | CN114296160A (en) |
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