WO2022209094A1 - 眼鏡レンズ、眼鏡レンズの製造方法及び眼鏡 - Google Patents
眼鏡レンズ、眼鏡レンズの製造方法及び眼鏡 Download PDFInfo
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- WO2022209094A1 WO2022209094A1 PCT/JP2021/048731 JP2021048731W WO2022209094A1 WO 2022209094 A1 WO2022209094 A1 WO 2022209094A1 JP 2021048731 W JP2021048731 W JP 2021048731W WO 2022209094 A1 WO2022209094 A1 WO 2022209094A1
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- metal
- layer
- spectacle lens
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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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/12—Organic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/243—Crucibles for source material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/26—Vacuum evaporation by resistance or inductive heating of the source
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
- C23C14/548—Controlling the composition
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
-
- 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
- G02C7/108—Colouring materials
Definitions
- the present invention relates to a spectacle lens manufacturing method and spectacles.
- a spectacle lens generally has a structure in which one or more functional layers are formed on the surface of a lens substrate (see Patent Document 1, for example).
- spectacle lenses are exposed to light and moisture while being incorporated into spectacles and used by spectacle wearers for a long period of time. Therefore, it is desirable that spectacle lenses have excellent antibacterial light resistance and water resistance.
- An object of one aspect of the present invention is to provide a spectacle lens with excellent antibacterial light resistance and water resistance.
- One aspect of the present invention is having a lens substrate and an inorganic layer, Further having a metal-containing layer on the surface side of the inorganic layer opposite to the lens substrate,
- the metal contained in the metal-containing layer includes a first metal and a second metal, the first metal is silver; spectacle lens, wherein the second metal is one or more metals selected from the group consisting of cobalt, nickel, zinc, copper, zirconium, molybdenum, lead, platinum, gold and palladium; Regarding.
- the metal-containing layer can function as an antibacterial layer for imparting antibacterial properties to the spectacle lens.
- the spectacle lens can exhibit antibacterial properties.
- silver included as the first metal can function as an antimicrobial component.
- the second metal can contribute to enhancing the light resistance and water resistance of the antimicrobial performance exhibited by silver by controlling the progress of oxidation of silver.
- the present inventor speculates that the spectacle lens having the metal-containing layer containing the first metal and the second metal can exhibit excellent light resistance and water resistance in terms of antibacterial properties.
- the invention is not limited to the speculations described herein.
- FIG. 2 is a specific example 1 of temperature profiles of heaters 3A and 3B shown in FIG. 1.
- FIG. 2 is a specific example 2 of temperature profiles of heaters 3A and 3B shown in FIG. 1.
- FIG. 3 is a specific example 3 of temperature profiles of heaters 3A and 3B shown in FIG. 1 is a schematic cross-sectional view showing an example of the layer structure of a spectacle lens;
- the metal-containing layer of the spectacle lens contains silver (Ag) as the first metal and one or more metals other than silver as the second metal.
- the second metal is Cobalt (Co), Nickel (Ni), Zinc (Zn), Copper (Cu), Zirconium (Zr), Molybdenum (Mo), Lead (Pb), Platinum (Pt), Gold (Au) and palladium (Pd), preferably one or more metals selected from the group consisting of zirconium, platinum, gold and palladium.
- platinum is preferable because it is a metal that can contribute to controlling the progress of oxidation of silver and can exhibit antibacterial properties.
- Examples of the form of existence of the first metal and the second metal in the metal-containing layer include the form of a metal element or alloy, the form of an inorganic compound or an organic compound, the form of metal ions, and the like. Moreover, the form of a metal complex can also be mentioned.
- the present inventor believes that at least a portion of silver, which is the first metal, can be ionized by oxidation to exhibit antibacterial properties, and that this means that the metal-containing layer can function as an antibacterial layer. I think I will contribute.
- selecting the above-described metal that can exert the effect of controlling the progress of oxidation of silver as the second metal contributes to enhancing the antibacterial light resistance and water resistance. .
- the metal-containing layer is a layer located on the inorganic layer provided on the lens substrate, and is formed on the inorganic layer by a film-forming method selected from the group consisting of a dry film-forming method and a wet film-forming method. can do.
- dry film formation methods include physical vapor deposition and chemical vapor deposition methods
- wet film formation methods include coating methods.
- the method for forming the metal-containing layer is preferably a dry film-forming method, and more preferably a physical vapor deposition method.
- An example of the physical vapor deposition method is vapor deposition.
- a method for forming the metal-containing layer will be described below, taking the vapor deposition method as an example.
- the metal-containing layer is not limited to the film formation method exemplified below.
- One or more deposition sources may be used to deposit the metal-containing layer, two or more deposition sources may be used, two, three or four deposition sources may be used. You can also The total number of deposition sources used can be, for example, five or less.
- a vapor deposition source containing a first metal and a second metal can be used as the single vapor deposition source.
- two or more deposition sources in one form, one or more deposition sources containing only the first metal among the first metal and the second metal and only the second metal can be used together, and in another form, two or more deposition sources containing the first metal and the second metal can be used together.
- a vapor deposition source containing the first metal and/or the second metal can be produced, for example, by the following method.
- a solution containing silver particles (silver particles) that is the first metal (hereinafter also referred to as “first metal solution”) is prepared.
- a solution can be, for example, an aqueous solution, and can be an aqueous dispersion of silver particles.
- the concentration of silver particles in the solution of the first metal can range, for example, from 1000 to 10000 ppm. In the present invention and herein, ppm is by weight.
- a solution containing one or more second metal particles hereinafter also referred to as "second metal solution" is prepared.
- Such a solution can be, for example, an aqueous solution, and can be an aqueous dispersion of particles of the second metal.
- the second metal solution only one kind of solution containing at least one kind of particles of the second metal can be used, or two kinds of solutions containing at least one kind of particles of the second metal can be used. It is also possible to use the above.
- the concentration of particles of the second metal in the solution of the second metal can range, for example, from 1000 to 10000 ppm.
- the solution of the second metal contains particles of the second metal of two or more kinds
- the above concentration refers to the total concentration of the particles of the two or more kinds of metals.
- the carrier is impregnated with the solution.
- the carrier may be impregnated with the plurality of types of solutions separately or simultaneously, or the carrier may be impregnated with a mixture of a plurality of types of solutions.
- the amount of the first metal solution to be impregnated into the carrier can be, for example, in the range of 0.1 to 5.0 ml.
- the amount of the second metal solution to be impregnated into the carrier can be, for example, in the range of 0.1 to 5.0 ml.
- the liquid volume of the second metal solution is 0.1 to 5 times the liquid volume of the first metal solution.
- the above liquid volume refers to the total liquid volume of the two or more kinds of solutions.
- the carrier may be, for example, a porous body, and may be made of metal, alloy, or ceramic. A specific example of the porous body is a sintered filter.
- the sintered filter can be a sintered body obtained by sintering a powder material such as metal powder, alloy powder, or ceramic powder. After the carrier is impregnated with the above solution, the carrier can be made to carry the particles of the first metal and the particles of the second metal by performing a drying treatment by a known method.
- the particle size of each of the above metal particles can be, for example, 1 nm or more and 10 nm or less, or 1 nm or more and 5 nm or less.
- the vapor deposition method for forming the metal-containing layer can be a heating vapor deposition method.
- the heating vapor deposition method is a method in which a vapor deposition material is heated and vaporized by heating the internal atmosphere of the vapor deposition device with a heating means (heater or the like) arranged in the vapor deposition device.
- a heating means herein, the temperature profile for heating the plurality of vapor deposition sources can be the same in one embodiment, and can be different in another embodiment. .
- the present inventor believes that heating a plurality of vapor deposition sources with different temperature profiles is preferable from the viewpoint of suppressing uneven distribution of various components in the layer to be deposited. Details are as follows.
- the water-repellent component which will be described later, usually has a different vaporization temperature than the metal component.
- the metal component is a component containing one or more metals
- the metal component for forming the metal-containing layer is a component containing a first metal and/or a second metal.
- the water-repellent component that vaporizes at a lower temperature is mainly vaporized and vaporized first, and then the metal component that vaporizes at a higher temperature is mainly vaporized and vaporized. Conceivable.
- the distribution of the metal component and the water-repellent component is uneven in the water-repellent layer, and the water-repellent component is unevenly distributed inside the water-repellent layer. is considered to reduce the water repellency that the spectacle lens can exhibit due to the inclusion of this component.
- the performance exhibited by the metal component unevenly distributed in the surface layer portion is low in durability.
- a plurality of vapor deposition sources are heated with different temperature profiles in film formation by the thermal vapor deposition method, it is thought that the bias in the distribution of the metal component and the water repellent component in the layer to be formed can be reduced. .
- This is preferable in terms of providing a spectacle lens capable of exhibiting water repellency and the performance exhibited by the metal component, for example, exhibiting these performances even after the surface has been worn by friction due to long-term use. The inventor makes a guess.
- this layer can function as a water-repellent layer.
- water-repellent layer means a layer that contributes to the water repellency of the surface of the spectacle lens or exhibits better water repellency than the case without this layer. shall mean the layer that contributes to "Water repellent component” means a component that contributes to the surface of the layer containing this component exhibiting water repellency, or that contributes to exhibiting better water repellency than when this component is not included. shall mean.
- a fluorine-containing component can be mentioned as the water-repellent component.
- the form of fluorine in the fluorine-containing component may be in the form of an inorganic compound or an organic compound, preferably in the form of an organic compound. That is, one form of the water-repellent component is a fluorine-containing organic compound.
- fluorine-containing organic compound is meta-xylene hexafluoride (C 6 H 4 (CF 3 ) 2 ).
- fluorine-containing organic compounds include fluorine-containing organic silane compounds represented by the following general formula (1).
- Rf is a linear or branched perfluoroalkyl group having 1 to 16 carbon atoms, preferably CF 3 —, C 2 F 5 —, or C 3 F 7 —.
- R 3 is an aliphatic hydrocarbon group or an aromatic hydrocarbon group
- R 4 is a hydrogen atom or an aliphatic hydrocarbon group (eg, a lower aliphatic hydrocarbon group)
- R 5 has 3 to 3 carbon atoms
- 6 is a divalent aliphatic hydrocarbon group.
- R2 is a hydrogen atom or a monovalent organic group.
- the monovalent organic group is preferably an inert group. More preferably, the monovalent organic group is a monovalent hydrocarbon group having 1 to 4 carbon atoms.
- X is an iodine atom or a hydrogen atom
- Y is a hydrogen atom or an alkyl group (eg, a lower alkyl group).
- Z is a fluorine atom or a trifluoromethyl group.
- a, b, c, and d are each independently an integer in the range of 0-200, preferably an integer in the range of 1-50.
- e is 0 or 1;
- m and n are each independently an integer ranging from 0 to 2, preferably 0;
- p is an integer of 1 or more, preferably in the range of 1-10.
- the molecular weight (weight average molecular weight Mw) of the fluorine-containing organosilane compound represented by the general formula (1) is not particularly limited, and is, for example, in the range of 5 ⁇ 10 2 to 1 ⁇ 10 5 or 5 ⁇ 10 2 to 1 It can be in the range of ⁇ 10 4 .
- the fluorine-containing organosilane compound represented by the general formula (1) can be a fluorine-containing organosilane compound represented by the following general formula (2).
- R 1 , Y, and m in general formula (2) above have the same meanings as in general formula (1) above.
- q is an integer in the range 1-50 and r is an integer in the range 1-10.
- a vapor deposition method using a vapor deposition source containing a water-repellent component can be employed.
- the vapor deposition method can be, for example, a thermal vapor deposition method.
- a commercially available liquid water-repellent agent is impregnated into the carrier as it is or after being diluted.
- the amount of liquid with which the carrier is impregnated can be, for example, in the range of 0.10 to 5.00 ml.
- the water-repellent component can be carried on the carrier by performing a drying treatment by a known method.
- the metal-containing layer is formed by a heating vapor deposition method
- a plurality of vapor deposition sources are heated with different temperature profiles, and when three or more vapor deposition sources are used, at least two vapor deposition sources are heated.
- the profiles may be different temperature profiles, and two or more deposition sources among three or more deposition sources may be heated with the same temperature profile.
- Heating of a plurality of deposition sources can be performed in one chamber in one form.
- one vacuum deposition device can be used, and a plurality of deposition sources can be arranged in a vacuum chamber within this device to deposit the deposition material on the film formation target surface.
- FIG. 1 is a schematic diagram for explaining an example of a method for forming a metal-containing layer by thermal vapor deposition.
- 2A and 2B are vapor deposition sources
- 3A and 3B are heaters
- 11 is a lens substrate
- 14 is a deposited water-repellent layer.
- the pressure in the chamber during film formation may be determined according to the type of vapor deposition material, and can be, for example, 2 ⁇ 10 ⁇ 2 Pa or less.
- Halogen heaters for example, can be used as the heaters 3A and 3B.
- the temperature profile of the heater 3A that heats the vapor deposition source 2A and the temperature profile of the heater 3B that heats the vapor deposition source 2B are set to different temperature profiles.
- a temperature profile can be set in a controller provided in the vacuum deposition apparatus.
- the plurality of different temperature profiles can differ in one or more heating parameters selected from the group consisting of heating rate, heating start time and heating end time.
- Specific example 1 shown in FIG. 2 is an example in which the temperature profiles of the two heaters have different heating rates.
- the vapor deposition source 2A heated by the heater 3A contains a water-repellent component
- the vapor deposition source 2B heated by the heater 3B contains a metal component
- the water-repellent component easily vaporizes at a lower temperature than the metal component.
- the rate of temperature increase for heating by each heater can be the same from the start to the end of heating, and in another mode, it can be changed by two or more stages from the start to the end of heating. can.
- Specific example 2 shown in FIG. 3 is an example in which the temperature profiles of the two heaters differ in temperature rise rate and heating end time.
- the vapor deposition source 2A heated by the heater 3A contains a water-repellent component
- the vapor deposition source 2B heated by the heater 3B contains a metal component
- the water-repellent component easily vaporizes at a lower temperature than the metal component.
- the period during which the metal component is vaporized and the water repellency The duration of vaporization of the components can be of the same order of magnitude, or the difference between them can be small.
- Specific example 3 shown in FIG. 4 is an example in which the temperature profiles of the two heaters have different heating start times and heating rates.
- the deposition source 2A heated by the heater 3A and the deposition source 2B heated by the heater 3B both contain a metal component and a water-repellent component
- the water-repellent component is removed from the deposition source 2A.
- the vaporization period and the vaporization period of the water-repellent component from the vapor deposition source 2B can be made different, and the vaporization period of the metal component from the vapor deposition source 2A and the vaporization period of the metal component from the vapor deposition source 2B can be made different. , it is possible to reduce uneven distribution of the water-repellent component and the metal component in the formed water-repellent layer.
- the maximum heating temperature in the temperature profile may be determined according to the type of vapor deposition material, and may be, for example, 100°C or higher and 750°C or lower, but is not limited to this range.
- the thickness of the metal-containing layer thus formed can be, for example, 30 nm or less, 25 nm or less, 20 nm or less, or 15 nm or less.
- the film thickness of the metal-containing layer can be, for example, 5 nm or more or 10 nm or more.
- the contact angle with water on the surface of the layer can be, for example, 100° or more and 120° or less.
- the water-repellent layer can be provided, for example, as the outermost layer on one or both sides of the spectacle lens.
- the spectacle lens has the metal-containing layer on the surface of the inorganic layer opposite to the lens substrate.
- the metal layer can be provided directly on the surface of the inorganic layer or indirectly via another layer.
- FIG. 5 is a schematic cross-sectional view showing an example of the layer structure of the spectacle lens.
- the spectacle lens 1 shown in FIG. 5 has a hard coat layer 12 on one surface 11a (for example, the object-side surface) of a lens substrate 11, and a multilayer film 13 thereon.
- the multilayer film 13 is an alternate laminated film of low refractive index layers 13L and high refractive index layers 13H.
- a metal-containing layer 14 is provided on the surface of the multilayer film.
- the metal-containing layer 14 can function as an antibacterial layer, and can function as a water-repellent layer by containing a water-repellent component.
- the lens substrate of the spectacle lens can be a plastic lens substrate or a glass lens substrate.
- the glass lens substrate can be, for example, a lens substrate made of inorganic glass.
- a plastic lens substrate is preferable from the viewpoint of being lightweight, hard to break, and easy to handle.
- Plastic lens substrates include styrene resins such as (meth)acrylic resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resins, polyester resins, and polyether resins.
- a urethane resin obtained by reacting an isocyanate compound with a hydroxy compound such as diethylene glycol a thiourethane resin obtained by reacting an isocyanate compound with a polythiol compound, and a (thio)epoxy compound having one or more disulfide bonds in the molecule.
- a cured product (generally called a transparent resin) obtained by curing the curable composition contained therein can be mentioned.
- the lens substrate an undyed one (colorless lens) may be used, or a dyed one (dyed lens) may be used.
- the refractive index of the lens substrate can be, for example, about 1.60 to 1.75.
- the refractive index of the lens substrate is not limited to the above range, and may be within the above range or vertically separated from the above range.
- the refractive index refers to the refractive index for light with a wavelength of 500 nm.
- the lens substrate may be a lens having refractive power (so-called prescription lens) or a lens without refractive power (so-called non-prescription lens).
- Spectacle lenses can be various lenses such as monofocal lenses, multifocal lenses, and progressive power lenses.
- the type of lens is determined by the surface shape of both surfaces of the lens substrate.
- the surface of the lens substrate may be convex, concave, or flat.
- the object-side surface is convex and the eyeball-side surface is concave.
- the present invention is not limited to this.
- the spectacle lens has an inorganic layer on the lens substrate.
- an "inorganic layer” is a layer containing an inorganic substance, preferably a layer containing an inorganic substance as a main component.
- the main component is the component that accounts for the most in the layer, and is usually about 50% to 100% by mass, further about 90% to 100% by mass, relative to the mass of the layer. .
- the inorganic layer can be a layer directly laminated on the surface of the lens substrate, or a layer indirectly laminated on the surface of the lens substrate via one or more other layers. .
- the other layer examples include one or more known layers such as a cured layer of a curable composition, which is generally called a hard coat layer, and a primer layer provided for improving adhesion.
- a cured layer of a curable composition which is generally called a hard coat layer
- a primer layer provided for improving adhesion.
- the types and thicknesses of these layers are not particularly limited, and can be determined according to the desired functions and optical properties of the spectacle lens.
- the inorganic layer can be a multilayer film of two or more inorganic layers.
- the metal-containing layer is provided on the uppermost inorganic layer (that is, the inorganic layer at the farthest position from the lens substrate) of the multilayer film.
- a multilayer film including one or more layers each of a high refractive index layer and a low refractive index layer can be exemplified.
- Such a multilayer film is an antireflection film having the property of preventing reflection of light of a specific wavelength or light of a specific wavelength range, or a reflective film having the property of reflecting light of a specific wavelength or light of a specific wavelength range.
- Such an inorganic layer is for example the multilayer film 13 shown in FIG.
- “high” and “low” with respect to “high refractive index” and “low refractive index” are relative designations. That is, the high refractive index layer means a layer having a higher refractive index than the low refractive index layer included in the same multilayer film.
- the low refractive index layer refers to a layer having a lower refractive index than the high refractive index layer included in the same multilayer film.
- the refractive index of the high refractive index material constituting the high refractive index layer is, for example, 1.60 or more (for example, the range of 1.60 to 2.40), and the refractive index of the low refractive index material constituting the low refractive index layer can be, for example, 1.59 or less (eg, in the range of 1.37 to 1.59).
- the terms “high” and “low” regarding high refractive index and low refractive index are relative terms, so the refractive indices of high refractive index materials and low refractive index materials are limited to the above ranges. not something.
- high refractive index materials for forming the high refractive index layer include zirconium oxide (eg, ZrO 2 ), tantalum oxide (eg, Ta 2 O 5 ), titanium oxide (eg, TiO 2 ), and aluminum oxide (eg, TiO 2 ).
- zirconium oxide eg, ZrO 2
- tantalum oxide eg, Ta 2 O 5
- titanium oxide eg, TiO 2
- aluminum oxide eg, TiO 2
- Al 2 O 3 yttrium oxide
- hafnium oxide e.g. HfO 2
- niobium oxide e.g. Nb 2 O 5
- the low refractive index material for forming the low refractive index layer is an oxide selected from the group consisting of silicon oxide (eg SiO 2 ), magnesium fluoride (eg MgF 2 ) and barium fluoride (eg BaF 2 ). or a mixture of one or more of the compounds or fluorides.
- oxides and fluorides are indicated by stoichiometric compositions for convenience, but those in which oxygen or fluorine is deficient or excessive from the stoichiometric composition are also high refractive index materials or low refractive index materials. can be used as
- the high refractive index layer is a film whose main component is a high refractive index material
- the low refractive index layer is a film whose main component is a low refractive index material.
- a film eg, vapor deposition film
- Such a film can be formed by forming a film using a film formation material (eg, vapor deposition material) containing the high refractive index material or the low refractive index material as a main component.
- Films and film-forming materials may contain impurities that are unavoidably mixed in.
- other components such as other inorganic substances and film-forming aids, may be included to the extent that the functions of the main components are not impaired. It may also contain known additive ingredients that serve the purpose.
- Film formation can be performed by a known film formation method, and from the viewpoint of ease of film formation, vapor deposition is preferable, and vacuum vapor deposition is more preferable.
- the antireflection film can be, for example, a multi-layer film in which high refractive index layers and low refractive index layers are alternately laminated to form a total of 3 to 10 layers.
- the thickness of the high refractive index layer and the thickness of the low refractive index layer can be determined according to the layer structure. Specifically, the combination of layers included in the multilayer film and the film thickness of each layer depend on the refractive index of the film forming material for forming the high refractive index layer and the low refractive index layer, and the spectacle lens by providing the multilayer film.
- the multilayer film includes a layer containing a conductive oxide as a main component (a conductive oxide layer), preferably a conductive oxide formed by vapor deposition using a vapor deposition material containing a conductive oxide as a main component.
- a conductive oxide layer preferably a conductive oxide formed by vapor deposition using a vapor deposition material containing a conductive oxide as a main component.
- One or more layers of deposited film may be included at any location.
- the thickness of each layer of the high refractive index layer and the low refractive index layer included in the multilayer film can be, for example, 3 to 500 nm, and the total thickness of the multilayer film can be, for example, 100 to 900 nm.
- the film thickness in the present invention and specification is a physical film thickness.
- the metal-containing layer is provided on the surface of the inorganic layer.
- the metal-containing layer can be a layer directly laminated on the surface of the inorganic layer, or a layer indirectly laminated on the surface of the inorganic layer via one or more other layers. can be.
- a laminate containing at least the inorganic layer and the metal-containing layer can be formed on at least one surface of the lens substrate, or can be formed on both surfaces.
- the laminate may be positioned on the object side of the spectacle lens, the laminate may be positioned on the eyeball side of the spectacle lens, and the laminate may be positioned on the object side and the eyeball side of the spectacle lens.
- the object-side laminate and the eye-side laminate can be the same laminate or different laminates.
- the term "eyeball side” refers to the surface side positioned on the eyeball side when spectacles having spectacle lenses are worn by the wearer.
- the “object side” is the opposite surface side, that is, the surface side located on the object side when spectacles with spectacle lenses are worn by the wearer.
- the metal-containing layer can function as an antibacterial layer, thereby exhibiting antibacterial properties. Further, when the metal-containing layer is a layer that can also function as a water-repellent layer, the spectacle lens can also exhibit water repellency, thereby preventing, for example, water discoloration of the lens.
- the inorganic layer functions, for example, as an antireflection film, thereby providing the spectacle lens with antireflection performance with respect to light of a specific wavelength or light of a specific wavelength range.
- One aspect of the present invention relates to spectacles including the above spectacle lens.
- the details of the spectacle lenses included in these spectacles are as described above.
- a known technique can be applied to the configuration of the frame and the like.
- the SiO 2 layer is a vapor deposition film formed using silicon oxide as a vapor deposition material
- the ZrO 2 layer is a vapor deposition film formed using zirconium oxide as a vapor deposition material.
- Each vapor deposition material is a vapor deposition material consisting only of the described oxides, except for unavoidably mixed impurities.
- Example 1 ⁇ Preparation of lens substrate with hard coat layer> A hard coating solution containing inorganic oxide particles and a silicon compound was applied by spin coating to the entire object-side surface (convex surface) of a plastic lens substrate manufactured using a monomer for spectacle lenses (MR8 manufactured by Mitsui Chemicals, Inc.), followed by heating in a furnace. By heat-curing for 60 minutes in a heating furnace with an internal temperature of 100° C., a single-layer hard coat layer having a thickness of 3 ⁇ m was formed.
- MR8 monomer for spectacle lenses
- a disk-shaped sintered filter (material: SUS) with a diameter of 18 mm was used as a carrier for the deposition source, and two deposition sources were produced by the following method.
- the carrier into which the water-repellent component solution of the amount shown in Table 1 was poured was subjected to a drying treatment for 1 hour in a drying oven having an internal temperature of 50°C.
- the carrier was subjected to a drying treatment for 1 hour in a drying oven having an internal temperature of 50° C. after injecting a metal component solution containing the first metal in the amount shown in Table 1.
- the carrier after the drying treatment was subjected to a drying treatment for 1 hour in a drying furnace having an internal temperature of 50° C.
- the spectacle lens on which the multilayer antireflection film was formed and the vapor deposition source were placed in a vacuum chamber of a vacuum vapor deposition apparatus.
- the two vapor deposition sources produced above were arranged as vapor deposition sources 2A and 2B.
- Each deposition source was mounted on a molybdenum boat (not shown in FIG. 1) and placed in a vacuum chamber.
- the pressure in the vacuum chamber was set to 2 ⁇ 10 ⁇ 2 Pa or less, and heating was performed by the heaters 3A and 3B (both halogen heaters) according to the temperature profile of Example 3 in FIG. Specifically, in the temperature profile of the heater 3A, the temperature was raised to 600° C.
- the heating start time was delayed by 1 minute and 30 seconds from the heating start time of heater 3A, and after the temperature was raised to 600°C over 2 minutes, the temperature was raised from 600°C to 650°C over 4 minutes. .
- the water-repellent component, the first metal component and the second metal component can be heated and vaporized, and the water-repellent component, the first metal component and the second metal component can be deposited on the surface of the multilayer antireflection film.
- a vapor deposition film can be formed on which the second metal component is deposited.
- a water-repellent layer with a thickness of 10 to 20 nm containing the water-repellent component and the two metal components was formed on the surface of the multilayer antireflection film.
- Example 1 having a layer structure of "lens substrate/hard coat layer/multilayer antireflection film (inorganic layer)/water-repellent layer (metal-containing layer)" was produced.
- Example 1 A spectacle lens of Example 2 was made by the method described for Example 1, except that no solution of the second metal component was used in making the vapor deposition source.
- Table 1 shows the amounts of various liquids injected into the carrier during the preparation of the vapor deposition source for Example 1 and Comparative Example 1.
- the test piece cut from each spectacle lens is subjected to Category 1 described in the water resistance test chapter of the Sustainability Test Method (2018 edition) of the SIAA (Antibacterial Product Technology Council). After conducting the water resistance test, the antibacterial properties were evaluated by the following method.
- test piece (test piece cut out from each spectacle lens of Examples and Comparative Examples and its reference sample) in a sterilized petri dish
- 1.0 ⁇ 10 5 to 4.0 ⁇ 10 0.4 mL of a bacterial solution containing 5 test bacteria (Staphylococcus aureus or Escherichia coli) is dropped on the center of the test piece, and the test piece is covered with a polyethylene film cut to 40 mm x 40 mm.
- this petri dish After culturing this petri dish at a relative humidity of 90% or more for 24 hours, the number of viable bacteria per 1 cm 2 is measured, and the following antibacterial activity value is calculated.
- Antibacterial activity value Ut-At ⁇ 2.0
- Ut Average value of the logarithmic value of the number of viable bacteria per 1 cm 2 after 24-hour culture of an unprocessed test piece (reference sample)
- SIAA Antimicrobial Product Technology Council
- a product has an antimicrobial effect when the antimicrobial activity value is 2 or more. Therefore, the antibacterial properties of the spectacle lenses of Example 1 and Comparative Example 1 after the light resistance test or after the water resistance test were judged based on the antibacterial activity values obtained above according to the following judgment criteria.
- OK Antibacterial activity value is 2.0 or more
- NG Antibacterial activity value is less than 2.0
- the spectacle lens of Example 1 which has the metal-containing layer containing the second metal together with the first metal, is compared with the spectacle lens of Comparative Example 1, which does not contain the second metal in the metal-containing layer. It can be confirmed that it is excellent in antibacterial light resistance and water resistance.
- the contact angle of the spectacle lens without (initial) frictional abrasion treatment and after the frictional abrasion treatment was measured by the following method.
- the initial contact angle was 108 degrees
- the contact angle after friction abrasion treatment was 106 degrees. From these results, it can be confirmed that the spectacle lens of Example 1 has a large contact angle and excellent water repellency both at the initial stage and after the friction abrasion treatment.
- Frictional wear treatment was performed by the following method. An eraser cut to a size of 19 mm x 24 mm was wrapped with lens wiping paper (Dasper, manufactured by Ozu Sangyo). The surface of the water-repellent layer of the spectacle lens was rubbed 5,000 times back and forth with a frictional wear member with a load of 2 kg.
- it has a lens substrate and an inorganic layer, further has a metal-containing layer on the surface side of the inorganic layer opposite to the lens substrate, and the metal contained in the metal-containing layer is the a metal and a second metal, wherein the first metal is silver and the second metal is selected from the group consisting of cobalt, nickel, zinc, copper, zirconium, molybdenum, lead, platinum, gold and palladium;
- a spectacle lens is provided that is one or more metals that
- the spectacle lens can be a spectacle lens with excellent antibacterial light resistance and water resistance.
- the second metal can be one or more metals selected from the group consisting of zirconium, platinum, gold and palladium.
- the second metal may contain platinum.
- the inorganic layer can be a multilayer film of two or more inorganic layers.
- the metal-containing layer can be a water-repellent layer.
- the water-repellent layer can contain a fluorine-based organic compound.
- the method for manufacturing the spectacle lens includes forming the metal-containing layer by a heat vapor deposition method, wherein the film formation by the heat vapor deposition method uses a plurality of vapor deposition sources with different temperature profiles.
- a method of manufacturing an ophthalmic lens is provided that includes heating with.
- the different temperature profiles may differ in one or more heating parameters selected from the group consisting of heating rate, heating start time, and heating end time.
- spectacles provided with the above spectacle lenses are provided.
- One aspect of the present invention is useful in the field of manufacturing spectacle lenses and spectacles.
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Abstract
Description
レンズ基材と無機層とを有し、
上記無機層のレンズ基材とは反対の表面側に金属含有層を更に有し、
上記金属含有層に含まれる金属は、第1の金属及び第2の金属を含み、
第1の金属は銀であり、
第2の金属は、コバルト、ニッケル、亜鉛、銅、ジルコニウム、モリブデン、鉛、白金、金及びパラジウムからなる群から選ばれる1種以上の金属である眼鏡レンズ、
に関する。
以下、上記眼鏡レンズ及びその製造方法について、更に詳細に説明する。
上記眼鏡レンズの金属含有層は、第1の金属として銀(Ag)を含み、第2の金属として銀以外の金属の1種以上を含む。第2の金属は、コバルト(Co)、ニッケル(Ni)、亜鉛(Zn)、銅(Cu)、ジルコニウム(Zr)、モリブデン(Mo)、鉛(Pb)、白金(Pt)、金(Au)及びパラジウム(Pd)からなる群から選ばれる1種以上の金属であり、ジルコニウム、白金、金及びパラジウムからなる群から選ばれる1種以上の金属であることが好ましい。中でも、白金は、銀の酸化の進行を制御することに寄与し得ることに加えて抗菌性を発揮できる金属であるため好ましい。
以下、蒸着法を例に取り、上記金属含有層の成膜方法について説明する。ただし、上記金属含有層は、以下に例示する成膜方法に限定されるものではない。
第1の金属である銀の粒子(銀粒子)を含む溶液(以下、「第1の金属の溶液」とも呼ぶ。)を準備する。かかる溶液は、例えば水溶液であることができ、銀粒子の水分散液であることができる。第1の金属の溶液における銀粒子の濃度は、例えば1000~10000ppmの範囲であることができる。本発明及び本明細書において、ppmは、質量基準である。
上記溶液とは別に、第2の金属の粒子の1種以上を含む溶液(以下、「第2の金属の溶液」とも呼ぶ。)を準備する。かかる溶液は、例えば水溶液であることができ、第2の金属の粒子の水分散液であることができる。また、第2の金属の溶液として、第2の金属の粒子を1種以上含む溶液を1種のみ使用することもでき、又は、第2の金属の粒子の1種以上を含む溶液を2種以上使用することもできる。いずれの場合においても、第2の金属の溶液における第2の金属の粒子の濃度は、例えば1000~10000ppmの範囲であることができる。ここで、第2の金属の溶液が第2の金属の粒子を2種以上含む場合、上記の濃度は、それら2種以上の金属の粒子の合計についての濃度をいうものとする。
上記の各溶液としては、例えば、金属粒子の水分散液として市販されている市販品をそのまま使用することができ、又は市販品を希釈して使用することもできる。
こうして上記溶液を準備した後、上記溶液を担体に含浸させる。上記の複数種の溶液は、上記担体に別々に含浸させてもよく、同時に含浸させてもよく、又は複数種の溶液を混合した混合液を上記担体に含浸させてもよい。担体に含浸させる第1の金属の溶液の液量は、例えば、0.1~5.0mlの範囲とすることができる。担体に含浸させる第2の金属の溶液の液量は、例えば、0.1~5.0mlの範囲とすることができる。また、同じ担体に第1の金属と第2の金属とを担持させる場合、第1の金属の溶液の液量に対して、第2の金属の溶液の液量は、0.1~5倍の範囲とすることができる。ここで、第2の金属の溶液として2種以上の溶液を使用する場合、上記の液量は、それら2種以上の溶液の合計についての液量をいうものとする。
溶液を担体に含浸させる方法としては、例えば、溶液を担体に注入又は噴霧する方法、担体を溶液に浸漬させる方法等を挙げることができる。
また、上記担体は、例えば多孔質体であることができ、例えば、金属、合金、セラミック製であることができる。多孔質体の具体例としては焼結フィルタを挙げることができる。焼結フィルタは、金属粉末、合金粉末、セラミック粉末等の粉末材料を焼結させた焼結体であることができる。
上記溶液を担体に含浸させた後に公知の方法で乾燥処理を行うことによって、第1の金属の粒子及び第2の金属の粒子を担体に担持させることができる。
例えば、後述する撥水性成分は、金属成分とは気化する温度が異なることが通常である。金属成分とは、1種以上の金属を含む成分であり、上記金属含有層の成膜のための金属成分は、第1の金属及び/又は第2の金属を含有する成分である、単一の温度プロファイルの加熱による蒸着では、昇温中、より低温で気化する撥水性成分が主に先に気化して蒸着され、その後により高温で気化する金属成分が主に気化して蒸着されると考えられる。このように金属成分と撥水性成分が蒸着されて金属含有層が形成されると、撥水層内で金属成分と撥水性成分の分布に偏りが生じ、撥水層内部に偏在する撥水性成分については、この成分が含まれることによって眼鏡レンズが示すことができる撥水性は低下すると考えられる。一方、表層部に偏在する金属成分によって発揮される性能については、耐久性が低くなると推察される。
これに対し、加熱蒸着法による成膜において複数の蒸着源を異なる温度プロファイルで加熱すると、成膜される層内での金属成分と撥水性成分の分布の偏りを少なくすることができると考えられる。このことは、撥水性及び金属成分によって発揮される性能を示すことができ、例えば長期使用によって表面が摩擦を受けて磨耗した後にもそれら性能を示すことができる眼鏡レンズを提供するうえで好ましいと本発明者は推察している。
上記眼鏡レンズは、上記金属含有層を、無機層のレンズ基材とは反対の表面側に有する。上記金属層を、無機層の表面上に直接又は他の層を介して間接的に設けることができる。
眼鏡レンズのレンズ基材は、プラスチックレンズ基材又はガラスレンズ基材であることができる。ガラスレンズ基材は、例えば無機ガラス製のレンズ基材であることができる。レンズ基材としては、軽量で割れ難く取扱いが容易であるという観点から、プラスチックレンズ基材が好ましい。プラスチックレンズ基材としては、(メタ)アクリル樹脂をはじめとするスチレン樹脂、ポリカーボネート樹脂、アリル樹脂、ジエチレングリコールビスアリルカーボネート樹脂(CR-39)等のアリルカーボネート樹脂、ビニル樹脂、ポリエステル樹脂、ポリエーテル樹脂、イソシアネート化合物とジエチレングリコールなどのヒドロキシ化合物との反応で得られたウレタン樹脂、イソシアネート化合物とポリチオール化合物とを反応させたチオウレタン樹脂、分子内に1つ以上のジスルフィド結合を有する(チオ)エポキシ化合物を含有する硬化性組成物を硬化した硬化物(一般に透明樹脂と呼ばれる。)を挙げることができる。レンズ基材としては、染色されていないもの(無色レンズ)を用いてもよく、染色されているもの(染色レンズ)を用いてもよい。レンズ基材の屈折率は、例えば、1.60~1.75程度であることができる。ただしレンズ基材の屈折率は、上記範囲に限定されるものではなく、上記の範囲内でも、上記の範囲から上下に離れていてもよい。本発明及び本明細書において、屈折率とは、波長500nmの光に対する屈折率をいうものとする。また、レンズ基材は、屈折力を有するレンズ(いわゆる度付レンズ)であってもよく、屈折力なしのレンズ(いわゆる度なしレンズ)であってもよい。
上記眼鏡レンズは、レンズ基材上に無機層を有する。本発明及び本明細書において、「無機層」とは、無機物質を含む層であり、好ましくは無機物質を主成分として含む層である。ここで主成分とは、層において最も多くを占める成分であって、通常は層の質量に対して50質量%程度~100質量%、更には90質量%程度~100質量%を占める成分である。後述の主成分についても同様である。無機層は、レンズ基材表面上に直接積層された層であることができ、又はレンズ基材表面上に1層以上の他の層を介して間接的に積層された層であることができる。上記の他の層としては、一般にハードコート層と呼ばれる硬化性組成物の硬化層、密着性向上のために設けられるプライマー層等の公知の層の1層以上を挙げることができる。これらの層の種類及び膜厚は、特に限定されず、眼鏡レンズに望まれる機能及び光学特性に応じて決定することができる。
本発明の一態様は、上記眼鏡レンズを備えた眼鏡に関する。この眼鏡に含まれる眼鏡レンズの詳細については、先に記載した通りである。上記眼鏡について、フレーム等の構成については、公知技術を適用することができる。
<ハードコート層付きレンズ基材の作製>
眼鏡レンズ用モノマー(三井化学社製MR8)により製造したプラスチックレンズ基材の物体側表面(凸面)の全面に、無機酸化物粒子とケイ素化合物とを含むハードコート液をスピンコーティングによって塗布し、炉内温度100℃の加熱炉において60分間加熱硬化させることにより、膜厚3μmの単層のハードコート層を形成した。
次に、上記ハードコート層を形成したレンズ基材を真空蒸着装置に入れ、上記ハードコート層表面の全面に、真空蒸着法により、「SiO2層/ZrO2層/SiO2層/ZrO2層/SiO2層/ZrO2層/SiO2層」の合計7層(総厚:約400~600nm)が積層された多層反射防止膜を形成した。「/」の表記は、「/」の左に記載の部分と右に記載の部分が直接積層されていることを示す。この点は、以下の記載においても同様である。
こうして、「レンズ基材/ハードコート層/多層反射防止膜(無機層)」の層構成を有する眼鏡レンズを作製した。
(蒸着源の作製)
撥水性成分の溶液として、信越シリコーン社製撥水剤(商品名:KY-130、フッ素含有有機シラン化合物含有)を使用した。
第1の金属成分の溶液として、粒径2~5nmの銀粒子を5000ppmの濃度で含む水分散液を準備した。
第2の金属成分の溶液として、粒径2~5nmの白金粒子を5000ppmの濃度で含む水分散液を準備した。
蒸着源の担体として、直径18mmの円盤状の焼結フィルタ(材質:SUS)を使用し、2つの蒸着源を以下の方法によって作製した。
表1に示す量の撥水性成分の溶液を注入した担体に内部温度50℃の乾燥炉内で1時間乾燥処理を施した。
上記乾燥処理後の担体を、表1に示す量の第1の金属を含む金属成分の溶液を注入した後に内部温度50℃の乾燥炉内で1時間乾燥処理を施した。
上記乾燥処理後の担体を、表1に示す量の第2の金属を含む金属成分の溶液を注入した後に内部温度50℃の乾燥炉内で1時間乾燥処理を施した。
こうして、撥水性成分、第1の金属(Ag)成分及び第2の金属(Pt)成分が担体に担持された蒸着源を2つ作製した。
図1に示すように、真空蒸着装置の真空チャンバー内に、上記多層反射防止膜が形成された眼鏡レンズ及び上記蒸着源を配置した。上記で作製した2つの蒸着源を蒸着源2A及び2Bとして配置した。各蒸着源は、モリブデンボート(図1に図示せず)の上に載せて真空チャンバー内に配置した。真空チャンバー内の圧力は2×10-2Pa以下とし、図4の具体例3の温度プロファイルでヒーター3A及びヒーター3B(いずれもハロゲンヒーター)の加熱を実施した。詳しくは、ヒーター3Aの温度プロファイルでは、600℃まで1分30秒かけて昇温した後、600℃から650℃まで4分30秒かけて昇温した。ヒーター3Bの温度プロファイルでは、加熱開始時間をヒーター3Aの加熱開始時間より1分30秒遅くし、600℃まで2分かけて昇温した後、600℃から650℃まで4分かけて昇温した。こうして加熱することにより、撥水性成分、第1の金属成分及び第2の金属成分を加熱して気化させることができ、上記多層反射防止膜の表面上に撥水性成分、第1の金属成分及び第2の金属成分が堆積した蒸着膜を形成することができる。
以上により、上記多層反射防止膜の表面上に、撥水性成分及び上記2種の金属成分を含む膜厚10~20nmの撥水層を成膜した。
蒸着源の作製時、第2の金属成分の溶液を使用しなかった点以外、実施例1について記載した方法によって実施例2の眼鏡レンズを作製した。
JIS Z 2801:2012にしたがって抗菌性試験を実施した。実施例1及び比較例1の各眼鏡レンズの抗菌性試験では、上記金属含有層が形成されていない点以外が各実施例又は比較例の眼鏡レンズと同じ方法で作製された眼鏡レンズを参照用サンプルとした。
抗菌性の耐光性については、各眼鏡レンズから切り出した試験片に対して、SIAA(抗菌製品技術協議会)の持続性試験法(2018年度版)の耐光性試験の章に記載の区分1の耐光性試験を実施した後、以下の方法によって抗菌性を評価した。
抗菌性の耐水性については、各眼鏡レンズから切り出した試験片に対して、SIAA(抗菌製品技術協議会)の持続性試験法(2018年度版)の耐水性試験の章に記載の区分1の耐水性試験を実施した後、以下の方法によって抗菌性を評価した。
50mm×50mmの試験片(実施例及び比較例の各眼鏡レンズとその参照用サンプルからそれぞれ切り出した試験片)を滅菌済みシャーレに入れた後、1.0×105個~4.0×105個の試験菌(黄色ブドウ球菌又は大腸菌)を含む菌液0.4mLを試験片の中央部に滴下し、40mm×40mmに切断したポリエチレンフィルムで被覆する。このシャーレを相対湿度90%以上で24時間培養した後の1cm2あたりの生菌数を測定し、以下の抗菌活性値を算出する。
抗菌活性値=Ut-At≧2.0
Ut:無加工試験片(参照用サンプル)の24時間培養後の1cm2あたりの生菌数の対数値の平均値
At:抗菌加工試験片(実施例又は比較例サンプル)の24時間培養後の1cm2あたりの生菌数の対数値の平均値
SIAA(抗菌製品技術協議会)は、抗菌活性値が2以上である場合、その製品に抗菌効果があると規定している。そこで、実施例1及び比較例1の各眼鏡レンズについて、上記で求められた抗菌活性値の値から、以下の判定基準により耐光性試験後又は耐水性試験後の抗菌性について判定した。
OK:抗菌活性値が2.0以上
NG:抗菌活性値が2.0未満
実施例1の眼鏡レンズについて、摩擦磨耗処理なし(初期)と摩擦磨耗処理後の眼鏡レンズの接触角の測定を以下の方法によって実施した。初期の接触角は108度、摩擦磨耗処理後の接触角は106度であった。この結果から、実施例1の眼鏡レンズが初期及び摩擦磨耗処理後のいずれにおいても接触角の値が大きく撥水性に優れることが確認できる。
摩擦磨耗処理は、以下の方法によって実施した。19mm×24mmのサイズにカットした消しゴムにレンズ拭き紙(小津産業者製ダスパー)を巻き付けたもの摩擦磨耗用部材として、往復摩擦磨耗試験機(ヤマト科学社製トライボギヤ30S)に取り付けた。2kgの荷重をかけた摩擦磨耗用部材によって、眼鏡レンズの撥水層表面を往復5000回擦った。
接触角計として協和界面科学社製CA-D型を使用し、雰囲気温度25℃の測定環境において直径2mmの水滴を針先に作り、これを眼鏡レンズの金属含有層の凸面の最上部に触れさせて、液滴を作った。この時に生ずる液滴と面との角度を測定し静止接触角とした。接触角の測定は、水の蒸発による測定誤差を最小限にするために水滴を眼鏡レンズに触れさせた後10秒以内に行った。静止接触角θは水滴の半径(水滴が眼鏡レンズ表面に接触している部分の半径)をrとし、水滴の高さをhとして、以下の式で求められる。
θ=2×tan‐1(h/r)
Claims (9)
- レンズ基材と無機層とを有し、
前記無機層のレンズ基材とは反対の表面側に金属含有層を更に有し、
前記金属含有層に含まれる金属は、第1の金属及び第2の金属を含み、
第1の金属は銀であり、
第2の金属は、コバルト、ニッケル、亜鉛、銅、ジルコニウム、モリブデン、鉛、白金、金及びパラジウムからなる群から選ばれる1種以上の金属である、眼鏡レンズ。 - 前記第2の金属は、ジルコニウム、白金、金及びパラジウムからなる群から選ばれる1種以上の金属である、請求項1に記載の眼鏡レンズ。
- 前記第2の金属は、白金を含む、請求項1又は2に記載の眼鏡レンズ。
- 前記無機層は、2層以上の無機層の多層膜である、請求項1~3のいずれか1項に記載の眼鏡レンズ。
- 前記金属含有層は撥水層である、請求項1~4のいずれか1項に記載の眼鏡レンズ。
- 前記撥水層は、フッ素系有機化合物を含む、請求項5に記載の眼鏡レンズ。
- 請求項1~6のいずれか1項に記載の眼鏡レンズの製造方法であって、
前記金属含有層を加熱蒸着法によって成膜することを含み、
前記加熱蒸着法による成膜は、複数の蒸着源をそれぞれ異なる温度プロファイルで加熱することを含む、前記眼鏡レンズの製造方法。 - 前記異なる温度プロファイルでは、昇温速度、加熱開始時間及び加熱終了時間からなる群から選ばれる1つ以上の加熱パラメータが異なる、請求項7に記載の眼鏡レンズの製造方法。
- 請求項1~6のいずれか1項に記載の眼鏡レンズを備えた眼鏡。
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| JP7686605B2 (ja) | 2022-09-28 | 2025-06-02 | キヤノン株式会社 | 光電変換装置、制御方法、及びコンピュータプログラム |
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